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/*
* Copyright (C) 2014 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 OFFLOAD_EFFECT_BUNDLE_H
#define OFFLOAD_EFFECT_BUNDLE_H
#include <tinyalsa/asoundlib.h>
#include <sound/audio_effects.h>
#include "effect_api.h"
/* Retry for delay for mixer open */
#define RETRY_NUMBER 10
#define RETRY_US 500000
#define MIXER_CARD 0
#define SOUND_CARD 0
extern const struct effect_interface_s effect_interface;
typedef struct output_context_s output_context_t;
typedef struct effect_ops_s effect_ops_t;
typedef struct effect_context_s effect_context_t;
struct output_context_s {
/* node in active_outputs_list */
struct listnode outputs_list_node;
/* io handle */
audio_io_handle_t handle;
/* list of effects attached to this output */
struct listnode effects_list;
/* pcm device id */
int pcm_device_id;
struct mixer *mixer;
struct mixer_ctl *ctl;
};
/* effect specific operations.
* Only the init() and process() operations must be defined.
* Others are optional.
*/
struct effect_ops_s {
int (*init)(effect_context_t *context);
int (*release)(effect_context_t *context);
int (*reset)(effect_context_t *context);
int (*enable)(effect_context_t *context);
int (*start)(effect_context_t *context, output_context_t *output);
int (*stop)(effect_context_t *context, output_context_t *output);
int (*disable)(effect_context_t *context);
int (*process)(effect_context_t *context, audio_buffer_t *in, audio_buffer_t *out);
int (*set_parameter)(effect_context_t *context, effect_param_t *param, uint32_t size);
int (*get_parameter)(effect_context_t *context, effect_param_t *param, uint32_t *size);
int (*set_device)(effect_context_t *context, uint32_t device);
int (*command)(effect_context_t *context, uint32_t cmdCode, uint32_t cmdSize,
void *pCmdData, uint32_t *replySize, void *pReplyData);
};
struct effect_context_s {
const struct effect_interface_s *itfe;
/* node in created_effects_list */
struct listnode effects_list_node;
/* node in output_context_t.effects_list */
struct listnode output_node;
effect_config_t config;
const effect_descriptor_t *desc;
/* io handle of the output the effect is attached to */
audio_io_handle_t out_handle;
uint32_t state;
bool offload_enabled;
effect_ops_t ops;
};
int set_config(effect_context_t *context, effect_config_t *config);
bool effect_is_active(effect_context_t *context);
#endif /* OFFLOAD_EFFECT_BUNDLE_H */
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