buff_player.c File Reference

Bufferization player.

Copyright (c) 2009-2018 Microchip Technology Inc. and its subsidiaries.

#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include "board.h"
#include "compiler.h"
#include "audio_mixer.h"
#include "buff_player.h"
#include "conf_buff_player.h"

Data Structures
struct	buff_player_pcm_buf_fifo_t
struct	buff_player_pcm_buf_t

Macros
#define	BUFF_PLAYER_MAX_BUF_CNT   64

Functions
void	buff_player_close (void)
bool	buff_player_create (uint8_t nb_buffers, size_t buffer_size)
void	buff_player_dacs_end_of_pcm_buf (void)
void	buff_player_dacs_flush (bool force)
bool	buff_player_dacs_output (void *sample_buffer, size_t sample_length)
void	buff_player_dacs_setup (uint32_t sample_rate_hz, uint8_t num_channels, uint8_t bits_per_sample, bool swap_channels)
static buff_player_pcm_buf_t *	buff_player_get_first_pcm_buf (void)
static unsigned int	buff_player_get_first_pcm_buf_idx (void)
static buff_player_pcm_buf_t *	buff_player_get_last_pcm_buf (void)
static unsigned int	buff_player_get_last_pcm_buf_idx (void)
static size_t	buff_player_get_pcm_buf_fifo_size (void)
static buff_player_pcm_buf_t *	buff_player_get_reload_pcm_buf (void)
static unsigned int	buff_player_get_reload_pcm_buf_idx (void)
static buff_player_pcm_buf_t *	buff_player_get_wr_pcm_buf (void)
static unsigned int	buff_player_get_wr_pcm_buf_idx (void)
static bool	buff_player_is_pcm_buf_fifo_empty (void)
static bool	buff_player_is_pcm_buf_fifo_full (void)
static bool	buff_player_is_pcm_buf_fifo_reloadable (void)
void *	buff_player_malloc (size_t buffer_size)
void	buff_player_mute_audio (bool mute)
static bool	buff_player_peek_reload_pcm_buf (buff_player_pcm_buf_t *pcm_buf)
static bool	buff_player_put_pcm_buf (void *sample_buffer, size_t sample_length)
static bool	buff_player_remove_used_pcm_buf (void)

Variables
static buff_player_pcm_buf_fifo_t *	buff_player_pcm_buf_fifo = NULL

#define BUFF_PLAYER_MAX_BUF_CNT   64

Referenced by buff_player_get_first_pcm_buf_idx(), buff_player_get_last_pcm_buf_idx(), buff_player_get_pcm_buf_fifo_size(), buff_player_get_reload_pcm_buf_idx(), buff_player_get_wr_pcm_buf_idx(), buff_player_is_pcm_buf_fifo_full(), buff_player_put_pcm_buf(), and buff_player_remove_used_pcm_buf().

void buff_player_close

(

void

)

References NULL.

bool buff_player_create	(	uint8_t	nb_buffers,
		size_t	buffer_size
	)

void buff_player_dacs_end_of_pcm_buf

(

void

)

References audio_mixer_dacs_output_direct(), buff_player_peek_reload_pcm_buf(), buff_player_remove_used_pcm_buf(), buff_player_pcm_buf_t::sample_buffer, and buff_player_pcm_buf_t::sample_length.

Referenced by audio_mixer_callback().

void buff_player_dacs_flush

(

bool

force

)

References audio_mixer_dacs_flush_direct(), and buff_player_is_pcm_buf_fifo_empty().

Referenced by buff_player_mute_audio().

bool buff_player_dacs_output	(	void *	sample_buffer,
		size_t	sample_length
	)

References audio_mixer_dacs_output_direct(), buff_player_is_pcm_buf_fifo_full(), buff_player_put_pcm_buf(), and NULL.

void buff_player_dacs_setup	(	uint32_t	sample_rate_hz,
		uint8_t	num_channels,
		uint8_t	bits_per_sample,
		bool	swap_channels
	)

References audio_mixer_dacs_setup_direct().

static buff_player_pcm_buf_t* buff_player_get_first_pcm_buf ( void  )

static

References buff_player_get_first_pcm_buf_idx(), and buff_player_pcm_buf_fifo_t::pcm_buf.

Referenced by buff_player_malloc().

static unsigned int buff_player_get_first_pcm_buf_idx ( void  )

static

References BUFF_PLAYER_MAX_BUF_CNT, and buff_player_pcm_buf_fifo_t::rd_idx.

Referenced by buff_player_get_first_pcm_buf().

static buff_player_pcm_buf_t* buff_player_get_last_pcm_buf ( void  )

static

References buff_player_get_last_pcm_buf_idx(), and buff_player_pcm_buf_fifo_t::pcm_buf.

Referenced by buff_player_malloc().

static unsigned int buff_player_get_last_pcm_buf_idx ( void  )

static

References BUFF_PLAYER_MAX_BUF_CNT, and buff_player_pcm_buf_fifo_t::wr_idx.

Referenced by buff_player_get_last_pcm_buf().

static size_t buff_player_get_pcm_buf_fifo_size ( void  )

static

References BUFF_PLAYER_MAX_BUF_CNT, buff_player_pcm_buf_fifo, buff_player_pcm_buf_fifo_t::rd_idx, and buff_player_pcm_buf_fifo_t::wr_idx.

Referenced by buff_player_is_pcm_buf_fifo_empty(), buff_player_is_pcm_buf_fifo_full(), and buff_player_is_pcm_buf_fifo_reloadable().

static buff_player_pcm_buf_t* buff_player_get_reload_pcm_buf ( void  )

static

References buff_player_get_reload_pcm_buf_idx(), and buff_player_pcm_buf_fifo_t::pcm_buf.

Referenced by buff_player_peek_reload_pcm_buf().

static unsigned int buff_player_get_reload_pcm_buf_idx ( void  )

static

References BUFF_PLAYER_MAX_BUF_CNT, and buff_player_pcm_buf_fifo_t::rd_idx.

Referenced by buff_player_get_reload_pcm_buf().

static buff_player_pcm_buf_t* buff_player_get_wr_pcm_buf ( void  )

static

References buff_player_get_wr_pcm_buf_idx(), and buff_player_pcm_buf_fifo_t::pcm_buf.

Referenced by buff_player_put_pcm_buf().

static unsigned int buff_player_get_wr_pcm_buf_idx ( void  )

static

References BUFF_PLAYER_MAX_BUF_CNT, and buff_player_pcm_buf_fifo_t::wr_idx.

Referenced by buff_player_get_wr_pcm_buf().

static bool buff_player_is_pcm_buf_fifo_empty ( void  )

static

References buff_player_get_pcm_buf_fifo_size().

Referenced by buff_player_dacs_flush(), buff_player_malloc(), and buff_player_remove_used_pcm_buf().

static bool buff_player_is_pcm_buf_fifo_full ( void  )

static

References buff_player_get_pcm_buf_fifo_size(), and BUFF_PLAYER_MAX_BUF_CNT.

Referenced by buff_player_dacs_output(), buff_player_malloc(), and buff_player_put_pcm_buf().

static bool buff_player_is_pcm_buf_fifo_reloadable ( void  )

static

References buff_player_get_pcm_buf_fifo_size().

Referenced by buff_player_peek_reload_pcm_buf().

void* buff_player_malloc

(

size_t

buffer_size

)

References buff_player_get_first_pcm_buf(), buff_player_get_last_pcm_buf(), buff_player_is_pcm_buf_fifo_empty(), buff_player_is_pcm_buf_fifo_full(), buff_player_pcm_buf_fifo, NULL, buff_player_pcm_buf_t::sample_buffer, sample_buffer, buff_player_pcm_buf_t::sample_length, and sample_length.

void buff_player_mute_audio

(

bool

mute

)

References audio_mixer_mute_audio_direct(), and buff_player_dacs_flush().

static bool buff_player_peek_reload_pcm_buf ( buff_player_pcm_buf_t *  pcm_buf )

static

References buff_player_get_reload_pcm_buf(), buff_player_is_pcm_buf_fifo_reloadable(), and buff_player_pcm_buf_fifo.

Referenced by buff_player_dacs_end_of_pcm_buf().

static bool buff_player_put_pcm_buf ( void *  sample_buffer, size_t  sample_length  )

static

References buff_player_get_wr_pcm_buf(), buff_player_is_pcm_buf_fifo_full(), BUFF_PLAYER_MAX_BUF_CNT, buff_player_pcm_buf_fifo, buff_player_pcm_buf_t::sample_buffer, sample_buffer, buff_player_pcm_buf_t::sample_length, sample_length, and buff_player_pcm_buf_fifo_t::wr_idx.

Referenced by buff_player_dacs_output().

static bool buff_player_remove_used_pcm_buf ( void  )

static

References buff_player_is_pcm_buf_fifo_empty(), BUFF_PLAYER_MAX_BUF_CNT, buff_player_pcm_buf_fifo, and buff_player_pcm_buf_fifo_t::rd_idx.

Referenced by buff_player_dacs_end_of_pcm_buf().

buff_player_pcm_buf_fifo_t* buff_player_pcm_buf_fifo = NULL

static

Referenced by buff_player_get_pcm_buf_fifo_size(), buff_player_malloc(), buff_player_peek_reload_pcm_buf(), buff_player_put_pcm_buf(), and buff_player_remove_used_pcm_buf().