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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 / MPEG4 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 "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 static int h264_find_start_code_candidate_c(const uint8_t *buf, int size)
67 {
68  int i = 0;
69 #if HAVE_FAST_UNALIGNED
70  /* we check i < size instead of i + 3 / 7 because it is
71  * simpler and there must be FF_INPUT_BUFFER_PADDING_SIZE
72  * bytes at the end.
73  */
74 # if HAVE_FAST_64BIT
75  while (i < size &&
76  !((~*(const uint64_t *)(buf + i) &
77  (*(const uint64_t *)(buf + i) - 0x0101010101010101ULL)) &
78  0x8080808080808080ULL))
79  i += 8;
80 # else
81  while (i < size &&
82  !((~*(const uint32_t *)(buf + i) &
83  (*(const uint32_t *)(buf + i) - 0x01010101U)) &
84  0x80808080U))
85  i += 4;
86 # endif
87 #endif
88  for (; i < size; i++)
89  if (!buf[i])
90  break;
91  return i;
92 }
93 
94 av_cold void ff_h264dsp_init(H264DSPContext *c, const int bit_depth,
95  const int chroma_format_idc)
96 {
97 #undef FUNC
98 #define FUNC(a, depth) a ## _ ## depth ## _c
99 
100 #define ADDPX_DSP(depth) \
101  c->h264_add_pixels4_clear = FUNC(ff_h264_add_pixels4, depth);\
102  c->h264_add_pixels8_clear = FUNC(ff_h264_add_pixels8, depth)
103 
104  if (bit_depth > 8 && bit_depth <= 16) {
105  ADDPX_DSP(16);
106  } else {
107  ADDPX_DSP(8);
108  }
109 
110 #define H264_DSP(depth) \
111  c->h264_idct_add= FUNC(ff_h264_idct_add, depth);\
112  c->h264_idct8_add= FUNC(ff_h264_idct8_add, depth);\
113  c->h264_idct_dc_add= FUNC(ff_h264_idct_dc_add, depth);\
114  c->h264_idct8_dc_add= FUNC(ff_h264_idct8_dc_add, depth);\
115  c->h264_idct_add16 = FUNC(ff_h264_idct_add16, depth);\
116  c->h264_idct8_add4 = FUNC(ff_h264_idct8_add4, depth);\
117  if (chroma_format_idc <= 1)\
118  c->h264_idct_add8 = FUNC(ff_h264_idct_add8, depth);\
119  else\
120  c->h264_idct_add8 = FUNC(ff_h264_idct_add8_422, depth);\
121  c->h264_idct_add16intra= FUNC(ff_h264_idct_add16intra, depth);\
122  c->h264_luma_dc_dequant_idct= FUNC(ff_h264_luma_dc_dequant_idct, depth);\
123  if (chroma_format_idc <= 1)\
124  c->h264_chroma_dc_dequant_idct= FUNC(ff_h264_chroma_dc_dequant_idct, depth);\
125  else\
126  c->h264_chroma_dc_dequant_idct= FUNC(ff_h264_chroma422_dc_dequant_idct, depth);\
127 \
128  c->weight_h264_pixels_tab[0]= FUNC(weight_h264_pixels16, depth);\
129  c->weight_h264_pixels_tab[1]= FUNC(weight_h264_pixels8, depth);\
130  c->weight_h264_pixels_tab[2]= FUNC(weight_h264_pixels4, depth);\
131  c->weight_h264_pixels_tab[3]= FUNC(weight_h264_pixels2, depth);\
132  c->biweight_h264_pixels_tab[0]= FUNC(biweight_h264_pixels16, depth);\
133  c->biweight_h264_pixels_tab[1]= FUNC(biweight_h264_pixels8, depth);\
134  c->biweight_h264_pixels_tab[2]= FUNC(biweight_h264_pixels4, depth);\
135  c->biweight_h264_pixels_tab[3]= FUNC(biweight_h264_pixels2, depth);\
136 \
137  c->h264_v_loop_filter_luma= FUNC(h264_v_loop_filter_luma, depth);\
138  c->h264_h_loop_filter_luma= FUNC(h264_h_loop_filter_luma, depth);\
139  c->h264_h_loop_filter_luma_mbaff= FUNC(h264_h_loop_filter_luma_mbaff, depth);\
140  c->h264_v_loop_filter_luma_intra= FUNC(h264_v_loop_filter_luma_intra, depth);\
141  c->h264_h_loop_filter_luma_intra= FUNC(h264_h_loop_filter_luma_intra, depth);\
142  c->h264_h_loop_filter_luma_mbaff_intra= FUNC(h264_h_loop_filter_luma_mbaff_intra, depth);\
143  c->h264_v_loop_filter_chroma= FUNC(h264_v_loop_filter_chroma, depth);\
144  if (chroma_format_idc <= 1)\
145  c->h264_h_loop_filter_chroma= FUNC(h264_h_loop_filter_chroma, depth);\
146  else\
147  c->h264_h_loop_filter_chroma= FUNC(h264_h_loop_filter_chroma422, depth);\
148  if (chroma_format_idc <= 1)\
149  c->h264_h_loop_filter_chroma_mbaff= FUNC(h264_h_loop_filter_chroma_mbaff, depth);\
150  else\
151  c->h264_h_loop_filter_chroma_mbaff= FUNC(h264_h_loop_filter_chroma422_mbaff, depth);\
152  c->h264_v_loop_filter_chroma_intra= FUNC(h264_v_loop_filter_chroma_intra, depth);\
153  if (chroma_format_idc <= 1)\
154  c->h264_h_loop_filter_chroma_intra= FUNC(h264_h_loop_filter_chroma_intra, depth);\
155  else\
156  c->h264_h_loop_filter_chroma_intra= FUNC(h264_h_loop_filter_chroma422_intra, depth);\
157  if (chroma_format_idc <= 1)\
158  c->h264_h_loop_filter_chroma_mbaff_intra= FUNC(h264_h_loop_filter_chroma_mbaff_intra, depth);\
159  else\
160  c->h264_h_loop_filter_chroma_mbaff_intra= FUNC(h264_h_loop_filter_chroma422_mbaff_intra, depth);\
161  c->h264_loop_filter_strength= NULL;
162 
163  switch (bit_depth) {
164  case 9:
165  H264_DSP(9);
166  break;
167  case 10:
168  H264_DSP(10);
169  break;
170  case 12:
171  H264_DSP(12);
172  break;
173  case 14:
174  H264_DSP(14);
175  break;
176  default:
177  av_assert0(bit_depth<=8);
178  H264_DSP(8);
179  break;
180  }
181  c->h264_find_start_code_candidate = h264_find_start_code_candidate_c;
182 
183  if (ARCH_AARCH64) ff_h264dsp_init_aarch64(c, bit_depth, chroma_format_idc);
184  if (ARCH_ARM) ff_h264dsp_init_arm(c, bit_depth, chroma_format_idc);
185  if (ARCH_PPC) ff_h264dsp_init_ppc(c, bit_depth, chroma_format_idc);
186  if (ARCH_X86) ff_h264dsp_init_x86(c, bit_depth, chroma_format_idc);
187 }
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