slomo gst-plugins-bad: gst-plugins-bad/ gst-plugins-bad/gst/mxf/

CVS Root:       /cvs/gstreamer
Module:         gst-plugins-bad
Changes by:     slomo
Date:           Sat Dec 06 2008  19:46:20 UTC

Log message:
* gst/mxf/mxfd10.c: (mxf_d10_sound_handle_essence_element):
Document decoding of the AES3 data and also skip the 32 bit
header in the beginning of every buffer, otherwise we get
one broken audio channel.

Modified files:
    .               : ChangeLog
    gst/mxf         : mxfd10.c

Links:
http://freedesktop.org/cgi-bin/viewcvs.cgi/gstreamer/gst-plugins-bad/ChangeLog.diff?r1=1.3792&r2=1.3793
http://freedesktop.org/cgi-bin/viewcvs.cgi/gstreamer/gst-plugins-bad/gst/mxf/mxfd10.c.diff?r1=1.1&r2=1.2

====Begin Diffs====
Index: ChangeLog
===================================================================
RCS file: /cvs/gstreamer/gst-plugins-bad/ChangeLog,v
retrieving revision 1.3792
retrieving revision 1.3793
diff -u -d -r1.3792 -r1.3793
--- ChangeLog	5 Dec 2008 12:26:00 -0000	1.3792
+++ ChangeLog	6 Dec 2008 19:46:03 -0000	1.3793
@@ -1,3 +1,10 @@
+2008-12-06  Sebastian Dröge  <[email protected]>
+
+	* gst/mxf/mxfd10.c: (mxf_d10_sound_handle_essence_element):
+	Document decoding of the AES3 data and also skip the 32 bit
+	header in the beginning of every buffer, otherwise we get
+	one broken audio channel.
 2008-12-05  Sebastian Dröge  <[email protected]>
 
 	* gst/mxf/mxfdemux.c: (gst_mxf_demux_reset_metadata),
Index: mxfd10.c
RCS file: /cvs/gstreamer/gst-plugins-bad/gst/mxf/mxfd10.c,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -d -r1.1 -r1.2
--- mxfd10.c	4 Dec 2008 08:37:18 -0000	1.1
+++ mxfd10.c	6 Dec 2008 19:46:05 -0000	1.2
@@ -118,10 +118,16 @@
   indata = GST_BUFFER_DATA (buffer);
   outdata = GST_BUFFER_DATA (*outbuf);
+  /* Skip 32 bit header */
+  indata += 4;
   for (i = 0; i < nsamples; i++) {
     for (j = 0; j < channels; j++) {
       guint32 in = GST_READ_UINT32_LE (indata);
+      /* Remove first 4 and last 4 bits as they only
+       * contain status data. Shift the 24 bit samples
+       * to the correct width afterwards. */
       if (width == 2) {
         in = (in >> 12) & 0xffff;
         GST_WRITE_UINT16_LE (outdata, in);
@@ -132,6 +138,8 @@
       indata += 4;
       outdata += width;
     }
+    /* There are always 8 channels but only the first
+     * ones contain valid data, skip the others */
     indata += 4 * (8 - channels);
   }

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