ppapi/api/ppb_audio_frame.idl - Issue 156863005: [PPAPI][MediaStream] Rename AudioFrame to AudioBuffer

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Issue 156863005: [PPAPI][MediaStream] Rename AudioFrame to AudioBuffer (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@frame_to_buffer

Patch Set: Fix build errors Created 6 years, 10 months ago

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1 /* Copyright 2014 The Chromium Authors. All rights reserved.

2 * Use of this source code is governed by a BSD-style license that can be

3 * found in the LICENSE file.

4 */

5

6 /**

7 * Defines the <code>PPB_AudioFrame</code> interface.

8 */

9

10 [generate_thunk]

11

12 label Chrome {

13 [channel=dev] M34 = 0.1

14 };

15

16 /**

17 * PP_AudioFrame_SampleRate is an enumeration of the different audio sample

18 * rates.

19 */

20 enum PP_AudioFrame_SampleRate {

21 PP_AUDIOFRAME_SAMPLERATE_UNKNOWN = 0,

22 PP_AUDIOFRAME_SAMPLERATE_8000 = 8000,

23 PP_AUDIOFRAME_SAMPLERATE_44100 = 44100

24 };

25

26 /**

27 * PP_AudioFrame_SampleSize is an enumeration of the different audio sample

28 * sizes.

29 */

30 enum PP_AudioFrame_SampleSize {

31 PP_AUDIOFRAME_SAMPLESIZE_UNKNOWN = 0,

32 PP_AUDIOFRAME_SAMPLESIZE_16_BITS = 2

33 };

34

35 interface PPB_AudioFrame {

36 /**

37 * Determines if a resource is an AudioFrame resource.

38 *

39 * @param[in] resource The <code>PP_Resource</code> to test.

40 *

41 * @return A <code>PP_Bool</code> with <code>PP_TRUE</code> if the given

42 * resource is an AudioFrame resource or <code>PP_FALSE</code> otherwise.

43 */

44 PP_Bool IsAudioFrame([in] PP_Resource resource);

45

46 /**

47 * Gets the timestamp of the audio frame.

48 *

49 * @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame

50 * resource.

51 *

52 * @return A <code>PP_TimeDelta</code> containing the timestamp of the audio

53 * frame. Given in seconds since the start of the containing audio stream.

54 */

55 [on_failure=0.0]

56 PP_TimeDelta GetTimestamp([in] PP_Resource frame);

57

58 /**

59 * Sets the timestamp of the audio frame.

60 *

61 * @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame

62 * resource.

63 * @param[in] timestamp A <code>PP_TimeDelta</code> containing the timestamp

64 * of the audio frame. Given in seconds since the start of the containing

65 * audio stream.

66 */

67 void SetTimestamp([in] PP_Resource frame, [in] PP_TimeDelta timestamp);

68

69 /**

70 * Gets the sample rate of the audio frame.

71 *

72 * @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame

73 * resource.

74 *

75 * @return The sample rate of the audio frame.

76 */

77 [on_failure=PP_AUDIOFRAME_SAMPLERATE_UNKNOWN]

78 PP_AudioFrame_SampleRate GetSampleRate([in] PP_Resource frame);

79

80 /**

81 * Gets the sample size of the audio frame.

82 *

83 * @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame

84 * resource.

85 *

86 * @return The sample size of the audio frame.

87 */

88 [on_failure=PP_AUDIOFRAME_SAMPLESIZE_UNKNOWN]

89 PP_AudioFrame_SampleSize GetSampleSize([in] PP_Resource frame);

90

91 /**

92 * Gets the number of channels in the audio frame.

93 *

94 * @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame

95 * resource.

96 *

97 * @return The number of channels in the audio frame.

98 */

99 uint32_t GetNumberOfChannels([in] PP_Resource frame);

100

101 /**

102 * Gets the number of samples in the audio frame.

103 *

104 * @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame

105 * resource.

106 *

107 * @return The number of samples in the audio frame.

108 * For example, at a sampling rate of 44,100 Hz in stereo audio, a frame

109 * containing 4410 * 2 samples would have a duration of 100 milliseconds.

110 */

111 uint32_t GetNumberOfSamples([in] PP_Resource frame);

112

113 /**

114 * Gets the data buffer containing the audio frame samples.

115 *

116 * @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame

117 * resource.

118 *

119 * @return A pointer to the beginning of the data buffer.

120 */

121 mem_t GetDataBuffer([in] PP_Resource frame);

122

123 /**

124 * Gets the size of the data buffer in bytes.

125 *

126 * @param[in] frame A <code>PP_Resource</code> corresponding to an audio frame

127 * resource.

128 *

129 * @return The size of the data buffer in bytes.

130 */

131 uint32_t GetDataBufferSize([in] PP_Resource frame);

132 };

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