358 lines
7.8 KiB
C
358 lines
7.8 KiB
C
/* E-Mixer.c
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*
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* Copyright (C) 1999-2000 Tom Gilbert, Steve Brunton
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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/* SGI Stuff skillfully implemented (and supported by) Steve Brunton
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* <brunton@dweeb.turner.com> */
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#include <stdio.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <config.h>
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#include "epplet.h"
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#ifdef HAVE_LINUX_SOUNDCARD_H
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#include <linux/soundcard.h>
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#elif HAVE_MACHINE_SOUNDCARD_H
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#include <machine/soundcard.h>
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#elif HAVE_SYS_SOUNDCARD_H
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#include <sys/soundcard.h>
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#elif SGI_AUDIO
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#include <dmedia/audio.h>
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#define MAX_CHANNELS 8
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#else
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#error No soundcard defenition!
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#endif /* SOUNDCARD_H */
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Epplet_gadget slider, mutebtn, closebtn, helpbtn;
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#ifdef SGI_AUDIO
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ALport audport;
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int minVol; /* to deal with SGI audio HW volume ranges */
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float adjPct;
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#else
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int mixerfd = -1;
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#endif
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int mute;
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int vol;
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int layout;
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#define LAYOUT_CONVENTIONAL 0
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#define LAYOUT_WIDE 1
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#define LAYOUT_TALL 2
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static void
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openMixer(char *device_name)
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{
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#ifdef OSS_GETVERSION
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int res, ver;
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#endif
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#ifdef SGI_AUDIO
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ALparamInfo pi;
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int maxVol;
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audport = alOpenPort(device_name, "w", NULL);
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if (!audport)
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{
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fprintf(stderr, "Couldn't open audio port %s\n", device_name);
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exit(1);
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}
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alGetParamInfo(alGetResource(audport), AL_GAIN, &pi);
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minVol = alFixedToDouble(pi.min.ll);
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maxVol = alFixedToDouble(pi.max.ll);
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adjPct = (maxVol - minVol) * 0.01;
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#else
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mixerfd = open(device_name, O_RDWR, 0);
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if (mixerfd < 0)
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{
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fprintf(stderr, "Couldn't open mixer device %s\n", device_name);
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exit(1);
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}
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#endif
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/* check driver-version */
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#ifdef OSS_GETVERSION
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res = ioctl(mixerfd, OSS_GETVERSION, &ver);
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if ((res == 0) && (ver != SOUND_VERSION))
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{
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fprintf(stderr,
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"warning: compiled "
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"with a different version of\nsoundcard.h.\n");
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}
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#endif
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}
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static int
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readMixer(void)
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{
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#ifdef SGI_AUDIO
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int x;
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int numchan = 0;
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double tvol = 0;
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ALpv audpv[2]; /* audio resource paramater info */
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ALfixed gain[MAX_CHANNELS]; /* where to store the gain information. up to 8 channels */
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audpv[0].param = AL_GAIN;
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audpv[0].value.ptr = gain;
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audpv[0].sizeIn = MAX_CHANNELS; /* can get up to 8-channel vector back */
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if (alGetParams(alGetResource(audport), audpv, 1) < 0)
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{
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fprintf(stderr, "alGetParams failed: %d\n", oserror());
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}
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else
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{
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if (audpv[0].sizeOut < 0)
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{
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fprintf(stderr, "AL_GAIN was an invalid paramater\n");
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}
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else
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{
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for (x = 0; x < audpv[0].sizeOut; x++)
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{
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tvol += alFixedToDouble(gain[x]);
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++numchan;
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}
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}
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}
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if (layout == LAYOUT_TALL)
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return 100 - ((tvol / numchan) - minVol) / adjPct;
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return ((tvol / numchan) - minVol) / adjPct;
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#else
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int tvol, r, l;
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ioctl(mixerfd, MIXER_READ(SOUND_MIXER_VOLUME), &tvol);
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l = tvol & 0xff;
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r = (tvol & 0xff00) >> 8;
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if (layout == LAYOUT_TALL)
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return 100 - (r + l) / 2;
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return (r + l) / 2;
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#endif
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}
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static void
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setMixer(int vol)
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{
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int tvol;
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#ifdef SGI_AUDIO
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int x;
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ALpv audpv[2];
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ALfixed gain[MAX_CHANNELS];
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tvol = (vol * adjPct) + minVol;
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for (x = 0; x < MAX_CHANNELS; ++x)
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{
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gain[x] = alDoubleToFixed(tvol);
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}
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audpv[0].param = AL_GAIN;
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audpv[0].value.ptr = gain;
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audpv[0].sizeIn = MAX_CHANNELS;
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if (alSetParams(alGetResource(audport), audpv, 1) < 0)
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{
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fprintf(stderr, "alSetParams failed : %d\n", oserror());
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}
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if (audpv[0].sizeOut < 0)
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{
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fprintf(stderr, "volume - %d wasn't valid\n", tvol);
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}
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#else
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tvol = (vol << 8) + vol;
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ioctl(mixerfd, MIXER_WRITE(SOUND_MIXER_VOLUME), &tvol);
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#endif
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}
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static void
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cb_close(void *data)
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{
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Epplet_unremember();
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#ifdef SGI_AUDIO
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alClosePort(audport);
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#else
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close(mixerfd);
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#endif
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Esync();
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exit(0);
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data = NULL;
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}
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static void
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mute_cb(void *data)
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{
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static int old_vol = 0;
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if (mute == 1)
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{
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old_vol = vol;
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setMixer(0);
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}
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else
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{
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vol = old_vol;
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if (layout == LAYOUT_TALL)
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setMixer(100 - vol);
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else
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setMixer(vol);
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}
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return;
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data = NULL;
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}
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static void
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adj_cb(void *data)
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{
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if (!mute)
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{
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if (layout == LAYOUT_TALL)
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setMixer(100 - vol);
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else
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setMixer(vol);
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}
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return;
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data = NULL;
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}
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static void
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cb_help(void *data)
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{
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Epplet_show_about("E-Mixer");
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return;
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data = NULL;
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}
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static void
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mixer_timeout_callback(void *data)
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{
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vol = readMixer();
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Epplet_gadget_data_changed(slider);
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Epplet_timer(mixer_timeout_callback, NULL, 0.5, "TIMER");
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return;
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data = NULL;
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}
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static void
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create_mixer_gadget(void)
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{
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vol = readMixer();
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switch (layout)
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{
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case LAYOUT_WIDE:
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slider =
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Epplet_create_hslider(30, 3, 48, 0, 100, 1, 25, &vol, adj_cb, NULL);
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mutebtn =
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Epplet_create_togglebutton("M", NULL, 80, 2, 12, 12, &mute,
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mute_cb, NULL);
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closebtn =
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Epplet_create_button(NULL, NULL, 2, 2, 0, 0, "CLOSE", 0, NULL,
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cb_close, NULL);
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helpbtn =
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Epplet_create_button(NULL, NULL, 16, 2, 0, 0, "HELP", 0, NULL,
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cb_help, NULL);
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break;
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case LAYOUT_TALL:
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slider =
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Epplet_create_vslider(3, 30, 48, 0, 100, 1, 25, &vol, adj_cb, NULL);
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mutebtn =
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Epplet_create_togglebutton("M", NULL, 2, 80, 12, 12, &mute,
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mute_cb, NULL);
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closebtn =
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Epplet_create_button(NULL, NULL, 2, 2, 0, 0, "CLOSE", 0, NULL,
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cb_close, NULL);
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helpbtn =
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Epplet_create_button(NULL, NULL, 2, 16, 0, 0, "HELP", 0, NULL,
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cb_help, NULL);
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break;
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default:
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slider =
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Epplet_create_hslider(4, 4, 40, 0, 100, 1, 25, &vol, adj_cb, NULL);
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mutebtn =
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Epplet_create_togglebutton("Mute", NULL, 5, 18, 36, 12, &mute,
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mute_cb, NULL);
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closebtn =
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Epplet_create_button(NULL, NULL, 2, 34, 0, 0, "CLOSE", 0, NULL,
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cb_close, NULL);
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helpbtn =
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Epplet_create_button(NULL, NULL, 34, 34, 0, 0, "HELP", 0, NULL,
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cb_help, NULL);
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}
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mute = 0;
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Epplet_gadget_show(slider);
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Epplet_gadget_show(mutebtn);
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Epplet_gadget_show(closebtn);
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Epplet_gadget_show(helpbtn);
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Epplet_timer(mixer_timeout_callback, NULL, 0.5, "TIMER");
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}
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int
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main(int argc, char **argv)
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{
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int i;
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atexit(Epplet_cleanup);
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#ifdef SGI_AUDIO
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openMixer("audout");
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#else
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openMixer("/dev/mixer");
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#endif
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layout = LAYOUT_CONVENTIONAL;
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for (i = 1; i < argc; i++)
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{
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if (!strcmp(argv[i], "--wide"))
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{
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layout = LAYOUT_WIDE;
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}
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else if (!strcmp(argv[i], "--tall"))
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{
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layout = LAYOUT_TALL;
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}
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}
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switch (layout)
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{
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case LAYOUT_WIDE:
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Epplet_Init("E-Mixer", "0.2", "Enlightenment Volume Control Epplet",
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6, 1, argc, argv, 0);
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break;
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case LAYOUT_TALL:
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Epplet_Init("E-Mixer", "0.2", "Enlightenment Volume Control Epplet",
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1, 6, argc, argv, 0);
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break;
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default:
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Epplet_Init("E-Mixer", "0.2", "Enlightenment Volume Control Epplet",
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3, 3, argc, argv, 0);
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}
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create_mixer_gadget();
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Epplet_show();
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Epplet_Loop();
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return 0;
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}
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