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alsabat: use general data generator function

Browse source 
Use general data generator to replace local function, so other
modules can reuse the data generator rather than re-implement it.

Signed-off-by: Lu, Han <han.lu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Lu, Han 2016-03-23 15:52:45 +08:00 committed by Takashi Iwai
parent eac9b149b4
commit c49a6180c8
3 changed files with 53 additions and 56 deletions
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57
bat/alsa.c
View file

@ -16,7 +16,6 @@
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
#include <stdint.h>
#include <pthread.h>
#include <errno.h>
@ -28,7 +27,6 @@
#include "common.h"
#include "alsa.h"
#include "bat-signal.h"
struct pcm_container {
snd_pcm_t *handle;
@ -206,59 +204,6 @@ static int set_snd_pcm_params(struct bat *bat, struct pcm_container *sndpcm)
return 0;
}
/*
* Generate buffer to be played either from input file or from generated data
* Return value
* <0 error
* 0 ok
* >0 break
*/
static int generate_input_data(struct pcm_container *sndpcm, int bytes,
struct bat *bat)
{
int err;
static int load;
int frames = bytes * 8 / sndpcm->frame_bits;
if (bat->playback.file != NULL) {
/* From input file */
load = 0;
while (1) {
err = fread(sndpcm->buffer + load, 1,
bytes - load, bat->fp);
if (0 == err) {
if (feof(bat->fp)) {
fprintf(bat->log,
_("End of playing.\n"));
return 1;
}
} else if (err < bytes - load) {
if (ferror(bat->fp)) {
fprintf(bat->err, _("Read file error"));
fprintf(bat->err, _(": %d\n"), err);
return -EIO;
}
load += err;
} else {
break;
}
}
} else {
/* Generate sine wave */
if ((bat->sinus_duration) && (load > bat->sinus_duration))
return 1;
err = generate_sine_wave(bat, frames, (void *)sndpcm->buffer);
if (err != 0)
return err;
load += frames;
}
return 0;
}
static int write_to_pcm(const struct pcm_container *sndpcm,
int frames, struct bat *bat)
{
@ -315,7 +260,7 @@ static int write_to_pcm_loop(struct pcm_container *sndpcm, struct bat *bat)
}
while (1) {
err = generate_input_data(sndpcm, bytes, bat);
err = generate_input_data(bat, sndpcm->buffer, bytes, frames);
if (err != 0)
break;

51
bat/common.c
View file

@ -23,6 +23,7 @@
#include "common.h"
#include "alsa.h"
#include "bat-signal.h"
int retval_play;
int retval_record;
@ -211,3 +212,53 @@ int update_wav_header(struct bat *bat, FILE *fp, int bytes)
return err;
}
/*
* Generate buffer to be played either from input file or from generated data
* Return value
* <0 error
* 0 ok
* >0 break
*/
int generate_input_data(struct bat *bat, void *buffer, int bytes, int frames)
{
int err;
static int load;
if (bat->playback.file != NULL) {
/* From input file */
load = 0;
while (1) {
err = fread(buffer + load, 1, bytes - load, bat->fp);
if (0 == err) {
if (feof(bat->fp)) {
fprintf(bat->log,
_("End of playing.\n"));
return 1;
}
} else if (err < bytes - load) {
if (ferror(bat->fp)) {
fprintf(bat->err, _("Read file error"));
fprintf(bat->err, _(": %d\n"), err);
return -EIO;
}
load += err;
} else {
break;
}
}
} else {
/* Generate sine wave */
if ((bat->sinus_duration) && (load > bat->sinus_duration))
return 1;
err = generate_sine_wave(bat, frames, buffer);
if (err != 0)
return err;
load += frames;
}
return 0;
}

1
bat/common.h
View file

@ -184,3 +184,4 @@ void prepare_wav_info(struct wav_container *, struct bat *);
int read_wav_header(struct bat *, char *, FILE *, bool);
int write_wav_header(FILE *, struct wav_container *, struct bat *);
int update_wav_header(struct bat *, FILE *, int);
int generate_input_data(struct bat *, void *, int, int);