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Updated switches interfaces.

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This commit is contained in:
Jaroslav Kysela 1998-08-28 14:04:48 +00:00
parent 2de9a582aa
commit e3aad51c38
10 changed files with 394 additions and 30 deletions
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75
src/pcm/pcm.c
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@ -137,19 +137,19 @@ int snd_pcm_record_info( void *handle, snd_pcm_record_info_t *info )
return 0;
}
int snd_pcm_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_SWITCHES, &result ) < 0 )
if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PSWITCHES, &result ) < 0 )
return -errno;
return result;
}
int snd_pcm_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;
@ -159,10 +159,10 @@ int snd_pcm_switch( void *handle, const char *switch_id )
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_mixer_switches( handle )) < 0 )
if ( (switches = snd_pcm_playback_switches( handle )) < 0 )
return switches;
for ( idx = 0; idx < switches; idx++ ) {
if ( (err = snd_pcm_switch_read( handle, idx, &uswitch )) < 0 )
if ( (err = snd_pcm_playback_switch_read( handle, idx, &uswitch )) < 0 )
return err;
if ( !strncmp( switch_id, uswitch.name, sizeof( uswitch.name ) ) )
return idx;
@ -170,26 +170,83 @@ int snd_pcm_switch( void *handle, const char *switch_id )
return -EINVAL;
}
int snd_pcm_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_SWITCH_READ, data ) < 0 )
if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PSWITCH_READ, data ) < 0 )
return -errno;
return 0;
}
int snd_pcm_switch_write( void *handle, int switchn, snd_pcm_switch_t *data )
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_SWITCH_WRITE, data ) < 0 )
if ( ioctl( pcm -> fd, SND_PCM_IOCTL_PSWITCH_WRITE, data ) < 0 )
return -errno;
return 0;
}
int snd_pcm_record_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_RSWITCHES, &result ) < 0 )
return -errno;
return result;
}
int snd_pcm_record_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_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_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_RSWITCH_READ, 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;
}