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ups, I missed'em.. 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@442 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
gabucino 2001-04-15 18:37:07 +00:00
parent 6ead487b06
commit 005b7e2844
2 changed files with 110 additions and 0 deletions
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91
mixer.c Normal file
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#include <string.h>
#include <sys/ioctl.h>
#include <sys/soundcard.h>
#include <fcntl.h>
#include <stdio.h>
#include "mixer.h"
#define DEV_MIXER "/dev/mixer"
char * mixer_device=NULL;
char * devname=NULL;
int mixer_usemaster=0;
void mixer_getvolume( int *l,int *r )
{
int fd,v,cmd,devs;
if ( !mixer_device ) devname=strdup( DEV_MIXER );
else devname=strdup( mixer_device );
fd=open( devname,O_RDONLY );
free( devname );
if ( fd != -1 )
{
ioctl( fd,SOUND_MIXER_READ_DEVMASK,&devs );
if ( ( devs & SOUND_MASK_PCM ) && ( mixer_usemaster==0 ) ) cmd=SOUND_MIXER_READ_PCM;
else
if ( ( devs & SOUND_MASK_VOLUME ) && ( mixer_usemaster==1 ) ) cmd=SOUND_MIXER_READ_VOLUME;
else
{
close( fd );
return;
}
ioctl( fd,cmd,&v );
*r=( v & 0xFF00 ) >> 8;
*l=( v & 0x00FF );
close( fd );
}
}
void mixer_setvolume( int l,int r )
{
int fd,v,cmd,devs;
if ( !mixer_device ) devname=strdup( DEV_MIXER );
else devname=strdup( mixer_device );
fd=open( devname,O_RDONLY );
free( devname );
if ( fd != -1 )
{
ioctl( fd,SOUND_MIXER_READ_DEVMASK,&devs );
if ( ( devs & SOUND_MASK_PCM ) && ( mixer_usemaster==0 ) ) cmd=SOUND_MIXER_WRITE_PCM;
else
if ( ( devs & SOUND_MASK_VOLUME ) && ( mixer_usemaster==1 ) ) cmd=SOUND_MIXER_WRITE_VOLUME;
else
{
close( fd );
return;
}
v=( r << 8 ) | l;
ioctl( fd,cmd,&v );
close( fd );
}
}
int mixer_l=0; int mixer_r=0;
void mixer_incvolume( void )
{
fprintf( stderr,"[mixer] inc.\n" );
mixer_getvolume( &mixer_l,&mixer_r );
if ( mixer_l < 100 ) mixer_l++;
if ( mixer_r < 100 ) mixer_r++;
mixer_setvolume( mixer_l,mixer_r );
}
void mixer_decvolume( void )
{
fprintf( stderr,"[mixer] dec.\n" );
mixer_getvolume( &mixer_l,&mixer_r );
if ( mixer_l > 0 ) mixer_l--;
if ( mixer_r > 0 ) mixer_r--;
mixer_setvolume( mixer_l,mixer_r );
}
int mixer_getbothvolume( void )
{
mixer_getvolume( &mixer_l,&mixer_r );
return ( mixer_l + mixer_r ) / 2;
}

19
mixer.h Normal file
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#ifndef __MPLAYER_MIXER
#define __MPLAYER_MIXER
#define DEV_MIXER "/dev/mixer"
extern int mixer_usemaster;
extern char * mixer_device;
extern void mixer_getvolume( int *l,int *r );
extern void mixer_setvolume( int l,int r );
extern void mixer_incvolume( void );
extern void mixer_decvolume( void );
extern int mixer_getbothvolume( void );
//extern void mixer_setbothvolume( int v );
#define mixer_setbothvolume( v ) mixer_setvolume( v,v )
#endif