Upstream version 11.40.277.0
[platform/framework/web/crosswalk.git] / src / third_party / webrtc / modules / audio_device / include / audio_device_defines.h
1 /*
2  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10
11 #ifndef WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_DEFINES_H
12 #define WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_DEFINES_H
13
14 #include "webrtc/typedefs.h"
15
16 namespace webrtc {
17
18 static const int kAdmMaxDeviceNameSize = 128;
19 static const int kAdmMaxFileNameSize = 512;
20 static const int kAdmMaxGuidSize = 128;
21
22 static const int kAdmMinPlayoutBufferSizeMs = 10;
23 static const int kAdmMaxPlayoutBufferSizeMs = 250;
24
25 // ----------------------------------------------------------------------------
26 //  AudioDeviceObserver
27 // ----------------------------------------------------------------------------
28
29 class AudioDeviceObserver
30 {
31 public:
32     enum ErrorCode
33     {
34         kRecordingError = 0,
35         kPlayoutError = 1
36     };
37     enum WarningCode
38     {
39         kRecordingWarning = 0,
40         kPlayoutWarning = 1
41     };
42
43     virtual void OnErrorIsReported(const ErrorCode error) = 0;
44     virtual void OnWarningIsReported(const WarningCode warning) = 0;
45
46 protected:
47     virtual ~AudioDeviceObserver() {}
48 };
49
50 // ----------------------------------------------------------------------------
51 //  AudioTransport
52 // ----------------------------------------------------------------------------
53
54 class AudioTransport
55 {
56 public:
57     virtual int32_t RecordedDataIsAvailable(const void* audioSamples,
58                                             const uint32_t nSamples,
59                                             const uint8_t nBytesPerSample,
60                                             const uint8_t nChannels,
61                                             const uint32_t samplesPerSec,
62                                             const uint32_t totalDelayMS,
63                                             const int32_t clockDrift,
64                                             const uint32_t currentMicLevel,
65                                             const bool keyPressed,
66                                             uint32_t& newMicLevel) = 0;
67
68     virtual int32_t NeedMorePlayData(const uint32_t nSamples,
69                                      const uint8_t nBytesPerSample,
70                                      const uint8_t nChannels,
71                                      const uint32_t samplesPerSec,
72                                      void* audioSamples,
73                                      uint32_t& nSamplesOut,
74                                      int64_t* elapsed_time_ms,
75                                      int64_t* ntp_time_ms) = 0;
76
77     // Method to pass captured data directly and unmixed to network channels.
78     // |channel_ids| contains a list of VoE channels which are the
79     // sinks to the capture data. |audio_delay_milliseconds| is the sum of
80     // recording delay and playout delay of the hardware. |current_volume| is
81     // in the range of [0, 255], representing the current microphone analog
82     // volume. |key_pressed| is used by the typing detection.
83     // |need_audio_processing| specify if the data needs to be processed by APM.
84     // Currently WebRtc supports only one APM, and Chrome will make sure only
85     // one stream goes through APM. When |need_audio_processing| is false, the
86     // values of |audio_delay_milliseconds|, |current_volume| and |key_pressed|
87     // will be ignored.
88     // The return value is the new microphone volume, in the range of |0, 255].
89     // When the volume does not need to be updated, it returns 0.
90     // TODO(xians): Remove this interface after Chrome and Libjingle switches
91     // to OnData().
92     virtual int OnDataAvailable(const int voe_channels[],
93                                 int number_of_voe_channels,
94                                 const int16_t* audio_data,
95                                 int sample_rate,
96                                 int number_of_channels,
97                                 int number_of_frames,
98                                 int audio_delay_milliseconds,
99                                 int current_volume,
100                                 bool key_pressed,
101                                 bool need_audio_processing) { return 0; }
102
103     // Method to pass the captured audio data to the specific VoE channel.
104     // |voe_channel| is the id of the VoE channel which is the sink to the
105     // capture data.
106     // TODO(xians): Remove this interface after Libjingle switches to
107     // PushCaptureData().
108     virtual void OnData(int voe_channel, const void* audio_data,
109                         int bits_per_sample, int sample_rate,
110                         int number_of_channels,
111                         int number_of_frames) {}
112
113     // Method to push the captured audio data to the specific VoE channel.
114     // The data will not undergo audio processing.
115     // |voe_channel| is the id of the VoE channel which is the sink to the
116     // capture data.
117     // TODO(xians): Make the interface pure virtual after Libjingle
118     // has its implementation.
119     virtual void PushCaptureData(int voe_channel, const void* audio_data,
120                                  int bits_per_sample, int sample_rate,
121                                  int number_of_channels,
122                                  int number_of_frames) {}
123
124     // Method to pull mixed render audio data from all active VoE channels.
125     // The data will not be passed as reference for audio processing internally.
126     // TODO(xians): Support getting the unmixed render data from specific VoE
127     // channel.
128     virtual void PullRenderData(int bits_per_sample, int sample_rate,
129                                 int number_of_channels, int number_of_frames,
130                                 void* audio_data,
131                                 int64_t* elapsed_time_ms,
132                                 int64_t* ntp_time_ms) {}
133
134 protected:
135     virtual ~AudioTransport() {}
136 };
137
138 }  // namespace webrtc
139
140 #endif  // WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_DEFINES_H