Imported Upstream version 4.2-build2006upstream/4.2-build2006upstream

1 files changed, 200 insertions, 0 deletions

diff --git a/lib/libOSSlib/libmain.c b/lib/libOSSlib/libmain.c
new file mode 100644
index 0000000..d295874
--- /dev/null
+++ b/lib/libOSSlib/libmain.c
@@ -0,0 +1,200 @@
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+
+#define OSSLIB
+#include "../../include/soundcard.h"
+
+int __seqfd = -1;
+static int initialized = 0;
+
+extern void _dump_midi (void);	/* From play_event.c */
+
+unsigned char *_seqbuf;
+int _seqbuflen = 0;
+int _seqbufptr = 0;
+
+int synth_types[64] = { 0 };
+
+#define ST_NONE		0
+#define ST_GUS		1
+#define ST_OPL		2
+
+int nrsynths = 0;
+
+extern void play_event (unsigned char *ev);
+
+void
+seqbuf_dump (void)
+{
+  int l = _seqbufptr;
+
+  unsigned char *ev = _seqbuf;
+
+  while (l >= 8)
+    {
+      play_event (ev);
+      l -= 8;
+      ev += 8;
+    }
+
+  _seqbufptr = 0;
+  _dump_midi ();
+}
+
+static int
+oss_init_lib (void)
+{
+  if (_seqbuflen < 32 || _seqbuflen > 2048)
+    _seqbuflen = 2048;
+
+  if ((_seqbuf = malloc (_seqbuflen)) == NULL)
+    return 3;
+
+  initialized = 1;
+  return 0;			/* OK */
+}
+
+int
+OSS_init (int userfd, int buflen)
+{
+  if (_seqbuflen || _seqbuflen || __seqfd != -1 || initialized)
+    {
+      fprintf (stderr, "libOSS: OSS_init called too late\n");
+      return 1;
+    }
+
+  __seqfd = userfd;
+
+  if (buflen < 32 || buflen > 2048)
+    {
+      fprintf (stderr, "libOSS: OSS_init called with invalid buflen\n");
+      return 2;
+    }
+
+  _seqbuflen = buflen;
+
+  return oss_init_lib ();
+}
+
+static void
+sanity_check (int fd, unsigned char *buf, int buflen)
+{
+  if (__seqfd != fd)
+    if (__seqfd == -1)
+      __seqfd = fd;
+    else
+      {
+	fprintf (stderr, "OSSlib: seqfd is inconsistent\n");
+      }
+
+  if (buf != _seqbuf)
+    {
+      fprintf (stderr, "OSSlib: _seqbuf is inconsistent\n");
+    }
+
+  if (buflen != _seqbuflen)
+    {
+      fprintf (stderr, "OSSlib: _seqbuf is inconsistent\n");
+    }
+
+  if (!initialized)
+    if (oss_init_lib () != 0)
+      {
+	fprintf (stderr, "OSSlib: Library initialization failed\n");
+	exit (-1);
+      }
+}
+
+void
+OSS_seqbuf_dump (int fd, unsigned char *buf, int buflen)
+{
+  seqbuf_dump ();
+}
+
+void
+OSS_seq_advbuf (int len, int fd, unsigned char *buf, int buflen)
+{
+  sanity_check (fd, buf, buflen);
+  _seqbufptr += len;
+}
+
+void
+OSS_seq_needbuf (int len, int fd, unsigned char *buf, int buflen)
+{
+  sanity_check (fd, buf, buflen);
+
+  if ((_seqbufptr + len) > _seqbuflen)
+    {
+      seqbuf_dump ();
+    }
+}
+
+void
+OSS_patch_caching (int dev, int chn, int patch, int fd, unsigned char *buf,
+		   int buflen)
+{
+}
+
+void
+OSS_drum_caching (int dev, int chn, int patch, int fd, unsigned char *buf,
+		  int buflen)
+{
+}
+
+void
+OSS_write_patch (int fd, unsigned char *buf, int len)
+{
+  sanity_check (fd, _seqbuf, _seqbuflen);
+
+  if (write (fd, buf, len) == -1)
+    {
+      perror ("OSS_write_patch");
+      exit (-1);
+    }
+}
+
+int
+OSS_write_patch2 (int fd, unsigned char *buf, int len)
+{
+  sanity_check (fd, _seqbuf, _seqbuflen);
+
+  return write (fd, buf, len);
+}
+
+/*
+ * audio routines
+ */
+
+int
+osslib_open (const char *path, int flags, int dummy)
+{
+  return open (path, flags, dummy);
+}
+
+void
+osslib_close (int fd)
+{
+  close (fd);
+}
+
+int
+osslib_write (int fd, const void *buf, int count)
+{
+  return write (fd, buf, count);
+}
+
+int
+osslib_read (int fd, void *buf, int count)
+{
+  return read (fd, buf, count);
+}
+
+int
+osslib_ioctl (int fd, unsigned int request, void *arg)
+{
+  return ioctl (fd, request, arg);
+}