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