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

Issue 6686061: PipelineError is dead. Long live PipelineStatus! (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Double-delete fix for PipelineStatusNotification Created 9 years, 9 months ago
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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
acolwell GONE FROM CHROMIUM 2011/03/15 03:56:28 copyright
Ami GONE FROM CHROMIUM 2011/03/15 17:37:18 Done. Next CL: presubmit that checks this for me.
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 // FilterHost describes an interface for individual filters to access and 5 // FilterHost describes an interface for individual filters to access and
6 // modify global playback information. Every filter is given a filter host 6 // modify global playback information. Every filter is given a filter host
7 // reference as part of initialization. 7 // reference as part of initialization.
8 // 8 //
9 // This interface is intentionally verbose to cover the needs for the different 9 // This interface is intentionally verbose to cover the needs for the different
10 // types of filters (see media/base/filters.h for filter definitionss). Filters 10 // types of filters (see media/base/filters.h for filter definitions). Filters
11 // typically use parts of the interface that are relevant to their function. 11 // typically use parts of the interface that are relevant to their function.
12 // For example, an audio renderer filter typically calls SetTime as it feeds 12 // For example, an audio renderer filter typically calls SetTime as it feeds
13 // data to the audio hardware. A video renderer filter typically calls GetTime 13 // data to the audio hardware. A video renderer filter typically calls GetTime
14 // to synchronize video with audio. An audio and video decoder would typically 14 // to synchronize video with audio. An audio and video decoder would typically
15 // have no need to call either SetTime or GetTime. 15 // have no need to call either SetTime or GetTime.
16 16
17 #ifndef MEDIA_BASE_FILTER_HOST_H_ 17 #ifndef MEDIA_BASE_FILTER_HOST_H_
18 #define MEDIA_BASE_FILTER_HOST_H_ 18 #define MEDIA_BASE_FILTER_HOST_H_
19 19
20 #include "media/base/filters.h" 20 #include "media/base/filters.h"
21 #include "media/base/pipeline.h" 21 #include "media/base/pipeline.h"
22 22
23 namespace media { 23 namespace media {
24 24
25 class FilterHost { 25 class FilterHost {
26 public: 26 public:
27 // Stops execution of the pipeline due to a fatal error. Do not call this 27 // Stops execution of the pipeline due to a fatal error. Do not call this
28 // method with PIPELINE_OK. 28 // method with PIPELINE_OK.
29 virtual void SetError(PipelineError error) = 0; 29 virtual void SetError(PipelineStatus error) = 0;
30 30
31 // Gets the current time in microseconds. 31 // Gets the current time in microseconds.
32 virtual base::TimeDelta GetTime() const = 0; 32 virtual base::TimeDelta GetTime() const = 0;
33 33
34 // Gets the duration in microseconds. 34 // Gets the duration in microseconds.
35 virtual base::TimeDelta GetDuration() const = 0; 35 virtual base::TimeDelta GetDuration() const = 0;
36 36
37 // Updates the current time. Other filters should poll to examine the updated 37 // Updates the current time. Other filters should poll to examine the updated
38 // time. 38 // time.
39 virtual void SetTime(base::TimeDelta time) = 0; 39 virtual void SetTime(base::TimeDelta time) = 0;
(...skipping 39 matching lines...) Expand 10 before | Expand all | Expand 10 after
79 // Gets the byte offset at which the client is requesting the video. 79 // Gets the byte offset at which the client is requesting the video.
80 virtual int64 GetCurrentReadPosition() = 0; 80 virtual int64 GetCurrentReadPosition() = 0;
81 81
82 protected: 82 protected:
83 virtual ~FilterHost() {} 83 virtual ~FilterHost() {}
84 }; 84 };
85 85
86 } // namespace media 86 } // namespace media
87 87
88 #endif // MEDIA_BASE_FILTER_HOST_H_ 88 #endif // MEDIA_BASE_FILTER_HOST_H_
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