* Many thanks to Dan Dennedy <dan@dennedy.org> for providing wealth
* of DV technical info.
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* 248DCT setup */
s->fdct[1] = dsp.fdct248;
s->idct_put[1] = ff_simple_idct248_put; // FIXME: need to add it to DSP
- memcpy(s->dv_zigzag[1], ff_zigzag248_direct, 64);
+ if (avctx->lowres){
+ for (i = 0; i < 64; i++){
+ int j = ff_zigzag248_direct[i];
+ s->dv_zigzag[1][i] = dsp.idct_permutation[(j & 7) + (j & 8) * 4 + (j & 48) / 2];
+ }
+ }else
+ memcpy(s->dv_zigzag[1], ff_zigzag248_direct, 64);
avctx->coded_frame = &s->picture;
s->avctx = avctx;
ff_dv_print_profiles(avctx, AV_LOG_ERROR);
return AVERROR(EINVAL);
}
+ if (avctx->height > 576) {
+ av_log(avctx, AV_LOG_ERROR, "DVCPRO HD encoding is not supported.\n");
+ return AVERROR_PATCHWELCOME;
+ }
dv_vlc_map_tableinit();
method suggested in SMPTE 314M Table 22, and an improved
method. The SMPTE method is very conservative; it assigns class
3 (i.e. severe quantization) to any block where the largest AC
- component is greater than 36. Libav's DV encoder tracks AC bit
+ component is greater than 36. FFmpeg's DV encoder tracks AC bit
consumption precisely, so there is no need to bias most blocks
towards strongly lossy compression. Instead, we assign class 2
to most blocks, and use class 3 only when strictly necessary
#if 0 /* SMPTE spec method */
static const int classes[] = {12, 24, 36, 0xffff};
-#else /* improved Libav method */
+#else /* improved FFmpeg method */
static const int classes[] = {-1, -1, 255, 0xffff};
#endif
int max = classes[0];
s->sys = avpriv_dv_codec_profile(c);
if (!s->sys || ff_dv_init_dynamic_tables(s->sys))
return -1;
- if ((ret = ff_alloc_packet(pkt, s->sys->frame_size)) < 0) {
- av_log(c, AV_LOG_ERROR, "Error getting output packet.\n");
+ if ((ret = ff_alloc_packet2(c, pkt, s->sys->frame_size)) < 0)
return ret;
- }
c->pix_fmt = s->sys->pix_fmt;
s->picture = *frame;