OLD | NEW |
| (Empty) |
1 // Copyright 2014 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 module media.interfaces; | |
6 | |
7 import "media/mojo/interfaces/demuxer_stream.mojom"; | |
8 import "media/mojo/interfaces/media_types.mojom"; | |
9 | |
10 interface MediaRenderer { | |
11 // Initializes the Renderer with one or both of an audio and video stream, | |
12 // executing the callback with whether the initialization succeeded. | |
13 Initialize(MediaRendererClient client, | |
14 DemuxerStream? audio, | |
15 DemuxerStream? video) => (bool success); | |
16 | |
17 // Discards any buffered data, executing callback when completed. | |
18 // NOTE: If an error occurs, MediaRendererClient::OnError() can be called | |
19 // before the callback is executed. | |
20 Flush() => (); | |
21 | |
22 // Starts rendering from |time_usec|. | |
23 StartPlayingFrom(int64 time_usec); | |
24 | |
25 // Updates the current playback rate. The default playback rate should be 1. | |
26 SetPlaybackRate(double playback_rate); | |
27 | |
28 // Sets the output volume. The default volume should be 1. | |
29 SetVolume(float volume); | |
30 | |
31 // Attaches the CDM associated with |cdm_id| to the renderer service, | |
32 // executing the callback with whether the CDM was successfully attached. | |
33 SetCdm(int32 cdm_id) => (bool success); | |
34 }; | |
35 | |
36 interface MediaRendererClient { | |
37 // Called to report media time advancement by |time_usec|. | |
38 // |time_usec| and |max_time_usec| can be used to interpolate time between | |
39 // calls to OnTimeUpdate(). | |
40 // |max_time_usec| is typically the media timestamp of the last audio frame | |
41 // buffered by the audio hardware. | |
42 // |max_time_usec| must be greater or equal to |time_usec|. | |
43 OnTimeUpdate(int64 time_usec, int64 max_time_usec); | |
44 | |
45 // Called to report buffering state changes, see media_types.mojom. | |
46 OnBufferingStateChange(BufferingState state); | |
47 | |
48 // Executed when rendering has reached the end of stream. | |
49 OnEnded(); | |
50 | |
51 // Executed if any error was encountered during decode or rendering. If | |
52 // this error happens during an operation that has a completion callback, | |
53 // OnError() will be called before firing the completion callback. | |
54 OnError(); | |
55 }; | |
OLD | NEW |