[Extractor-gtk-cvslog] SF.net SVN: extractor-gtk:[114] trunk/extractor/generic.c

[<som...@us...>]

Revision: 114
          http://extractor-gtk.svn.sourceforge.net/extractor-gtk/?rev=114&view=rev
Author:   someone-guy
Date:     2009-02-08 12:42:05 +0000 (Sun, 08 Feb 2009)

Log Message:
-----------
Add detection for DV headers.

Modified Paths:
--------------
    trunk/extractor/generic.c

Modified: trunk/extractor/generic.c
===================================================================
--- trunk/extractor/generic.c	2008-09-17 19:00:18 UTC (rev 113)
+++ trunk/extractor/generic.c	2009-02-08 12:42:05 UTC (rev 114)
@@ -57,6 +57,18 @@
   return res;
 }
 
+static inline uint64_t get_le64(uint8_t **p) {
+  uint64_t res = get_le32(p);
+  res += (uint64_t)get_le32(p) << 32;
+  return res;
+}
+
+static inline uint64_t get_be64(uint8_t **p) {
+  uint64_t res = (uint64_t)get_be32(p) << 32;
+  res += get_be32(p);
+  return res;
+}
+
 static file_t *get_list(FILE *in) {
   register buffer_t t = 0;
   uint8_t *rambuf = malloc(2 * RAMBUF_SZ);
@@ -85,6 +97,7 @@
     t = t << 8 | rambuf[rambuf_pos++];
     p = rambuf + rambuf_pos;
     fpos++;
+    // NOTE: at least RAMBUF_SZ bytes after p are valid (unless EOF was reached)
     switch (t) {
       case HUGETAG(0xd0, 0xcf, 0x11, 0xe0, 0xa1, 0xb1, 0x1a, 0xe1):
         add_entry(&list, cnt, "msi");
@@ -105,6 +118,18 @@
         break;
     }
     switch ((uint32_t)t) {
+      case 0x1f07003f:
+      case 0x1f0700bf: {
+        uint32_t dvhdr = get_be32(&p);
+        uint64_t padding = get_be64(&p);
+        p -= 12;
+        if (padding != 0xffffffffffffffff) break;
+        add_entry(&list, cnt, "dv");
+        list[cnt].start = fpos - 4;
+        list[cnt].len = 0;
+        cnt++;
+        break;
+      }
       case TAG('M', 'S', 'C', 'F'): {
         uint32_t unk = get_le32(&p);
         uint32_t size = get_le32(&p);


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