81 lines
3.5 KiB
C
81 lines
3.5 KiB
C
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/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_AUDIOCOMMON_H_
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#define ANDROID_AUDIOCOMMON_H_
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#if __cplusplus
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extern "C" {
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#endif
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/////////////////////////////////////////////////
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// Common definitions for PCM audio
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/////////////////////////////////////////////////
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// PCM Sample format
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enum audio_format_e {
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PCM_FORMAT_S15 = 1, // PCM signed 16 bits, must be 1 for backward compatibility
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PCM_FORMAT_U8 = 2, // PCM unsigned 8 bits, must be 2 for backward compatibility
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PCM_FORMAT_S7_24 // signed 7.24 fixed point representation
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};
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// Channel mask definitions
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enum audio_channels_e {
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CHANNEL_FRONT_LEFT = 0x4, // front left channel
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CHANNEL_FRONT_RIGHT = 0x8, // front right channel
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CHANNEL_FRONT_CENTER = 0x10, // front center channel
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CHANNEL_LOW_FREQUENCY = 0x20, // low frequency channel
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CHANNEL_BACK_LEFT = 0x40, // back left channel
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CHANNEL_BACK_RIGHT = 0x80, // back right channel
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CHANNEL_FRONT_LEFT_OF_CENTER = 0x100, // front left of center channel
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CHANNEL_FRONT_RIGHT_OF_CENTER = 0x200, // front right of center channel
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CHANNEL_BACK_CENTER = 0x400, // back center channel
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CHANNEL_MONO = CHANNEL_FRONT_LEFT,
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CHANNEL_STEREO = (CHANNEL_FRONT_LEFT | CHANNEL_FRONT_RIGHT),
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CHANNEL_QUAD = (CHANNEL_FRONT_LEFT | CHANNEL_FRONT_RIGHT |
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CHANNEL_BACK_LEFT | CHANNEL_BACK_RIGHT),
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CHANNEL_SURROUND = (CHANNEL_FRONT_LEFT | CHANNEL_FRONT_RIGHT |
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CHANNEL_FRONT_CENTER | CHANNEL_BACK_CENTER),
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CHANNEL_5POINT1 = (CHANNEL_FRONT_LEFT | CHANNEL_FRONT_RIGHT |
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CHANNEL_FRONT_CENTER | CHANNEL_LOW_FREQUENCY | CHANNEL_BACK_LEFT | CHANNEL_BACK_RIGHT),
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CHANNEL_7POINT1 = (CHANNEL_FRONT_LEFT | CHANNEL_FRONT_RIGHT |
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CHANNEL_FRONT_CENTER | CHANNEL_LOW_FREQUENCY | CHANNEL_BACK_LEFT | CHANNEL_BACK_RIGHT |
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CHANNEL_FRONT_LEFT_OF_CENTER | CHANNEL_FRONT_RIGHT_OF_CENTER),
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};
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// Render device definitions
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enum audio_device_e {
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DEVICE_EARPIECE = 0x1, // earpiece
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DEVICE_SPEAKER = 0x2, // speaker
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DEVICE_WIRED_HEADSET = 0x4, // wired headset, with microphone
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DEVICE_WIRED_HEADPHONE = 0x8, // wired headphone, without microphone
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DEVICE_BLUETOOTH_SCO = 0x10, // generic bluetooth SCO
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DEVICE_BLUETOOTH_SCO_HEADSET = 0x20, // bluetooth SCO headset
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DEVICE_BLUETOOTH_SCO_CARKIT = 0x40, // bluetooth SCO car kit
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DEVICE_BLUETOOTH_A2DP = 0x80, // generic bluetooth A2DP
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DEVICE_BLUETOOTH_A2DP_HEADPHONES = 0x100, // bluetooth A2DP headphones
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DEVICE_BLUETOOTH_A2DP_SPEAKER = 0x200, // bluetooth A2DP speakers
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DEVICE_AUX_DIGITAL = 0x400 // digital output
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};
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#if __cplusplus
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} // extern "C"
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#endif
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#endif /*ANDROID_AUDIOCOMMON_H_*/
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