ffmpeg | branch: master | Michael Niedermayer <[email protected]> | Sun Aug 5 17:12:33 2018 +0200| [510bd61941548b653ae446ede199013d9af01257] | committer: Michael Niedermayer
avcodec/gdv: Optimize 2x scaling loop a little in gdv_decode_frame() Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=510bd61941548b653ae446ede199013d9af01257 --- libavcodec/gdv.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/libavcodec/gdv.c b/libavcodec/gdv.c index 1623febd1a..d497f76157 100644 --- a/libavcodec/gdv.c +++ b/libavcodec/gdv.c @@ -481,8 +481,12 @@ static int gdv_decode_frame(AVCodecContext *avctx, void *data, if (!gdv->scale_v) { memcpy(dst + didx, gdv->frame + sidx, avctx->width); } else { - for (x = 0; x < avctx->width; x++) { - dst[didx + x] = gdv->frame[sidx + x/2]; + for (x = 0; x < avctx->width - 1; x+=2) { + dst[didx + x ] = + dst[didx + x + 1] = gdv->frame[sidx + (x>>1)]; + } + for (; x < avctx->width; x++) { + dst[didx + x] = gdv->frame[sidx + (x>>1)]; } } if (!gdv->scale_h || ((y & 1) == 1)) { _______________________________________________ ffmpeg-cvslog mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
