63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
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#ifndef _AUDIO_HW_H
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#define _AUDIO_HW_H
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#include <stdint.h>
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#include "co_list.h"
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typedef void (*audio_hw_request_pcm_t)(void *pcm, uint32_t samples, uint8_t channels);
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typedef void (*audio_hw_receive_pcm_ntf_t)(uint32_t samples);
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typedef enum {
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AUDIO_HW_TYPE_I2S,
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AUDIO_HW_TYPE_CODEC,
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AUDIO_HW_TYPE_PDM,
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} audio_hw_type_t;
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typedef enum {
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AUDIO_HW_DIR_IN = 0x01,
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AUDIO_HW_DIR_OUT = 0x02,
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AUDIO_HW_DIR_INOUT = (AUDIO_HW_DIR_IN | AUDIO_HW_DIR_OUT),
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} audio_hw_dir_t;
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typedef struct {
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struct co_list_hdr hdr;
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audio_hw_type_t type;
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audio_hw_dir_t dir;
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uint8_t channels;
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uint32_t sample_rate;
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uint32_t base_addr;
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void *hw_handle;
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/* used for output mode */
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audio_hw_request_pcm_t request_handler;
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int16_t *pcm_out;
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/* used for input mode */
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uint32_t wr_ptr; /* unit is sample */
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struct co_list output_list;
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uint32_t pcm_samples; /* unit is sample */
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uint8_t *pcm;
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} audio_hw_t;
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typedef struct {
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struct co_list_hdr hdr;
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audio_hw_t *audio_hw;
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audio_hw_receive_pcm_ntf_t handler;
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uint32_t rd_ptr; /* unit is sample */
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} audio_hw_output_t;
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audio_hw_t *audio_hw_create(audio_hw_type_t type, audio_hw_request_pcm_t handler, uint32_t base_addr, audio_hw_dir_t dir, uint32_t sample_rate, uint8_t channels);
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void audio_hw_destroy(audio_hw_t *hw);
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audio_hw_output_t *audio_hw_output_add(audio_hw_t *hw, audio_hw_receive_pcm_ntf_t handler);
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void audio_hw_output_remove(audio_hw_t *hw, audio_hw_output_t *output);
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uint32_t audio_hw_read_pcm(audio_hw_output_t *output, void *pcm, uint32_t samples, uint8_t channels);
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#endif // _AUDIO_HW_H
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