Commit f44ad92c authored by Michael Niedermayer's avatar Michael Niedermayer

sws: print a warning on unaligned input on SSE2+

Signed-off-by: 's avatarMichael Niedermayer <michaelni@gmx.at>
parent fbf4b390
......@@ -2539,6 +2539,18 @@ static int swScale(SwsContext *c, const uint8_t* src[],
}
}
if ((int)dst[0]%16 || (int)dst[1]%16 || (int)dst[2]%16 || (int)src[0]%16 || (int)src[1]%16 || (int)src[2]%16
|| dstStride[0]%16 || dstStride[1]%16 || dstStride[2]%16 || dstStride[3]%16
|| srcStride[0]%16 || srcStride[1]%16 || srcStride[2]%16 || srcStride[3]%16
) {
static int warnedAlready=0;
int cpu_flags = av_get_cpu_flags();
if (HAVE_MMX2 && (cpu_flags & AV_CPU_FLAG_SSE2) && !warnedAlready){
av_log(c, AV_LOG_WARNING, "Warning: data is not aligned! This can lead to a speedloss\n");
warnedAlready=1;
}
}
/* Note the user might start scaling the picture in the middle so this
will not get executed. This is not really intended but works
currently, so people might do it. */
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment