1 /* 2 * Copyright (C) 2014 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 OFFLOAD_EQUALIZER_H_ 18 #define OFFLOAD_EQUALIZER_H_ 19 20 #include "bundle.h" 21 22 #define NUM_EQ_BANDS 5 23 #define INVALID_PRESET -2 24 #define PRESET_CUSTOM -1 25 26 extern const effect_descriptor_t equalizer_descriptor; 27 28 typedef struct equalizer_context_s { 29 effect_context_t common; 30 31 int preset; 32 int band_levels[NUM_EQ_BANDS]; 33 34 // Offload vars 35 struct mixer_ctl *ctl; 36 uint32_t device; 37 struct eq_params offload_eq; 38 } equalizer_context_t; 39 40 int equalizer_get_parameter(effect_context_t *context, effect_param_t *p, 41 uint32_t *size); 42 43 int equalizer_set_parameter(effect_context_t *context, effect_param_t *p, 44 uint32_t size); 45 46 int equalizer_set_device(effect_context_t *context, uint32_t device); 47 48 int equalizer_reset(effect_context_t *context); 49 50 int equalizer_init(effect_context_t *context); 51 52 int equalizer_enable(effect_context_t *context); 53 54 int equalizer_disable(effect_context_t *context); 55 56 int equalizer_start(effect_context_t *context, output_context_t *output); 57 58 int equalizer_stop(effect_context_t *context, output_context_t *output); 59 60 #endif /*OFFLOAD_EQUALIZER_H_*/ 61