Split off floating point AAN (I)DCT into separate components
[libav.git] / libavcodec / fdctdsp.c
1 /*
2 * This file is part of Libav.
3 *
4 * Libav 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.
8 *
9 * Libav 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.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with Libav; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include "libavutil/attributes.h"
20 #include "avcodec.h"
21 #include "dct.h"
22 #include "faandct.h"
23 #include "fdctdsp.h"
24 #include "config.h"
25
26 av_cold void ff_fdctdsp_init(FDCTDSPContext *c, AVCodecContext *avctx)
27 {
28 const unsigned high_bit_depth = avctx->bits_per_raw_sample > 8;
29
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;
36 #if CONFIG_FAANDCT
37 } else if (avctx->dct_algo == FF_DCT_FAAN) {
38 c->fdct = ff_faandct;
39 c->fdct248 = ff_faandct248;
40 #endif /* CONFIG_FAANDCT */
41 } else {
42 c->fdct = ff_jpeg_fdct_islow_8; // slow/accurate/default
43 c->fdct248 = ff_fdct248_islow_8;
44 }
45
46 if (ARCH_PPC)
47 ff_fdctdsp_init_ppc(c, avctx, high_bit_depth);
48 if (ARCH_X86)
49 ff_fdctdsp_init_x86(c, avctx, high_bit_depth);
50 }