diff options
author | root <root@zombrain.(none)> | 2011-07-25 08:54:41 (GMT) |
---|---|---|
committer | root <root@zombrain.(none)> | 2011-07-25 08:54:41 (GMT) |
commit | ab4fcaad149d4bdccefa8f693c2a8e044b40dd4c (patch) | |
tree | c95c280caabc70e7aedbde723e38820047357be7 /hw/xfree86/os-support/solaris/sun_bell.c |
initial state (xorg-server 1.10.2)
Diffstat (limited to 'hw/xfree86/os-support/solaris/sun_bell.c')
-rw-r--r-- | hw/xfree86/os-support/solaris/sun_bell.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/hw/xfree86/os-support/solaris/sun_bell.c b/hw/xfree86/os-support/solaris/sun_bell.c new file mode 100644 index 0000000..b59835e --- /dev/null +++ b/hw/xfree86/os-support/solaris/sun_bell.c @@ -0,0 +1,180 @@ +/* Copyright (c) 2004-2005, Oracle and/or its affiliates. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#ifdef HAVE_XORG_CONFIG_H +#include <xorg-config.h> +#endif + +#include <sys/audio.h> +#include <sys/uio.h> +#include <limits.h> +#include <math.h> +#include <poll.h> + +#include "xf86.h" +#include "xf86Priv.h" +#include "xf86_OSlib.h" + +#define BELL_RATE 48000 /* Samples per second */ +#define BELL_HZ 50 /* Fraction of a second i.e. 1/x */ +#define BELL_MS (1000/BELL_HZ) /* MS */ +#define BELL_SAMPLES (BELL_RATE / BELL_HZ) +#define BELL_MIN 3 /* Min # of repeats */ + +#define AUDIO_DEVICE "/dev/audio" + +void +xf86OSRingBell(int loudness, int pitch, int duration) +{ + static short samples[BELL_SAMPLES]; + static short silence[BELL_SAMPLES]; /* "The Sound of Silence" */ + static int lastFreq; + int cnt; + int i; + int written; + int repeats; + int freq; + audio_info_t audioInfo; + struct iovec iov[IOV_MAX]; + int iovcnt; + double ampl, cyclen, phase; + int audioFD; + + if ((loudness <= 0) || (pitch <= 0) || (duration <= 0)) { + return; + } + + lastFreq = 0; + memset(silence, 0, sizeof(silence)); + + audioFD = open(AUDIO_DEVICE, O_WRONLY | O_NONBLOCK); + if (audioFD == -1) { + xf86Msg(X_ERROR, "Bell: cannot open audio device \"%s\": %s\n", + AUDIO_DEVICE, strerror(errno)); + return; + } + + freq = pitch; + freq = min(freq, (BELL_RATE / 2) - 1); + freq = max(freq, 2 * BELL_HZ); + + /* + * Ensure full waves per buffer + */ + freq -= freq % BELL_HZ; + + if (freq != lastFreq) { + lastFreq = freq; + ampl = 16384.0; + + cyclen = (double) freq / (double) BELL_RATE; + phase = 0.0; + + for (i = 0; i < BELL_SAMPLES; i++) { + samples[i] = (short) (ampl * sin(2.0 * M_PI * phase)); + phase += cyclen; + if (phase >= 1.0) + phase -= 1.0; + } + } + + repeats = (duration + (BELL_MS / 2)) / BELL_MS; + repeats = max(repeats, BELL_MIN); + + loudness = max(0, loudness); + loudness = min(loudness, 100); + +#ifdef DEBUG + ErrorF("BELL : freq %d volume %d duration %d repeats %d\n", + freq, loudness, duration, repeats); +#endif + + AUDIO_INITINFO(&audioInfo); + audioInfo.play.encoding = AUDIO_ENCODING_LINEAR; + audioInfo.play.sample_rate = BELL_RATE; + audioInfo.play.channels = 2; + audioInfo.play.precision = 16; + audioInfo.play.gain = min(AUDIO_MAX_GAIN, AUDIO_MAX_GAIN * loudness / 100); + + if (ioctl(audioFD, AUDIO_SETINFO, &audioInfo) < 0){ + xf86Msg(X_ERROR, + "Bell: AUDIO_SETINFO failed on audio device \"%s\": %s\n", + AUDIO_DEVICE, strerror(errno)); + close(audioFD); + return; + } + + iovcnt = 0; + + for (cnt = 0; cnt <= repeats; cnt++) { + if (cnt == repeats) { + /* Insert a bit of silence so that multiple beeps are distinct and + * not compressed into a single tone. + */ + iov[iovcnt].iov_base = (char *) silence; + iov[iovcnt++].iov_len = sizeof(silence); + } else { + iov[iovcnt].iov_base = (char *) samples; + iov[iovcnt++].iov_len = sizeof(samples); + } + if ((iovcnt >= IOV_MAX) || (cnt == repeats)) { + written = writev(audioFD, iov, iovcnt); + + if ((written < ((int)(sizeof(samples) * iovcnt)))) { + /* audio buffer was full! */ + + int naptime; + + if (written == -1) { + if (errno != EAGAIN) { + xf86Msg(X_ERROR, + "Bell: writev failed on audio device \"%s\": %s\n", + AUDIO_DEVICE, strerror(errno)); + close(audioFD); + return; + } + i = iovcnt; + } else { + i = ((sizeof(samples) * iovcnt) - written) + / sizeof(samples); + } + cnt -= i; + + /* sleep a little to allow audio buffer to drain */ + naptime = BELL_MS * i; + poll(NULL, 0, naptime); + + i = ((sizeof(samples) * iovcnt) - written) % sizeof(samples); + iovcnt = 0; + if ((written != -1) && (i > 0)) { + iov[iovcnt].iov_base = ((char *) samples) + i; + iov[iovcnt++].iov_len = sizeof(samples) - i; + } + } else { + iovcnt = 0; + } + } + } + + close(audioFD); + return; +} |