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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/macros.h" | 9 #include "base/macros.h" |
10 #include "base/threading/thread_checker.h" | 10 #include "base/threading/thread_checker.h" |
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48 | 48 |
49 private: | 49 private: |
50 enum DecoderState { | 50 enum DecoderState { |
51 kUninitialized, | 51 kUninitialized, |
52 kNormal, | 52 kNormal, |
53 kFlushCodec, | 53 kFlushCodec, |
54 kDecodeFinished, | 54 kDecodeFinished, |
55 kError | 55 kError |
56 }; | 56 }; |
57 | 57 |
58 // Return values for decoding alpha plane. | |
59 enum AlphaDecodeStatus { | |
60 kAlphaPlaneProcessed, // Alpha plane (if found) was decoded successfully. | |
61 kNoAlphaPlaneData, // Alpha plane was found, but decoder did not return any | |
62 // data. | |
63 kAlphaPlaneError // Fatal error occured when trying to decode alpha plane. | |
64 }; | |
65 | |
66 // Handles (re-)initializing the decoder with a (new) config. | 58 // Handles (re-)initializing the decoder with a (new) config. |
67 // Returns true when initialization was successful. | 59 // Returns true when initialization was successful. |
68 bool ConfigureDecoder(const VideoDecoderConfig& config); | 60 bool ConfigureDecoder(const VideoDecoderConfig& config); |
69 | 61 |
70 void CloseDecoder(); | 62 void CloseDecoder(); |
71 | 63 |
72 // Try to decode |buffer| into |video_frame|. Return true if all decoding | 64 // Try to decode |buffer| into |video_frame|. Return true if all decoding |
73 // succeeded. Note that decoding can succeed and still |video_frame| be | 65 // succeeded. Note that decoding can succeed and still |video_frame| be |
74 // nullptr if there has been a partial decoding. | 66 // nullptr if there has been a partial decoding. |
75 bool VpxDecode(const scoped_refptr<DecoderBuffer>& buffer, | 67 bool VpxDecode(const scoped_refptr<DecoderBuffer>& buffer, |
76 scoped_refptr<VideoFrame>* video_frame); | 68 scoped_refptr<VideoFrame>* video_frame); |
77 | 69 |
78 bool CopyVpxImageToVideoFrame(const struct vpx_image* vpx_image, | 70 bool CopyVpxImageToVideoFrame(const struct vpx_image* vpx_image, |
79 const struct vpx_image* vpx_image_alpha, | |
80 scoped_refptr<VideoFrame>* video_frame); | 71 scoped_refptr<VideoFrame>* video_frame); |
81 | 72 |
82 AlphaDecodeStatus DecodeAlphaPlane( | |
83 const struct vpx_image* vpx_image, | |
84 const struct vpx_image** vpx_image_alpha, | |
85 const scoped_refptr<DecoderBuffer>& buffer); | |
86 | |
87 base::ThreadChecker thread_checker_; | 73 base::ThreadChecker thread_checker_; |
88 | 74 |
89 DecoderState state_; | 75 DecoderState state_; |
90 | 76 |
91 OutputCB output_cb_; | 77 OutputCB output_cb_; |
92 | 78 |
93 VideoDecoderConfig config_; | 79 VideoDecoderConfig config_; |
94 | 80 |
95 vpx_codec_ctx* vpx_codec_; | 81 vpx_codec_ctx* vpx_codec_; |
96 vpx_codec_ctx* vpx_codec_alpha_; | 82 vpx_codec_ctx* vpx_codec_alpha_; |
97 | 83 |
98 // |memory_pool_| is a single-threaded memory pool used for VP9 decoding | 84 // |memory_pool_| is a single-threaded memory pool used for VP9 decoding |
99 // with no alpha. |frame_pool_| is used for all other cases. | 85 // with no alpha. |frame_pool_| is used for all other cases. |
100 class MemoryPool; | 86 class MemoryPool; |
101 scoped_refptr<MemoryPool> memory_pool_; | 87 scoped_refptr<MemoryPool> memory_pool_; |
102 | 88 |
103 VideoFramePool frame_pool_; | 89 VideoFramePool frame_pool_; |
104 | 90 |
105 DISALLOW_COPY_AND_ASSIGN(VpxVideoDecoder); | 91 DISALLOW_COPY_AND_ASSIGN(VpxVideoDecoder); |
106 }; | 92 }; |
107 | 93 |
108 } // namespace media | 94 } // namespace media |
109 | 95 |
110 #endif // MEDIA_FILTERS_VPX_VIDEO_DECODER_H_ | 96 #endif // MEDIA_FILTERS_VPX_VIDEO_DECODER_H_ |
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