ffmpeg binaries for chromium ogg data patch ...

source/patched-ffmpeg-mt/libavformat/oggdec.c

 /*
  * Ogg bitstream support
  * Luca Barbato <lu_zero@gentoo.org>
  * Based on tcvp implementation
  *
  */
 
 /**
     Copyright (C) 2005  Michael Ahlberg, Måns Rullgård
 
@@ skipping 365 matching lines @@
         av_log(s, AV_LOG_WARNING, "Page at %"PRId64" is missing granule\n", os->page_pos);
 
     ogg->curidx = idx;
     os->incomplete = 0;
 
     if (os->header) {
         os->header = os->codec->header (s, idx);
         if (!os->header){
             os->segp = segp;
             os->psize = psize;
-            if (!ogg->headers)
-                s->data_offset = os->sync_pos;
+
+            // We've reached the first non-header packet. All header
+            // packets must be complete before the first non-header
+            // one, so everything that follows must be non-header.
             ogg->headers = 1;
+
+            // Update the header state for all streams and
+            // compute the data_offset.
+            s->data_offset = os->sync_pos;
+            for (i = 0; i < ogg->nstreams; i++) {
+                struct ogg_stream *cur_os = ogg->streams + i;
+                // Set stream header state to 0 if its last packet
+                // was a header.
+                if (cur_os->header > 0)
+                    cur_os->header = 0;
+
+                // if we have a partial non-header packet, its start is
+                // obviously at or after the data start.
+                if (cur_os->incomplete)
+                    s->data_offset = FFMIN(s->data_offset, cur_os->sync_pos);
+            }
         }else{
             os->pstart += os->psize;
             os->psize = 0;
         }
     } else {
         os->pflags = 0;
         os->pduration = 0;
         if (os->codec && os->codec->packet)
             os->codec->packet (s, idx);
         if (str)
@@ skipping 274 matching lines @@
     sizeof (struct ogg),
     ogg_probe,
     ogg_read_header,
     ogg_read_packet,
     ogg_read_close,
     ogg_read_seek,
     ogg_read_timestamp,
     .extensions = "ogg",
     .flags = AVFMT_GENERIC_INDEX,
 };