1 files changed, 158 insertions, 0 deletions
diff --git a/debian/transcode/transcode-1.1.7/tools/buffer.c b/debian/transcode/transcode-1.1.7/tools/buffer.c
new file mode 100644
index 00000000..2f513357
--- /dev/null
+++ b/debian/transcode/transcode-1.1.7/tools/buffer.c
@@ -0,0 +1,158 @@
+/*
+ *  buffer.c
+ *
+ *  Copyright (C) Thomas Oestreich - June 2001
+ *
+ *  This file is part of transcode, a video stream processing tool
+ *
+ *  transcode 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, or (at your option)
+ *  any later version.
+ *
+ *  transcode is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GNU Make; see the file COPYING.  If not, write to
+ *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "buffer.h"
+
+#include <stdlib.h>
+#include <unistd.h>
+
+buffer_list_t *buffer_list_head;
+buffer_list_t *buffer_list_tail;
+
+buffer_list_t *buffer_register(int id)
+
+{
+
+  /* objectives:
+     ===========
+
+     register new buffer
+
+     allocate space for new buffer and establish backward reference
+
+
+  */
+
+  buffer_list_t *ptr;
+
+  // retrive a valid pointer from the pool
+
+  if((ptr = malloc(sizeof(buffer_list_t))) == NULL) return(NULL);
+
+  if((ptr->data = (char *) malloc(MAX_PCM_BUFFER)) == NULL) return(NULL);
+
+  ptr->status = BUFFER_EMPTY;
+
+  ptr->next = NULL;
+  ptr->prev = NULL;
+
+  ptr->id  = id;
+
+  if(buffer_list_tail != NULL)
+  {
+      buffer_list_tail->next = ptr;
+      ptr->prev = buffer_list_tail;
+  }
+
+  buffer_list_tail = ptr;
+
+  /* first buffer registered must set buffer_list_head */
+
+  if(buffer_list_head == NULL) buffer_list_head = ptr;
+
+  return(ptr);
+
+}
+
+
+/* ------------------------------------------------------------------ */
+
+
+void buffer_remove(buffer_list_t *ptr)
+
+{
+
+  /* objectives:
+     ===========
+
+     remove buffer from chained list
+
+  */
+
+
+  if(ptr == NULL) return;         // do nothing if null pointer
+
+  if(ptr->prev != NULL) (ptr->prev)->next = ptr->next;
+  if(ptr->next != NULL) (ptr->next)->prev = ptr->prev;
+
+  if(ptr == buffer_list_tail) buffer_list_tail = ptr->prev;
+  if(ptr == buffer_list_head) buffer_list_head = ptr->next;
+
+  // release valid pointer to pool
+  ptr->status = BUFFER_EMPTY;
+
+  free(ptr->data);
+  free(ptr);
+  ptr=NULL;
+
+}
+
+
+/* ------------------------------------------------------------------ */
+
+
+buffer_list_t *buffer_retrieve()
+
+{
+
+  /* objectives:
+     ===========
+
+     get pointer to next full buffer
+
+  */
+
+  buffer_list_t *ptr;
+
+  ptr = buffer_list_head;
+
+  /* move along the chain and check for status */
+
+  while(ptr != NULL)
+    {
+      if(ptr->status == BUFFER_READY)
+	{
+
+	  return(ptr);
+	}
+      ptr = ptr->next;
+    }
+
+  return(NULL);
+}
+
+/*************************************************************************/
+
+/*
+ * Local variables:
+ *   c-file-style: "stroustrup"
+ *   c-file-offsets: ((case-label . *) (statement-case-intro . *))
+ *   indent-tabs-mode: nil
+ * End:
+ *
+ * vim: expandtab shiftwidth=4:
+ */