2006-11-01 22:10:26 +01:00
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/* Copyright 2004-2005 Sun Microsystems, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, and/or sell copies of the Software, and to permit persons
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* to whom the Software is furnished to do so, provided that the above
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* copyright notice(s) and this permission notice appear in all copies of
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* the Software and that both the above copyright notice(s) and this
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* permission notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
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* OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
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* INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Except as contained in this notice, the name of a copyright holder
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* shall not be used in advertising or otherwise to promote the sale, use
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* or other dealings in this Software without prior written authorization
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* of the copyright holder.
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include <sys/audio.h>
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#include <sys/uio.h>
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#include <limits.h>
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#include <math.h>
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#include <poll.h>
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#include "xf86.h"
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#include "xf86Priv.h"
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2006-11-03 01:38:12 +01:00
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#include "xf86_OSlib.h"
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2006-11-01 22:10:26 +01:00
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#define BELL_RATE 48000 /* Samples per second */
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#define BELL_HZ 50 /* Fraction of a second i.e. 1/x */
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#define BELL_MS (1000/BELL_HZ) /* MS */
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#define BELL_SAMPLES (BELL_RATE / BELL_HZ)
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#define BELL_MIN 3 /* Min # of repeats */
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#define AUDIO_DEVICE "/dev/audio"
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Rework symbol visibility for easier maintenance
Save in a few special cases, _X_EXPORT should not be used in C source
files. Instead, it should be used in headers, and the proper C source
include that header. Some special cases are symbols that need to be
shared between modules, but not expected to be used by external drivers,
and symbols that are accessible via LoaderSymbol/dlopen.
This patch also adds conditionally some new sdk header files, depending
on extensions enabled. These files were added to match pattern for
other extensions/modules, that is, have the headers "deciding" symbol
visibility in the sdk. These headers are:
o Xext/panoramiXsrv.h, Xext/panoramiX.h
o fbpict.h (unconditionally)
o vidmodeproc.h
o mioverlay.h (unconditionally, used only by xaa)
o xfixes.h (unconditionally, symbols required by dri2)
LoaderSymbol and similar functions now don't have different prototypes,
in loaderProcs.h and xf86Module.h, so that both headers can be included,
without the need of defining IN_LOADER.
xf86NewInputDevice() device prototype readded to xf86Xinput.h, but
not exported (and with a comment about it).
2008-12-03 08:43:34 +01:00
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void
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2006-11-01 22:10:26 +01:00
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xf86OSRingBell(int loudness, int pitch, int duration)
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{
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static short samples[BELL_SAMPLES];
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static short silence[BELL_SAMPLES]; /* "The Sound of Silence" */
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static int lastFreq;
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int cnt;
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int i;
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int written;
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int repeats;
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int freq;
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audio_info_t audioInfo;
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struct iovec iov[IOV_MAX];
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int iovcnt;
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double ampl, cyclen, phase;
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int audioFD;
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if ((loudness <= 0) || (pitch <= 0) || (duration <= 0)) {
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2006-12-01 05:13:52 +01:00
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return;
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2006-11-01 22:10:26 +01:00
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}
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lastFreq = 0;
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bzero(silence, sizeof(silence));
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audioFD = open(AUDIO_DEVICE, O_WRONLY | O_NONBLOCK);
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if (audioFD == -1) {
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xf86Msg(X_ERROR, "Bell: cannot open audio device \"%s\": %s\n",
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AUDIO_DEVICE, strerror(errno));
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2006-12-01 05:13:52 +01:00
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return;
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2006-11-01 22:10:26 +01:00
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}
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freq = pitch;
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freq = min(freq, (BELL_RATE / 2) - 1);
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freq = max(freq, 2 * BELL_HZ);
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/*
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* Ensure full waves per buffer
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*/
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freq -= freq % BELL_HZ;
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if (freq != lastFreq) {
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lastFreq = freq;
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ampl = 16384.0;
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cyclen = (double) freq / (double) BELL_RATE;
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phase = 0.0;
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for (i = 0; i < BELL_SAMPLES; i++) {
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samples[i] = (short) (ampl * sin(2.0 * M_PI * phase));
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phase += cyclen;
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if (phase >= 1.0)
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phase -= 1.0;
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}
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}
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repeats = (duration + (BELL_MS / 2)) / BELL_MS;
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repeats = max(repeats, BELL_MIN);
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loudness = max(0, loudness);
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loudness = min(loudness, 100);
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#ifdef DEBUG
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ErrorF("BELL : freq %d volume %d duration %d repeats %d\n",
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freq, loudness, duration, repeats);
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#endif
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AUDIO_INITINFO(&audioInfo);
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audioInfo.play.encoding = AUDIO_ENCODING_LINEAR;
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audioInfo.play.sample_rate = BELL_RATE;
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audioInfo.play.channels = 2;
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audioInfo.play.precision = 16;
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audioInfo.play.gain = min(AUDIO_MAX_GAIN, AUDIO_MAX_GAIN * loudness / 100);
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if (ioctl(audioFD, AUDIO_SETINFO, &audioInfo) < 0){
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xf86Msg(X_ERROR,
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"Bell: AUDIO_SETINFO failed on audio device \"%s\": %s\n",
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AUDIO_DEVICE, strerror(errno));
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close(audioFD);
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2006-12-01 05:13:52 +01:00
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return;
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2006-11-01 22:10:26 +01:00
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}
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iovcnt = 0;
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for (cnt = 0; cnt <= repeats; cnt++) {
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iov[iovcnt].iov_base = (char *) samples;
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iov[iovcnt++].iov_len = sizeof(samples);
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if (cnt == repeats) {
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/* Insert a bit of silence so that multiple beeps are distinct and
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* not compressed into a single tone.
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*/
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iov[iovcnt].iov_base = (char *) silence;
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iov[iovcnt++].iov_len = sizeof(silence);
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}
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if ((iovcnt >= IOV_MAX) || (cnt == repeats)) {
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written = writev(audioFD, iov, iovcnt);
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if ((written < ((int)(sizeof(samples) * iovcnt)))) {
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/* audio buffer was full! */
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int naptime;
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if (written == -1) {
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if (errno != EAGAIN) {
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xf86Msg(X_ERROR,
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"Bell: writev failed on audio device \"%s\": %s\n",
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AUDIO_DEVICE, strerror(errno));
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close(audioFD);
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return;
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2006-11-01 22:10:26 +01:00
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}
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i = iovcnt;
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} else {
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i = ((sizeof(samples) * iovcnt) - written)
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/ sizeof(samples);
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}
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cnt -= i;
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/* sleep a little to allow audio buffer to drain */
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naptime = BELL_MS * i;
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poll(NULL, 0, naptime);
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i = ((sizeof(samples) * iovcnt) - written) % sizeof(samples);
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iovcnt = 0;
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if ((written != -1) && (i > 0)) {
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iov[iovcnt].iov_base = ((char *) samples) + i;
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iov[iovcnt++].iov_len = sizeof(samples) - i;
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}
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} else {
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iovcnt = 0;
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}
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}
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}
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close(audioFD);
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2006-12-01 05:13:52 +01:00
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return;
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2006-11-01 22:10:26 +01:00
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}
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