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Side by Side Diff: media/base/demuxer.h

Issue 9860027: Remove DemuxerFactory and URL parameter from Pipeline. (Closed) Base URL: svn://chrome-svn/chrome/trunk/src
Patch Set: again Created 8 years, 8 months ago
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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_BASE_DEMUXER_H_ 5 #ifndef MEDIA_BASE_DEMUXER_H_
6 #define MEDIA_BASE_DEMUXER_H_ 6 #define MEDIA_BASE_DEMUXER_H_
7 7
8 #include "base/memory/ref_counted.h" 8 #include "base/memory/ref_counted.h"
9 #include "base/time.h" 9 #include "base/time.h"
10 #include "media/base/data_source.h" 10 #include "media/base/data_source.h"
11 #include "media/base/demuxer_stream.h" 11 #include "media/base/demuxer_stream.h"
12 #include "media/base/media_export.h" 12 #include "media/base/media_export.h"
13 #include "media/base/pipeline_status.h" 13 #include "media/base/pipeline_status.h"
14 #include "media/base/preload.h"
15 14
16 namespace media { 15 namespace media {
17 16
18 class MEDIA_EXPORT DemuxerHost : public DataSourceHost { 17 class MEDIA_EXPORT DemuxerHost : public DataSourceHost {
19 public: 18 public:
20 virtual ~DemuxerHost(); 19 virtual ~DemuxerHost();
21 20
22 // Get the duration of the media in microseconds. If the duration has not 21 // Get the duration of the media in microseconds. If the duration has not
23 // been determined yet, then returns 0. 22 // been determined yet, then returns 0.
24 virtual void SetDuration(base::TimeDelta duration) = 0; 23 virtual void SetDuration(base::TimeDelta duration) = 0;
(...skipping 14 matching lines...) Expand all
39 : public base::RefCountedThreadSafe<Demuxer> { 38 : public base::RefCountedThreadSafe<Demuxer> {
40 public: 39 public:
41 Demuxer(); 40 Demuxer();
42 41
43 // Sets the private member |host_|. This is the first method called by 42 // Sets the private member |host_|. This is the first method called by
44 // the DemuxerHost after a demuxer is created. The host holds a strong 43 // the DemuxerHost after a demuxer is created. The host holds a strong
45 // reference to the demuxer. The reference held by the host is guaranteed 44 // reference to the demuxer. The reference held by the host is guaranteed
46 // to be released before the host object is destroyed by the pipeline. 45 // to be released before the host object is destroyed by the pipeline.
47 virtual void set_host(DemuxerHost* host); 46 virtual void set_host(DemuxerHost* host);
48 47
48 // Completes initialization of the demuxer.
49 //
50 // TODO(scherkus): pass in DemuxerHost here instead of using set_host(),
51 // see http://crbug.com/111585
52 virtual void Initialize(const PipelineStatusCB& status_cb) = 0;
53
49 // The pipeline playback rate has been changed. Demuxers may implement this 54 // The pipeline playback rate has been changed. Demuxers may implement this
50 // method if they need to respond to this call. 55 // method if they need to respond to this call.
51 virtual void SetPlaybackRate(float playback_rate); 56 virtual void SetPlaybackRate(float playback_rate);
52 57
53 // Carry out any actions required to seek to the given time, executing the 58 // Carry out any actions required to seek to the given time, executing the
54 // callback upon completion. 59 // callback upon completion.
55 virtual void Seek(base::TimeDelta time, const PipelineStatusCB& status_cb); 60 virtual void Seek(base::TimeDelta time, const PipelineStatusCB& status_cb);
56 61
57 // The pipeline is being stopped either as a result of an error or because 62 // The pipeline is being stopped either as a result of an error or because
58 // the client called Stop(). 63 // the client called Stop().
59 virtual void Stop(const base::Closure& callback); 64 virtual void Stop(const base::Closure& callback);
60 65
61 // This method is called from the pipeline when the audio renderer 66 // This method is called from the pipeline when the audio renderer
62 // is disabled. Demuxers can ignore the notification if they do not 67 // is disabled. Demuxers can ignore the notification if they do not
63 // need to react to this event. 68 // need to react to this event.
64 // 69 //
65 // TODO(acolwell): Change to generic DisableStream(DemuxerStream::Type). 70 // TODO(acolwell): Change to generic DisableStream(DemuxerStream::Type).
66 virtual void OnAudioRendererDisabled(); 71 virtual void OnAudioRendererDisabled();
67 72
68 // Returns the given stream type, or NULL if that type is not present. 73 // Returns the given stream type, or NULL if that type is not present.
69 virtual scoped_refptr<DemuxerStream> GetStream(DemuxerStream::Type type) = 0; 74 virtual scoped_refptr<DemuxerStream> GetStream(DemuxerStream::Type type) = 0;
70 75
71 // Alert the Demuxer that the video preload value has been changed.
72 virtual void SetPreload(Preload preload) = 0;
73
74 // Returns the starting time for the media file. 76 // Returns the starting time for the media file.
75 virtual base::TimeDelta GetStartTime() const = 0; 77 virtual base::TimeDelta GetStartTime() const = 0;
76 78
77 // Returns the content bitrate. May be obtained from container or 79 // Returns the content bitrate. May be obtained from container or
78 // approximated. Returns 0 if it is unknown. 80 // approximated. Returns 0 if it is unknown.
79 virtual int GetBitrate() = 0; 81 virtual int GetBitrate() = 0;
80 82
81 // Returns true if the source is from a local file or stream (such as a 83 // Returns true if the source is from a local file or stream (such as a
82 // webcam stream), false otherwise. 84 // webcam stream), false otherwise.
85 //
86 // TODO(scherkus): See http://crbug.com/120426 on why we should remove this.
83 virtual bool IsLocalSource() = 0; 87 virtual bool IsLocalSource() = 0;
84 88
85 // Returns true if seeking is possible; false otherwise. 89 // Returns true if seeking is possible; false otherwise.
86 virtual bool IsSeekable() = 0; 90 virtual bool IsSeekable() = 0;
87 91
88 protected: 92 protected:
89 // Only allow derived objects access to the DemuxerHost. This is 93 // Only allow derived objects access to the DemuxerHost. This is
90 // kept out of the public interface because demuxers need to be 94 // kept out of the public interface because demuxers need to be
91 // aware of all calls made to the host object so they can insure 95 // aware of all calls made to the host object so they can insure
92 // the state presented to the host is always consistent with its own 96 // the state presented to the host is always consistent with its own
93 // state. 97 // state.
94 DemuxerHost* host() { return host_; } 98 DemuxerHost* host() { return host_; }
95 99
96 friend class base::RefCountedThreadSafe<Demuxer>; 100 friend class base::RefCountedThreadSafe<Demuxer>;
97 virtual ~Demuxer(); 101 virtual ~Demuxer();
98 102
99 private: 103 private:
100 DemuxerHost* host_; 104 DemuxerHost* host_;
101 105
102 DISALLOW_COPY_AND_ASSIGN(Demuxer); 106 DISALLOW_COPY_AND_ASSIGN(Demuxer);
103 }; 107 };
104 108
105 } // namespace media 109 } // namespace media
106 110
107 #endif // MEDIA_BASE_DEMUXER_H_ 111 #endif // MEDIA_BASE_DEMUXER_H_
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