pcsxr-1.9.92

1 files changed, 159 insertions, 0 deletions

diff --git a/plugins/dfsound/oss.c b/plugins/dfsound/oss.c
new file mode 100644
index 0000000..f4dd215
--- /dev/null
+++ b/plugins/dfsound/oss.c
@@ -0,0 +1,159 @@
+/***************************************************************************
+                            oss.c  -  description
+                             -------------------
+    begin                : Wed May 15 2002
+    copyright            : (C) 2002 by Pete Bernert
+    email                : BlackDove@addcom.de
+ ***************************************************************************/
+/***************************************************************************
+ *                                                                         *
+ *   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. See also the license.txt file for *
+ *   additional informations.                                              *
+ *                                                                         *
+ ***************************************************************************/
+
+#include "stdafx.h"
+
+#define _IN_OSS
+
+#include "externals.h"
+
+////////////////////////////////////////////////////////////////////////
+// oss globals
+////////////////////////////////////////////////////////////////////////
+
+#define OSS_MODE_STEREO	    1
+#define OSS_MODE_MONO       0
+
+#define OSS_SPEED_44100     44100
+
+static int oss_audio_fd = -1;
+extern int errno;
+
+////////////////////////////////////////////////////////////////////////
+// SETUP SOUND
+////////////////////////////////////////////////////////////////////////
+
+void SetupSound(void)
+{
+ int pspeed=44100;
+ int pstereo;
+ int format;
+ int fragsize = 0;
+ int myfrag;
+ int oss_speed, oss_stereo;
+
+ if(iDisStereo) pstereo=OSS_MODE_MONO;
+ else           pstereo=OSS_MODE_STEREO;
+
+ oss_speed = pspeed;
+ oss_stereo = pstereo;
+
+ if((oss_audio_fd=open("/dev/dsp",O_WRONLY,0))==-1)
+  {
+   printf("Sound device not available!\n");
+   return;
+  }
+
+ if(ioctl(oss_audio_fd,SNDCTL_DSP_RESET,0)==-1)
+  {
+   printf("Sound reset failed\n");
+   return;
+  }
+
+ // we use 64 fragments with 1024 bytes each
+
+ fragsize=10;
+ myfrag=(63<<16)|fragsize;
+
+ if(ioctl(oss_audio_fd,SNDCTL_DSP_SETFRAGMENT,&myfrag)==-1)
+  {
+   printf("Sound set fragment failed!\n");
+   return;        
+  }
+
+ format = AFMT_S16_NE;
+
+ if(ioctl(oss_audio_fd,SNDCTL_DSP_SETFMT,&format) == -1)
+  {
+   printf("Sound format not supported!\n");
+   return;
+  }
+
+ if(format!=AFMT_S16_NE)
+  {
+   printf("Sound format not supported!\n");
+   return;
+  }
+
+ if(ioctl(oss_audio_fd,SNDCTL_DSP_STEREO,&oss_stereo)==-1)
+  {
+   printf("Stereo mode not supported!\n");
+   return;
+  }
+
+ if(oss_stereo!=1)
+  {
+   iDisStereo=1;
+  }
+
+ if(ioctl(oss_audio_fd,SNDCTL_DSP_SPEED,&oss_speed)==-1)
+  {
+   printf("Sound frequency not supported\n");
+   return;
+  }
+
+ if(oss_speed!=pspeed)
+  {
+   printf("Sound frequency not supported\n");
+   return;
+  }
+}
+
+////////////////////////////////////////////////////////////////////////
+// REMOVE SOUND
+////////////////////////////////////////////////////////////////////////
+
+void RemoveSound(void)
+{
+ if(oss_audio_fd != -1 )
+  {
+   close(oss_audio_fd);
+   oss_audio_fd = -1;
+  }
+}
+
+////////////////////////////////////////////////////////////////////////
+// GET BYTES BUFFERED
+////////////////////////////////////////////////////////////////////////
+
+unsigned long SoundGetBytesBuffered(void)
+{
+ audio_buf_info info;
+ unsigned long l;
+
+ if(oss_audio_fd == -1) return SOUNDSIZE;
+ if(ioctl(oss_audio_fd,SNDCTL_DSP_GETOSPACE,&info)==-1)
+  l=0;
+ else
+  {
+   if(info.fragments<(info.fragstotal>>1))             // can we write in at least the half of fragments?
+        l=SOUNDSIZE;                                   // -> no? wait
+   else l=0;                                           // -> else go on
+  }
+
+ return l;
+}
+
+////////////////////////////////////////////////////////////////////////
+// FEED SOUND DATA
+////////////////////////////////////////////////////////////////////////
+
+void SoundFeedStreamData(unsigned char* pSound,long lBytes)
+{
+ if(oss_audio_fd == -1) return;
+ write(oss_audio_fd,pSound,lBytes);
+}