2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #include "libavutil/attributes.h"
26 av_cold
void ff_fdctdsp_init(FDCTDSPContext
*c
, AVCodecContext
*avctx
)
28 const unsigned high_bit_depth
= avctx
->bits_per_raw_sample
> 8;
30 if (avctx
->bits_per_raw_sample
== 10) {
31 c
->fdct
= ff_jpeg_fdct_islow_10
;
32 c
->fdct248
= ff_fdct248_islow_10
;
33 } else if (avctx
->dct_algo
== FF_DCT_FASTINT
) {
34 c
->fdct
= ff_fdct_ifast
;
35 c
->fdct248
= ff_fdct_ifast248
;
37 } else if (avctx
->dct_algo
== FF_DCT_FAAN
) {
39 c
->fdct248
= ff_faandct248
;
40 #endif /* CONFIG_FAANDCT */
42 c
->fdct
= ff_jpeg_fdct_islow_8
; // slow/accurate/default
43 c
->fdct248
= ff_fdct248_islow_8
;
47 ff_fdctdsp_init_ppc(c
, avctx
, high_bit_depth
);
49 ff_fdctdsp_init_x86(c
, avctx
, high_bit_depth
);