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/*
* 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_VIDEO_ENGINE_VIE_CAPTURER_H_
#define WEBRTC_VIDEO_ENGINE_VIE_CAPTURER_H_
#include <vector>
#include "common_types.h" // NOLINT
#include "engine_configurations.h" // NOLINT
#include "webrtc/modules/video_capture/include/video_capture.h"
#include "modules/video_coding/codecs/interface/video_codec_interface.h"
#include "modules/video_coding/main/interface/video_coding.h"
#include "modules/video_processing/main/interface/video_processing.h"
#include "system_wrappers/interface/scoped_ptr.h"
#include "typedefs.h" // NOLINT
#include "video_engine/include/vie_capture.h"
#include "video_engine/vie_defines.h"
#include "video_engine/vie_frame_provider_base.h"
namespace webrtc {
class CriticalSectionWrapper;
class EventWrapper;
class ProcessThread;
class ThreadWrapper;
class ViEEffectFilter;
class ViEEncoder;
struct ViEPicture;
class ViECapturer
: public ViEFrameProviderBase,
public ViEExternalCapture,
protected VCMReceiveCallback,
protected VideoCaptureDataCallback,
protected VideoCaptureFeedBack,
protected VideoEncoder {
public:
static ViECapturer* CreateViECapture(int capture_id,
int engine_id,
VideoCaptureModule* capture_module,
ProcessThread& module_process_thread);
static ViECapturer* CreateViECapture(
int capture_id,
int engine_id,
const char* device_unique_idUTF8,
WebRtc_UWord32 device_unique_idUTF8Length,
ProcessThread& module_process_thread);
~ViECapturer();
// Implements ViEFrameProviderBase.
int FrameCallbackChanged();
virtual int DeregisterFrameCallback(const ViEFrameCallback* callbackObject);
bool IsFrameCallbackRegistered(const ViEFrameCallback* callbackObject);
// Implements ExternalCapture.
virtual int IncomingFrame(unsigned char* video_frame,
unsigned int video_frame_length,
uint16_t width,
uint16_t height,
RawVideoType video_type,
unsigned long long capture_time = 0); // NOLINT
virtual int IncomingFrameI420(const ViEVideoFrameI420& video_frame,
unsigned long long capture_time = 0); // NOLINT
// Use this capture device as encoder.
// Returns 0 if the codec is supported by this capture device.
virtual WebRtc_Word32 PreEncodeToViEEncoder(const VideoCodec& codec,
ViEEncoder& vie_encoder,
WebRtc_Word32 vie_encoder_id);
// Start/Stop.
WebRtc_Word32 Start(
const CaptureCapability& capture_capability = CaptureCapability());
WebRtc_Word32 Stop();
bool Started();
// Overrides the capture delay.
WebRtc_Word32 SetCaptureDelay(WebRtc_Word32 delay_ms);
// Sets rotation of the incoming captured frame.
WebRtc_Word32 SetRotateCapturedFrames(const RotateCapturedFrame rotation);
// Effect filter.
WebRtc_Word32 RegisterEffectFilter(ViEEffectFilter* effect_filter);
WebRtc_Word32 EnableDenoising(bool enable);
WebRtc_Word32 EnableDeflickering(bool enable);
WebRtc_Word32 EnableBrightnessAlarm(bool enable);
// Statistics observer.
WebRtc_Word32 RegisterObserver(ViECaptureObserver* observer);
WebRtc_Word32 DeRegisterObserver();
bool IsObserverRegistered();
// Information.
const char* CurrentDeviceName() const;
protected:
ViECapturer(int capture_id,
int engine_id,
ProcessThread& module_process_thread);
WebRtc_Word32 Init(VideoCaptureModule* capture_module);
WebRtc_Word32 Init(const char* device_unique_idUTF8,
const WebRtc_UWord32 device_unique_idUTF8Length);
// Implements VideoCaptureDataCallback.
virtual void OnIncomingCapturedFrame(const WebRtc_Word32 id,
I420VideoFrame& video_frame);
virtual void OnIncomingCapturedEncodedFrame(const WebRtc_Word32 capture_id,
VideoFrame& video_frame,
VideoCodecType codec_type);
virtual void OnCaptureDelayChanged(const WebRtc_Word32 id,
const WebRtc_Word32 delay);
bool EncoderActive();
// Returns true if the capture capability has been set in |StartCapture|
// function and may not be changed.
bool CaptureCapabilityFixed();
// Help function used for keeping track of VideoImageProcesingModule.
// Creates the module if it is needed, returns 0 on success and guarantees
// that the image proc module exist.
WebRtc_Word32 IncImageProcRefCount();
WebRtc_Word32 DecImageProcRefCount();
// Implements VideoEncoder.
virtual WebRtc_Word32 Version(char* version,
WebRtc_Word32 length) const;
virtual WebRtc_Word32 InitEncode(const VideoCodec* codec_settings,
WebRtc_Word32 number_of_cores,
WebRtc_UWord32 max_payload_size);
virtual WebRtc_Word32 Encode(const I420VideoFrame& input_image,
const CodecSpecificInfo* codec_specific_info,
const std::vector<VideoFrameType>* frame_types);
virtual WebRtc_Word32 RegisterEncodeCompleteCallback(
EncodedImageCallback* callback);
virtual WebRtc_Word32 Release();
virtual WebRtc_Word32 Reset();
virtual WebRtc_Word32 SetChannelParameters(WebRtc_UWord32 packet_loss,
int rtt);
virtual WebRtc_Word32 SetRates(WebRtc_UWord32 new_bit_rate,
WebRtc_UWord32 frame_rate);
// Implements VCMReceiveCallback.
// TODO(mflodman) Change input argument to pointer.
virtual WebRtc_Word32 FrameToRender(I420VideoFrame& video_frame); // NOLINT
// Implements VideoCaptureFeedBack
virtual void OnCaptureFrameRate(const WebRtc_Word32 id,
const WebRtc_UWord32 frame_rate);
virtual void OnNoPictureAlarm(const WebRtc_Word32 id,
const VideoCaptureAlarm alarm);
// Thread functions for deliver captured frames to receivers.
static bool ViECaptureThreadFunction(void* obj);
bool ViECaptureProcess();
void DeliverI420Frame(I420VideoFrame* video_frame);
void DeliverCodedFrame(VideoFrame* video_frame);
private:
// Never take capture_cs_ before deliver_cs_!
scoped_ptr<CriticalSectionWrapper> capture_cs_;
scoped_ptr<CriticalSectionWrapper> deliver_cs_;
VideoCaptureModule* capture_module_;
VideoCaptureExternal* external_capture_module_;
ProcessThread& module_process_thread_;
const int capture_id_;
// Capture thread.
ThreadWrapper& capture_thread_;
EventWrapper& capture_event_;
EventWrapper& deliver_event_;
I420VideoFrame captured_frame_;
I420VideoFrame deliver_frame_;
VideoFrame deliver_encoded_frame_;
VideoFrame encoded_frame_;
// Image processing.
ViEEffectFilter* effect_filter_;
VideoProcessingModule* image_proc_module_;
int image_proc_module_ref_counter_;
VideoProcessingModule::FrameStats* deflicker_frame_stats_;
VideoProcessingModule::FrameStats* brightness_frame_stats_;
Brightness current_brightness_level_;
Brightness reported_brightness_level_;
bool denoising_enabled_;
// Statistics observer.
scoped_ptr<CriticalSectionWrapper> observer_cs_;
ViECaptureObserver* observer_;
// Encoding using encoding capable cameras.
scoped_ptr<CriticalSectionWrapper> encoding_cs_;
VideoCaptureModule::VideoCaptureEncodeInterface* capture_encoder_;
EncodedImageCallback* encode_complete_callback_;
VideoCodec codec_;
// The ViEEncoder we are encoding for.
ViEEncoder* vie_encoder_;
// ViEEncoder id we are encoding for.
WebRtc_Word32 vie_encoder_id_;
// Used for decoding preencoded frames.
VideoCodingModule* vcm_;
EncodedVideoData decode_buffer_;
bool decoder_initialized_;
CaptureCapability requested_capability_;
I420VideoFrame capture_device_image_;
};
} // namespace webrtc
#endif // WEBRTC_VIDEO_ENGINE_VIE_CAPTURER_H_
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