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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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_DECODER_STREAM_H_ | 5 #ifndef MEDIA_FILTERS_DECODER_STREAM_H_ |
6 #define MEDIA_FILTERS_DECODER_STREAM_H_ | 6 #define MEDIA_FILTERS_DECODER_STREAM_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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32 class DecryptingDemuxerStream; | 32 class DecryptingDemuxerStream; |
33 | 33 |
34 // Wraps a DemuxerStream and a list of Decoders and provides decoded | 34 // Wraps a DemuxerStream and a list of Decoders and provides decoded |
35 // output to its client (e.g. Audio/VideoRendererImpl). | 35 // output to its client (e.g. Audio/VideoRendererImpl). |
36 template<DemuxerStream::Type StreamType> | 36 template<DemuxerStream::Type StreamType> |
37 class MEDIA_EXPORT DecoderStream { | 37 class MEDIA_EXPORT DecoderStream { |
38 public: | 38 public: |
39 typedef DecoderStreamTraits<StreamType> StreamTraits; | 39 typedef DecoderStreamTraits<StreamType> StreamTraits; |
40 typedef typename StreamTraits::DecoderType Decoder; | 40 typedef typename StreamTraits::DecoderType Decoder; |
41 typedef typename StreamTraits::OutputType Output; | 41 typedef typename StreamTraits::OutputType Output; |
42 typedef typename Decoder::Status DecoderStatus; | |
43 | 42 |
44 enum Status { | 43 enum Status { |
45 OK, // Everything went as planned. | 44 OK, // Everything went as planned. |
46 ABORTED, // Read aborted due to Reset() during pending read. | 45 ABORTED, // Read aborted due to Reset() during pending read. |
47 DEMUXER_READ_ABORTED, // Demuxer returned aborted read. | 46 DEMUXER_READ_ABORTED, // Demuxer returned aborted read. |
48 DECODE_ERROR, // Decoder returned decode error. | 47 DECODE_ERROR, // Decoder returned decode error. |
49 }; | 48 }; |
50 | 49 |
51 // Indicates completion of a DecoderStream initialization. | 50 // Indicates completion of a DecoderStream initialization. |
52 typedef base::Callback<void(bool success)> InitCB; | 51 typedef base::Callback<void(bool success)> InitCB; |
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149 const scoped_refptr<Output>& output); | 148 const scoped_refptr<Output>& output); |
150 | 149 |
151 // Decodes |buffer| and returns the result via OnDecodeOutputReady(). | 150 // Decodes |buffer| and returns the result via OnDecodeOutputReady(). |
152 void Decode(const scoped_refptr<DecoderBuffer>& buffer); | 151 void Decode(const scoped_refptr<DecoderBuffer>& buffer); |
153 | 152 |
154 // Flushes the decoder with an EOS buffer to retrieve internally buffered | 153 // Flushes the decoder with an EOS buffer to retrieve internally buffered |
155 // decoder output. | 154 // decoder output. |
156 void FlushDecoder(); | 155 void FlushDecoder(); |
157 | 156 |
158 // Callback for Decoder::Decode(). | 157 // Callback for Decoder::Decode(). |
159 void OnDecodeDone(int buffer_size, bool end_of_stream, DecoderStatus status); | 158 void OnDecodeDone(int buffer_size, bool end_of_stream, DecodeStatus status); |
160 | 159 |
161 // Output callback passed to Decoder::Initialize(). | 160 // Output callback passed to Decoder::Initialize(). |
162 void OnDecodeOutputReady(const scoped_refptr<Output>& output); | 161 void OnDecodeOutputReady(const scoped_refptr<Output>& output); |
163 | 162 |
164 // Reads a buffer from |stream_| and returns the result via OnBufferReady(). | 163 // Reads a buffer from |stream_| and returns the result via OnBufferReady(). |
165 void ReadFromDemuxerStream(); | 164 void ReadFromDemuxerStream(); |
166 | 165 |
167 // Callback for DemuxerStream::Read(). | 166 // Callback for DemuxerStream::Read(). |
168 void OnBufferReady(DemuxerStream::Status status, | 167 void OnBufferReady(DemuxerStream::Status status, |
169 const scoped_refptr<DecoderBuffer>& buffer); | 168 const scoped_refptr<DecoderBuffer>& buffer); |
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235 | 234 |
236 template <> | 235 template <> |
237 int DecoderStream<DemuxerStream::AUDIO>::GetMaxDecodeRequests() const; | 236 int DecoderStream<DemuxerStream::AUDIO>::GetMaxDecodeRequests() const; |
238 | 237 |
239 typedef DecoderStream<DemuxerStream::VIDEO> VideoFrameStream; | 238 typedef DecoderStream<DemuxerStream::VIDEO> VideoFrameStream; |
240 typedef DecoderStream<DemuxerStream::AUDIO> AudioBufferStream; | 239 typedef DecoderStream<DemuxerStream::AUDIO> AudioBufferStream; |
241 | 240 |
242 } // namespace media | 241 } // namespace media |
243 | 242 |
244 #endif // MEDIA_FILTERS_DECODER_STREAM_H_ | 243 #endif // MEDIA_FILTERS_DECODER_STREAM_H_ |
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