/* * Copyright (c) 2013, The Linux Foundation. All rights reserved. * Not a contribution. * * Copyright (C) 2013 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 */