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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 MEDIA_FILTERS_FFMPEG_VIDEO_DECODER_H_ | 5 #ifndef MEDIA_FILTERS_FFMPEG_VIDEO_DECODER_H_ |
6 #define MEDIA_FILTERS_FFMPEG_VIDEO_DECODER_H_ | 6 #define MEDIA_FILTERS_FFMPEG_VIDEO_DECODER_H_ |
7 | 7 |
8 #include <list> | 8 #include <list> |
9 | 9 |
10 #include "base/callback.h" | 10 #include "base/callback.h" |
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31 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner); | 31 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner); |
32 virtual ~FFmpegVideoDecoder(); | 32 virtual ~FFmpegVideoDecoder(); |
33 | 33 |
34 // Allow decoding of individual NALU. Entire frames are required by default. | 34 // Allow decoding of individual NALU. Entire frames are required by default. |
35 // Disables low-latency mode. Must be called before Initialize(). | 35 // Disables low-latency mode. Must be called before Initialize(). |
36 void set_decode_nalus(bool decode_nalus) { decode_nalus_ = decode_nalus; } | 36 void set_decode_nalus(bool decode_nalus) { decode_nalus_ = decode_nalus; } |
37 | 37 |
38 // VideoDecoder implementation. | 38 // VideoDecoder implementation. |
39 virtual void Initialize(const VideoDecoderConfig& config, | 39 virtual void Initialize(const VideoDecoderConfig& config, |
40 bool low_delay, | 40 bool low_delay, |
41 const PipelineStatusCB& status_cb) OVERRIDE; | 41 const PipelineStatusCB& status_cb, |
| 42 const OutputCB& output_cb) OVERRIDE; |
42 virtual void Decode(const scoped_refptr<DecoderBuffer>& buffer, | 43 virtual void Decode(const scoped_refptr<DecoderBuffer>& buffer, |
43 const DecodeCB& decode_cb) OVERRIDE; | 44 const DecodeCB& decode_cb) OVERRIDE; |
44 virtual void Reset(const base::Closure& closure) OVERRIDE; | 45 virtual void Reset(const base::Closure& closure) OVERRIDE; |
45 virtual void Stop() OVERRIDE; | 46 virtual void Stop() OVERRIDE; |
46 | 47 |
47 // Callback called from within FFmpeg to allocate a buffer based on | 48 // Callback called from within FFmpeg to allocate a buffer based on |
48 // the dimensions of |codec_context|. See AVCodecContext.get_buffer2 | 49 // the dimensions of |codec_context|. See AVCodecContext.get_buffer2 |
49 // documentation inside FFmpeg. | 50 // documentation inside FFmpeg. |
50 int GetVideoBuffer(struct AVCodecContext* codec_context, | 51 int GetVideoBuffer(struct AVCodecContext* codec_context, |
51 AVFrame* frame, | 52 AVFrame* frame, |
52 int flags); | 53 int flags); |
53 | 54 |
54 private: | 55 private: |
55 enum DecoderState { | 56 enum DecoderState { |
56 kUninitialized, | 57 kUninitialized, |
57 kNormal, | 58 kNormal, |
58 kFlushCodec, | |
59 kDecodeFinished, | 59 kDecodeFinished, |
60 kError | 60 kError |
61 }; | 61 }; |
62 | 62 |
63 // Handles decoding an unencrypted encoded buffer. | 63 // Handles decoding an unencrypted encoded buffer. |
64 void DecodeBuffer(const scoped_refptr<DecoderBuffer>& buffer); | |
65 bool FFmpegDecode(const scoped_refptr<DecoderBuffer>& buffer, | 64 bool FFmpegDecode(const scoped_refptr<DecoderBuffer>& buffer, |
66 scoped_refptr<VideoFrame>* video_frame); | 65 bool* produced_frame); |
67 | 66 |
68 // Handles (re-)initializing the decoder with a (new) config. | 67 // Handles (re-)initializing the decoder with a (new) config. |
69 // Returns true if initialization was successful. | 68 // Returns true if initialization was successful. |
70 bool ConfigureDecoder(bool low_delay); | 69 bool ConfigureDecoder(bool low_delay); |
71 | 70 |
72 // Releases resources associated with |codec_context_| and |av_frame_| | 71 // Releases resources associated with |codec_context_| and |av_frame_| |
73 // and resets them to NULL. | 72 // and resets them to NULL. |
74 void ReleaseFFmpegResources(); | 73 void ReleaseFFmpegResources(); |
75 | 74 |
76 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; | 75 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; |
77 | 76 |
78 DecoderState state_; | 77 DecoderState state_; |
79 | 78 |
80 // TODO(xhwang): Merge DecodeBuffer() into Decode() and remove this. | 79 OutputCB output_cb_; |
81 DecodeCB decode_cb_; | |
82 | 80 |
83 // FFmpeg structures owned by this object. | 81 // FFmpeg structures owned by this object. |
84 scoped_ptr<AVCodecContext, ScopedPtrAVFreeContext> codec_context_; | 82 scoped_ptr<AVCodecContext, ScopedPtrAVFreeContext> codec_context_; |
85 scoped_ptr<AVFrame, ScopedPtrAVFreeFrame> av_frame_; | 83 scoped_ptr<AVFrame, ScopedPtrAVFreeFrame> av_frame_; |
86 | 84 |
87 VideoDecoderConfig config_; | 85 VideoDecoderConfig config_; |
88 | 86 |
89 VideoFramePool frame_pool_; | 87 VideoFramePool frame_pool_; |
90 | 88 |
91 bool decode_nalus_; | 89 bool decode_nalus_; |
92 | 90 |
93 DISALLOW_COPY_AND_ASSIGN(FFmpegVideoDecoder); | 91 DISALLOW_COPY_AND_ASSIGN(FFmpegVideoDecoder); |
94 }; | 92 }; |
95 | 93 |
96 } // namespace media | 94 } // namespace media |
97 | 95 |
98 #endif // MEDIA_FILTERS_FFMPEG_VIDEO_DECODER_H_ | 96 #endif // MEDIA_FILTERS_FFMPEG_VIDEO_DECODER_H_ |
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