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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 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 | 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 "media/base/data_source.h" | |
9 #include "media/base/demuxer_stream.h" | 10 #include "media/base/demuxer_stream.h" |
10 #include "media/base/media_export.h" | 11 #include "media/base/media_export.h" |
11 | 12 |
12 // TODO(acolwell): Remove include once DataSource & Preload are moved | 13 // TODO(acolwell): Remove include once DataSource & Preload are moved |
13 // out of "media/base/filters.h" and Stop() is converted to use new callbacks. | 14 // out of "media/base/filters.h" and Stop() is converted to use new callbacks. |
14 #include "media/base/filters.h" | 15 #include "media/base/filters.h" |
15 #include "media/base/pipeline_status.h" | 16 #include "media/base/pipeline_status.h" |
16 | 17 |
17 namespace media { | 18 namespace media { |
18 | 19 |
19 class FilterHost; | 20 class DemuxerHost : public DataSourceHost { |
21 public: | |
22 // Get the duration of the media in microseconds. If the duration has not | |
23 // been determined yet, then returns 0. | |
24 virtual void SetDuration(base::TimeDelta duration) = 0; | |
25 | |
26 // Set the approximate amount of playable data buffered so far in micro- | |
27 // seconds. | |
28 virtual void SetBufferedTime(base::TimeDelta buffered_time) = 0; | |
29 | |
30 // Sets the byte offset at which the client is requesting the video. | |
31 virtual void SetCurrentReadPosition(int64 offset) = 0; | |
32 | |
33 // Stops execution of the pipeline due to a fatal error. Do not call this | |
34 // method with PIPELINE_OK. | |
35 virtual void OnDemuxerError(PipelineStatus error) = 0; | |
36 | |
37 protected: | |
38 virtual ~DemuxerHost() {} | |
Ami GONE FROM CHROMIUM
2011/12/15 18:39:08
Out-of-line please.
(even though here the clang pl
acolwell GONE FROM CHROMIUM
2011/12/15 20:57:59
Done and made public since I don't have a good rea
| |
39 }; | |
20 | 40 |
21 class MEDIA_EXPORT Demuxer | 41 class MEDIA_EXPORT Demuxer |
22 : public base::RefCountedThreadSafe<Demuxer> { | 42 : public base::RefCountedThreadSafe<Demuxer> { |
23 public: | 43 public: |
24 // Sets the private member |host_|. This is the first method called by | 44 // Sets the private member |host_|. This is the first method called by |
25 // the FilterHost after a demuxer is created. The host holds a strong | 45 // the FilterHost after a demuxer is created. The host holds a strong |
26 // reference to the demuxer. The reference held by the host is guaranteed | 46 // reference to the demuxer. The reference held by the host is guaranteed |
27 // to be released before the host object is destroyed by the pipeline. | 47 // to be released before the host object is destroyed by the pipeline. |
28 // | 48 // |
29 // TODO(acolwell): Change this to a narrow DemuxerHost interface. | 49 // TODO(acolwell): Change this to a narrow DemuxerHost interface. |
30 virtual void set_host(FilterHost* host); | 50 virtual void set_host(DemuxerHost* host); |
31 | 51 |
32 // The pipeline playback rate has been changed. Demuxers may implement this | 52 // The pipeline playback rate has been changed. Demuxers may implement this |
33 // method if they need to respond to this call. | 53 // method if they need to respond to this call. |
34 virtual void SetPlaybackRate(float playback_rate); | 54 virtual void SetPlaybackRate(float playback_rate); |
35 | 55 |
36 // Carry out any actions required to seek to the given time, executing the | 56 // Carry out any actions required to seek to the given time, executing the |
37 // callback upon completion. | 57 // callback upon completion. |
38 virtual void Seek(base::TimeDelta time, const PipelineStatusCB& callback); | 58 virtual void Seek(base::TimeDelta time, const PipelineStatusCB& callback); |
39 | 59 |
40 // The pipeline is being stopped either as a result of an error or because | 60 // The pipeline is being stopped either as a result of an error or because |
(...skipping 20 matching lines...) Expand all Loading... | |
61 // approximated. Returns 0 if it is unknown. | 81 // approximated. Returns 0 if it is unknown. |
62 virtual int GetBitrate() = 0; | 82 virtual int GetBitrate() = 0; |
63 | 83 |
64 // Returns true if the source is from a local file or stream (such as a | 84 // Returns true if the source is from a local file or stream (such as a |
65 // webcam stream), false otherwise. | 85 // webcam stream), false otherwise. |
66 virtual bool IsLocalSource() = 0; | 86 virtual bool IsLocalSource() = 0; |
67 | 87 |
68 // Returns true if seeking is possible; false otherwise. | 88 // Returns true if seeking is possible; false otherwise. |
69 virtual bool IsSeekable() = 0; | 89 virtual bool IsSeekable() = 0; |
70 | 90 |
71 protected: | 91 protected: |
Ami GONE FROM CHROMIUM
2011/12/15 18:39:08
Ditto q about documenting protected.
acolwell GONE FROM CHROMIUM
2011/12/15 20:57:59
Done.
| |
72 Demuxer(); | 92 Demuxer(); |
73 FilterHost* host() { return host_; } | 93 DemuxerHost* host() { return host_; } |
74 | 94 |
75 friend class base::RefCountedThreadSafe<Demuxer>; | 95 friend class base::RefCountedThreadSafe<Demuxer>; |
76 virtual ~Demuxer(); | 96 virtual ~Demuxer(); |
77 | 97 |
78 private: | 98 private: |
79 FilterHost* host_; | 99 DemuxerHost* host_; |
80 | 100 |
81 DISALLOW_COPY_AND_ASSIGN(Demuxer); | 101 DISALLOW_COPY_AND_ASSIGN(Demuxer); |
82 }; | 102 }; |
83 | 103 |
84 } // namespace media | 104 } // namespace media |
85 | 105 |
86 #endif // MEDIA_BASE_DEMUXER_H_ | 106 #endif // MEDIA_BASE_DEMUXER_H_ |
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