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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 | 5 |
6 /** | 6 /** |
7 * This file defines the PPB_AudioConfig interface for establishing an | 7 * This file defines the PPB_AudioConfig interface for establishing an |
8 * audio configuration resource within the browser. | 8 * audio configuration resource within the browser. |
9 */ | 9 */ |
10 | 10 |
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34 enum PP_AudioSampleRate { | 34 enum PP_AudioSampleRate { |
35 PP_AUDIOSAMPLERATE_NONE = 0, | 35 PP_AUDIOSAMPLERATE_NONE = 0, |
36 PP_AUDIOSAMPLERATE_44100 = 44100, | 36 PP_AUDIOSAMPLERATE_44100 = 44100, |
37 PP_AUDIOSAMPLERATE_48000 = 48000 | 37 PP_AUDIOSAMPLERATE_48000 = 48000 |
38 } ; | 38 } ; |
39 | 39 |
40 | 40 |
41 /** | 41 /** |
42 * The <code>PPB_AudioConfig</code> interface contains pointers to several | 42 * The <code>PPB_AudioConfig</code> interface contains pointers to several |
43 * functions for establishing your audio configuration within the browser. | 43 * functions for establishing your audio configuration within the browser. |
44 * This interface only supports stereo * 16bit output. | 44 * This interface only supports 16-bit stereo output. |
45 * | 45 * |
46 * Refer to the | 46 * Refer to the |
47 * <a href="/chrome/nativeclient/docs/audio.html">Pepper | 47 * <a href="/chrome/nativeclient/docs/audio.html">Pepper |
48 * Audio API</a> for information on using this interface. | 48 * Audio API</a> for information on using this interface. |
49 */ | 49 */ |
50 [macro="PPB_AUDIO_CONFIG_INTERFACE"] | 50 [macro="PPB_AUDIO_CONFIG_INTERFACE"] |
51 interface PPB_AudioConfig { | 51 interface PPB_AudioConfig { |
52 /** | 52 /** |
53 * CreateStereo16bit() creates a 16 bit audio configuration resource. The | 53 * CreateStereo16bit() creates a 16 bit audio configuration resource. The |
54 * <code>sample_frame_count</code> should be the result of calling | 54 * <code>sample_frame_count</code> should be the result of calling |
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66 * <code>buffer16[3]</code> is the second right channel sample. | 66 * <code>buffer16[3]</code> is the second right channel sample. |
67 * ... | 67 * ... |
68 * <code>buffer16[2 * (sample_frame_count - 1)]</code> is the last left | 68 * <code>buffer16[2 * (sample_frame_count - 1)]</code> is the last left |
69 * channel sample. | 69 * channel sample. |
70 * <code>buffer16[2 * (sample_frame_count - 1) + 1]</code> is the last | 70 * <code>buffer16[2 * (sample_frame_count - 1) + 1]</code> is the last |
71 * right channel sample. | 71 * right channel sample. |
72 * Data will always be in the native endian format of the platform. | 72 * Data will always be in the native endian format of the platform. |
73 * | 73 * |
74 * @param[in] instance A <code>PP_Instance</code> identifying one instance | 74 * @param[in] instance A <code>PP_Instance</code> identifying one instance |
75 * of a module. | 75 * of a module. |
76 * @param[in] sample_rate A P<code>P_AudioSampleRate</code> which is either | 76 * @param[in] sample_rate A <code>PP_AudioSampleRate</code> which is either |
77 * <code>PP_AUDIOSAMPLERATE_44100</code> or | 77 * <code>PP_AUDIOSAMPLERATE_44100</code> or |
78 * <code>PP_AUDIOSAMPLERATE_48000</code>. | 78 * <code>PP_AUDIOSAMPLERATE_48000</code>. |
79 * @param[in] sample_frame_count A <code>uint32_t</code> frame count returned | 79 * @param[in] sample_frame_count A <code>uint32_t</code> frame count returned |
80 * from the <code>RecommendSampleFrameCount</code> function. | 80 * from the <code>RecommendSampleFrameCount</code> function. |
81 * | 81 * |
82 * @return A <code>PP_Resource</code> containing the | 82 * @return A <code>PP_Resource</code> containing the |
83 * <code>PPB_Audio_Config</code> if successful or a null resource if the | 83 * <code>PPB_Audio_Config</code> if successful or a null resource if the |
84 * sample frame count or bit rate are not supported. | 84 * sample frame count or bit rate are not supported. |
85 */ | 85 */ |
86 PP_Resource CreateStereo16Bit( | 86 PP_Resource CreateStereo16Bit( |
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150 * config resource. | 150 * config resource. |
151 * | 151 * |
152 * @return A <code>uint32_t</code> containing sample frame count or | 152 * @return A <code>uint32_t</code> containing sample frame count or |
153 * 0 if the resource is invalid. Refer to | 153 * 0 if the resource is invalid. Refer to |
154 * RecommendSampleFrameCount() for more on sample frame counts. | 154 * RecommendSampleFrameCount() for more on sample frame counts. |
155 */ | 155 */ |
156 uint32_t GetSampleFrameCount( | 156 uint32_t GetSampleFrameCount( |
157 [in] PP_Resource config); | 157 [in] PP_Resource config); |
158 }; | 158 }; |
159 | 159 |
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