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#include <stdio.h>
#include <string.h>
#include "../include/asoundlib.h"
const char *get_type( unsigned int type )
{
switch ( type ) {
case 0: return "Boolean";
case 1: return "Byte";
case 2: return "Word";
case 3: return "DWord";
case 4: return "User";
default:
return "Unknown";
}
}
void main( void )
{
int cards, card, device, direction, idx, count, err;
void *handle, *chandle;
struct snd_ctl_hw_info info;
struct snd_ctl_switch ctl_switch;
snd_mixer_switch_t mixer_switch;
snd_pcm_info_t pcm_info;
snd_pcm_switch_t pcm_switch;
snd_rawmidi_switch_t rmidi_switch;
snd_rawmidi_info_t rmidi_info;
cards = snd_cards();
printf( "Detected %i soundcard%s...\n", cards, cards > 1 ? "s" : "" );
if ( cards <= 0 ) {
printf( "Giving up...\n" );
return;
}
/* control interface */
for ( card = 0; card < cards; card++ ) {
if ( (err = snd_ctl_open( &handle, card )) < 0 ) {
printf( "CTL open error: %s\n", snd_strerror( err ) );
continue;
}
if ( (err = snd_ctl_hw_info( handle, &info )) < 0 ) {
printf( "CTL hw info error: %s\n", snd_strerror( err ) );
continue;
}
if ( (count = snd_ctl_switches( handle )) < 0 ) {
printf( "CTL switches error: %s\n", snd_strerror( count ) );
continue;
}
for ( idx = 0; idx < count; idx++ ) {
if ( (err = snd_ctl_switch_read( handle, idx, &ctl_switch )) < 0 ) {
printf( "CTL switch read error: %s\n", snd_strerror( count ) );
continue;
}
printf( "CTL switch: '%s' %s (%i-%i)\n", ctl_switch.name, get_type( ctl_switch.type ), ctl_switch.low, ctl_switch.high );
if ( (err = snd_ctl_switch_write( handle, idx, &ctl_switch )) < 0 ) {
printf( "CTL switch write error: %s\n", snd_strerror( count ) );
continue;
}
}
if ( count <= 0 )
printf( "No CTL switches detected for soundcard #%i '%s'...\n", idx, info.name );
snd_ctl_close( handle );
}
/* mixer interface */
for ( card = 0; card < cards; card++ ) {
if ( (err = snd_ctl_open( &handle, card )) < 0 ) {
printf( "CTL open error: %s\n", snd_strerror( err ) );
continue;
}
if ( (err = snd_ctl_hw_info( handle, &info )) < 0 ) {
printf( "CTL hw info error: %s\n", snd_strerror( err ) );
continue;
}
snd_ctl_close( handle );
for ( device = 0; device < info.mixerdevs; device++ ) {
if ( (err = snd_mixer_open( &handle, card, device )) < 0 ) {
printf( "Mixer open error: %s\n", snd_strerror( err ) );
continue;
}
if ( (count = snd_mixer_switches( handle )) < 0 ) {
printf( "Mixer switches error: %s\n", snd_strerror( count ) );
continue;
}
for ( idx = 0; idx < count; idx++ ) {
if ( (err = snd_mixer_switch_read( handle, idx, &mixer_switch )) < 0 ) {
printf( "Mixer switch read error: %s\n", snd_strerror( count ) );
continue;
}
printf( "Mixer switch: '%s' %s (%i-%i)\n", mixer_switch.name, get_type( mixer_switch.type ), mixer_switch.low, mixer_switch.high );
if ( (err = snd_mixer_switch_write( handle, idx, &mixer_switch )) < 0 ) {
printf( "Mixer switch write error: %s\n", snd_strerror( count ) );
continue;
}
}
if ( count <= 0 )
printf( "No mixer switches detected for soundcard #%i '%s'...\n", idx, info.name );
snd_mixer_close( handle );
}
}
/* pcm switches */
for ( card = 0; card < cards; card++ ) {
if ( (err = snd_ctl_open( &chandle, card )) < 0 ) {
printf( "CTL open error: %s\n", snd_strerror( err ) );
continue;
}
if ( (err = snd_ctl_hw_info( chandle, &info )) < 0 ) {
printf( "CTL hw info error: %s\n", snd_strerror( err ) );
continue;
}
for ( device = 0; device < info.pcmdevs; device++ ) {
if ( (err = snd_ctl_pcm_info( chandle, device, &pcm_info )) < 0 ) {
printf( "CTL PCM info error: %s\n", snd_strerror( err ) );
continue;
}
for ( direction = 0; direction < 2; direction++ ) {
int (*switches)( void *handle );
int (*switch_read)( void *handle, int switchn, snd_pcm_switch_t *data );
int (*switch_write)( void *handle, int switchn, snd_pcm_switch_t *data );
char *str;
if ( !(pcm_info.flags & (!direction ? SND_PCM_INFO_PLAYBACK : SND_PCM_INFO_RECORD)) ) continue;
if ( (err = snd_pcm_open( &handle, card, device, !direction ? SND_PCM_OPEN_PLAYBACK : SND_PCM_OPEN_RECORD )) < 0 ) {
printf( "PCM open error: %s\n", snd_strerror( err ) );
continue;
}
if ( !direction ) {
switches = snd_pcm_playback_switches;
switch_read = snd_pcm_playback_switch_read;
switch_write = snd_pcm_playback_switch_write;
str = "playback";
} else {
switches = snd_pcm_record_switches;
switch_read = snd_pcm_record_switch_read;
switch_write = snd_pcm_record_switch_write;
str = "record";
}
if ( (count = switches( handle )) < 0 ) {
printf( "PCM %s switches error: %s\n", str, snd_strerror( count ) );
continue;
}
for ( idx = 0; idx < count; idx++ ) {
if ( (err = switch_read( handle, idx, &pcm_switch )) < 0 ) {
printf( "PCM %s switch read error: %s\n", str, snd_strerror( count ) );
continue;
}
printf( "PCM switch: '%s' %s (%i-%i)\n", pcm_switch.name, get_type( pcm_switch.type ), pcm_switch.low, pcm_switch.high );
if ( (err = switch_write( handle, idx, &pcm_switch )) < 0 ) {
printf( "PCM %s switch write error: %s\n", str, snd_strerror( count ) );
continue;
}
}
if ( count <= 0 )
printf( "No PCM %s switches detected for soundcard #%i/#%i '%s'/'%s'...\n", str, idx, device, info.name, pcm_info.name );
snd_pcm_close( handle );
}
}
snd_ctl_close( chandle );
}
/* rawmidi switches */
for ( card = 0; card < cards; card++ ) {
if ( (err = snd_ctl_open( &chandle, card )) < 0 ) {
printf( "CTL open error: %s\n", snd_strerror( err ) );
continue;
}
if ( (err = snd_ctl_hw_info( chandle, &info )) < 0 ) {
printf( "CTL hw info error: %s\n", snd_strerror( err ) );
continue;
}
for ( device = 0; device < info.mididevs; device++ ) {
if ( (err = snd_ctl_rawmidi_info( chandle, device, &rmidi_info )) < 0 ) {
printf( "CTL RawMIDI info error: %s\n", snd_strerror( err ) );
continue;
}
for ( direction = 0; direction < 2; direction++ ) {
int (*switches)( void *handle );
int (*switch_read)( void *handle, int switchn, snd_rawmidi_switch_t *data );
int (*switch_write)( void *handle, int switchn, snd_rawmidi_switch_t *data );
char *str;
if ( !(pcm_info.flags & (!direction ? SND_RAWMIDI_INFO_OUTPUT : SND_RAWMIDI_INFO_INPUT)) ) continue;
if ( (err = snd_rawmidi_open( &handle, card, device, !direction ? SND_RAWMIDI_OPEN_OUTPUT : SND_RAWMIDI_OPEN_INPUT )) < 0 ) {
printf( "RawMIDI CTL open error: %s\n", snd_strerror( err ) );
continue;
}
if ( !direction ) {
switches = snd_rawmidi_output_switches;
switch_read = snd_rawmidi_output_switch_read;
switch_write = snd_rawmidi_output_switch_write;
str = "output";
} else {
switches = snd_rawmidi_input_switches;
switch_read = snd_rawmidi_input_switch_read;
switch_write = snd_rawmidi_input_switch_write;
str = "input";
}
if ( (count = switches( handle )) < 0 ) {
printf( "RawMIDI %s switches error: %s\n", str, snd_strerror( count ) );
continue;
}
for ( idx = 0; idx < count; idx++ ) {
if ( (err = switch_read( handle, idx, &rmidi_switch )) < 0 ) {
printf( "RawMIDI %s switch read error: %s\n", str, snd_strerror( count ) );
continue;
}
printf( "RawMIDI switch: '%s' %s (%i-%i)\n", rmidi_switch.name, get_type( rmidi_switch.type ), rmidi_switch.low, rmidi_switch.high );
if ( (err = switch_write( handle, idx, &rmidi_switch )) < 0 ) {
printf( "RawMIDI %s switch write error: %s\n", str, snd_strerror( count ) );
continue;
}
}
if ( count <= 0 )
printf( "No RawMIDI %s switches detected for soundcard #%i/#%i '%s'/'%s'...\n", str, idx, device, info.name, rmidi_info.name );
snd_rawmidi_close( handle );
}
}
snd_ctl_close( chandle );
}
}
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