blob: 660071690171dd9ed7e8e1c429ae73b862e18cf4 (
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
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/* Copyright 2014 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.
*/
/**
* Defines the <code>PPB_AudioFrame</code> interface.
*/
[generate_thunk]
label Chrome {
[channel=dev] M34 = 0.1
};
/**
* PP_AudioFrame_SampleRate is an enumeration of the different audio sample
* rates.
*/
enum PP_AudioFrame_SampleRate {
PP_AUDIOFRAME_SAMPLERATE_UNKNOWN = 0,
PP_AUDIOFRAME_SAMPLERATE_44100 = 44100
};
/**
* PP_AudioFrame_SampleSize is an enumeration of the different audio sample
* sizes.
*/
enum PP_AudioFrame_SampleSize {
PP_AUDIOFRAME_SAMPLESIZE_UNKNOWN = 0,
PP_AUDIOFRAME_SAMPLESIZE_16_BITS = 2
};
interface PPB_AudioFrame {
/**
* Determines if a resource is an AudioFrame resource.
*
* @param[in] resource The <code>PP_Resource</code> to test.
*
* @return A <code>PP_Bool</code> with <code>PP_TRUE</code> if the given
* resource is an AudioFrame resource or <code>PP_FALSE</code> otherwise.
*/
PP_Bool IsAudioFrame([in] PP_Resource resource);
/**
* Gets the timestamp of the audio frame.
*
* @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame
* resource.
*
* @return A <code>PP_TimeDelta</code> containing the timestamp of the audio
* frame. Given in seconds since the start of the containing audio stream.
*/
[on_failure=0.0]
PP_TimeDelta GetTimestamp([in] PP_Resource frame);
/**
* Sets the timestamp of the audio frame.
*
* @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame
* resource.
* @param[in] timestamp A <code>PP_TimeDelta</code> containing the timestamp
* of the audio frame. Given in seconds since the start of the containing
* audio stream.
*/
void SetTimestamp([in] PP_Resource frame, [in] PP_TimeDelta timestamp);
/**
* Gets the sample size of the audio frame.
*
* @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame
* resource.
*
* @return The sample size of the audio frame.
*/
[on_failure=PP_AUDIOFRAME_SAMPLESIZE_UNKNOWN]
PP_AudioFrame_SampleSize GetSampleSize([in] PP_Resource frame);
/**
* Gets the number of channels in the audio frame.
*
* @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame
* resource.
*
* @return The number of channels in the audio frame.
*/
uint32_t GetNumberOfChannels([in] PP_Resource frame);
/**
* Gets the number of samples in the audio frame.
*
* @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame
* resource.
*
* @return The number of samples in the audio frame.
* For example, at a sampling rate of 44,100 Hz in stereo audio, a frame
* containing 4410 * 2 samples would have a duration of 100 milliseconds.
*/
uint32_t GetNumberOfSamples([in] PP_Resource frame);
/**
* Gets the data buffer containing the audio frame samples.
*
* @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame
* resource.
*
* @return A pointer to the beginning of the data buffer.
*/
mem_t GetDataBuffer([in] PP_Resource frame);
/**
* Gets the size of the data buffer in bytes.
*
* @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame
* resource.
*
* @return The size of the data buffer in bytes.
*/
uint32_t GetDataBufferSize([in] PP_Resource frame);
};
|
