Hi, ----- Mail original ----- > Rely on the way memcpy is optimized for one's system instead of > looping > on a byte buffer for buffer copies to handle P frames. > --- > libavcodec/pngdec.c | 30 +++++++++++++++--------------- > 1 file changed, 15 insertions(+), 15 deletions(-) > > diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c > index 7e7b285..8b004bd 100644 > --- a/libavcodec/pngdec.c > +++ b/libavcodec/pngdec.c > @@ -844,15 +844,14 @@ static int decode_fctl_chunk(AVCodecContext > *avctx, PNGDecContext *s, > > static void handle_p_frame_png(PNGDecContext *s, AVFrame *p) > { > - int i, j; > + int j; > uint8_t *pd = p->data[0]; > uint8_t *pd_last = s->last_picture.f->data[0]; > int ls = FFMIN(av_image_get_linesize(p->format, s->width, 0), > s->width * s->bpp); > > ff_thread_await_progress(&s->last_picture, INT_MAX, 0); > for (j = 0; j < s->height; j++) { > - for (i = 0; i < ls; i++) > - pd[i] += pd_last[i]; > + memcpy(pd, pd_last, ls); >
Ouch... Reverted locally... -- Ben _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel