FFmpeg
qpeldsp.h
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1 /*
2  * quarterpel DSP functions
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /**
22  * @file
23  * quarterpel DSP functions
24  */
25 
26 #ifndef AVCODEC_QPELDSP_H
27 #define AVCODEC_QPELDSP_H
28 
29 #include <stddef.h>
30 #include <stdint.h>
31 
32 void ff_put_pixels8x8_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
33 void ff_avg_pixels8x8_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
34 void ff_put_pixels16x16_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
35 void ff_avg_pixels16x16_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride);
36 
37 void ff_put_pixels8_l2_8(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
38  int dst_stride, int src_stride1, int src_stride2,
39  int h);
40 
41 #define DEF_OLD_QPEL(name) \
42 void ff_put_ ## name(uint8_t *dst /* align width (8 or 16) */, \
43  const uint8_t *src /* align 1 */, \
44  ptrdiff_t stride); \
45 void ff_put_no_rnd_ ## name(uint8_t *dst /* align width (8 or 16) */, \
46  const uint8_t *src /* align 1 */, \
47  ptrdiff_t stride); \
48 void ff_avg_ ## name(uint8_t *dst /* align width (8 or 16) */, \
49  const uint8_t *src /* align 1 */, \
50  ptrdiff_t stride);
51 
52 DEF_OLD_QPEL(qpel16_mc11_old_c)
53 DEF_OLD_QPEL(qpel16_mc31_old_c)
54 DEF_OLD_QPEL(qpel16_mc12_old_c)
55 DEF_OLD_QPEL(qpel16_mc32_old_c)
56 DEF_OLD_QPEL(qpel16_mc13_old_c)
57 DEF_OLD_QPEL(qpel16_mc33_old_c)
58 DEF_OLD_QPEL(qpel8_mc11_old_c)
59 DEF_OLD_QPEL(qpel8_mc31_old_c)
60 DEF_OLD_QPEL(qpel8_mc12_old_c)
61 DEF_OLD_QPEL(qpel8_mc32_old_c)
62 DEF_OLD_QPEL(qpel8_mc13_old_c)
63 DEF_OLD_QPEL(qpel8_mc33_old_c)
64 
65 typedef void (*qpel_mc_func)(uint8_t *dst /* align width (8 or 16) */,
66  const uint8_t *src /* align 1 */,
67  ptrdiff_t stride);
68 
69 /**
70  * quarterpel DSP context
71  */
72 typedef struct QpelDSPContext {
73  qpel_mc_func put_qpel_pixels_tab[2][16];
74  qpel_mc_func avg_qpel_pixels_tab[2][16];
75  qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];
77 
79 
82 
83 #endif /* AVCODEC_QPELDSP_H */
void ff_avg_pixels8x8_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
Definition: qpeldsp.c:708
void ff_put_pixels8x8_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
Definition: qpeldsp.c:703
#define src
Definition: vp8dsp.c:254
void ff_qpeldsp_init_x86(QpelDSPContext *c)
Definition: qpeldsp_init.c:529
uint8_t
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
void(* qpel_mc_func)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
Definition: qpeldsp.h:65
void ff_qpeldsp_init_mips(QpelDSPContext *c)
void ff_put_pixels16x16_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
Definition: qpeldsp.c:713
#define src1
Definition: h264pred.c:139
#define DEF_OLD_QPEL(name)
Definition: qpeldsp.h:41
quarterpel DSP context
Definition: qpeldsp.h:72
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:104
void ff_put_pixels8_l2_8(uint8_t *dst, const uint8_t *src1, const uint8_t *src2, int dst_stride, int src_stride1, int src_stride2, int h)
Definition: qpeldsp.c:730
void ff_avg_pixels16x16_c(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
Definition: qpeldsp.c:718
void ff_qpeldsp_init(QpelDSPContext *c)
Definition: qpeldsp.c:783