Add patch to work with both audio drivers

Submitted by: bmah@CA.Sandia.GOV (Bruce A. Mah)
1998-06-16 16:06:32 +00:00
parent 2078d1ffd4
commit 6c9094ba21
1 changed files with 171 additions and 0 deletions
--- a/audio/timidity/files/patch-ae
+++ b/audio/timidity/files/patch-ae
@@ -0,0 +1,171 @@
+*** linux_a.c.orig	Mon May 20 17:09:46 1996
+--- linux_a.c	Tue Jun 16 19:59:01 1998
+***************
+*** 71,82 ****
+     then 8-bit unsigned if it fails. If you have a sound device that
+     can't handle either, let me know. */
+  
+  static int open_output(void)
+  {
+    int fd, tmp, i, warnings=0;
+    
+    /* Open the audio device */
+!   fd=open(dpm.name, O_RDWR | O_NDELAY);
+    if (fd<0)
+      {
+        ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "%s: %s",
+--- 71,85 ----
+     then 8-bit unsigned if it fails. If you have a sound device that
+     can't handle either, let me know. */
+  
+ /* Flag for Luigi Rizzo new sound driver (as opposed to VoxWare) */
+ static luigi_driver = 0;
+ 
+  static int open_output(void)
+  {
+    int fd, tmp, i, warnings=0;
+    
+    /* Open the audio device */
+!   fd=open(dpm.name, O_RDWR);
+    if (fd<0)
+      {
+        ctl->cmsg(CMSG_ERROR, VERB_NORMAL, "%s: %s",
+***************
+*** 84,89 ****
+--- 87,109 ----
+        return -1;
+      }
+  
+   /* Figure out if we're running with the Luigi driver or
+      the original VoxWare driver, with code based on dburr/luigi
+      in ports/5607.  It'd be great if we could do this before
+      opening the audio device, but oh well... */
+ #if defined(AIOGFMT)	/* only defined in Luigi driver */
+   {
+     snd_chan_param s;
+     int i;
+     i = ioctl(fd, AIOGFMT, &s);
+     if (i != -1)
+       luigi_driver = 1;
+   }
+ #endif defined (AIOGFMT)
+ 
+   ctl->cmsg(CMSG_INFO, VERB_VERBOSE, "Using %s sound driver",
+ 	    luigi_driver ? "luigi" : "VoxWare");
+ 
+    /* They can't mean these */
+    dpm.encoding &= ~(PE_ULAW|PE_BYTESWAP);
+  
+***************
+*** 92,97 ****
+--- 112,140 ----
+       the other one. */
+  
+    i=tmp=(dpm.encoding & PE_16BIT) ? 16 : 8;
+   if (luigi_driver)
+     {
+       if (dpm.encoding & PE_16BIT) {
+ 	int fmt = AFMT_S16_LE ;
+ 
+ 	if (ioctl(fd, SNDCTL_DSP_SETFMT, &fmt) < 0 || fmt != AFMT_S16_LE) {
+ 	    fmt = AFMT_U8 ;
+ 	    if (ioctl(fd, SNDCTL_DSP_SETFMT, &fmt) < 0 || fmt != AFMT_U8) {
+ 		ctl->cmsg(CMSG_ERROR, VERB_NORMAL,
+ 		      "%s doesn't support 16- or 8-bit sample width",
+ 		      dpm.name);
+ 		close(fd);
+ 		return -1;
+ 	    }
+ 	    ctl->cmsg(CMSG_WARNING, VERB_VERBOSE,
+ 		  "Sample width adjusted to %d bits", tmp);
+ 	    dpm.encoding ^= PE_16BIT;
+ 	    warnings = 1;
+ 	}
+       }
+     }
+   else
+     {
+    if (ioctl(fd, SNDCTL_DSP_SAMPLESIZE, &tmp)<0 || tmp!=i)
+      {
+        /* Try the other one */
+***************
+*** 109,114 ****
+--- 152,158 ----
+        dpm.encoding ^= PE_16BIT;
+        warnings=1;
+      }
+     }
+    if (dpm.encoding & PE_16BIT)
+      dpm.encoding |= PE_SIGNED;
+    else
+***************
+*** 163,168 ****
+--- 207,214 ----
+    /* Set buffer fragments (in extra_param[0]) */
+    
+    tmp=AUDIO_BUFFER_BITS;
+   if (luigi_driver)
+     tmp += 2;
+    if (!(dpm.encoding & PE_MONO)) tmp++;
+    if (dpm.encoding & PE_16BIT) tmp++;
+    tmp |= (dpm.extra_param[0]<<16);
+***************
+*** 189,215 ****
+    return warnings;
+  }
+  
+  static void output_data(int32 *buf, int32 count)
+  {
+!   if (!(dpm.encoding & PE_MONO)) count*=2; /* Stereo samples */
+    
+!   if (dpm.encoding & PE_16BIT)
+!     {
+        /* Convert data to signed 16-bit PCM */
+        s32tos16(buf, count);
+!       
+!       /* Write the data out. Linux likes to give an EINTR if you suspend
+! 	 a program while waiting on a write, so we may need to retry. */
+!       while ((-1==write(dpm.fd, buf, count * 2)) && errno==EINTR)
+! 	;
+!     }
+!   else
+!     {
+        /* Convert to 8-bit unsigned and write out. */
+        s32tou8(buf, count);
+!       
+!       while ((-1==write(dpm.fd, buf, count)) && errno==EINTR)
+! 	;
+      }
+  }
+  
+--- 235,264 ----
+    return warnings;
+  }
+  
+ /* output_data comes from Luigi's linux_a.c.  This version seems to allow
+    for partial writes to the sound device, where as the original version
+    doesn't. */
+  static void output_data(int32 *buf, int32 count)
+  {
+!   char *p;
+!   int res, l;
+    
+!   if (!(dpm.encoding & PE_MONO))
+!     count *= 2;		/* Stereo samples */
+!   
+!   if (dpm.encoding & PE_16BIT) {
+        /* Convert data to signed 16-bit PCM */
+        s32tos16(buf, count);
+!     res = count*2;
+!   } else {
+        /* Convert to 8-bit unsigned and write out. */
+        s32tou8(buf, count);
+!     res = count ;
+!   }
+!   for (p = (char *) buf ; res > 0 ; res -= l ) {
+!     l = write(dpm.fd, p, res);
+!     if (l < 0) return ;
+!     p += l ;
+      }
+  }
+