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Code Issues Releases Wiki Activity

ao_subdevice support

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@1192 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
al3x 2001-06-21 23:07:15 +00:00
parent 76b278d97c
commit a1c76a747b
1 changed files with 55 additions and 0 deletions

55
libao2/ao_oss.c
View File

@ -15,6 +15,8 @@
#include "audio_out_internal.h"
//#include "afmt.h"
extern int verbose;
static ao_info_t info =
{
"OSS/ioctl audio output",
@ -37,6 +39,9 @@ static char *dsp="/dev/dsp";
static audio_buf_info zz;
static int audio_fd=-1;
char *oss_mixer_device = "/dev/mixer";
int oss_mixer_usemaster = 0;
// to set/get/query special features/parameters
static int control(int cmd,int arg){
switch(cmd){
@ -45,6 +50,50 @@ static int control(int cmd,int arg){
return CONTROL_OK;
case AOCONTROL_QUERY_FORMAT:
return CONTROL_TRUE;
case AOCONTROL_GET_VOLUME:
case AOCONTROL_SET_VOLUME:
{
ao_control_vol_t *vol = (ao_control_vol_t *)arg;
int fd, v, mcmd, devs;
if ((fd = open("/dev/mixer", O_RDONLY)) > 0)
{
ioctl(fd, SOUND_MIXER_READ_DEVMASK, &devs);
if ((devs & SOUND_MASK_PCM) && (oss_mixer_usemaster == 0))
if (cmd == AOCONTROL_GET_VOLUME)
mcmd = SOUND_MIXER_READ_PCM;
else
mcmd = SOUND_MIXER_WRITE_PCM;
else if ((devs & SOUND_MASK_VOLUME) && (oss_mixer_usemaster == 1))
if (cmd == AOCONTROL_GET_VOLUME)
mcmd = SOUND_MIXER_READ_VOLUME;
else
mcmd = SOUND_MIXER_WRITE_VOLUME;
else
{
close(fd);
return CONTROL_ERROR;
}
if (cmd == AOCONTROL_GET_VOLUME)
{
ioctl(fd, cmd, &v);
vol->right = (v & 0xFF00) >> 8;
vol->left = v & 0x00FF;
}
else
{
v = ((int)vol->right << 8) | (int)vol->left;
ioctl(fd, cmd, &v);
}
close(fd);
return CONTROL_OK;
}
else
return CONTROL_ERROR;
}
return CONTROL_ERROR;
default:
}
return CONTROL_UNKNOWN;
}
@ -56,6 +105,12 @@ static int init(int rate,int channels,int format,int flags){
printf("ao2: %d Hz %d chans %s\n",rate,channels,
audio_out_format_name(format));
if (ao_subdevice)
dsp = ao_subdevice;
if (verbose)
printf("audio_setup: using '%s' dsp device\n", dsp);
audio_fd=open(dsp, O_WRONLY);
if(audio_fd<0){
printf("Can't open audio device %s -> nosound\n",dsp);