mirror of https://github.com/mpv-player/mpv
160 lines
3.0 KiB
C
160 lines
3.0 KiB
C
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#include <string.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "config.h"
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#include "mixer.h"
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#if defined(USE_OSS_AUDIO)
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/*
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* Mixer interface using OSS style soundcard commands.
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*/
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#include <sys/soundcard.h>
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char * mixer_device=DEV_MIXER;
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int mixer_usemaster=0;
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void mixer_getvolume( float *l,float *r )
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{
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int fd,v,cmd,devs;
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fd=open( mixer_device,O_RDONLY );
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if ( fd != -1 )
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{
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ioctl( fd,SOUND_MIXER_READ_DEVMASK,&devs );
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if ( ( devs & SOUND_MASK_PCM ) && ( mixer_usemaster==0 ) ) cmd=SOUND_MIXER_READ_PCM;
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else
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if ( ( devs & SOUND_MASK_VOLUME ) && ( mixer_usemaster==1 ) ) cmd=SOUND_MIXER_READ_VOLUME;
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else
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{
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close( fd );
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return;
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}
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ioctl( fd,cmd,&v );
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*r=( v & 0xFF00 ) >> 8;
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*l=( v & 0x00FF );
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close( fd );
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}
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}
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void mixer_setvolume( float l,float r )
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{
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int fd,v,cmd,devs;
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fd=open( mixer_device,O_RDONLY );
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if ( fd != -1 )
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{
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ioctl( fd,SOUND_MIXER_READ_DEVMASK,&devs );
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if ( ( devs & SOUND_MASK_PCM ) && ( mixer_usemaster==0 ) ) cmd=SOUND_MIXER_WRITE_PCM;
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else
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if ( ( devs & SOUND_MASK_VOLUME ) && ( mixer_usemaster==1 ) ) cmd=SOUND_MIXER_WRITE_VOLUME;
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else
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{
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close( fd );
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return;
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}
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v=( (int)r << 8 ) | (int)l;
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ioctl( fd,cmd,&v );
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close( fd );
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}
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}
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#elif defined(USE_SUN_AUDIO)
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/*
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* Mixer interface using Sun style soundcard commands.
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*/
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#include <sys/audioio.h>
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char * mixer_device="/dev/audioctl";
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int mixer_usemaster=0;
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void mixer_getvolume( float *l,float *r )
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{
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int fd,v,cmd,devs;
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fd=open( mixer_device,O_RDONLY );
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if ( fd != -1 )
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{
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struct audio_info info;
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ioctl( fd,AUDIO_GETINFO,&info);
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*r=info.play.gain * 100. / AUDIO_MAX_GAIN;
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*l=info.play.gain * 100. / AUDIO_MAX_GAIN;
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close( fd );
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}
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}
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void mixer_setvolume( float l,float r )
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{
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int fd,v,cmd,devs;
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fd=open( mixer_device,O_RDONLY );
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if ( fd != -1 )
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{
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struct audio_info info;
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AUDIO_INITINFO(&info);
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info.play.gain = (r+l) * AUDIO_MAX_GAIN / 100 / 2;
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ioctl( fd,AUDIO_SETINFO,&info );
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close( fd );
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}
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}
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#else
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/*
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* No usable Mixer interface selected.
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* Just some stub routines.
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*/
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char * mixer_device=NULL;
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int mixer_usemaster=0;
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void mixer_getvolume( float *l,float *r ){
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*l = *r = 50.0;
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}
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void mixer_setvolume( float l,float r ){
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}
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#endif
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#define MIXER_CHANGE 3
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void mixer_incvolume( void )
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{
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float mixer_l, mixer_r;
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mixer_getvolume( &mixer_l,&mixer_r );
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mixer_l += MIXER_CHANGE;
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if ( mixer_l > 100 ) mixer_l = 100;
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mixer_r += MIXER_CHANGE;
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if ( mixer_r > 100 ) mixer_r = 100;
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mixer_setvolume( mixer_l,mixer_r );
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}
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void mixer_decvolume( void )
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{
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float mixer_l, mixer_r;
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mixer_getvolume( &mixer_l,&mixer_r );
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mixer_l -= MIXER_CHANGE;
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if ( mixer_l < 0 ) mixer_l = 0;
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mixer_r -= MIXER_CHANGE;
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if ( mixer_r < 0 ) mixer_r = 0;
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mixer_setvolume( mixer_l,mixer_r );
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}
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float mixer_getbothvolume( void )
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{
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float mixer_l, mixer_r;
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mixer_getvolume( &mixer_l,&mixer_r );
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return ( mixer_l + mixer_r ) / 2;
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}
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