[FFmpeg-devel] Fix bug: libavcodec/ppc/h264dsp.c

[rongyan]

Hi,
 We got defective video when use GCC 4.9.2 instead of GCC 4.9.1 to compile FFMEPG. And further found that GCC 4.8 and 4.9 need patch to fix the lvsl/lvsr bug on POWER LE, and GCC 5.1 contains the correct code since its release. The message on gcc-patches requesting approval for lvsl/lvsr patch is at https://gcc.gnu.org/ml/gcc-patches/2014-10/msg00228.html.
  
 So we create this patch to fix the lvsl bug for libavcodec/ppc/h264dsp.c, the fixed code avoid using lvsl and will not depends on GCC version, also it uses less instructions on POWER LE.
  
 The fate test before fixing is:
 
  
 And after fixing is:
 
  
 Thanks for your review.
  
 Rong Yan
  
 ------------------  
   The world has enough for everyone's need, but not enough for everyone's greed.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/jpeg
Size: 105001 bytes
Desc: not available
URL: <https://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20150514/8cc85f1f/attachment.jpe>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/jpeg
Size: 105082 bytes
Desc: not available
URL: <https://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20150514/8cc85f1f/attachment-0001.jpe>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-avcodec-ppc-h264dsp-POWER-LE-support-in-h264_idct_dc.patch
Type: application/octet-stream
Size: 2328 bytes
Desc: not available
URL: <https://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20150514/8cc85f1f/attachment.obj>