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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 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_BASE_MEDIA_FILTER_COLLECTION_H_ | 5 #ifndef MEDIA_BASE_FILTER_COLLECTION_H_ |
| 6 #define MEDIA_BASE_MEDIA_FILTER_COLLECTION_H_ | 6 #define MEDIA_BASE_FILTER_COLLECTION_H_ |
| 7 | 7 |
| 8 #include <list> | 8 #include <list> |
| 9 | 9 |
| 10 #include "base/ref_counted.h" | 10 #include "base/ref_counted.h" |
| 11 #include "media/base/filters.h" | 11 #include "media/base/filters.h" |
| 12 | 12 |
| 13 namespace media { | 13 namespace media { |
| 14 | 14 |
| 15 // This is a collection of MediaFilter objects used to form a media playback | 15 // This is a collection of Filter objects used to form a media playback |
| 16 // pipeline. See src/media/base/pipeline.h for more information. | 16 // pipeline. See src/media/base/pipeline.h for more information. |
| 17 class MediaFilterCollection { | 17 class FilterCollection { |
| 18 public: | 18 public: |
| 19 MediaFilterCollection(); | 19 FilterCollection(); |
| 20 | 20 |
| 21 // Adds a filter to the collection. | 21 // Adds a filter to the collection. |
| 22 void AddDataSource(DataSource* filter); | 22 void AddDataSource(DataSource* filter); |
| 23 void AddDemuxer(Demuxer* filter); | 23 void AddDemuxer(Demuxer* filter); |
| 24 void AddVideoDecoder(VideoDecoder* filter); | 24 void AddVideoDecoder(VideoDecoder* filter); |
| 25 void AddAudioDecoder(AudioDecoder* filter); | 25 void AddAudioDecoder(AudioDecoder* filter); |
| 26 void AddVideoRenderer(VideoRenderer* filter); | 26 void AddVideoRenderer(VideoRenderer* filter); |
| 27 void AddAudioRenderer(AudioRenderer* filter); | 27 void AddAudioRenderer(AudioRenderer* filter); |
| 28 | 28 |
| 29 // Is the collection empty? | 29 // Is the collection empty? |
| (...skipping 15 matching lines...) Expand all Loading... |
| 45 private: | 45 private: |
| 46 // Identifies the type of filter implementation. Each filter has to be one of | 46 // Identifies the type of filter implementation. Each filter has to be one of |
| 47 // the following types. This is used to mark, identify, and support | 47 // the following types. This is used to mark, identify, and support |
| 48 // downcasting of different filter types stored in the filters_ list. | 48 // downcasting of different filter types stored in the filters_ list. |
| 49 enum FilterType { | 49 enum FilterType { |
| 50 DATA_SOURCE, | 50 DATA_SOURCE, |
| 51 DEMUXER, | 51 DEMUXER, |
| 52 AUDIO_DECODER, | 52 AUDIO_DECODER, |
| 53 VIDEO_DECODER, | 53 VIDEO_DECODER, |
| 54 AUDIO_RENDERER, | 54 AUDIO_RENDERER, |
| 55 VIDEO_RENDERER | 55 VIDEO_RENDERER, |
| 56 }; | 56 }; |
| 57 | 57 |
| 58 // List of filters managed by this collection. | 58 // List of filters managed by this collection. |
| 59 typedef std::pair<FilterType, scoped_refptr<MediaFilter> > FilterListElement; | 59 typedef std::pair<FilterType, scoped_refptr<Filter> > FilterListElement; |
| 60 typedef std::list<FilterListElement> FilterList; | 60 typedef std::list<FilterListElement> FilterList; |
| 61 FilterList filters_; | 61 FilterList filters_; |
| 62 | 62 |
| 63 // Helper function that adds a filter to the filter list. | 63 // Helper function that adds a filter to the filter list. |
| 64 void AddFilter(FilterType filter_type, MediaFilter* filter); | 64 void AddFilter(FilterType filter_type, Filter* filter); |
| 65 | 65 |
| 66 // Helper function for SelectXXX() methods. It manages the | 66 // Helper function for SelectXXX() methods. It manages the |
| 67 // downcasting and mapping between FilterType and Filter class. | 67 // downcasting and mapping between FilterType and Filter class. |
| 68 template<FilterType filter_type, class Filter> | 68 template<FilterType filter_type, typename F> |
| 69 void SelectFilter(scoped_refptr<Filter>* filter_out); | 69 void SelectFilter(scoped_refptr<F>* filter_out); |
| 70 | 70 |
| 71 // Helper function that searches the filters list for a specific | 71 // Helper function that searches the filters list for a specific filter type. |
| 72 // filter type. | 72 void SelectFilter(FilterType filter_type, scoped_refptr<Filter>* filter_out); |
| 73 void SelectFilter(FilterType filter_type, | |
| 74 scoped_refptr<MediaFilter>* filter_out); | |
| 75 | 73 |
| 76 DISALLOW_COPY_AND_ASSIGN(MediaFilterCollection); | 74 DISALLOW_COPY_AND_ASSIGN(FilterCollection); |
| 77 }; | 75 }; |
| 78 | 76 |
| 79 } // namespace media | 77 } // namespace media |
| 80 | 78 |
| 81 #endif // MEDIA_BASE_MEDIA_FILTER_COLLECTION_H_ | 79 #endif // MEDIA_BASE_FILTER_COLLECTION_H_ |
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