88 lines
3.4 KiB
C
Executable File
88 lines
3.4 KiB
C
Executable File
/*
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* Copyright (C) 2017 XRADIO TECHNOLOGY CO., LTD. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of XRADIO TECHNOLOGY CO., LTD. nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _AUDIO_PCM_H_
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#define _AUDIO_PCM_H_
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#include "sys/list.h"
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#include "driver/chip/hal_snd_card.h"
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/* Audio filter attribute define */
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typedef enum {
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AUDIO_FILTER_DRC = 0, //must start from 0, and the other follow in sequence
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AUDIO_FILTER_EQ,
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AUDIO_FILTER_MAX,
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} Audio_Filter_Type;
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/* Audio filter stream direction define */
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#define AUDIO_FILTER_DIR(fil) ((fil == AUDIO_FILTER_DRC || fil == AUDIO_FILTER_EQ) ? PCM_OUT :\
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/*(fil == AUDIO_FILTER_***) ? PCM_IN :*/ \
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0xff)
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/* Audio filter function define */
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struct audio_filter {
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//audio filter control
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void *handle;
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void *user_params;
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uint8_t user_params_size;
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Snd_Card_Num card_num;
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const char *filter_name;
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Audio_Filter_Type filter_type;
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//audio filter interface
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void* (*filter_create)(void *params);
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void (*filter_destroy)(void *handle);
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void (*filter_process)(void *handle, short *buf, int sample_nums);
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//audio filter node
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struct list_head node;
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};
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/********************************* Audio filter interface *************************************/
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int audio_filter_register(Snd_Card_Num card_num, Audio_Filter_Type filter_type, void *user_params);
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int audio_filter_unregister(Snd_Card_Num card_num, Audio_Filter_Type filter_type);
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/********************************* Audio PCM interface *************************************/
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int snd_pcm_init(void);
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int snd_pcm_deinit(void);
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int snd_pcm_write(Snd_Card_Num card_num, void *data, uint32_t count);
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int snd_pcm_read(Snd_Card_Num card_num, void *data, uint32_t count);
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int snd_pcm_flush(Snd_Card_Num card_num);
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int snd_pcm_open(Snd_Card_Num card_num, Audio_Stream_Dir stream_dir, struct pcm_config *pcm_cfg);
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int snd_pcm_close(Snd_Card_Num card_num, Audio_Stream_Dir stream_dir);
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/**********************************************************************************************/
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#endif
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