FFmpeg
h264qpel.c
Go to the documentation of this file.
1 /*
2  * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3  * Copyright (c) 2003-2010 Michael Niedermayer <michaelni@gmx.at>
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 #include "libavutil/attributes.h"
23 #include "h264qpel.h"
24 
25 #define pixeltmp int16_t
26 #define BIT_DEPTH 8
27 #include "h264qpel_template.c"
28 #undef BIT_DEPTH
29 
30 #define BIT_DEPTH 9
31 #include "h264qpel_template.c"
32 #undef BIT_DEPTH
33 
34 #define BIT_DEPTH 10
35 #include "h264qpel_template.c"
36 #undef BIT_DEPTH
37 #undef pixeltmp
38 
39 #define pixeltmp int32_t
40 #define BIT_DEPTH 12
41 #include "h264qpel_template.c"
42 #undef BIT_DEPTH
43 
44 #define BIT_DEPTH 14
45 #include "h264qpel_template.c"
46 #undef BIT_DEPTH
47 
48 
49 av_cold void ff_h264qpel_init(H264QpelContext *c, int bit_depth)
50 {
51 #undef FUNCC
52 #define FUNCC(f, depth) f ## _ ## depth ## _c
53 
54 #define dspfunc2(PFX, IDX, NUM, depth) \
55  c->PFX ## _pixels_tab[IDX][ 0] = FUNCC(PFX ## NUM ## _mc00, depth); \
56  c->PFX ## _pixels_tab[IDX][ 1] = FUNCC(PFX ## NUM ## _mc10, depth); \
57  c->PFX ## _pixels_tab[IDX][ 2] = FUNCC(PFX ## NUM ## _mc20, depth); \
58  c->PFX ## _pixels_tab[IDX][ 3] = FUNCC(PFX ## NUM ## _mc30, depth); \
59  c->PFX ## _pixels_tab[IDX][ 4] = FUNCC(PFX ## NUM ## _mc01, depth); \
60  c->PFX ## _pixels_tab[IDX][ 5] = FUNCC(PFX ## NUM ## _mc11, depth); \
61  c->PFX ## _pixels_tab[IDX][ 6] = FUNCC(PFX ## NUM ## _mc21, depth); \
62  c->PFX ## _pixels_tab[IDX][ 7] = FUNCC(PFX ## NUM ## _mc31, depth); \
63  c->PFX ## _pixels_tab[IDX][ 8] = FUNCC(PFX ## NUM ## _mc02, depth); \
64  c->PFX ## _pixels_tab[IDX][ 9] = FUNCC(PFX ## NUM ## _mc12, depth); \
65  c->PFX ## _pixels_tab[IDX][10] = FUNCC(PFX ## NUM ## _mc22, depth); \
66  c->PFX ## _pixels_tab[IDX][11] = FUNCC(PFX ## NUM ## _mc32, depth); \
67  c->PFX ## _pixels_tab[IDX][12] = FUNCC(PFX ## NUM ## _mc03, depth); \
68  c->PFX ## _pixels_tab[IDX][13] = FUNCC(PFX ## NUM ## _mc13, depth); \
69  c->PFX ## _pixels_tab[IDX][14] = FUNCC(PFX ## NUM ## _mc23, depth); \
70  c->PFX ## _pixels_tab[IDX][15] = FUNCC(PFX ## NUM ## _mc33, depth)
71 
72 #define SET_QPEL(depth) \
73  dspfunc2(put_h264_qpel, 0, 16, depth); \
74  dspfunc2(put_h264_qpel, 1, 8, depth); \
75  dspfunc2(put_h264_qpel, 2, 4, depth); \
76  dspfunc2(put_h264_qpel, 3, 2, depth); \
77  dspfunc2(avg_h264_qpel, 0, 16, depth); \
78  dspfunc2(avg_h264_qpel, 1, 8, depth); \
79  dspfunc2(avg_h264_qpel, 2, 4, depth)
80 
81  switch (bit_depth) {
82  default:
83  SET_QPEL(8);
84  break;
85  case 9:
86  SET_QPEL(9);
87  break;
88  case 10:
89  SET_QPEL(10);
90  break;
91  case 12:
92  SET_QPEL(12);
93  break;
94  case 14:
95  SET_QPEL(14);
96  break;
97  }
98 
99  if (ARCH_AARCH64)
100  ff_h264qpel_init_aarch64(c, bit_depth);
101  if (ARCH_ARM)
102  ff_h264qpel_init_arm(c, bit_depth);
103  if (ARCH_PPC)
104  ff_h264qpel_init_ppc(c, bit_depth);
105  if (ARCH_X86)
106  ff_h264qpel_init_x86(c, bit_depth);
107  if (ARCH_MIPS)
108  ff_h264qpel_init_mips(c, bit_depth);
109 }
bit_depth
static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
Definition: af_astats.c:254
h264qpel_template.c
ff_h264qpel_init_arm
av_cold void ff_h264qpel_init_arm(H264QpelContext *c, int bit_depth)
Definition: h264qpel_init_arm.c:97
h264qpel.h
ff_h264qpel_init
av_cold void ff_h264qpel_init(H264QpelContext *c, int bit_depth)
Definition: h264qpel.c:49
av_cold
#define av_cold
Definition: attributes.h:90
SET_QPEL
#define SET_QPEL(depth)
ff_h264qpel_init_ppc
av_cold void ff_h264qpel_init_ppc(H264QpelContext *c, int bit_depth)
Definition: h264qpel.c:282
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
attributes.h
ff_h264qpel_init_aarch64
av_cold void ff_h264qpel_init_aarch64(H264QpelContext *c, int bit_depth)
Definition: h264qpel_init_aarch64.c:98
H264QpelContext
Definition: h264qpel.h:27
ff_h264qpel_init_x86
void ff_h264qpel_init_x86(H264QpelContext *c, int bit_depth)
Definition: h264_qpel.c:540
ff_h264qpel_init_mips
void ff_h264qpel_init_mips(H264QpelContext *c, int bit_depth)
Definition: h264qpel_init_mips.c:241
Generated on Wed Aug 24 2022 21:31:17 for FFmpeg by   doxygen 1.8.17