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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 WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_H264_VIDEO_TOOLBOX_ENCODER_H_
#define WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_H264_VIDEO_TOOLBOX_ENCODER_H_
#include "webrtc/modules/video_coding/codecs/h264/include/h264.h"
#if defined(WEBRTC_VIDEO_TOOLBOX_SUPPORTED)
#include <VideoToolbox/VideoToolbox.h>
#include <vector>
// This file provides a H264 encoder implementation using the VideoToolbox
// APIs. Since documentation is almost non-existent, this is largely based on
// the information in the VideoToolbox header files, a talk from WWDC 2014 and
// experimentation.
namespace webrtc {
class H264VideoToolboxEncoder : public H264Encoder {
public:
H264VideoToolboxEncoder();
~H264VideoToolboxEncoder() override;
int InitEncode(const VideoCodec* codec_settings,
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 frame_rate) override;
int Release() override;
const char* ImplementationName() const override;
private:
int ResetCompressionSession();
void ConfigureCompressionSession();
void DestroyCompressionSession();
webrtc::EncodedImageCallback* callback_;
VTCompressionSessionRef compression_session_;
int32_t bitrate_; // Bitrate in bits per second.
int32_t width_;
int32_t height_;
}; // H264VideoToolboxEncoder
} // namespace webrtc
#endif // defined(WEBRTC_VIDEO_TOOLBOX_SUPPORTED)
#endif // WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_H264_VIDEO_TOOLBOX_ENCODER_H_
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