On Wed, Jun 24, 2009 at 3:58 PM, Michael Niedermayer<[email protected]> wrote: > On Wed, Jun 24, 2009 at 01:42:08PM +0000, Jai Menon wrote: >> On Wed, Jun 24, 2009 at 1:27 PM, Michael Niedermayer<[email protected]> wrote: >> > On Sun, Jun 21, 2009 at 04:35:20PM +0000, Jai Menon wrote: > [...] >> > [...] >> >> @@ -806,6 +815,26 @@ >> >> >> >> line += s->picture.linesize[0]; >> >> } >> >> + } else { >> >> + for (; y < tile->comp[0].coord[1][1] - s->image_offset_y; y++) { >> >> + uint16_t *dst; >> >> + x = tile->comp[0].coord[0][0] - s->image_offset_x; >> >> + dst = line + x * s->ncomponents * 2; >> >> + for (; x < tile->comp[0].coord[0][1] - s->image_offset_x; >> >> x++) { >> >> + for (compno = 0; compno < s->ncomponents; compno++) { >> > >> >> + *src[compno] = av_rescale(*src[compno], (1 << 16) - >> >> 1, >> >> + (1 << s->cbps[compno]) - >> >> 1); >> > >> > av_rescale is too slow >> >> So just (*src[compno]/((1 << s->cbps[compno]) - 1)) * ((1 << 16) - 1) ? > > * is slow > / s slower > > "src" << C > it should be
<possibly dumb question ahead> I understand that * and / are slower but how can I achieve the same effect with a single <<? -- Regards, Jai _______________________________________________ FFmpeg-soc mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-soc
