1 files changed, 87 insertions, 0 deletions
diff --git a/webrtc/modules/video_processing/content_analysis.h b/webrtc/modules/video_processing/content_analysis.h
new file mode 100644
index 0000000000..d3a11bd091
--- /dev/null
+++ b/webrtc/modules/video_processing/content_analysis.h
@@ -0,0 +1,87 @@
+/*
+ *  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 WEBRTC_MODULES_VIDEO_PROCESSING_CONTENT_ANALYSIS_H_
+#define WEBRTC_MODULES_VIDEO_PROCESSING_CONTENT_ANALYSIS_H_
+
+#include "webrtc/modules/include/module_common_types.h"
+#include "webrtc/modules/video_processing/include/video_processing_defines.h"
+#include "webrtc/typedefs.h"
+#include "webrtc/video_frame.h"
+
+namespace webrtc {
+
+class VPMContentAnalysis {
+ public:
+  // When |runtime_cpu_detection| is true, runtime selection of an optimized
+  // code path is allowed.
+  explicit 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
+  int32_t 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
+  int32_t Release();
+
+ private:
+  // return motion metrics
+  VideoContentMetrics* ContentMetrics();
+
+  // Normalized temporal difference metric: for motion magnitude
+  typedef int32_t (VPMContentAnalysis::*TemporalDiffMetricFunc)();
+  TemporalDiffMetricFunc TemporalDiffMetric;
+  int32_t TemporalDiffMetric_C();
+
+  // Motion metric method: call 2 metrics (magnitude and size)
+  int32_t ComputeMotionMetrics();
+
+  // Spatial metric method: computes the 3 frame-average spatial
+  //  prediction errors (1x2,2x1,2x2)
+  typedef int32_t (VPMContentAnalysis::*ComputeSpatialMetricsFunc)();
+  ComputeSpatialMetricsFunc ComputeSpatialMetrics;
+  int32_t ComputeSpatialMetrics_C();
+
+#if defined(WEBRTC_ARCH_X86_FAMILY)
+  int32_t ComputeSpatialMetrics_SSE2();
+  int32_t TemporalDiffMetric_SSE2();
+#endif
+
+  const uint8_t* orig_frame_;
+  uint8_t* prev_frame_;
+  int width_;
+  int height_;
+  int skip_num_;
+  int border_;
+
+  // Content Metrics: Stores the local average of the metrics.
+  float motion_magnitude_;    // motion class
+  float spatial_pred_err_;    // spatial class
+  float spatial_pred_err_h_;  // spatial class
+  float spatial_pred_err_v_;  // spatial class
+  bool first_frame_;
+  bool ca_Init_;
+
+  VideoContentMetrics* content_metrics_;
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_VIDEO_PROCESSING_CONTENT_ANALYSIS_H_