stm32f769/stm32f769i-disco/Src/pv_audio_rec.c File Reference

#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include "stm32f769i_discovery_audio.h"
#include "picovoice.h"

Include dependency graph for stm32f769/stm32f769i-disco/Src/pv_audio_rec.c:

Go to the source code of this file.

Macros
#define	AUDIO_IN_PCM_BUFFER_SIZE   (PV_AUDIO_REC_RECORD_BUFFER_SIZE)
#define	AUDIO_IN_PDM_BUFFER_SIZE   (AUDIO_IN_PCM_BUFFER_SIZE / 4)
#define	PV_AUDIO_REC_AUDIO_FREQUENCY   (16000U)
#define	PV_AUDIO_REC_CHANNEL_NUMBER   (2)
#define	PV_AUDIO_REC_RECORD_BUFFER_SIZE   (512)
#define	PV_AUDIO_REC_VOLUME_LEVEL   (100)
#define	PV_INT16_MAX   (32767)
#define	PV_INT16_MIN   (-32767 - 1)
#define	pv_int32_to_int16(N)   (((N)<(PV_INT16_MIN))?(PV_INT16_MIN):(((N)>(PV_INT16_MAX))?(PV_INT16_MAX):(N)))

Functions
	ALIGN_32BYTES (static int16_t ping_pong_buffer[2][PV_AUDIO_REC_RECORD_BUFFER_SIZE])
	ALIGN_32BYTES (static int32_t record_pdm_buffer[AUDIO_IN_PDM_BUFFER_SIZE])
	ALIGN_32BYTES (static uint16_t record_pcm_buffer[AUDIO_IN_PCM_BUFFER_SIZE])
void	BSP_AUDIO_IN_Error_CallBack (void)
	Audio IN Error callback function. More...
void	BSP_AUDIO_IN_HalfTransfer_CallBack (void)
	Manages the DMA Half Transfer complete event. More...
void	BSP_AUDIO_IN_TransferComplete_CallBack (void)
	User callback when record buffer is filled. More...
void	pv_audio_rec_deinit (void)
const int16_t *	pv_audio_rec_get_new_buffer (void)
pv_status_t	pv_audio_rec_init (void)
pv_status_t	pv_audio_rec_start (void)
pv_status_t	pv_audio_rec_stop (void)
static int16_t	pv_hpf (int16_t s_int16, int16_t s_old_int16)

Variables
static int32_t	buffer_index = 0
static int32_t	last_read_index = -1
struct {
uint32_t   audio_frequency
uint32_t   channel_number
int32_t   filter_old_output
bool   is_recording
uint32_t   record_buffer_size
uint16_t *   record_pcm_buffer
}	pv_audio_rec
static int32_t	read_index = 1
__IO uint32_t	SdmmcTest = 0
__IO uint32_t	SdramTest = 0
static int32_t	write_index = 0

Macro Definition Documentation

AUDIO_IN_PCM_BUFFER_SIZE

#define AUDIO_IN_PCM_BUFFER_SIZE   (PV_AUDIO_REC_RECORD_BUFFER_SIZE)

Definition at line 33 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

AUDIO_IN_PDM_BUFFER_SIZE

#define AUDIO_IN_PDM_BUFFER_SIZE   (AUDIO_IN_PCM_BUFFER_SIZE / 4)

Definition at line 34 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

PV_AUDIO_REC_AUDIO_FREQUENCY

#define PV_AUDIO_REC_AUDIO_FREQUENCY   (16000U)

Definition at line 28 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

PV_AUDIO_REC_CHANNEL_NUMBER

#define PV_AUDIO_REC_CHANNEL_NUMBER   (2)

Definition at line 29 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

PV_AUDIO_REC_RECORD_BUFFER_SIZE

#define PV_AUDIO_REC_RECORD_BUFFER_SIZE   (512)

Definition at line 30 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

PV_AUDIO_REC_VOLUME_LEVEL

#define PV_AUDIO_REC_VOLUME_LEVEL   (100)

Definition at line 31 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

PV_INT16_MAX

#define PV_INT16_MAX   (32767)

Definition at line 20 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

PV_INT16_MIN

#define PV_INT16_MIN   (-32767 - 1)

Definition at line 21 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

pv_int32_to_int16

#define pv_int32_to_int16

(

N

)

(((N)<(PV_INT16_MIN))?(PV_INT16_MIN):(((N)>(PV_INT16_MAX))?(PV_INT16_MAX):(N)))

Definition at line 23 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

Function Documentation

ALIGN_32BYTES() [1/3]

ALIGN_32BYTES

(

static int16_t

ping_pong_buffer[2][PV_AUDIO_REC_RECORD_BUFFER_SIZE]

)

ALIGN_32BYTES() [2/3]

ALIGN_32BYTES

(

static int32_t

record_pdm_buffer[AUDIO_IN_PDM_BUFFER_SIZE]

)

ALIGN_32BYTES() [3/3]

ALIGN_32BYTES

(

static uint16_t

record_pcm_buffer[AUDIO_IN_PCM_BUFFER_SIZE]

)

pv_audio_rec_deinit()

void pv_audio_rec_deinit

(

void

)

Definition at line 137 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

pv_audio_rec_get_new_buffer()

const int16_t* pv_audio_rec_get_new_buffer

(

void

)

Definition at line 85 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

pv_audio_rec_init()

pv_status_t pv_audio_rec_init

(

void

)

Definition at line 54 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

pv_audio_rec_start()

pv_status_t pv_audio_rec_start

(

void

)

Definition at line 68 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

pv_audio_rec_stop()

pv_status_t pv_audio_rec_stop

(

void

)

Definition at line 77 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

pv_hpf()

static int16_t pv_hpf ( int16_t  s_int16, int16_t  s_old_int16  )

inlinestatic

Definition at line 99 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

Variable Documentation

audio_frequency

uint32_t audio_frequency

Definition at line 47 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

buffer_index

int32_t buffer_index = 0

static

Definition at line 43 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

channel_number

uint32_t channel_number

Definition at line 46 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

filter_old_output

int32_t filter_old_output

Definition at line 51 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

is_recording

bool is_recording

Definition at line 50 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

last_read_index

int32_t last_read_index = -1

static

Definition at line 40 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

pv_audio_rec

struct { ... } pv_audio_rec

read_index

int32_t read_index = 1

static

Definition at line 41 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

record_buffer_size

uint32_t record_buffer_size

Definition at line 48 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

record_pcm_buffer

uint16_t* record_pcm_buffer

Definition at line 49 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

SdmmcTest

__IO uint32_t SdmmcTest = 0

Definition at line 25 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

SdramTest

__IO uint32_t SdramTest = 0

Definition at line 26 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.

write_index

int32_t write_index = 0

static

Definition at line 42 of file stm32f769/stm32f769i-disco/Src/pv_audio_rec.c.