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| 1 /* | |
| 2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 * | |
| 10 */ | |
| 11 | |
| 12 #ifndef WEBRTC_SDK_OBJC_FRAMEWORK_CLASSES_H264_VIDEO_TOOLBOX_DECODER_H_ | |
| 13 #define WEBRTC_SDK_OBJC_FRAMEWORK_CLASSES_H264_VIDEO_TOOLBOX_DECODER_H_ | |
| 14 | |
| 15 #include "webrtc/modules/video_coding/codecs/h264/include/h264.h" | |
| 16 | |
| 17 #include <VideoToolbox/VideoToolbox.h> | |
| 18 | |
| 19 // This file provides a H264 encoder implementation using the VideoToolbox | |
| 20 // APIs. Since documentation is almost non-existent, this is largely based on | |
| 21 // the information in the VideoToolbox header files, a talk from WWDC 2014 and | |
| 22 // experimentation. | |
| 23 | |
| 24 namespace webrtc { | |
| 25 | |
| 26 class H264VideoToolboxDecoder : public H264Decoder { | |
| 27 public: | |
| 28 H264VideoToolboxDecoder(); | |
| 29 | |
| 30 ~H264VideoToolboxDecoder() override; | |
| 31 | |
| 32 int InitDecode(const VideoCodec* video_codec, int number_of_cores) override; | |
| 33 | |
| 34 int Decode(const EncodedImage& input_image, | |
| 35 bool missing_frames, | |
| 36 const RTPFragmentationHeader* fragmentation, | |
| 37 const CodecSpecificInfo* codec_specific_info, | |
| 38 int64_t render_time_ms) override; | |
| 39 | |
| 40 int RegisterDecodeCompleteCallback(DecodedImageCallback* callback) override; | |
| 41 | |
| 42 int Release() override; | |
| 43 | |
| 44 const char* ImplementationName() const override; | |
| 45 | |
| 46 private: | |
| 47 int ResetDecompressionSession(); | |
| 48 void ConfigureDecompressionSession(); | |
| 49 void DestroyDecompressionSession(); | |
| 50 void SetVideoFormat(CMVideoFormatDescriptionRef video_format); | |
| 51 | |
| 52 DecodedImageCallback* callback_; | |
| 53 CMVideoFormatDescriptionRef video_format_; | |
| 54 VTDecompressionSessionRef decompression_session_; | |
| 55 }; // H264VideoToolboxDecoder | |
| 56 | |
| 57 } // namespace webrtc | |
| 58 | |
| 59 #endif // WEBRTC_SDK_OBJC_FRAMEWORK_CLASSES_H264_VIDEO_TOOLBOX_DECODER_H_ | |
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