RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Fix destination row striding in altivec_yuv2_bgr24. 

Misaligned row artifacts showed up when a 624x352 frame was converted
to BGR24 format.  When advancing to the next row the destination linesize
was added to the last output pointer position which was not linesize aligned,
resulting in a distorted picture.

Signed-off-by: Pavel Koshevoy <pavel@apple.aragog.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Pavel Koshevoy 2012-07-05 17:00:59 -06:00 committed by Michael Niedermayer
parent b22ecbc6a5
commit 665100c2f1
1 changed files with 4 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
libswscale/ppc/yuv2rgb_altivec.c
View File

@ -317,12 +317,7 @@ static int altivec_ ## name(SwsContext *c, const unsigned char **in, \
const ubyte *ui = in[1]; \
const ubyte *vi = in[2]; \
\
vector unsigned char *oute = \
(vector unsigned char *) \
(oplanes[0] + srcSliceY * outstrides[0]); \
vector unsigned char *outo = \
(vector unsigned char *) \
(oplanes[0] + srcSliceY * outstrides[0] + outstrides[0]); \
vector unsigned char *oute, *outo; \
\
/* loop moves y{1, 2}i by w */ \
instrides_scl[0] = instrides[0] * 2 - w; \
@ -332,6 +327,9 @@ static int altivec_ ## name(SwsContext *c, const unsigned char **in, \
instrides_scl[2] = instrides[2] - w / 2; \
\
for (i = 0; i < h / 2; i++) { \
oute = (vector unsigned char *)(oplanes[0] + outstrides[0] * \
(srcSliceY + i * 2)); \
outo = oute + (outstrides[0] >> 4); \
vec_dstst(outo, (0x02000002 | (((w * 3 + 32) / 32) << 16)), 0); \
vec_dstst(oute, (0x02000002 | (((w * 3 + 32) / 32) << 16)), 1); \
\
@ -429,9 +427,6 @@ static int altivec_ ## name(SwsContext *c, const unsigned char **in, \
vi += 8; \
} \
\
outo += (outstrides[0]) >> 4; \
oute += (outstrides[0]) >> 4; \
\
ui += instrides_scl[1]; \
vi += instrides_scl[2]; \
y1i += instrides_scl[0]; \