FFmpeg
wmv2dsp.h
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1 /*
2  * This file is part of FFmpeg.
3  *
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.
8  *
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.
13  *
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
17  */
18 
19 #ifndef AVCODEC_WMV2DSP_H
20 #define AVCODEC_WMV2DSP_H
21 
22 #include <stdint.h>
23 
24 #include "qpeldsp.h"
25 
26 typedef struct WMV2DSPContext {
27  void (*idct_add)(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
28  void (*idct_put)(uint8_t *dest, ptrdiff_t line_size, int16_t *block);
29 
31 
32  int idct_perm;
34 
37 
38 #endif /* AVCODEC_WMV2DSP_H */
The exact code depends on how similar the blocks are and how related they are to the block
uint8_t
int idct_perm
Definition: wmv2dsp.h:32
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
quarterpel DSP functions
void(* qpel_mc_func)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
Definition: qpeldsp.h:65
void ff_wmv2dsp_init_mips(WMV2DSPContext *c)
qpel_mc_func put_mspel_pixels_tab[8]
Definition: wmv2dsp.h:30
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
void ff_wmv2dsp_init(WMV2DSPContext *c)
Definition: wmv2dsp.c:251
void(* idct_put)(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: wmv2dsp.h:28
void(* idct_add)(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: wmv2dsp.h:27