1 files changed, 100 insertions, 0 deletions
diff --git a/mpeglib/lib/tplay/au.cpp b/mpeglib/lib/tplay/au.cpp
new file mode 100644
index 00000000..8880515f
--- /dev/null
+++ b/mpeglib/lib/tplay/au.cpp
@@ -0,0 +1,100 @@
+/* 
+ * tplay - buffered audio player
+ *
+ * (c) 1997 ilkka karvinen <ik@iki.fi>
+ *
+ * Copyright under the GNU GENERAL PUBLIC LICENSE
+ *   (see the file COPYING in this directory)
+ *
+ * 
+ *   SunOS audio file header functions.
+ *   Reference: http://www.wotsit.org
+ */
+
+#include "tplayfunctions.h"
+
+/* read_au returns zero if Sun audio file format is found. */
+int read_au(struct info_struct* info,char * buffer) {
+   DWORD magic, start, end, encoding, speed, channels;
+   int bits;
+
+
+   /* If '.snd'-header exits, this should be an au-file */
+   magic = read_big_endian_long(buffer);
+   if (magic != SUN_MAGIC)
+      return (1);
+
+   start = read_big_endian_long(buffer + 0x04);
+   end = read_big_endian_long(buffer + 0x08);
+   encoding = read_big_endian_long(buffer + 0x0C);
+   speed = read_big_endian_long(buffer + 0x10);
+   channels = read_big_endian_long(buffer + 0x14);
+
+#ifdef DEBUG
+   printf("Sun audio file.\nspeed: %ld, start: %ld, end: %ld, \
+encoding: %X, channels: %ld\n",
+	  speed, start, end, encoding, channels);
+   fflush(stdout);
+#endif
+
+   bits = DEFAULT_BITS;
+   switch (encoding) {
+   case 1:
+      die("8-bit ISDN u-law Sun audio file not supported");
+      break;
+   case 2:
+      bits = 8;
+      break;
+   case 3:
+      bits = 16;
+      break;
+   case 4:
+      die("24-bit linear PCM Sun audio file not supported");
+      break;
+   case 5:
+      die("32-bit linear PCM Sun audio file not supported");
+      break;
+   case 6:
+      die("32-bit IEEE floating point Sun audio file not supported");
+      break;
+   case 7:
+      die("64-bit IEEE floating point Sun audio file not supported");
+      break;
+   case 23:
+      die("8-bit ISDN u-law compressed(G.721 ADPCM) Sun audio file \
+not supported");
+      break;
+   default:
+      errdie("Unknown Sun audio file");
+      break;
+   }
+
+   info->filetype = SUN_FILE;
+
+   /* Set audio parameters */
+   info->speed = (int) speed;
+   info->bits = bits;
+   info->channels = (int) channels;
+
+   if (info->verbose) {
+      printf("Sun audio file: %ld samples/s, %d bits, %d channel(s).\n",
+	     info->speed, info->bits, info->channels);
+      /*
+      if ((comment_size = start - SUN_HDRSIZE) > 0) {
+	 printf("Header info: ");
+	 for (i = 0; i < comment_size; i++)
+	    nice_fputc((int) buffer[SUN_HDRSIZE + i], stdout);
+	 printf("\n");
+      }
+      */
+   }
+
+   /* Move data to start from the beginning of the buffer.            */
+   /* This is to ensure the correct behaviour of rounding when 16bits */
+   /* and/or stereo sample is to be played.                           */
+   memmove(buffer, buffer + (start + 1), info->blocksize - start - 1);
+
+   info->headerskip = (int) (start + 1);
+
+   return (0);
+}