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Side by Side Diff: media/audio/audio_io.h

Issue 1534273002: Switch to standard integer types in media/. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: more Created 5 years ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 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_AUDIO_AUDIO_IO_H_ 5 #ifndef MEDIA_AUDIO_AUDIO_IO_H_
6 #define MEDIA_AUDIO_AUDIO_IO_H_ 6 #define MEDIA_AUDIO_AUDIO_IO_H_
7 7
8 #include "base/basictypes.h"
9 #include "media/base/audio_bus.h" 8 #include "media/base/audio_bus.h"
10 9
11 // Low-level audio output support. To make sound there are 3 objects involved: 10 // Low-level audio output support. To make sound there are 3 objects involved:
12 // - AudioSource : produces audio samples on a pull model. Implements 11 // - AudioSource : produces audio samples on a pull model. Implements
13 // the AudioSourceCallback interface. 12 // the AudioSourceCallback interface.
14 // - AudioOutputStream : uses the AudioSource to render audio on a given 13 // - AudioOutputStream : uses the AudioSource to render audio on a given
15 // channel, format and sample frequency configuration. Data from the 14 // channel, format and sample frequency configuration. Data from the
16 // AudioSource is delivered in a 'pull' model. 15 // AudioSource is delivered in a 'pull' model.
17 // - AudioManager : factory for the AudioOutputStream objects, manager 16 // - AudioManager : factory for the AudioOutputStream objects, manager
18 // of the hardware resources and mixer control. 17 // of the hardware resources and mixer control.
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105 class MEDIA_EXPORT AudioInputStream { 104 class MEDIA_EXPORT AudioInputStream {
106 public: 105 public:
107 class MEDIA_EXPORT AudioInputCallback { 106 class MEDIA_EXPORT AudioInputCallback {
108 public: 107 public:
109 // Called by the audio recorder when a full packet of audio data is 108 // Called by the audio recorder when a full packet of audio data is
110 // available. This is called from a special audio thread and the 109 // available. This is called from a special audio thread and the
111 // implementation should return as soon as possible. 110 // implementation should return as soon as possible.
112 // TODO(henrika): should be pure virtual when old OnData() is phased out. 111 // TODO(henrika): should be pure virtual when old OnData() is phased out.
113 virtual void OnData(AudioInputStream* stream, 112 virtual void OnData(AudioInputStream* stream,
114 const AudioBus* source, 113 const AudioBus* source,
115 uint32 hardware_delay_bytes, 114 uint32_t hardware_delay_bytes,
116 double volume) {}; 115 double volume){};
117 116
118 // TODO(henrika): don't use; to be removed. 117 // TODO(henrika): don't use; to be removed.
119 virtual void OnData(AudioInputStream* stream, 118 virtual void OnData(AudioInputStream* stream,
120 const uint8* src, 119 const uint8_t* src,
121 uint32 size, 120 uint32_t size,
122 uint32 hardware_delay_bytes, 121 uint32_t hardware_delay_bytes,
123 double volume) {}; 122 double volume){};
124 123
125 // There was an error while recording audio. The audio sink cannot be 124 // There was an error while recording audio. The audio sink cannot be
126 // destroyed yet. No direct action needed by the AudioInputStream, but it 125 // destroyed yet. No direct action needed by the AudioInputStream, but it
127 // is a good place to stop accumulating sound data since is is likely that 126 // is a good place to stop accumulating sound data since is is likely that
128 // recording will not continue. 127 // recording will not continue.
129 virtual void OnError(AudioInputStream* stream) = 0; 128 virtual void OnError(AudioInputStream* stream) = 0;
130 129
131 protected: 130 protected:
132 virtual ~AudioInputCallback() {} 131 virtual ~AudioInputCallback() {}
133 }; 132 };
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167 // Returns the Automatic Gain Control (AGC) state. 166 // Returns the Automatic Gain Control (AGC) state.
168 virtual bool GetAutomaticGainControl() = 0; 167 virtual bool GetAutomaticGainControl() = 0;
169 168
170 // Returns the current muting state for the microphone. 169 // Returns the current muting state for the microphone.
171 virtual bool IsMuted() = 0; 170 virtual bool IsMuted() = 0;
172 }; 171 };
173 172
174 } // namespace media 173 } // namespace media
175 174
176 #endif // MEDIA_AUDIO_AUDIO_IO_H_ 175 #endif // MEDIA_AUDIO_AUDIO_IO_H_
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