blob: ab14a28cbec19e35b42f7abb10a472b519298914 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_AUDIO_AUDIO_OUTPUT_DELEGATE_H_
#define MEDIA_AUDIO_AUDIO_OUTPUT_DELEGATE_H_
#include <memory>
#include <string>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "media/base/media_export.h"
namespace base {
class UnsafeSharedMemoryRegion;
class CancelableSyncSocket;
}
namespace media {
class MEDIA_EXPORT AudioOutputDelegate {
public:
// An AudioOutputDelegate must not call back to its EventHandler in its
// constructor.
class MEDIA_EXPORT EventHandler {
public:
virtual ~EventHandler() = 0;
// Called when the underlying stream is ready for playout.
virtual void OnStreamCreated(
int stream_id,
base::UnsafeSharedMemoryRegion shared_memory_region,
std::unique_ptr<base::CancelableSyncSocket> socket) = 0;
// Called if stream encounters an error and has become unusable.
virtual void OnStreamError(int stream_id) = 0;
};
virtual ~AudioOutputDelegate() = 0;
virtual int GetStreamId() = 0;
// Stream control:
virtual void OnPlayStream() = 0;
virtual void OnPauseStream() = 0;
virtual void OnFlushStream() = 0;
virtual void OnSetVolume(double volume) = 0;
};
} // namespace media
#endif // MEDIA_AUDIO_AUDIO_OUTPUT_DELEGATE_H_
|
