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Implement H264 simulcast support and generalize SimulcastEncoderAdapter use for H264 & VP8.

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* Move SimulcastEncoderAdapter out under modules/video_coding
* Move SimulcastRateAllocator back out to modules/video_coding/utility
* Move TemporalLayers and ScreenshareLayers to modules/video_coding/utility
* Move any VP8 specific code - such as temporal layer bitrate budgeting -
  under codec type dependent conditionals.
* Plumb the simulcast index for H264 in the codec specific and RTP format data structures.

Bug: webrtc:5840
Change-Id: Ieced8a00e38f273c1a6cfd0f5431a87d07b8f44e
Reviewed-on: https://webrtc-review.googlesource.com/64100
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23705}
This commit is contained in:
Sergio Garcia Murillo
2018-06-21 13:29:29 +02:00
committed by Commit Bot
parent 80c4cca491
commit 07efe436c9
51 changed files with 918 additions and 530 deletions
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43
modules/video_coding/codecs/h264/h264_encoder_impl.h
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@ -15,6 +15,7 @@
#include <memory>
#include <vector>
#include "api/video/i420_buffer.h"
#include "common_video/h264/h264_bitstream_parser.h"
#include "modules/video_coding/codecs/h264/include/h264.h"
#include "modules/video_coding/utility/quality_scaler.h"
@ -26,6 +27,22 @@ class ISVCEncoder;
namespace webrtc {
class H264EncoderImpl : public H264Encoder {
public:
struct LayerConfig {
int simulcast_idx = 0;
int width = -1;
int height = -1;
bool sending = true;
bool key_frame_request = false;
float max_frame_rate = 0;
uint32_t target_bps = 0;
uint32_t max_bps = 0;
bool frame_dropping_on = false;
int key_frame_interval = 0;
void SetStreamState(bool send_stream);
};
public:
explicit H264EncoderImpl(const cricket::VideoCodec& codec);
~H264EncoderImpl() override;
@ -66,32 +83,24 @@ class H264EncoderImpl : public H264Encoder {
}
private:
bool IsInitialized() const;
SEncParamExt CreateEncoderParams() const;
SEncParamExt CreateEncoderParams(size_t i) const;
webrtc::H264BitstreamParser h264_bitstream_parser_;
// Reports statistics with histograms.
void ReportInit();
void ReportError();
ISVCEncoder* openh264_encoder_;
// Settings that are used by this encoder.
int width_;
int height_;
float max_frame_rate_;
uint32_t target_bps_;
uint32_t max_bps_;
VideoCodecMode mode_;
// H.264 specifc parameters
bool frame_dropping_on_;
int key_frame_interval_;
H264PacketizationMode packetization_mode_;
std::vector<ISVCEncoder*> encoders_;
std::vector<SSourcePicture> pictures_;
std::vector<rtc::scoped_refptr<I420Buffer>> downscaled_buffers_;
std::vector<LayerConfig> configurations_;
std::vector<EncodedImage> encoded_images_;
std::vector<std::unique_ptr<uint8_t[]>> encoded_image_buffers_;
VideoCodec codec_;
H264PacketizationMode packetization_mode_;
size_t max_payload_size_;
int32_t number_of_cores_;
EncodedImage encoded_image_;
std::unique_ptr<uint8_t[]> encoded_image_buffer_;
EncodedImageCallback* encoded_image_callback_;
bool has_reported_init_;