[mythtv] Building 0.20svn on MacOS x86? Change reverted

[Nigel Pearson]

> I do have some crash dump info, that might help
> a bit.  It's crashing in the quicktime libraries.
...
> Thread 5 Crashed:
> 0   ...ickTimeComponents.component      0x98e0043d YUV420To2VUY_W1x + 
> 671

	Thanks for that. Sadly, it doesn't reveal much.

1) I have forgotten. What was the actual crash.
EXC_BAD_ACCESS?

2) I suspect that it is being passed a bitmap
which isn't a legal YUV420 structure, but I can't
work out how it is wrong, so you (or someone else)
may have to do some tedious patching and testing.
This patch:

% svn diff videoout_quartz.cpp
Index: videoout_quartz.cpp
===================================================================
--- videoout_quartz.cpp (revision 10654)
+++ videoout_quartz.cpp (working copy)
@@ -1509,6 +1509,16 @@
          offset += (width * height) / 4;
          data->pixmap->componentInfoCr.offset = offset;
          data->pixmap->componentInfoCr.rowBytes = width / 2;
+
+cout << "YUV420 data:"                                << endl
+     << "  width/height : " << width << "/" << height << endl
+     << "  pixelSize    : " << data->pixelSize        << endl
+     << "  pixmapSize   : " << data->pixmapSize       << endl
+     << "  pixmap       : " << data->pixmap           << endl
+     << "  pixelData    : " << data->pixelData        << endl
+     << "  Y.offset     : " << data->pixmap->componentInfoY.offset  << 
endl
+     << "  Cb.offset    : " << data->pixmap->componentInfoCb.offset << 
endl
+     << "  Cr.offset    : " << data->pixmap->componentInfoCr.offset << 
endl;
      }

      data->pixelLock.unlock();
%

outputs this on a PPC machine:

YUV420 data:
   width/height : 720/576
   pixelSize    : 622080
   pixmapSize   : 622104
   pixmap       : 0x18fc4000
   pixelData    : 0x18fc4018
   Y.offset     : 24
   Cb.offset    : 414744
   Cr.offset    : 518424



	Could I trouble you to apply it and send me
your IntelMac output so that I can check the maths?

--
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Telstra Net. Eng., Sydney, Australia | it should be perfectly safe."
Office: 9202 3900    Fax:  9261 3912 |"Just a bit or harmless brain
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