#define SND_FILE_CONTROL "/dev/snd/control%i"
#define SND_CTL_VERSION_MAX SND_PROTOCOL_VERSION( 1, 0, 0 )
-
+
typedef struct {
- int card;
- int fd;
+ int card;
+ int fd;
} snd_ctl_t;
-
-int snd_ctl_open( void **handle, int card )
-{
- int fd, ver;
- char filename[32];
- snd_ctl_t *ctl;
-
- *handle = NULL;
- if ( card < 0 || card >= SND_CARDS ) return -EINVAL;
- sprintf( filename, SND_FILE_CONTROL, card );
- if ( (fd = open( filename, O_RDWR )) < 0 ) return -errno;
- if ( ioctl( fd, SND_CTL_IOCTL_PVERSION, &ver ) < 0 ) {
- close( fd );
- return -errno;
- }
- if ( SND_PROTOCOL_UNCOMPATIBLE( ver, SND_CTL_VERSION_MAX ) ) {
- close( fd );
- return -SND_ERROR_UNCOMPATIBLE_VERSION;
- }
- ctl = (snd_ctl_t *)calloc( 1, sizeof( snd_ctl_t ) );
- if ( ctl == NULL ) {
- close( fd );
- return -ENOMEM;
- }
- ctl -> card = card;
- ctl -> fd = fd;
- *handle = ctl;
- return 0;
-}
-
-int snd_ctl_close( void *handle )
-{
- snd_ctl_t *ctl;
- int res;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- res = close( ctl -> fd ) < 0 ? -errno : 0;
- free( ctl );
- return res;
-}
-
-int snd_ctl_file_descriptor( void *handle )
-{
- snd_ctl_t *ctl;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- return ctl -> fd;
-}
-
-int snd_ctl_hw_info( void *handle, struct snd_ctl_hw_info *info )
-{
- snd_ctl_t *ctl;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_HW_INFO, info ) < 0 )
- return -errno;
- return 0;
-}
-
-int snd_ctl_switches( void *handle )
-{
- snd_ctl_t *ctl;
- int result;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_SWITCHES, &result ) < 0 )
- return -errno;
- return result;
-}
-int snd_ctl_switch( void *handle, const char *switch_id )
-{
- snd_ctl_t *ctl;
- struct snd_ctl_switch uswitch;
- int idx, switches, err;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- /* bellow implementation isn't optimized for speed */
- /* info about switches should be cached in the snd_ctl_t structure */
- if ( (switches = snd_ctl_switches( handle )) < 0 )
- return switches;
- for ( idx = 0; idx < switches; idx++ ) {
- if ( (err = snd_ctl_switch_read( handle, idx, &uswitch )) < 0 )
- return err;
- if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) )
- return idx;
- }
- return -EINVAL;
-}
-
-int snd_ctl_switch_read( void *handle, int switchn, struct snd_ctl_switch *data )
-{
- snd_ctl_t *ctl;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_SWITCH_READ, data ) < 0 )
- return -errno;
- return 0;
-}
-
-int snd_ctl_switch_write( void *handle, int switchn, struct snd_ctl_switch *data )
-{
- snd_ctl_t *ctl;
+int snd_ctl_open(void **handle, int card)
+{
+ int fd, ver;
+ char filename[32];
+ snd_ctl_t *ctl;
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_SWITCH_WRITE, data ) < 0 )
- return -errno;
- return 0;
+ *handle = NULL;
+ if (card < 0 || card >= SND_CARDS)
+ return -EINVAL;
+ sprintf(filename, SND_FILE_CONTROL, card);
+ if ((fd = open(filename, O_RDWR)) < 0)
+ return -errno;
+ if (ioctl(fd, SND_CTL_IOCTL_PVERSION, &ver) < 0) {
+ close(fd);
+ return -errno;
+ }
+ if (SND_PROTOCOL_UNCOMPATIBLE(ver, SND_CTL_VERSION_MAX)) {
+ close(fd);
+ return -SND_ERROR_UNCOMPATIBLE_VERSION;
+ }
+ ctl = (snd_ctl_t *) calloc(1, sizeof(snd_ctl_t));
+ if (ctl == NULL) {
+ close(fd);
+ return -ENOMEM;
+ }
+ ctl->card = card;
+ ctl->fd = fd;
+ *handle = ctl;
+ return 0;
}
-int snd_ctl_pcm_info( void *handle, int dev, snd_pcm_info_t *info )
+int snd_ctl_close(void *handle)
{
- snd_ctl_t *ctl;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_INFO, info ) < 0 )
- return -errno;
- return 0;
+ snd_ctl_t *ctl;
+ int res;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ res = close(ctl->fd) < 0 ? -errno : 0;
+ free(ctl);
+ return res;
}
-int snd_ctl_pcm_playback_info( void *handle, int dev, snd_pcm_playback_info_t *info )
+int snd_ctl_file_descriptor(void *handle)
{
- snd_ctl_t *ctl;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_PLAYBACK_INFO, info ) < 0 )
- return -errno;
- return 0;
+ snd_ctl_t *ctl;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ return ctl->fd;
}
-int snd_ctl_pcm_record_info( void *handle, int dev, snd_pcm_record_info_t *info )
+int snd_ctl_hw_info(void *handle, struct snd_ctl_hw_info *info)
{
- snd_ctl_t *ctl;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_RECORD_INFO, info ) < 0 )
- return -errno;
- return 0;
+ snd_ctl_t *ctl;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_HW_INFO, info) < 0)
+ return -errno;
+ return 0;
}
-int snd_ctl_pcm_playback_switches( void *handle, int dev )
+int snd_ctl_switches(void *handle)
{
- snd_ctl_t *ctl;
- int result;
+ snd_ctl_t *ctl;
+ int result;
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_PSWITCHES, &result ) < 0 )
- return -errno;
- return result;
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_SWITCHES, &result) < 0)
+ return -errno;
+ return result;
}
-int snd_ctl_pcm_playback_switch( void *handle, int dev, const char *switch_id )
+int snd_ctl_switch(void *handle, const char *switch_id)
{
- snd_ctl_t *ctl;
- snd_pcm_switch_t uswitch;
- int idx, switches, err;
+ snd_ctl_t *ctl;
+ struct snd_ctl_switch uswitch;
+ int idx, switches, err;
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- /* bellow implementation isn't optimized for speed */
- /* info about switches should be cached in the snd_ctl_t structure */
- if ( (switches = snd_ctl_pcm_playback_switches( handle, dev )) < 0 )
- return switches;
- for ( idx = 0; idx < switches; idx++ ) {
- if ( (err = snd_ctl_pcm_playback_switch_read( handle, dev, idx, &uswitch )) < 0 )
- return err;
- if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) )
- return idx;
- }
- return -EINVAL;
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ /* bellow implementation isn't optimized for speed */
+ /* info about switches should be cached in the snd_ctl_t structure */
+ if ((switches = snd_ctl_switches(handle)) < 0)
+ return switches;
+ for (idx = 0; idx < switches; idx++) {
+ if ((err = snd_ctl_switch_read(handle, idx, &uswitch)) < 0)
+ return err;
+ if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name)))
+ return idx;
+ }
+ return -EINVAL;
}
-int snd_ctl_pcm_playback_switch_read( void *handle, int dev, int switchn, snd_pcm_switch_t *data )
-{
- snd_ctl_t *ctl;
+int snd_ctl_switch_read(void *handle, int switchn, struct snd_ctl_switch *data)
+{
+ snd_ctl_t *ctl;
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_PSWITCH_READ, data ) < 0 )
- return -errno;
- return 0;
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_SWITCH_READ, data) < 0)
+ return -errno;
+ return 0;
}
-int snd_ctl_pcm_playback_switch_write( void *handle, int dev, int switchn, snd_pcm_switch_t *data )
+int snd_ctl_switch_write(void *handle, int switchn, struct snd_ctl_switch *data)
{
- snd_ctl_t *ctl;
+ snd_ctl_t *ctl;
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_PSWITCH_WRITE, data ) < 0 )
- return -errno;
- return 0;
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_SWITCH_WRITE, data) < 0)
+ return -errno;
+ return 0;
}
-int snd_ctl_pcm_record_switches( void *handle, int dev )
-{
- snd_ctl_t *ctl;
- int result;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_RSWITCHES, &result ) < 0 )
- return -errno;
- return result;
-}
-
-int snd_ctl_pcm_record_switch( void *handle, int dev, const char *switch_id )
+int snd_ctl_pcm_info(void *handle, int dev, snd_pcm_info_t * info)
{
- snd_ctl_t *ctl;
- snd_pcm_switch_t uswitch;
- int idx, switches, err;
+ snd_ctl_t *ctl;
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- /* bellow implementation isn't optimized for speed */
- /* info about switches should be cached in the snd_ctl_t structure */
- if ( (switches = snd_ctl_pcm_record_switches( handle, dev )) < 0 )
- return switches;
- for ( idx = 0; idx < switches; idx++ ) {
- if ( (err = snd_ctl_pcm_record_switch_read( handle, dev, idx, &uswitch )) < 0 )
- return err;
- if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) )
- return idx;
- }
- return -EINVAL;
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_INFO, info) < 0)
+ return -errno;
+ return 0;
}
-int snd_ctl_pcm_record_switch_read( void *handle, int dev, int switchn, snd_pcm_switch_t *data )
+int snd_ctl_pcm_playback_info(void *handle, int dev, snd_pcm_playback_info_t * info)
{
- snd_ctl_t *ctl;
+ snd_ctl_t *ctl;
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_RSWITCH_READ, data ) < 0 )
- return -errno;
- return 0;
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_PLAYBACK_INFO, info) < 0)
+ return -errno;
+ return 0;
}
-int snd_ctl_pcm_record_switch_write( void *handle, int dev, int switchn, snd_pcm_switch_t *data )
+int snd_ctl_pcm_record_info(void *handle, int dev, snd_pcm_record_info_t * info)
{
- snd_ctl_t *ctl;
+ snd_ctl_t *ctl;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_RECORD_INFO, info) < 0)
+ return -errno;
+ return 0;
+}
+
+int snd_ctl_pcm_playback_switches(void *handle, int dev)
+{
+ snd_ctl_t *ctl;
+ int result;
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_PCM_RSWITCH_WRITE, data ) < 0 )
- return -errno;
- return 0;
-}
-
-int snd_ctl_mixer_info( void *handle, int dev, snd_mixer_info_t *info )
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_PSWITCHES, &result) < 0)
+ return -errno;
+ return result;
+}
+
+int snd_ctl_pcm_playback_switch(void *handle, int dev, const char *switch_id)
+{
+ snd_ctl_t *ctl;
+ snd_pcm_switch_t uswitch;
+ int idx, switches, err;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ /* bellow implementation isn't optimized for speed */
+ /* info about switches should be cached in the snd_ctl_t structure */
+ if ((switches = snd_ctl_pcm_playback_switches(handle, dev)) < 0)
+ return switches;
+ for (idx = 0; idx < switches; idx++) {
+ if ((err = snd_ctl_pcm_playback_switch_read(handle, dev, idx, &uswitch)) < 0)
+ return err;
+ if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name)))
+ return idx;
+ }
+ return -EINVAL;
+}
+
+int snd_ctl_pcm_playback_switch_read(void *handle, int dev, int switchn, snd_pcm_switch_t * data)
{
- snd_ctl_t *ctl;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_INFO, info ) < 0 )
- return -errno;
- return 0;
-}
-
-int snd_ctl_mixer_switches( void *handle, int dev )
+ snd_ctl_t *ctl;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_PSWITCH_READ, data) < 0)
+ return -errno;
+ return 0;
+}
+
+int snd_ctl_pcm_playback_switch_write(void *handle, int dev, int switchn, snd_pcm_switch_t * data)
{
- snd_ctl_t *ctl;
- int result;
+ snd_ctl_t *ctl;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_PSWITCH_WRITE, data) < 0)
+ return -errno;
+ return 0;
+}
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_SWITCHES, &result ) < 0 )
- return -errno;
- return result;
-}
-
-int snd_ctl_mixer_switch( void *handle, int dev, const char *switch_id )
+int snd_ctl_pcm_record_switches(void *handle, int dev)
{
- snd_ctl_t *ctl;
- snd_mixer_switch_t uswitch;
- int idx, switches, err;
+ snd_ctl_t *ctl;
+ int result;
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- /* bellow implementation isn't optimized for speed */
- /* info about switches should be cached in the snd_ctl_t structure */
- if ( (switches = snd_ctl_mixer_switches( handle, dev )) < 0 )
- return switches;
- for ( idx = 0; idx < switches; idx++ ) {
- if ( (err = snd_ctl_mixer_switch_read( handle, dev, idx, &uswitch )) < 0 )
- return err;
- if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) )
- return idx;
- }
- return -EINVAL;
-}
-
-int snd_ctl_mixer_switch_read( void *handle, int dev, int switchn, snd_mixer_switch_t *data )
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_RSWITCHES, &result) < 0)
+ return -errno;
+ return result;
+}
+
+int snd_ctl_pcm_record_switch(void *handle, int dev, const char *switch_id)
+{
+ snd_ctl_t *ctl;
+ snd_pcm_switch_t uswitch;
+ int idx, switches, err;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ /* bellow implementation isn't optimized for speed */
+ /* info about switches should be cached in the snd_ctl_t structure */
+ if ((switches = snd_ctl_pcm_record_switches(handle, dev)) < 0)
+ return switches;
+ for (idx = 0; idx < switches; idx++) {
+ if ((err = snd_ctl_pcm_record_switch_read(handle, dev, idx, &uswitch)) < 0)
+ return err;
+ if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name)))
+ return idx;
+ }
+ return -EINVAL;
+}
+
+int snd_ctl_pcm_record_switch_read(void *handle, int dev, int switchn, snd_pcm_switch_t * data)
+{
+ snd_ctl_t *ctl;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_RSWITCH_READ, data) < 0)
+ return -errno;
+ return 0;
+}
+
+int snd_ctl_pcm_record_switch_write(void *handle, int dev, int switchn, snd_pcm_switch_t * data)
+{
+ snd_ctl_t *ctl;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_PCM_RSWITCH_WRITE, data) < 0)
+ return -errno;
+ return 0;
+}
+
+int snd_ctl_mixer_info(void *handle, int dev, snd_mixer_info_t * info)
{
- snd_ctl_t *ctl;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_SWITCH_READ, data ) < 0 )
- return -errno;
- return 0;
-}
-
-int snd_ctl_mixer_switch_write( void *handle, int dev, int switchn, snd_mixer_switch_t *data )
+ snd_ctl_t *ctl;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_INFO, info) < 0)
+ return -errno;
+ return 0;
+}
+
+int snd_ctl_mixer_switches(void *handle, int dev)
{
- snd_ctl_t *ctl;
+ snd_ctl_t *ctl;
+ int result;
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_MIXER_SWITCH_WRITE, data ) < 0 )
- return -errno;
- return 0;
-}
-
-int snd_ctl_rawmidi_info( void *handle, int dev, snd_rawmidi_info_t *info )
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_SWITCHES, &result) < 0)
+ return -errno;
+ return result;
+}
+
+int snd_ctl_mixer_switch(void *handle, int dev, const char *switch_id)
{
- snd_ctl_t *ctl;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_INFO, info ) < 0 )
- return -errno;
- return 0;
+ snd_ctl_t *ctl;
+ snd_mixer_switch_t uswitch;
+ int idx, switches, err;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ /* bellow implementation isn't optimized for speed */
+ /* info about switches should be cached in the snd_ctl_t structure */
+ if ((switches = snd_ctl_mixer_switches(handle, dev)) < 0)
+ return switches;
+ for (idx = 0; idx < switches; idx++) {
+ if ((err = snd_ctl_mixer_switch_read(handle, dev, idx, &uswitch)) < 0)
+ return err;
+ if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name)))
+ return idx;
+ }
+ return -EINVAL;
}
-
-int snd_ctl_rawmidi_output_info( void *handle, int dev, snd_rawmidi_output_info_t *info )
-{
- snd_ctl_t *ctl;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_OUTPUT_INFO, info ) < 0 )
- return -errno;
- return 0;
+
+int snd_ctl_mixer_switch_read(void *handle, int dev, int switchn, snd_mixer_switch_t * data)
+{
+ snd_ctl_t *ctl;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_SWITCH_READ, data) < 0)
+ return -errno;
+ return 0;
}
-int snd_ctl_rawmidi_input_info( void *handle, int dev, snd_rawmidi_input_info_t *info )
-{
- snd_ctl_t *ctl;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_INPUT_INFO, info ) < 0 )
- return -errno;
- return 0;
-}
-
-int snd_ctl_rawmidi_output_switches( void *handle, int dev )
+int snd_ctl_mixer_switch_write(void *handle, int dev, int switchn, snd_mixer_switch_t * data)
{
- snd_ctl_t *ctl;
- int result;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_OSWITCHES, &result ) < 0 )
- return -errno;
- return result;
-}
+ snd_ctl_t *ctl;
-int snd_ctl_rawmidi_output_switch( void *handle, int dev, const char *switch_id )
-{
- snd_ctl_t *ctl;
- snd_rawmidi_switch_t uswitch;
- int idx, switches, err;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- /* bellow implementation isn't optimized for speed */
- /* info about switches should be cached in the snd_ctl_t structure */
- if ( (switches = snd_ctl_rawmidi_output_switches( handle, dev )) < 0 )
- return switches;
- for ( idx = 0; idx < switches; idx++ ) {
- if ( (err = snd_ctl_rawmidi_output_switch_read( handle, dev, idx, &uswitch )) < 0 )
- return err;
- if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) )
- return idx;
- }
- return -EINVAL;
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_MIXER_SWITCH_WRITE, data) < 0)
+ return -errno;
+ return 0;
}
-int snd_ctl_rawmidi_output_switch_read( void *handle, int dev, int switchn, snd_rawmidi_switch_t *data )
-{
- snd_ctl_t *ctl;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_OSWITCH_READ, data ) < 0 )
- return -errno;
- return 0;
-}
-
-int snd_ctl_rawmidi_output_switch_write( void *handle, int dev, int switchn, snd_rawmidi_switch_t *data )
-{
- snd_ctl_t *ctl;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_OSWITCH_WRITE, data ) < 0 )
- return -errno;
- return 0;
-}
-
-int snd_ctl_rawmidi_input_switches( void *handle, int dev )
-{
- snd_ctl_t *ctl;
- int result;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_ISWITCHES, &result ) < 0 )
- return -errno;
- return result;
-}
-
-int snd_ctl_rawmidi_input_switch( void *handle, int dev, const char *switch_id )
-{
- snd_ctl_t *ctl;
- snd_rawmidi_switch_t uswitch;
- int idx, switches, err;
+int snd_ctl_rawmidi_info(void *handle, int dev, snd_rawmidi_info_t * info)
+{
+ snd_ctl_t *ctl;
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- /* bellow implementation isn't optimized for speed */
- /* info about switches should be cached in the snd_ctl_t structure */
- if ( (switches = snd_ctl_rawmidi_input_switches( handle, dev )) < 0 )
- return switches;
- for ( idx = 0; idx < switches; idx++ ) {
- if ( (err = snd_ctl_rawmidi_input_switch_read( handle, dev, idx, &uswitch )) < 0 )
- return err;
- if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) )
- return idx;
- }
- return -EINVAL;
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_INFO, info) < 0)
+ return -errno;
+ return 0;
}
-int snd_ctl_rawmidi_input_switch_read( void *handle, int dev, int switchn, snd_rawmidi_switch_t *data )
+int snd_ctl_rawmidi_output_info(void *handle, int dev, snd_rawmidi_output_info_t * info)
{
- snd_ctl_t *ctl;
+ snd_ctl_t *ctl;
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_ISWITCH_READ, data ) < 0 )
- return -errno;
- return 0;
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_OUTPUT_INFO, info) < 0)
+ return -errno;
+ return 0;
}
-int snd_ctl_rawmidi_input_switch_write( void *handle, int dev, int switchn, snd_rawmidi_switch_t *data )
+int snd_ctl_rawmidi_input_info(void *handle, int dev, snd_rawmidi_input_info_t * info)
+{
+ snd_ctl_t *ctl;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_INPUT_INFO, info) < 0)
+ return -errno;
+ return 0;
+}
+
+int snd_ctl_rawmidi_output_switches(void *handle, int dev)
+{
+ snd_ctl_t *ctl;
+ int result;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_OSWITCHES, &result) < 0)
+ return -errno;
+ return result;
+}
+
+int snd_ctl_rawmidi_output_switch(void *handle, int dev, const char *switch_id)
+{
+ snd_ctl_t *ctl;
+ snd_rawmidi_switch_t uswitch;
+ int idx, switches, err;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ /* bellow implementation isn't optimized for speed */
+ /* info about switches should be cached in the snd_ctl_t structure */
+ if ((switches = snd_ctl_rawmidi_output_switches(handle, dev)) < 0)
+ return switches;
+ for (idx = 0; idx < switches; idx++) {
+ if ((err = snd_ctl_rawmidi_output_switch_read(handle, dev, idx, &uswitch)) < 0)
+ return err;
+ if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name)))
+ return idx;
+ }
+ return -EINVAL;
+}
+
+int snd_ctl_rawmidi_output_switch_read(void *handle, int dev, int switchn, snd_rawmidi_switch_t * data)
+{
+ snd_ctl_t *ctl;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_OSWITCH_READ, data) < 0)
+ return -errno;
+ return 0;
+}
+
+int snd_ctl_rawmidi_output_switch_write(void *handle, int dev, int switchn, snd_rawmidi_switch_t * data)
{
- snd_ctl_t *ctl;
-
- ctl = (snd_ctl_t *)handle;
- if ( !ctl ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev ) < 0 )
- return -errno;
- if ( ioctl( ctl -> fd, SND_CTL_IOCTL_RAWMIDI_ISWITCH_WRITE, data ) < 0 )
- return -errno;
- return 0;
+ snd_ctl_t *ctl;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_OSWITCH_WRITE, data) < 0)
+ return -errno;
+ return 0;
+}
+
+int snd_ctl_rawmidi_input_switches(void *handle, int dev)
+{
+ snd_ctl_t *ctl;
+ int result;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_ISWITCHES, &result) < 0)
+ return -errno;
+ return result;
+}
+
+int snd_ctl_rawmidi_input_switch(void *handle, int dev, const char *switch_id)
+{
+ snd_ctl_t *ctl;
+ snd_rawmidi_switch_t uswitch;
+ int idx, switches, err;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ /* bellow implementation isn't optimized for speed */
+ /* info about switches should be cached in the snd_ctl_t structure */
+ if ((switches = snd_ctl_rawmidi_input_switches(handle, dev)) < 0)
+ return switches;
+ for (idx = 0; idx < switches; idx++) {
+ if ((err = snd_ctl_rawmidi_input_switch_read(handle, dev, idx, &uswitch)) < 0)
+ return err;
+ if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name)))
+ return idx;
+ }
+ return -EINVAL;
+}
+
+int snd_ctl_rawmidi_input_switch_read(void *handle, int dev, int switchn, snd_rawmidi_switch_t * data)
+{
+ snd_ctl_t *ctl;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_ISWITCH_READ, data) < 0)
+ return -errno;
+ return 0;
+}
+
+int snd_ctl_rawmidi_input_switch_write(void *handle, int dev, int switchn, snd_rawmidi_switch_t * data)
+{
+ snd_ctl_t *ctl;
+
+ ctl = (snd_ctl_t *) handle;
+ if (!ctl)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_DEVICE, &dev) < 0)
+ return -errno;
+ if (ioctl(ctl->fd, SND_CTL_IOCTL_RAWMIDI_ISWITCH_WRITE, data) < 0)
+ return -errno;
+ return 0;
}
#include <string.h>
#include "asoundlib.h"
-static const char *snd_error_codes[] = {
- "Sound protocol isn't compatible"
+static const char *snd_error_codes[] =
+{
+ "Sound protocol isn't compatible"
};
-const char *snd_strerror( int errnum )
+const char *snd_strerror(int errnum)
{
- if ( errnum < 0 ) errnum = -errnum;
- if ( errnum < SND_ERROR_BEGIN )
- return (const char *)strerror( errnum );
- errnum -= SND_ERROR_BEGIN;
- if ( errnum >= sizeof( snd_error_codes ) / sizeof( const char * ) )
- return "Unknown error";
- return snd_error_codes[ errnum ];
+ if (errnum < 0)
+ errnum = -errnum;
+ if (errnum < SND_ERROR_BEGIN)
+ return (const char *) strerror(errnum);
+ errnum -= SND_ERROR_BEGIN;
+ if (errnum >= sizeof(snd_error_codes) / sizeof(const char *))
+ return "Unknown error";
+ return snd_error_codes[errnum];
}
#define SND_FILE_MIXER "/dev/snd/mixer%i%i"
#define SND_MIXER_VERSION_MAX SND_PROTOCOL_VERSION( 1, 1, 0 )
-
+
typedef struct {
- int card;
- int device;
- int fd;
+ int card;
+ int device;
+ int fd;
} snd_mixer_t;
-
-int snd_mixer_open( void **handle, int card, int device )
+
+int snd_mixer_open(void **handle, int card, int device)
{
- int fd, ver;
- char filename[32];
- snd_mixer_t *mixer;
-
- *handle = NULL;
- if ( card < 0 || card >= SND_CARDS ) return -EINVAL;
- sprintf( filename, SND_FILE_MIXER, card, device );
- if ( (fd = open( filename, O_RDWR )) < 0 ) return -errno;
- if ( ioctl( fd, SND_MIXER_IOCTL_PVERSION, &ver ) < 0 ) {
- close( fd );
- return -errno;
- }
- if ( SND_PROTOCOL_UNCOMPATIBLE( ver, SND_MIXER_VERSION_MAX ) ) {
- close( fd );
- return -SND_ERROR_UNCOMPATIBLE_VERSION;
- }
- mixer = (snd_mixer_t *)calloc( 1, sizeof( snd_mixer_t ) );
- if ( mixer == NULL ) {
- close( fd );
- return -ENOMEM;
- }
- mixer -> card = card;
- mixer -> device = device;
- mixer -> fd = fd;
- *handle = mixer;
- return 0;
+ int fd, ver;
+ char filename[32];
+ snd_mixer_t *mixer;
+
+ *handle = NULL;
+ if (card < 0 || card >= SND_CARDS)
+ return -EINVAL;
+ sprintf(filename, SND_FILE_MIXER, card, device);
+ if ((fd = open(filename, O_RDWR)) < 0)
+ return -errno;
+ if (ioctl(fd, SND_MIXER_IOCTL_PVERSION, &ver) < 0) {
+ close(fd);
+ return -errno;
+ }
+ if (SND_PROTOCOL_UNCOMPATIBLE(ver, SND_MIXER_VERSION_MAX)) {
+ close(fd);
+ return -SND_ERROR_UNCOMPATIBLE_VERSION;
+ }
+ mixer = (snd_mixer_t *) calloc(1, sizeof(snd_mixer_t));
+ if (mixer == NULL) {
+ close(fd);
+ return -ENOMEM;
+ }
+ mixer->card = card;
+ mixer->device = device;
+ mixer->fd = fd;
+ *handle = mixer;
+ return 0;
}
-int snd_mixer_close( void *handle )
+int snd_mixer_close(void *handle)
{
- snd_mixer_t *mixer;
- int res;
-
- mixer = (snd_mixer_t *)handle;
- if ( !mixer ) return -EINVAL;
- res = close( mixer -> fd ) < 0 ? -errno : 0;
- free( mixer );
- return res;
+ snd_mixer_t *mixer;
+ int res;
+
+ mixer = (snd_mixer_t *) handle;
+ if (!mixer)
+ return -EINVAL;
+ res = close(mixer->fd) < 0 ? -errno : 0;
+ free(mixer);
+ return res;
}
-int snd_mixer_file_descriptor( void *handle )
+int snd_mixer_file_descriptor(void *handle)
{
- snd_mixer_t *mixer;
-
- mixer = (snd_mixer_t *)handle;
- if ( !mixer ) return -EINVAL;
- return mixer -> fd;
+ snd_mixer_t *mixer;
+
+ mixer = (snd_mixer_t *) handle;
+ if (!mixer)
+ return -EINVAL;
+ return mixer->fd;
}
-int snd_mixer_channels( void *handle )
+int snd_mixer_channels(void *handle)
{
- snd_mixer_t *mixer;
- int result;
-
- mixer = (snd_mixer_t *)handle;
- if ( !mixer ) return -EINVAL;
- if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_CHANNELS, &result ) < 0 )
- return -errno;
- return result;
+ snd_mixer_t *mixer;
+ int result;
+
+ mixer = (snd_mixer_t *) handle;
+ if (!mixer)
+ return -EINVAL;
+ if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNELS, &result) < 0)
+ return -errno;
+ return result;
}
-int snd_mixer_info( void *handle, snd_mixer_info_t *info )
+int snd_mixer_info(void *handle, snd_mixer_info_t * info)
{
- snd_mixer_t *mixer;
-
- mixer = (snd_mixer_t *)handle;
- if ( !mixer ) return -EINVAL;
- if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_INFO, info ) < 0 )
- return -errno;
- return 0;
+ snd_mixer_t *mixer;
+
+ mixer = (snd_mixer_t *) handle;
+ if (!mixer)
+ return -EINVAL;
+ if (ioctl(mixer->fd, SND_MIXER_IOCTL_INFO, info) < 0)
+ return -errno;
+ return 0;
}
-int snd_mixer_exact_mode( void *handle, int enable )
+int snd_mixer_exact_mode(void *handle, int enable)
{
- snd_mixer_t *mixer;
-
- mixer = (snd_mixer_t *)handle;
- if ( !mixer ) return -EINVAL;
- if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_EXACT, &enable ) < 0 )
- return -errno;
- return 0;
+ snd_mixer_t *mixer;
+
+ mixer = (snd_mixer_t *) handle;
+ if (!mixer)
+ return -EINVAL;
+ if (ioctl(mixer->fd, SND_MIXER_IOCTL_EXACT, &enable) < 0)
+ return -errno;
+ return 0;
}
-int snd_mixer_channel( void *handle, const char *channel_id )
+int snd_mixer_channel(void *handle, const char *channel_id)
{
- snd_mixer_t *mixer;
- snd_mixer_channel_info_t info;
- int idx, channels, err;
-
- mixer = (snd_mixer_t *)handle;
- if ( !mixer ) return -EINVAL;
- /* bellow implementation isn't optimized for speed */
- /* info about channels should be cached in the snd_mixer_t structure */
- if ( (channels = snd_mixer_channels( handle )) < 0 )
- return channels;
- for ( idx = 0; idx < channels; idx++ ) {
- if ( (err = snd_mixer_channel_info( handle, idx, &info )) < 0 )
- return err;
- if ( !strncmp( channel_id, info.name, sizeof( info.name ) ) )
- return idx;
- }
- return -EINVAL;
+ snd_mixer_t *mixer;
+ snd_mixer_channel_info_t info;
+ int idx, channels, err;
+
+ mixer = (snd_mixer_t *) handle;
+ if (!mixer)
+ return -EINVAL;
+ /* bellow implementation isn't optimized for speed */
+ /* info about channels should be cached in the snd_mixer_t structure */
+ if ((channels = snd_mixer_channels(handle)) < 0)
+ return channels;
+ for (idx = 0; idx < channels; idx++) {
+ if ((err = snd_mixer_channel_info(handle, idx, &info)) < 0)
+ return err;
+ if (!strncmp(channel_id, info.name, sizeof(info.name)))
+ return idx;
+ }
+ return -EINVAL;
}
-int snd_mixer_channel_info( void *handle, int channel, snd_mixer_channel_info_t *info )
+int snd_mixer_channel_info(void *handle, int channel, snd_mixer_channel_info_t * info)
{
- snd_mixer_t *mixer;
-
- mixer = (snd_mixer_t *)handle;
- if ( !mixer ) return -EINVAL;
- info -> channel = channel;
- if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_CHANNEL_INFO, info ) < 0 )
- return -errno;
- return 0;
+ snd_mixer_t *mixer;
+
+ mixer = (snd_mixer_t *) handle;
+ if (!mixer)
+ return -EINVAL;
+ info->channel = channel;
+ if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_INFO, info) < 0)
+ return -errno;
+ return 0;
}
-int snd_mixer_channel_read( void *handle, int channel, snd_mixer_channel_t *data )
+int snd_mixer_channel_read(void *handle, int channel, snd_mixer_channel_t * data)
{
- snd_mixer_t *mixer;
-
- mixer = (snd_mixer_t *)handle;
- if ( !mixer ) return -EINVAL;
- data -> channel = channel;
- if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_CHANNEL_READ, data ) < 0 )
- return -errno;
- return 0;
+ snd_mixer_t *mixer;
+
+ mixer = (snd_mixer_t *) handle;
+ if (!mixer)
+ return -EINVAL;
+ data->channel = channel;
+ if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_READ, data) < 0)
+ return -errno;
+ return 0;
}
-int snd_mixer_channel_write( void *handle, int channel, snd_mixer_channel_t *data )
+int snd_mixer_channel_write(void *handle, int channel, snd_mixer_channel_t * data)
{
- snd_mixer_t *mixer;
-
- mixer = (snd_mixer_t *)handle;
- if ( !mixer ) return -EINVAL;
- data -> channel = channel;
- if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_CHANNEL_WRITE, data ) < 0 )
- return -errno;
- return 0;
+ snd_mixer_t *mixer;
+
+ mixer = (snd_mixer_t *) handle;
+ if (!mixer)
+ return -EINVAL;
+ data->channel = channel;
+ if (ioctl(mixer->fd, SND_MIXER_IOCTL_CHANNEL_WRITE, data) < 0)
+ return -errno;
+ return 0;
}
-int snd_mixer_switches( void *handle )
+int snd_mixer_switches(void *handle)
{
- snd_mixer_t *mixer;
- int result;
-
- mixer = (snd_mixer_t *)handle;
- if ( !mixer ) return -EINVAL;
- if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_SWITCHES, &result ) < 0 )
- return -errno;
- return result;
+ snd_mixer_t *mixer;
+ int result;
+
+ mixer = (snd_mixer_t *) handle;
+ if (!mixer)
+ return -EINVAL;
+ if (ioctl(mixer->fd, SND_MIXER_IOCTL_SWITCHES, &result) < 0)
+ return -errno;
+ return result;
}
-int snd_mixer_switch( void *handle, const char *switch_id )
+int snd_mixer_switch(void *handle, const char *switch_id)
{
- snd_mixer_t *mixer;
- snd_mixer_switch_t uswitch;
- int idx, switches, err;
-
- mixer = (snd_mixer_t *)handle;
- if ( !mixer ) return -EINVAL;
- /* bellow implementation isn't optimized for speed */
- /* info about switches should be cached in the snd_mixer_t structure */
- if ( (switches = snd_mixer_switches( handle )) < 0 )
- return switches;
- for ( idx = 0; idx < switches; idx++ ) {
- if ( (err = snd_mixer_switch_read( handle, idx, &uswitch )) < 0 )
- return err;
- if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) )
- return idx;
- }
- return -EINVAL;
+ snd_mixer_t *mixer;
+ snd_mixer_switch_t uswitch;
+ int idx, switches, err;
+
+ mixer = (snd_mixer_t *) handle;
+ if (!mixer)
+ return -EINVAL;
+ /* bellow implementation isn't optimized for speed */
+ /* info about switches should be cached in the snd_mixer_t structure */
+ if ((switches = snd_mixer_switches(handle)) < 0)
+ return switches;
+ for (idx = 0; idx < switches; idx++) {
+ if ((err = snd_mixer_switch_read(handle, idx, &uswitch)) < 0)
+ return err;
+ if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name)))
+ return idx;
+ }
+ return -EINVAL;
}
-int snd_mixer_switch_read( void *handle, int switchn, snd_mixer_switch_t *data )
+int snd_mixer_switch_read(void *handle, int switchn, snd_mixer_switch_t * data)
{
- snd_mixer_t *mixer;
-
- mixer = (snd_mixer_t *)handle;
- if ( !mixer ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_SWITCH_READ, data ) < 0 )
- return -errno;
- return 0;
+ snd_mixer_t *mixer;
+
+ mixer = (snd_mixer_t *) handle;
+ if (!mixer)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(mixer->fd, SND_MIXER_IOCTL_SWITCH_READ, data) < 0)
+ return -errno;
+ return 0;
}
-int snd_mixer_switch_write( void *handle, int switchn, snd_mixer_switch_t *data )
+int snd_mixer_switch_write(void *handle, int switchn, snd_mixer_switch_t * data)
{
- snd_mixer_t *mixer;
-
- mixer = (snd_mixer_t *)handle;
- if ( !mixer ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( mixer -> fd, SND_MIXER_IOCTL_SWITCH_WRITE, data ) < 0 )
- return -errno;
- return 0;
+ snd_mixer_t *mixer;
+
+ mixer = (snd_mixer_t *) handle;
+ if (!mixer)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(mixer->fd, SND_MIXER_IOCTL_SWITCH_WRITE, data) < 0)
+ return -errno;
+ return 0;
}
-int snd_mixer_read( void *handle, snd_mixer_callbacks_t *callbacks )
+int snd_mixer_read(void *handle, snd_mixer_callbacks_t * callbacks)
{
- snd_mixer_t *mixer;
- int idx, result, count;
- unsigned int cmd, tmp;
- unsigned char buffer[ 64 ];
-
- mixer = (snd_mixer_t *)handle;
- if ( !mixer ) return -EINVAL;
- count = 0;
- while ( (result = read( mixer -> fd, &buffer, sizeof( buffer ))) > 0 ) {
- if ( result & 7 ) return -EIO;
- if ( !callbacks ) continue;
- for ( idx = 0; idx < result; idx += 8 ) {
- cmd = *(unsigned int *)&buffer[ idx ];
- tmp = *(unsigned int *)&buffer[ idx + 4 ];
- if ( cmd == 0 && callbacks -> channel_was_changed ) {
- callbacks -> channel_was_changed( callbacks -> private_data, (int)tmp );
- }
- if ( cmd == 1 && callbacks -> switch_was_changed ) {
- callbacks -> switch_was_changed( callbacks -> private_data, (int)tmp );
- }
- }
- count += result >> 3; /* return only number of changes */
- }
- return result >= 0 ? count : -errno;
+ snd_mixer_t *mixer;
+ int idx, result, count;
+ unsigned int cmd, tmp;
+ unsigned char buffer[64];
+
+ mixer = (snd_mixer_t *) handle;
+ if (!mixer)
+ return -EINVAL;
+ count = 0;
+ while ((result = read(mixer->fd, &buffer, sizeof(buffer))) > 0) {
+ if (result & 7)
+ return -EIO;
+ if (!callbacks)
+ continue;
+ for (idx = 0; idx < result; idx += 8) {
+ cmd = *(unsigned int *) &buffer[idx];
+ tmp = *(unsigned int *) &buffer[idx + 4];
+ if (cmd == 0 && callbacks->channel_was_changed) {
+ callbacks->channel_was_changed(callbacks->private_data, (int) tmp);
+ }
+ if (cmd == 1 && callbacks->switch_was_changed) {
+ callbacks->switch_was_changed(callbacks->private_data, (int) tmp);
+ }
+ }
+ count += result >> 3; /* return only number of changes */
+ }
+ return result >= 0 ? count : -errno;
}
#define SND_FILE_PCM "/dev/snd/pcm%i%i"
#define SND_PCM_VERSION_MAX SND_PROTOCOL_VERSION( 1, 0, 1 )
-
+
typedef struct {
- int card;
- int device;
- int fd;
+ int card;
+ int device;
+ int fd;
} snd_pcm_t;
-
-int snd_pcm_open( void **handle, int card, int device, int mode )
+
+int snd_pcm_open(void **handle, int card, int device, int mode)
{
- int fd, ver;
- char filename[32];
- snd_pcm_t *pcm;
-
- *handle = NULL;
- if ( card < 0 || card >= SND_CARDS ) return -EINVAL;
- sprintf( filename, SND_FILE_PCM, card, device );
- if ( (fd = open( filename, mode )) < 0 ) return -errno;
- if ( ioctl( fd, SND_PCM_IOCTL_PVERSION, &ver ) < 0 ) {
- close( fd );
- return -errno;
- }
- if ( SND_PROTOCOL_UNCOMPATIBLE( ver, SND_PCM_VERSION_MAX ) ) {
- close( fd );
- return -SND_ERROR_UNCOMPATIBLE_VERSION;
- }
- pcm = (snd_pcm_t *)calloc( 1, sizeof( snd_pcm_t ) );
- if ( pcm == NULL ) {
- close( fd );
- return -ENOMEM;
- }
- pcm -> card = card;
- pcm -> device = device;
- pcm -> fd = fd;
- *handle = pcm;
- return 0;
+ int fd, ver;
+ char filename[32];
+ snd_pcm_t *pcm;
+
+ *handle = NULL;
+ if (card < 0 || card >= SND_CARDS)
+ return -EINVAL;
+ sprintf(filename, SND_FILE_PCM, card, device);
+ if ((fd = open(filename, mode)) < 0)
+ return -errno;
+ if (ioctl(fd, SND_PCM_IOCTL_PVERSION, &ver) < 0) {
+ close(fd);
+ return -errno;
+ }
+ if (SND_PROTOCOL_UNCOMPATIBLE(ver, SND_PCM_VERSION_MAX)) {
+ close(fd);
+ return -SND_ERROR_UNCOMPATIBLE_VERSION;
+ }
+ pcm = (snd_pcm_t *) calloc(1, sizeof(snd_pcm_t));
+ if (pcm == NULL) {
+ close(fd);
+ return -ENOMEM;
+ }
+ pcm->card = card;
+ pcm->device = device;
+ pcm->fd = fd;
+ *handle = pcm;
+ return 0;
}
-int snd_pcm_close( void *handle )
+int snd_pcm_close(void *handle)
{
- snd_pcm_t *pcm;
- int res;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- res = close( pcm -> fd ) < 0 ? -errno : 0;
- free( pcm );
- return res;
+ snd_pcm_t *pcm;
+ int res;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ res = close(pcm->fd) < 0 ? -errno : 0;
+ free(pcm);
+ return res;
}
-int snd_pcm_file_descriptor( void *handle )
+int snd_pcm_file_descriptor(void *handle)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- return pcm -> fd;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ return pcm->fd;
}
-int snd_pcm_block_mode( void *handle, int enable )
+int snd_pcm_block_mode(void *handle, int enable)
{
- snd_pcm_t *pcm;
- long flags;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( fcntl( pcm -> fd, F_GETFL, &flags ) < 0 )
- return -errno;
- if ( enable )
- flags |= O_NONBLOCK;
- else
- flags &= ~O_NONBLOCK;
- if ( fcntl( pcm -> fd, F_SETFL, &flags ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+ long flags;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (fcntl(pcm->fd, F_GETFL, &flags) < 0)
+ return -errno;
+ if (enable)
+ flags |= O_NONBLOCK;
+ else
+ flags &= ~O_NONBLOCK;
+ if (fcntl(pcm->fd, F_SETFL, &flags) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_info( void *handle, snd_pcm_info_t *info )
+int snd_pcm_info(void *handle, snd_pcm_info_t * info)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_INFO, info ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_INFO, info) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_playback_info( void *handle, snd_pcm_playback_info_t *info )
+int snd_pcm_playback_info(void *handle, snd_pcm_playback_info_t * info)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PLAYBACK_INFO, info ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_INFO, info) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_record_info( void *handle, snd_pcm_record_info_t *info )
+int snd_pcm_record_info(void *handle, snd_pcm_record_info_t * info)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RECORD_INFO, info ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_INFO, info) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_playback_switches( void *handle )
+int snd_pcm_playback_switches(void *handle)
{
- snd_pcm_t *pcm;
- int result;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PSWITCHES, &result ) < 0 )
- return -errno;
- return result;
+ snd_pcm_t *pcm;
+ int result;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_PSWITCHES, &result) < 0)
+ return -errno;
+ return result;
}
-int snd_pcm_playback_switch( void *handle, const char *switch_id )
+int snd_pcm_playback_switch(void *handle, const char *switch_id)
{
- snd_pcm_t *pcm;
- snd_pcm_switch_t uswitch;
- int idx, switches, err;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- /* bellow implementation isn't optimized for speed */
- /* info about switches should be cached in the snd_mixer_t structure */
- if ( (switches = snd_pcm_playback_switches( handle )) < 0 )
- return switches;
- for ( idx = 0; idx < switches; idx++ ) {
- if ( (err = snd_pcm_playback_switch_read( handle, idx, &uswitch )) < 0 )
- return err;
- if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) )
- return idx;
- }
- return -EINVAL;
+ snd_pcm_t *pcm;
+ snd_pcm_switch_t uswitch;
+ int idx, switches, err;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ /* bellow implementation isn't optimized for speed */
+ /* info about switches should be cached in the snd_mixer_t structure */
+ if ((switches = snd_pcm_playback_switches(handle)) < 0)
+ return switches;
+ for (idx = 0; idx < switches; idx++) {
+ if ((err = snd_pcm_playback_switch_read(handle, idx, &uswitch)) < 0)
+ return err;
+ if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name)))
+ return idx;
+ }
+ return -EINVAL;
}
-int snd_pcm_playback_switch_read( void *handle, int switchn, snd_pcm_switch_t *data )
+int snd_pcm_playback_switch_read(void *handle, int switchn, snd_pcm_switch_t * data)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PSWITCH_READ, data ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_PSWITCH_READ, data) < 0)
+ return -errno;
+ return 0;
}
-
-int snd_pcm_playback_switch_write( void *handle, int switchn, snd_pcm_switch_t *data )
-{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PSWITCH_WRITE, data ) < 0 )
- return -errno;
- return 0;
-}
-int snd_pcm_record_switches( void *handle )
+int snd_pcm_playback_switch_write(void *handle, int switchn, snd_pcm_switch_t * data)
{
- snd_pcm_t *pcm;
- int result;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RSWITCHES, &result ) < 0 )
- return -errno;
- return result;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_PSWITCH_WRITE, data) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_record_switch( void *handle, const char *switch_id )
+int snd_pcm_record_switches(void *handle)
{
- snd_pcm_t *pcm;
- snd_pcm_switch_t uswitch;
- int idx, switches, err;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- /* bellow implementation isn't optimized for speed */
- /* info about switches should be cached in the snd_mixer_t structure */
- if ( (switches = snd_pcm_record_switches( handle )) < 0 )
- return switches;
- for ( idx = 0; idx < switches; idx++ ) {
- if ( (err = snd_pcm_record_switch_read( handle, idx, &uswitch )) < 0 )
- return err;
- if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) )
- return idx;
- }
- return -EINVAL;
+ snd_pcm_t *pcm;
+ int result;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_RSWITCHES, &result) < 0)
+ return -errno;
+ return result;
}
-int snd_pcm_record_switch_read( void *handle, int switchn, snd_pcm_switch_t *data )
+int snd_pcm_record_switch(void *handle, const char *switch_id)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RSWITCH_READ, data ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+ snd_pcm_switch_t uswitch;
+ int idx, switches, err;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ /* bellow implementation isn't optimized for speed */
+ /* info about switches should be cached in the snd_mixer_t structure */
+ if ((switches = snd_pcm_record_switches(handle)) < 0)
+ return switches;
+ for (idx = 0; idx < switches; idx++) {
+ if ((err = snd_pcm_record_switch_read(handle, idx, &uswitch)) < 0)
+ return err;
+ if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name)))
+ return idx;
+ }
+ return -EINVAL;
}
-
-int snd_pcm_record_switch_write( void *handle, int switchn, snd_pcm_switch_t *data )
+
+int snd_pcm_record_switch_read(void *handle, int switchn, snd_pcm_switch_t * data)
{
- snd_pcm_t *pcm;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_RSWITCH_READ, data) < 0)
+ return -errno;
+ return 0;
+}
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RSWITCH_WRITE, data ) < 0 )
- return -errno;
- return 0;
-}
+int snd_pcm_record_switch_write(void *handle, int switchn, snd_pcm_switch_t * data)
+{
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_RSWITCH_WRITE, data) < 0)
+ return -errno;
+ return 0;
+}
-int snd_pcm_playback_format( void *handle, snd_pcm_format_t *format )
+int snd_pcm_playback_format(void *handle, snd_pcm_format_t * format)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PLAYBACK_FORMAT, format ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_FORMAT, format) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_record_format( void *handle, snd_pcm_format_t *format )
+int snd_pcm_record_format(void *handle, snd_pcm_format_t * format)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RECORD_FORMAT, format ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_FORMAT, format) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_playback_params( void *handle, snd_pcm_playback_params_t *params )
+int snd_pcm_playback_params(void *handle, snd_pcm_playback_params_t * params)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PLAYBACK_PARAMS, params ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_PARAMS, params) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_record_params( void *handle, snd_pcm_record_params_t *params )
+int snd_pcm_record_params(void *handle, snd_pcm_record_params_t * params)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RECORD_PARAMS, params ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_PARAMS, params) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_playback_status( void *handle, snd_pcm_playback_status_t *status )
+int snd_pcm_playback_status(void *handle, snd_pcm_playback_status_t * status)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PLAYBACK_STATUS, status ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_STATUS, status) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_record_status( void *handle, snd_pcm_record_status_t *status )
+int snd_pcm_record_status(void *handle, snd_pcm_record_status_t * status)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RECORD_STATUS, status ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_STATUS, status) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_drain_playback( void *handle )
+int snd_pcm_drain_playback(void *handle)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_DRAIN_PLAYBACK ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_DRAIN_PLAYBACK) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_flush_playback( void *handle )
+int snd_pcm_flush_playback(void *handle)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_FLUSH_PLAYBACK ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_FLUSH_PLAYBACK) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_flush_record( void *handle )
+int snd_pcm_flush_record(void *handle)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_FLUSH_RECORD ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_FLUSH_RECORD) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_playback_pause( void *handle, int enable )
+int snd_pcm_playback_pause(void *handle, int enable)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PLAYBACK_PAUSE, &enable ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_PAUSE, &enable) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_playback_time( void *handle, int enable )
+int snd_pcm_playback_time(void *handle, int enable)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PLAYBACK_TIME, &enable ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_PLAYBACK_TIME, &enable) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_record_time( void *handle, int enable )
+int snd_pcm_record_time(void *handle, int enable)
{
- snd_pcm_t *pcm;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- if ( ioctl( pcm -> fd, SND_PCM_IOCTL_RECORD_TIME, &enable ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_t *pcm;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ if (ioctl(pcm->fd, SND_PCM_IOCTL_RECORD_TIME, &enable) < 0)
+ return -errno;
+ return 0;
}
-ssize_t snd_pcm_write( void *handle, const void *buffer, size_t size )
+ssize_t snd_pcm_write(void *handle, const void *buffer, size_t size)
{
- snd_pcm_t *pcm;
- ssize_t result;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- result = write( pcm -> fd, buffer, size );
- if ( result < 0 ) return -errno;
- return result;
+ snd_pcm_t *pcm;
+ ssize_t result;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ result = write(pcm->fd, buffer, size);
+ if (result < 0)
+ return -errno;
+ return result;
}
-ssize_t snd_pcm_read( void *handle, void *buffer, size_t size )
+ssize_t snd_pcm_read(void *handle, void *buffer, size_t size)
{
- snd_pcm_t *pcm;
- ssize_t result;
-
- pcm = (snd_pcm_t *)handle;
- if ( !pcm ) return -EINVAL;
- result = read( pcm -> fd, buffer, size );
- if ( result < 0 ) return -errno;
- return result;
+ snd_pcm_t *pcm;
+ ssize_t result;
+
+ pcm = (snd_pcm_t *) handle;
+ if (!pcm)
+ return -EINVAL;
+ result = read(pcm->fd, buffer, size);
+ if (result < 0)
+ return -errno;
+ return result;
}
#define SND_FILE_PCM_LB "/proc/asound/%i/pcm%i%s"
#define SND_PCM_LB_VERSION_MAX SND_PROTOCOL_VERSION( 1, 0, 0 )
-
+
typedef struct {
- int card;
- int device;
- int fd;
+ int card;
+ int device;
+ int fd;
} snd_pcm_loopback_t;
-
-int snd_pcm_loopback_open( void **handle, int card, int device, int mode )
+
+int snd_pcm_loopback_open(void **handle, int card, int device, int mode)
{
- int fd, ver;
- char filename[32];
- snd_pcm_loopback_t *lb;
-
- *handle = NULL;
- if ( card < 0 || card >= SND_CARDS ) return -EINVAL;
- sprintf( filename, SND_FILE_PCM_LB, card, device,
- mode == SND_PCM_LB_OPEN_RECORD ? "r" : "p" );
- if ( (fd = open( filename, mode )) < 0 ) return -errno;
- if ( ioctl( fd, SND_PCM_IOCTL_PVERSION, &ver ) < 0 ) {
- close( fd );
- return -errno;
- }
- if ( SND_PROTOCOL_UNCOMPATIBLE( ver, SND_PCM_LB_VERSION_MAX ) ) {
- close( fd );
- return -SND_ERROR_UNCOMPATIBLE_VERSION;
- }
- lb = (snd_pcm_loopback_t *)calloc( 1, sizeof( snd_pcm_loopback_t ) );
- if ( lb == NULL ) {
- close( fd );
- return -ENOMEM;
- }
- lb -> card = card;
- lb -> device = device;
- lb -> fd = fd;
- *handle = lb;
- return 0;
+ int fd, ver;
+ char filename[32];
+ snd_pcm_loopback_t *lb;
+
+ *handle = NULL;
+ if (card < 0 || card >= SND_CARDS)
+ return -EINVAL;
+ sprintf(filename, SND_FILE_PCM_LB, card, device,
+ mode == SND_PCM_LB_OPEN_RECORD ? "r" : "p");
+ if ((fd = open(filename, mode)) < 0)
+ return -errno;
+ if (ioctl(fd, SND_PCM_IOCTL_PVERSION, &ver) < 0) {
+ close(fd);
+ return -errno;
+ }
+ if (SND_PROTOCOL_UNCOMPATIBLE(ver, SND_PCM_LB_VERSION_MAX)) {
+ close(fd);
+ return -SND_ERROR_UNCOMPATIBLE_VERSION;
+ }
+ lb = (snd_pcm_loopback_t *) calloc(1, sizeof(snd_pcm_loopback_t));
+ if (lb == NULL) {
+ close(fd);
+ return -ENOMEM;
+ }
+ lb->card = card;
+ lb->device = device;
+ lb->fd = fd;
+ *handle = lb;
+ return 0;
}
-int snd_pcm_loopback_close( void *handle )
+int snd_pcm_loopback_close(void *handle)
{
- snd_pcm_loopback_t *lb;
- int res;
-
- lb = (snd_pcm_loopback_t *)handle;
- if ( !lb ) return -EINVAL;
- res = close( lb -> fd ) < 0 ? -errno : 0;
- free( lb );
- return res;
+ snd_pcm_loopback_t *lb;
+ int res;
+
+ lb = (snd_pcm_loopback_t *) handle;
+ if (!lb)
+ return -EINVAL;
+ res = close(lb->fd) < 0 ? -errno : 0;
+ free(lb);
+ return res;
}
-int snd_pcm_loopback_file_descriptor( void *handle )
+int snd_pcm_loopback_file_descriptor(void *handle)
{
- snd_pcm_loopback_t *lb;
-
- lb = (snd_pcm_loopback_t *)handle;
- if ( !lb ) return -EINVAL;
- return lb -> fd;
+ snd_pcm_loopback_t *lb;
+
+ lb = (snd_pcm_loopback_t *) handle;
+ if (!lb)
+ return -EINVAL;
+ return lb->fd;
}
-int snd_pcm_loopback_block_mode( void *handle, int enable )
+int snd_pcm_loopback_block_mode(void *handle, int enable)
{
- snd_pcm_loopback_t *lb;
- long flags;
-
- lb = (snd_pcm_loopback_t *)handle;
- if ( !lb ) return -EINVAL;
- if ( fcntl( lb -> fd, F_GETFL, &flags ) < 0 )
- return -errno;
- if ( enable )
- flags |= O_NONBLOCK;
- else
- flags &= ~O_NONBLOCK;
- if ( fcntl( lb -> fd, F_SETFL, &flags ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_loopback_t *lb;
+ long flags;
+
+ lb = (snd_pcm_loopback_t *) handle;
+ if (!lb)
+ return -EINVAL;
+ if (fcntl(lb->fd, F_GETFL, &flags) < 0)
+ return -errno;
+ if (enable)
+ flags |= O_NONBLOCK;
+ else
+ flags &= ~O_NONBLOCK;
+ if (fcntl(lb->fd, F_SETFL, &flags) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_loopback_stream_mode( void *handle, int mode )
+int snd_pcm_loopback_stream_mode(void *handle, int mode)
{
- snd_pcm_loopback_t *lb;
- long lmode = mode;
-
- lb = (snd_pcm_loopback_t *)handle;
- if ( !lb ) return -EINVAL;
- if ( ioctl( lb -> fd, SND_PCM_LB_IOCTL_STREAM_MODE, &lmode ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_loopback_t *lb;
+ long lmode = mode;
+
+ lb = (snd_pcm_loopback_t *) handle;
+ if (!lb)
+ return -EINVAL;
+ if (ioctl(lb->fd, SND_PCM_LB_IOCTL_STREAM_MODE, &lmode) < 0)
+ return -errno;
+ return 0;
}
-int snd_pcm_loopback_format( void *handle, snd_pcm_format_t *format )
+int snd_pcm_loopback_format(void *handle, snd_pcm_format_t * format)
{
- snd_pcm_loopback_t *lb;
-
- lb = (snd_pcm_loopback_t *)handle;
- if ( !lb ) return -EINVAL;
- if ( ioctl( lb -> fd, SND_PCM_LB_IOCTL_FORMAT, format ) < 0 )
- return -errno;
- return 0;
+ snd_pcm_loopback_t *lb;
+
+ lb = (snd_pcm_loopback_t *) handle;
+ if (!lb)
+ return -EINVAL;
+ if (ioctl(lb->fd, SND_PCM_LB_IOCTL_FORMAT, format) < 0)
+ return -errno;
+ return 0;
}
-ssize_t snd_pcm_loopback_read( void *handle, void *buffer, size_t size )
+ssize_t snd_pcm_loopback_read(void *handle, void *buffer, size_t size)
{
- snd_pcm_loopback_t *lb;
- ssize_t result;
-
- lb = (snd_pcm_loopback_t *)handle;
- if ( !lb ) return -EINVAL;
- result = read( lb -> fd, buffer, size );
- if ( result < 0 ) return -errno;
- return result;
+ snd_pcm_loopback_t *lb;
+ ssize_t result;
+
+ lb = (snd_pcm_loopback_t *) handle;
+ if (!lb)
+ return -EINVAL;
+ result = read(lb->fd, buffer, size);
+ if (result < 0)
+ return -errno;
+ return result;
}
#define SND_FILE_RAWMIDI "/dev/snd/midi%i%i"
#define SND_PCM_VERSION_MAX SND_PROTOCOL_VERSION( 1, 0, 0 )
-
+
typedef struct {
- int card;
- int device;
- int fd;
+ int card;
+ int device;
+ int fd;
} snd_rawmidi_t;
-
-int snd_rawmidi_open( void **handle, int card, int device, int mode )
+
+int snd_rawmidi_open(void **handle, int card, int device, int mode)
{
- int fd, ver;
- char filename[32];
- snd_rawmidi_t *rmidi;
-
- *handle = NULL;
- if ( card < 0 || card >= SND_CARDS ) return -EINVAL;
- sprintf( filename, SND_FILE_RAWMIDI, card, device );
- if ( (fd = open( filename, mode )) < 0 ) return -errno;
- if ( ioctl( fd, SND_RAWMIDI_IOCTL_PVERSION, &ver ) < 0 ) {
- close( fd );
- return -errno;
- }
- if ( SND_PROTOCOL_UNCOMPATIBLE( ver, SND_PCM_VERSION_MAX ) ) {
- close( fd );
- return -SND_ERROR_UNCOMPATIBLE_VERSION;
- }
- rmidi = (snd_rawmidi_t *)calloc( 1, sizeof( snd_rawmidi_t ) );
- if ( rmidi == NULL ) {
- close( fd );
- return -ENOMEM;
- }
- rmidi -> card = card;
- rmidi -> device = device;
- rmidi -> fd = fd;
- *handle = rmidi;
- return 0;
+ int fd, ver;
+ char filename[32];
+ snd_rawmidi_t *rmidi;
+
+ *handle = NULL;
+ if (card < 0 || card >= SND_CARDS)
+ return -EINVAL;
+ sprintf(filename, SND_FILE_RAWMIDI, card, device);
+ if ((fd = open(filename, mode)) < 0)
+ return -errno;
+ if (ioctl(fd, SND_RAWMIDI_IOCTL_PVERSION, &ver) < 0) {
+ close(fd);
+ return -errno;
+ }
+ if (SND_PROTOCOL_UNCOMPATIBLE(ver, SND_PCM_VERSION_MAX)) {
+ close(fd);
+ return -SND_ERROR_UNCOMPATIBLE_VERSION;
+ }
+ rmidi = (snd_rawmidi_t *) calloc(1, sizeof(snd_rawmidi_t));
+ if (rmidi == NULL) {
+ close(fd);
+ return -ENOMEM;
+ }
+ rmidi->card = card;
+ rmidi->device = device;
+ rmidi->fd = fd;
+ *handle = rmidi;
+ return 0;
}
-int snd_rawmidi_close( void *handle )
+int snd_rawmidi_close(void *handle)
{
- snd_rawmidi_t *rmidi;
- int res;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- res = close( rmidi -> fd ) < 0 ? -errno : 0;
- free( rmidi );
- return res;
+ snd_rawmidi_t *rmidi;
+ int res;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ res = close(rmidi->fd) < 0 ? -errno : 0;
+ free(rmidi);
+ return res;
}
-int snd_rawmidi_file_descriptor( void *handle )
+int snd_rawmidi_file_descriptor(void *handle)
{
- snd_rawmidi_t *rmidi;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- return rmidi -> fd;
+ snd_rawmidi_t *rmidi;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ return rmidi->fd;
}
-int snd_rawmidi_block_mode( void *handle, int enable )
+int snd_rawmidi_block_mode(void *handle, int enable)
{
- snd_rawmidi_t *rmidi;
- long flags;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- if ( fcntl( rmidi -> fd, F_GETFL, &flags ) < 0 )
- return -errno;
- if ( enable )
- flags |= O_NONBLOCK;
- else
- flags &= ~O_NONBLOCK;
- if ( fcntl( rmidi -> fd, F_SETFL, &flags ) < 0 )
- return -errno;
- return 0;
+ snd_rawmidi_t *rmidi;
+ long flags;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ if (fcntl(rmidi->fd, F_GETFL, &flags) < 0)
+ return -errno;
+ if (enable)
+ flags |= O_NONBLOCK;
+ else
+ flags &= ~O_NONBLOCK;
+ if (fcntl(rmidi->fd, F_SETFL, &flags) < 0)
+ return -errno;
+ return 0;
}
-int snd_rawmidi_info( void *handle, snd_rawmidi_info_t *info )
+int snd_rawmidi_info(void *handle, snd_rawmidi_info_t * info)
{
- snd_rawmidi_t *rmidi;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_INFO, info ) < 0 )
- return -errno;
- return 0;
+ snd_rawmidi_t *rmidi;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_INFO, info) < 0)
+ return -errno;
+ return 0;
}
-int snd_rawmidi_output_switches( void *handle )
+int snd_rawmidi_output_switches(void *handle)
{
- snd_rawmidi_t *rmidi;
- int result;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_OSWITCHES, &result ) < 0 )
- return -errno;
- return result;
+ snd_rawmidi_t *rmidi;
+ int result;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OSWITCHES, &result) < 0)
+ return -errno;
+ return result;
}
-int snd_rawmidi_output_switch( void *handle, const char *switch_id )
+int snd_rawmidi_output_switch(void *handle, const char *switch_id)
{
- snd_rawmidi_t *rmidi;
- snd_rawmidi_switch_t uswitch;
- int idx, switches, err;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- /* bellow implementation isn't optimized for speed */
- /* info about switches should be cached in the snd_mixer_t structure */
- if ( (switches = snd_rawmidi_output_switches( handle )) < 0 )
- return switches;
- for ( idx = 0; idx < switches; idx++ ) {
- if ( (err = snd_rawmidi_output_switch_read( handle, idx, &uswitch )) < 0 )
- return err;
- if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) )
- return idx;
- }
- return -EINVAL;
+ snd_rawmidi_t *rmidi;
+ snd_rawmidi_switch_t uswitch;
+ int idx, switches, err;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ /* bellow implementation isn't optimized for speed */
+ /* info about switches should be cached in the snd_mixer_t structure */
+ if ((switches = snd_rawmidi_output_switches(handle)) < 0)
+ return switches;
+ for (idx = 0; idx < switches; idx++) {
+ if ((err = snd_rawmidi_output_switch_read(handle, idx, &uswitch)) < 0)
+ return err;
+ if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name)))
+ return idx;
+ }
+ return -EINVAL;
}
-int snd_rawmidi_output_switch_read( void *handle, int switchn, snd_rawmidi_switch_t *data )
+int snd_rawmidi_output_switch_read(void *handle, int switchn, snd_rawmidi_switch_t * data)
{
- snd_rawmidi_t *rmidi;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_OSWITCH_READ, data ) < 0 )
- return -errno;
- return 0;
+ snd_rawmidi_t *rmidi;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OSWITCH_READ, data) < 0)
+ return -errno;
+ return 0;
}
-
-int snd_rawmidi_output_switch_write( void *handle, int switchn, snd_rawmidi_switch_t *data )
+
+int snd_rawmidi_output_switch_write(void *handle, int switchn, snd_rawmidi_switch_t * data)
{
- snd_rawmidi_t *rmidi;
+ snd_rawmidi_t *rmidi;
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_OSWITCH_WRITE, data ) < 0 )
- return -errno;
- return 0;
-}
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OSWITCH_WRITE, data) < 0)
+ return -errno;
+ return 0;
+}
-int snd_rawmidi_input_switches( void *handle )
+int snd_rawmidi_input_switches(void *handle)
{
- snd_rawmidi_t *rmidi;
- int result;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_ISWITCHES, &result ) < 0 )
- return -errno;
- return result;
+ snd_rawmidi_t *rmidi;
+ int result;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_ISWITCHES, &result) < 0)
+ return -errno;
+ return result;
}
-int snd_rawmidi_input_switch( void *handle, const char *switch_id )
+int snd_rawmidi_input_switch(void *handle, const char *switch_id)
{
- snd_rawmidi_t *rmidi;
- snd_rawmidi_switch_t uswitch;
- int idx, switches, err;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- /* bellow implementation isn't optimized for speed */
- /* info about switches should be cached in the snd_mixer_t structure */
- if ( (switches = snd_rawmidi_input_switches( handle )) < 0 )
- return switches;
- for ( idx = 0; idx < switches; idx++ ) {
- if ( (err = snd_rawmidi_input_switch_read( handle, idx, &uswitch )) < 0 )
- return err;
- if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) )
- return idx;
- }
- return -EINVAL;
+ snd_rawmidi_t *rmidi;
+ snd_rawmidi_switch_t uswitch;
+ int idx, switches, err;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ /* bellow implementation isn't optimized for speed */
+ /* info about switches should be cached in the snd_mixer_t structure */
+ if ((switches = snd_rawmidi_input_switches(handle)) < 0)
+ return switches;
+ for (idx = 0; idx < switches; idx++) {
+ if ((err = snd_rawmidi_input_switch_read(handle, idx, &uswitch)) < 0)
+ return err;
+ if (!strncmp(switch_id, uswitch.name, sizeof(uswitch.name)))
+ return idx;
+ }
+ return -EINVAL;
}
-int snd_rawmidi_input_switch_read( void *handle, int switchn, snd_rawmidi_switch_t *data )
+int snd_rawmidi_input_switch_read(void *handle, int switchn, snd_rawmidi_switch_t * data)
{
- snd_rawmidi_t *rmidi;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_ISWITCH_READ, data ) < 0 )
- return -errno;
- return 0;
+ snd_rawmidi_t *rmidi;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_ISWITCH_READ, data) < 0)
+ return -errno;
+ return 0;
}
-
-int snd_rawmidi_input_switch_write( void *handle, int switchn, snd_rawmidi_switch_t *data )
+
+int snd_rawmidi_input_switch_write(void *handle, int switchn, snd_rawmidi_switch_t * data)
{
- snd_rawmidi_t *rmidi;
+ snd_rawmidi_t *rmidi;
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- data -> switchn = switchn;
- if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_ISWITCH_WRITE, data ) < 0 )
- return -errno;
- return 0;
-}
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ data->switchn = switchn;
+ if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_ISWITCH_WRITE, data) < 0)
+ return -errno;
+ return 0;
+}
-int snd_rawmidi_output_params( void *handle, snd_rawmidi_output_params_t *params )
+int snd_rawmidi_output_params(void *handle, snd_rawmidi_output_params_t * params)
{
- snd_rawmidi_t *rmidi;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_OUTPUT_PARAMS, params ) < 0 )
- return -errno;
- return 0;
+ snd_rawmidi_t *rmidi;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OUTPUT_PARAMS, params) < 0)
+ return -errno;
+ return 0;
}
-int snd_rawmidi_input_params( void *handle, snd_rawmidi_input_params_t *params )
+int snd_rawmidi_input_params(void *handle, snd_rawmidi_input_params_t * params)
{
- snd_rawmidi_t *rmidi;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_INPUT_PARAMS, params ) < 0 )
- return -errno;
- return 0;
+ snd_rawmidi_t *rmidi;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_INPUT_PARAMS, params) < 0)
+ return -errno;
+ return 0;
}
-int snd_rawmidi_output_status( void *handle, snd_rawmidi_output_status_t *status )
+int snd_rawmidi_output_status(void *handle, snd_rawmidi_output_status_t * status)
{
- snd_rawmidi_t *rmidi;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_OUTPUT_STATUS, status ) < 0 )
- return -errno;
- return 0;
+ snd_rawmidi_t *rmidi;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_OUTPUT_STATUS, status) < 0)
+ return -errno;
+ return 0;
}
-int snd_rawmidi_input_status( void *handle, snd_rawmidi_input_status_t *status )
+int snd_rawmidi_input_status(void *handle, snd_rawmidi_input_status_t * status)
{
- snd_rawmidi_t *rmidi;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_INPUT_STATUS, status ) < 0 )
- return -errno;
- return 0;
+ snd_rawmidi_t *rmidi;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_INPUT_STATUS, status) < 0)
+ return -errno;
+ return 0;
}
-int snd_rawmidi_drain_output( void *handle )
+int snd_rawmidi_drain_output(void *handle)
{
- snd_rawmidi_t *rmidi;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_DRAIN_OUTPUT ) < 0 )
- return -errno;
- return 0;
+ snd_rawmidi_t *rmidi;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_DRAIN_OUTPUT) < 0)
+ return -errno;
+ return 0;
}
-int snd_rawmidi_flush_output( void *handle )
+int snd_rawmidi_flush_output(void *handle)
{
- snd_rawmidi_t *rmidi;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_FLUSH_OUTPUT ) < 0 )
- return -errno;
- return 0;
+ snd_rawmidi_t *rmidi;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_FLUSH_OUTPUT) < 0)
+ return -errno;
+ return 0;
}
-int snd_rawmidi_flush_input( void *handle )
+int snd_rawmidi_flush_input(void *handle)
{
- snd_rawmidi_t *rmidi;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- if ( ioctl( rmidi -> fd, SND_RAWMIDI_IOCTL_FLUSH_INPUT ) < 0 )
- return -errno;
- return 0;
+ snd_rawmidi_t *rmidi;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ if (ioctl(rmidi->fd, SND_RAWMIDI_IOCTL_FLUSH_INPUT) < 0)
+ return -errno;
+ return 0;
}
-ssize_t snd_rawmidi_write( void *handle, const void *buffer, size_t size )
+ssize_t snd_rawmidi_write(void *handle, const void *buffer, size_t size)
{
- snd_rawmidi_t *rmidi;
- ssize_t result;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- result = write( rmidi -> fd, buffer, size );
- if ( result < 0 ) return -errno;
- return result;
+ snd_rawmidi_t *rmidi;
+ ssize_t result;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ result = write(rmidi->fd, buffer, size);
+ if (result < 0)
+ return -errno;
+ return result;
}
-ssize_t snd_rawmidi_read( void *handle, void *buffer, size_t size )
+ssize_t snd_rawmidi_read(void *handle, void *buffer, size_t size)
{
- snd_rawmidi_t *rmidi;
- ssize_t result;
-
- rmidi = (snd_rawmidi_t *)handle;
- if ( !rmidi ) return -EINVAL;
- result = read( rmidi -> fd, buffer, size );
- if ( result < 0 ) return -errno;
- return result;
+ snd_rawmidi_t *rmidi;
+ ssize_t result;
+
+ rmidi = (snd_rawmidi_t *) handle;
+ if (!rmidi)
+ return -EINVAL;
+ result = read(rmidi->fd, buffer, size);
+ if (result < 0)
+ return -errno;
+ return result;
}
git://git.alsa-project.org / alsa-lib.git / commitdiff