Libav
xvididct.c
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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 "config.h"
20 #include "libavutil/attributes.h"
21 #include "avcodec.h"
22 #include "idctdsp.h"
23 #include "xvididct.h"
24 
26 {
27  const unsigned high_bit_depth = avctx->bits_per_raw_sample > 8;
28 
29  if (high_bit_depth ||
30  !(avctx->idct_algo == FF_IDCT_AUTO ||
31  avctx->idct_algo == FF_IDCT_XVID))
32  return;
33 
34  if (ARCH_X86)
36 
38 }
av_cold void ff_xvididct_init_x86(IDCTDSPContext *c)
Definition: xvididct_init.c:28
#define ARCH_X86
Definition: config.h:33
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2514
Macro definitions for various function/variable attributes.
#define av_cold
Definition: attributes.h:66
#define FF_IDCT_AUTO
Definition: avcodec.h:2474
#define FF_IDCT_XVID
Definition: avcodec.h:2487
av_cold void ff_xvididct_init(IDCTDSPContext *c, AVCodecContext *avctx)
Definition: xvididct.c:25
av_cold void ff_init_scantable_permutation(uint8_t *idct_permutation, enum idct_permutation_type perm_type)
Definition: idctdsp.c:49
int idct_algo
IDCT algorithm, see FF_IDCT_* below.
Definition: avcodec.h:2473
uint8_t idct_permutation[64]
IDCT input permutation.
Definition: idctdsp.h:94
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:1050
enum idct_permutation_type perm_type
Definition: idctdsp.h:95