| /* |
| * Copyright (C) 2012 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_EFFECT_DOWNMIX_H_ |
| #define ANDROID_EFFECT_DOWNMIX_H_ |
| |
| #include <hardware/audio_effect.h> |
| |
| #if __cplusplus |
| extern "C" { |
| #endif |
| |
| #define EFFECT_UIID_DOWNMIX__ { 0x381e49cc, 0xa858, 0x4aa2, 0x87f6, \ |
| { 0xe8, 0x38, 0x8e, 0x76, 0x01, 0xb2 } } |
| static const effect_uuid_t EFFECT_UIID_DOWNMIX_ = EFFECT_UIID_DOWNMIX__; |
| const effect_uuid_t * const EFFECT_UIID_DOWNMIX = &EFFECT_UIID_DOWNMIX_; |
| |
| |
| /* enumerated parameter settings for downmix effect */ |
| typedef enum { |
| DOWNMIX_PARAM_TYPE |
| } downmix_params_t; |
| |
| |
| typedef enum { |
| DOWNMIX_TYPE_INVALID = -1, |
| // throw away the extra channels |
| DOWNMIX_TYPE_STRIP = 0, |
| // mix the extra channels with FL/FR |
| DOWNMIX_TYPE_FOLD = 1, |
| DOWNMIX_TYPE_CNT, |
| DOWNMIX_TYPE_LAST = DOWNMIX_TYPE_CNT - 1 |
| } downmix_type_t; |
| |
| #if __cplusplus |
| } // extern "C" |
| #endif |
| |
| |
| #endif /*ANDROID_EFFECT_DOWNMIX_H_*/ |