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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_VPX_VIDEO_DECODER_H_ | 5 #ifndef MEDIA_FILTERS_VPX_VIDEO_DECODER_H_ |
6 #define MEDIA_FILTERS_VPX_VIDEO_DECODER_H_ | 6 #define MEDIA_FILTERS_VPX_VIDEO_DECODER_H_ |
7 | 7 |
8 #include "base/callback.h" | 8 #include "base/callback.h" |
9 #include "base/memory/ref_counted.h" | 9 #include "base/memory/ref_counted.h" |
10 #include "media/base/demuxer_stream.h" | 10 #include "media/base/demuxer_stream.h" |
11 #include "media/base/video_decoder.h" | 11 #include "media/base/video_decoder.h" |
12 #include "media/base/video_frame.h" | |
13 | |
14 // Include libvpx header files. | |
15 // VPX_CODEC_DISABLE_COMPAT excludes parts of the libvpx API that provide | |
16 // backwards compatibility for legacy applications using the library. | |
17 #define VPX_CODEC_DISABLE_COMPAT 1 | |
18 extern "C" { | |
19 #include "third_party/libvpx/source/libvpx/vpx/vpx_decoder.h" | |
20 #include "third_party/libvpx/source/libvpx/vpx/vp8dx.h" | |
21 } | |
12 | 22 |
13 struct vpx_codec_ctx; | 23 struct vpx_codec_ctx; |
14 struct vpx_image; | 24 struct vpx_image; |
15 | 25 |
16 namespace base { | 26 namespace base { |
17 class MessageLoopProxy; | 27 class MessageLoopProxy; |
18 } | 28 } |
19 | 29 |
20 namespace media { | 30 namespace media { |
21 | 31 |
32 struct VpxDeleter { | |
33 inline void operator()(vpx_codec_ctx* ptr) const { | |
34 if (ptr) { | |
35 vpx_codec_destroy(ptr); | |
36 delete ptr; | |
37 } | |
38 } | |
39 }; | |
40 | |
Tom Finegan
2013/02/25 22:56:06
This and the vpx includes above are why there was
| |
22 class MEDIA_EXPORT VpxVideoDecoder : public VideoDecoder { | 41 class MEDIA_EXPORT VpxVideoDecoder : public VideoDecoder { |
23 public: | 42 public: |
24 explicit VpxVideoDecoder( | 43 explicit VpxVideoDecoder( |
25 const scoped_refptr<base::MessageLoopProxy>& message_loop); | 44 const scoped_refptr<base::MessageLoopProxy>& message_loop); |
26 | 45 |
27 // VideoDecoder implementation. | 46 // VideoDecoder implementation. |
28 virtual void Initialize(const scoped_refptr<DemuxerStream>& stream, | 47 virtual void Initialize(const scoped_refptr<DemuxerStream>& stream, |
29 const PipelineStatusCB& status_cb, | 48 const PipelineStatusCB& status_cb, |
30 const StatisticsCB& statistics_cb) OVERRIDE; | 49 const StatisticsCB& statistics_cb) OVERRIDE; |
31 virtual void Read(const ReadCB& read_cb) OVERRIDE; | 50 virtual void Read(const ReadCB& read_cb) OVERRIDE; |
32 virtual void Reset(const base::Closure& closure) OVERRIDE; | 51 virtual void Reset(const base::Closure& closure) OVERRIDE; |
33 virtual void Stop(const base::Closure& closure) OVERRIDE; | 52 virtual void Stop(const base::Closure& closure) OVERRIDE; |
34 | 53 |
35 protected: | 54 protected: |
36 virtual ~VpxVideoDecoder(); | 55 virtual ~VpxVideoDecoder(); |
37 | 56 |
38 private: | 57 private: |
39 enum DecoderState { | 58 enum DecoderState { |
40 kUninitialized, | 59 kUninitialized, |
41 kNormal, | 60 kNormal, |
42 kFlushCodec, | 61 kFlushCodec, |
43 kDecodeFinished | 62 kDecodeFinished |
44 }; | 63 }; |
45 | 64 |
46 // Handles (re-)initializing the decoder with a (new) config. | 65 // Handles (re-)initializing the decoder with a (new) config. |
47 // Returns true when initialization was successful. | 66 // Returns true when initialization was successful. |
48 bool ConfigureDecoder(); | 67 bool ConfigureDecoder(); |
49 | 68 |
50 void CloseDecoder(); | |
51 void ReadFromDemuxerStream(); | 69 void ReadFromDemuxerStream(); |
52 | 70 |
53 // Carries out the buffer processing operation scheduled by | 71 // Carries out the buffer processing operation scheduled by |
54 // DecryptOrDecodeBuffer(). | 72 // DecryptOrDecodeBuffer(). |
55 void DoDecryptOrDecodeBuffer(DemuxerStream::Status status, | 73 void DoDecryptOrDecodeBuffer(DemuxerStream::Status status, |
56 const scoped_refptr<DecoderBuffer>& buffer); | 74 const scoped_refptr<DecoderBuffer>& buffer); |
57 | 75 |
58 void DecodeBuffer(const scoped_refptr<DecoderBuffer>& buffer); | 76 void DecodeBuffer(const scoped_refptr<DecoderBuffer>& buffer); |
59 bool Decode(const scoped_refptr<DecoderBuffer>& buffer, | 77 bool Decode(const scoped_refptr<DecoderBuffer>& buffer, |
60 scoped_refptr<VideoFrame>* video_frame); | 78 scoped_refptr<VideoFrame>* video_frame); |
61 | 79 |
62 // Reset decoder and call |reset_cb_|. | 80 // Reset decoder and call |reset_cb_|. |
63 void DoReset(); | 81 void DoReset(); |
64 | 82 |
65 void CopyVpxImageTo(const vpx_image* vpx_image, | 83 void CopyVpxImageTo(const struct vpx_image* vpx_image, |
84 const struct vpx_image* vpx_image_alpha, | |
66 scoped_refptr<VideoFrame>* video_frame); | 85 scoped_refptr<VideoFrame>* video_frame); |
67 | 86 |
68 scoped_refptr<base::MessageLoopProxy> message_loop_; | 87 scoped_refptr<base::MessageLoopProxy> message_loop_; |
69 | 88 |
70 DecoderState state_; | 89 DecoderState state_; |
71 | 90 |
72 StatisticsCB statistics_cb_; | 91 StatisticsCB statistics_cb_; |
73 ReadCB read_cb_; | 92 ReadCB read_cb_; |
74 base::Closure reset_cb_; | 93 base::Closure reset_cb_; |
75 | 94 |
76 // Pointer to the demuxer stream that will feed us compressed buffers. | 95 // Pointer to the demuxer stream that will feed us compressed buffers. |
77 scoped_refptr<DemuxerStream> demuxer_stream_; | 96 scoped_refptr<DemuxerStream> demuxer_stream_; |
78 | 97 |
79 vpx_codec_ctx* vpx_codec_; | 98 scoped_ptr<vpx_codec_ctx, VpxDeleter> vpx_codec_; |
99 scoped_ptr<vpx_codec_ctx, VpxDeleter> vpx_codec_alpha_; | |
80 | 100 |
81 DISALLOW_COPY_AND_ASSIGN(VpxVideoDecoder); | 101 DISALLOW_COPY_AND_ASSIGN(VpxVideoDecoder); |
82 }; | 102 }; |
83 | 103 |
84 } // namespace media | 104 } // namespace media |
85 | 105 |
86 #endif // MEDIA_FILTERS_VPX_VIDEO_DECODER_H_ | 106 #endif // MEDIA_FILTERS_VPX_VIDEO_DECODER_H_ |
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