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authorandrew@webrtc.org <andrew@webrtc.org@4adac7df-926f-26a2-2b94-8c16560cd09d>2012-10-22 18:19:23 +0000
committerandrew@webrtc.org <andrew@webrtc.org@4adac7df-926f-26a2-2b94-8c16560cd09d>2012-10-22 18:19:23 +0000
commitb015cbede88899f67a53fbbe581b02ce8e327949 (patch)
tree530a64a3cfdbbabacab974c183326517d49e761e /modules/video_processing/main
downloadwebrtc-b015cbede88899f67a53fbbe581b02ce8e327949.tar.gz
Move src/ -> webrtc/
TBR=niklas.enbom@webrtc.org Review URL: https://webrtc-codereview.appspot.com/915006 git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@2963 4adac7df-926f-26a2-2b94-8c16560cd09d
Diffstat (limited to 'modules/video_processing/main')
-rw-r--r--modules/video_processing/main/OWNERS4
-rw-r--r--modules/video_processing/main/interface/video_processing.h303
-rw-r--r--modules/video_processing/main/interface/video_processing_defines.h43
-rw-r--r--modules/video_processing/main/source/Android.mk59
-rw-r--r--modules/video_processing/main/source/brighten.cc52
-rw-r--r--modules/video_processing/main/source/brighten.h25
-rw-r--r--modules/video_processing/main/source/brightness_detection.cc203
-rw-r--r--modules/video_processing/main/source/brightness_detection.h44
-rw-r--r--modules/video_processing/main/source/color_enhancement.cc67
-rw-r--r--modules/video_processing/main/source/color_enhancement.h29
-rw-r--r--modules/video_processing/main/source/color_enhancement_private.h273
-rw-r--r--modules/video_processing/main/source/content_analysis.cc337
-rw-r--r--modules/video_processing/main/source/content_analysis.h90
-rw-r--r--modules/video_processing/main/source/content_analysis_sse2.cc300
-rw-r--r--modules/video_processing/main/source/deflickering.cc450
-rw-r--r--modules/video_processing/main/source/deflickering.h66
-rw-r--r--modules/video_processing/main/source/denoising.cc186
-rw-r--r--modules/video_processing/main/source/denoising.h46
-rw-r--r--modules/video_processing/main/source/frame_preprocessor.cc192
-rw-r--r--modules/video_processing/main/source/frame_preprocessor.h88
-rw-r--r--modules/video_processing/main/source/spatial_resampler.cc120
-rw-r--r--modules/video_processing/main/source/spatial_resampler.h69
-rw-r--r--modules/video_processing/main/source/video_decimator.cc235
-rw-r--r--modules/video_processing/main/source/video_decimator.h65
-rw-r--r--modules/video_processing/main/source/video_processing.gypi88
-rw-r--r--modules/video_processing/main/source/video_processing_impl.cc298
-rw-r--r--modules/video_processing/main/source/video_processing_impl.h91
-rw-r--r--modules/video_processing/main/test/unit_test/brightness_detection_test.cc112
-rw-r--r--modules/video_processing/main/test/unit_test/color_enhancement_test.cc119
-rw-r--r--modules/video_processing/main/test/unit_test/content_metrics_test.cc40
-rw-r--r--modules/video_processing/main/test/unit_test/createTable.m179
-rw-r--r--modules/video_processing/main/test/unit_test/deflickering_test.cc94
-rw-r--r--modules/video_processing/main/test/unit_test/denoising_test.cc133
-rw-r--r--modules/video_processing/main/test/unit_test/readYUV420file.m45
-rw-r--r--modules/video_processing/main/test/unit_test/unit_test.cc372
-rw-r--r--modules/video_processing/main/test/unit_test/unit_test.h47
-rw-r--r--modules/video_processing/main/test/unit_test/writeYUV420file.m22
-rw-r--r--modules/video_processing/main/test/vpm_tests.gypi39
38 files changed, 5025 insertions, 0 deletions
diff --git a/modules/video_processing/main/OWNERS b/modules/video_processing/main/OWNERS
new file mode 100644
index 00000000..7183cf21
--- /dev/null
+++ b/modules/video_processing/main/OWNERS
@@ -0,0 +1,4 @@
+stefan@webrtc.org
+mikhal@webrtc.org
+marpan@webrtc.org
+henrik.lundin@webrtc.org
diff --git a/modules/video_processing/main/interface/video_processing.h b/modules/video_processing/main/interface/video_processing.h
new file mode 100644
index 00000000..8008b035
--- /dev/null
+++ b/modules/video_processing/main/interface/video_processing.h
@@ -0,0 +1,303 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+/*
+ * video_processing.h
+ * This header file contains the API required for the video
+ * processing module class.
+ */
+
+
+#ifndef WEBRTC_MODULES_INTERFACE_VIDEO_PROCESSING_H
+#define WEBRTC_MODULES_INTERFACE_VIDEO_PROCESSING_H
+
+#include "module.h"
+#include "module_common_types.h"
+#include "video_processing_defines.h"
+
+/**
+ The module is largely intended to process video streams, except functionality
+ provided by static functions which operate independent of previous frames. It
+ is recommended, but not required that a unique instance be used for each
+ concurrently processed stream. Similarly, it is recommended to call Reset()
+ before switching to a new stream, but this is not absolutely required.
+
+ The module provides basic thread safety by permitting only a single function
+ to execute concurrently.
+*/
+
+namespace webrtc {
+
+class VideoProcessingModule : public Module
+{
+public:
+ /**
+ Structure to hold frame statistics. Populate it with GetFrameStats().
+ */
+ struct FrameStats
+ {
+ FrameStats() :
+ mean(0),
+ sum(0),
+ numPixels(0),
+ subSamplWidth(0),
+ subSamplHeight(0)
+ {
+ memset(hist, 0, sizeof(hist));
+ }
+
+ WebRtc_UWord32 hist[256]; /**< Histogram of frame */
+ WebRtc_UWord32 mean; /**< Mean value of frame */
+ WebRtc_UWord32 sum; /**< Sum of frame */
+ WebRtc_UWord32 numPixels; /**< Number of pixels */
+ WebRtc_UWord8 subSamplWidth; /**< Subsampling rate of width in powers
+ of 2 */
+ WebRtc_UWord8 subSamplHeight; /**< Subsampling rate of height in powers
+ of 2 */
+ };
+
+ /**
+ Specifies the warning types returned by BrightnessDetection().
+ */
+ enum BrightnessWarning
+ {
+ kNoWarning, /**< Frame has acceptable brightness */
+ kDarkWarning, /**< Frame is too dark */
+ kBrightWarning /**< Frame is too bright */
+ };
+
+ /*
+ Creates a VPM object.
+
+ \param[in] id
+ Unique identifier of this object.
+
+ \return Pointer to a VPM object.
+ */
+ static VideoProcessingModule* Create(WebRtc_Word32 id);
+
+ /**
+ Destroys a VPM object.
+
+ \param[in] module
+ Pointer to the VPM object to destroy.
+ */
+ static void Destroy(VideoProcessingModule* module);
+
+ /**
+ Not supported.
+ */
+ virtual WebRtc_Word32 TimeUntilNextProcess() { return -1; }
+
+ /**
+ Not supported.
+ */
+ virtual WebRtc_Word32 Process() { return -1; }
+
+ /**
+ Resets all processing components to their initial states. This should be
+ called whenever a new video stream is started.
+ */
+ virtual void Reset() = 0;
+
+ /**
+ Retrieves statistics for the input frame. This function must be used to
+ prepare a FrameStats struct for use in certain VPM functions.
+
+ \param[out] stats
+ The frame statistics will be stored here on return.
+
+ \param[in] frame
+ Reference to the video frame.
+
+ \return 0 on success, -1 on failure.
+ */
+ static WebRtc_Word32 GetFrameStats(FrameStats* stats,
+ const VideoFrame& frame);
+
+ /**
+ Checks the validity of a FrameStats struct. Currently, valid implies only
+ that is had changed from its initialized state.
+
+ \param[in] stats
+ Frame statistics.
+
+ \return True on valid stats, false on invalid stats.
+ */
+ static bool ValidFrameStats(const FrameStats& stats);
+
+ /**
+ Returns a FrameStats struct to its intialized state.
+
+ \param[in,out] stats
+ Frame statistics.
+ */
+ static void ClearFrameStats(FrameStats* stats);
+
+ /**
+ Enhances the color of an image through a constant mapping. Only the
+ chrominance is altered. Has a fixed-point implementation.
+
+ \param[in,out] frame
+ Pointer to the video frame.
+ */
+ static WebRtc_Word32 ColorEnhancement(VideoFrame* frame);
+
+ /**
+ Increases/decreases the luminance value.
+
+ \param[in,out] frame
+ Pointer to the video frame.
+
+ \param[in] delta
+ The amount to change the chrominance value of every single pixel.
+ Can be < 0 also.
+
+ \return 0 on success, -1 on failure.
+ */
+ static WebRtc_Word32 Brighten(VideoFrame* frame, int delta);
+
+ /**
+ Detects and removes camera flicker from a video stream. Every frame from
+ the stream must be passed in. A frame will only be altered if flicker has
+ been detected. Has a fixed-point implementation.
+
+ \param[in,out] frame
+ Pointer to the video frame.
+
+ \param[in,out] stats
+ Frame statistics provided by GetFrameStats(). On return the stats will
+ be reset to zero if the frame was altered. Call GetFrameStats() again
+ if the statistics for the altered frame are required.
+
+ \return 0 on success, -1 on failure.
+ */
+ virtual WebRtc_Word32 Deflickering(VideoFrame* frame,
+ FrameStats* stats) = 0;
+
+ /**
+ Denoises a video frame. Every frame from the stream should be passed in.
+ Has a fixed-point implementation.
+
+ \param[in,out] frame
+ Pointer to the video frame.
+
+ \return The number of modified pixels on success, -1 on failure.
+ */
+ virtual WebRtc_Word32 Denoising(VideoFrame* frame) = 0;
+
+ /**
+ Detects if a video frame is excessively bright or dark. Returns a
+ warning if this is the case. Multiple frames should be passed in before
+ expecting a warning. Has a floating-point implementation.
+
+ \param[in] frame
+ Pointer to the video frame.
+
+ \param[in] stats
+ Frame statistics provided by GetFrameStats().
+
+ \return A member of BrightnessWarning on success, -1 on error
+ */
+ virtual WebRtc_Word32 BrightnessDetection(const VideoFrame& frame,
+ const FrameStats& stats) = 0;
+
+ /**
+ The following functions refer to the pre-processor unit within VPM. The
+ pre-processor perfoms spatial/temporal decimation and content analysis on
+ the frames prior to encoding.
+ */
+
+ /**
+ Enable/disable temporal decimation
+
+ \param[in] enable when true, temporal decimation is enabled
+ */
+ virtual void EnableTemporalDecimation(bool enable) = 0;
+
+ /**
+ Set target resolution
+
+ \param[in] width
+ Target width
+
+ \param[in] height
+ Target height
+
+ \param[in] frameRate
+ Target frameRate
+
+ \return VPM_OK on success, a negative value on error (see error codes)
+
+ */
+ virtual WebRtc_Word32 SetTargetResolution(WebRtc_UWord32 width,
+ WebRtc_UWord32 height,
+ WebRtc_UWord32 frameRate) = 0;
+
+ /**
+ Set max frame rate
+ \param[in] maxFrameRate: maximum frame rate (limited to native frame rate)
+
+ \return VPM_OK on success, a negative value on error (see error codes)
+ */
+ virtual WebRtc_Word32 SetMaxFrameRate(WebRtc_UWord32 maxFrameRate) = 0;
+
+ /**
+ Get decimated(target) frame rate
+ */
+ virtual WebRtc_UWord32 DecimatedFrameRate() = 0;
+
+ /**
+ Get decimated(target) frame width
+ */
+ virtual WebRtc_UWord32 DecimatedWidth() const = 0;
+
+ /**
+ Get decimated(target) frame height
+ */
+ virtual WebRtc_UWord32 DecimatedHeight() const = 0 ;
+
+ /**
+ Set the spatial resampling settings of the VPM: The resampler may either be disabled or one of the following:
+ scaling to a close to target dimension followed by crop/pad
+
+ \param[in] resamplingMode
+ Set resampling mode (a member of VideoFrameResampling)
+ */
+ virtual void SetInputFrameResampleMode(VideoFrameResampling
+ resamplingMode) = 0;
+
+ /**
+ Get Processed (decimated) frame
+
+ \param[in] frame pointer to the video frame.
+
+ \param[in] processedFrame pointer (double) to the processed frame
+
+ \return VPM_OK on success, a negative value on error (see error codes)
+ */
+ virtual WebRtc_Word32 PreprocessFrame(const VideoFrame& frame,
+ VideoFrame** processedFrame) = 0;
+
+ /**
+ Return content metrics for the last processed frame
+ */
+ virtual VideoContentMetrics* ContentMetrics() const = 0 ;
+
+ /**
+ Enable content analysis
+ */
+ virtual void EnableContentAnalysis(bool enable) = 0;
+
+};
+
+} //namespace
+
+#endif
diff --git a/modules/video_processing/main/interface/video_processing_defines.h b/modules/video_processing/main/interface/video_processing_defines.h
new file mode 100644
index 00000000..d9bebd4c
--- /dev/null
+++ b/modules/video_processing/main/interface/video_processing_defines.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+/*
+ * video_processing_defines.h
+ * This header file includes the definitions used in the video processor module
+ */
+
+#ifndef WEBRTC_MODULES_INTERFACE_VIDEO_PROCESSING_DEFINES_H
+#define WEBRTC_MODULES_INTERFACE_VIDEO_PROCESSING_DEFINES_H
+
+#include "typedefs.h"
+
+namespace webrtc {
+
+// Error codes
+#define VPM_OK 0
+#define VPM_GENERAL_ERROR -1
+#define VPM_MEMORY -2
+#define VPM_PARAMETER_ERROR -3
+#define VPM_SCALE_ERROR -4
+#define VPM_UNINITIALIZED -5
+#define VPM_UNIMPLEMENTED -6
+
+enum VideoFrameResampling
+{
+ // TODO: Do we still need crop/pad?
+ kNoRescaling, // disables rescaling
+ kFastRescaling, // point
+ kBiLinear, // bi-linear interpolation
+ kBox, // Box inteprolation
+};
+
+} //namespace
+
+#endif
diff --git a/modules/video_processing/main/source/Android.mk b/modules/video_processing/main/source/Android.mk
new file mode 100644
index 00000000..829fa960
--- /dev/null
+++ b/modules/video_processing/main/source/Android.mk
@@ -0,0 +1,59 @@
+# Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS. All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+include $(LOCAL_PATH)/../../../../../android-webrtc.mk
+
+LOCAL_ARM_MODE := arm
+LOCAL_MODULE_CLASS := STATIC_LIBRARIES
+LOCAL_MODULE := libwebrtc_video_processing
+LOCAL_MODULE_TAGS := optional
+LOCAL_CPP_EXTENSION := .cc
+LOCAL_SRC_FILES := \
+ brighten.cc \
+ brightness_detection.cc \
+ color_enhancement.cc \
+ content_analysis.cc \
+ deflickering.cc \
+ denoising.cc \
+ frame_preprocessor.cc \
+ spatial_resampler.cc \
+ video_decimator.cc \
+ video_processing_impl.cc
+
+ifeq ($(TARGET_ARCH),x86)
+LOCAL_SRC_FILES += \
+ content_analysis_sse2.cc
+endif
+
+# Flags passed to both C and C++ files.
+LOCAL_CFLAGS := \
+ $(MY_WEBRTC_COMMON_DEFS)
+
+LOCAL_C_INCLUDES := \
+ $(LOCAL_PATH)/../interface \
+ $(LOCAL_PATH)/../../../.. \
+ $(LOCAL_PATH)/../../../interface \
+ $(LOCAL_PATH)/../../../audio_coding/main/interface \
+ $(LOCAL_PATH)/../../../utility/interface \
+ $(LOCAL_PATH)/../../../../common_audio/signal_processing/include \
+ $(LOCAL_PATH)/../../../../common_video/vplib/main/interface \
+ $(LOCAL_PATH)/../../../../system_wrappers/interface
+
+LOCAL_SHARED_LIBRARIES := \
+ libcutils \
+ libdl \
+ libstlport
+
+ifndef NDK_ROOT
+include external/stlport/libstlport.mk
+endif
+include $(BUILD_STATIC_LIBRARY)
diff --git a/modules/video_processing/main/source/brighten.cc b/modules/video_processing/main/source/brighten.cc
new file mode 100644
index 00000000..68b0c252
--- /dev/null
+++ b/modules/video_processing/main/source/brighten.cc
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "modules/video_processing/main/source/brighten.h"
+
+#include <cstdlib>
+
+#include "system_wrappers/interface/trace.h"
+
+namespace webrtc {
+namespace VideoProcessing {
+
+WebRtc_Word32 Brighten(VideoFrame* frame, int delta) {
+ assert(frame);
+ if (frame->Buffer() == NULL) {
+ WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoPreocessing, -1,
+ "Null frame pointer");
+ return VPM_PARAMETER_ERROR;
+ }
+
+ if (frame->Width() <= 0 || frame->Height() <= 0) {
+ WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoPreocessing, -1,
+ "Invalid frame size");
+ return VPM_PARAMETER_ERROR;
+ }
+
+ int numPixels = frame->Width() * frame->Height();
+
+ int lookUp[256];
+ for (int i = 0; i < 256; i++) {
+ int val = i + delta;
+ lookUp[i] = ((((val < 0) ? 0 : val) > 255) ? 255 : val);
+ }
+
+ WebRtc_UWord8* tempPtr = frame->Buffer();
+
+ for (int i = 0; i < numPixels; i++) {
+ *tempPtr = static_cast<WebRtc_UWord8>(lookUp[*tempPtr]);
+ tempPtr++;
+ }
+ return VPM_OK;
+}
+
+} // namespace VideoProcessing
+} // namespace webrtc
diff --git a/modules/video_processing/main/source/brighten.h b/modules/video_processing/main/source/brighten.h
new file mode 100644
index 00000000..319cc6f5
--- /dev/null
+++ b/modules/video_processing/main/source/brighten.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef MODULES_VIDEO_PROCESSING_MAIN_SOURCE_BRIGHTEN_H_
+#define MODULES_VIDEO_PROCESSING_MAIN_SOURCE_BRIGHTEN_H_
+
+#include "typedefs.h"
+#include "modules/video_processing/main/interface/video_processing.h"
+
+namespace webrtc {
+namespace VideoProcessing {
+
+WebRtc_Word32 Brighten(VideoFrame* frame, int delta);
+
+} // namespace VideoProcessing
+} // namespace webrtc
+
+#endif // MODULES_VIDEO_PROCESSING_MAIN_SOURCE_BRIGHTEN_H_
diff --git a/modules/video_processing/main/source/brightness_detection.cc b/modules/video_processing/main/source/brightness_detection.cc
new file mode 100644
index 00000000..07ca7e7c
--- /dev/null
+++ b/modules/video_processing/main/source/brightness_detection.cc
@@ -0,0 +1,203 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "video_processing.h"
+#include "brightness_detection.h"
+#include "trace.h"
+
+#include <math.h>
+
+namespace webrtc {
+
+VPMBrightnessDetection::VPMBrightnessDetection() :
+ _id(0)
+{
+ Reset();
+}
+
+VPMBrightnessDetection::~VPMBrightnessDetection()
+{
+}
+
+WebRtc_Word32
+VPMBrightnessDetection::ChangeUniqueId(const WebRtc_Word32 id)
+{
+ _id = id;
+ return VPM_OK;
+}
+
+void
+VPMBrightnessDetection::Reset()
+{
+ _frameCntBright = 0;
+ _frameCntDark = 0;
+}
+
+WebRtc_Word32
+VPMBrightnessDetection::ProcessFrame(const VideoFrame& frame,
+ const VideoProcessingModule::FrameStats&
+ stats)
+{
+ if (frame.Buffer() == NULL)
+ {
+ WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoPreocessing, _id,
+ "Null frame pointer");
+ return VPM_PARAMETER_ERROR;
+ }
+ int width = frame.Width();
+ int height = frame.Height();
+
+ if (width == 0 || height == 0)
+ {
+ WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoPreocessing, _id,
+ "Invalid frame size");
+ return VPM_PARAMETER_ERROR;
+ }
+
+ if (!VideoProcessingModule::ValidFrameStats(stats))
+ {
+ WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoPreocessing, _id,
+ "Invalid frame stats");
+ return VPM_PARAMETER_ERROR;
+ }
+
+ const WebRtc_UWord8 frameCntAlarm = 2;
+
+ // Get proportion in lowest bins
+ WebRtc_UWord8 lowTh = 20;
+ float propLow = 0;
+ for (WebRtc_UWord32 i = 0; i < lowTh; i++)
+ {
+ propLow += stats.hist[i];
+ }
+ propLow /= stats.numPixels;
+
+ // Get proportion in highest bins
+ unsigned char highTh = 230;
+ float propHigh = 0;
+ for (WebRtc_UWord32 i = highTh; i < 256; i++)
+ {
+ propHigh += stats.hist[i];
+ }
+ propHigh /= stats.numPixels;
+
+ if(propHigh < 0.4)
+ {
+ if (stats.mean < 90 || stats.mean > 170)
+ {
+ // Standard deviation of Y
+ float stdY = 0;
+ uint8_t* buffer = frame.Buffer();
+ for (int h = 0; h < height; h += (1 << stats.subSamplHeight))
+ {
+ WebRtc_UWord32 row = h*width;
+ for (int w = 0; w < width; w += (1 << stats.subSamplWidth))
+ {
+ stdY += (buffer[w + row] - stats.mean) * (buffer[w + row] -
+ stats.mean);
+ }
+ }
+ stdY = sqrt(stdY / stats.numPixels);
+
+ // Get percentiles
+ WebRtc_UWord32 sum = 0;
+ WebRtc_UWord32 medianY = 140;
+ WebRtc_UWord32 perc05 = 0;
+ WebRtc_UWord32 perc95 = 255;
+ float posPerc05 = stats.numPixels * 0.05f;
+ float posMedian = stats.numPixels * 0.5f;
+ float posPerc95 = stats.numPixels * 0.95f;
+ for (WebRtc_UWord32 i = 0; i < 256; i++)
+ {
+ sum += stats.hist[i];
+
+ if (sum < posPerc05)
+ {
+ perc05 = i; // 5th perc
+ }
+ if (sum < posMedian)
+ {
+ medianY = i; // 50th perc
+ }
+ if (sum < posPerc95)
+ {
+ perc95 = i; // 95th perc
+ }
+ else
+ {
+ break;
+ }
+ }
+
+ // Check if image is too dark
+ if ((stdY < 55) && (perc05 < 50))
+ {
+ if (medianY < 60 || stats.mean < 80 || perc95 < 130 ||
+ propLow > 0.20)
+ {
+ _frameCntDark++;
+ }
+ else
+ {
+ _frameCntDark = 0;
+ }
+ }
+ else
+ {
+ _frameCntDark = 0;
+ }
+
+ // Check if image is too bright
+ if ((stdY < 52) && (perc95 > 200) && (medianY > 160))
+ {
+ if (medianY > 185 || stats.mean > 185 || perc05 > 140 ||
+ propHigh > 0.25)
+ {
+ _frameCntBright++;
+ }
+ else
+ {
+ _frameCntBright = 0;
+ }
+ }
+ else
+ {
+ _frameCntBright = 0;
+ }
+
+ }
+ else
+ {
+ _frameCntDark = 0;
+ _frameCntBright = 0;
+ }
+
+ }
+ else
+ {
+ _frameCntBright++;
+ _frameCntDark = 0;
+ }
+
+ if (_frameCntDark > frameCntAlarm)
+ {
+ return VideoProcessingModule::kDarkWarning;
+ }
+ else if (_frameCntBright > frameCntAlarm)
+ {
+ return VideoProcessingModule::kBrightWarning;
+ }
+ else
+ {
+ return VideoProcessingModule::kNoWarning;
+ }
+}
+
+} //namespace
diff --git a/modules/video_processing/main/source/brightness_detection.h b/modules/video_processing/main/source/brightness_detection.h
new file mode 100644
index 00000000..63f48169
--- /dev/null
+++ b/modules/video_processing/main/source/brightness_detection.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+/*
+ * brightness_detection.h
+ */
+#ifndef VPM_BRIGHTNESS_DETECTION_H
+#define VPM_BRIGHTNESS_DETECTION_H
+
+#include "typedefs.h"
+#include "video_processing.h"
+
+namespace webrtc {
+
+class VPMBrightnessDetection
+{
+public:
+ VPMBrightnessDetection();
+ ~VPMBrightnessDetection();
+
+ WebRtc_Word32 ChangeUniqueId(WebRtc_Word32 id);
+
+ void Reset();
+
+ WebRtc_Word32 ProcessFrame(const VideoFrame& frame,
+ const VideoProcessingModule::FrameStats& stats);
+
+private:
+ WebRtc_Word32 _id;
+
+ WebRtc_UWord32 _frameCntBright;
+ WebRtc_UWord32 _frameCntDark;
+};
+
+} //namespace
+
+#endif // VPM_BRIGHTNESS_DETECTION_H
diff --git a/modules/video_processing/main/source/color_enhancement.cc b/modules/video_processing/main/source/color_enhancement.cc
new file mode 100644
index 00000000..2cc39d32
--- /dev/null
+++ b/modules/video_processing/main/source/color_enhancement.cc
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "color_enhancement.h"
+#include "color_enhancement_private.h"
+#include "trace.h"
+#include <cstdlib> // NULL
+
+namespace webrtc {
+
+namespace VideoProcessing
+{
+ WebRtc_Word32
+ ColorEnhancement(VideoFrame* frame)
+ {
+ assert(frame);
+ // pointers to U and V color pixels
+ WebRtc_UWord8* ptrU;
+ WebRtc_UWord8* ptrV;
+ WebRtc_UWord8 tempChroma;
+ const unsigned int size_y = frame->Width() * frame->Height();
+ const unsigned int size_uv = ((frame->Width() + 1) / 2) *
+ ((frame->Height() + 1 ) / 2);
+
+
+ if (frame->Buffer() == NULL)
+ {
+ WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoPreocessing,
+ -1, "Null frame pointer");
+ return VPM_GENERAL_ERROR;
+ }
+
+ if (frame->Width() == 0 || frame->Height() == 0)
+ {
+ WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoPreocessing,
+ -1, "Invalid frame size");
+ return VPM_GENERAL_ERROR;
+ }
+
+ // set pointers to first U and V pixels (skip luminance)
+ ptrU = frame->Buffer() + size_y;
+ ptrV = ptrU + size_uv;
+
+ // loop through all chrominance pixels and modify color
+ for (unsigned int ix = 0; ix < size_uv; ix++)
+ {
+ tempChroma = colorTable[*ptrU][*ptrV];
+ *ptrV = colorTable[*ptrV][*ptrU];
+ *ptrU = tempChroma;
+
+ // increment pointers
+ ptrU++;
+ ptrV++;
+ }
+ return VPM_OK;
+ }
+
+} //namespace
+
+} //namespace webrtc
diff --git a/modules/video_processing/main/source/color_enhancement.h b/modules/video_processing/main/source/color_enhancement.h
new file mode 100644
index 00000000..33846576
--- /dev/null
+++ b/modules/video_processing/main/source/color_enhancement.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+/*
+ * color_enhancement.h
+ */
+#ifndef VPM_COLOR_ENHANCEMENT_H
+#define VPM_COLOR_ENHANCEMENT_H
+
+#include "typedefs.h"
+#include "video_processing.h"
+
+namespace webrtc {
+
+namespace VideoProcessing
+{
+ WebRtc_Word32 ColorEnhancement(VideoFrame* frame);
+}
+
+} //namespace
+
+#endif // VPM_COLOR_ENHANCEMENT_H
diff --git a/modules/video_processing/main/source/color_enhancement_private.h b/modules/video_processing/main/source/color_enhancement_private.h
new file mode 100644
index 00000000..b88fc1a9
--- /dev/null
+++ b/modules/video_processing/main/source/color_enhancement_private.h
@@ -0,0 +1,273 @@
+#ifndef VPM_COLOR_ENHANCEMENT_PRIVATE_H
+#define VPM_COLOR_ENHANCEMENT_PRIVATE_H
+
+#include "typedefs.h"
+
+namespace webrtc {
+
+//Table created with Matlab script createTable.m
+//Usage:
+// Umod=colorTable[U][V]
+// Vmod=colorTable[V][U]
+static const WebRtc_UWord8 colorTable[256][256] = {
+ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
+ {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
+ {2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2},
+ {3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3},
+ {4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4},
+ {5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5},
+ {6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6},
+ {7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7},
+ {8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8},
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+ {245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245, 245},
+ {246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246, 246},
+ {247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247, 247},
+ {248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248, 248},
+ {249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249, 249},
+ {250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250, 250},
+ {251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251},
+ {252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252, 252},
+ {253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253},
+ {254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254, 254},
+ {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}
+};
+
+} //namespace
+
+#endif // VPM_COLOR_ENHANCEMENT_PRIVATE_H
diff --git a/modules/video_processing/main/source/content_analysis.cc b/modules/video_processing/main/source/content_analysis.cc
new file mode 100644
index 00000000..77cdcd42
--- /dev/null
+++ b/modules/video_processing/main/source/content_analysis.cc
@@ -0,0 +1,337 @@
+/*
+ * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+#include "content_analysis.h"
+#include "tick_util.h"
+#include "system_wrappers/interface/cpu_features_wrapper.h"
+
+#include <math.h>
+#include <stdlib.h>
+
+namespace webrtc {
+
+VPMContentAnalysis::VPMContentAnalysis(bool runtime_cpu_detection):
+_origFrame(NULL),
+_prevFrame(NULL),
+_width(0),
+_height(0),
+_skipNum(1),
+_border(8),
+_motionMagnitude(0.0f),
+_spatialPredErr(0.0f),
+_spatialPredErrH(0.0f),
+_spatialPredErrV(0.0f),
+_firstFrame(true),
+_CAInit(false),
+_cMetrics(NULL)
+{
+ ComputeSpatialMetrics = &VPMContentAnalysis::ComputeSpatialMetrics_C;
+ TemporalDiffMetric = &VPMContentAnalysis::TemporalDiffMetric_C;
+
+ if (runtime_cpu_detection)
+ {
+#if defined(WEBRTC_ARCH_X86_FAMILY)
+ if (WebRtc_GetCPUInfo(kSSE2))
+ {
+ ComputeSpatialMetrics =
+ &VPMContentAnalysis::ComputeSpatialMetrics_SSE2;
+ TemporalDiffMetric = &VPMContentAnalysis::TemporalDiffMetric_SSE2;
+ }
+#endif
+ }
+
+ Release();
+}
+
+VPMContentAnalysis::~VPMContentAnalysis()
+{
+ Release();
+}
+
+
+VideoContentMetrics*
+VPMContentAnalysis::ComputeContentMetrics(const VideoFrame& inputFrame)
+{
+ if (inputFrame.Buffer() == NULL)
+ {
+ return NULL;
+ }
+
+ // Init if needed (native dimension change)
+ if (_width != static_cast<int>(inputFrame.Width()) ||
+ _height != static_cast<int>(inputFrame.Height()))
+ {
+ if (VPM_OK != Initialize(static_cast<int>(inputFrame.Width()),
+ static_cast<int>(inputFrame.Height())))
+ {
+ return NULL;
+ }
+ }
+
+ _origFrame = inputFrame.Buffer();
+
+ // compute spatial metrics: 3 spatial prediction errors
+ (this->*ComputeSpatialMetrics)();
+
+ // compute motion metrics
+ if (_firstFrame == false)
+ ComputeMotionMetrics();
+
+ // saving current frame as previous one: Y only
+ memcpy(_prevFrame, _origFrame, _width * _height);
+
+ _firstFrame = false;
+ _CAInit = true;
+
+ return ContentMetrics();
+}
+
+WebRtc_Word32
+VPMContentAnalysis::Release()
+{
+ if (_cMetrics != NULL)
+ {
+ delete _cMetrics;
+ _cMetrics = NULL;
+ }
+
+ if (_prevFrame != NULL)
+ {
+ delete [] _prevFrame;
+ _prevFrame = NULL;
+ }
+
+ _width = 0;
+ _height = 0;
+ _firstFrame = true;
+
+ return VPM_OK;
+}
+
+WebRtc_Word32
+VPMContentAnalysis::Initialize(int width, int height)
+{
+ _width = width;
+ _height = height;
+ _firstFrame = true;
+
+ // skip parameter: # of skipped rows: for complexity reduction
+ // temporal also currently uses it for column reduction.
+ _skipNum = 1;
+
+ // use skipNum = 2 for 4CIF, WHD
+ if ( (_height >= 576) && (_width >= 704) )
+ {
+ _skipNum = 2;
+ }
+ // use skipNum = 4 for FULLL_HD images
+ if ( (_height >= 1080) && (_width >= 1920) )
+ {
+ _skipNum = 4;
+ }
+
+ if (_cMetrics != NULL)
+ {
+ delete _cMetrics;
+ }
+
+ if (_prevFrame != NULL)
+ {
+ delete [] _prevFrame;
+ }
+
+ // Spatial Metrics don't work on a border of 8. Minimum processing
+ // block size is 16 pixels. So make sure the width and height support this.
+ if (_width <= 32 || _height <= 32)
+ {
+ _CAInit = false;
+ return VPM_PARAMETER_ERROR;
+ }
+
+ _cMetrics = new VideoContentMetrics();
+ if (_cMetrics == NULL)
+ {
+ return VPM_MEMORY;
+ }
+
+ _prevFrame = new WebRtc_UWord8[_width * _height] ; // Y only
+ if (_prevFrame == NULL)
+ {
+ return VPM_MEMORY;
+ }
+
+ return VPM_OK;
+}
+
+
+// Compute motion metrics: magnitude over non-zero motion vectors,
+// and size of zero cluster
+WebRtc_Word32
+VPMContentAnalysis::ComputeMotionMetrics()
+{
+
+ // Motion metrics: only one is derived from normalized
+ // (MAD) temporal difference
+ (this->*TemporalDiffMetric)();
+
+ return VPM_OK;
+}
+
+// Normalized temporal difference (MAD): used as a motion level metric
+// Normalize MAD by spatial contrast: images with more contrast
+// (pixel variance) likely have larger temporal difference
+// To reduce complexity, we compute the metric for a reduced set of points.
+WebRtc_Word32
+VPMContentAnalysis::TemporalDiffMetric_C()
+{
+ // size of original frame
+ int sizei = _height;
+ int sizej = _width;
+
+ WebRtc_UWord32 tempDiffSum = 0;
+ WebRtc_UWord32 pixelSum = 0;
+ WebRtc_UWord64 pixelSqSum = 0;
+
+ WebRtc_UWord32 numPixels = 0; // counter for # of pixels
+
+ const int width_end = ((_width - 2*_border) & -16) + _border;
+
+ for(int i = _border; i < sizei - _border; i += _skipNum)
+ {
+ for(int j = _border; j < width_end; j++)
+ {
+ numPixels += 1;
+ int ssn = i * sizej + j;
+
+ WebRtc_UWord8 currPixel = _origFrame[ssn];
+ WebRtc_UWord8 prevPixel = _prevFrame[ssn];
+
+ tempDiffSum += (WebRtc_UWord32)
+ abs((WebRtc_Word16)(currPixel - prevPixel));
+ pixelSum += (WebRtc_UWord32) currPixel;
+ pixelSqSum += (WebRtc_UWord64) (currPixel * currPixel);
+ }
+ }
+
+ // default
+ _motionMagnitude = 0.0f;
+
+ if (tempDiffSum == 0)
+ {
+ return VPM_OK;
+ }
+
+ // normalize over all pixels
+ float const tempDiffAvg = (float)tempDiffSum / (float)(numPixels);
+ float const pixelSumAvg = (float)pixelSum / (float)(numPixels);
+ float const pixelSqSumAvg = (float)pixelSqSum / (float)(numPixels);
+ float contrast = pixelSqSumAvg - (pixelSumAvg * pixelSumAvg);
+
+ if (contrast > 0.0)
+ {
+ contrast = sqrt(contrast);
+ _motionMagnitude = tempDiffAvg/contrast;
+ }
+
+ return VPM_OK;
+
+}
+
+// Compute spatial metrics:
+// To reduce complexity, we compute the metric for a reduced set of points.
+// The spatial metrics are rough estimates of the prediction error cost for
+// each QM spatial mode: 2x2,1x2,2x1
+// The metrics are a simple estimate of the up-sampling prediction error,
+// estimated assuming sub-sampling for decimation (no filtering),
+// and up-sampling back up with simple bilinear interpolation.
+WebRtc_Word32
+VPMContentAnalysis::ComputeSpatialMetrics_C()
+{
+ //size of original frame
+ const int sizei = _height;
+ const int sizej = _width;
+
+ // pixel mean square average: used to normalize the spatial metrics
+ WebRtc_UWord32 pixelMSA = 0;
+
+ WebRtc_UWord32 spatialErrSum = 0;
+ WebRtc_UWord32 spatialErrVSum = 0;
+ WebRtc_UWord32 spatialErrHSum = 0;
+
+ // make sure work section is a multiple of 16
+ const int width_end = ((sizej - 2*_border) & -16) + _border;
+
+ for(int i = _border; i < sizei - _border; i += _skipNum)
+ {
+ for(int j = _border; j < width_end; j++)
+ {
+
+ int ssn1= i * sizej + j;
+ int ssn2 = (i + 1) * sizej + j; // bottom
+ int ssn3 = (i - 1) * sizej + j; // top
+ int ssn4 = i * sizej + j + 1; // right
+ int ssn5 = i * sizej + j - 1; // left
+
+ WebRtc_UWord16 refPixel1 = _origFrame[ssn1] << 1;
+ WebRtc_UWord16 refPixel2 = _origFrame[ssn1] << 2;
+
+ WebRtc_UWord8 bottPixel = _origFrame[ssn2];
+ WebRtc_UWord8 topPixel = _origFrame[ssn3];
+ WebRtc_UWord8 rightPixel = _origFrame[ssn4];
+ WebRtc_UWord8 leftPixel = _origFrame[ssn5];
+
+ spatialErrSum += (WebRtc_UWord32) abs((WebRtc_Word16)(refPixel2
+ - (WebRtc_UWord16)(bottPixel + topPixel
+ + leftPixel + rightPixel)));
+ spatialErrVSum += (WebRtc_UWord32) abs((WebRtc_Word16)(refPixel1
+ - (WebRtc_UWord16)(bottPixel + topPixel)));
+ spatialErrHSum += (WebRtc_UWord32) abs((WebRtc_Word16)(refPixel1
+ - (WebRtc_UWord16)(leftPixel + rightPixel)));
+
+ pixelMSA += _origFrame[ssn1];
+ }
+ }
+
+ // normalize over all pixels
+ const float spatialErr = (float)(spatialErrSum >> 2);
+ const float spatialErrH = (float)(spatialErrHSum >> 1);
+ const float spatialErrV = (float)(spatialErrVSum >> 1);
+ const float norm = (float)pixelMSA;
+
+ // 2X2:
+ _spatialPredErr = spatialErr / norm;
+
+ // 1X2:
+ _spatialPredErrH = spatialErrH / norm;
+
+ // 2X1:
+ _spatialPredErrV = spatialErrV / norm;
+
+ return VPM_OK;
+}
+
+VideoContentMetrics*
+VPMContentAnalysis::ContentMetrics()
+{
+ if (_CAInit == false)
+ {
+ return NULL;
+ }
+
+ _cMetrics->spatial_pred_err = _spatialPredErr;
+ _cMetrics->spatial_pred_err_h = _spatialPredErrH;
+ _cMetrics->spatial_pred_err_v = _spatialPredErrV;
+ // Motion metric: normalized temporal difference (MAD)
+ _cMetrics->motion_magnitude = _motionMagnitude;
+
+ return _cMetrics;
+
+}
+
+} // namespace
diff --git a/modules/video_processing/main/source/content_analysis.h b/modules/video_processing/main/source/content_analysis.h
new file mode 100644
index 00000000..6724af51
--- /dev/null
+++ b/modules/video_processing/main/source/content_analysis.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef VPM_CONTENT_ANALYSIS_H
+#define VPM_CONTENT_ANALYSIS_H
+
+#include "typedefs.h"
+#include "module_common_types.h"
+#include "video_processing_defines.h"
+
+namespace webrtc {
+
+class VPMContentAnalysis
+{
+public:
+ // When |runtime_cpu_detection| is true, runtime selection of an optimized
+ // code path is allowed.
+ VPMContentAnalysis(bool runtime_cpu_detection);
+ ~VPMContentAnalysis();
+
+ // Initialize ContentAnalysis - should be called prior to
+ // extractContentFeature
+ // Inputs: width, height
+ // Return value: 0 if OK, negative value upon error
+ WebRtc_Word32 Initialize(int width, int height);
+
+ // Extract content Feature - main function of ContentAnalysis
+ // Input: new frame
+ // Return value: pointer to structure containing content Analysis
+ // metrics or NULL value upon error
+ VideoContentMetrics* ComputeContentMetrics(const VideoFrame& inputFrame);
+
+ // Release all allocated memory
+ // Output: 0 if OK, negative value upon error
+ WebRtc_Word32 Release();
+
+private:
+
+ // return motion metrics
+ VideoContentMetrics* ContentMetrics();
+
+ // Normalized temporal difference metric: for motion magnitude
+ typedef WebRtc_Word32 (VPMContentAnalysis::*TemporalDiffMetricFunc)();
+ TemporalDiffMetricFunc TemporalDiffMetric;
+ WebRtc_Word32 TemporalDiffMetric_C();
+
+ // Motion metric method: call 2 metrics (magnitude and size)
+ WebRtc_Word32 ComputeMotionMetrics();
+
+ // Spatial metric method: computes the 3 frame-average spatial
+ // prediction errors (1x2,2x1,2x2)
+ typedef WebRtc_Word32 (VPMContentAnalysis::*ComputeSpatialMetricsFunc)();
+ ComputeSpatialMetricsFunc ComputeSpatialMetrics;
+ WebRtc_Word32 ComputeSpatialMetrics_C();
+
+#if defined(WEBRTC_ARCH_X86_FAMILY)
+ WebRtc_Word32 ComputeSpatialMetrics_SSE2();
+ WebRtc_Word32 TemporalDiffMetric_SSE2();
+#endif
+
+ const WebRtc_UWord8* _origFrame;
+ WebRtc_UWord8* _prevFrame;
+ int _width;
+ int _height;
+ int _skipNum;
+ int _border;
+
+ // Content Metrics:
+ // stores the local average of the metrics
+ float _motionMagnitude; // motion class
+ float _spatialPredErr; // spatial class
+ float _spatialPredErrH; // spatial class
+ float _spatialPredErrV; // spatial class
+ bool _firstFrame;
+ bool _CAInit;
+
+ VideoContentMetrics* _cMetrics;
+
+}; // end of VPMContentAnalysis class definition
+
+} // namespace
+
+#endif
diff --git a/modules/video_processing/main/source/content_analysis_sse2.cc b/modules/video_processing/main/source/content_analysis_sse2.cc
new file mode 100644
index 00000000..f505850d
--- /dev/null
+++ b/modules/video_processing/main/source/content_analysis_sse2.cc
@@ -0,0 +1,300 @@
+/*
+ * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "content_analysis.h"
+
+#include <emmintrin.h>
+#include <math.h>
+
+namespace webrtc {
+
+WebRtc_Word32
+VPMContentAnalysis::TemporalDiffMetric_SSE2()
+{
+ WebRtc_UWord32 numPixels = 0; // counter for # of pixels
+
+ const WebRtc_UWord8* imgBufO = _origFrame + _border*_width + _border;
+ const WebRtc_UWord8* imgBufP = _prevFrame + _border*_width + _border;
+
+ const WebRtc_Word32 width_end = ((_width - 2*_border) & -16) + _border;
+
+ __m128i sad_64 = _mm_setzero_si128();
+ __m128i sum_64 = _mm_setzero_si128();
+ __m128i sqsum_64 = _mm_setzero_si128();
+ const __m128i z = _mm_setzero_si128();
+
+ for(WebRtc_UWord16 i = 0; i < (_height - 2*_border); i += _skipNum)
+ {
+ __m128i sqsum_32 = _mm_setzero_si128();
+
+ const WebRtc_UWord8 *lineO = imgBufO;
+ const WebRtc_UWord8 *lineP = imgBufP;
+
+ // Work on 16 pixels at a time. For HD content with a width of 1920
+ // this loop will run ~67 times (depending on border). Maximum for
+ // abs(o-p) and sum(o) will be 255. _mm_sad_epu8 produces 2 64 bit
+ // results which are then accumulated. There is no chance of
+ // rollover for these two accumulators.
+ // o*o will have a maximum of 255*255 = 65025. This will roll over
+ // a 16 bit accumulator as 67*65025 > 65535, but will fit in a
+ // 32 bit accumulator.
+ for(WebRtc_UWord16 j = 0; j < width_end - _border; j += 16)
+ {
+ const __m128i o = _mm_loadu_si128((__m128i*)(lineO));
+ const __m128i p = _mm_loadu_si128((__m128i*)(lineP));
+
+ lineO += 16;
+ lineP += 16;
+
+ // abs pixel difference between frames
+ sad_64 = _mm_add_epi64 (sad_64, _mm_sad_epu8(o, p));
+
+ // sum of all pixels in frame
+ sum_64 = _mm_add_epi64 (sum_64, _mm_sad_epu8(o, z));
+
+ // squared sum of all pixels in frame
+ const __m128i olo = _mm_unpacklo_epi8(o,z);
+ const __m128i ohi = _mm_unpackhi_epi8(o,z);
+
+ const __m128i sqsum_32_lo = _mm_madd_epi16(olo, olo);
+ const __m128i sqsum_32_hi = _mm_madd_epi16(ohi, ohi);
+
+ sqsum_32 = _mm_add_epi32(sqsum_32, sqsum_32_lo);
+ sqsum_32 = _mm_add_epi32(sqsum_32, sqsum_32_hi);
+ }
+
+ // Add to 64 bit running sum as to not roll over.
+ sqsum_64 = _mm_add_epi64(sqsum_64,
+ _mm_add_epi64(_mm_unpackhi_epi32(sqsum_32,z),
+ _mm_unpacklo_epi32(sqsum_32,z)));
+
+ imgBufO += _width * _skipNum;
+ imgBufP += _width * _skipNum;
+ numPixels += (width_end - _border);
+ }
+
+ __m128i sad_final_128;
+ __m128i sum_final_128;
+ __m128i sqsum_final_128;
+
+ // bring sums out of vector registers and into integer register
+ // domain, summing them along the way
+ _mm_store_si128 (&sad_final_128, sad_64);
+ _mm_store_si128 (&sum_final_128, sum_64);
+ _mm_store_si128 (&sqsum_final_128, sqsum_64);
+
+ WebRtc_UWord64 *sad_final_64 =
+ reinterpret_cast<WebRtc_UWord64*>(&sad_final_128);
+ WebRtc_UWord64 *sum_final_64 =
+ reinterpret_cast<WebRtc_UWord64*>(&sum_final_128);
+ WebRtc_UWord64 *sqsum_final_64 =
+ reinterpret_cast<WebRtc_UWord64*>(&sqsum_final_128);
+
+ const WebRtc_UWord32 pixelSum = sum_final_64[0] + sum_final_64[1];
+ const WebRtc_UWord64 pixelSqSum = sqsum_final_64[0] + sqsum_final_64[1];
+ const WebRtc_UWord32 tempDiffSum = sad_final_64[0] + sad_final_64[1];
+
+ // default
+ _motionMagnitude = 0.0f;
+
+ if (tempDiffSum == 0)
+ {
+ return VPM_OK;
+ }
+
+ // normalize over all pixels
+ const float tempDiffAvg = (float)tempDiffSum / (float)(numPixels);
+ const float pixelSumAvg = (float)pixelSum / (float)(numPixels);
+ const float pixelSqSumAvg = (float)pixelSqSum / (float)(numPixels);
+ float contrast = pixelSqSumAvg - (pixelSumAvg * pixelSumAvg);
+
+ if (contrast > 0.0)
+ {
+ contrast = sqrt(contrast);
+ _motionMagnitude = tempDiffAvg/contrast;
+ }
+
+ return VPM_OK;
+}
+
+WebRtc_Word32
+VPMContentAnalysis::ComputeSpatialMetrics_SSE2()
+{
+ const WebRtc_UWord8* imgBuf = _origFrame + _border*_width;
+ const WebRtc_Word32 width_end = ((_width - 2*_border) & -16) + _border;
+
+ __m128i se_32 = _mm_setzero_si128();
+ __m128i sev_32 = _mm_setzero_si128();
+ __m128i seh_32 = _mm_setzero_si128();
+ __m128i msa_32 = _mm_setzero_si128();
+ const __m128i z = _mm_setzero_si128();
+
+ // Error is accumulated as a 32 bit value. Looking at HD content with a
+ // height of 1080 lines, or about 67 macro blocks. If the 16 bit row
+ // value is maxed out at 65529 for every row, 65529*1080 = 70777800, which
+ // will not roll over a 32 bit accumulator.
+ // _skipNum is also used to reduce the number of rows
+ for(WebRtc_Word32 i = 0; i < (_height - 2*_border); i += _skipNum)
+ {
+ __m128i se_16 = _mm_setzero_si128();
+ __m128i sev_16 = _mm_setzero_si128();
+ __m128i seh_16 = _mm_setzero_si128();
+ __m128i msa_16 = _mm_setzero_si128();
+
+ // Row error is accumulated as a 16 bit value. There are 8
+ // accumulators. Max value of a 16 bit number is 65529. Looking
+ // at HD content, 1080p, has a width of 1920, 120 macro blocks.
+ // A mb at a time is processed at a time. Absolute max error at
+ // a point would be abs(0-255+255+255+255) which equals 1020.
+ // 120*1020 = 122400. The probability of hitting this is quite low
+ // on well behaved content. A specially crafted image could roll over.
+ // _border could also be adjusted to concentrate on just the center of
+ // the images for an HD capture in order to reduce the possiblity of
+ // rollover.
+ const WebRtc_UWord8 *lineTop = imgBuf - _width + _border;
+ const WebRtc_UWord8 *lineCen = imgBuf + _border;
+ const WebRtc_UWord8 *lineBot = imgBuf + _width + _border;
+
+ for(WebRtc_Word32 j = 0; j < width_end - _border; j += 16)
+ {
+ const __m128i t = _mm_loadu_si128((__m128i*)(lineTop));
+ const __m128i l = _mm_loadu_si128((__m128i*)(lineCen - 1));
+ const __m128i c = _mm_loadu_si128((__m128i*)(lineCen));
+ const __m128i r = _mm_loadu_si128((__m128i*)(lineCen + 1));
+ const __m128i b = _mm_loadu_si128((__m128i*)(lineBot));
+
+ lineTop += 16;
+ lineCen += 16;
+ lineBot += 16;
+
+ // center pixel unpacked
+ __m128i clo = _mm_unpacklo_epi8(c,z);
+ __m128i chi = _mm_unpackhi_epi8(c,z);
+
+ // left right pixels unpacked and added together
+ const __m128i lrlo = _mm_add_epi16(_mm_unpacklo_epi8(l,z),
+ _mm_unpacklo_epi8(r,z));
+ const __m128i lrhi = _mm_add_epi16(_mm_unpackhi_epi8(l,z),
+ _mm_unpackhi_epi8(r,z));
+
+ // top & bottom pixels unpacked and added together
+ const __m128i tblo = _mm_add_epi16(_mm_unpacklo_epi8(t,z),
+ _mm_unpacklo_epi8(b,z));
+ const __m128i tbhi = _mm_add_epi16(_mm_unpackhi_epi8(t,z),
+ _mm_unpackhi_epi8(b,z));
+
+ // running sum of all pixels
+ msa_16 = _mm_add_epi16(msa_16, _mm_add_epi16(chi, clo));
+
+ clo = _mm_slli_epi16(clo, 1);
+ chi = _mm_slli_epi16(chi, 1);
+ const __m128i sevtlo = _mm_subs_epi16(clo, tblo);
+ const __m128i sevthi = _mm_subs_epi16(chi, tbhi);
+ const __m128i sehtlo = _mm_subs_epi16(clo, lrlo);
+ const __m128i sehthi = _mm_subs_epi16(chi, lrhi);
+
+ clo = _mm_slli_epi16(clo, 1);
+ chi = _mm_slli_epi16(chi, 1);
+ const __m128i setlo = _mm_subs_epi16(clo,
+ _mm_add_epi16(lrlo, tblo));
+ const __m128i sethi = _mm_subs_epi16(chi,
+ _mm_add_epi16(lrhi, tbhi));
+
+ // Add to 16 bit running sum
+ se_16 = _mm_add_epi16(se_16,
+ _mm_max_epi16(setlo,
+ _mm_subs_epi16(z, setlo)));
+ se_16 = _mm_add_epi16(se_16,
+ _mm_max_epi16(sethi,
+ _mm_subs_epi16(z, sethi)));
+ sev_16 = _mm_add_epi16(sev_16,
+ _mm_max_epi16(sevtlo,
+ _mm_subs_epi16(z, sevtlo)));
+ sev_16 = _mm_add_epi16(sev_16,
+ _mm_max_epi16(sevthi,
+ _mm_subs_epi16(z, sevthi)));
+ seh_16 = _mm_add_epi16(seh_16,
+ _mm_max_epi16(sehtlo,
+ _mm_subs_epi16(z, sehtlo)));
+ seh_16 = _mm_add_epi16(seh_16,
+ _mm_max_epi16(sehthi,
+ _mm_subs_epi16(z, sehthi)));
+ }
+
+ // Add to 32 bit running sum as to not roll over.
+ se_32 = _mm_add_epi32(se_32,
+ _mm_add_epi32(_mm_unpackhi_epi16(se_16,z),
+ _mm_unpacklo_epi16(se_16,z)));
+ sev_32 = _mm_add_epi32(sev_32,
+ _mm_add_epi32(_mm_unpackhi_epi16(sev_16,z),
+ _mm_unpacklo_epi16(sev_16,z)));
+ seh_32 = _mm_add_epi32(seh_32,
+ _mm_add_epi32(_mm_unpackhi_epi16(seh_16,z),
+ _mm_unpacklo_epi16(seh_16,z)));
+ msa_32 = _mm_add_epi32(msa_32,
+ _mm_add_epi32(_mm_unpackhi_epi16(msa_16,z),
+ _mm_unpacklo_epi16(msa_16,z)));
+
+ imgBuf += _width * _skipNum;
+ }
+
+ __m128i se_128;
+ __m128i sev_128;
+ __m128i seh_128;
+ __m128i msa_128;
+
+ // bring sums out of vector registers and into integer register
+ // domain, summing them along the way
+ _mm_store_si128 (&se_128,
+ _mm_add_epi64(_mm_unpackhi_epi32(se_32,z),
+ _mm_unpacklo_epi32(se_32,z)));
+ _mm_store_si128 (&sev_128,
+ _mm_add_epi64(_mm_unpackhi_epi32(sev_32,z),
+ _mm_unpacklo_epi32(sev_32,z)));
+ _mm_store_si128 (&seh_128,
+ _mm_add_epi64(_mm_unpackhi_epi32(seh_32,z),
+ _mm_unpacklo_epi32(seh_32,z)));
+ _mm_store_si128 (&msa_128,
+ _mm_add_epi64(_mm_unpackhi_epi32(msa_32,z),
+ _mm_unpacklo_epi32(msa_32,z)));
+
+ WebRtc_UWord64 *se_64 =
+ reinterpret_cast<WebRtc_UWord64*>(&se_128);
+ WebRtc_UWord64 *sev_64 =
+ reinterpret_cast<WebRtc_UWord64*>(&sev_128);
+ WebRtc_UWord64 *seh_64 =
+ reinterpret_cast<WebRtc_UWord64*>(&seh_128);
+ WebRtc_UWord64 *msa_64 =
+ reinterpret_cast<WebRtc_UWord64*>(&msa_128);
+
+ const WebRtc_UWord32 spatialErrSum = se_64[0] + se_64[1];
+ const WebRtc_UWord32 spatialErrVSum = sev_64[0] + sev_64[1];
+ const WebRtc_UWord32 spatialErrHSum = seh_64[0] + seh_64[1];
+ const WebRtc_UWord32 pixelMSA = msa_64[0] + msa_64[1];
+
+ // normalize over all pixels
+ const float spatialErr = (float)(spatialErrSum >> 2);
+ const float spatialErrH = (float)(spatialErrHSum >> 1);
+ const float spatialErrV = (float)(spatialErrVSum >> 1);
+ const float norm = (float)pixelMSA;
+
+ // 2X2:
+ _spatialPredErr = spatialErr / norm;
+
+ // 1X2:
+ _spatialPredErrH = spatialErrH / norm;
+
+ // 2X1:
+ _spatialPredErrV = spatialErrV / norm;
+
+ return VPM_OK;
+}
+
+} // namespace webrtc
diff --git a/modules/video_processing/main/source/deflickering.cc b/modules/video_processing/main/source/deflickering.cc
new file mode 100644
index 00000000..f17dc8d8
--- /dev/null
+++ b/modules/video_processing/main/source/deflickering.cc
@@ -0,0 +1,450 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+
+#include <math.h>
+#include <stdlib.h>
+
+#include "deflickering.h"
+#include "trace.h"
+#include "signal_processing_library.h"
+#include "sort.h"
+
+namespace webrtc {
+
+// Detection constants
+enum { kFrequencyDeviation = 39 }; // (Q4) Maximum allowed deviation for detection
+enum { kMinFrequencyToDetect = 32 }; // (Q4) Minimum frequency that can be detected
+enum { kNumFlickerBeforeDetect = 2 }; // Number of flickers before we accept detection
+enum { kMeanValueScaling = 4 }; // (Q4) In power of 2
+enum { kZeroCrossingDeadzone = 10 }; // Deadzone region in terms of pixel values
+
+// Deflickering constants
+// Compute the quantiles over 1 / DownsamplingFactor of the image.
+enum { kDownsamplingFactor = 8 };
+enum { kLog2OfDownsamplingFactor = 3 };
+
+// To generate in Matlab:
+// >> probUW16 = round(2^11 * [0.05,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,0.95,0.97]);
+// >> fprintf('%d, ', probUW16)
+// Resolution reduced to avoid overflow when multiplying with the (potentially) large
+// number of pixels.
+const WebRtc_UWord16 VPMDeflickering::_probUW16[kNumProbs] =
+ {102, 205, 410, 614, 819, 1024, 1229, 1434, 1638, 1843, 1946, 1987}; // <Q11>
+
+// To generate in Matlab:
+// >> numQuants = 14; maxOnlyLength = 5;
+// >> weightUW16 = round(2^15 * [linspace(0.5, 1.0, numQuants - maxOnlyLength)]);
+// >> fprintf('%d, %d,\n ', weightUW16);
+const WebRtc_UWord16 VPMDeflickering::_weightUW16[kNumQuants - kMaxOnlyLength] =
+ {16384, 18432, 20480, 22528, 24576, 26624, 28672, 30720, 32768}; // <Q15>
+
+VPMDeflickering::VPMDeflickering() :
+ _id(0)
+{
+ Reset();
+}
+
+VPMDeflickering::~VPMDeflickering()
+{
+}
+
+WebRtc_Word32
+VPMDeflickering::ChangeUniqueId(const WebRtc_Word32 id)
+{
+ _id = id;
+ return 0;
+}
+
+void
+VPMDeflickering::Reset()
+{
+ _meanBufferLength = 0;
+ _detectionState = 0;
+ _frameRate = 0;
+
+ memset(_meanBuffer, 0, sizeof(WebRtc_Word32) * kMeanBufferLength);
+ memset(_timestampBuffer, 0, sizeof(WebRtc_Word32) * kMeanBufferLength);
+
+ // Initialize the history with a uniformly distributed histogram
+ _quantHistUW8[0][0] = 0;
+ _quantHistUW8[0][kNumQuants - 1] = 255;
+ for (WebRtc_Word32 i = 0; i < kNumProbs; i++)
+ {
+ _quantHistUW8[0][i + 1] = static_cast<WebRtc_UWord8>((WEBRTC_SPL_UMUL_16_16(
+ _probUW16[i], 255) + (1 << 10)) >> 11); // Unsigned round. <Q0>
+ }
+
+ for (WebRtc_Word32 i = 1; i < kFrameHistorySize; i++)
+ {
+ memcpy(_quantHistUW8[i], _quantHistUW8[0], sizeof(WebRtc_UWord8) * kNumQuants);
+ }
+}
+
+WebRtc_Word32
+VPMDeflickering::ProcessFrame(VideoFrame* frame,
+ VideoProcessingModule::FrameStats* stats)
+{
+ assert(frame);
+ WebRtc_UWord32 frameMemory;
+ WebRtc_UWord8 quantUW8[kNumQuants];
+ WebRtc_UWord8 maxQuantUW8[kNumQuants];
+ WebRtc_UWord8 minQuantUW8[kNumQuants];
+ WebRtc_UWord16 targetQuantUW16[kNumQuants];
+ WebRtc_UWord16 incrementUW16;
+ WebRtc_UWord8 mapUW8[256];
+
+ WebRtc_UWord16 tmpUW16;
+ WebRtc_UWord32 tmpUW32;
+ int width = frame->Width();
+ int height = frame->Height();
+
+ if (frame->Buffer() == NULL)
+ {
+ WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoPreocessing, _id,
+ "Null frame pointer");
+ return VPM_GENERAL_ERROR;
+ }
+
+ // Stricter height check due to subsampling size calculation below.
+ if (width == 0 || height < 2)
+ {
+ WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoPreocessing, _id,
+ "Invalid frame size");
+ return VPM_GENERAL_ERROR;
+ }
+
+ if (!VideoProcessingModule::ValidFrameStats(*stats))
+ {
+ WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoPreocessing, _id,
+ "Invalid frame stats");
+ return VPM_GENERAL_ERROR;
+ }
+
+ if (PreDetection(frame->TimeStamp(), *stats) == -1)
+ {
+ return VPM_GENERAL_ERROR;
+ }
+
+ // Flicker detection
+ WebRtc_Word32 detFlicker = DetectFlicker();
+ if (detFlicker < 0)
+ { // Error
+ return VPM_GENERAL_ERROR;
+ }
+ else if (detFlicker != 1)
+ {
+ return 0;
+ }
+
+ // Size of luminance component
+ const WebRtc_UWord32 ySize = height * width;
+
+ const WebRtc_UWord32 ySubSize = width * (((height - 1) >>
+ kLog2OfDownsamplingFactor) + 1);
+ WebRtc_UWord8* ySorted = new WebRtc_UWord8[ySubSize];
+ WebRtc_UWord32 sortRowIdx = 0;
+ for (int i = 0; i < height; i += kDownsamplingFactor)
+ {
+ memcpy(ySorted + sortRowIdx * width,
+ frame->Buffer() + i * width, width);
+ sortRowIdx++;
+ }
+
+ webrtc::Sort(ySorted, ySubSize, webrtc::TYPE_UWord8);
+
+ WebRtc_UWord32 probIdxUW32 = 0;
+ quantUW8[0] = 0;
+ quantUW8[kNumQuants - 1] = 255;
+
+ // Ensure we won't get an overflow below.
+ // In practice, the number of subsampled pixels will not become this large.
+ if (ySubSize > (1 << 21) - 1)
+ {
+ WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoPreocessing, _id,
+ "Subsampled number of pixels too large");
+ return -1;
+ }
+
+ for (WebRtc_Word32 i = 0; i < kNumProbs; i++)
+ {
+ probIdxUW32 = WEBRTC_SPL_UMUL_32_16(ySubSize, _probUW16[i]) >> 11; // <Q0>
+ quantUW8[i + 1] = ySorted[probIdxUW32];
+ }
+
+ delete [] ySorted;
+ ySorted = NULL;
+
+ // Shift history for new frame.
+ memmove(_quantHistUW8[1], _quantHistUW8[0], (kFrameHistorySize - 1) * kNumQuants *
+ sizeof(WebRtc_UWord8));
+ // Store current frame in history.
+ memcpy(_quantHistUW8[0], quantUW8, kNumQuants * sizeof(WebRtc_UWord8));
+
+ // We use a frame memory equal to the ceiling of half the frame rate to ensure we
+ // capture an entire period of flicker.
+ frameMemory = (_frameRate + (1 << 5)) >> 5; // Unsigned ceiling. <Q0>
+ // _frameRate in Q4.
+ if (frameMemory > kFrameHistorySize)
+ {
+ frameMemory = kFrameHistorySize;
+ }
+
+ // Get maximum and minimum.
+ for (WebRtc_Word32 i = 0; i < kNumQuants; i++)
+ {
+ maxQuantUW8[i] = 0;
+ minQuantUW8[i] = 255;
+ for (WebRtc_UWord32 j = 0; j < frameMemory; j++)
+ {
+ if (_quantHistUW8[j][i] > maxQuantUW8[i])
+ {
+ maxQuantUW8[i] = _quantHistUW8[j][i];
+ }
+
+ if (_quantHistUW8[j][i] < minQuantUW8[i])
+ {
+ minQuantUW8[i] = _quantHistUW8[j][i];
+ }
+ }
+ }
+
+ // Get target quantiles.
+ for (WebRtc_Word32 i = 0; i < kNumQuants - kMaxOnlyLength; i++)
+ {
+ targetQuantUW16[i] = static_cast<WebRtc_UWord16>((WEBRTC_SPL_UMUL_16_16(
+ _weightUW16[i], maxQuantUW8[i]) + WEBRTC_SPL_UMUL_16_16((1 << 15) -
+ _weightUW16[i], minQuantUW8[i])) >> 8); // <Q7>
+ }
+
+ for (WebRtc_Word32 i = kNumQuants - kMaxOnlyLength; i < kNumQuants; i++)
+ {
+ targetQuantUW16[i] = ((WebRtc_UWord16)maxQuantUW8[i]) << 7;
+ }
+
+ // Compute the map from input to output pixels.
+ WebRtc_UWord16 mapUW16; // <Q7>
+ for (WebRtc_Word32 i = 1; i < kNumQuants; i++)
+ {
+ // As quant and targetQuant are limited to UWord8, we're safe to use Q7 here.
+ tmpUW32 = static_cast<WebRtc_UWord32>(targetQuantUW16[i] -
+ targetQuantUW16[i - 1]); // <Q7>
+ tmpUW16 = static_cast<WebRtc_UWord16>(quantUW8[i] - quantUW8[i - 1]); // <Q0>
+
+ if (tmpUW16 > 0)
+ {
+ incrementUW16 = static_cast<WebRtc_UWord16>(WebRtcSpl_DivU32U16(tmpUW32,
+ tmpUW16)); // <Q7>
+ }
+ else
+ {
+ // The value is irrelevant; the loop below will only iterate once.
+ incrementUW16 = 0;
+ }
+
+ mapUW16 = targetQuantUW16[i - 1];
+ for (WebRtc_UWord32 j = quantUW8[i - 1]; j < (WebRtc_UWord32)(quantUW8[i] + 1); j++)
+ {
+ mapUW8[j] = (WebRtc_UWord8)((mapUW16 + (1 << 6)) >> 7); // Unsigned round. <Q0>
+ mapUW16 += incrementUW16;
+ }
+ }
+
+ // Map to the output frame.
+ uint8_t* buffer = frame->Buffer();
+ for (WebRtc_UWord32 i = 0; i < ySize; i++)
+ {
+ buffer[i] = mapUW8[buffer[i]];
+ }
+
+ // Frame was altered, so reset stats.
+ VideoProcessingModule::ClearFrameStats(stats);
+
+ return 0;
+}
+
+/**
+ Performs some pre-detection operations. Must be called before
+ DetectFlicker().
+
+ \param[in] timestamp Timestamp of the current frame.
+ \param[in] stats Statistics of the current frame.
+
+ \return 0: Success\n
+ 2: Detection not possible due to flickering frequency too close to
+ zero.\n
+ -1: Error
+*/
+WebRtc_Word32
+VPMDeflickering::PreDetection(const WebRtc_UWord32 timestamp,
+ const VideoProcessingModule::FrameStats& stats)
+{
+ WebRtc_Word32 meanVal; // Mean value of frame (Q4)
+ WebRtc_UWord32 frameRate = 0;
+ WebRtc_Word32 meanBufferLength; // Temp variable
+
+ meanVal = ((stats.sum << kMeanValueScaling) / stats.numPixels);
+ /* Update mean value buffer.
+ * This should be done even though we might end up in an unreliable detection.
+ */
+ memmove(_meanBuffer + 1, _meanBuffer, (kMeanBufferLength - 1) * sizeof(WebRtc_Word32));
+ _meanBuffer[0] = meanVal;
+
+ /* Update timestamp buffer.
+ * This should be done even though we might end up in an unreliable detection.
+ */
+ memmove(_timestampBuffer + 1, _timestampBuffer, (kMeanBufferLength - 1) *
+ sizeof(WebRtc_UWord32));
+ _timestampBuffer[0] = timestamp;
+
+ /* Compute current frame rate (Q4) */
+ if (_timestampBuffer[kMeanBufferLength - 1] != 0)
+ {
+ frameRate = ((90000 << 4) * (kMeanBufferLength - 1));
+ frameRate /= (_timestampBuffer[0] - _timestampBuffer[kMeanBufferLength - 1]);
+ }else if (_timestampBuffer[1] != 0)
+ {
+ frameRate = (90000 << 4) / (_timestampBuffer[0] - _timestampBuffer[1]);
+ }
+
+ /* Determine required size of mean value buffer (_meanBufferLength) */
+ if (frameRate == 0) {
+ meanBufferLength = 1;
+ }
+ else {
+ meanBufferLength = (kNumFlickerBeforeDetect * frameRate) / kMinFrequencyToDetect;
+ }
+ /* Sanity check of buffer length */
+ if (meanBufferLength >= kMeanBufferLength)
+ {
+ /* Too long buffer. The flickering frequency is too close to zero, which
+ * makes the estimation unreliable.
+ */
+ _meanBufferLength = 0;
+ return 2;
+ }
+ _meanBufferLength = meanBufferLength;
+
+ if ((_timestampBuffer[_meanBufferLength - 1] != 0) && (_meanBufferLength != 1))
+ {
+ frameRate = ((90000 << 4) * (_meanBufferLength - 1));
+ frameRate /= (_timestampBuffer[0] - _timestampBuffer[_meanBufferLength - 1]);
+ }else if (_timestampBuffer[1] != 0)
+ {
+ frameRate = (90000 << 4) / (_timestampBuffer[0] - _timestampBuffer[1]);
+ }
+ _frameRate = frameRate;
+
+ return 0;
+}
+
+/**
+ This function detects flicker in the video stream. As a side effect the mean value
+ buffer is updated with the new mean value.
+
+ \return 0: No flickering detected\n
+ 1: Flickering detected\n
+ 2: Detection not possible due to unreliable frequency interval
+ -1: Error
+*/
+WebRtc_Word32 VPMDeflickering::DetectFlicker()
+{
+ /* Local variables */
+ WebRtc_UWord32 i;
+ WebRtc_Word32 freqEst; // (Q4) Frequency estimate to base detection upon
+ WebRtc_Word32 retVal = -1;
+
+ /* Sanity check for _meanBufferLength */
+ if (_meanBufferLength < 2)
+ {
+ /* Not possible to estimate frequency */
+ return(2);
+ }
+ /* Count zero crossings with a dead zone to be robust against noise.
+ * If the noise std is 2 pixel this corresponds to about 95% confidence interval.
+ */
+ WebRtc_Word32 deadzone = (kZeroCrossingDeadzone << kMeanValueScaling); // Q4
+ WebRtc_Word32 meanOfBuffer = 0; // Mean value of mean value buffer
+ WebRtc_Word32 numZeros = 0; // Number of zeros that cross the deadzone
+ WebRtc_Word32 cntState = 0; // State variable for zero crossing regions
+ WebRtc_Word32 cntStateOld = 0; // Previous state variable for zero crossing regions
+
+ for (i = 0; i < _meanBufferLength; i++)
+ {
+ meanOfBuffer += _meanBuffer[i];
+ }
+ meanOfBuffer += (_meanBufferLength >> 1); // Rounding, not truncation
+ meanOfBuffer /= _meanBufferLength;
+
+ /* Count zero crossings */
+ cntStateOld = (_meanBuffer[0] >= (meanOfBuffer + deadzone));
+ cntStateOld -= (_meanBuffer[0] <= (meanOfBuffer - deadzone));
+ for (i = 1; i < _meanBufferLength; i++)
+ {
+ cntState = (_meanBuffer[i] >= (meanOfBuffer + deadzone));
+ cntState -= (_meanBuffer[i] <= (meanOfBuffer - deadzone));
+ if (cntStateOld == 0)
+ {
+ cntStateOld = -cntState;
+ }
+ if (((cntState + cntStateOld) == 0) && (cntState != 0))
+ {
+ numZeros++;
+ cntStateOld = cntState;
+ }
+ }
+ /* END count zero crossings */
+
+ /* Frequency estimation according to:
+ * freqEst = numZeros * frameRate / 2 / _meanBufferLength;
+ *
+ * Resolution is set to Q4
+ */
+ freqEst = ((numZeros * 90000) << 3);
+ freqEst /= (_timestampBuffer[0] - _timestampBuffer[_meanBufferLength - 1]);
+
+ /* Translate frequency estimate to regions close to 100 and 120 Hz */
+ WebRtc_UWord8 freqState = 0; // Current translation state;
+ // (0) Not in interval,
+ // (1) Within valid interval,
+ // (2) Out of range
+ WebRtc_Word32 freqAlias = freqEst;
+ if (freqEst > kMinFrequencyToDetect)
+ {
+ WebRtc_UWord8 aliasState = 1;
+ while(freqState == 0)
+ {
+ /* Increase frequency */
+ freqAlias += (aliasState * _frameRate);
+ freqAlias += ((freqEst << 1) * (1 - (aliasState << 1)));
+ /* Compute state */
+ freqState = (abs(freqAlias - (100 << 4)) <= kFrequencyDeviation);
+ freqState += (abs(freqAlias - (120 << 4)) <= kFrequencyDeviation);
+ freqState += 2 * (freqAlias > ((120 << 4) + kFrequencyDeviation));
+ /* Switch alias state */
+ aliasState++;
+ aliasState &= 0x01;
+ }
+ }
+ /* Is frequency estimate within detection region? */
+ if (freqState == 1)
+ {
+ retVal = 1;
+ }else if (freqState == 0)
+ {
+ retVal = 2;
+ }else
+ {
+ retVal = 0;
+ }
+ return retVal;
+}
+
+} //namespace
diff --git a/modules/video_processing/main/source/deflickering.h b/modules/video_processing/main/source/deflickering.h
new file mode 100644
index 00000000..dfe7d9d1
--- /dev/null
+++ b/modules/video_processing/main/source/deflickering.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+/*
+ * deflickering.h
+ */
+
+#ifndef VPM_DEFLICKERING_H
+#define VPM_DEFLICKERING_H
+
+#include "typedefs.h"
+#include "video_processing.h"
+
+#include <cstring> // NULL
+
+namespace webrtc {
+
+class VPMDeflickering
+{
+public:
+ VPMDeflickering();
+ ~VPMDeflickering();
+
+ WebRtc_Word32 ChangeUniqueId(WebRtc_Word32 id);
+
+ void Reset();
+
+ WebRtc_Word32 ProcessFrame(VideoFrame* frame,
+ VideoProcessingModule::FrameStats* stats);
+private:
+ WebRtc_Word32 PreDetection(WebRtc_UWord32 timestamp,
+ const VideoProcessingModule::FrameStats& stats);
+
+ WebRtc_Word32 DetectFlicker();
+
+ enum { kMeanBufferLength = 32 };
+ enum { kFrameHistorySize = 15 };
+ enum { kNumProbs = 12 };
+ enum { kNumQuants = kNumProbs + 2 };
+ enum { kMaxOnlyLength = 5 };
+
+ WebRtc_Word32 _id;
+
+ WebRtc_UWord32 _meanBufferLength;
+ WebRtc_UWord8 _detectionState; // 0: No flickering
+ // 1: Flickering detected
+ // 2: In flickering
+ WebRtc_Word32 _meanBuffer[kMeanBufferLength];
+ WebRtc_UWord32 _timestampBuffer[kMeanBufferLength];
+ WebRtc_UWord32 _frameRate;
+ static const WebRtc_UWord16 _probUW16[kNumProbs];
+ static const WebRtc_UWord16 _weightUW16[kNumQuants - kMaxOnlyLength];
+ WebRtc_UWord8 _quantHistUW8[kFrameHistorySize][kNumQuants];
+};
+
+} //namespace
+
+#endif // VPM_DEFLICKERING_H
+
diff --git a/modules/video_processing/main/source/denoising.cc b/modules/video_processing/main/source/denoising.cc
new file mode 100644
index 00000000..33608a09
--- /dev/null
+++ b/modules/video_processing/main/source/denoising.cc
@@ -0,0 +1,186 @@
+/*
+ * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "denoising.h"
+#include "trace.h"
+
+#include <cstring>
+
+namespace webrtc {
+
+enum { kSubsamplingTime = 0 }; // Down-sampling in time (unit: number of frames)
+enum { kSubsamplingWidth = 0 }; // Sub-sampling in width (unit: power of 2)
+enum { kSubsamplingHeight = 0 }; // Sub-sampling in height (unit: power of 2)
+enum { kDenoiseFiltParam = 179 }; // (Q8) De-noising filter parameter
+enum { kDenoiseFiltParamRec = 77 }; // (Q8) 1 - filter parameter
+enum { kDenoiseThreshold = 19200 }; // (Q8) De-noising threshold level
+
+VPMDenoising::VPMDenoising() :
+ _id(0),
+ _moment1(NULL),
+ _moment2(NULL)
+{
+ Reset();
+}
+
+VPMDenoising::~VPMDenoising()
+{
+ if (_moment1)
+ {
+ delete [] _moment1;
+ _moment1 = NULL;
+ }
+
+ if (_moment2)
+ {
+ delete [] _moment2;
+ _moment2 = NULL;
+ }
+}
+
+WebRtc_Word32
+VPMDenoising::ChangeUniqueId(const WebRtc_Word32 id)
+{
+ _id = id;
+ return VPM_OK;
+}
+
+void
+VPMDenoising::Reset()
+{
+ _frameSize = 0;
+ _denoiseFrameCnt = 0;
+
+ if (_moment1)
+ {
+ delete [] _moment1;
+ _moment1 = NULL;
+ }
+
+ if (_moment2)
+ {
+ delete [] _moment2;
+ _moment2 = NULL;
+ }
+}
+
+WebRtc_Word32
+VPMDenoising::ProcessFrame(VideoFrame* frame)
+{
+ assert(frame);
+ WebRtc_Word32 thevar;
+ int k;
+ int jsub, ksub;
+ WebRtc_Word32 diff0;
+ WebRtc_UWord32 tmpMoment1;
+ WebRtc_UWord32 tmpMoment2;
+ WebRtc_UWord32 tmp;
+ WebRtc_Word32 numPixelsChanged = 0;
+
+ if (frame->Buffer() == NULL)
+ {
+ WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoPreocessing, _id,
+ "Null frame pointer");
+ return VPM_GENERAL_ERROR;
+ }
+
+ int width = frame->Width();
+ int height = frame->Height();
+ if (width == 0 || height == 0)
+ {
+ WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoPreocessing, _id,
+ "Invalid frame size");
+ return VPM_GENERAL_ERROR;
+ }
+
+ /* Size of luminance component */
+ const WebRtc_UWord32 ysize = height * width;
+
+ /* Initialization */
+ if (ysize != _frameSize)
+ {
+ delete [] _moment1;
+ _moment1 = NULL;
+
+ delete [] _moment2;
+ _moment2 = NULL;
+ }
+ _frameSize = ysize;
+
+ if (!_moment1)
+ {
+ _moment1 = new WebRtc_UWord32[ysize];
+ memset(_moment1, 0, sizeof(WebRtc_UWord32)*ysize);
+ }
+
+ if (!_moment2)
+ {
+ _moment2 = new WebRtc_UWord32[ysize];
+ memset(_moment2, 0, sizeof(WebRtc_UWord32)*ysize);
+ }
+
+ /* Apply de-noising on each pixel, but update variance sub-sampled */
+ uint8_t* buffer = frame->Buffer();
+ for (int i = 0; i < height; i++)
+ { // Collect over height
+ k = i * width;
+ ksub = ((i >> kSubsamplingHeight) << kSubsamplingHeight) * width;
+ for (int j = 0; j < width; j++)
+ { // Collect over width
+ jsub = ((j >> kSubsamplingWidth) << kSubsamplingWidth);
+ /* Update mean value for every pixel and every frame */
+ tmpMoment1 = _moment1[k + j];
+ tmpMoment1 *= kDenoiseFiltParam; // Q16
+ tmpMoment1 += ((kDenoiseFiltParamRec *
+ ((WebRtc_UWord32)buffer[k + j])) << 8);
+ tmpMoment1 >>= 8; // Q8
+ _moment1[k + j] = tmpMoment1;
+
+ tmpMoment2 = _moment2[ksub + jsub];
+ if ((ksub == k) && (jsub == j) && (_denoiseFrameCnt == 0))
+ {
+ tmp = ((WebRtc_UWord32)buffer[k + j] *
+ (WebRtc_UWord32)buffer[k + j]);
+ tmpMoment2 *= kDenoiseFiltParam; // Q16
+ tmpMoment2 += ((kDenoiseFiltParamRec * tmp)<<8);
+ tmpMoment2 >>= 8; // Q8
+ }
+ _moment2[k + j] = tmpMoment2;
+ /* Current event = deviation from mean value */
+ diff0 = ((WebRtc_Word32)buffer[k + j] << 8) - _moment1[k + j];
+ /* Recent events = variance (variations over time) */
+ thevar = _moment2[k + j];
+ thevar -= ((_moment1[k + j] * _moment1[k + j]) >> 8);
+ /***************************************************************************
+ * De-noising criteria, i.e., when should we replace a pixel by its mean
+ *
+ * 1) recent events are minor
+ * 2) current events are minor
+ ***************************************************************************/
+ if ((thevar < kDenoiseThreshold)
+ && ((diff0 * diff0 >> 8) < kDenoiseThreshold))
+ { // Replace with mean
+ buffer[k + j] = (WebRtc_UWord8)(_moment1[k + j] >> 8);
+ numPixelsChanged++;
+ }
+ }
+ }
+
+ /* Update frame counter */
+ _denoiseFrameCnt++;
+ if (_denoiseFrameCnt > kSubsamplingTime)
+ {
+ _denoiseFrameCnt = 0;
+ }
+
+ return numPixelsChanged;
+}
+
+} //namespace
diff --git a/modules/video_processing/main/source/denoising.h b/modules/video_processing/main/source/denoising.h
new file mode 100644
index 00000000..eed772f5
--- /dev/null
+++ b/modules/video_processing/main/source/denoising.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+/*
+ * denoising.h
+ */
+#ifndef VPM_DENOISING_H
+#define VPM_DENOISING_H
+
+#include "typedefs.h"
+#include "video_processing.h"
+
+namespace webrtc {
+
+class VPMDenoising
+{
+public:
+ VPMDenoising();
+ ~VPMDenoising();
+
+ WebRtc_Word32 ChangeUniqueId(WebRtc_Word32 id);
+
+ void Reset();
+
+ WebRtc_Word32 ProcessFrame(VideoFrame* frame);
+
+private:
+ WebRtc_Word32 _id;
+
+ WebRtc_UWord32* _moment1; // (Q8) First order moment (mean)
+ WebRtc_UWord32* _moment2; // (Q8) Second order moment
+ WebRtc_UWord32 _frameSize; // Size (# of pixels) of frame
+ int _denoiseFrameCnt; // Counter for subsampling in time
+};
+
+} //namespace
+
+#endif // VPM_DENOISING_H
+
diff --git a/modules/video_processing/main/source/frame_preprocessor.cc b/modules/video_processing/main/source/frame_preprocessor.cc
new file mode 100644
index 00000000..d9609f93
--- /dev/null
+++ b/modules/video_processing/main/source/frame_preprocessor.cc
@@ -0,0 +1,192 @@
+/*
+ * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "frame_preprocessor.h"
+#include "trace.h"
+
+namespace webrtc {
+
+VPMFramePreprocessor::VPMFramePreprocessor():
+_id(0),
+_contentMetrics(NULL),
+_maxFrameRate(0),
+_resampledFrame(),
+_enableCA(false),
+_frameCnt(0)
+{
+ _spatialResampler = new VPMSimpleSpatialResampler();
+ _ca = new VPMContentAnalysis(true);
+ _vd = new VPMVideoDecimator();
+}
+
+VPMFramePreprocessor::~VPMFramePreprocessor()
+{
+ Reset();
+ delete _spatialResampler;
+ delete _ca;
+ delete _vd;
+ _resampledFrame.Free(); // is this needed?
+}
+
+WebRtc_Word32
+VPMFramePreprocessor::ChangeUniqueId(const WebRtc_Word32 id)
+{
+ _id = id;
+ return VPM_OK;
+}
+
+void
+VPMFramePreprocessor::Reset()
+{
+ _ca->Release();
+ _vd->Reset();
+ _contentMetrics = NULL;
+ _spatialResampler->Reset();
+ _enableCA = false;
+ _frameCnt = 0;
+}
+
+
+void
+VPMFramePreprocessor::EnableTemporalDecimation(bool enable)
+{
+ _vd->EnableTemporalDecimation(enable);
+}
+void
+VPMFramePreprocessor::EnableContentAnalysis(bool enable)
+{
+ _enableCA = enable;
+}
+
+void
+VPMFramePreprocessor::SetInputFrameResampleMode(VideoFrameResampling resamplingMode)
+{
+ _spatialResampler->SetInputFrameResampleMode(resamplingMode);
+}
+
+
+WebRtc_Word32
+VPMFramePreprocessor::SetMaxFrameRate(WebRtc_UWord32 maxFrameRate)
+{
+ if (maxFrameRate == 0)
+ {
+ return VPM_PARAMETER_ERROR;
+ }
+ //Max allowed frame rate
+ _maxFrameRate = maxFrameRate;
+
+ return _vd->SetMaxFrameRate(maxFrameRate);
+}
+
+
+WebRtc_Word32
+VPMFramePreprocessor::SetTargetResolution(WebRtc_UWord32 width, WebRtc_UWord32 height, WebRtc_UWord32 frameRate)
+{
+ if ( (width == 0) || (height == 0) || (frameRate == 0))
+ {
+ return VPM_PARAMETER_ERROR;
+ }
+ WebRtc_Word32 retVal = 0;
+ retVal = _spatialResampler->SetTargetFrameSize(width, height);
+ if (retVal < 0)
+ {
+ return retVal;
+ }
+ retVal = _vd->SetTargetFrameRate(frameRate);
+ if (retVal < 0)
+ {
+ return retVal;
+ }
+
+ return VPM_OK;
+}
+
+void
+VPMFramePreprocessor::UpdateIncomingFrameRate()
+{
+ _vd->UpdateIncomingFrameRate();
+}
+
+WebRtc_UWord32
+VPMFramePreprocessor::DecimatedFrameRate()
+{
+ return _vd->DecimatedFrameRate();
+}
+
+
+WebRtc_UWord32
+VPMFramePreprocessor::DecimatedWidth() const
+{
+ return _spatialResampler->TargetWidth();
+}
+
+
+WebRtc_UWord32
+VPMFramePreprocessor::DecimatedHeight() const
+{
+ return _spatialResampler->TargetHeight();
+}
+
+
+WebRtc_Word32
+VPMFramePreprocessor::PreprocessFrame(const VideoFrame& frame,
+ VideoFrame** processedFrame)
+{
+ if (frame.Buffer() == NULL || frame.Height() == 0 || frame.Width() == 0)
+ {
+ return VPM_PARAMETER_ERROR;
+ }
+
+ _vd->UpdateIncomingFrameRate();
+
+ if (_vd->DropFrame())
+ {
+ WEBRTC_TRACE(webrtc::kTraceStream, webrtc::kTraceVideo, _id,
+ "Drop frame due to frame rate");
+ return 1; // drop 1 frame
+ }
+
+ // Resizing incoming frame if needed.
+ // Note that we must make a copy of it.
+ // We are not allowed to resample the input frame.
+ *processedFrame = NULL;
+ if (_spatialResampler->ApplyResample(frame.Width(), frame.Height())) {
+ WebRtc_Word32 ret = _spatialResampler->ResampleFrame(frame,
+ _resampledFrame);
+ if (ret != VPM_OK)
+ return ret;
+ *processedFrame = &_resampledFrame;
+ }
+
+ // Perform content analysis on the frame to be encoded.
+ if (_enableCA)
+ {
+ // Compute new metrics every |kSkipFramesCA| frames, starting with
+ // the first frame.
+ if (_frameCnt % kSkipFrameCA == 0) {
+ if (*processedFrame == NULL) {
+ _contentMetrics = _ca->ComputeContentMetrics(frame);
+ } else {
+ _contentMetrics = _ca->ComputeContentMetrics(_resampledFrame);
+ }
+ }
+ ++_frameCnt;
+ }
+ return VPM_OK;
+}
+
+
+VideoContentMetrics*
+VPMFramePreprocessor::ContentMetrics() const
+{
+ return _contentMetrics;
+}
+
+} //namespace
diff --git a/modules/video_processing/main/source/frame_preprocessor.h b/modules/video_processing/main/source/frame_preprocessor.h
new file mode 100644
index 00000000..f85d5c0c
--- /dev/null
+++ b/modules/video_processing/main/source/frame_preprocessor.h
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+/*
+ * frame_preprocessor.h
+ */
+#ifndef VPM_FRAME_PREPROCESSOR_H
+#define VPM_FRAME_PREPROCESSOR_H
+
+#include "typedefs.h"
+#include "video_processing.h"
+#include "content_analysis.h"
+#include "spatial_resampler.h"
+#include "video_decimator.h"
+
+namespace webrtc {
+
+
+class VPMFramePreprocessor
+{
+public:
+
+ VPMFramePreprocessor();
+ ~VPMFramePreprocessor();
+
+ WebRtc_Word32 ChangeUniqueId(const WebRtc_Word32 id);
+
+ void Reset();
+
+ // Enable temporal decimation
+ void EnableTemporalDecimation(bool enable);
+
+ void SetInputFrameResampleMode(VideoFrameResampling resamplingMode);
+
+ //Enable content analysis
+ void EnableContentAnalysis(bool enable);
+
+ //Set max frame rate
+ WebRtc_Word32 SetMaxFrameRate(WebRtc_UWord32 maxFrameRate);
+
+ //Set target resolution: frame rate and dimension
+ WebRtc_Word32 SetTargetResolution(WebRtc_UWord32 width,
+ WebRtc_UWord32 height,
+ WebRtc_UWord32 frameRate);
+
+ //Update incoming frame rate/dimension
+ void UpdateIncomingFrameRate();
+
+ WebRtc_Word32 updateIncomingFrameSize(WebRtc_UWord32 width,
+ WebRtc_UWord32 height);
+
+ //Set decimated values: frame rate/dimension
+ WebRtc_UWord32 DecimatedFrameRate();
+ WebRtc_UWord32 DecimatedWidth() const;
+ WebRtc_UWord32 DecimatedHeight() const;
+
+ //Preprocess output:
+ WebRtc_Word32 PreprocessFrame(const VideoFrame& frame,
+ VideoFrame** processedFrame);
+ VideoContentMetrics* ContentMetrics() const;
+
+private:
+ // The content does not change so much every frame, so to reduce complexity
+ // we can compute new content metrics every |kSkipFrameCA| frames.
+ enum { kSkipFrameCA = 2 };
+
+ WebRtc_Word32 _id;
+ VideoContentMetrics* _contentMetrics;
+ WebRtc_UWord32 _maxFrameRate;
+ VideoFrame _resampledFrame;
+ VPMSpatialResampler* _spatialResampler;
+ VPMContentAnalysis* _ca;
+ VPMVideoDecimator* _vd;
+ bool _enableCA;
+ int _frameCnt;
+
+}; // end of VPMFramePreprocessor class definition
+
+} //namespace
+
+#endif // VPM_FRAME_PREPROCESS_H
diff --git a/modules/video_processing/main/source/spatial_resampler.cc b/modules/video_processing/main/source/spatial_resampler.cc
new file mode 100644
index 00000000..0d7c2e59
--- /dev/null
+++ b/modules/video_processing/main/source/spatial_resampler.cc
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "spatial_resampler.h"
+
+
+namespace webrtc {
+
+VPMSimpleSpatialResampler::VPMSimpleSpatialResampler()
+:
+_resamplingMode(kFastRescaling),
+_targetWidth(0),
+_targetHeight(0),
+_scaler()
+{
+}
+
+VPMSimpleSpatialResampler::~VPMSimpleSpatialResampler()
+{
+ //
+}
+
+
+WebRtc_Word32
+VPMSimpleSpatialResampler::SetTargetFrameSize(WebRtc_Word32 width,
+ WebRtc_Word32 height)
+{
+ if (_resamplingMode == kNoRescaling) {
+ return VPM_OK;
+ }
+
+ if (width < 1 || height < 1) {
+ return VPM_PARAMETER_ERROR;
+ }
+
+ _targetWidth = width;
+ _targetHeight = height;
+
+ return VPM_OK;
+}
+
+void
+VPMSimpleSpatialResampler::SetInputFrameResampleMode(VideoFrameResampling
+ resamplingMode)
+{
+ _resamplingMode = resamplingMode;
+}
+
+void
+VPMSimpleSpatialResampler::Reset()
+{
+ _resamplingMode = kFastRescaling;
+ _targetWidth = 0;
+ _targetHeight = 0;
+}
+
+WebRtc_Word32
+VPMSimpleSpatialResampler::ResampleFrame(const VideoFrame& inFrame,
+ VideoFrame& outFrame)
+{
+ if (_resamplingMode == kNoRescaling)
+ return outFrame.CopyFrame(inFrame);
+ // Check if re-sampling is needed
+ if ((inFrame.Width() == (WebRtc_UWord32)_targetWidth) &&
+ (inFrame.Height() == (WebRtc_UWord32)_targetHeight)) {
+ return outFrame.CopyFrame(inFrame);
+ }
+
+ // Setting scaler
+ // TODO(mikhal/marpan): Should we allow for setting the filter mode in
+ // _scale.Set() with |_resamplingMode|?
+ int retVal = 0;
+ retVal = _scaler.Set(inFrame.Width(), inFrame.Height(),
+ _targetWidth, _targetHeight, kI420, kI420, kScaleBox);
+ if (retVal < 0)
+ return retVal;
+
+ // Setting time parameters to the output frame - all the rest will be
+ // set by the scaler.
+ outFrame.SetTimeStamp(inFrame.TimeStamp());
+ outFrame.SetRenderTime(inFrame.RenderTimeMs());
+
+ retVal = _scaler.Scale(inFrame, &outFrame);
+ if (retVal == 0)
+ return VPM_OK;
+ else
+ return VPM_SCALE_ERROR;
+}
+
+WebRtc_Word32
+VPMSimpleSpatialResampler::TargetHeight()
+{
+ return _targetHeight;
+}
+
+WebRtc_Word32
+VPMSimpleSpatialResampler::TargetWidth()
+{
+ return _targetWidth;
+}
+
+bool
+VPMSimpleSpatialResampler::ApplyResample(WebRtc_Word32 width,
+ WebRtc_Word32 height)
+{
+ if ((width == _targetWidth && height == _targetHeight) ||
+ _resamplingMode == kNoRescaling)
+ return false;
+ else
+ return true;
+}
+
+} //namespace
diff --git a/modules/video_processing/main/source/spatial_resampler.h b/modules/video_processing/main/source/spatial_resampler.h
new file mode 100644
index 00000000..28a5a6c8
--- /dev/null
+++ b/modules/video_processing/main/source/spatial_resampler.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+/*
+ * spatial_resampler.h
+ */
+
+#ifndef VPM_SPATIAL_RESAMPLER_H
+#define VPM_SPATIAL_RESAMPLER_H
+
+#include "typedefs.h"
+
+#include "module_common_types.h"
+#include "video_processing_defines.h"
+
+#include "common_video/libyuv/include/webrtc_libyuv.h"
+#include "common_video/libyuv/include/scaler.h"
+
+namespace webrtc {
+
+class VPMSpatialResampler
+{
+public:
+ virtual ~VPMSpatialResampler() {};
+ virtual WebRtc_Word32 SetTargetFrameSize(WebRtc_Word32 width,
+ WebRtc_Word32 height) = 0;
+ virtual void SetInputFrameResampleMode(VideoFrameResampling
+ resamplingMode) = 0;
+ virtual void Reset() = 0;
+ virtual WebRtc_Word32 ResampleFrame(const VideoFrame& inFrame,
+ VideoFrame& outFrame) = 0;
+ virtual WebRtc_Word32 TargetWidth() = 0;
+ virtual WebRtc_Word32 TargetHeight() = 0;
+ virtual bool ApplyResample(WebRtc_Word32 width, WebRtc_Word32 height) = 0;
+};
+
+class VPMSimpleSpatialResampler : public VPMSpatialResampler
+{
+public:
+ VPMSimpleSpatialResampler();
+ ~VPMSimpleSpatialResampler();
+ virtual WebRtc_Word32 SetTargetFrameSize(WebRtc_Word32 width,
+ WebRtc_Word32 height);
+ virtual void SetInputFrameResampleMode(VideoFrameResampling resamplingMode);
+ virtual void Reset();
+ virtual WebRtc_Word32 ResampleFrame(const VideoFrame& inFrame,
+ VideoFrame& outFrame);
+ virtual WebRtc_Word32 TargetWidth();
+ virtual WebRtc_Word32 TargetHeight();
+ virtual bool ApplyResample(WebRtc_Word32 width, WebRtc_Word32 height);
+
+private:
+
+ VideoFrameResampling _resamplingMode;
+ WebRtc_Word32 _targetWidth;
+ WebRtc_Word32 _targetHeight;
+ Scaler _scaler;
+};
+
+} //namespace
+
+#endif
diff --git a/modules/video_processing/main/source/video_decimator.cc b/modules/video_processing/main/source/video_decimator.cc
new file mode 100644
index 00000000..43bda088
--- /dev/null
+++ b/modules/video_processing/main/source/video_decimator.cc
@@ -0,0 +1,235 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "video_decimator.h"
+#include "tick_util.h"
+#include "video_processing.h"
+
+#define VD_MIN(a, b) ((a) < (b)) ? (a) : (b)
+
+namespace webrtc {
+
+VPMVideoDecimator::VPMVideoDecimator()
+:
+_overShootModifier(0),
+_dropCount(0),
+_keepCount(0),
+_targetFrameRate(30),
+_incomingFrameRate(0.0f),
+_maxFrameRate(30),
+_incomingFrameTimes(),
+_enableTemporalDecimation(true)
+{
+ Reset();
+}
+
+VPMVideoDecimator::~VPMVideoDecimator()
+{
+ //
+}
+
+void
+VPMVideoDecimator::Reset()
+{
+ _overShootModifier = 0;
+ _dropCount = 0;
+ _keepCount = 0;
+ _targetFrameRate = 30;
+ _incomingFrameRate = 0.0f;
+ _maxFrameRate = 30;
+ memset(_incomingFrameTimes, 0, sizeof(_incomingFrameTimes));
+ _enableTemporalDecimation = true;
+}
+
+void
+VPMVideoDecimator::EnableTemporalDecimation(bool enable)
+{
+ _enableTemporalDecimation = enable;
+}
+WebRtc_Word32
+VPMVideoDecimator::SetMaxFrameRate(WebRtc_UWord32 maxFrameRate)
+{
+ if (maxFrameRate == 0)
+ {
+ return VPM_PARAMETER_ERROR;
+ }
+
+ _maxFrameRate = maxFrameRate;
+
+ if (_targetFrameRate > _maxFrameRate)
+ {
+ _targetFrameRate = _maxFrameRate;
+
+ }
+ return VPM_OK;
+}
+
+WebRtc_Word32
+VPMVideoDecimator::SetTargetFrameRate(WebRtc_UWord32 frameRate)
+{
+ if (frameRate == 0)
+ {
+ return VPM_PARAMETER_ERROR;
+ }
+ if (frameRate > _maxFrameRate)
+ {
+ //override
+ _targetFrameRate = _maxFrameRate;
+ }
+ else
+ {
+ _targetFrameRate = frameRate;
+ }
+ return VPM_OK;
+}
+
+bool
+VPMVideoDecimator::DropFrame()
+{
+ if (!_enableTemporalDecimation)
+ {
+ return false;
+ }
+
+ if (_incomingFrameRate <= 0)
+ {
+ return false;
+ }
+
+ const WebRtc_UWord32 incomingFrameRate = static_cast<WebRtc_UWord32>(_incomingFrameRate + 0.5f);
+
+ if (_targetFrameRate == 0)
+ {
+ return true;
+ }
+
+ bool drop = false;
+ if (incomingFrameRate > _targetFrameRate)
+ {
+ WebRtc_Word32 overshoot = _overShootModifier + (incomingFrameRate - _targetFrameRate);
+ if(overshoot < 0)
+ {
+ overshoot = 0;
+ _overShootModifier = 0;
+ }
+
+ if (overshoot && 2 * overshoot < (WebRtc_Word32) incomingFrameRate)
+ {
+
+ if (_dropCount) // Just got here so drop to be sure.
+ {
+ _dropCount = 0;
+ return true;
+ }
+ const WebRtc_UWord32 dropVar = incomingFrameRate / overshoot;
+
+ if (_keepCount >= dropVar)
+ {
+ drop = true;
+ _overShootModifier = -((WebRtc_Word32) incomingFrameRate % overshoot) / 3;
+ _keepCount = 1;
+ }
+ else
+ {
+
+ _keepCount++;
+ }
+ }
+ else
+ {
+ _keepCount = 0;
+ const WebRtc_UWord32 dropVar = overshoot / _targetFrameRate;
+ if (_dropCount < dropVar)
+ {
+ drop = true;
+ _dropCount++;
+ }
+ else
+ {
+ _overShootModifier = overshoot % _targetFrameRate;
+ drop = false;
+ _dropCount = 0;
+ }
+ }
+ }
+
+ return drop;
+}
+
+
+WebRtc_UWord32
+VPMVideoDecimator::DecimatedFrameRate()
+{
+ ProcessIncomingFrameRate(TickTime::MillisecondTimestamp());
+ if (!_enableTemporalDecimation)
+ {
+ return static_cast<WebRtc_UWord32>(_incomingFrameRate + 0.5f);
+ }
+ return VD_MIN(_targetFrameRate, static_cast<WebRtc_UWord32>(_incomingFrameRate + 0.5f));
+}
+
+WebRtc_UWord32
+VPMVideoDecimator::InputFrameRate()
+{
+ ProcessIncomingFrameRate(TickTime::MillisecondTimestamp());
+ return static_cast<WebRtc_UWord32>(_incomingFrameRate + 0.5f);
+}
+
+void
+VPMVideoDecimator::UpdateIncomingFrameRate()
+{
+ WebRtc_Word64 now = TickTime::MillisecondTimestamp();
+ if(_incomingFrameTimes[0] == 0)
+ {
+ // first no shift
+ } else
+ {
+ // shift
+ for(int i = (kFrameCountHistorySize - 2); i >= 0 ; i--)
+ {
+ _incomingFrameTimes[i+1] = _incomingFrameTimes[i];
+ }
+ }
+ _incomingFrameTimes[0] = now;
+ ProcessIncomingFrameRate(now);
+}
+
+void
+VPMVideoDecimator::ProcessIncomingFrameRate(WebRtc_Word64 now)
+{
+ WebRtc_Word32 num = 0;
+ WebRtc_Word32 nrOfFrames = 0;
+ for(num = 1; num < (kFrameCountHistorySize - 1); num++)
+ {
+ if (_incomingFrameTimes[num] <= 0 ||
+ now - _incomingFrameTimes[num] > kFrameHistoryWindowMs) // don't use data older than 2sec
+ {
+ break;
+ } else
+ {
+ nrOfFrames++;
+ }
+ }
+ if (num > 1)
+ {
+ WebRtc_Word64 diff = now - _incomingFrameTimes[num-1];
+ _incomingFrameRate = 1.0;
+ if(diff >0)
+ {
+ _incomingFrameRate = nrOfFrames * 1000.0f / static_cast<float>(diff);
+ }
+ }
+ else
+ {
+ _incomingFrameRate = static_cast<float>(nrOfFrames);
+ }
+}
+
+} //namespace
diff --git a/modules/video_processing/main/source/video_decimator.h b/modules/video_processing/main/source/video_decimator.h
new file mode 100644
index 00000000..e152bb98
--- /dev/null
+++ b/modules/video_processing/main/source/video_decimator.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+/*
+ * video_decimator.h
+ */
+#ifndef VPM_VIDEO_DECIMATOR_H
+#define VPM_VIDEO_DECIMATOR_H
+
+#include "typedefs.h"
+#include "module_common_types.h"
+
+namespace webrtc {
+
+class VPMVideoDecimator
+{
+public:
+ VPMVideoDecimator();
+ ~VPMVideoDecimator();
+
+ void Reset();
+
+ void EnableTemporalDecimation(bool enable);
+
+ WebRtc_Word32 SetMaxFrameRate(WebRtc_UWord32 maxFrameRate);
+ WebRtc_Word32 SetTargetFrameRate(WebRtc_UWord32 frameRate);
+
+ bool DropFrame();
+
+ void UpdateIncomingFrameRate();
+
+ // Get Decimated Frame Rate/Dimensions
+ WebRtc_UWord32 DecimatedFrameRate();
+
+ //Get input frame rate
+ WebRtc_UWord32 InputFrameRate();
+
+private:
+ void ProcessIncomingFrameRate(WebRtc_Word64 now);
+
+ enum { kFrameCountHistorySize = 90};
+ enum { kFrameHistoryWindowMs = 2000};
+
+ // Temporal decimation
+ WebRtc_Word32 _overShootModifier;
+ WebRtc_UWord32 _dropCount;
+ WebRtc_UWord32 _keepCount;
+ WebRtc_UWord32 _targetFrameRate;
+ float _incomingFrameRate;
+ WebRtc_UWord32 _maxFrameRate;
+ WebRtc_Word64 _incomingFrameTimes[kFrameCountHistorySize];
+ bool _enableTemporalDecimation;
+
+};
+
+} //namespace
+
+#endif
diff --git a/modules/video_processing/main/source/video_processing.gypi b/modules/video_processing/main/source/video_processing.gypi
new file mode 100644
index 00000000..8d70a797
--- /dev/null
+++ b/modules/video_processing/main/source/video_processing.gypi
@@ -0,0 +1,88 @@
+# Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS. All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+
+{
+ 'targets': [
+ {
+ 'target_name': 'video_processing',
+ 'type': '<(library)',
+ 'dependencies': [
+ 'webrtc_utility',
+ '<(webrtc_root)/common_audio/common_audio.gyp:signal_processing',
+ '<(webrtc_root)/common_video/common_video.gyp:common_video',
+ '<(webrtc_root)/system_wrappers/source/system_wrappers.gyp:system_wrappers',
+ ],
+ 'include_dirs': [
+ '../interface',
+ ],
+ 'direct_dependent_settings': {
+ 'include_dirs': [
+ '../interface',
+ ],
+ },
+ 'sources': [
+ '../interface/video_processing.h',
+ '../interface/video_processing_defines.h',
+ 'brighten.cc',
+ 'brighten.h',
+ 'brightness_detection.cc',
+ 'brightness_detection.h',
+ 'color_enhancement.cc',
+ 'color_enhancement.h',
+ 'color_enhancement_private.h',
+ 'content_analysis.cc',
+ 'content_analysis.h',
+ 'deflickering.cc',
+ 'deflickering.h',
+ 'denoising.cc',
+ 'denoising.h',
+ 'frame_preprocessor.cc',
+ 'frame_preprocessor.h',
+ 'spatial_resampler.cc',
+ 'spatial_resampler.h',
+ 'video_decimator.cc',
+ 'video_decimator.h',
+ 'video_processing_impl.cc',
+ 'video_processing_impl.h',
+ ],
+ 'conditions': [
+ ['target_arch=="ia32" or target_arch=="x64"', {
+ 'dependencies': [ 'video_processing_sse2', ],
+ }],
+ ],
+ },
+ ],
+ 'conditions': [
+ ['target_arch=="ia32" or target_arch=="x64"', {
+ 'targets': [
+ {
+ 'target_name': 'video_processing_sse2',
+ 'type': '<(library)',
+ 'sources': [
+ 'content_analysis_sse2.cc',
+ ],
+ 'include_dirs': [
+ '../interface',
+ '../../../interface',
+ ],
+ 'conditions': [
+ ['os_posix==1 and OS!="mac"', {
+ 'cflags': [ '-msse2', ],
+ }],
+ ['OS=="mac"', {
+ 'xcode_settings': {
+ 'OTHER_CFLAGS': [ '-msse2', ],
+ },
+ }],
+ ],
+ },
+ ],
+ }],
+ ],
+}
+
diff --git a/modules/video_processing/main/source/video_processing_impl.cc b/modules/video_processing/main/source/video_processing_impl.cc
new file mode 100644
index 00000000..346f6556
--- /dev/null
+++ b/modules/video_processing/main/source/video_processing_impl.cc
@@ -0,0 +1,298 @@
+/*
+ * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "video_processing_impl.h"
+#include "critical_section_wrapper.h"
+#include "trace.h"
+
+#include <cassert>
+
+namespace webrtc {
+
+namespace
+{
+ void
+ SetSubSampling(VideoProcessingModule::FrameStats* stats,
+ const WebRtc_Word32 width,
+ const WebRtc_Word32 height)
+ {
+ if (width * height >= 640 * 480)
+ {
+ stats->subSamplWidth = 3;
+ stats->subSamplHeight = 3;
+ }
+ else if (width * height >= 352 * 288)
+ {
+ stats->subSamplWidth = 2;
+ stats->subSamplHeight = 2;
+ }
+ else if (width * height >= 176 * 144)
+ {
+ stats->subSamplWidth = 1;
+ stats->subSamplHeight = 1;
+ }
+ else
+ {
+ stats->subSamplWidth = 0;
+ stats->subSamplHeight = 0;
+ }
+ }
+}
+
+VideoProcessingModule*
+VideoProcessingModule::Create(const WebRtc_Word32 id)
+{
+
+ return new VideoProcessingModuleImpl(id);
+}
+
+void
+VideoProcessingModule::Destroy(VideoProcessingModule* module)
+{
+ if (module)
+ {
+ delete static_cast<VideoProcessingModuleImpl*>(module);
+ }
+}
+
+WebRtc_Word32
+VideoProcessingModuleImpl::ChangeUniqueId(const WebRtc_Word32 id)
+{
+ CriticalSectionScoped mutex(&_mutex);
+ _id = id;
+ _brightnessDetection.ChangeUniqueId(id);
+ _deflickering.ChangeUniqueId(id);
+ _denoising.ChangeUniqueId(id);
+ _framePreProcessor.ChangeUniqueId(id);
+ return VPM_OK;
+}
+
+WebRtc_Word32
+VideoProcessingModuleImpl::Id() const
+{
+ CriticalSectionScoped mutex(&_mutex);
+ return _id;
+}
+
+VideoProcessingModuleImpl::VideoProcessingModuleImpl(const WebRtc_Word32 id) :
+ _id(id),
+ _mutex(*CriticalSectionWrapper::CreateCriticalSection())
+{
+ _brightnessDetection.ChangeUniqueId(id);
+ _deflickering.ChangeUniqueId(id);
+ _denoising.ChangeUniqueId(id);
+ _framePreProcessor.ChangeUniqueId(id);
+ WEBRTC_TRACE(webrtc::kTraceMemory, webrtc::kTraceVideoPreocessing, _id,
+ "Created");
+}
+
+
+VideoProcessingModuleImpl::~VideoProcessingModuleImpl()
+{
+ WEBRTC_TRACE(webrtc::kTraceMemory, webrtc::kTraceVideoPreocessing, _id,
+ "Destroyed");
+
+ delete &_mutex;
+}
+
+void
+VideoProcessingModuleImpl::Reset()
+{
+ CriticalSectionScoped mutex(&_mutex);
+ _deflickering.Reset();
+ _denoising.Reset();
+ _brightnessDetection.Reset();
+ _framePreProcessor.Reset();
+
+}
+
+WebRtc_Word32
+VideoProcessingModule::GetFrameStats(FrameStats* stats,
+ const VideoFrame& frame)
+{
+ if (frame.Buffer() == NULL)
+ {
+ WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoPreocessing, -1,
+ "Null frame pointer");
+ return VPM_PARAMETER_ERROR;
+ }
+
+ int width = frame.Width();
+ int height = frame.Height();
+
+ if (width == 0 || height == 0)
+ {
+ WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceVideoPreocessing, -1,
+ "Invalid frame size");
+ return VPM_PARAMETER_ERROR;
+ }
+
+ ClearFrameStats(stats); // The histogram needs to be zeroed out.
+ SetSubSampling(stats, width, height);
+
+ uint8_t* buffer = frame.Buffer();
+ // Compute histogram and sum of frame
+ for (int i = 0; i < height; i += (1 << stats->subSamplHeight))
+ {
+ int k = i * width;
+ for (int j = 0; j < width; j += (1 << stats->subSamplWidth))
+ {
+ stats->hist[buffer[k + j]]++;
+ stats->sum += buffer[k + j];
+ }
+ }
+
+ stats->numPixels = (width * height) / ((1 << stats->subSamplWidth) *
+ (1 << stats->subSamplHeight));
+ assert(stats->numPixels > 0);
+
+ // Compute mean value of frame
+ stats->mean = stats->sum / stats->numPixels;
+
+ return VPM_OK;
+}
+
+bool
+VideoProcessingModule::ValidFrameStats(const FrameStats& stats)
+{
+ if (stats.numPixels == 0)
+ {
+ return false;
+ }
+
+ return true;
+}
+
+void
+VideoProcessingModule::ClearFrameStats(FrameStats* stats)
+{
+ stats->mean = 0;
+ stats->sum = 0;
+ stats->numPixels = 0;
+ stats->subSamplWidth = 0;
+ stats->subSamplHeight = 0;
+ memset(stats->hist, 0, sizeof(stats->hist));
+}
+
+WebRtc_Word32
+VideoProcessingModule::ColorEnhancement(VideoFrame* frame)
+{
+ return VideoProcessing::ColorEnhancement(frame);
+}
+
+WebRtc_Word32
+VideoProcessingModule::Brighten(VideoFrame* frame, int delta)
+{
+ return VideoProcessing::Brighten(frame, delta);
+}
+
+WebRtc_Word32
+VideoProcessingModuleImpl::Deflickering(VideoFrame* frame, FrameStats* stats)
+{
+ CriticalSectionScoped mutex(&_mutex);
+ return _deflickering.ProcessFrame(frame, stats);
+}
+
+WebRtc_Word32
+VideoProcessingModuleImpl::Denoising(VideoFrame* frame)
+{
+ CriticalSectionScoped mutex(&_mutex);
+ return _denoising.ProcessFrame(frame);
+}
+
+WebRtc_Word32
+VideoProcessingModuleImpl::BrightnessDetection(const VideoFrame& frame,
+ const FrameStats& stats)
+{
+ CriticalSectionScoped mutex(&_mutex);
+ return _brightnessDetection.ProcessFrame(frame, stats);
+}
+
+
+void
+VideoProcessingModuleImpl::EnableTemporalDecimation(bool enable)
+{
+ CriticalSectionScoped mutex(&_mutex);
+ _framePreProcessor.EnableTemporalDecimation(enable);
+}
+
+
+void
+VideoProcessingModuleImpl::SetInputFrameResampleMode(VideoFrameResampling
+ resamplingMode)
+{
+ CriticalSectionScoped cs(&_mutex);
+ _framePreProcessor.SetInputFrameResampleMode(resamplingMode);
+}
+
+WebRtc_Word32
+VideoProcessingModuleImpl::SetMaxFrameRate(WebRtc_UWord32 maxFrameRate)
+{
+ CriticalSectionScoped cs(&_mutex);
+ return _framePreProcessor.SetMaxFrameRate(maxFrameRate);
+
+}
+
+WebRtc_Word32
+VideoProcessingModuleImpl::SetTargetResolution(WebRtc_UWord32 width,
+ WebRtc_UWord32 height,
+ WebRtc_UWord32 frameRate)
+{
+ CriticalSectionScoped cs(&_mutex);
+ return _framePreProcessor.SetTargetResolution(width, height, frameRate);
+}
+
+
+WebRtc_UWord32
+VideoProcessingModuleImpl::DecimatedFrameRate()
+{
+ CriticalSectionScoped cs(&_mutex);
+ return _framePreProcessor.DecimatedFrameRate();
+}
+
+
+WebRtc_UWord32
+VideoProcessingModuleImpl::DecimatedWidth() const
+{
+ CriticalSectionScoped cs(&_mutex);
+ return _framePreProcessor.DecimatedWidth();
+}
+
+WebRtc_UWord32
+VideoProcessingModuleImpl::DecimatedHeight() const
+{
+ CriticalSectionScoped cs(&_mutex);
+ return _framePreProcessor.DecimatedHeight();
+}
+
+WebRtc_Word32
+VideoProcessingModuleImpl::PreprocessFrame(const VideoFrame& frame,
+ VideoFrame **processedFrame)
+{
+ CriticalSectionScoped mutex(&_mutex);
+ return _framePreProcessor.PreprocessFrame(frame, processedFrame);
+}
+
+VideoContentMetrics*
+VideoProcessingModuleImpl::ContentMetrics() const
+{
+ CriticalSectionScoped mutex(&_mutex);
+ return _framePreProcessor.ContentMetrics();
+}
+
+
+void
+VideoProcessingModuleImpl::EnableContentAnalysis(bool enable)
+{
+ CriticalSectionScoped mutex(&_mutex);
+ _framePreProcessor.EnableContentAnalysis(enable);
+}
+
+} //namespace
diff --git a/modules/video_processing/main/source/video_processing_impl.h b/modules/video_processing/main/source/video_processing_impl.h
new file mode 100644
index 00000000..43c4318a
--- /dev/null
+++ b/modules/video_processing/main/source/video_processing_impl.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_MODULE_VIDEO_PROCESSING_IMPL_H
+#define WEBRTC_MODULE_VIDEO_PROCESSING_IMPL_H
+
+#include "video_processing.h"
+#include "brighten.h"
+#include "brightness_detection.h"
+#include "color_enhancement.h"
+#include "deflickering.h"
+#include "denoising.h"
+#include "frame_preprocessor.h"
+
+namespace webrtc {
+class CriticalSectionWrapper;
+
+class VideoProcessingModuleImpl : public VideoProcessingModule
+{
+public:
+
+ VideoProcessingModuleImpl(WebRtc_Word32 id);
+
+ virtual ~VideoProcessingModuleImpl();
+
+ WebRtc_Word32 Id() const;
+
+ virtual WebRtc_Word32 ChangeUniqueId(const WebRtc_Word32 id);
+
+ virtual void Reset();
+
+ virtual WebRtc_Word32 Deflickering(VideoFrame* frame,
+ FrameStats* stats);
+
+ virtual WebRtc_Word32 Denoising(VideoFrame* frame);
+
+ virtual WebRtc_Word32 BrightnessDetection(const VideoFrame& frame,
+ const FrameStats& stats);
+
+ //Frame pre-processor functions
+
+ //Enable temporal decimation
+ virtual void EnableTemporalDecimation(bool enable);
+
+ virtual void SetInputFrameResampleMode(VideoFrameResampling resamplingMode);
+
+ //Enable content analysis
+ virtual void EnableContentAnalysis(bool enable);
+
+ //Set max frame rate
+ virtual WebRtc_Word32 SetMaxFrameRate(WebRtc_UWord32 maxFrameRate);
+
+ // Set Target Resolution: frame rate and dimension
+ virtual WebRtc_Word32 SetTargetResolution(WebRtc_UWord32 width,
+ WebRtc_UWord32 height,
+ WebRtc_UWord32 frameRate);
+
+
+ // Get decimated values: frame rate/dimension
+ virtual WebRtc_UWord32 DecimatedFrameRate();
+ virtual WebRtc_UWord32 DecimatedWidth() const;
+ virtual WebRtc_UWord32 DecimatedHeight() const;
+
+ // Preprocess:
+ // Pre-process incoming frame: Sample when needed and compute content
+ // metrics when enabled.
+ // If no resampling takes place - processedFrame is set to NULL.
+ virtual WebRtc_Word32 PreprocessFrame(const VideoFrame& frame,
+ VideoFrame** processedFrame);
+ virtual VideoContentMetrics* ContentMetrics() const;
+
+private:
+ WebRtc_Word32 _id;
+ CriticalSectionWrapper& _mutex;
+
+ VPMDeflickering _deflickering;
+ VPMDenoising _denoising;
+ VPMBrightnessDetection _brightnessDetection;
+ VPMFramePreprocessor _framePreProcessor;
+};
+
+} // namespace
+
+#endif
diff --git a/modules/video_processing/main/test/unit_test/brightness_detection_test.cc b/modules/video_processing/main/test/unit_test/brightness_detection_test.cc
new file mode 100644
index 00000000..e8e68833
--- /dev/null
+++ b/modules/video_processing/main/test/unit_test/brightness_detection_test.cc
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "unit_test.h"
+#include "video_processing.h"
+
+using namespace webrtc;
+
+TEST_F(VideoProcessingModuleTest, BrightnessDetection)
+{
+ WebRtc_UWord32 frameNum = 0;
+ WebRtc_Word32 brightnessWarning = 0;
+ WebRtc_UWord32 warningCount = 0;
+ while (fread(_videoFrame.Buffer(), 1, _frameLength, _sourceFile) ==
+ _frameLength)
+ {
+ frameNum++;
+ VideoProcessingModule::FrameStats stats;
+ ASSERT_EQ(0, _vpm->GetFrameStats(&stats, _videoFrame));
+ ASSERT_GE(brightnessWarning = _vpm->BrightnessDetection(_videoFrame,
+ stats), 0);
+ if (brightnessWarning != VideoProcessingModule::kNoWarning)
+ {
+ warningCount++;
+ }
+ }
+ ASSERT_NE(0, feof(_sourceFile)) << "Error reading source file";
+
+ // Expect few warnings
+ float warningProportion = static_cast<float>(warningCount) / frameNum * 100;
+ printf("\nWarning proportions:\n");
+ printf("Stock foreman: %.1f %%\n", warningProportion);
+ EXPECT_LT(warningProportion, 10);
+
+ rewind(_sourceFile);
+ frameNum = 0;
+ warningCount = 0;
+ while (fread(_videoFrame.Buffer(), 1, _frameLength, _sourceFile) ==
+ _frameLength &&
+ frameNum < 300)
+ {
+ frameNum++;
+
+ WebRtc_UWord8* frame = _videoFrame.Buffer();
+ WebRtc_UWord32 yTmp = 0;
+ for (WebRtc_UWord32 yIdx = 0; yIdx < _width * _height; yIdx++)
+ {
+ yTmp = frame[yIdx] << 1;
+ if (yTmp > 255)
+ {
+ yTmp = 255;
+ }
+ frame[yIdx] = static_cast<WebRtc_UWord8>(yTmp);
+ }
+
+ VideoProcessingModule::FrameStats stats;
+ ASSERT_EQ(0, _vpm->GetFrameStats(&stats, _videoFrame));
+ ASSERT_GE(brightnessWarning = _vpm->BrightnessDetection(_videoFrame,
+ stats), 0);
+ EXPECT_NE(VideoProcessingModule::kDarkWarning, brightnessWarning);
+ if (brightnessWarning == VideoProcessingModule::kBrightWarning)
+ {
+ warningCount++;
+ }
+ }
+ ASSERT_NE(0, feof(_sourceFile)) << "Error reading source file";
+
+ // Expect many brightness warnings
+ warningProportion = static_cast<float>(warningCount) / frameNum * 100;
+ printf("Bright foreman: %.1f %%\n", warningProportion);
+ EXPECT_GT(warningProportion, 95);
+
+ rewind(_sourceFile);
+ frameNum = 0;
+ warningCount = 0;
+ while (fread(_videoFrame.Buffer(), 1, _frameLength, _sourceFile) == _frameLength &&
+ frameNum < 300)
+ {
+ frameNum++;
+
+ WebRtc_UWord8* frame = _videoFrame.Buffer();
+ WebRtc_Word32 yTmp = 0;
+ for (WebRtc_UWord32 yIdx = 0; yIdx < _width * _height; yIdx++)
+ {
+ yTmp = frame[yIdx] >> 1;
+ frame[yIdx] = static_cast<WebRtc_UWord8>(yTmp);
+ }
+
+ VideoProcessingModule::FrameStats stats;
+ ASSERT_EQ(0, _vpm->GetFrameStats(&stats, _videoFrame));
+ ASSERT_GE(brightnessWarning = _vpm->BrightnessDetection(_videoFrame,
+ stats), 0);
+ EXPECT_NE(VideoProcessingModule::kBrightWarning, brightnessWarning);
+ if (brightnessWarning == VideoProcessingModule::kDarkWarning)
+ {
+ warningCount++;
+ }
+ }
+ ASSERT_NE(0, feof(_sourceFile)) << "Error reading source file";
+
+ // Expect many darkness warnings
+ warningProportion = static_cast<float>(warningCount) / frameNum * 100;
+ printf("Dark foreman: %.1f %%\n\n", warningProportion);
+ EXPECT_GT(warningProportion, 90);
+}
diff --git a/modules/video_processing/main/test/unit_test/color_enhancement_test.cc b/modules/video_processing/main/test/unit_test/color_enhancement_test.cc
new file mode 100644
index 00000000..68bf43ec
--- /dev/null
+++ b/modules/video_processing/main/test/unit_test/color_enhancement_test.cc
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <cstdio>
+#include <cstdlib>
+
+#include "common_video/libyuv/include/webrtc_libyuv.h"
+#include "modules/video_processing/main/interface/video_processing.h"
+#include "modules/video_processing/main/test/unit_test/unit_test.h"
+#include "system_wrappers/interface/tick_util.h"
+#include "testsupport/fileutils.h"
+
+namespace webrtc {
+
+TEST_F(VideoProcessingModuleTest, ColorEnhancement)
+{
+ TickTime t0;
+ TickTime t1;
+ TickInterval accTicks;
+
+ // Use a shorter version of the Foreman clip for this test.
+ fclose(_sourceFile);
+ const std::string video_file =
+ webrtc::test::ResourcePath("foreman_cif_short", "yuv");
+ _sourceFile = fopen(video_file.c_str(), "rb");
+ ASSERT_TRUE(_sourceFile != NULL) <<
+ "Cannot read source file: " + video_file + "\n";
+
+ std::string output_file = webrtc::test::OutputPath() +
+ "foremanColorEnhancedVPM_cif_short.yuv";
+ FILE* modFile = fopen(output_file.c_str(), "w+b");
+ ASSERT_TRUE(modFile != NULL) << "Could not open output file.\n";
+
+ WebRtc_UWord32 frameNum = 0;
+ while (fread(_videoFrame.Buffer(), 1, _frameLength, _sourceFile) == _frameLength)
+ {
+ frameNum++;
+ t0 = TickTime::Now();
+ ASSERT_EQ(0, VideoProcessingModule::ColorEnhancement(&_videoFrame));
+ t1 = TickTime::Now();
+ accTicks += t1 - t0;
+ if (fwrite(_videoFrame.Buffer(), 1, _frameLength,
+ modFile) != _frameLength) {
+ return;
+ }
+ }
+ ASSERT_NE(0, feof(_sourceFile)) << "Error reading source file";
+
+ printf("\nTime per frame: %d us \n",
+ static_cast<int>(accTicks.Microseconds() / frameNum));
+ rewind(modFile);
+
+ printf("Comparing files...\n\n");
+ std::string reference_filename =
+ webrtc::test::ResourcePath("foremanColorEnhanced_cif_short", "yuv");
+ FILE* refFile = fopen(reference_filename.c_str(), "rb");
+ ASSERT_TRUE(refFile != NULL) << "Cannot open reference file: " <<
+ reference_filename << "\n"
+ "Create the reference by running Matlab script createTable.m.";
+
+ // get file lenghts
+ ASSERT_EQ(0, fseek(refFile, 0L, SEEK_END));
+ long refLen = ftell(refFile);
+ ASSERT_NE(-1L, refLen);
+ rewind(refFile);
+ ASSERT_EQ(0, fseek(modFile, 0L, SEEK_END));
+ long testLen = ftell(modFile);
+ ASSERT_NE(-1L, testLen);
+ rewind(modFile);
+ ASSERT_EQ(refLen, testLen) << "File lengths differ.";
+
+ VideoFrame refVideoFrame;
+ refVideoFrame.VerifyAndAllocate(_frameLength);
+ refVideoFrame.SetWidth(_width);
+ refVideoFrame.SetHeight(_height);
+
+ // Compare frame-by-frame.
+ while (fread(_videoFrame.Buffer(), 1, _frameLength, modFile) == _frameLength)
+ {
+ ASSERT_EQ(_frameLength, fread(refVideoFrame.Buffer(), 1, _frameLength, refFile));
+ EXPECT_EQ(0, memcmp(_videoFrame.Buffer(), refVideoFrame.Buffer(), _frameLength));
+ }
+ ASSERT_NE(0, feof(_sourceFile)) << "Error reading source file";
+
+ // Verify that all color pixels are enhanced, and no luminance values are
+ // altered.
+
+ WebRtc_UWord8 *testFrame = new WebRtc_UWord8[_frameLength];
+
+ // Use value 128 as probe value, since we know that this will be changed
+ // in the enhancement.
+ memset(testFrame, 128, _frameLength);
+
+ VideoFrame testVideoFrame;
+ testVideoFrame.CopyFrame(_frameLength, testFrame);
+ testVideoFrame.SetWidth(_width);
+ testVideoFrame.SetHeight(_height);
+ ASSERT_EQ(0, VideoProcessingModule::ColorEnhancement(&testVideoFrame));
+
+ EXPECT_EQ(0, memcmp(testVideoFrame.Buffer(), testFrame, _width * _height))
+ << "Function is modifying the luminance.";
+
+ EXPECT_NE(0, memcmp(testVideoFrame.Buffer() + _width * _height,
+ &testFrame[_width * _height], _width * _height / 2)) <<
+ "Function is not modifying all chrominance pixels";
+
+ ASSERT_EQ(0, fclose(refFile));
+ ASSERT_EQ(0, fclose(modFile));
+ delete [] testFrame;
+}
+
+} // namespace webrtc
diff --git a/modules/video_processing/main/test/unit_test/content_metrics_test.cc b/modules/video_processing/main/test/unit_test/content_metrics_test.cc
new file mode 100644
index 00000000..0247e995
--- /dev/null
+++ b/modules/video_processing/main/test/unit_test/content_metrics_test.cc
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "modules/video_processing/main/interface/video_processing.h"
+#include "modules/video_processing/main/source/content_analysis.h"
+#include "modules/video_processing/main/test/unit_test/unit_test.h"
+
+namespace webrtc {
+
+TEST_F(VideoProcessingModuleTest, ContentAnalysis)
+{
+ VPMContentAnalysis _ca_c(false);
+ VPMContentAnalysis _ca_sse(true);
+ VideoContentMetrics *_cM_c, *_cM_SSE;
+
+ _ca_c.Initialize(_width,_height);
+ _ca_sse.Initialize(_width,_height);
+
+ while (fread(_videoFrame.Buffer(), 1, _frameLength, _sourceFile)
+ == _frameLength)
+ {
+ _cM_c = _ca_c.ComputeContentMetrics(_videoFrame);
+ _cM_SSE = _ca_sse.ComputeContentMetrics(_videoFrame);
+
+ ASSERT_EQ(_cM_c->spatial_pred_err, _cM_SSE->spatial_pred_err);
+ ASSERT_EQ(_cM_c->spatial_pred_err_v, _cM_SSE->spatial_pred_err_v);
+ ASSERT_EQ(_cM_c->spatial_pred_err_h, _cM_SSE->spatial_pred_err_h);
+ ASSERT_EQ(_cM_c->motion_magnitude, _cM_SSE->motion_magnitude);
+ }
+ ASSERT_NE(0, feof(_sourceFile)) << "Error reading source file";
+}
+
+} // namespace webrtc
diff --git a/modules/video_processing/main/test/unit_test/createTable.m b/modules/video_processing/main/test/unit_test/createTable.m
new file mode 100644
index 00000000..2c7fb522
--- /dev/null
+++ b/modules/video_processing/main/test/unit_test/createTable.m
@@ -0,0 +1,179 @@
+% Create the color enhancement look-up table and write it to
+% file colorEnhancementTable.cpp. Copy contents of that file into
+% the source file for the color enhancement function.
+
+clear
+close all
+
+
+% First, define the color enhancement in a normalized domain
+
+% Compander function is defined in three radial zones.
+% 1. From 0 to radius r0, the compander function
+% is a second-order polynomial intersecting the points (0,0)
+% and (r0, r0), and with a slope B in (0,0).
+% 2. From r0 to r1, the compander is a third-order polynomial
+% intersecting the points (r0, r0) and (r1, r1), and with the
+% same slope as the first part in the point (r0, r0) and slope
+% equal to 1 in (r1, r1).
+% 3. For radii larger than r1, the compander function is the
+% unity scale function (no scaling at all).
+
+r0=0.07; % Dead zone radius (must be > 0)
+r1=0.6; % Enhancement zone radius (must be > r0 and < 1)
+B=0.2; % initial slope of compander function (between 0 and 1)
+
+x0=linspace(0,r0).'; % zone 1
+x1=linspace(r0,r1).'; % zone 2
+x2=linspace(r1,1).'; % zone 3
+
+A=(1-B)/r0;
+f0=A*x0.^2+B*x0; % compander function in zone 1
+
+% equation system for finding second zone parameters
+M=[r0^3 r0^2 r0 1;
+ 3*r0^2 2*r0 1 0;
+ 3*r1^2 2*r1 1 0;
+ r1^3 r1^2 r1 1];
+m=[A*r0^2+B*r0; 2*A*r0+B; 1; r1];
+% solve equations
+theta=M\m;
+
+% compander function in zone 1
+f1=[x1.^3 x1.^2 x1 ones(size(x1))]*theta;
+
+x=[x0; x1; x2];
+f=[f0; f1; x2];
+
+% plot it
+figure(1)
+plot(x,f,x,x,':')
+xlabel('Normalized radius')
+ylabel('Modified radius')
+
+
+% Now, create the look-up table in the integer color space
+[U,V]=meshgrid(0:255, 0:255); % U-V space
+U0=U;
+V0=V;
+
+% Conversion matrix from normalized YUV to RGB
+T=[1 0 1.13983; 1 -0.39465 -0.58060; 1 2.03211 0];
+Ylum=0.5;
+
+figure(2)
+Z(:,:,1)=Ylum + (U-127)/256*T(1,2) + (V-127)/256*T(1,3);
+Z(:,:,2)=Ylum + (U-127)/256*T(2,2) + (V-127)/256*T(2,3);
+Z(:,:,3)=Ylum + (U-127)/256*T(3,2) + (V-127)/256*T(3,3);
+Z=max(Z,0);
+Z=min(Z,1);
+subplot(121)
+image(Z);
+axis square
+axis off
+set(gcf,'color','k')
+
+R = sqrt((U-127).^2 + (V-127).^2);
+Rnorm = R/127;
+RnormMod = Rnorm;
+RnormMod(RnormMod==0)=1; % avoid division with zero
+
+% find indices to pixels in dead-zone (zone 1)
+ix=find(Rnorm<=r0);
+scaleMatrix = (A*Rnorm(ix).^2 + B*Rnorm(ix))./RnormMod(ix);
+U(ix)=(U(ix)-127).*scaleMatrix+127;
+V(ix)=(V(ix)-127).*scaleMatrix+127;
+
+% find indices to pixels in zone 2
+ix=find(Rnorm>r0 & Rnorm<=r1);
+scaleMatrix = (theta(1)*Rnorm(ix).^3 + theta(2)*Rnorm(ix).^2 + ...
+ theta(3)*Rnorm(ix) + theta(4)) ./ RnormMod(ix);
+U(ix)=(U(ix)-127).*scaleMatrix + 127;
+V(ix)=(V(ix)-127).*scaleMatrix + 127;
+
+% round to integer values and saturate
+U=round(U);
+V=round(V);
+U=max(min(U,255),0);
+V=max(min(V,255),0);
+
+Z(:,:,1)=Ylum + (U-127)/256*T(1,2) + (V-127)/256*T(1,3);
+Z(:,:,2)=Ylum + (U-127)/256*T(2,2) + (V-127)/256*T(2,3);
+Z(:,:,3)=Ylum + (U-127)/256*T(3,2) + (V-127)/256*T(3,3);
+Z=max(Z,0);
+Z=min(Z,1);
+subplot(122)
+image(Z);
+axis square
+axis off
+
+figure(3)
+subplot(121)
+mesh(U-U0)
+subplot(122)
+mesh(V-V0)
+
+
+
+% Last, write to file
+% Write only one matrix, since U=V'
+
+fid = fopen('../out/Debug/colorEnhancementTable.h','wt');
+if fid==-1
+ error('Cannot open file colorEnhancementTable.cpp');
+end
+
+fprintf(fid,'//colorEnhancementTable.h\n\n');
+fprintf(fid,'//Copy the constant table to the appropriate header file.\n\n');
+
+fprintf(fid,'//Table created with Matlab script createTable.m\n\n');
+fprintf(fid,'//Usage:\n');
+fprintf(fid,'// Umod=colorTable[U][V]\n');
+fprintf(fid,'// Vmod=colorTable[V][U]\n');
+
+fprintf(fid,'static unsigned char colorTable[%i][%i] = {\n', size(U,1), size(U,2));
+
+for u=1:size(U,2)
+ fprintf(fid,' {%i', U(1,u));
+ for v=2:size(U,1)
+ fprintf(fid,', %i', U(v,u));
+ end
+ fprintf(fid,'}');
+ if u<size(U,2)
+ fprintf(fid,',');
+ end
+ fprintf(fid,'\n');
+end
+fprintf(fid,'};\n\n');
+fclose(fid);
+fprintf('done');
+
+
+answ=input('Create test vector (takes some time...)? y/n : ','s');
+if answ ~= 'y'
+ return
+end
+
+% Also, create test vectors
+
+% Read test file foreman.yuv
+fprintf('Reading test file...')
+[y,u,v]=readYUV420file('../out/Debug/testFiles/foreman_cif.yuv',352,288);
+fprintf(' done\n');
+unew=uint8(zeros(size(u)));
+vnew=uint8(zeros(size(v)));
+
+% traverse all frames
+for k=1:size(y,3)
+ fprintf('Frame %i\n', k);
+ for r=1:size(u,1)
+ for c=1:size(u,2)
+ unew(r,c,k) = uint8(U(double(v(r,c,k))+1, double(u(r,c,k))+1));
+ vnew(r,c,k) = uint8(V(double(v(r,c,k))+1, double(u(r,c,k))+1));
+ end
+ end
+end
+
+fprintf('\nWriting modified test file...')
+writeYUV420file('../out/Debug/foremanColorEnhanced.yuv',y,unew,vnew);
+fprintf(' done\n');
diff --git a/modules/video_processing/main/test/unit_test/deflickering_test.cc b/modules/video_processing/main/test/unit_test/deflickering_test.cc
new file mode 100644
index 00000000..7119bdb8
--- /dev/null
+++ b/modules/video_processing/main/test/unit_test/deflickering_test.cc
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <cstdio>
+#include <cstdlib>
+
+#include "modules/video_processing/main/interface/video_processing.h"
+#include "modules/video_processing/main/test/unit_test/unit_test.h"
+#include "system_wrappers/interface/tick_util.h"
+#include "testsupport/fileutils.h"
+
+namespace webrtc {
+
+TEST_F(VideoProcessingModuleTest, Deflickering)
+{
+ enum { NumRuns = 30 };
+ WebRtc_UWord32 frameNum = 0;
+ const WebRtc_UWord32 frameRate = 15;
+
+ WebRtc_Word64 minRuntime = 0;
+ WebRtc_Word64 avgRuntime = 0;
+
+ // Close automatically opened Foreman.
+ fclose(_sourceFile);
+ const std::string input_file =
+ webrtc::test::ResourcePath("deflicker_before_cif_short", "yuv");
+ _sourceFile = fopen(input_file.c_str(), "rb");
+ ASSERT_TRUE(_sourceFile != NULL) <<
+ "Cannot read input file: " << input_file << "\n";
+
+ const std::string output_file =
+ webrtc::test::OutputPath() + "deflicker_output_cif_short.yuv";
+ FILE* deflickerFile = fopen(output_file.c_str(), "wb");
+ ASSERT_TRUE(deflickerFile != NULL) <<
+ "Could not open output file: " << output_file << "\n";
+
+ printf("\nRun time [us / frame]:\n");
+ for (WebRtc_UWord32 runIdx = 0; runIdx < NumRuns; runIdx++)
+ {
+ TickTime t0;
+ TickTime t1;
+ TickInterval accTicks;
+ WebRtc_UWord32 timeStamp = 1;
+
+ frameNum = 0;
+ while (fread(_videoFrame.Buffer(), 1, _frameLength, _sourceFile) == _frameLength)
+ {
+ frameNum++;
+ _videoFrame.SetTimeStamp(timeStamp);
+
+ t0 = TickTime::Now();
+ VideoProcessingModule::FrameStats stats;
+ ASSERT_EQ(0, _vpm->GetFrameStats(&stats, _videoFrame));
+ ASSERT_EQ(0, _vpm->Deflickering(&_videoFrame, &stats));
+ t1 = TickTime::Now();
+ accTicks += t1 - t0;
+
+ if (runIdx == 0)
+ {
+ if (fwrite(_videoFrame.Buffer(), 1, _frameLength,
+ deflickerFile) != _frameLength) {
+ return;
+ }
+ }
+ timeStamp += (90000 / frameRate);
+ }
+ ASSERT_NE(0, feof(_sourceFile)) << "Error reading source file";
+
+ printf("%u\n", static_cast<int>(accTicks.Microseconds() / frameNum));
+ if (accTicks.Microseconds() < minRuntime || runIdx == 0)
+ {
+ minRuntime = accTicks.Microseconds();
+ }
+ avgRuntime += accTicks.Microseconds();
+
+ rewind(_sourceFile);
+ }
+ ASSERT_EQ(0, fclose(deflickerFile));
+ // TODO(kjellander): Add verification of deflicker output file.
+
+ printf("\nAverage run time = %d us / frame\n",
+ static_cast<int>(avgRuntime / frameNum / NumRuns));
+ printf("Min run time = %d us / frame\n\n",
+ static_cast<int>(minRuntime / frameNum));
+}
+
+} // namespace webrtc
diff --git a/modules/video_processing/main/test/unit_test/denoising_test.cc b/modules/video_processing/main/test/unit_test/denoising_test.cc
new file mode 100644
index 00000000..a4d97619
--- /dev/null
+++ b/modules/video_processing/main/test/unit_test/denoising_test.cc
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <cstdio>
+#include <cstdlib>
+
+#include "modules/video_processing/main/interface/video_processing.h"
+#include "modules/video_processing/main/test/unit_test/unit_test.h"
+#include "system_wrappers/interface/tick_util.h"
+#include "testsupport/fileutils.h"
+
+namespace webrtc {
+
+TEST_F(VideoProcessingModuleTest, Denoising)
+{
+ enum { NumRuns = 10 };
+ WebRtc_UWord32 frameNum = 0;
+
+ WebRtc_Word64 minRuntime = 0;
+ WebRtc_Word64 avgRuntime = 0;
+
+ const std::string denoise_filename =
+ webrtc::test::OutputPath() + "denoise_testfile.yuv";
+ FILE* denoiseFile = fopen(denoise_filename.c_str(), "wb");
+ ASSERT_TRUE(denoiseFile != NULL) <<
+ "Could not open output file: " << denoise_filename << "\n";
+
+ const std::string noise_filename =
+ webrtc::test::OutputPath() + "noise_testfile.yuv";
+ FILE* noiseFile = fopen(noise_filename.c_str(), "wb");
+ ASSERT_TRUE(noiseFile != NULL) <<
+ "Could not open noisy file: " << noise_filename << "\n";
+
+ printf("\nRun time [us / frame]:\n");
+ for (WebRtc_UWord32 runIdx = 0; runIdx < NumRuns; runIdx++)
+ {
+ TickTime t0;
+ TickTime t1;
+ TickInterval accTicks;
+ WebRtc_Word32 modifiedPixels = 0;
+
+ frameNum = 0;
+ while (fread(_videoFrame.Buffer(), 1, _frameLength, _sourceFile) == _frameLength)
+ {
+ frameNum++;
+ WebRtc_UWord8* sourceBuffer = _videoFrame.Buffer();
+
+ // Add noise to a part in video stream
+ // Random noise
+ // TODO: investigate the effectiveness of this test.
+
+ //for(WebRtc_UWord32 ir = 0; ir < _frameLength; ir++)
+ // sourceBuffer[ir] = 128
+ for (WebRtc_UWord32 ir = 0; ir < _height; ir++)
+ {
+ WebRtc_UWord32 ik = ir * _width;
+ for (WebRtc_UWord32 ic = 0; ic < _width; ic++)
+ {
+ WebRtc_UWord8 r = rand() % 16;
+ r -= 8;
+ if (ir < _height / 4)
+ r = 0;
+ if (ir >= 3 * _height / 4)
+ r = 0;
+ if (ic < _width / 4)
+ r = 0;
+ if (ic >= 3 * _width / 4)
+ r = 0;
+
+ /*WebRtc_UWord8 pixelValue = 0;
+ if (ir >= _height / 2)
+ { // Region 3 or 4
+ pixelValue = 170;
+ }
+ if (ic >= _width / 2)
+ { // Region 2 or 4
+ pixelValue += 85;
+ }
+ pixelValue += r;
+ sourceBuffer[ik + ic] = pixelValue;
+ */
+ sourceBuffer[ik + ic] += r;
+ }
+ }
+
+ if (runIdx == 0)
+ {
+ if (fwrite(_videoFrame.Buffer(), 1, _frameLength,
+ noiseFile) != _frameLength) {
+ return;
+ }
+ }
+
+ t0 = TickTime::Now();
+ ASSERT_GE(modifiedPixels = _vpm->Denoising(&_videoFrame), 0);
+ t1 = TickTime::Now();
+ accTicks += t1 - t0;
+
+ if (runIdx == 0)
+ {
+ if (fwrite(_videoFrame.Buffer(), 1, _frameLength,
+ denoiseFile) != _frameLength) {
+ return;
+ }
+ }
+ }
+ ASSERT_NE(0, feof(_sourceFile)) << "Error reading source file";
+
+ printf("%u\n", static_cast<int>(accTicks.Microseconds() / frameNum));
+ if (accTicks.Microseconds() < minRuntime || runIdx == 0)
+ {
+ minRuntime = accTicks.Microseconds();
+ }
+ avgRuntime += accTicks.Microseconds();
+
+ rewind(_sourceFile);
+ }
+ ASSERT_EQ(0, fclose(denoiseFile));
+ ASSERT_EQ(0, fclose(noiseFile));
+ printf("\nAverage run time = %d us / frame\n",
+ static_cast<int>(avgRuntime / frameNum / NumRuns));
+ printf("Min run time = %d us / frame\n\n",
+ static_cast<int>(minRuntime / frameNum));
+}
+
+} // namespace webrtc
diff --git a/modules/video_processing/main/test/unit_test/readYUV420file.m b/modules/video_processing/main/test/unit_test/readYUV420file.m
new file mode 100644
index 00000000..03013efd
--- /dev/null
+++ b/modules/video_processing/main/test/unit_test/readYUV420file.m
@@ -0,0 +1,45 @@
+function [Y,U,V] = readYUV420file(filename, width, height)
+% [Y,U,V] = readYUVfile(filename, width, height)
+
+fid = fopen(filename,'rb');
+if fid==-1
+ error(['Cannot open file ' filename]);
+end
+
+% Number of pixels per image
+nPx=width*height;
+
+% nPx bytes luminance, nPx/4 bytes U, nPx/4 bytes V
+frameSizeBytes = nPx*1.5;
+
+% calculate number of frames
+fseek(fid,0,'eof'); % move to end of file
+fileLen=ftell(fid); % number of bytes
+fseek(fid,0,'bof'); % rewind to start
+
+% calculate number of frames
+numFrames = floor(fileLen/frameSizeBytes);
+
+Y=uint8(zeros(height,width,numFrames));
+U=uint8(zeros(height/2,width/2,numFrames));
+V=uint8(zeros(height/2,width/2,numFrames));
+
+[X,nBytes]=fread(fid, frameSizeBytes, 'uchar');
+
+for k=1:numFrames
+
+ % Store luminance
+ Y(:,:,k)=uint8(reshape(X(1:nPx), width, height).');
+
+ % Store U channel
+ U(:,:,k)=uint8(reshape(X(nPx + (1:nPx/4)), width/2, height/2).');
+
+ % Store V channel
+ V(:,:,k)=uint8(reshape(X(nPx + nPx/4 + (1:nPx/4)), width/2, height/2).');
+
+ % Read next frame
+ [X,nBytes]=fread(fid, frameSizeBytes, 'uchar');
+end
+
+
+fclose(fid);
diff --git a/modules/video_processing/main/test/unit_test/unit_test.cc b/modules/video_processing/main/test/unit_test/unit_test.cc
new file mode 100644
index 00000000..f6d7d10b
--- /dev/null
+++ b/modules/video_processing/main/test/unit_test/unit_test.cc
@@ -0,0 +1,372 @@
+/*
+ * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "modules/video_processing/main/test/unit_test/unit_test.h"
+
+#include <string>
+
+#include "common_video/libyuv/include/webrtc_libyuv.h"
+#include "system_wrappers/interface/tick_util.h"
+#include "testsupport/fileutils.h"
+
+namespace webrtc {
+
+// The |sourceFrame| is scaled to |target_width|,|target_height|, using the
+// filter mode set to |mode|. The |expected_psnr| is used to verify basic
+// quality when the resampled frame is scaled back up/down to the
+// original/source size. |expected_psnr| is set to be ~0.1/0.05dB lower than
+// actual PSNR verified under the same conditions.
+void TestSize(const VideoFrame& sourceFrame, int target_width,
+ int target_height, int mode, double expected_psnr,
+ VideoProcessingModule* vpm);
+
+VideoProcessingModuleTest::VideoProcessingModuleTest() :
+ _vpm(NULL),
+ _sourceFile(NULL),
+ _width(352),
+ _height(288),
+ _frameLength(CalcBufferSize(kI420, 352, 288))
+{
+}
+
+void VideoProcessingModuleTest::SetUp()
+{
+ _vpm = VideoProcessingModule::Create(0);
+ ASSERT_TRUE(_vpm != NULL);
+
+ ASSERT_EQ(0, _videoFrame.VerifyAndAllocate(_frameLength));
+ _videoFrame.SetWidth(_width);
+ _videoFrame.SetHeight(_height);
+
+ const std::string video_file =
+ webrtc::test::ResourcePath("foreman_cif", "yuv");
+ _sourceFile = fopen(video_file.c_str(),"rb");
+ ASSERT_TRUE(_sourceFile != NULL) <<
+ "Cannot read source file: " + video_file + "\n";
+}
+
+void VideoProcessingModuleTest::TearDown()
+{
+ if (_sourceFile != NULL) {
+ ASSERT_EQ(0, fclose(_sourceFile));
+ }
+ _sourceFile = NULL;
+
+ if (_vpm != NULL) {
+ VideoProcessingModule::Destroy(_vpm);
+ }
+ _vpm = NULL;
+}
+
+TEST_F(VideoProcessingModuleTest, HandleNullBuffer)
+{
+ VideoProcessingModule::FrameStats stats;
+ ASSERT_EQ(0, _vpm->GetFrameStats(&stats, _videoFrame));
+ // Video frame with unallocated buffer.
+ VideoFrame videoFrame;
+ videoFrame.SetWidth(_width);
+ videoFrame.SetHeight(_height);
+
+ EXPECT_EQ(-3, _vpm->GetFrameStats(&stats, videoFrame));
+
+ EXPECT_EQ(-1, _vpm->ColorEnhancement(&videoFrame));
+
+ EXPECT_EQ(-1, _vpm->Deflickering(&videoFrame, &stats));
+
+ EXPECT_EQ(-1, _vpm->Denoising(&videoFrame));
+
+ EXPECT_EQ(-3, _vpm->BrightnessDetection(videoFrame, stats));
+}
+
+TEST_F(VideoProcessingModuleTest, HandleBadStats)
+{
+ VideoProcessingModule::FrameStats stats;
+
+ ASSERT_EQ(_frameLength, fread(_videoFrame.Buffer(), 1, _frameLength,
+ _sourceFile));
+
+ _videoFrame.SetWidth(_width);
+ _videoFrame.SetHeight(_height);
+ EXPECT_EQ(-1, _vpm->Deflickering(&_videoFrame, &stats));
+
+ EXPECT_EQ(-3, _vpm->BrightnessDetection(_videoFrame, stats));
+}
+
+TEST_F(VideoProcessingModuleTest, HandleBadSize)
+{
+ VideoProcessingModule::FrameStats stats;
+ ASSERT_EQ(0, _vpm->GetFrameStats(&stats, _videoFrame));
+
+ // Bad width
+ _videoFrame.SetWidth(0);
+ EXPECT_EQ(-3, _vpm->GetFrameStats(&stats, _videoFrame));
+
+ EXPECT_EQ(-1, _vpm->ColorEnhancement(&_videoFrame));
+
+ EXPECT_EQ(-1, _vpm->Deflickering(&_videoFrame, &stats));
+
+ EXPECT_EQ(-1, _vpm->Denoising(&_videoFrame));
+
+ EXPECT_EQ(-3, _vpm->BrightnessDetection(_videoFrame, stats));
+
+ // Bad height
+ _videoFrame.SetWidth(_width);
+ _videoFrame.SetHeight(0);
+ EXPECT_EQ(-3, _vpm->GetFrameStats(&stats, _videoFrame));
+
+ EXPECT_EQ(-1, _vpm->ColorEnhancement(&_videoFrame));
+
+ EXPECT_EQ(-1, _vpm->Deflickering(&_videoFrame, &stats));
+
+ EXPECT_EQ(-1, _vpm->Denoising(&_videoFrame));
+
+ EXPECT_EQ(-3, _vpm->BrightnessDetection(_videoFrame, stats));
+
+ EXPECT_EQ(VPM_PARAMETER_ERROR, _vpm->SetTargetResolution(0,0,0));
+ EXPECT_EQ(VPM_PARAMETER_ERROR, _vpm->SetMaxFrameRate(0));
+
+ VideoFrame *outFrame = NULL;
+ EXPECT_EQ(VPM_PARAMETER_ERROR, _vpm->PreprocessFrame(_videoFrame,
+ &outFrame));
+}
+
+TEST_F(VideoProcessingModuleTest, IdenticalResultsAfterReset)
+{
+ VideoFrame videoFrame2;
+ VideoProcessingModule::FrameStats stats;
+
+ ASSERT_EQ(0, videoFrame2.VerifyAndAllocate(_frameLength));
+ videoFrame2.SetWidth(_width);
+ videoFrame2.SetHeight(_height);
+
+ // Only testing non-static functions here.
+ ASSERT_EQ(_frameLength, fread(_videoFrame.Buffer(), 1, _frameLength,
+ _sourceFile));
+ ASSERT_EQ(0, _vpm->GetFrameStats(&stats, _videoFrame));
+ memcpy(videoFrame2.Buffer(), _videoFrame.Buffer(), _frameLength);
+ ASSERT_EQ(0, _vpm->Deflickering(&_videoFrame, &stats));
+ _vpm->Reset();
+ // Retrieve frame stats again in case Deflickering() has zeroed them.
+ ASSERT_EQ(0, _vpm->GetFrameStats(&stats, videoFrame2));
+ ASSERT_EQ(0, _vpm->Deflickering(&videoFrame2, &stats));
+ EXPECT_EQ(0, memcmp(_videoFrame.Buffer(), videoFrame2.Buffer(),
+ _frameLength));
+
+ ASSERT_EQ(_frameLength, fread(_videoFrame.Buffer(), 1, _frameLength,
+ _sourceFile));
+ memcpy(videoFrame2.Buffer(), _videoFrame.Buffer(), _frameLength);
+ ASSERT_GE(_vpm->Denoising(&_videoFrame), 0);
+ _vpm->Reset();
+ ASSERT_GE(_vpm->Denoising(&videoFrame2), 0);
+ EXPECT_EQ(0, memcmp(_videoFrame.Buffer(), videoFrame2.Buffer(),
+ _frameLength));
+
+ ASSERT_EQ(_frameLength, fread(_videoFrame.Buffer(), 1, _frameLength,
+ _sourceFile));
+ ASSERT_EQ(0, _vpm->GetFrameStats(&stats, _videoFrame));
+ memcpy(videoFrame2.Buffer(), _videoFrame.Buffer(), _frameLength);
+ ASSERT_EQ(0, _vpm->BrightnessDetection(_videoFrame, stats));
+ _vpm->Reset();
+ ASSERT_EQ(0, _vpm->BrightnessDetection(videoFrame2, stats));
+ EXPECT_EQ(0, memcmp(_videoFrame.Buffer(), videoFrame2.Buffer(),
+ _frameLength));
+}
+
+TEST_F(VideoProcessingModuleTest, FrameStats)
+{
+ VideoProcessingModule::FrameStats stats;
+ ASSERT_EQ(_frameLength, fread(_videoFrame.Buffer(), 1, _frameLength,
+ _sourceFile));
+
+ EXPECT_FALSE(_vpm->ValidFrameStats(stats));
+ EXPECT_EQ(0, _vpm->GetFrameStats(&stats, _videoFrame));
+ EXPECT_TRUE(_vpm->ValidFrameStats(stats));
+
+ printf("\nFrameStats\n");
+ printf("mean: %u\nnumPixels: %u\nsubSamplWidth: "
+ "%u\nsumSamplHeight: %u\nsum: %u\n\n",
+ static_cast<unsigned int>(stats.mean),
+ static_cast<unsigned int>(stats.numPixels),
+ static_cast<unsigned int>(stats.subSamplHeight),
+ static_cast<unsigned int>(stats.subSamplWidth),
+ static_cast<unsigned int>(stats.sum));
+
+ _vpm->ClearFrameStats(&stats);
+ EXPECT_FALSE(_vpm->ValidFrameStats(stats));
+}
+
+TEST_F(VideoProcessingModuleTest, PreprocessorLogic)
+{
+ // Disable temporal sampling
+ _vpm->EnableTemporalDecimation(false);
+ ASSERT_EQ(VPM_OK, _vpm->SetMaxFrameRate(30));
+ ASSERT_EQ(VPM_OK, _vpm->SetTargetResolution(100, 100, 15));
+ // Revert
+ _vpm->EnableTemporalDecimation(true);
+ ASSERT_EQ(VPM_OK, _vpm->SetTargetResolution(100, 100, 30));
+ // Disable spatial sampling
+ _vpm->SetInputFrameResampleMode(kNoRescaling);
+ ASSERT_EQ(VPM_OK, _vpm->SetTargetResolution(100, 100, 30));
+ VideoFrame *outFrame = NULL;
+ ASSERT_EQ(VPM_OK, _vpm->PreprocessFrame(_videoFrame, &outFrame));
+ // No rescaling=> output frame = NULL
+ ASSERT_TRUE(outFrame == NULL);
+}
+
+TEST_F(VideoProcessingModuleTest, Resampler)
+{
+ enum { NumRuns = 1 };
+
+ WebRtc_Word64 minRuntime = 0;
+ WebRtc_Word64 avgRuntime = 0;
+
+ TickTime t0;
+ TickTime t1;
+ TickInterval accTicks;
+ WebRtc_Word32 height = 288;
+ WebRtc_Word32 width = 352;
+ WebRtc_Word32 lengthSourceFrame = width*height*3/2;
+
+ rewind(_sourceFile);
+ ASSERT_TRUE(_sourceFile != NULL) <<
+ "Cannot read input file \n";
+
+ // CA not needed here
+ _vpm->EnableContentAnalysis(false);
+ // no temporal decimation
+ _vpm->EnableTemporalDecimation(false);
+
+ // Reading test frame
+ VideoFrame sourceFrame;
+ ASSERT_EQ(0, sourceFrame.VerifyAndAllocate(lengthSourceFrame));
+ EXPECT_GT(fread(sourceFrame.Buffer(), 1, lengthSourceFrame, _sourceFile), 0u);
+ ASSERT_EQ(0, sourceFrame.SetLength(lengthSourceFrame));
+ sourceFrame.SetHeight(height);
+ sourceFrame.SetWidth(width);
+
+ for (WebRtc_UWord32 runIdx = 0; runIdx < NumRuns; runIdx++)
+ {
+ // initiate test timer
+ t0 = TickTime::Now();
+
+ // Test scaling to different sizes: source is of |width|/|height| = 352/288.
+ // Scaling mode in VPM is currently fixed to kScaleBox (mode = 3).
+ TestSize(sourceFrame, 100, 50, 3, 24.0, _vpm);
+ TestSize(sourceFrame, 352/4, 288/4, 3, 25.2, _vpm);
+ TestSize(sourceFrame, 352/2, 288/2, 3, 28.1, _vpm);
+ TestSize(sourceFrame, 352, 288, 3, -1, _vpm); // no resampling.
+ TestSize(sourceFrame, 2*352, 2*288, 3, 32.2, _vpm);
+ TestSize(sourceFrame, 400, 256, 3, 31.3, _vpm);
+ TestSize(sourceFrame, 480, 640, 3, 32.15, _vpm);
+ TestSize(sourceFrame, 960, 720, 3, 32.2, _vpm);
+ TestSize(sourceFrame, 1280, 720, 3, 32.15, _vpm);
+ // Upsampling to odd size.
+ TestSize(sourceFrame, 501, 333, 3, 32.05, _vpm);
+ // Downsample to odd size.
+ TestSize(sourceFrame, 281, 175, 3, 29.3, _vpm);
+
+ // stop timer
+ t1 = TickTime::Now();
+ accTicks += t1 - t0;
+
+ if (accTicks.Microseconds() < minRuntime || runIdx == 0) {
+ minRuntime = accTicks.Microseconds();
+ }
+ avgRuntime += accTicks.Microseconds();
+ }
+
+ sourceFrame.Free();
+
+ printf("\nAverage run time = %d us / frame\n",
+ //static_cast<int>(avgRuntime / frameNum / NumRuns));
+ static_cast<int>(avgRuntime));
+ printf("Min run time = %d us / frame\n\n",
+ //static_cast<int>(minRuntime / frameNum));
+ static_cast<int>(minRuntime));
+}
+
+void TestSize(const VideoFrame& source_frame, int target_width,
+ int target_height, int mode, double expected_psnr,
+ VideoProcessingModule* vpm) {
+ int source_width = source_frame.Width();
+ int source_height = source_frame.Height();
+ VideoFrame* out_frame = NULL;
+
+ ASSERT_EQ(VPM_OK, vpm->SetTargetResolution(target_width, target_height, 30));
+ ASSERT_EQ(VPM_OK, vpm->PreprocessFrame(source_frame, &out_frame));
+
+ // If the frame was resampled (scale changed) then:
+ // (1) verify the new size and write out processed frame for viewing.
+ // (2) scale the resampled frame (|out_frame|) back to the original size and
+ // compute PSNR relative to |source_frame| (for automatic verification).
+ // (3) write out the processed frame for viewing.
+ if (target_width != static_cast<int>(source_width) ||
+ target_height != static_cast<int>(source_height)) {
+ int target_half_width = (target_width + 1) >> 1;
+ int target_half_height = (target_height + 1) >> 1;
+ int required_size_resampled = target_width * target_height +
+ 2 * (target_half_width * target_half_height);
+ ASSERT_EQ(required_size_resampled, static_cast<int>(out_frame->Length()));
+
+ // Write the processed frame to file for visual inspection.
+ std::ostringstream filename;
+ filename << webrtc::test::OutputPath() << "Resampler_"<< mode << "_" <<
+ "from_" << source_width << "x" << source_height << "_to_" <<
+ target_width << "x" << target_height << "_30Hz_P420.yuv";
+ std::cout << "Watch " << filename.str() << " and verify that it is okay."
+ << std::endl;
+ FILE* stand_alone_file = fopen(filename.str().c_str(), "wb");
+ if (fwrite(out_frame->Buffer(), 1,
+ out_frame->Length(), stand_alone_file) != out_frame->Length()) {
+ fprintf(stderr, "Failed to write frame for scaling to width/height: "
+ " %d %d \n", target_width, target_height);
+ return;
+ }
+ fclose(stand_alone_file);
+
+ VideoFrame resampled_source_frame;
+ resampled_source_frame.CopyFrame(*out_frame);
+
+ // Scale |resampled_source_frame| back to original/source size.
+ ASSERT_EQ(VPM_OK, vpm->SetTargetResolution(source_width,
+ source_height,
+ 30));
+ ASSERT_EQ(VPM_OK, vpm->PreprocessFrame(resampled_source_frame,
+ &out_frame));
+
+ // Write the processed frame to file for visual inspection.
+ std::ostringstream filename2;
+ filename2 << webrtc::test::OutputPath() << "Resampler_"<< mode << "_" <<
+ "from_" << target_width << "x" << target_height << "_to_" <<
+ source_width << "x" << source_height << "_30Hz_P420.yuv";
+ std::cout << "Watch " << filename2.str() << " and verify that it is okay."
+ << std::endl;
+ stand_alone_file = fopen(filename2.str().c_str(), "wb");
+ if (fwrite(out_frame->Buffer(), 1,
+ out_frame->Length(), stand_alone_file) != out_frame->Length()) {
+ fprintf(stderr, "Failed to write frame for scaling to width/height "
+ "%d %d \n", source_width, source_height);
+ return;
+ }
+ fclose(stand_alone_file);
+
+ // Compute the PSNR and check expectation.
+ double psnr = I420PSNR(source_frame.Buffer(), out_frame->Buffer(),
+ source_width, source_height);
+ EXPECT_GT(psnr, expected_psnr);
+ printf("PSNR: %f. PSNR is between source of size %d %d, and a modified "
+ "source which is scaled down/up to: %d %d, and back to source size \n",
+ psnr, source_width, source_height, target_width, target_height);
+
+ resampled_source_frame.Free();
+ }
+}
+
+} // namespace webrtc
diff --git a/modules/video_processing/main/test/unit_test/unit_test.h b/modules/video_processing/main/test/unit_test/unit_test.h
new file mode 100644
index 00000000..2363e1a1
--- /dev/null
+++ b/modules/video_processing/main/test/unit_test/unit_test.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_MODULES_VIDEO_PROCESSING_MAIN_TEST_UNIT_TEST_VPM_UNIT_TEST_H
+#define WEBRTC_MODULES_VIDEO_PROCESSING_MAIN_TEST_UNIT_TEST_VPM_UNIT_TEST_H
+
+#include "gtest/gtest.h"
+#include "modules/video_processing/main/interface/video_processing.h"
+#include "system_wrappers/interface/trace.h"
+#include "testsupport/fileutils.h"
+
+namespace webrtc {
+
+class VideoProcessingModuleTest : public ::testing::Test
+{
+protected:
+ VideoProcessingModuleTest();
+ virtual void SetUp();
+ virtual void TearDown();
+ static void SetUpTestCase()
+ {
+ Trace::CreateTrace();
+ std::string trace_file = webrtc::test::OutputPath() + "VPMTrace.txt";
+ ASSERT_EQ(0, Trace::SetTraceFile(trace_file.c_str()));
+ }
+ static void TearDownTestCase()
+ {
+ Trace::ReturnTrace();
+ }
+ VideoProcessingModule* _vpm;
+ FILE* _sourceFile;
+ VideoFrame _videoFrame;
+ const WebRtc_UWord32 _width;
+ const WebRtc_UWord32 _height;
+ const WebRtc_UWord32 _frameLength;
+};
+
+} // namespace webrtc
+
+#endif // WEBRTC_MODULES_VIDEO_PROCESSING_MAIN_TEST_UNIT_TEST_VPM_UNIT_TEST_H
diff --git a/modules/video_processing/main/test/unit_test/writeYUV420file.m b/modules/video_processing/main/test/unit_test/writeYUV420file.m
new file mode 100644
index 00000000..69a88083
--- /dev/null
+++ b/modules/video_processing/main/test/unit_test/writeYUV420file.m
@@ -0,0 +1,22 @@
+function writeYUV420file(filename, Y, U, V)
+% writeYUV420file(filename, Y, U, V)
+
+fid = fopen(filename,'wb');
+if fid==-1
+ error(['Cannot open file ' filename]);
+end
+
+numFrames=size(Y,3);
+
+for k=1:numFrames
+ % Write luminance
+ fwrite(fid,uint8(Y(:,:,k).'), 'uchar');
+
+ % Write U channel
+ fwrite(fid,uint8(U(:,:,k).'), 'uchar');
+
+ % Write V channel
+ fwrite(fid,uint8(V(:,:,k).'), 'uchar');
+end
+
+fclose(fid);
diff --git a/modules/video_processing/main/test/vpm_tests.gypi b/modules/video_processing/main/test/vpm_tests.gypi
new file mode 100644
index 00000000..0888b1d1
--- /dev/null
+++ b/modules/video_processing/main/test/vpm_tests.gypi
@@ -0,0 +1,39 @@
+# Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS. All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+
+{
+ 'targets': [
+ {
+ 'target_name': 'video_processing_unittests',
+ 'type': 'executable',
+ 'dependencies': [
+ 'video_processing',
+ 'webrtc_utility',
+ '<(webrtc_root)/test/test.gyp:test_support_main',
+ '<(DEPTH)/testing/gtest.gyp:gtest',
+ ],
+ 'sources': [
+ # headers
+ 'unit_test/unit_test.h',
+ # sources
+ 'unit_test/brightness_detection_test.cc',
+ 'unit_test/color_enhancement_test.cc',
+ 'unit_test/content_metrics_test.cc',
+ 'unit_test/deflickering_test.cc',
+ 'unit_test/denoising_test.cc',
+ 'unit_test/unit_test.cc',
+ ], # sources
+ },
+ ],
+}
+
+# Local Variables:
+# tab-width:2
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=2 shiftwidth=2: