From 2a18fb3546915257b9bdfc722afd92c12f605a19 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Tim-Philipp=20M=C3=BCller?= <tim@centricular.net>
Date: Wed, 20 Dec 2006 09:25:55 +0000
Subject: [PATCH] gst/typefind/gsttypefindfunctions.c: Add typefinder for VIVO
 files (my christmas present to the 90s).

Original commit message from CVS:
* gst/typefind/gsttypefindfunctions.c: (vivo_type_find),
(plugin_init):
Add typefinder for VIVO files (my christmas present to the 90s).
---
 ChangeLog                           |  6 ++++++
 gst/typefind/gsttypefindfunctions.c | 43 +++++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index a990b89..2404f56 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2006-12-20  Tim-Philipp Müller  <tim at centricular dot net>
+
+	* gst/typefind/gsttypefindfunctions.c: (vivo_type_find),
+	(plugin_init):
+	  Add typefinder for VIVO files (my christmas present to the 90s).
+
 2006-12-16  Tim-Philipp Müller  <tim at centricular dot net>
 
 	* gst/playback/gstdecodebin.c: (type_found):
diff --git a/gst/typefind/gsttypefindfunctions.c b/gst/typefind/gsttypefindfunctions.c
index 7b5bc37..0e99abf 100644
--- a/gst/typefind/gsttypefindfunctions.c
+++ b/gst/typefind/gsttypefindfunctions.c
@@ -2430,6 +2430,47 @@ mmsh_type_find (GstTypeFind * tf, gpointer unused)
   }
 }
 
+/*** video/vivo ***/
+
+static GstStaticCaps vivo_caps = GST_STATIC_CAPS ("video/vivo");
+
+#define VIVO_CAPS gst_static_caps_get(&vivo_caps)
+
+static void
+vivo_type_find (GstTypeFind * tf, gpointer unused)
+{
+  static const guint8 vivo_marker[] = { 'V', 'e', 'r', 's', 'i', 'o', 'n',
+    ':', 'V', 'i', 'v', 'o', '/'
+  };
+  guint8 *data;
+  guint hdr_len, pos;
+
+  data = gst_type_find_peek (tf, 0, 1024);
+  if (data == NULL || data[0] != 0x00)
+    return;
+
+  if ((data[1] & 0x80)) {
+    if ((data[2] & 0x80))
+      return;
+    hdr_len = ((guint) (data[1] & 0x7f)) << 7;
+    hdr_len += data[2];
+    if (hdr_len > 2048)
+      return;
+    pos = 3;
+  } else {
+    hdr_len = data[1];
+    pos = 2;
+  }
+
+  /* 1008 = 1022 - strlen ("Version:Vivo/") - 1 */
+  while (pos < 1008 && data[pos] == '\r' && data[pos + 1] == '\n')
+    pos += 2;
+
+  if (memcmp (data + pos, vivo_marker, sizeof (vivo_marker)) == 0) {
+    gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, VIVO_CAPS);
+  }
+}
+
 /*** generic typefind for streams that have some data at a specific position***/
 typedef struct
 {
@@ -2798,6 +2839,8 @@ plugin_init (GstPlugin * plugin)
       multipart_type_find, NULL, MULTIPART_CAPS, NULL, NULL);
   TYPE_FIND_REGISTER (plugin, "application/x-mmsh", GST_RANK_SECONDARY,
       mmsh_type_find, NULL, MMSH_CAPS, NULL, NULL);
+  TYPE_FIND_REGISTER (plugin, "video/vivo", GST_RANK_SECONDARY,
+      vivo_type_find, NULL, VIVO_CAPS, NULL, NULL);
   return TRUE;
 }
 
-- 
2.7.4