OLD | NEW |
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_PARAMETERS_H_ | 5 #ifndef MEDIA_AUDIO_AUDIO_PARAMETERS_H_ |
6 #define MEDIA_AUDIO_AUDIO_PARAMETERS_H_ | 6 #define MEDIA_AUDIO_AUDIO_PARAMETERS_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
| 9 #include "base/time/time.h" |
9 #include "media/base/channel_layout.h" | 10 #include "media/base/channel_layout.h" |
10 #include "media/base/media_export.h" | 11 #include "media/base/media_export.h" |
11 | 12 |
12 namespace media { | 13 namespace media { |
13 | 14 |
14 struct MEDIA_EXPORT AudioInputBufferParameters { | 15 struct MEDIA_EXPORT AudioInputBufferParameters { |
15 double volume; | 16 double volume; |
16 uint32 size; | 17 uint32 size; |
17 bool key_pressed; | 18 bool key_pressed; |
18 }; | 19 }; |
(...skipping 43 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
62 | 63 |
63 // Returns size of audio buffer in bytes. | 64 // Returns size of audio buffer in bytes. |
64 int GetBytesPerBuffer() const; | 65 int GetBytesPerBuffer() const; |
65 | 66 |
66 // Returns the number of bytes representing one second of audio. | 67 // Returns the number of bytes representing one second of audio. |
67 int GetBytesPerSecond() const; | 68 int GetBytesPerSecond() const; |
68 | 69 |
69 // Returns the number of bytes representing a frame of audio. | 70 // Returns the number of bytes representing a frame of audio. |
70 int GetBytesPerFrame() const; | 71 int GetBytesPerFrame() const; |
71 | 72 |
| 73 // Returns the duration of this buffer as calculated from frames_per_buffer() |
| 74 // and sample_rate(). |
| 75 base::TimeDelta GetBufferDuration() const; |
| 76 |
72 Format format() const { return format_; } | 77 Format format() const { return format_; } |
73 ChannelLayout channel_layout() const { return channel_layout_; } | 78 ChannelLayout channel_layout() const { return channel_layout_; } |
74 int sample_rate() const { return sample_rate_; } | 79 int sample_rate() const { return sample_rate_; } |
75 int bits_per_sample() const { return bits_per_sample_; } | 80 int bits_per_sample() const { return bits_per_sample_; } |
76 int frames_per_buffer() const { return frames_per_buffer_; } | 81 int frames_per_buffer() const { return frames_per_buffer_; } |
77 int channels() const { return channels_; } | 82 int channels() const { return channels_; } |
78 int input_channels() const { return input_channels_; } | 83 int input_channels() const { return input_channels_; } |
79 | 84 |
80 // Set to CHANNEL_LAYOUT_DISCRETE with given number of channels. | 85 // Set to CHANNEL_LAYOUT_DISCRETE with given number of channels. |
81 void SetDiscreteChannels(int channels); | 86 void SetDiscreteChannels(int channels); |
(...skipping 34 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
116 if (a.sample_rate() != b.sample_rate()) | 121 if (a.sample_rate() != b.sample_rate()) |
117 return a.sample_rate() < b.sample_rate(); | 122 return a.sample_rate() < b.sample_rate(); |
118 if (a.bits_per_sample() != b.bits_per_sample()) | 123 if (a.bits_per_sample() != b.bits_per_sample()) |
119 return a.bits_per_sample() < b.bits_per_sample(); | 124 return a.bits_per_sample() < b.bits_per_sample(); |
120 return a.frames_per_buffer() < b.frames_per_buffer(); | 125 return a.frames_per_buffer() < b.frames_per_buffer(); |
121 } | 126 } |
122 | 127 |
123 } // namespace media | 128 } // namespace media |
124 | 129 |
125 #endif // MEDIA_AUDIO_AUDIO_PARAMETERS_H_ | 130 #endif // MEDIA_AUDIO_AUDIO_PARAMETERS_H_ |
OLD | NEW |