From 0951e00dc05236b54a03e25c2c331bf1be332dc5 Mon Sep 17 00:00:00 2001
From: Jan Schmidt <thaytan@mad.scientist.com>
Date: Tue, 17 Jun 2008 01:08:14 +0000
Subject: configure.ac: Check for libdvdnav to build resindvd.

Original commit message from CVS:
* configure.ac:
Check for libdvdnav to build resindvd.
* ext/Makefile.am:
* ext/resindvd/Makefile.am:
* ext/resindvd/gstmpegdefs.h:
* ext/resindvd/gstmpegdemux.c:
* ext/resindvd/gstmpegdemux.h:
* ext/resindvd/gstmpegdesc.c:
* ext/resindvd/gstmpegdesc.h:
* ext/resindvd/gstpesfilter.c:
* ext/resindvd/gstpesfilter.h:
* ext/resindvd/plugin.c:
* ext/resindvd/resin-play:
* ext/resindvd/resindvdbin.c:
* ext/resindvd/resindvdbin.h:
* ext/resindvd/resindvdsrc.c:
* ext/resindvd/resindvdsrc.h:
* ext/resindvd/rsnaudiomunge.c:
* ext/resindvd/rsnaudiomunge.h:
* ext/resindvd/rsnbasesrc.c:
* ext/resindvd/rsnbasesrc.h:
* ext/resindvd/rsnpushsrc.c:
* ext/resindvd/rsnpushsrc.h:
* ext/resindvd/rsnstreamselector.c:
* ext/resindvd/rsnstreamselector.h:
First commit of DVD-Video playback component 'rsndvdbin'
and helper elements.
Use --enable-experimental for now, but feel free to give it a
try using the resin-play script.
* gst/dvdspu/gstdvdspu.c:
Add some extra guards for malformed events.
---
 ext/resindvd/gstmpegdesc.c | 156 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 156 insertions(+)
 create mode 100644 ext/resindvd/gstmpegdesc.c

(limited to 'ext/resindvd/gstmpegdesc.c')

diff --git a/ext/resindvd/gstmpegdesc.c b/ext/resindvd/gstmpegdesc.c
new file mode 100644
index 00000000..514e5d31
--- /dev/null
+++ b/ext/resindvd/gstmpegdesc.c
@@ -0,0 +1,156 @@
+/* 
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/.
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
+ * License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * The Original Code is Fluendo MPEG Demuxer plugin.
+ *
+ * The Initial Developer of the Original Code is Fluendo, S.L.
+ * Portions created by Fluendo, S.L. are Copyright (C) 2005
+ * Fluendo, S.L. All Rights Reserved.
+ *
+ * Contributor(s): Wim Taymans <wim@fluendo.com>
+ *                 Jan Schmidt <thaytan@noraisin.net>
+ */
+
+#include <string.h>
+
+#include <gst/gst.h>
+
+#include "gstmpegdesc.h"
+
+void
+gst_mpeg_descriptor_free (GstMPEGDescriptor * desc)
+{
+  g_return_if_fail (desc != NULL);
+
+  g_free (desc);
+}
+
+static guint
+gst_mpeg_descriptor_parse_1 (guint8 * data, guint size)
+{
+  guint8 tag;
+  guint8 length;
+
+  /* need at least 2 bytes for tag and length */
+  if (size < 2)
+    return 0;
+
+  tag = *data++;
+  length = *data++;
+  size -= 2;
+
+  GST_DEBUG ("tag: 0x%02x, length: %d", tag, length);
+
+  if (length > size)
+    return 0;
+
+  return length + 2;;
+}
+
+GstMPEGDescriptor *
+gst_mpeg_descriptor_parse (guint8 * data, guint size)
+{
+  guint8 *current;
+  guint consumed, total, n_desc;
+  GstMPEGDescriptor *result;
+
+  g_return_val_if_fail (data != NULL, NULL);
+
+  current = data;
+  total = 0;
+  n_desc = 0;
+
+  do {
+    consumed = gst_mpeg_descriptor_parse_1 (current, size);
+
+    if (consumed > 0) {
+      current += consumed;
+      total += consumed;
+      size -= consumed;
+      n_desc++;
+    }
+  }
+  while (consumed > 0);
+
+  GST_DEBUG ("parsed %d descriptors", n_desc);
+
+  if (total == 0)
+    return NULL;
+
+  result = g_malloc (sizeof (GstMPEGDescriptor) + total);
+  result->n_desc = n_desc;
+  result->data_length = total;
+  result->data = ((guint8 *) result) + sizeof (GstMPEGDescriptor);
+
+  memcpy (result->data, data, total);
+
+  return result;
+}
+
+guint
+gst_mpeg_descriptor_n_desc (GstMPEGDescriptor * desc)
+{
+  g_return_val_if_fail (desc != NULL, 0);
+
+  return desc->n_desc;
+}
+
+guint8 *
+gst_mpeg_descriptor_find (GstMPEGDescriptor * desc, gint tag)
+{
+  gint length;
+  guint8 *current;
+  guint size;
+
+  g_return_val_if_fail (desc != NULL, NULL);
+
+  current = desc->data;
+  length = desc->data_length;
+
+  while (length > 0) {
+    if (DESC_TAG (current) == tag)
+      return current;
+
+    size = DESC_LENGTH (current) + 2;
+
+    current += size;
+    length -= size;
+  }
+  return NULL;
+}
+
+guint8 *
+gst_mpeg_descriptor_nth (GstMPEGDescriptor * desc, guint i)
+{
+  gint length;
+  guint8 *current;
+  guint size;
+
+  g_return_val_if_fail (desc != NULL, NULL);
+
+  if (i > desc->n_desc)
+    return NULL;
+
+  current = desc->data;
+  length = desc->data_length;
+
+  while (length > 0) {
+    if (i == 0)
+      return current;
+
+    size = DESC_LENGTH (current) + 2;
+
+    current += size;
+    length -= size;
+    i--;
+  }
+  return NULL;
+}
-- 
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