| /* |
| * 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_*/ |
