alsa_qsa.c File Reference

#include <sys/asoundlib.h>
#include <retro_math.h>
#include "../audio_driver.h"

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Classes
struct	alsa

Macros
#define	ALSA_PCM_NEW_HW_PARAMS_API
#define	ALSA_PCM_NEW_SW_PARAMS_API
#define	MAX_FRAG_SIZE   3072
#define	DEFAULT_RATE   48000
#define	CHANNELS   2

Typedefs
typedef struct alsa	alsa_t
typedef long	snd_pcm_sframes_t

Functions
static void *	alsa_qsa_init (const char *device, unsigned rate, unsigned latency, unsigned block_frames, unsigned *new_rate)
static int	check_pcm_status (void *data, int channel_type)
static ssize_t	alsa_qsa_write (void *data, const void *buf, size_t size)
static bool	alsa_qsa_stop (void *data)
static bool	alsa_qsa_alive (void *data)
static bool	alsa_qsa_start (void *data, bool is_shutdown)
static void	alsa_qsa_set_nonblock_state (void *data, bool state)
static bool	alsa_qsa_use_float (void *data)
static void	alsa_qsa_free (void *data)
static size_t	alsa_qsa_write_avail (void *data)
static size_t	alsa_qsa_buffer_size (void *data)

Variables
audio_driver_t	audio_alsa

Macro Definition Documentation

ALSA_PCM_NEW_HW_PARAMS_API

#define ALSA_PCM_NEW_HW_PARAMS_API

ALSA_PCM_NEW_SW_PARAMS_API

#define ALSA_PCM_NEW_SW_PARAMS_API

CHANNELS

#define CHANNELS   2

DEFAULT_RATE

#define DEFAULT_RATE   48000

MAX_FRAG_SIZE

#define MAX_FRAG_SIZE   3072

Typedef Documentation

alsa_t

typedef struct alsa alsa_t

snd_pcm_sframes_t

typedef long snd_pcm_sframes_t

Function Documentation

alsa_qsa_alive()

static bool alsa_qsa_alive ( void *  data )

static

alsa_qsa_buffer_size()

static size_t alsa_qsa_buffer_size ( void *  data )

static

alsa_qsa_free()

static void alsa_qsa_free ( void *  data )

static

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alsa_qsa_init()

static void* alsa_qsa_init ( const char *  device, unsigned  rate, unsigned  latency, unsigned  block_frames, unsigned *  new_rate  )

static

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alsa_qsa_set_nonblock_state()

static void alsa_qsa_set_nonblock_state ( void *  data, bool  state  )

static

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alsa_qsa_start()

static bool alsa_qsa_start ( void *  data, bool  is_shutdown  )

static

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alsa_qsa_stop()

static bool alsa_qsa_stop ( void *  data )

static

alsa_qsa_use_float()

static bool alsa_qsa_use_float ( void *  data )

static

alsa_qsa_write()

static ssize_t alsa_qsa_write ( void *  data, const void *  buf, size_t  size  )

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alsa_qsa_write_avail()

static size_t alsa_qsa_write_avail ( void *  data )

static

check_pcm_status()

static int check_pcm_status ( void *  data, int  channel_type  )

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Variable Documentation

audio_alsa

audio_driver_t audio_alsa

Initial value:

= {
   alsa_qsa_init,
   alsa_qsa_write,
   alsa_qsa_stop,
   alsa_qsa_start,
   alsa_qsa_alive,
   alsa_qsa_set_nonblock_state,
   alsa_qsa_free,
   alsa_qsa_use_float,
   "alsa",
   NULL,
   NULL,
   alsa_qsa_write_avail,
   alsa_qsa_buffer_size,
}