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alsa-utils/alsactl/setup.c
Jaroslav Kysela 350e1007e3 Fixes...
1998-11-11 20:16:06 +00:00

827 lines
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/*
* Advanced Linux Sound Architecture Control Program
* Copyright (c) 1997 by Perex, APS, University of South Bohemia
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "alsactl.h"
#define SND_INTERFACE_CONTROL 0
#define SND_INTERFACE_MIXER 1
#define SND_INTERFACE_PCM 2
#define SND_INTERFACE_RAWMIDI 3
extern int yyparse( void );
extern int linecount;
extern FILE *yyin;
extern int yydebug;
struct soundcard *soundcards = NULL;
/*
* free functions
*/
static void soundcard_ctl_switch_free( struct ctl_switch *first )
{
struct ctl_switch *next;
while ( first ) {
next = first -> next;
free( first );
first = next;
}
}
static void soundcard_mixer_channel_free( struct mixer_channel *first )
{
struct mixer_channel *next;
while ( first ) {
next = first -> next;
free( first );
first = next;
}
}
static void soundcard_mixer_switch_free( struct mixer_switch *first )
{
struct mixer_switch *next;
while ( first ) {
next = first -> next;
free( first );
first = next;
}
}
static void soundcard_mixer_free1( struct mixer *mixer )
{
if ( !mixer ) return;
soundcard_mixer_channel_free( mixer -> channels );
soundcard_mixer_switch_free( mixer -> switches );
free( mixer );
}
static void soundcard_mixer_free( struct mixer *first )
{
struct mixer *next;
while ( first ) {
next = first -> next;
soundcard_mixer_free1( first );
first = next;
}
}
static void soundcard_pcm_switch_free( struct pcm_switch *first )
{
struct pcm_switch *next;
while ( first ) {
next = first -> next;
free( first );
first = next;
}
}
static void soundcard_pcm_free1( struct pcm *pcm )
{
if ( !pcm ) return;
soundcard_pcm_switch_free( pcm -> pswitches );
soundcard_pcm_switch_free( pcm -> rswitches );
free( pcm );
}
static void soundcard_pcm_free( struct pcm *first )
{
struct pcm *next;
while ( first ) {
next = first -> next;
soundcard_pcm_free1( first );
first = next;
}
}
static void soundcard_rawmidi_switch_free( struct rawmidi_switch *first )
{
struct rawmidi_switch *next;
while ( first ) {
next = first -> next;
free( first );
first = next;
}
}
static void soundcard_rawmidi_free1( struct rawmidi *rawmidi )
{
if ( !rawmidi ) return;
soundcard_rawmidi_switch_free( rawmidi -> iswitches );
soundcard_rawmidi_switch_free( rawmidi -> oswitches );
free( rawmidi );
}
static void soundcard_rawmidi_free( struct rawmidi *first )
{
struct rawmidi *next;
while ( first ) {
next = first -> next;
soundcard_rawmidi_free1( first );
first = next;
}
}
static void soundcard_free1( struct soundcard *soundcard )
{
if ( !soundcard ) return;
soundcard_ctl_switch_free( soundcard -> control.switches );
soundcard_mixer_free( soundcard -> mixers );
soundcard_pcm_free( soundcard -> pcms );
soundcard_rawmidi_free( soundcard -> rawmidis );
free( soundcard );
}
static void soundcard_free( struct soundcard *first )
{
struct soundcard *next;
while ( first ) {
next = first -> next;
soundcard_free1( first );
first = next;
}
}
static int soundcard_remove( int cardno )
{
struct soundcard *first, *prev = NULL, *next;
first = soundcards;
while ( first ) {
next = first -> next;
if ( first -> no == cardno ) {
soundcard_free1( first );
if ( !prev ) soundcards = next; else prev -> next = next;
return 0;
}
prev = first;
first = first -> next;
}
return -1;
}
/*
* exported functions
*/
void soundcard_setup_init( void )
{
soundcards = NULL;
}
void soundcard_setup_done( void )
{
soundcard_free( soundcards ); soundcards = NULL;
}
int soundcard_setup_collect( int cardno )
{
void *handle, *mhandle;
struct soundcard *card, *first, *prev;
int err, idx, count, device;
struct ctl_switch *ctl, *ctlprev;
struct mixer *mixer, *mixerprev;
struct mixer_switch *mixsw, *mixswprev;
struct mixer_channel *mixerchannel, *mixerchannelprev;
struct pcm *pcm, *pcmprev;
struct pcm_switch *pcmsw, *pcmswprev;
struct rawmidi *rawmidi, *rawmidiprev;
struct rawmidi_switch *rawmidisw, *rawmidiswprev;
soundcard_remove( cardno );
if ( (err = snd_ctl_open( &handle, cardno )) < 0 ) {
error( "SND CTL open error: %s", snd_strerror( err ) );
return 1;
}
/* --- */
card = (struct soundcard *)malloc( sizeof( struct soundcard ) );
if ( !card ) {
snd_ctl_close( handle );
error( "malloc error" );
return 1;
}
bzero( card, sizeof( struct soundcard ) );
card -> no = cardno;
for ( first = soundcards, prev = NULL; first; first = first -> next ) {
if ( first -> no > cardno ) {
if ( !prev ) {
soundcards = card;
} else {
prev -> next = card;
}
card -> next = first;
break;
}
prev = first;
}
if ( !first ) {
if ( !soundcards ) {
soundcards = card;
} else {
prev -> next = card;
}
}
if ( (err = snd_ctl_hw_info( handle, &card -> control.hwinfo )) < 0 ) {
snd_ctl_close( handle );
error( "SND CTL HW INFO error: %s", snd_strerror( err ) );
return 1;
}
/* --- */
count = snd_ctl_switches( handle );
for ( idx = 0, ctlprev = NULL; idx < count; idx++ ) {
ctl = (struct ctl_switch *)malloc( sizeof( struct ctl_switch ) );
if ( !ctl ) {
snd_ctl_close( handle );
error( "malloc error" );
return 1;
}
bzero( ctl, sizeof( struct ctl_switch ) );
ctl -> no = idx;
if ( (err = snd_ctl_switch_read( handle, idx, &ctl -> s )) < 0 ) {
free( ctl );
snd_ctl_close( handle );
error( "CTL switch read error (%s) - skipping" );
break;
}
if ( !ctlprev ) {
card -> control.switches = ctl;
} else {
ctlprev -> next = ctl;
}
ctlprev = ctl;
}
/* --- */
for ( device = 0, mixerprev = NULL; device < card -> control.hwinfo.mixerdevs; device++ ) {
mixer = (struct mixer *)malloc( sizeof( struct mixer ) );
if ( !mixer ) {
snd_ctl_close( handle );
error( "malloc problem" );
return 1;
}
bzero( mixer, sizeof( struct mixer ) );
mixer -> no = device;
count = snd_ctl_mixer_switches( handle, device );
for ( idx = 0, mixswprev = NULL; idx < count; idx++ ) {
mixsw = (struct mixer_switch *)malloc( sizeof( struct mixer_switch ) );
if ( !mixsw ) {
snd_ctl_close( handle );
error( "malloc error" );
return 1;
}
bzero( mixsw, sizeof( struct mixer_switch ) );
mixsw -> no = idx;
if ( (err = snd_ctl_mixer_switch_read( handle, device, idx, &mixsw -> s )) < 0 ) {
free( mixsw );
error( "MIXER switch read error (%s) - skipping", snd_strerror( err ) );
break;
}
if ( !mixswprev ) {
mixer -> switches = mixsw;
} else {
mixswprev -> next = mixsw;
}
mixswprev = mixsw;
}
if ( !mixerprev ) {
card -> mixers = mixer;
} else {
mixerprev -> next = mixer;
}
mixerprev = mixer;
if ( (err = snd_mixer_open( &mhandle, cardno, device )) < 0 ) {
snd_ctl_close( handle );
error( "MIXER open error: %s\n", snd_strerror( err ) );
return 1;
}
if ( (err = snd_mixer_exact_mode( mhandle, 1 )) < 0 ) {
snd_mixer_close( mhandle );
snd_ctl_close( handle );
error( "MIXER exact mode error: %s\n", snd_strerror( err ) );
return 1;
}
if ( (err = snd_mixer_info( mhandle, &mixer -> info )) < 0 ) {
snd_mixer_close( mhandle );
snd_ctl_close( handle );
error( "MIXER info error: %s\n", snd_strerror( err ) );
return 1;
}
count = snd_mixer_channels( mhandle );
for ( idx = 0, mixerchannelprev = NULL; idx < count; idx++ ) {
mixerchannel = (struct mixer_channel *)malloc( sizeof( struct mixer_channel ) );
if ( !mixerchannel ) {
snd_mixer_close( mhandle );
snd_ctl_close( handle );
error( "malloc problem" );
return 1;
}
bzero( mixerchannel, sizeof( struct mixer_channel ) );
mixerchannel -> no = idx;
if ( (err = snd_mixer_channel_info( mhandle, idx, &mixerchannel -> i )) < 0 ) {
free( mixerchannel );
error( "MIXER channel info error (%s) - skipping", snd_strerror( err ) );
break;
}
if ( (err = snd_mixer_channel_read( mhandle, idx, &mixerchannel -> c )) < 0 ) {
free( mixerchannel );
error( "MIXER channel read error (%s) - skipping", snd_strerror( err ) );
break;
}
if ( !mixerchannelprev ) {
mixer -> channels = mixerchannel;
} else {
mixerchannelprev -> next = mixerchannel;
}
mixerchannelprev = mixerchannel;
}
snd_mixer_close( mhandle );
}
/* --- */
for ( device = 0, pcmprev = NULL; device < card -> control.hwinfo.pcmdevs; device++ ) {
pcm = (struct pcm *)malloc( sizeof( struct pcm ) );
if ( !pcm ) {
snd_ctl_close( handle );
error( "malloc problem" );
return 1;
}
bzero( pcm, sizeof( struct pcm ) );
pcm -> no = device;
if ( (err = snd_ctl_pcm_info( handle, device, &pcm -> info )) < 0 ) {
snd_ctl_close( handle );
error( "PCM info error: %s\n", snd_strerror( err ) );
return 1;
}
count = snd_ctl_pcm_playback_switches( handle, device );
for ( idx = 0, pcmswprev = NULL; idx < count; idx++ ) {
pcmsw = (struct pcm_switch *)malloc( sizeof( struct pcm_switch ) );
if ( !pcmsw ) {
snd_ctl_close( handle );
error( "malloc error" );
return 1;
}
bzero( pcmsw, sizeof( struct mixer_switch ) );
pcmsw -> no = idx;
if ( (err = snd_ctl_pcm_playback_switch_read( handle, device, idx, &pcmsw -> s )) < 0 ) {
free( pcmsw );
error( "PCM playback switch read error (%s) - skipping", snd_strerror( err ) );
break;
}
if ( !pcmswprev ) {
pcm -> pswitches = pcmsw;
} else {
pcmswprev -> next = pcmsw;
}
pcmswprev = pcmsw;
}
count = snd_ctl_pcm_record_switches( handle, device );
for ( idx = 0, pcmswprev = NULL; idx < count; idx++ ) {
pcmsw = (struct pcm_switch *)malloc( sizeof( struct pcm_switch ) );
if ( !pcmsw ) {
snd_ctl_close( handle );
error( "malloc error" );
return 1;
}
bzero( pcmsw, sizeof( struct mixer_switch ) );
pcmsw -> no = idx;
if ( (err = snd_ctl_pcm_record_switch_read( handle, device, idx, &pcmsw -> s )) < 0 ) {
free( pcmsw );
error( "PCM record switch read error (%s) - skipping", snd_strerror( err ) );
break;
}
if ( !pcmswprev ) {
pcm -> rswitches = pcmsw;
} else {
pcmswprev -> next = pcmsw;
}
pcmswprev = pcmsw;
}
if ( !pcmprev ) {
card -> pcms = pcm;
} else {
pcmprev -> next = pcm;
}
pcmprev = pcm;
}
/* --- */
for ( device = 0, rawmidiprev = NULL; device < card -> control.hwinfo.mididevs; device++ ) {
rawmidi = (struct rawmidi *)malloc( sizeof( struct rawmidi ) );
if ( !rawmidi ) {
snd_ctl_close( handle );
error( "malloc problem" );
return 1;
}
bzero( rawmidi, sizeof( struct rawmidi ) );
rawmidi -> no = device;
if ( (err = snd_ctl_rawmidi_info( handle, device, &rawmidi -> info )) < 0 ) {
snd_ctl_close( handle );
error( "RAWMIDI info error: %s\n", snd_strerror( err ) );
return 1;
}
count = snd_ctl_rawmidi_input_switches( handle, device );
for ( idx = 0, rawmidiswprev = NULL; idx < count; idx++ ) {
rawmidisw = (struct rawmidi_switch *)malloc( sizeof( struct rawmidi_switch ) );
if ( !rawmidisw ) {
snd_ctl_close( handle );
error( "malloc error" );
return 1;
}
bzero( rawmidisw, sizeof( struct rawmidi_switch ) );
rawmidisw -> no = idx;
if ( (err = snd_ctl_rawmidi_input_switch_read( handle, device, idx, &rawmidisw -> s )) < 0 ) {
free( rawmidisw );
error( "RAWMIDI input switch read error (%s) - skipping", snd_strerror( err ) );
break;
}
if ( !rawmidiswprev ) {
rawmidi -> iswitches = rawmidisw;
} else {
rawmidiswprev -> next = rawmidisw;
}
rawmidiswprev = rawmidisw;
}
count = snd_ctl_rawmidi_output_switches( handle, device );
for ( idx = 0, rawmidiswprev = NULL; idx < count; idx++ ) {
rawmidisw = (struct rawmidi_switch *)malloc( sizeof( struct rawmidi_switch ) );
if ( !rawmidisw ) {
snd_ctl_close( handle );
error( "malloc error" );
return 1;
}
bzero( rawmidisw, sizeof( struct rawmidi_switch ) );
rawmidisw -> no = idx;
if ( (err = snd_ctl_rawmidi_output_switch_read( handle, device, idx, &rawmidisw -> s )) < 0 ) {
free( rawmidisw );
error( "RAWMIDI output switch read error (%s) - skipping", snd_strerror( err ) );
break;
}
if ( !rawmidiswprev ) {
rawmidi -> oswitches = rawmidisw;
} else {
rawmidiswprev -> next = rawmidisw;
}
rawmidiswprev = rawmidisw;
}
if ( !rawmidiprev ) {
card -> rawmidis = rawmidi;
} else {
rawmidiprev -> next = rawmidi;
}
rawmidiprev = rawmidi;
}
/* --- */
snd_ctl_close( handle );
return 0;
}
int soundcard_setup_load( const char *cfgfile )
{
extern int yyparse( void );
extern int linecount;
extern FILE *yyin;
extern int yydebug;
int xtry;
#ifdef YYDEBUG
yydebug = 1;
#endif
if ( debugflag )
printf( "cfgfile = '%s'\n", cfgfile );
if ( ( yyin = fopen( cfgfile, "r" ) ) == NULL ) {
error( "Cannot open configuration file '%s'...", cfgfile );
return 1;
}
linecount = 0;
xtry = yyparse();
fclose( yyin );
if ( debugflag )
printf( "Config ok..\n" );
if ( xtry )
error( "Ignored error in configuration file '%s'...", cfgfile );
return 0;
}
static void soundcard_setup_write_switch( FILE *out, int interface, const unsigned char *name, unsigned int type, unsigned int low, unsigned int high, void *data )
{
union {
unsigned int enable;
unsigned char data8[32];
unsigned short data16[16];
unsigned int data32[8];
} *pdata = data;
char *s, v[16];
int idx, first, switchok = 0;
const char *space = " ";
v[0] = '\0';
switch ( type ) {
case SND_CTL_SW_TYPE_BOOLEAN: s = "bool"; strcpy( v, pdata -> enable ? "true" : "false" ); break;
case SND_CTL_SW_TYPE_BYTE: s = "byte"; sprintf( v, "%u", (unsigned int)pdata -> data8[0] ); break;
case SND_CTL_SW_TYPE_WORD: s = "word"; sprintf( v, "%u", (unsigned int)pdata -> data16[0] ); break;
case SND_CTL_SW_TYPE_DWORD: s = "dword"; sprintf( v, "%u", pdata -> data32[0] ); break;
case SND_CTL_SW_TYPE_USER: s = "user"; break;
default:
s = "unknown";
}
fprintf( out, "%s; Type is '%s'.\n", space, s );
if ( low != 0 || high != 0 )
fprintf( out, "%s; Accepted switch range is from %u to %u.\n", space, low, high );
if ( interface == SND_INTERFACE_CONTROL && type == SND_CTL_SW_TYPE_WORD &&
!strcmp( name, SND_CTL_SW_JOYSTICK_ADDRESS ) ) {
for ( idx = 1, first = 1; idx < 16; idx++ ) {
if ( pdata -> data16[idx] ) {
if ( first ) {
fprintf( out, "%s; Available addresses - 0x%x", space, pdata -> data16[idx] );
first = 0;
} else {
fprintf( out, ", 0x%x", pdata -> data16[idx] );
}
}
}
if ( !first ) fprintf( out, "\n" );
}
if ( interface == SND_INTERFACE_MIXER && type == SND_MIXER_SW_TYPE_BOOLEAN &&
!strcmp( name, SND_MIXER_SW_IEC958OUT ) ) {
fprintf( out, "%sswitch( \"%s\", ", space, name );
if ( pdata -> data32[1] == (('C'<<8)|'S') ) { /* Cirrus Crystal */
switchok = 0;
fprintf( out, "iec958ocs( %s", pdata -> enable ? "enable" : "disable" );
if ( pdata -> data16[4] & 0x2000 ) fprintf( out, " 3d" );
if ( pdata -> data16[4] & 0x0040 ) fprintf( out, " reset" );
if ( pdata -> data16[4] & 0x0020 ) fprintf( out, " user" );
if ( pdata -> data16[4] & 0x0010 ) fprintf( out, " valid" );
if ( pdata -> data16[5] & 0x0002 ) fprintf( out, " data" );
if ( !(pdata -> data16[5] & 0x0004) ) fprintf( out, " protected" );
switch ( pdata -> data16[5] & 0x0018 ) {
case 0x0008: fprintf( out, " pre2" ); break;
default: break;
}
if ( pdata -> data16[5] & 0x0020 ) fprintf( out, " fslock" );
fprintf( out, " type( 0x%x )", (pdata -> data16[5] >> 6) & 0x7f );
if ( pdata -> data16[5] & 0x2000 ) fprintf( out, " gstatus" );
fprintf( out, " )" );
goto __end;
}
}
fprintf( out, "%sswitch( \"%s\", ", space, name );
if ( !switchok ) {
fprintf( out, v );
if ( type < 0 || type > SND_CTL_SW_TYPE_DWORD ) {
/* TODO: some well known types should be verbose */
fprintf( out, " rawdata( " );
for ( idx = 0; idx < 31; idx++ ) {
fprintf( out, "@%02x:", pdata -> data8[idx] );
}
fprintf( out, "%02x@ )\n", pdata -> data8[31] );
}
}
__end:
fprintf( out, " )\n" );
}
static void soundcard_setup_write_mixer_channel( FILE *out, snd_mixer_channel_info_t *info, snd_mixer_channel_t *channel )
{
fprintf( out, " ; Capabilities:%s%s%s%s%s%s%s%s%s%s%s%s%s.\n",
info -> caps & SND_MIXER_CINFO_CAP_RECORD ? " record" : "",
info -> caps & SND_MIXER_CINFO_CAP_JOINRECORD ? " join-record" : "",
info -> caps & SND_MIXER_CINFO_CAP_STEREO ? " stereo" : "",
info -> caps & SND_MIXER_CINFO_CAP_HWMUTE ? " hardware-mute" : "",
info -> caps & SND_MIXER_CINFO_CAP_JOINMUTE ? " join-mute" : "",
info -> caps & SND_MIXER_CINFO_CAP_DIGITAL ? " digital" : "",
info -> caps & SND_MIXER_CINFO_CAP_INPUT ? " external-input" : "",
info -> caps & SND_MIXER_CINFO_CAP_LTOR_OUT ? " ltor-out" : "",
info -> caps & SND_MIXER_CINFO_CAP_RTOL_OUT ? " rtol-out" : "",
info -> caps & SND_MIXER_CINFO_CAP_SWITCH_OUT ? " switch-out" : "",
info -> caps & SND_MIXER_CINFO_CAP_LTOR_IN ? " ltor-in" : "",
info -> caps & SND_MIXER_CINFO_CAP_RTOL_IN ? " rtol-in" : "",
info -> caps & SND_MIXER_CINFO_CAP_RECORDBYMUTE ? " record-by-mute" : "" );
fprintf( out, " ; Accepted channel range is from %i to %i.\n", info -> min, info -> max );
fprintf( out, " channel( \"%s\", ", info -> name );
if ( info -> caps & SND_MIXER_CINFO_CAP_STEREO ) {
fprintf( out, "stereo( %i%s%s%s%s, %i%s%s%s%s )",
channel -> left,
channel -> flags & SND_MIXER_FLG_MUTE_LEFT ? " mute" : "",
channel -> flags & SND_MIXER_FLG_RECORD_LEFT ? " record" : "",
channel -> flags & SND_MIXER_FLG_LTOR_OUT ? " swout" : "",
channel -> flags & SND_MIXER_FLG_LTOR_IN ? " swin" : "",
channel -> right,
channel -> flags & SND_MIXER_FLG_MUTE_RIGHT ? " mute" : "",
channel -> flags & SND_MIXER_FLG_RECORD_RIGHT ? " record" : "",
channel -> flags & SND_MIXER_FLG_RTOL_OUT ? " swout" : "",
channel -> flags & SND_MIXER_FLG_RTOL_IN ? " swin" : ""
);
} else {
fprintf( out, "mono( %i%s%s )",
(channel -> left + channel -> right) / 2,
channel -> flags & SND_MIXER_FLG_MUTE ? " mute" : "",
channel -> flags & SND_MIXER_FLG_RECORD ? " record" : ""
);
}
fprintf( out, " )\n" );
}
int soundcard_setup_write( const char *cfgfile )
{
FILE *out;
struct soundcard *first;
struct ctl_switch *ctlsw;
struct mixer *mixer;
struct mixer_switch *mixersw;
struct mixer_channel *mixerchannel;
struct pcm *pcm;
struct pcm_switch *pcmsw;
struct rawmidi *rawmidi;
struct rawmidi_switch *rawmidisw;
if ( (out = fopen( cfgfile, "w+" )) == NULL ) {
error( "Cannot open file '%s' for writing...\n", cfgfile );
return 1;
}
fprintf( out, "# ALSA driver configuration\n" );
fprintf( out, "# Generated by alsactl\n" );
fprintf( out, "\n" );
for ( first = soundcards; first; first = first -> next ) {
fprintf( out, "soundcard( \"%s\" ) {\n", first -> control.hwinfo.id );
if ( first -> control.switches ) {
fprintf( out, " control {\n" );
for ( ctlsw = first -> control.switches; ctlsw; ctlsw = ctlsw -> next )
soundcard_setup_write_switch( out, SND_INTERFACE_CONTROL, ctlsw -> s.name, ctlsw -> s.type, ctlsw -> s.low, ctlsw -> s.high, (void *)&ctlsw -> s.value );
fprintf( out, " }\n" );
}
for ( mixer = first -> mixers; mixer; mixer = mixer -> next ) {
fprintf( out, " mixer( \"%s\" ) {\n", mixer -> info.name );
for ( mixerchannel = mixer -> channels; mixerchannel; mixerchannel = mixerchannel -> next )
soundcard_setup_write_mixer_channel( out, &mixerchannel -> i, &mixerchannel -> c );
for ( mixersw = mixer -> switches; mixersw; mixersw = mixersw -> next )
soundcard_setup_write_switch( out, SND_INTERFACE_MIXER, mixersw -> s.name, mixersw -> s.type, mixersw -> s.low, mixersw -> s.high, (void *)(&mixersw -> s.value) );
fprintf( out, " }\n" );
}
for ( pcm = first -> pcms; pcm; pcm = pcm -> next ) {
if ( !pcm -> pswitches && !pcm -> rswitches ) continue;
fprintf( out, " pcm( \"%s\" ) {\n", pcm -> info.name );
if ( pcm -> pswitches ) {
fprintf( out, " playback {" );
for ( pcmsw = pcm -> pswitches; pcmsw; pcmsw = pcmsw -> next )
soundcard_setup_write_switch( out, SND_INTERFACE_PCM, pcmsw -> s.name, pcmsw -> s.type, pcmsw -> s.low, pcmsw -> s.high, (void *)&pcmsw -> s.value );
fprintf( out, " }\n" );
}
if ( pcm -> rswitches ) {
fprintf( out, " record {" );
for ( pcmsw = pcm -> pswitches; pcmsw; pcmsw = pcmsw -> next )
soundcard_setup_write_switch( out, SND_INTERFACE_PCM, pcmsw -> s.name, pcmsw -> s.type, pcmsw -> s.low, pcmsw -> s.high, (void *)&pcmsw -> s.value );
fprintf( out, " }\n" );
}
fprintf( out, " }\n" );
}
for ( rawmidi = first -> rawmidis; rawmidi; rawmidi = rawmidi -> next ) {
if ( !rawmidi -> oswitches && !rawmidi -> iswitches ) continue;
fprintf( out, " rawmidi( \"%s\" ) {\n", rawmidi -> info.name );
if ( rawmidi -> oswitches ) {
fprintf( out, " output {" );
for ( rawmidisw = rawmidi -> oswitches; rawmidisw; rawmidisw = rawmidisw -> next )
soundcard_setup_write_switch( out, SND_INTERFACE_RAWMIDI, rawmidisw -> s.name, rawmidisw -> s.type, rawmidisw -> s.low, rawmidisw -> s.high, (void *)&rawmidisw -> s.value );
fprintf( out, " }\n" );
}
if ( rawmidi -> iswitches ) {
fprintf( out, " input {" );
for ( rawmidisw = rawmidi -> iswitches; rawmidisw; rawmidisw = rawmidisw -> next )
soundcard_setup_write_switch( out, SND_INTERFACE_RAWMIDI, rawmidisw -> s.name, rawmidisw -> s.type, rawmidisw -> s.low, rawmidisw -> s.high, (void *)&rawmidisw -> s.value );
fprintf( out, " }\n" );
}
fprintf( out, " }\n" );
}
fprintf( out, "}\n%s", first -> next ? "\n" : "" );
}
fclose( out );
return 0;
}
static int soundcard_open_ctl( void **ctlhandle, struct soundcard *soundcard )
{
int err;
if ( *ctlhandle ) return 0;
if ( (err = snd_ctl_open( ctlhandle, soundcard -> no )) < 0 ) {
error( "Cannot open control interface for soundcard #%i.", soundcard -> no + 1 );
return 1;
}
return 0;
}
static int soundcard_open_mix( void **mixhandle, struct soundcard *soundcard, struct mixer *mixer )
{
int err;
if ( *mixhandle ) return 0;
if ( (err = snd_mixer_open( mixhandle, soundcard -> no, mixer -> no )) < 0 ) {
error( "Cannot open mixer interface for soundcard #%i.", soundcard -> no + 1 );
return 1;
}
if ( (err = snd_mixer_exact_mode( *mixhandle, 1 )) < 0 ) {
error( "Cannot setup exact mode for mixer #%i/#%i: %s", soundcard -> no + 1, mixer -> no, snd_strerror( err ) );
return 1;
}
return 0;
}
int soundcard_setup_process( int cardno )
{
int err;
void *ctlhandle = NULL;
void *mixhandle = NULL;
struct soundcard *soundcard;
struct ctl_switch *ctlsw;
struct mixer *mixer;
struct mixer_channel *channel;
struct mixer_switch *mixersw;
struct pcm *pcm;
struct pcm_switch *pcmsw;
struct rawmidi *rawmidi;
struct rawmidi_switch *rawmidisw;
for ( soundcard = soundcards; soundcard; soundcard = soundcard -> next ) {
if ( cardno >= 0 && soundcard -> no != cardno ) continue;
for ( ctlsw = soundcard -> control.switches; ctlsw; ctlsw = ctlsw -> next ) {
if ( ctlsw -> change )
if ( !soundcard_open_ctl( &ctlhandle, soundcard ) ) {
if ( (err = snd_ctl_switch_write( ctlhandle, ctlsw -> no, &ctlsw -> s )) < 0 )
error( "Control switch '%s' write error: %s", ctlsw -> s.name, snd_strerror( err ) );
}
}
for ( mixer = soundcard -> mixers; mixer; mixer = mixer -> next ) {
for ( channel = mixer -> channels; channel; channel = channel -> next )
if ( channel -> change )
if ( !soundcard_open_mix( &mixhandle, soundcard, mixer ) ) {
if ( (err = snd_mixer_channel_write( mixhandle, channel -> no, &channel -> c )) < 0 )
error( "Mixer channel '%s' write error: %s", channel -> i.name, snd_strerror( err ) );
}
if ( mixhandle ) { snd_mixer_close( mixhandle ); mixhandle = NULL; }
for ( mixersw = mixer -> switches; mixersw; mixersw = mixersw -> next )
if ( mixersw -> change )
if ( !soundcard_open_ctl( &ctlhandle, soundcard ) ) {
if ( (err = snd_ctl_mixer_switch_write( ctlhandle, mixer -> no, mixersw -> no, &mixersw -> s )) < 0 )
error( "Mixer switch '%s' write error: %s", mixersw -> s.name, snd_strerror( err ) );
}
}
for ( pcm = soundcard -> pcms; pcm; pcm = pcm -> next ) {
for ( pcmsw = pcm -> pswitches; pcmsw; pcmsw = pcmsw -> next ) {
if ( pcmsw -> change )
if ( !soundcard_open_ctl( &ctlhandle, soundcard ) ) {
if ( (err = snd_ctl_pcm_playback_switch_write( ctlhandle, pcm -> no, pcmsw -> no, &pcmsw -> s )) < 0 )
error( "PCM playback switch '%s' write error: %s", pcmsw -> s.name, snd_strerror( err ) );
}
}
for ( pcmsw = pcm -> rswitches; pcmsw; pcmsw = pcmsw -> next ) {
if ( pcmsw -> change )
if ( !soundcard_open_ctl( &ctlhandle, soundcard ) ) {
if ( (err = snd_ctl_pcm_playback_switch_write( ctlhandle, pcm -> no, pcmsw -> no, &pcmsw -> s )) < 0 )
error( "PCM record switch '%s' write error: %s", pcmsw -> s.name, snd_strerror( err ) );
}
}
}
for ( rawmidi = soundcard -> rawmidis; rawmidi; rawmidi = rawmidi -> next ) {
for ( rawmidisw = rawmidi -> oswitches; rawmidisw; rawmidisw = rawmidisw -> next ) {
if ( rawmidisw -> change )
if ( !soundcard_open_ctl( &ctlhandle, soundcard ) ) {
if ( (err = snd_ctl_rawmidi_output_switch_write( ctlhandle, rawmidi -> no, rawmidisw -> no, &rawmidisw -> s )) < 0 )
error( "RAWMIDI output switch '%s' write error: %s", rawmidisw -> s.name, snd_strerror( err ) );
}
}
for ( rawmidisw = rawmidi -> iswitches; rawmidisw; rawmidisw = rawmidisw -> next ) {
if ( rawmidisw -> change )
if ( !soundcard_open_ctl( &ctlhandle, soundcard ) ) {
if ( (err = snd_ctl_rawmidi_output_switch_write( ctlhandle, rawmidi -> no, rawmidisw -> no, &rawmidisw -> s )) < 0 )
error( "RAWMIDI input switch '%s' write error: %s", rawmidisw -> s.name, snd_strerror( err ) );
}
}
}
}
if ( ctlhandle ) snd_ctl_close( ctlhandle );
return 1;
}
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