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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_MODULES_VIDEO_CODING_CODECS_H264_H264_VIDEO_TOOLBOX_DECODER_H_ | |
13 #define WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_H264_VIDEO_TOOLBOX_DECODER_H_ | |
14 | |
15 #include "webrtc/modules/video_coding/codecs/h264/include/h264.h" | |
16 | |
17 #if defined(WEBRTC_VIDEO_TOOLBOX_SUPPORTED) | |
18 | |
19 #include <VideoToolbox/VideoToolbox.h> | |
20 | |
21 // This file provides a H264 encoder implementation using the VideoToolbox | |
22 // APIs. Since documentation is almost non-existent, this is largely based on | |
23 // the information in the VideoToolbox header files, a talk from WWDC 2014 and | |
24 // experimentation. | |
25 | |
26 namespace webrtc { | |
27 | |
28 class H264VideoToolboxDecoder : public H264Decoder { | |
29 public: | |
30 H264VideoToolboxDecoder(); | |
31 | |
32 ~H264VideoToolboxDecoder() override; | |
33 | |
34 int InitDecode(const VideoCodec* video_codec, int number_of_cores) override; | |
35 | |
36 int Decode(const EncodedImage& input_image, | |
37 bool missing_frames, | |
38 const RTPFragmentationHeader* fragmentation, | |
39 const CodecSpecificInfo* codec_specific_info, | |
40 int64_t render_time_ms) override; | |
41 | |
42 int RegisterDecodeCompleteCallback(DecodedImageCallback* callback) override; | |
43 | |
44 int Release() override; | |
45 | |
46 const char* ImplementationName() const override; | |
47 | |
48 private: | |
49 int ResetDecompressionSession(); | |
50 void ConfigureDecompressionSession(); | |
51 void DestroyDecompressionSession(); | |
52 void SetVideoFormat(CMVideoFormatDescriptionRef video_format); | |
53 | |
54 DecodedImageCallback* callback_; | |
55 CMVideoFormatDescriptionRef video_format_; | |
56 VTDecompressionSessionRef decompression_session_; | |
57 }; // H264VideoToolboxDecoder | |
58 | |
59 } // namespace webrtc | |
60 | |
61 #endif // defined(WEBRTC_VIDEO_TOOLBOX_SUPPORTED) | |
62 #endif // WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_H264_VIDEO_TOOLBOX_DECODER_H_ | |
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