1 files changed, 252 insertions, 0 deletions
diff --git a/kscd/kscdmagic/sound.cpp b/kscd/kscdmagic/sound.cpp
new file mode 100644
index 00000000..0bcb8d8d
--- /dev/null
+++ b/kscd/kscdmagic/sound.cpp
@@ -0,0 +1,252 @@
+/* Synaesthesia - program to display sound graphically
+   Copyright (C) 1997  Paul Francis Harrison
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms of the GNU General Public License as published by the
+  Free Software Foundation; either version 2 of the License, or (at your
+  option) any later version.
+
+  This program is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License along
+  with this program; if not, write to the Free Software Foundation, Inc.,
+  59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+  The author may be contacted at:
+    pfh@yoyo.cc.monash.edu.au
+  or
+    27 Bond St., Mt. Waverley, 3149, Melbourne, Australia
+*/
+
+#if defined(__linux__) || defined(__svr4__)
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/sem.h>
+#include <sys/shm.h>
+#include <sys/wait.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <signal.h>
+
+#if defined (__linux__)
+#include <linux/soundcard.h>
+#ifndef __GNUC__
+#define __GNUC__ 1
+#endif
+#undef __STRICT_ANSI__
+#include <asm/types.h>
+#include <linux/cdrom.h>
+#endif
+
+#if defined (__svr4__)
+#include <sys/soundcard.h>
+#endif
+
+
+// who knows when we'll need that...
+#if defined (FreeBSD)
+#include <sys/soundcard.h>
+#include <sys/cdio.h>
+#define CDROM_LEADOUT 0xAA
+#define CD_FRAMES 75 /* frames per second */
+#define CDROM_DATA_TRACK 0x4
+#endif
+
+#include <time.h>
+
+#include <stdlib.h>
+#include <math.h>
+#include <string.h>
+#include "syna.h"
+#include "magicconf.h"
+
+
+/* Sound Recording ================================================= */
+
+#ifdef LITTLEENDIAN
+#define SOUNDFORMAT AFMT_S16_LE
+#else
+#define SOUNDFORMAT AFMT_S16_BE
+#endif
+
+//If kernel starts running out of sound memory playing mp3s, this could
+//be the problem. OTOH if it is too small, it will start ticking on slow
+//computers
+#define MAXWINDOWSIZE 32
+
+static SoundSource source;
+static int inFrequency, downFactor, windowSize, pipeIn, device;
+static short *dataIn;
+static char *mixer;
+
+void 
+openSound(SoundSource source, int inFrequency, const char *dspName, 
+               char *mixerName) 
+{
+  ::source = source;
+  ::inFrequency = inFrequency; 
+  ::windowSize = 1;
+  mixer = mixerName;
+  downFactor = inFrequency / frequency; 
+  if (downFactor <= 0)
+    downFactor = 1;
+
+  int format, stereo, fragment, fqc;
+
+#ifdef __FreeBSD__
+  attempt(device = open(dspName,O_WRONLY),"opening dsp device",true);
+  format = SOUNDFORMAT;
+  attempt(ioctl(device,SNDCTL_DSP_SETFMT,&format),"setting format",true);
+  if (format != SOUNDFORMAT) error("setting format (2)");
+  close(device);
+#endif
+  if (source == SourcePipe)
+    attempt(device = open(dspName,O_WRONLY),"opening dsp device",true);
+  else
+    attempt(device = open(dspName,O_RDONLY),"opening dsp device",true);
+    
+  //Probably not needed
+  //attemptNoDie(ioctl(device,SNDCTL_DSP_RESET,0),"reseting dsp");
+  format = SOUNDFORMAT;
+  fqc = (source == SourcePipe ? inFrequency : frequency);
+  stereo = 1;
+  
+  //int logWindowSize = -1, tmp = windowSize*downFactor;
+  //while(tmp) {
+  //  tmp /= 2;
+  //  logWindowSize++;
+  //}
+
+  if (source == SourcePipe)
+    //fragment = 0x00020000 + (m-overlap+1)+logWindowSize;
+    fragment = 0x00010000*(MAXWINDOWSIZE+1) + (m-overlap+1);//+logWindowSize;
+                                                 //Soundcard should read in windowSize 
+                                                 // blocks of sound before blocking
+  else
+    //fragment = 0x00020000 + (m-overlap+1); //2 fragments of size 2*(2^(m-overlap+1)) bytes
+  
+  //Added extra fragments to allow recording overrun (9/7/98)
+    fragment = 0x00080000 + (m-overlap+1); //8 fragments of size 2*(2^(m-overlap+1)) bytes
+  
+  
+  
+  
+  //Was 0x00010000 + m; 
+
+  attemptNoDie(ioctl(device,SNDCTL_DSP_SETFRAGMENT,&fragment),"setting fragment",true);
+#ifndef __FreeBSD__
+  attempt(ioctl(device,SNDCTL_DSP_SETFMT,&format),"setting format",true);
+  if (format != SOUNDFORMAT) error("setting format (2)");
+#endif
+  attempt(ioctl(device,SNDCTL_DSP_STEREO,&stereo),"setting stereo",true);
+  attemptNoDie(ioctl(device,SNDCTL_DSP_SPEED,&fqc),"setting frequency",true);
+   
+  data = new short[n*2];  
+
+  if (source == SourcePipe) {
+    dataIn = new short[n*2*downFactor*MAXWINDOWSIZE];
+    memset(dataIn,0,n*4*downFactor*MAXWINDOWSIZE);
+    pipeIn = dup(0);
+    close(0);
+  }
+}
+
+void closeSound() {
+  delete data;
+  if (source == SourcePipe) {
+    delete dataIn;
+    close(pipeIn);
+  }
+  close(device);
+}
+
+int readWholeBlock(int pipe,char *dest,int length) {
+  while(length > 0) {
+    int result = read(pipe,dest,length);
+    if (result < 1)
+      return -1;
+    dest += result;
+    length -= result;
+  }
+  return 0;
+}
+
+int getNextFragment(void) {
+  if (source == SourcePipe) {
+    static int lastTime = 0;
+    int nowTime;
+    timeval timeVal1, timeVal2;
+
+    gettimeofday(&timeVal1,0);
+    write(device, (char*)dataIn, n*4*downFactor*windowSize); 
+    gettimeofday(&timeVal2,0);
+
+    nowTime = timeVal1.tv_usec + timeVal1.tv_sec * 1000000;
+    if (nowTime > lastTime) {
+      int optimumFrags =
+         int(double(nowTime-lastTime)*inFrequency/1000000.0/(n*downFactor))
+	     +1;
+      if (optimumFrags > MAXWINDOWSIZE)
+        optimumFrags = MAXWINDOWSIZE;
+
+      windowSize = optimumFrags;
+    }
+    
+    lastTime = timeVal2.tv_usec + timeVal2.tv_sec * 1000000;
+  
+    if (readWholeBlock(pipeIn, ((char*)dataIn), n*4*downFactor*windowSize) == -1)
+      return -1;
+    
+    int i,j;
+    for(i=0,j=0;i<n;i++,j+=downFactor) 
+      ((long*)data)[i] = ((long*)dataIn)[j]; 
+  } else {
+    int i;
+    count_info info;
+    if (-1 == ioctl(device,SNDCTL_DSP_GETIPTR,&info))
+      info.blocks = 1;
+    if (info.blocks > 8 || info.blocks < 1) /* Sanity check */
+      info.blocks = 1;
+
+    for(i=0;i<info.blocks;i++) {
+      if (recSize != n)
+        memmove((char*)data,(char*)data+recSize*4,(n-recSize)*4);
+
+      attemptNoDie(
+        readWholeBlock(device,(char*)data+n*4-recSize*4, recSize*4),
+	"reading from soundcard", true);
+    }
+  }
+  return 0;
+}
+
+#else
+
+// generic dummy implementation
+
+#include "syna.h"
+
+int getNextFragment(void) {
+    return 0;
+}
+
+void openSound(SoundSource source, int inFrequency, const char *dspName,
+               char *mixerName)
+{
+}
+
+void closeSound()
+{
+}
+
+#endif // linux || svr4
+