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1 // Copyright 2015 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 #ifndef CHROMECAST_PUBLIC_CAST_AUDIO_OUTPUT_DEVICE_H_ | |
6 #define CHROMECAST_PUBLIC_CAST_AUDIO_OUTPUT_DEVICE_H_ | |
7 | |
8 #include <string> | |
halliwell
2015/04/24 15:04:48
Is <string> used?
slan
2015/04/24 16:19:39
Nope. Artifact of re-factoring. Removed.
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9 | |
10 #include "cast_audio_stream.h" | |
11 #include "chromecast_export.h" | |
12 | |
13 namespace chromecast { | |
14 | |
15 // This is an interface used to provide platform-specific audio streams. | |
16 // Implementations of this interface should survive for the duration of the | |
17 // process. | |
18 | |
19 // Note: This interface should be implemented by third parties seeking to | |
20 // provide an audio manager platform for Cast. CastAudioManager will call | |
21 // this interface. | |
22 | |
halliwell
2015/04/24 15:04:48
How do implementations get instantiated ... is tha
slan
2015/04/24 16:19:39
Yes, follow-up CL. This merits a discussion about
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23 class CHROMECAST_EXPORT CastAudioOutputDevice { | |
24 public: | |
25 virtual ~CastAudioOutputDevice() {} | |
26 | |
27 // Returns the maximum number of output streams allowed. | |
28 virtual int GetMaximumOutputStreamsAllowed() const = 0; | |
29 | |
30 // Returns the preferred output stream parameters. The caller may inject | |
31 // |suggested| parameters, but it is left to the implementation to decide | |
32 // which of these to return. | |
33 virtual AudioParameters GetPreferredOutputStreamParameters( | |
34 const AudioParameters& suggested) const = 0; | |
35 | |
36 // Creates the output stream with parameters described by |params|. Caller | |
37 // does not take ownership of the returned stream. | |
halliwell
2015/04/24 15:04:48
So what's the lifetime of these streams ... they l
slan
2015/04/24 16:19:39
Good question. For now, that is left up to the imp
halliwell
2015/04/25 01:34:10
I'm not familiar with practical usage of these cla
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38 virtual CastAudioOutputStream* MakeOutputStream( | |
39 const AudioParameters& params) = 0; | |
40 }; | |
41 | |
42 } // namespace chromecast | |
43 | |
44 #endif // CHROMECAST_PUBLIC_CAST_AUDIO_OUTPUT_DEVICE_H_ | |
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