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/*
* Copyright (c) 2015 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_CODING_CODECS_H264_H264_ENCODER_IMPL_H_
#define MODULES_VIDEO_CODING_CODECS_H264_H264_ENCODER_IMPL_H_
// Everything declared in this header is only required when WebRTC is
// build with H264 support, please do not move anything out of the
// #ifdef unless needed and tested.
#ifdef WEBRTC_USE_H264
#if defined(WEBRTC_WIN) && !defined(__clang__)
#error "See: bugs.webrtc.org/9213#c13."
#endif
#include <memory>
#include <vector>
#include "absl/container/inlined_vector.h"
#include "api/transport/rtp/dependency_descriptor.h"
#include "api/video/i420_buffer.h"
#include "api/video/video_codec_constants.h"
#include "api/video_codecs/scalability_mode.h"
#include "api/video_codecs/video_encoder.h"
#include "common_video/h264/h264_bitstream_parser.h"
#include "modules/video_coding/codecs/h264/include/h264.h"
#include "modules/video_coding/svc/scalable_video_controller.h"
#include "modules/video_coding/utility/quality_scaler.h"
#include "third_party/openh264/src/codec/api/wels/codec_app_def.h"
class ISVCEncoder;
namespace webrtc {
class H264EncoderImpl : public VideoEncoder {
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;
int num_temporal_layers = 1;
void SetStreamState(bool send_stream);
};
H264EncoderImpl(const Environment& env, H264EncoderSettings settings);
~H264EncoderImpl() override;
// `settings.max_payload_size` is ignored.
// The following members of `codec_settings` are used. The rest are ignored.
// - codecType (must be kVideoCodecH264)
// - targetBitrate
// - maxFramerate
// - width
// - height
int32_t InitEncode(const VideoCodec* codec_settings,
const VideoEncoder::Settings& settings) override;
int32_t Release() override;
int32_t RegisterEncodeCompleteCallback(
EncodedImageCallback* callback) override;
void SetRates(const RateControlParameters& parameters) override;
// The result of encoding - an EncodedImage and CodecSpecificInfo - are
// passed to the encode complete callback.
int32_t Encode(const VideoFrame& frame,
const std::vector<VideoFrameType>* frame_types) override;
EncoderInfo GetEncoderInfo() const override;
// Exposed for testing.
H264PacketizationMode PacketizationModeForTesting() const {
return packetization_mode_;
}
private:
SEncParamExt CreateEncoderParams(size_t i) const;
webrtc::H264BitstreamParser h264_bitstream_parser_;
// Reports statistics with histograms.
void ReportInit();
void ReportError();
std::vector<ISVCEncoder*> encoders_;
std::vector<SSourcePicture> pictures_;
std::vector<webrtc::scoped_refptr<I420Buffer>> downscaled_buffers_;
std::vector<LayerConfig> configurations_;
std::vector<EncodedImage> encoded_images_;
std::vector<std::unique_ptr<ScalableVideoController>> svc_controllers_;
absl::InlinedVector<std::optional<ScalabilityMode>, kMaxSimulcastStreams>
scalability_modes_;
const Environment env_;
VideoCodec codec_;
H264PacketizationMode packetization_mode_;
size_t max_payload_size_;
int32_t number_of_cores_;
std::optional<int> encoder_thread_limit_;
EncodedImageCallback* encoded_image_callback_;
bool has_reported_init_;
bool has_reported_error_;
std::vector<uint8_t> tl0sync_limit_;
};
} // namespace webrtc
#endif // WEBRTC_USE_H264
#endif // MODULES_VIDEO_CODING_CODECS_H264_H264_ENCODER_IMPL_H_
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