| Eric Laurent | 135ad07 | 2010-05-21 06:05:13 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef ANDROID_AUDIOCOMMON_H_ |
| 18 | #define ANDROID_AUDIOCOMMON_H_ |
| 19 | |
| 20 | #if __cplusplus |
| 21 | extern "C" { |
| 22 | #endif |
| 23 | |
| 24 | ///////////////////////////////////////////////// |
| 25 | // Common definitions for PCM audio |
| 26 | ///////////////////////////////////////////////// |
| 27 | |
| 28 | |
| 29 | // PCM Sample format |
| 30 | enum audio_format_e { |
| 31 | PCM_FORMAT_S15 = 1, // PCM signed 16 bits, must be 1 for backward compatibility |
| 32 | PCM_FORMAT_U8 = 2, // PCM unsigned 8 bits, must be 2 for backward compatibility |
| 33 | PCM_FORMAT_S7_24 // signed 7.24 fixed point representation |
| 34 | }; |
| 35 | |
| 36 | // Channel mask definitions |
| 37 | enum audio_channels_e { |
| 38 | CHANNEL_FRONT_LEFT = 0x4, // front left channel |
| 39 | CHANNEL_FRONT_RIGHT = 0x8, // front right channel |
| 40 | CHANNEL_FRONT_CENTER = 0x10, // front center channel |
| 41 | CHANNEL_LOW_FREQUENCY = 0x20, // low frequency channel |
| 42 | CHANNEL_BACK_LEFT = 0x40, // back left channel |
| 43 | CHANNEL_BACK_RIGHT = 0x80, // back right channel |
| 44 | CHANNEL_FRONT_LEFT_OF_CENTER = 0x100, // front left of center channel |
| 45 | CHANNEL_FRONT_RIGHT_OF_CENTER = 0x200, // front right of center channel |
| 46 | CHANNEL_BACK_CENTER = 0x400, // back center channel |
| 47 | CHANNEL_MONO = CHANNEL_FRONT_LEFT, |
| 48 | CHANNEL_STEREO = (CHANNEL_FRONT_LEFT | CHANNEL_FRONT_RIGHT), |
| 49 | CHANNEL_QUAD = (CHANNEL_FRONT_LEFT | CHANNEL_FRONT_RIGHT | |
| 50 | CHANNEL_BACK_LEFT | CHANNEL_BACK_RIGHT), |
| 51 | CHANNEL_SURROUND = (CHANNEL_FRONT_LEFT | CHANNEL_FRONT_RIGHT | |
| 52 | CHANNEL_FRONT_CENTER | CHANNEL_BACK_CENTER), |
| 53 | CHANNEL_5POINT1 = (CHANNEL_FRONT_LEFT | CHANNEL_FRONT_RIGHT | |
| 54 | CHANNEL_FRONT_CENTER | CHANNEL_LOW_FREQUENCY | CHANNEL_BACK_LEFT | CHANNEL_BACK_RIGHT), |
| 55 | CHANNEL_7POINT1 = (CHANNEL_FRONT_LEFT | CHANNEL_FRONT_RIGHT | |
| 56 | CHANNEL_FRONT_CENTER | CHANNEL_LOW_FREQUENCY | CHANNEL_BACK_LEFT | CHANNEL_BACK_RIGHT | |
| 57 | CHANNEL_FRONT_LEFT_OF_CENTER | CHANNEL_FRONT_RIGHT_OF_CENTER), |
| 58 | }; |
| 59 | |
| 60 | // Render device definitions |
| 61 | enum audio_device_e { |
| 62 | DEVICE_EARPIECE = 0x1, // earpiece |
| 63 | DEVICE_SPEAKER = 0x2, // speaker |
| 64 | DEVICE_WIRED_HEADSET = 0x4, // wired headset, with microphone |
| 65 | DEVICE_WIRED_HEADPHONE = 0x8, // wired headphone, without microphone |
| 66 | DEVICE_BLUETOOTH_SCO = 0x10, // generic bluetooth SCO |
| 67 | DEVICE_BLUETOOTH_SCO_HEADSET = 0x20, // bluetooth SCO headset |
| 68 | DEVICE_BLUETOOTH_SCO_CARKIT = 0x40, // bluetooth SCO car kit |
| 69 | DEVICE_BLUETOOTH_A2DP = 0x80, // generic bluetooth A2DP |
| 70 | DEVICE_BLUETOOTH_A2DP_HEADPHONES = 0x100, // bluetooth A2DP headphones |
| 71 | DEVICE_BLUETOOTH_A2DP_SPEAKER = 0x200, // bluetooth A2DP speakers |
| 72 | DEVICE_AUX_DIGITAL = 0x400 // digital output |
| 73 | }; |
| 74 | |
| 75 | #if __cplusplus |
| 76 | } // extern "C" |
| 77 | #endif |
| 78 | |
| 79 | |
| 80 | #endif /*ANDROID_AUDIOCOMMON_H_*/ |