Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 354 insertions, 0 deletions

diff --git a/libkmid/fmout.cc b/libkmid/fmout.cc
new file mode 100644
index 000000000..c4af93dcd
--- /dev/null
+++ b/libkmid/fmout.cc
@@ -0,0 +1,354 @@
+/**************************************************************************
+
+    fmout.cc   - class fmOut which handles the /dev/sequencer device
+			for fm synths
+    This file is part of LibKMid 0.9.5
+    Copyright (C) 1998,99,2000  Antonio Larrosa Jimenez
+    LibKMid's homepage : http://www.arrakis.es/~rlarrosa/libkmid.html
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library 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
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+
+    Send comments and bug fixes to Antonio Larrosa <larrosa@kde.org>
+
+***************************************************************************/
+#include "fmout.h"
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include "sndcard.h"
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/param.h>
+#include <stdlib.h>
+#include <limits.h>
+#include "midispec.h"
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+SEQ_USE_EXTBUF();
+
+FMOut::FMOut( int d, int total )
+{
+  seqfd = -1;
+  devicetype = KMID_FM;
+  device = d;
+  _ok = 1;
+  // Put opl=3 for opl/3 (better quality/ 6 voices)
+  //  or opl=2 for fm output (less quality/ 18 voices, which is better imho) :
+  opl = 2;
+  // But be aware that opl=3 is not intended to be fully supported by now
+
+  nvoices = total;
+  vm = new VoiceManager (nvoices);
+}
+
+FMOut::~FMOut()
+{
+  closeDev();
+  delete vm;
+  if (deleteFMPatchesDirectory)
+  {
+    free((char *)FMPatchesDirectory);
+    deleteFMPatchesDirectory = 0;
+    FMPatchesDirectory="/etc";
+  }
+}
+
+void FMOut::openDev (int sqfd)
+{
+#ifdef HAVE_OSS_SUPPORT
+  _ok=1;
+  seqfd = sqfd;
+  //vm->clearLists();
+  if ( seqfd == -1 )
+  {
+    printfdebug("ERROR: Could not open /dev/sequencer\n");
+    return;
+  }
+
+  loadFMPatches();
+#endif
+
+}
+
+void FMOut::closeDev (void)
+{
+  if (!ok()) return;
+  vm->clearLists();
+  //if (seqfd>=0) close(seqfd);
+  seqfd = -1;
+}
+
+void FMOut::initDev (void)
+{
+#ifdef HAVE_OSS_SUPPORT
+  int chn;
+  if (!ok()) return;
+  uchar gm_reset[5]={0x7e, 0x7f, 0x09, 0x01, 0xf7};
+  sysex(gm_reset, sizeof(gm_reset));
+  for (chn=0;chn<16;chn++)
+  {
+    chnmute[chn]=0;
+    chnPatchChange(chn,0);
+    chnPressure(chn,127);
+    chnPitchBender(chn, 0x00, 0x40);
+    chnController(chn, CTL_MAIN_VOLUME,127);
+    chnController(chn, CTL_EXT_EFF_DEPTH, 0);
+    chnController(chn, CTL_CHORUS_DEPTH, 0);
+    chnController(chn, 0x4a, 127);
+  }
+
+  if (opl==3) ioctl(seqfd, SNDCTL_FM_4OP_ENABLE, &device);
+  SEQ_VOLUME_MODE(device,VOL_METHOD_LINEAR);
+
+  for (int i = 0; i < nvoices; i++)
+  {
+    SEQ_CONTROL(device, i, SEQ_VOLMODE, VOL_METHOD_LINEAR);
+    SEQ_STOP_NOTE(device, i, vm->note(i), 64);
+  }
+#endif
+}
+
+void FMOut::loadFMPatches(void)
+{
+#ifdef HAVE_OSS_SUPPORT
+  char patchesfile[PATH_MAX];
+  char drumsfile[PATH_MAX];
+  int size;
+  struct sbi_instrument instr;
+  char tmp[60];
+  int i,j;
+  for ( i=0; i<256; i++ )
+    patchloaded[i] = 0;
+  int stereoeffect=rand()%3;
+  FILE *fh;
+  int datasize;
+
+  if (opl==3)
+  {
+    snprintf(patchesfile, PATH_MAX, "%s/std.o3",FMPatchesDirectory);
+    size=60;
+  }
+  else
+  {
+    snprintf(patchesfile, PATH_MAX, "%s/std.sb",FMPatchesDirectory);
+    size=52;
+  }
+  fh=fopen(patchesfile,"rb");
+  if (fh==NULL) return;
+
+  for (i=0;i<128;i++)
+  {
+    fread(tmp,size,1,fh);
+    patchloaded[i]=1;
+    instr.key = ((strncmp(tmp, "4OP", 3) == 0))? OPL3_PATCH : FM_PATCH;
+    datasize = (strncmp(tmp, "4OP", 3) == 0)? 22 : 11;
+    instr.device=device;
+    instr.channel = i;
+    // Let's get some stereo effect ...
+    tmp[46] = (tmp[46] & 0xcf) | ((++stereoeffect)<<4);
+    stereoeffect=stereoeffect%3;
+    for (j=0; j<22; j++)
+      instr.operators[j] = tmp[j+36];
+    SEQ_WRPATCH(&instr,sizeof(instr));
+  }
+  fclose(fh);
+
+  if (opl==3)
+  {
+    snprintf(drumsfile, PATH_MAX, "%s/drums.o3",FMPatchesDirectory);
+  }
+  else
+  {
+    snprintf(drumsfile, PATH_MAX, "%s/drums.sb",FMPatchesDirectory);
+  }
+
+  fh=fopen(drumsfile,"rb");
+  if (fh==NULL) return;
+
+  for (i=128;i<175;i++)
+  {
+    fread(tmp,size,1,fh);
+    patchloaded[i]=1;
+    instr.key = (strncmp(tmp, "4OP", 3) == 0)? OPL3_PATCH : FM_PATCH;
+    datasize = (strncmp(tmp, "4OP", 3) == 0)? 22 : 11;
+    instr.device=device;
+    instr.channel = i;
+    // Let's get some stereo effect ...
+    tmp[46] = (tmp[46] & 0xcf) | ((++stereoeffect)<<4);
+    stereoeffect=stereoeffect%3;
+    for (j=0; j<22; j++)
+      instr.operators[j] = tmp[j+36];
+    SEQ_WRPATCH(&instr,sizeof(instr));
+  }
+  fclose(fh);
+
+#ifdef FMOUTDEBUG
+  printfdebug("Patches loaded\n");
+#endif
+#endif
+}
+
+int FMOut::patch(int p)
+{
+  if (patchloaded[p]==1) return p;
+#ifdef FMOUTDEBUG
+  printfdebug("Not loaded %d!\n",p);
+#endif
+  p=0;
+  while ((p<256)&&(patchloaded[p]==0)) p++;
+  return p;
+}
+
+void FMOut::noteOn  (uchar chn, uchar note, uchar vel)
+{
+  if (vel==0)
+  {
+    noteOff(chn,note,vel);
+  }
+  else
+  {
+    if (chn==PERCUSSION_CHANNEL)
+    {
+      if (patchloaded[note+128]==0) return;
+      else
+	if (patchloaded[chnpatch[chn]]==0) return;
+    }
+    int v=vm->allocateVoice(chn,note);
+    int p;
+    if (chn==PERCUSSION_CHANNEL)
+      SEQ_SET_PATCH(device,v ,p=patch(note+128))
+    else
+      SEQ_SET_PATCH(device,v ,p=map->patch(chn,chnpatch[chn]));
+    SEQ_BENDER(device, v, chnbender[chn]);
+
+    SEQ_START_NOTE(device, v, note, vel);
+    //    SEQ_CONTROL(device, v, CTL_MAIN_VOLUME, chncontroller[chn][CTL_MAIN_VOLUME]);
+
+    SEQ_CHN_PRESSURE(device, v , chnpressure[chn]);
+  }
+
+#ifdef FMOUTDEBUG
+  printfdebug("Note ON >\t chn : %d\tnote : %d\tvel: %d\n",chn,note,vel);
+#endif
+}
+
+void FMOut::noteOff (uchar chn, uchar note, uchar vel)
+{
+  int i;
+  vm->initSearch();
+  while ((i=vm->search(chn,note))!=-1)
+  {
+    SEQ_STOP_NOTE(device, i, note, vel);
+    vm->deallocateVoice(i);
+  }
+
+#ifdef FMOUTDEBUG
+  printfdebug("Note OFF >\t chn : %d\tnote : %d\tvel: %d\n",chn,note,vel);
+#endif
+}
+
+void FMOut::keyPressure (uchar chn, uchar note, uchar vel)
+{
+  int i;
+  vm->initSearch();
+  while ((i=vm->search(chn,note))!=-1)
+    SEQ_KEY_PRESSURE(device, i, note,vel);
+}
+
+void FMOut::chnPatchChange (uchar chn, uchar patch)
+{
+  if (chn==PERCUSSION_CHANNEL) return;
+  int i;
+  vm->initSearch();
+  while ((i=vm->search(chn))!=-1)
+    SEQ_SET_PATCH(device,i,map->patch(chn,patch));
+
+  chnpatch[chn]=patch;
+}
+
+void FMOut::chnPressure (uchar chn, uchar vel)
+{
+  int i;
+  vm->initSearch();
+  while ((i=vm->search(chn))!=-1)
+    SEQ_CHN_PRESSURE(device, i , vel);
+
+  chnpressure[chn]=vel;
+}
+
+void FMOut::chnPitchBender(uchar chn,uchar lsb, uchar msb)
+{
+  chnbender[chn]=((int)msb<<7) | (lsb & 0x7F);
+
+  int i;
+  vm->initSearch();
+  while ((i=vm->search(chn))!=-1)
+    SEQ_BENDER(device, i, chnbender[chn]);
+
+}
+
+void FMOut::chnController (uchar chn, uchar ctl, uchar v)
+{
+  if ((ctl==11)||(ctl==7))
+  {
+    v=(v*volumepercentage)/100;
+    if (v>127) v=127;
+  }
+  int i;
+  vm->initSearch();
+  while ((i=vm->search(chn))!=-1)
+    SEQ_CONTROL(device, i, ctl, v);
+
+  chncontroller[chn][ctl]=v;
+}
+
+void FMOut::sysex(uchar *, ulong )
+{
+
+}
+
+void FMOut::setFMPatchesDirectory(const char *dir)
+{
+  if ((dir==NULL)||(dir[0]==0)) return;
+  if (deleteFMPatchesDirectory)
+  	free((char *)FMPatchesDirectory);
+
+  FMPatchesDirectory = strdup(dir);
+
+  deleteFMPatchesDirectory=1;
+}
+
+void FMOut::setVolumePercentage    ( int i )
+{
+#ifdef HAVE_OSS_SUPPORT
+  int fd=open("/dev/mixer0",O_RDWR,0);
+  if (fd==-1) return;
+  int a=i*255/100;
+  if (a>255) a=255;
+  a=(a<<8) | a;
+  if (ioctl(fd,MIXER_WRITE(SOUND_MIXER_SYNTH),&a) == -1)
+    printfdebug("ERROR writing to mixer\n");
+  close(fd);
+#endif
+  volumepercentage=i;
+}
+
+
+const char *FMOut::FMPatchesDirectory = "/etc";
+int FMOut::deleteFMPatchesDirectory = 0;