FFmpeg
cavsdsp.h
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1 /*
2  * Chinese AVS video (AVS1-P2, JiZhun profile) decoder.
3  * Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #ifndef AVCODEC_CAVSDSP_H
23 #define AVCODEC_CAVSDSP_H
24 
25 #include <stdint.h>
26 
27 #include "avcodec.h"
28 #include "qpeldsp.h"
29 
30 typedef struct CAVSDSPContext {
33  void (*cavs_filter_lv)(uint8_t *pix, ptrdiff_t stride, int alpha, int beta, int tc, int bs1, int bs2);
34  void (*cavs_filter_lh)(uint8_t *pix, ptrdiff_t stride, int alpha, int beta, int tc, int bs1, int bs2);
35  void (*cavs_filter_cv)(uint8_t *pix, ptrdiff_t stride, int alpha, int beta, int tc, int bs1, int bs2);
36  void (*cavs_filter_ch)(uint8_t *pix, ptrdiff_t stride, int alpha, int beta, int tc, int bs1, int bs2);
37  void (*cavs_idct8_add)(uint8_t *dst, int16_t *block, ptrdiff_t stride);
38  int idct_perm;
40 
43 
44 #endif /* AVCODEC_CAVSDSP_H */
CAVSDSPContext::cavs_filter_ch
void(* cavs_filter_ch)(uint8_t *pix, ptrdiff_t stride, int alpha, int beta, int tc, int bs1, int bs2)
Definition: cavsdsp.h:36
stride
int stride
Definition: mace.c:144
CAVSDSPContext::cavs_filter_lh
void(* cavs_filter_lh)(uint8_t *pix, ptrdiff_t stride, int alpha, int beta, int tc, int bs1, int bs2)
Definition: cavsdsp.h:34
CAVSDSPContext::put_cavs_qpel_pixels_tab
qpel_mc_func put_cavs_qpel_pixels_tab[2][16]
Definition: cavsdsp.h:31
CAVSDSPContext
Definition: cavsdsp.h:30
CAVSDSPContext::cavs_idct8_add
void(* cavs_idct8_add)(uint8_t *dst, int16_t *block, ptrdiff_t stride)
Definition: cavsdsp.h:37
CAVSDSPContext::cavs_filter_lv
void(* cavs_filter_lv)(uint8_t *pix, ptrdiff_t stride, int alpha, int beta, int tc, int bs1, int bs2)
Definition: cavsdsp.h:33
CAVSDSPContext::idct_perm
int idct_perm
Definition: cavsdsp.h:38
qpeldsp.h
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
qpel_mc_func
void(* qpel_mc_func)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
Definition: qpeldsp.h:65
CAVSDSPContext::cavs_filter_cv
void(* cavs_filter_cv)(uint8_t *pix, ptrdiff_t stride, int alpha, int beta, int tc, int bs1, int bs2)
Definition: cavsdsp.h:35
CAVSDSPContext::avg_cavs_qpel_pixels_tab
qpel_mc_func avg_cavs_qpel_pixels_tab[2][16]
Definition: cavsdsp.h:32
ff_cavsdsp_init
void ff_cavsdsp_init(CAVSDSPContext *c, AVCodecContext *avctx)
Definition: cavsdsp.c:551
avcodec.h
AVCodecContext
main external API structure.
Definition: avcodec.h:379
ff_cavsdsp_init_x86
void ff_cavsdsp_init_x86(CAVSDSPContext *c, AVCodecContext *avctx)
Definition: cavsdsp.c:430
tc
#define tc
Definition: regdef.h:69
alpha
static const int16_t alpha[]
Definition: ilbcdata.h:55
block
The exact code depends on how similar the blocks are and how related they are to the block
Definition: filter_design.txt:207