# Select your audio output device. Current choices are:
#
-# Sun: Sun workstation with audio hardware.
-# HP: HP9000s700 with audio hardware.
# X11: The X11 window system.
-# Indigo: SGI Indigo workstation.
# Linux: IBM PC Console running Linux.
-# AdLib: AdLib/SoundBlaster FM chip.
# OSS: Open Sound System /dev/dsp device.
#
# Two notes about OSS:
# beep.h interface. See beep*.c for examples. Please send any additions
# to the authors!
#
-#DEVICE = Sun
-#DEVICE = HP
#DEVICE = X11
-#DEVICE = Indigo
#DEVICE = Linux
-#DEVICE = AdLib
DEVICE = OSS
#
# For alternate random number generator, add either -DUSELRAND for lrand48(),
# or -DUSERAND for (ugh) rand(). Default is -DUSERANDOM for random().
-#
-# On a Sun workstation you may want to compile with -DFULLVOLUME (see beepSun.c
-# for more details).
-#
#DEFINES = -DUSELRAND
-#DEFINES = -DFULLVOLUME
#DEFINES =
VERS=$(shell sed <morse.spec -n -e '/Version: \(.*\)/s//\1/p')
-BEEPERS = beepAdLib.c beepHP.c beepLinux.c beepSun.c beepIndigo.c \
- beepOSS.c beepX11.c
+BEEPERS = beepLinux.c beepOSS.c beepX11.c
SOURCES = alarm.c morse.c alarm.h beep.h $(BEEPERS)
MANPAGES = morse.1 QSO.1
DOCS = README HISTORY morse.xml morse.spec $(MANPAGES)
rm -f $@
ln morse${DEVICE} $@
-morseSun: morse.o beepSun.o
- $(CC) -o $@ morse.o beepSun.o -L/usr/demo/SOUND -laudio -lm
-
-morseHP: morse.o beepHP.o alarm.o
- $(CC) -o $@ morse.o beepHP.o alarm.o -lm
-
morseX11: morse.o beepX11.o alarm.o
$(CC) -o $@ morse.o beepX11.o alarm.o $(X11LIBS)
-morseIndigo: morse.o beepIndigo.o
- $(CC) -o $@ morse.o beepIndigo.o -laudio -lm
-
morseLinux: morse.o beepLinux.o alarm.o
$(CC) -o $@ morse.o beepLinux.o alarm.o -lm
-morseAdLib: morse.o beepAdLib.o alarm.o
- $(CC) $(CFLAGS) -o $@ morse.o beepAdLib.o alarm.o -lm
- strip $@
- chown root:root $@
- chmod a+sx $@
-
morseOSS: morse.o beepOSS.o
$(CC) $(CFLAGS) -o $@ morse.o beepOSS.o -lm
all: morse QSO
clean:
- rm -f *.o morse QSO morseSun morseHP morseX11 morseIndigo morseLinux morseAdLib morseOSS
+ rm -f *.o morse QSO morseX11 morseLinux morseOSS
cd qso; make clean
pristine: clean
rm -f $(MANPAGES)
morse.o: beep.h Makefile
-beepSun.o: beep.h
-beepHP.o: beep.h alarm.h
beepX11.o: beep.h alarm.h
-beepIndigo.o: beep.h
beepLinux.o: beep.h alarm.h
-beepAdLib.o: beep.h alarm.h
beepOSS.o: beep.h
alarm.o: alarm.h
+++ /dev/null
-/* beepAdLib.c -- Jacek M. Holeczek 3/2000 */
-/* A lot of code taken from the sccw Linux Morse program by */
-/* Steven J. Merrifield VK3ESM sjm@ee.latrobe.edu.au */
-
-/*
- Implementation of beep for the AdLib/SoundBlaster FM chip.
-
- Warning: All low-level access is achieved by writing directly to the
- IO ports of the soundcard, hence this program must be compiled using
- at least -O2 and run setuid root. Hence, this program must be installed
- by root, but can then be run by a normal user.
-
- Must compile with -O2 -lm and optionally -DDEBUG_FREQ
-*/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <math.h>
-#include <sys/io.h>
-
-#include "alarm.h"
-#include "beep.h"
-
-/* Define it if you want to reset the AdLib/SoundBlaster FM chip. */
-#undef RESET_ADLIB
-
-/* The port addresses for the FM chip is always the same. */
-#define reg_port 0x0388
-#define data_port reg_port+1
-
-void wr_register(int index, int data) /* See the PC Game Programmers Encyclopedia */
-{
- int i,temp;
- outb(index,reg_port);
- for (i=1;i<7;i++)
- temp = inb(reg_port);
- outb(data,data_port);
- for (i=1;i<36;i++)
- temp = inb(reg_port);
-}
-
-int AdLib_found(void) /* See the PC Game Programmers Encyclopedia */
-{
- long temp1,temp2;
- wr_register(4,0x60);
- wr_register(4,0x80);
- temp1 = inb(reg_port);
- wr_register(2,0xFF);
- wr_register(4,0x21);
- sleep(1);
- temp2 = inb(reg_port);
- wr_register(4,0x60);
- wr_register(4,0x80);
- if (((temp1 & 0xE0) == 0) && ((temp2 & 0xE0) == 0xC0))
- {
- return 0; /* card found and no errors */
- } else {
- return 1; /* card not found or errors */
- }
-}
-
-#ifdef RESET_ADLIB
-void Reset_AdLib(void) /* Set all registers to 0 */
-{
- int i;
- for (i=1;i<245;i++)
- wr_register(i,0);
-}
-#endif
-
-int BeepInit(void)
-{
- if (geteuid())
- {
- fprintf(stderr,"This program must run as root (setuid root).\n");
- return 1;
- }
- ioperm(reg_port,17,1);
- ioperm(data_port,17,1);
- if (AdLib_found())
- {
- fprintf(stderr,"The AdLib/SoundBlaster card not found.\n");
- ioperm(reg_port,17,0);
- ioperm(data_port,17,0);
- return 2;
- }
-#ifdef RESET_ADLIB
- Reset_AdLib();
-#else
- wr_register(0xB0,0x00); /* Turn off sound, was 0x11 */
-#endif
- return 0;
-}
-
-int Beep(int time, int volume, int pitch)
-{
- int blk = -1;
- int f_num;
- int A0_reg,B0_reg,B0_reg10,B0_reg432;
-
- BeepWait();
- AlarmSet(time);
-
- if (volume > 0 && pitch > 0)
- {
- wr_register(0x20,1); /* Play sound at fundamental freq. */
- wr_register(0x23,1); /* Carrier at specified freq. */
- wr_register(0x43,(64*(100-volume)/100)); /* Volume 0-64 */
-
- wr_register(0x63,0xF0); /* Carrier attack = fast, decay = slow */
- wr_register(0x83,0xFF); /* Carrier sustain = soft, release = fast */
-
- /* Would you belive it took three days to work out how to do this ? */
- do
- {
- blk++;
- f_num = (int)(((float)pitch / 50000.0) / (1/(pow(2,abs(blk-20)))));
- } while (f_num > 1023);
- A0_reg = f_num & 0x00FF;
- B0_reg10 = (f_num & 0x0300) >> 8;
- B0_reg432 = (blk << 2) & 0x00FF; /* Do I really need to & 0x00ff ?? */
- B0_reg = (32 | B0_reg432 | B0_reg10) & 0x00FF;
-
- wr_register(0xA0,A0_reg);
- wr_register(0xB0,B0_reg);
-
-#ifdef DEBUG_FREQ
- printf("blk = %d f_num = %d\n",blk,f_num);
- printf("B0_reg432 = %2x\n",B0_reg432); /* bits 4 3 2 */
- printf("B0_reg10 = %2x\n",B0_reg10); /* bits 1 0 */
- printf("B0_reg = %2x A0_reg = %2x\n\n\n",B0_reg,A0_reg);
-#endif
- }
-
- return 0;
-}
-
-int BeepWait(void)
-{
- AlarmWait();
- wr_register(0xB0,0x00); /* Turn off sound, was 0x11 */
- return 0;
-}
-
-int BeepCleanup(void)
-{
-#ifdef RESET_ADLIB
- Reset_AdLib();
-#else
- wr_register(0xB0,0x00); /* Turn off sound, was 0x11 */
-#endif
- ioperm(reg_port,17,0);
- ioperm(data_port,17,0);
- return 0;
-}
-
-int BeepResume(void)
-{
- ioperm(reg_port,17,1);
- ioperm(data_port,17,1);
-#ifdef RESET_ADLIB
- Reset_AdLib();
-#else
- wr_register(0xB0,0x00); /* Turn off sound, was 0x11 */
-#endif
- return 0;
-}
+++ /dev/null
-/* beepHP.c -- seligman 5/92 */
-
-/*
--- Implementation of beep.h for HP9000s700 with audio hardware.
---
--- If the environment variable SPEAKER begins with "E", the external
--- audio connection is used. If it begins with "I", the internal speaker
--- is used. Otherwise both are used.
---
--- Compile with the math library "-lm".
-*/
-
-#include "beep.h"
-#include "alarm.h"
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <ctype.h>
-#include <math.h>
-#include <fcntl.h>
-#include <malloc.h>
-
-
-static char *AudioDev;
-
-static int DoBeep();
-
-
-int BeepInit()
-{
- char *speaker = getenv("SPEAKER");
- int fd;
-
- AudioDev = speaker && toupper(speaker[0])=='E' ? "/dev/audioEL"
- : speaker && toupper(speaker[0])=='I' ? "/dev/audioIL"
- : "/dev/audioBL";
-
- /*
- -- A quick check to ensure that we can open the device.
- */
- if ((fd = open(AudioDev, O_WRONLY)) < 0) {
- perror("?? Error opening audio device");
- return 1;
- }
- close(fd);
- return 0;
-}
-
-
-/*
--- Optimized for the case where volume & pitch don't change (except possibly
--- to zero and back) between successive calls.
-*/
-int Beep(time, volume, pitch)
- int time, volume, pitch;
-{
- int rc;
-
- AlarmWait();
- if (volume != 0 && pitch != 0)
- if ((rc = DoBeep(time, volume, pitch)) != 0)
- return rc;
- AlarmSet(time);
- return 0;
-}
-
-
-int BeepWait()
-{
- AlarmWait();
- return 0;
-}
-
-
-int BeepCleanup()
-{
- return 0;
-}
-
-
-int BeepResume()
-{
- return 0;
-}
-
-
-/*----------------------------------------*/
-
-#define SamplingRate 8000 /* audio device samples per second */
-#define NumRamp (SamplingRate / 200) /* # samples in 5ms ramp up/down */
-
-typedef short int Sample;
-#define MaxSample (Sample)0x7FFF
-
-
-/*
--- Sound a beep.
--- Optimized for the case where volume & pitch don't change between successive
--- calls.
-*/
-static int DoBeep(time, volume, pitch)
- int time, volume, pitch;
-{
- static int audioDevFD = -1; /* -1 indicates not yet open. */
-
- /* Save sample buffer from call to call, and reuse it when possible. */
- static Sample *buf = NULL;
- static int bufLen = 0;
- static int bufVolume = 0;
- static int bufPitch = 0;
-
- Sample rampbuf[NumRamp]; /* Sample buffer for ramp-down. */
-
- /* Are volume and pitch same as previous call? */
- int sameVP = (volume == bufVolume && pitch == bufPitch);
-
- int i, j;
- int numSamples = SamplingRate * time / 1000;
-
- /*
- -- It seems that the first write to the audio device after it's
- -- been opened must be the longest.
- */
- if (numSamples > bufLen) {
- if (audioDevFD >= 0) close(audioDevFD);
- audioDevFD = -1;
- }
- if (audioDevFD < 0) {
- if ((audioDevFD = open(AudioDev, O_WRONLY)) < 0) {
- perror("?? Error opening audio device");
- return 1;
- }
- }
-
- /*
- -- Allocate space for sample buffer. Set "i" to lowest index in
- -- need of updating.
- */
- i = sameVP ? bufLen : 0;
- if (numSamples > bufLen) {
- if (sameVP) {
- buf = realloc(buf, numSamples * sizeof(Sample));
- } else {
- if (buf != NULL) free(buf);
- bufVolume = volume;
- bufPitch = pitch;
- buf = malloc(numSamples * sizeof(Sample));
- }
- if (buf == NULL) {
- fprintf(stderr, "?? Buy more memory.\n");
- return 1;
- }
- bufLen = numSamples;
- }
-
- /*
- -- Update any newly-allocated tail of sample buffer. The ramp-up is
- -- handled here (since it always occurs at the same place); the ramp-down
- -- is handled later.
- */
- while (i < bufLen) {
- double rampScale = (i < NumRamp) ? (double) i / NumRamp : 1;
- double t = (double) i / SamplingRate;
- buf[i++] =
- sin(2 * M_PI * pitch * t) * MaxSample * rampScale * volume / 100;
- }
-
- /* Sound the beep, except for the ramp-down. */
- write(audioDevFD, buf, (numSamples - NumRamp) * sizeof(Sample));
-
- /* Ramp-down */
- for (i = 0, j = numSamples-NumRamp; i < NumRamp; i++, j++)
- rampbuf[i] = buf[j] * ((double) (NumRamp - i) / NumRamp);
- write(audioDevFD, rampbuf, sizeof rampbuf);
-
- return 0;
-}
+++ /dev/null
-/* beepIndigo.c John R. Murray murray@scri.fsu.edu Jan. 4, 1994. Implementation
- * of beep.h for SGI Indigos. Basically a quick rewrite of beepSun.c, written
- * by seligman et al 6/92
- */
-
-/*
- * If the audio library or audio include files are missing, you need
- * to get sound support off the SGI distribution tapes or CD.
- *
- * Defining FULLVOLUME has no effect. See notes below.
- */
-
-/* NOTES: This will not compile on the older Personal Irises (4D/20 and 4D/25).
--- It should work for newer PIs (4D/30 and 4D/35) on SGI models newer than the
--- Indigo (Indy and Indigo^2), but has not been tested. Basically, anything
--- that uses the Audio Library (ALwhatever function names), and *not* the
--- /dev/audio interface, should work.
---
--- The sound library on my machine is only a partial implementation, so some
--- functionality in beep.h is missing. Notably:
---
--- 1) No software volume control. (relative volume with -v still works, tho)
---
--- 2) No software control of sampling rate.
---
--- These parameters are controllable through the Audio Control Panel,
--- accessible through the Tools submenu, or by running /usr/sbin/apanel.
--- NOTE: This code assumes you have the output sampling rate set to 48 KHz
--- (the default). If the tone is too low and the code timing is too slow,
--- your output sampling rate is incorrect and will need to be set to 48 KHz.
---
--- If you implement volume and sampling rate control, please be sure to send
--- the updated code to the writer of morse.c, joe@montebello.soest.hawaii.edu,
--- or to me and I'll forward it.
-*/
-
-#include "beep.h"
-#include <audio.h>
-#include <math.h>
-
-#define ABUFSIZ (100000) /* 100000 is default buffer size */
-#define RATE (48000) /*48 K samples = 1 second (assuming it's set to the default)*/
-#define RAMP (RATE * 10 / 1000) /* 10 millisecond ramp */
-#define MAXTIME (ABUFSIZ) /* If STEREO, MAXTIME = ABUFSIZ / 2 */
-#define ASCALE (100) /* multiplier to size waveform to port width (assuming 8bit) */
-
-ALport outPort;
-
-void writeSound(port, buffer, len)
-ALport port;
-signed char buffer[];
-unsigned long len;
-{
- signed char *bufp;
- unsigned long len2, fill;
-
- bufp = buffer;
- len2 = len;
- while ((fill = ALgetfillable(port)) < len2)
- {
- if (fill)
- {
- /* write as much as we can */
- ALwritesamps(port, bufp, fill);
- bufp += fill;
- len2 -= fill;
- }
- else
- {
- /* wait 1/CLK_TCK seconds (1/100 sec on my machine) */
- sginap(1);
- }
- }
- ALwritesamps(port, bufp, len2);
-}
-
-int
-BeepInit ()
-{
-
- ALconfig config;
-
- config = ALnewconfig();
- /* starting with default config (stereo, 16 bit wide samples, 100k buffer) */
- /* NOTE: we're assuming the sampling rate is set to the default (48K) */
- /* (software control of sampling rate is not fully implemented by SGI yet */
-
- if (config == 0)
- {
- /* Uh oh! */
- return 1;
- }
- else
- {
- /* this is just to avoid rewriting much of Beep, we could
- * run 24 bit stereo if we wanted.
- */
- ALsetwidth(config, AL_SAMPLE_8);
- ALsetchannels(config, AL_MONO); /* if STEREO, fix the #define of MAXTIME */
- ALsetqueuesize(config, ABUFSIZ);
-
-#ifdef FULLVOLUME
- /* software volume control not fully implemented by SGI yet */
-#endif
-
- if (0 == (outPort = ALopenport("morse", "w", config)))
- /* another problem */
- return 1;
- ALfreeconfig(config);
- return 0;
- }
-}
-
-
-int
-Beep (time, volume, pitch)
- int time, volume, pitch;
-{
-static signed char silence[MAXTIME];
-static signed char soundbuf[MAXTIME - RAMP];
-static signed char ramp_down[RAMP];
-static long last_n = 0xFFFFFFFFL;
-static int last_pitch = -1, last_volume = -1;
-static int first_time = 1;
-
-int i, cycle;
-unsigned long n, first_len, down_len;
-double dt;
-
-/*
- * Initialize the sound of silence
- */
- if (first_time == 1)
- {
- for (i = 0; i < MAXTIME; i++)
- silence[i] = 0;
- first_time = 0;
- }
-
-
-/*
- * Finagle the number of samples
- */
- n = (time / 1000.) * RATE; /* Number samples in tone time */
- n = n < MAXTIME ? n : MAXTIME; /* clip to buffer size */
- n = n < 2 * RAMP ? 2 * RAMP : n; /* leave room for ramps */
-
-/*
- * Catch stupidity
- */
- if (pitch <= 0)
- volume = 0;
-
-
- if (volume <= 0)
- {
- writeSound(outPort, silence, n);
- }
- else
- {
-/*
- * clip to Nyquist
- * (Of course this means that if you ask for too high a frequency you
- * just get silence, since you sample all the zero-crossings of the
- * sine wave.)
- */
- pitch = pitch < RATE / 2 ? pitch : RATE / 2;
- cycle = ((RATE + 1.e-6) / pitch); /* samples per cycle */
-
- if (cycle > MAXTIME / 2)
- cycle = MAXTIME / 2;
-
- /* round down length of (rampup + mesa top) to integral cycle */
- first_len = ((n - RAMP) / cycle) * cycle;
- if (first_len < cycle)
- first_len = cycle;
- if (first_len > MAXTIME - RAMP)
- first_len = MAXTIME - RAMP;
-
- /* round down length of (rampdown) to integral cycle */
- down_len = ((RAMP) / cycle) * cycle;
- if (down_len < cycle)
- down_len = cycle;
- if (down_len > RAMP)
- down_len = RAMP;
-
-/*
- * Can we just reuse what we had before?
- */
- if (pitch != last_pitch || n > last_n || volume != last_volume)
- {
- last_pitch = pitch;
- last_n = n;
- last_volume = volume;
-
- dt = 2. * 3.14159 / cycle; /* sine scale factor */
-
-/* Ramp up; begin with silence */
-
- for (i = 0; i < RAMP; i++)
- {
- soundbuf[i] = ASCALE * ((float) i / RAMP) * (volume / 100.)
- * sin (i * dt);
- }
-
-/* Mesa top */
- for (i = RAMP; i < first_len; i++)
- {
- soundbuf[i] = ASCALE * 1. * (volume / 100.) * sin (i * dt);
- }
-
-/* Ramp down; end with silence */
- for (i = 0; i < down_len; i++)
- {
- ramp_down[i] = ASCALE * (1. - (float) (i + 1) / down_len)
- * (volume / 100.) * sin (i * dt);
- }
- }
- writeSound(outPort, soundbuf, first_len);
- writeSound(outPort, ramp_down, down_len);
- }
-
- return 0;
-}
-
-
-int
-BeepWait ()
-{
- while (ALgetfilled(outPort) > 0)
- sginap(1); /* wait 1/CLK_TCK seconds (1/100th second on my machine) */
- return 0;
-}
-
-
-int
-BeepCleanup ()
-{
- ALcloseport(outPort);
- return 0;
-}
-
-
-int
-BeepResume ()
-{
- return BeepInit();
-}
+++ /dev/null
-/*
- * If the audio library or audio include files are missing, you need
- * to get /usr/demo/SOUND off the Sun OS tapes or CD.
- *
- * If FULLVOLUME is defined this routine will turn your audio device up to
- * full volume; it will not attempt to reset the current speaker / jack choice.
- */
-
-/* beepSun.c -- seligman 6/92 */
-
-/*
--- Implementation of beep.h for Sun.
--- Rick to Joe to Scott to Joe.
-*/
-
-/* Date: Fri, 2 Aug 91 08:26:08 PDT */
-/* From: rick@st.unocal.com (Richard Ottolini) */
-
-/* Revised: Joe Dellinger */
-/* Sat Nov 28 02:30:32 HST 1992 */
-
-/* Revised: Brian Suggs (fixed the "annoying click" bug) */
-/* Fri Sep 16 12:29:13 PDT 1994 */
-
-#include "beep.h"
-#include <sun/audioio.h>
-#include </usr/demo/SOUND/multimedia/libaudio.h>
-#include </usr/demo/SOUND/multimedia/ulaw2linear.h>
-#include <stropts.h>
-#include <math.h>
-#include <fcntl.h>
-
-
-#define RATE (8000) /* 8 K samples = 1 second */
-#define RAMP (RATE * 5 / 1000) /* 5 millisecond ramp */
-#define MAXTIME (2 * RATE) /* 2 seconds max tone time */
-
-static int audio;
-static audio_info_t audio_stat;
-
-int
-BeepInit ()
-{
- audio = open ("/dev/audio", O_WRONLY);
-
- if (audio < 0)
- /* Uh oh! */
- return 1;
- else
- {
-#ifdef FULLVOLUME
- /*
- * Turn the speaker (or headphone, whichever the user has it set to)
- * up to full volume.
- */
- AUDIO_INITINFO(&audio_stat);
- audio_stat.play.gain = AUDIO_MAX_GAIN;
- ioctl (audio, AUDIO_SETINFO, &audio_stat);
-#endif
-
- return 0;
- }
-}
-
-
-int
-Beep (time, volume, pitch)
- int time, volume, pitch;
-{
-static unsigned char silence[MAXTIME];
-static unsigned char soundbuf[MAXTIME - RAMP];
-static unsigned char ramp_down[RAMP];
-static int last_pitch = -1, last_n = -1, last_volume = -1;
-static int first_time = 1;
-
-int i, n, first_len, down_len, cycle;
-double dt;
-
-/*
- * Initialize the sound of silence
- */
- if (first_time == 1)
- {
- for (i = 0; i < MAXTIME; i++)
- silence[i] = audio_l2u (0);
- first_time = 0;
- }
-
-
-/*
- * Finagle the number of samples
- */
- n = (time / 1000.) * RATE; /* Number samples in tone time */
- n = n < MAXTIME ? n : MAXTIME; /* clip to buffer size */
- n = n < 2 * RAMP ? 2 * RAMP : n; /* leave room for ramps */
-
-/*
- * Catch stupidity
- */
- if (pitch <= 0)
- volume = 0;
-
-
- if (volume <= 0)
- {
- write (audio, silence, n);
- }
- else
- {
-/*
- * clip to Nyquist
- * (Of course this means that if you ask for too high a frequency you
- * just get silence, since you sample all the zero-crossings of the
- * sine wave.)
- */
- pitch = pitch < RATE / 2 ? pitch : RATE / 2;
- cycle = ((RATE + 1.e-6) / pitch); /* samples per cycle */
-
- if (cycle > MAXTIME / 2)
- cycle = MAXTIME / 2;
-
- /* round down length of (rampup + mesa top) to integral cycle */
- first_len = ((n - RAMP) / cycle) * cycle;
- if (first_len < cycle)
- first_len = cycle;
- if (first_len > MAXTIME - RAMP)
- first_len = MAXTIME - RAMP;
-
- /* round down length of (rampdown) to integral cycle */
- down_len = ((RAMP) / cycle) * cycle;
- if (down_len < cycle)
- down_len = cycle;
- if (down_len > RAMP)
- down_len = RAMP;
-
-/*
- * Can we just reuse what we had before?
- */
- if (pitch != last_pitch || n > last_n || volume != last_volume)
- {
- last_pitch = pitch;
- last_n = n;
- last_volume = volume;
-
- dt = 2. * M_PI / cycle; /* sine scale factor */
-
-/* Ramp up; begin with silence */
-
- for (i = 0; i < RAMP; i++)
- {
- soundbuf[i] = audio_l2u (audio_d2l (
- ((float) i / RAMP) * (volume / 100.) * sin (i * dt)
- ));
- }
-
-/* Mesa top */
- for (i = RAMP; i < first_len; i++)
- {
- soundbuf[i] = audio_l2u (audio_d2l (
- 1. * (volume / 100.) * sin (i * dt)
- ));
- }
-
-/* Ramp down; end with silence */
- for (i = 0; i < down_len; i++)
- {
- ramp_down[i] = audio_l2u (audio_d2l (
- (1. - (float) (i + 1) / down_len) * (volume / 100.) * sin (i * dt)
- ));
- }
- }
-
- write (audio, soundbuf, first_len);
- write (audio, ramp_down, down_len);
- }
-
- return 0;
-}
-
-
-int
-BeepWait ()
-{
- ioctl (audio, AUDIO_DRAIN);
- return 0;
-}
-
-
-int
-BeepCleanup ()
-{
- return 0;
-}
-
-
-int
-BeepResume ()
-{
- return 0;
-}
projects / morse-classic.git / commitdiff