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90 lines
3.0 KiB
90 lines
3.0 KiB
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef OFFLOAD_EFFECT_BUNDLE_H
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#define OFFLOAD_EFFECT_BUNDLE_H
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#include <tinyalsa/asoundlib.h>
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#include <sound/audio_effects.h>
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#include "effect_api.h"
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/* Retry for delay for mixer open */
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#define RETRY_NUMBER 10
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#define RETRY_US 500000
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#define MIXER_CARD 0
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#define SOUND_CARD 0
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extern const struct effect_interface_s effect_interface;
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typedef struct output_context_s output_context_t;
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typedef struct effect_ops_s effect_ops_t;
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typedef struct effect_context_s effect_context_t;
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struct output_context_s {
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/* node in active_outputs_list */
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struct listnode outputs_list_node;
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/* io handle */
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audio_io_handle_t handle;
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/* list of effects attached to this output */
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struct listnode effects_list;
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/* pcm device id */
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int pcm_device_id;
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struct mixer *mixer;
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struct mixer_ctl *ctl;
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};
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/* effect specific operations.
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* Only the init() and process() operations must be defined.
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* Others are optional.
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*/
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struct effect_ops_s {
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int (*init)(effect_context_t *context);
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int (*release)(effect_context_t *context);
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int (*reset)(effect_context_t *context);
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int (*enable)(effect_context_t *context);
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int (*start)(effect_context_t *context, output_context_t *output);
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int (*stop)(effect_context_t *context, output_context_t *output);
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int (*disable)(effect_context_t *context);
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int (*process)(effect_context_t *context, audio_buffer_t *in, audio_buffer_t *out);
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int (*set_parameter)(effect_context_t *context, effect_param_t *param, uint32_t size);
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int (*get_parameter)(effect_context_t *context, effect_param_t *param, uint32_t *size);
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int (*set_device)(effect_context_t *context, uint32_t device);
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int (*command)(effect_context_t *context, uint32_t cmdCode, uint32_t cmdSize,
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void *pCmdData, uint32_t *replySize, void *pReplyData);
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};
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struct effect_context_s {
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const struct effect_interface_s *itfe;
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/* node in created_effects_list */
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struct listnode effects_list_node;
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/* node in output_context_t.effects_list */
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struct listnode output_node;
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effect_config_t config;
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const effect_descriptor_t *desc;
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/* io handle of the output the effect is attached to */
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audio_io_handle_t out_handle;
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uint32_t state;
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bool offload_enabled;
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effect_ops_t ops;
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};
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int set_config(effect_context_t *context, effect_config_t *config);
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bool effect_is_active(effect_context_t *context);
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#endif /* OFFLOAD_EFFECT_BUNDLE_H */
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