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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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