generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

sws: print a warning on unaligned input on SSE2+

Browse Source 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-10-31 01:36:02 +01:00
parent fbf4b390d0
commit f44ad92c3f
1 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
libswscale/swscale.c
View File

@ -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 /* Note the user might start scaling the picture in the middle so this
will not get executed. This is not really intended but works will not get executed. This is not really intended but works
currently, so people might do it. */ currently, so people might do it. */