Changeset 152 for sbliveos2/trunk/lib32/sound.c

Timestamp:

Jul 17, 2000, 8:37:33 PM (25 years ago)

Author:

sandervl

Message:

misc updates

File:

• sbliveos2/trunk/lib32/sound.c (modified) (1 diff)

sbliveos2/trunk/lib32/sound.c

@@ -451 +451 @@
 //******************************************************************************
 //******************************************************************************
+ULONG OSS32_StreamGetSpace(ULONG streamtype, ULONG streamid)
+{
+ struct inode   ossinode;
+ struct file    ossfile;
+ struct dentry  ossdentry;
+ ULONG          ossid = streamtype & OSS_IDMASK;
+ audio_buf_info info;
+ char NEAR     *tmpbuf;
+ ULONG          cmd;
+ int            transferred;
+
+  ossinode.i_rdev = ossid;
+  ossfile.private_data = (void *)streamid;
+  ossfile.f_flags = 0;
+  ossfile.f_dentry = &ossdentry;
+  ossdentry.d_inode = &ossinode;
+
+  switch(streamtype) {
+  case OSS_STREAM_WAVEOUT:
+        ossfile.f_mode = FMODE_WRITE;
+        cmd = SNDCTL_DSP_GETOSPACE;
+        break;
+  case OSS_STREAM_WAVEIN:
+        ossfile.f_mode = FMODE_READ;
+        cmd = SNDCTL_DSP_GETISPACE;
+        break;
+  case OSS_STREAM_MIDIOUT:
+        ossfile.f_mode = FMODE_WRITE;
+        break;
+  case OSS_STREAM_MIDIIN:
+        ossfile.f_mode = FMODE_READ;
+        break;
+  }
+
+  if(!oss_devices[ossid].write || !oss_devices[ossid].read || !oss_devices[ossid].ioctl) {
+        return 0;
+  }
+  //check how much room is left in the circular dma buffer
+#ifdef KEE
+  tmpbuf = (char NEAR *)&info;
+#else
+  tmpbuf = (char NEAR *)__StackToFlat((ULONG)&info);
+#endif
+  if(oss_devices[ossid].ioctl(&ossinode, &ossfile, cmd, (ULONG)tmpbuf)) {
+        return 0;
+  }
+  return info.bytes;
+}
+//******************************************************************************
+//******************************************************************************
 ULONG OSS32_SetVolume(ULONG streamtype, ULONG streamid, ULONG cmd, ULONG volume)
 {