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| 1 /* | 1 /* |
| 2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 * | 9 * |
| 10 */ | 10 */ |
| 11 | 11 |
| 12 #ifndef WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_H264_VIDEO_TOOLBOX_NALU_H | 12 #ifndef WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_H264_VIDEO_TOOLBOX_NALU_H_ |
| 13 #define WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_H264_VIDEO_TOOLBOX_NALU_H | 13 #define WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_H264_VIDEO_TOOLBOX_NALU_H_ |
| 14 | 14 |
| 15 #include "webrtc/modules/video_coding/codecs/h264/include/h264.h" | 15 #include "webrtc/modules/video_coding/codecs/h264/include/h264.h" |
| 16 | 16 |
| 17 #if defined(WEBRTC_VIDEO_TOOLBOX_SUPPORTED) | 17 #if defined(WEBRTC_VIDEO_TOOLBOX_SUPPORTED) |
| 18 | 18 |
| 19 #include <CoreMedia/CoreMedia.h> | 19 #include <CoreMedia/CoreMedia.h> |
| 20 | 20 |
| 21 #include "webrtc/base/buffer.h" | 21 #include "webrtc/base/buffer.h" |
| 22 #include "webrtc/modules/include/module_common_types.h" | 22 #include "webrtc/modules/include/module_common_types.h" |
| 23 | 23 |
| 24 namespace webrtc { | 24 namespace webrtc { |
| 25 | 25 |
| 26 // Converts a sample buffer emitted from the VideoToolbox encoder into a buffer | 26 // Converts a sample buffer emitted from the VideoToolbox encoder into a buffer |
| 27 // suitable for RTP. The sample buffer is in avcc format whereas the rtp buffer | 27 // suitable for RTP. The sample buffer is in avcc format whereas the rtp buffer |
| 28 // needs to be in Annex B format. Data is written directly to |annexb_buffer| | 28 // needs to be in Annex B format. Data is written directly to |annexb_buffer| |
| 29 // and a new RTPFragmentationHeader is returned in |out_header|. | 29 // and a new RTPFragmentationHeader is returned in |out_header|. |
| 30 bool H264CMSampleBufferToAnnexBBuffer( | 30 bool H264CMSampleBufferToAnnexBBuffer( |
| 31 CMSampleBufferRef avcc_sample_buffer, | 31 CMSampleBufferRef avcc_sample_buffer, |
| 32 bool is_keyframe, | 32 bool is_keyframe, |
| 33 rtc::Buffer* annexb_buffer, | 33 rtc::Buffer* annexb_buffer, |
| 34 webrtc::RTPFragmentationHeader** out_header); | 34 webrtc::RTPFragmentationHeader** out_header); |
| 35 | 35 |
| 36 // Converts a buffer received from RTP into a sample buffer suitable for the | 36 // Converts a buffer received from RTP into a sample buffer suitable for the |
| 37 // VideoToolbox decoder. The RTP buffer is in annex b format whereas the sample | 37 // VideoToolbox decoder. The RTP buffer is in annex b format whereas the sample |
| 38 // buffer is in avcc format. | 38 // buffer is in avcc format. |
| 39 // If |is_keyframe| is true then |video_format| is ignored since the format will | 39 // If |is_keyframe| is true then |video_format| is ignored since the format will |
| 40 // be read from the buffer. Otherwise |video_format| must be provided. | 40 // be read from the buffer. Otherwise |video_format| must be provided. |
| 41 // Caller is responsible for releasing the created sample buffer. | 41 // Caller is responsible for releasing the created sample buffer. |
| 42 bool H264AnnexBBufferToCMSampleBuffer( | 42 bool H264AnnexBBufferToCMSampleBuffer(const uint8_t* annexb_buffer, |
| 43 const uint8_t* annexb_buffer, | 43 size_t annexb_buffer_size, |
| 44 size_t annexb_buffer_size, | 44 CMVideoFormatDescriptionRef video_format, |
| 45 CMVideoFormatDescriptionRef video_format, | 45 CMSampleBufferRef* out_sample_buffer); |
| 46 CMSampleBufferRef* out_sample_buffer); | |
| 47 | 46 |
| 48 // Helper class for reading NALUs from an RTP Annex B buffer. | 47 // Helper class for reading NALUs from an RTP Annex B buffer. |
| 49 class AnnexBBufferReader final { | 48 class AnnexBBufferReader final { |
| 50 public: | 49 public: |
| 51 AnnexBBufferReader(const uint8_t* annexb_buffer, size_t length); | 50 AnnexBBufferReader(const uint8_t* annexb_buffer, size_t length); |
| 52 ~AnnexBBufferReader() {} | 51 ~AnnexBBufferReader() {} |
| 53 AnnexBBufferReader(const AnnexBBufferReader& other) = delete; | 52 AnnexBBufferReader(const AnnexBBufferReader& other) = delete; |
| 54 void operator=(const AnnexBBufferReader& other) = delete; | 53 void operator=(const AnnexBBufferReader& other) = delete; |
| 55 | 54 |
| 56 // Returns a pointer to the beginning of the next NALU slice without the | 55 // Returns a pointer to the beginning of the next NALU slice without the |
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| 90 | 89 |
| 91 private: | 90 private: |
| 92 uint8_t* const start_; | 91 uint8_t* const start_; |
| 93 size_t offset_; | 92 size_t offset_; |
| 94 const size_t length_; | 93 const size_t length_; |
| 95 }; | 94 }; |
| 96 | 95 |
| 97 } // namespace webrtc | 96 } // namespace webrtc |
| 98 | 97 |
| 99 #endif // defined(WEBRTC_VIDEO_TOOLBOX_SUPPORTED) | 98 #endif // defined(WEBRTC_VIDEO_TOOLBOX_SUPPORTED) |
| 100 #endif // WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_H264_VIDEO_TOOLBOX_NALU_H | 99 #endif // WEBRTC_MODULES_VIDEO_CODING_CODECS_H264_H264_VIDEO_TOOLBOX_NALU_H_ |
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