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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef SERVICES_MEDIA_FRAMEWORK_FFMPEG_FFMPEG_VIDEO_DECODER_H_ | 5 #ifndef SERVICES_MEDIA_FRAMEWORK_FFMPEG_FFMPEG_VIDEO_DECODER_H_ |
6 #define SERVICES_MEDIA_FRAMEWORK_FFMPEG_FFMPEG_VIDEO_DECODER_H_ | 6 #define SERVICES_MEDIA_FRAMEWORK_FFMPEG_FFMPEG_VIDEO_DECODER_H_ |
7 | 7 |
8 #include "services/media/framework_ffmpeg/ffmpeg_decoder_base.h" | 8 #include "services/media/framework_ffmpeg/ffmpeg_decoder_base.h" |
9 | 9 |
10 namespace mojo { | 10 namespace mojo { |
11 namespace media { | 11 namespace media { |
12 | 12 |
13 // Decoder implementation employing and ffmpeg video decoder. | 13 // Decoder implementation employing and ffmpeg video decoder. |
14 // TODO(dalesat): Complete this. | 14 // TODO(dalesat): Complete this. |
15 class FfmpegVideoDecoder : public FfmpegDecoderBase { | 15 class FfmpegVideoDecoder : public FfmpegDecoderBase { |
16 public: | 16 public: |
17 FfmpegVideoDecoder(AvCodecContextPtr av_codec_context); | 17 FfmpegVideoDecoder(AvCodecContextPtr av_codec_context); |
18 | 18 |
19 ~FfmpegVideoDecoder() override; | 19 ~FfmpegVideoDecoder() override; |
20 | 20 |
21 protected: | 21 protected: |
22 // FfmpegDecoderBase overrides. | 22 // FfmpegDecoderBase overrides. |
23 int Decode( | 23 int Decode(const AVPacket& av_packet, |
24 const AVPacket& av_packet, | 24 const ffmpeg::AvFramePtr& av_frame_ptr, |
25 const ffmpeg::AvFramePtr& av_frame_ptr, | 25 PayloadAllocator* allocator, |
26 PayloadAllocator* allocator, | 26 bool* frame_decoded_out) override; |
27 bool* frame_decoded_out) override; | |
28 | 27 |
29 PacketPtr CreateOutputPacket( | 28 PacketPtr CreateOutputPacket(const AVFrame& av_frame, |
30 const AVFrame& av_frame, | 29 PayloadAllocator* allocator) override; |
31 PayloadAllocator* allocator) override; | |
32 | 30 |
33 PacketPtr CreateOutputEndOfStreamPacket() override; | 31 PacketPtr CreateOutputEndOfStreamPacket() override; |
34 | 32 |
35 private: | 33 private: |
36 // Callback used by the ffmpeg decoder to acquire a buffer. | 34 // Callback used by the ffmpeg decoder to acquire a buffer. |
37 static int AllocateBufferForAvFrame( | 35 static int AllocateBufferForAvFrame(AVCodecContext* av_codec_context, |
38 AVCodecContext* av_codec_context, | 36 AVFrame* av_frame, |
39 AVFrame* av_frame, | 37 int flags); |
40 int flags); | |
41 | 38 |
42 // Callback used by the ffmpeg decoder to release a buffer. | 39 // Callback used by the ffmpeg decoder to release a buffer. |
43 static void ReleaseBufferForAvFrame(void* opaque, uint8_t* buffer); | 40 static void ReleaseBufferForAvFrame(void* opaque, uint8_t* buffer); |
44 | 41 |
45 // AllocateBufferForAvFrame deposits the packet size here, because there's | 42 // AllocateBufferForAvFrame deposits the packet size here, because there's |
46 // no good evidence of it after avcodec_decode_audio4 completes. | 43 // no good evidence of it after avcodec_decode_audio4 completes. |
47 uint64_t packet_size_; | 44 uint64_t packet_size_; |
48 | 45 |
49 // This is used to verify that an allocated buffer is being used as expected | 46 // This is used to verify that an allocated buffer is being used as expected |
50 // by ffmpeg avcodec_decode_audio4. AllocateBufferForAvFrame sets it. | 47 // by ffmpeg avcodec_decode_audio4. AllocateBufferForAvFrame sets it. |
51 //void* packet_buffer_; | 48 // void* packet_buffer_; |
52 }; | 49 }; |
53 | 50 |
54 } // namespace media | 51 } // namespace media |
55 } // namespace mojo | 52 } // namespace mojo |
56 | 53 |
57 #endif // SERVICES_MEDIA_FRAMEWORK_FFMPEG_FFMPEG_VIDEO_DECODER_H_ | 54 #endif // SERVICES_MEDIA_FRAMEWORK_FFMPEG_FFMPEG_VIDEO_DECODER_H_ |
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