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/*
* Copyright (c) 2014 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_CODING_CODECS_VP8_SIMULCAST_ENCODER_ADAPTER_H_
#define WEBRTC_MODULES_VIDEO_CODING_CODECS_VP8_SIMULCAST_ENCODER_ADAPTER_H_
#include <vector>
#include "webrtc/base/scoped_ptr.h"
#include "webrtc/modules/video_coding/codecs/vp8/include/vp8.h"
namespace webrtc {
class VideoEncoderFactory {
public:
virtual VideoEncoder* Create() = 0;
virtual void Destroy(VideoEncoder* encoder) = 0;
virtual ~VideoEncoderFactory() {}
};
// SimulcastEncoderAdapter implements simulcast support by creating multiple
// webrtc::VideoEncoder instances with the given VideoEncoderFactory.
// All the public interfaces are expected to be called from the same thread,
// e.g the encoder thread.
class SimulcastEncoderAdapter : public VP8Encoder {
public:
explicit SimulcastEncoderAdapter(VideoEncoderFactory* factory);
virtual ~SimulcastEncoderAdapter();
// Implements VideoEncoder
int Release() override;
int InitEncode(const VideoCodec* inst,
int number_of_cores,
size_t max_payload_size) override;
int Encode(const VideoFrame& input_image,
const CodecSpecificInfo* codec_specific_info,
const std::vector<FrameType>* frame_types) override;
int RegisterEncodeCompleteCallback(EncodedImageCallback* callback) override;
int SetChannelParameters(uint32_t packet_loss, int64_t rtt) override;
int SetRates(uint32_t new_bitrate_kbit, uint32_t new_framerate) override;
// Eventual handler for the contained encoders' EncodedImageCallbacks, but
// called from an internal helper that also knows the correct stream
// index.
int32_t Encoded(size_t stream_idx,
const EncodedImage& encodedImage,
const CodecSpecificInfo* codecSpecificInfo = NULL,
const RTPFragmentationHeader* fragmentation = NULL);
void OnDroppedFrame() override;
int GetTargetFramerate() override;
bool SupportsNativeHandle() const override;
const char* ImplementationName() const override;
private:
struct StreamInfo {
StreamInfo()
: encoder(NULL),
callback(NULL),
width(0),
height(0),
key_frame_request(false),
send_stream(true) {}
StreamInfo(VideoEncoder* encoder,
EncodedImageCallback* callback,
uint16_t width,
uint16_t height,
bool send_stream)
: encoder(encoder),
callback(callback),
width(width),
height(height),
key_frame_request(false),
send_stream(send_stream) {}
// Deleted by SimulcastEncoderAdapter::Release().
VideoEncoder* encoder;
EncodedImageCallback* callback;
uint16_t width;
uint16_t height;
bool key_frame_request;
bool send_stream;
};
// Get the stream bitrate, for the stream |stream_idx|, given the bitrate
// |new_bitrate_kbit| and the actual configured stream count in
// |total_number_of_streams|. The function also returns whether there's enough
// bandwidth to send this stream via |send_stream|.
uint32_t GetStreamBitrate(int stream_idx,
size_t total_number_of_streams,
uint32_t new_bitrate_kbit,
bool* send_stream) const;
// Populate the codec settings for each stream.
void PopulateStreamCodec(const webrtc::VideoCodec* inst,
int stream_index,
size_t total_number_of_streams,
bool highest_resolution_stream,
webrtc::VideoCodec* stream_codec,
bool* send_stream);
bool Initialized() const;
rtc::scoped_ptr<VideoEncoderFactory> factory_;
rtc::scoped_ptr<Config> screensharing_extra_options_;
VideoCodec codec_;
std::vector<StreamInfo> streaminfos_;
EncodedImageCallback* encoded_complete_callback_;
};
} // namespace webrtc
#endif // WEBRTC_MODULES_VIDEO_CODING_CODECS_VP8_SIMULCAST_ENCODER_ADAPTER_H_
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