FFmpeg
h264dsp.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 /**
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 "avcodec.h"
34 #include "h264dsp.h"
35 #include "h264idct.h"
36 #include "startcode.h"
37 #include "libavutil/common.h"
38 
39 #define BIT_DEPTH 8
40 #include "h264dsp_template.c"
41 #undef BIT_DEPTH
42 
43 #define BIT_DEPTH 9
44 #include "h264dsp_template.c"
45 #undef BIT_DEPTH
46 
47 #define BIT_DEPTH 10
48 #include "h264dsp_template.c"
49 #undef BIT_DEPTH
50 
51 #define BIT_DEPTH 12
52 #include "h264dsp_template.c"
53 #undef BIT_DEPTH
54 
55 #define BIT_DEPTH 14
56 #include "h264dsp_template.c"
57 #undef BIT_DEPTH
58 
59 #define BIT_DEPTH 8
60 #include "h264addpx_template.c"
61 #undef BIT_DEPTH
62 
63 #define BIT_DEPTH 16
64 #include "h264addpx_template.c"
65 #undef BIT_DEPTH
66 
67 av_cold void ff_h264dsp_init(H264DSPContext *c, const int bit_depth,
68  const int chroma_format_idc)
69 {
70 #undef FUNC
71 #define FUNC(a, depth) a ## _ ## depth ## _c
72 
73 #define ADDPX_DSP(depth) \
74  c->h264_add_pixels4_clear = FUNC(ff_h264_add_pixels4, depth);\
75  c->h264_add_pixels8_clear = FUNC(ff_h264_add_pixels8, depth)
76 
77  if (bit_depth > 8 && bit_depth <= 16) {
78  ADDPX_DSP(16);
79  } else {
80  ADDPX_DSP(8);
81  }
82 
83 #define H264_DSP(depth) \
84  c->h264_idct_add= FUNC(ff_h264_idct_add, depth);\
85  c->h264_idct8_add= FUNC(ff_h264_idct8_add, depth);\
86  c->h264_idct_dc_add= FUNC(ff_h264_idct_dc_add, depth);\
87  c->h264_idct8_dc_add= FUNC(ff_h264_idct8_dc_add, depth);\
88  c->h264_idct_add16 = FUNC(ff_h264_idct_add16, depth);\
89  c->h264_idct8_add4 = FUNC(ff_h264_idct8_add4, depth);\
90  if (chroma_format_idc <= 1)\
91  c->h264_idct_add8 = FUNC(ff_h264_idct_add8, depth);\
92  else\
93  c->h264_idct_add8 = FUNC(ff_h264_idct_add8_422, depth);\
94  c->h264_idct_add16intra= FUNC(ff_h264_idct_add16intra, depth);\
95  c->h264_luma_dc_dequant_idct= FUNC(ff_h264_luma_dc_dequant_idct, depth);\
96  if (chroma_format_idc <= 1)\
97  c->h264_chroma_dc_dequant_idct= FUNC(ff_h264_chroma_dc_dequant_idct, depth);\
98  else\
99  c->h264_chroma_dc_dequant_idct= FUNC(ff_h264_chroma422_dc_dequant_idct, depth);\
100 \
101  c->weight_h264_pixels_tab[0]= FUNC(weight_h264_pixels16, depth);\
102  c->weight_h264_pixels_tab[1]= FUNC(weight_h264_pixels8, depth);\
103  c->weight_h264_pixels_tab[2]= FUNC(weight_h264_pixels4, depth);\
104  c->weight_h264_pixels_tab[3]= FUNC(weight_h264_pixels2, depth);\
105  c->biweight_h264_pixels_tab[0]= FUNC(biweight_h264_pixels16, depth);\
106  c->biweight_h264_pixels_tab[1]= FUNC(biweight_h264_pixels8, depth);\
107  c->biweight_h264_pixels_tab[2]= FUNC(biweight_h264_pixels4, depth);\
108  c->biweight_h264_pixels_tab[3]= FUNC(biweight_h264_pixels2, depth);\
109 \
110  c->h264_v_loop_filter_luma= FUNC(h264_v_loop_filter_luma, depth);\
111  c->h264_h_loop_filter_luma= FUNC(h264_h_loop_filter_luma, depth);\
112  c->h264_h_loop_filter_luma_mbaff= FUNC(h264_h_loop_filter_luma_mbaff, depth);\
113  c->h264_v_loop_filter_luma_intra= FUNC(h264_v_loop_filter_luma_intra, depth);\
114  c->h264_h_loop_filter_luma_intra= FUNC(h264_h_loop_filter_luma_intra, depth);\
115  c->h264_h_loop_filter_luma_mbaff_intra= FUNC(h264_h_loop_filter_luma_mbaff_intra, depth);\
116  c->h264_v_loop_filter_chroma= FUNC(h264_v_loop_filter_chroma, depth);\
117  if (chroma_format_idc <= 1)\
118  c->h264_h_loop_filter_chroma= FUNC(h264_h_loop_filter_chroma, depth);\
119  else\
120  c->h264_h_loop_filter_chroma= FUNC(h264_h_loop_filter_chroma422, depth);\
121  if (chroma_format_idc <= 1)\
122  c->h264_h_loop_filter_chroma_mbaff= FUNC(h264_h_loop_filter_chroma_mbaff, depth);\
123  else\
124  c->h264_h_loop_filter_chroma_mbaff= FUNC(h264_h_loop_filter_chroma422_mbaff, depth);\
125  c->h264_v_loop_filter_chroma_intra= FUNC(h264_v_loop_filter_chroma_intra, depth);\
126  if (chroma_format_idc <= 1)\
127  c->h264_h_loop_filter_chroma_intra= FUNC(h264_h_loop_filter_chroma_intra, depth);\
128  else\
129  c->h264_h_loop_filter_chroma_intra= FUNC(h264_h_loop_filter_chroma422_intra, depth);\
130  if (chroma_format_idc <= 1)\
131  c->h264_h_loop_filter_chroma_mbaff_intra= FUNC(h264_h_loop_filter_chroma_mbaff_intra, depth);\
132  else\
133  c->h264_h_loop_filter_chroma_mbaff_intra= FUNC(h264_h_loop_filter_chroma422_mbaff_intra, depth);\
134  c->h264_loop_filter_strength= NULL;
135 
136  switch (bit_depth) {
137  case 9:
138  H264_DSP(9);
139  break;
140  case 10:
141  H264_DSP(10);
142  break;
143  case 12:
144  H264_DSP(12);
145  break;
146  case 14:
147  H264_DSP(14);
148  break;
149  default:
150  av_assert0(bit_depth<=8);
151  H264_DSP(8);
152  break;
153  }
154  c->startcode_find_candidate = ff_startcode_find_candidate_c;
155 
156  if (ARCH_AARCH64) ff_h264dsp_init_aarch64(c, bit_depth, chroma_format_idc);
157  if (ARCH_ARM) ff_h264dsp_init_arm(c, bit_depth, chroma_format_idc);
158  if (ARCH_PPC) ff_h264dsp_init_ppc(c, bit_depth, chroma_format_idc);
159  if (ARCH_X86) ff_h264dsp_init_x86(c, bit_depth, chroma_format_idc);
160  if (ARCH_MIPS) ff_h264dsp_init_mips(c, bit_depth, chroma_format_idc);
161 }
bit_depth
static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
Definition: af_astats.c:254
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:25
ff_startcode_find_candidate_c
int ff_startcode_find_candidate_c(const uint8_t *buf, int size)
Definition: startcode.c:31
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:37
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
avcodec.h
ff_h264dsp_init
av_cold void ff_h264dsp_init(H264DSPContext *c, const int bit_depth, const int chroma_format_idc)
Definition: h264dsp.c:67
ff_h264dsp_init_x86
void ff_h264dsp_init_x86(H264DSPContext *c, const int bit_depth, const int chroma_format_idc)
Definition: h264dsp_init.c:228
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:86
H264_DSP
#define H264_DSP(depth)
Generated on Wed Aug 24 2022 21:33:57 for FFmpeg by   doxygen 1.8.17