int
audio_open (int dev, struct fileinfo *file)
{
int ret;
int bits;
int dev_type = dev & 0x0f;
int mode = file->mode & O_ACCMODE;
dev = dev >> 4;
if (dev_type == SND_DEV_DSP16)
bits = 16;
else
bits = 8;
if ((ret = DMAbuf_open (dev, mode)) < 0)
return ret;
if (audio_devs[dev]->coproc)
if ((ret = audio_devs[dev]->coproc->
open (audio_devs[dev]->coproc->devc, COPR_PCM)) < 0)
{
audio_release (dev, file);
printk ("Sound: Can't access coprocessor device\n");
return ret;
}
local_conversion[dev] = 0;
if (DMAbuf_ioctl (dev, SNDCTL_DSP_SETFMT, (caddr_t) bits, 1) != bits)
{
printk ("audio: Can't set number of bits on device %d\n", dev);
audio_release (dev, file);
return -(ENXIO);
}
if (dev_type == SND_DEV_AUDIO)
{
set_format (dev, AFMT_MU_LAW);
}
else
set_format (dev, bits);
audio_mode[dev] = AM_NONE;
dev_nblock[dev] = 0;
return ret;
}
static int sound_release(struct inode *inode, struct file *file)
{
int dev = iminor(inode);
lock_kernel();
DEB(printk("sound_release(dev=%d)\n", dev));
switch (dev & 0x0f) {
case SND_DEV_CTL:
module_put(mixer_devs[dev >> 4]->owner);
break;
case SND_DEV_SEQ:
case SND_DEV_SEQ2:
sequencer_release(dev, file);
break;
case SND_DEV_MIDIN:
MIDIbuf_release(dev, file);
break;
case SND_DEV_DSP:
case SND_DEV_DSP16:
case SND_DEV_AUDIO:
audio_release(dev, file);
break;
default:
printk(KERN_ERR "Sound error: Releasing unknown device 0x%02x\n", dev);
}
unlock_kernel();
return 0;
}
void cleanup(void)
{
printf("Closing up..\n");
pthread_kill(audiothread, SIGTERM);
pthread_kill(renderthread, SIGTERM);
pthread_exit(NULL);
audio_release();
}
static int sound_release(struct inode *inode, struct file *file)
{
int dev = MINOR(inode->i_rdev);
DEB(printk("sound_release(dev=%d)\n", dev));
switch (dev & 0x0f) {
case SND_DEV_STATUS:
case SND_DEV_CTL:
break;
#ifdef CONFIG_SEQUENCER
case SND_DEV_SEQ:
case SND_DEV_SEQ2:
sequencer_release(dev, file);
break;
#endif
#ifdef CONFIG_MIDI
case SND_DEV_MIDIN:
MIDIbuf_release(dev, file);
break;
#endif
#ifdef CONFIG_AUDIO
case SND_DEV_DSP:
case SND_DEV_DSP16:
case SND_DEV_AUDIO:
audio_release(dev, file);
break;
#endif
default:
printk(KERN_ERR "Sound error: Releasing unknown device 0x%02x\n", dev);
}
in_use--;
#ifdef CONFIG_MODULES
notifier_call_chain(&sound_locker, 0, 0);
lock_depth--;
#endif
return 0;
}