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/* Ogle - A video player
* Copyright (C) 2002 Bjrn Englund
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef LIBOGLEAO_OBSD
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <inttypes.h>
#include <fcntl.h>
#include <sys/audioio.h>
#include <sys/types.h>
#include <sys/conf.h>
#include <string.h>
#include "ogle_ao.h"
#include "ogle_ao_private.h"
typedef struct obsd_instance_s {
ogle_ao_instance_t ao;
int fd;
int sample_rate;
int samples_written;
int sample_frame_size;
int initialized;
} obsd_instance_t;
static
int obsd_init(ogle_ao_instance_t *_instance,
ogle_ao_audio_info_t *audio_info)
{
int single_sample_size;
audio_info_t info;
obsd_instance_t *instance = (obsd_instance_t *)_instance;
AUDIO_INITINFO(&info);
info.play.sample_rate = audio_info->sample_rate;
info.play.precision = audio_info->sample_resolution;
if(audio_info->chtypes != OGLE_AO_CHTYPE_UNSPECIFIED) {
// do this only if we have requested specific channels in chtypes
// otherwise trust the nr channels
audio_info->chtypes = OGLE_AO_CHTYPE_LEFT | OGLE_AO_CHTYPE_RIGHT;
audio_info->channels = 2;
}
if(audio_info->chlist) {
free(audio_info->chlist);
}
audio_info->chlist = NULL;
info.play.channels = audio_info->channels;
info.lowat = 5;
switch(audio_info->encoding) {
case OGLE_AO_ENCODING_LINEAR:
default:
info.play.encoding = AUDIO_ENCODING_LINEAR;
break;
}
/* set the audio format */
if(ioctl(instance->fd, AUDIO_SETINFO, &info) == -1) {
perror("setinfo");
return -1;
}
/* Check that we actually got the requested nuber of channles,
* the frequency and precision that we asked for? */
if(audio_info->chtypes != OGLE_AO_CHTYPE_UNSPECIFIED) {
audio_info->chlist = malloc(info.play.channels * sizeof(ogle_ao_chtype_t));
audio_info->chlist[0] = OGLE_AO_CHTYPE_LEFT;
audio_info->chlist[1] = OGLE_AO_CHTYPE_RIGHT;
}
/* Stored as 8bit, 16bit, or 32bit */
single_sample_size = (info.play.precision + 7) / 8;
if(single_sample_size > 2) {
single_sample_size = 4;
}
instance->sample_frame_size = single_sample_size*info.play.channels;
instance->initialized = 1;
audio_info->sample_frame_size = instance->sample_frame_size;
return 0;
}
static
int obsd_play(ogle_ao_instance_t *_instance, void *samples, size_t nbyte)
{
obsd_instance_t *instance = (obsd_instance_t *)_instance;
int written;
written = write(instance->fd, samples, nbyte);
if(written == -1) {
perror("audio write");
return -1;
}
instance->samples_written += written / instance->sample_frame_size;
return 0;
}
static
int obsd_odelay(ogle_ao_instance_t *_instance, uint32_t *samples_return)
{
obsd_instance_t *instance = (obsd_instance_t *)_instance;
audio_info_t info;
int odelay;
if (ioctl(instance->fd, AUDIO_GETINFO, &info) == -1) {
perror("AUDIO_GETINFO");
return -1;
}
odelay = info.play.seek / instance->sample_frame_size;
*samples_return = odelay;
return 0;
}
static
void obsd_close(ogle_ao_instance_t *_instance)
{
obsd_instance_t *instance = (obsd_instance_t *)_instance;
close(instance->fd);
}
static
int obsd_flush(ogle_ao_instance_t *_instance)
{
obsd_instance_t *instance = (obsd_instance_t *)_instance;
fprintf(stderr, "AUDIO_FLUSH called\n");
ioctl(instance->fd, AUDIO_FLUSH, NULL);
instance->samples_written = 0;
ioctl(instance->fd, AUDIO_DRAIN, 0);
return 0;
}
static
int obsd_drain(ogle_ao_instance_t *_instance)
{
obsd_instance_t *instance = (obsd_instance_t *)_instance;
ioctl(instance->fd, AUDIO_DRAIN, 0);
return 0;
}
static
ogle_ao_instance_t *obsd_open(char *dev)
{
obsd_instance_t *instance;
instance = malloc(sizeof(obsd_instance_t));
if(instance == NULL)
return NULL;
instance->ao.init = obsd_init;
instance->ao.play = obsd_play;
instance->ao.close = obsd_close;
instance->ao.odelay = obsd_odelay;
instance->ao.flush = obsd_flush;
instance->ao.drain = obsd_drain;
instance->initialized = 0;
instance->sample_rate = 0;
instance->samples_written = 0;
instance->sample_frame_size = 0;
instance->fd = open(dev, O_WRONLY);
if(instance->fd < 0) {
fprintf(stderr, "Can not open %s\n", dev);
free(instance);
return NULL;
}
return (ogle_ao_instance_t *)instance;
}
/* The one directly exported function */
ogle_ao_instance_t *ao_obsd_open(char *dev)
{
return obsd_open(dev);
}
#endif
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