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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_DECODER_H_
#define WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_H264_VIDEO_TOOLBOX_DECODER_H_
#include "webrtc/modules/video_coding/codecs/h264/include/h264.h"
#if defined(WEBRTC_VIDEO_TOOLBOX_SUPPORTED)
#include <VideoToolbox/VideoToolbox.h>
// 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 H264VideoToolboxDecoder : public H264Decoder {
public:
H264VideoToolboxDecoder();
~H264VideoToolboxDecoder() override;
int InitDecode(const VideoCodec* video_codec, int number_of_cores) override;
int Decode(const EncodedImage& input_image,
bool missing_frames,
const RTPFragmentationHeader* fragmentation,
const CodecSpecificInfo* codec_specific_info,
int64_t render_time_ms) override;
int RegisterDecodeCompleteCallback(DecodedImageCallback* callback) override;
int Release() override;
int Reset() override;
const char* ImplementationName() const override;
private:
int ResetDecompressionSession();
void ConfigureDecompressionSession();
void DestroyDecompressionSession();
void SetVideoFormat(CMVideoFormatDescriptionRef video_format);
DecodedImageCallback* callback_;
CMVideoFormatDescriptionRef video_format_;
VTDecompressionSessionRef decompression_session_;
}; // H264VideoToolboxDecoder
} // namespace webrtc
#endif // defined(WEBRTC_VIDEO_TOOLBOX_SUPPORTED)
#endif // WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_H264_VIDEO_TOOLBOX_DECODER_H_
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