FFmpeg
h264dsp.c
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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 /**
23  * @file
24  * H.264 / AVC / MPEG-4 part10 DSP functions.
25  * @author Michael Niedermayer <michaelni@gmx.at>
26  */
27 
28 #include <stdint.h>
29 
30 #include "libavutil/attributes.h"
31 #include "libavutil/avassert.h"
32 
33 #include "h264dsp.h"
34 #include "h264idct.h"
35 #include "startcode.h"
36 #include "libavutil/common.h"
37 
38 #define BIT_DEPTH 8
39 #include "h264dsp_template.c"
40 #undef BIT_DEPTH
41 
42 #define BIT_DEPTH 9
43 #include "h264dsp_template.c"
44 #undef BIT_DEPTH
45 
46 #define BIT_DEPTH 10
47 #include "h264dsp_template.c"
48 #undef BIT_DEPTH
49 
50 #define BIT_DEPTH 12
51 #include "h264dsp_template.c"
52 #undef BIT_DEPTH
53 
54 #define BIT_DEPTH 14
55 #include "h264dsp_template.c"
56 #undef BIT_DEPTH
57 
58 #define BIT_DEPTH 8
59 #include "h264addpx_template.c"
60 #undef BIT_DEPTH
61 
62 #define BIT_DEPTH 16
63 #include "h264addpx_template.c"
64 #undef BIT_DEPTH
65 
66 av_cold void ff_h264dsp_init(H264DSPContext *c, const int bit_depth,
67  const int chroma_format_idc)
68 {
69 #undef FUNC
70 #define FUNC(a, depth) a ## _ ## depth ## _c
71 
72 #define ADDPX_DSP(depth) \
73  c->h264_add_pixels4_clear = FUNC(ff_h264_add_pixels4, depth);\
74  c->h264_add_pixels8_clear = FUNC(ff_h264_add_pixels8, depth)
75 
76  if (bit_depth > 8 && bit_depth <= 16) {
77  ADDPX_DSP(16);
78  } else {
79  ADDPX_DSP(8);
80  }
81 
82 #define H264_DSP(depth) \
83  c->h264_idct_add= FUNC(ff_h264_idct_add, depth);\
84  c->h264_idct8_add= FUNC(ff_h264_idct8_add, depth);\
85  c->h264_idct_dc_add= FUNC(ff_h264_idct_dc_add, depth);\
86  c->h264_idct8_dc_add= FUNC(ff_h264_idct8_dc_add, depth);\
87  c->h264_idct_add16 = FUNC(ff_h264_idct_add16, depth);\
88  c->h264_idct8_add4 = FUNC(ff_h264_idct8_add4, depth);\
89  if (chroma_format_idc <= 1)\
90  c->h264_idct_add8 = FUNC(ff_h264_idct_add8, depth);\
91  else\
92  c->h264_idct_add8 = FUNC(ff_h264_idct_add8_422, depth);\
93  c->h264_idct_add16intra= FUNC(ff_h264_idct_add16intra, depth);\
94  c->h264_luma_dc_dequant_idct= FUNC(ff_h264_luma_dc_dequant_idct, depth);\
95  if (chroma_format_idc <= 1)\
96  c->h264_chroma_dc_dequant_idct= FUNC(ff_h264_chroma_dc_dequant_idct, depth);\
97  else\
98  c->h264_chroma_dc_dequant_idct= FUNC(ff_h264_chroma422_dc_dequant_idct, depth);\
99 \
100  c->weight_h264_pixels_tab[0]= FUNC(weight_h264_pixels16, depth);\
101  c->weight_h264_pixels_tab[1]= FUNC(weight_h264_pixels8, depth);\
102  c->weight_h264_pixels_tab[2]= FUNC(weight_h264_pixels4, depth);\
103  c->weight_h264_pixels_tab[3]= FUNC(weight_h264_pixels2, depth);\
104  c->biweight_h264_pixels_tab[0]= FUNC(biweight_h264_pixels16, depth);\
105  c->biweight_h264_pixels_tab[1]= FUNC(biweight_h264_pixels8, depth);\
106  c->biweight_h264_pixels_tab[2]= FUNC(biweight_h264_pixels4, depth);\
107  c->biweight_h264_pixels_tab[3]= FUNC(biweight_h264_pixels2, depth);\
108 \
109  c->h264_v_loop_filter_luma= FUNC(h264_v_loop_filter_luma, depth);\
110  c->h264_h_loop_filter_luma= FUNC(h264_h_loop_filter_luma, depth);\
111  c->h264_h_loop_filter_luma_mbaff= FUNC(h264_h_loop_filter_luma_mbaff, depth);\
112  c->h264_v_loop_filter_luma_intra= FUNC(h264_v_loop_filter_luma_intra, depth);\
113  c->h264_h_loop_filter_luma_intra= FUNC(h264_h_loop_filter_luma_intra, depth);\
114  c->h264_h_loop_filter_luma_mbaff_intra= FUNC(h264_h_loop_filter_luma_mbaff_intra, depth);\
115  c->h264_v_loop_filter_chroma= FUNC(h264_v_loop_filter_chroma, depth);\
116  if (chroma_format_idc <= 1)\
117  c->h264_h_loop_filter_chroma= FUNC(h264_h_loop_filter_chroma, depth);\
118  else\
119  c->h264_h_loop_filter_chroma= FUNC(h264_h_loop_filter_chroma422, depth);\
120  if (chroma_format_idc <= 1)\
121  c->h264_h_loop_filter_chroma_mbaff= FUNC(h264_h_loop_filter_chroma_mbaff, depth);\
122  else\
123  c->h264_h_loop_filter_chroma_mbaff= FUNC(h264_h_loop_filter_chroma422_mbaff, depth);\
124  c->h264_v_loop_filter_chroma_intra= FUNC(h264_v_loop_filter_chroma_intra, depth);\
125  if (chroma_format_idc <= 1)\
126  c->h264_h_loop_filter_chroma_intra= FUNC(h264_h_loop_filter_chroma_intra, depth);\
127  else\
128  c->h264_h_loop_filter_chroma_intra= FUNC(h264_h_loop_filter_chroma422_intra, depth);\
129  if (chroma_format_idc <= 1)\
130  c->h264_h_loop_filter_chroma_mbaff_intra= FUNC(h264_h_loop_filter_chroma_mbaff_intra, depth);\
131  else\
132  c->h264_h_loop_filter_chroma_mbaff_intra= FUNC(h264_h_loop_filter_chroma422_mbaff_intra, depth);\
133  c->h264_loop_filter_strength= NULL;
134 
135  switch (bit_depth) {
136  case 9:
137  H264_DSP(9);
138  break;
139  case 10:
140  H264_DSP(10);
141  break;
142  case 12:
143  H264_DSP(12);
144  break;
145  case 14:
146  H264_DSP(14);
147  break;
148  default:
149  av_assert0(bit_depth<=8);
150  H264_DSP(8);
151  break;
152  }
153  c->startcode_find_candidate = ff_startcode_find_candidate_c;
154 
155 #if ARCH_AARCH64
156  ff_h264dsp_init_aarch64(c, bit_depth, chroma_format_idc);
157 #elif ARCH_ARM
158  ff_h264dsp_init_arm(c, bit_depth, chroma_format_idc);
159 #elif ARCH_PPC
160  ff_h264dsp_init_ppc(c, bit_depth, chroma_format_idc);
161 #elif ARCH_X86
162  ff_h264dsp_init_x86(c, bit_depth, chroma_format_idc);
163 #elif ARCH_MIPS
164  ff_h264dsp_init_mips(c, bit_depth, chroma_format_idc);
165 #elif ARCH_LOONGARCH
166  ff_h264dsp_init_loongarch(c, bit_depth, chroma_format_idc);
167 #endif
168 }
ff_h264dsp_init_mips
void ff_h264dsp_init_mips(H264DSPContext *c, const int bit_depth, const int chroma_format_idc)
Definition: h264dsp_init_mips.c:26
ff_startcode_find_candidate_c
int ff_startcode_find_candidate_c(const uint8_t *buf, int size)
Definition: startcode.c:32
bit_depth
static void bit_depth(AudioStatsContext *s, const uint64_t *const mask, uint8_t *depth)
Definition: af_astats.c:245
ff_h264dsp_init_loongarch
void ff_h264dsp_init_loongarch(H264DSPContext *c, const int bit_depth, const int chroma_format_idc)
Definition: h264dsp_init_loongarch.c:26
ff_h264dsp_init_arm
av_cold void ff_h264dsp_init_arm(H264DSPContext *c, const int bit_depth, const int chroma_format_idc)
Definition: h264dsp_init_arm.c:109
avassert.h
av_cold
#define av_cold
Definition: attributes.h:90
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:40
h264idct.h
h264dsp.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
h264dsp_template.c
startcode.h
H264DSPContext
Context for storing H.264 DSP functions.
Definition: h264dsp.h:42
attributes.h
common.h
ADDPX_DSP
#define ADDPX_DSP(depth)
ff_h264dsp_init_ppc
av_cold void ff_h264dsp_init_ppc(H264DSPContext *c, const int bit_depth, const int chroma_format_idc)
Definition: h264dsp.c:789
ff_h264dsp_init
av_cold void ff_h264dsp_init(H264DSPContext *c, const int bit_depth, const int chroma_format_idc)
Definition: h264dsp.c:66
ff_h264dsp_init_x86
void ff_h264dsp_init_x86(H264DSPContext *c, const int bit_depth, const int chroma_format_idc)
Definition: h264dsp_init.c:190
h264addpx_template.c
ff_h264dsp_init_aarch64
av_cold void ff_h264dsp_init_aarch64(H264DSPContext *c, const int bit_depth, const int chroma_format_idc)
Definition: h264dsp_init_aarch64.c:109
H264_DSP
#define H264_DSP(depth)
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