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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "base/message_loop.h" |
| 6 #include "media/filters/ffmpeg_demuxer.h" |
| 7 #include "media/filters/ffmpeg_demuxer_factory.h" |
| 8 |
| 9 namespace media { |
| 10 |
| 11 FFmpegDemuxerFactory::FFmpegDemuxerFactory( |
| 12 DataSourceFactory* data_source_factory, |
| 13 MessageLoop* loop) |
| 14 : data_source_factory_(data_source_factory), loop_(loop) {} |
| 15 |
| 16 FFmpegDemuxerFactory::~FFmpegDemuxerFactory() {} |
| 17 |
| 18 // This and the next class are one-offs whose raison d'etre is the lack of |
| 19 // currying functionality in base/callback_old.h's machinery. Once media/ |
| 20 // PipelineStatusCallback and {DataSource,Demuxer}Factory::BuildCallback are |
| 21 // migrated to the new base/callback.h machinery these should be removed and |
| 22 // replaced with currying calls to base::Bind(). |
| 23 class DemuxerCallbackAsPipelineStatusCallback : public PipelineStatusCallback { |
| 24 public: |
| 25 DemuxerCallbackAsPipelineStatusCallback( |
| 26 DemuxerFactory::BuildCallback* cb, |
| 27 Demuxer* demuxer) |
| 28 : cb_(cb), demuxer_(demuxer) { |
| 29 DCHECK(cb_.get() && demuxer_); |
| 30 } |
| 31 |
| 32 virtual ~DemuxerCallbackAsPipelineStatusCallback() {} |
| 33 |
| 34 virtual void RunWithParams(const Tuple1<PipelineError>& params) { |
| 35 cb_->Run(params.a, demuxer_); |
| 36 } |
| 37 |
| 38 private: |
| 39 scoped_ptr<DemuxerFactory::BuildCallback> cb_; |
| 40 scoped_refptr<Demuxer> demuxer_; |
| 41 |
| 42 DISALLOW_IMPLICIT_CONSTRUCTORS(DemuxerCallbackAsPipelineStatusCallback); |
| 43 }; |
| 44 |
| 45 // See comments on DemuxerCallbackAsPipelineStatusCallback above. |
| 46 class DemuxerCallbackAsDataSourceCallback : |
| 47 public DataSourceFactory::BuildCallback { |
| 48 public: |
| 49 DemuxerCallbackAsDataSourceCallback(DemuxerFactory::BuildCallback* cb, |
| 50 MessageLoop* loop) |
| 51 : cb_(cb), loop_(loop) { |
| 52 DCHECK(cb_.get() && loop_); |
| 53 } |
| 54 |
| 55 virtual ~DemuxerCallbackAsDataSourceCallback() {} |
| 56 |
| 57 virtual void RunWithParams(const Tuple2<PipelineError, DataSource*>& params) { |
| 58 PipelineError status = params.a; |
| 59 DataSource* data_source = params.b; |
| 60 if (status != PIPELINE_OK) { |
| 61 cb_->Run(status, static_cast<Demuxer*>(NULL)); |
| 62 return; |
| 63 } |
| 64 DCHECK(data_source); |
| 65 scoped_refptr<FFmpegDemuxer> demuxer = new FFmpegDemuxer(loop_); |
| 66 demuxer->Initialize( |
| 67 data_source, |
| 68 new DemuxerCallbackAsPipelineStatusCallback(cb_.release(), demuxer)); |
| 69 } |
| 70 |
| 71 private: |
| 72 scoped_ptr<DemuxerFactory::BuildCallback> cb_; |
| 73 MessageLoop* loop_; |
| 74 |
| 75 DISALLOW_IMPLICIT_CONSTRUCTORS(DemuxerCallbackAsDataSourceCallback); |
| 76 }; |
| 77 |
| 78 void FFmpegDemuxerFactory::Build(const std::string& url, BuildCallback* cb) { |
| 79 data_source_factory_->Build( |
| 80 url, new DemuxerCallbackAsDataSourceCallback(cb, loop_)); |
| 81 } |
| 82 |
| 83 DemuxerFactory* FFmpegDemuxerFactory::Clone() const { |
| 84 return new FFmpegDemuxerFactory(data_source_factory_->Clone(), loop_); |
| 85 } |
| 86 |
| 87 } // namespace media |
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