[FFmpeg-devel] [PATCH] swscale: Only copy dstW/chrDstW of the last line in the plane in planar copy
Fri Jul 16 09:14:53 CEST 2010
The attached patch makes planarCopyWrapper all lines but the last in one
block, then copies only dstW/chrDstW of the last line.
If the destination planes are offset within their buffer, copying the
whole plane in one memcpy may write outside of the destination buffer.
A concrete example: The source data is 144x144, stored in the upper left
corner of a 176x144 buffer. If this is "scaled" into 144x144 into another
176x144 buffer, but centered into this buffer, the approach wich memcpying
the whole plane writes outside of the destination buffer.
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 1714 bytes
More information about the ffmpeg-devel