ra8_audio_source_pdm.h

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#pragma once
 
#include <stdint.h>
 
#include "ra8_audio.h"
#include "ra8_pdm.h"

typedef struct {
  ra8_pdm_channel_cfg_t pdm;               
  uint32_t              sample_rate_hz;    
  uint32_t              samples_per_frame; 
  uint32_t              settle_ms;         
  uint32_t              discard_samples;   
  uint32_t              poll_attempts;     
  uint8_t               channel;           
  uint8_t               valid_bits;        
  uint8_t               irq_priority;      
} ra8_audio_source_pdm_cfg_t;

typedef struct {
  ra8_audio_source_info_t    info;                
  uint32_t                   poll_attempts;       
  void*                      stream_data;         
  ra8_audio_frame_callback_t stream_callback;     
  void*                      stream_ctx;          
  uint32_t                   stream_filled;       
  uint32_t                   stream_timestamp_ms; 
  uint8_t                    channel;             
  uint8_t                    irq_priority;        
  bool                       initialized;         
  bool                       streaming;           
} ra8_audio_source_pdm_state_t;

[[nodiscard]] ra8_err_t ra8_audio_source_pdm_init(ra8_audio_source_t*               source,
                                                  ra8_audio_source_pdm_state_t*     state,
                                                  const ra8_audio_source_pdm_cfg_t* cfg);