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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 #include "libavutil/attributes.h"
30 #include "libavutil/avassert.h"
31 
32 #include "avcodec.h"
33 #include "h264dsp.h"
34 #include "h264idct.h"
35 #include "libavutil/common.h"
36 
37 #define BIT_DEPTH 8
38 #include "h264dsp_template.c"
39 #undef BIT_DEPTH
40 
41 #define BIT_DEPTH 9
42 #include "h264dsp_template.c"
43 #undef BIT_DEPTH
44 
45 #define BIT_DEPTH 10
46 #include "h264dsp_template.c"
47 #undef BIT_DEPTH
48 
49 #define BIT_DEPTH 12
50 #include "h264dsp_template.c"
51 #undef BIT_DEPTH
52 
53 #define BIT_DEPTH 14
54 #include "h264dsp_template.c"
55 #undef BIT_DEPTH
56 
57 #define BIT_DEPTH 8
58 #include "h264addpx_template.c"
59 #undef BIT_DEPTH
60 
61 #define BIT_DEPTH 16
62 #include "h264addpx_template.c"
63 #undef BIT_DEPTH
64 
65 static int h264_find_start_code_candidate_c(const uint8_t *buf, int size)
66 {
67  int i = 0;
68 #if HAVE_FAST_UNALIGNED
69  /* we check i < size instead of i + 3 / 7 because it is
70  * simpler and there must be FF_INPUT_BUFFER_PADDING_SIZE
71  * bytes at the end.
72  */
73 # if HAVE_FAST_64BIT
74  while (i < size &&
75  !((~*(const uint64_t *)(buf + i) &
76  (*(const uint64_t *)(buf + i) - 0x0101010101010101ULL)) &
77  0x8080808080808080ULL))
78  i += 8;
79 # else
80  while (i < size &&
81  !((~*(const uint32_t *)(buf + i) &
82  (*(const uint32_t *)(buf + i) - 0x01010101U)) &
83  0x80808080U))
84  i += 4;
85 # endif
86 #endif
87  for (; i < size; i++)
88  if (!buf[i])
89  break;
90  return i;
91 }
92 
93 av_cold void ff_h264dsp_init(H264DSPContext *c, const int bit_depth,
94  const int chroma_format_idc)
95 {
96 #undef FUNC
97 #define FUNC(a, depth) a ## _ ## depth ## _c
98 
99 #define ADDPX_DSP(depth) \
100  c->h264_add_pixels4_clear = FUNC(ff_h264_add_pixels4, depth);\
101  c->h264_add_pixels8_clear = FUNC(ff_h264_add_pixels8, depth)
102 
103  if (bit_depth > 8 && bit_depth <= 16) {
104  ADDPX_DSP(16);
105  } else {
106  ADDPX_DSP(8);
107  }
108 
109 #define H264_DSP(depth) \
110  c->h264_idct_add= FUNC(ff_h264_idct_add, depth);\
111  c->h264_idct8_add= FUNC(ff_h264_idct8_add, depth);\
112  c->h264_idct_dc_add= FUNC(ff_h264_idct_dc_add, depth);\
113  c->h264_idct8_dc_add= FUNC(ff_h264_idct8_dc_add, depth);\
114  c->h264_idct_add16 = FUNC(ff_h264_idct_add16, depth);\
115  c->h264_idct8_add4 = FUNC(ff_h264_idct8_add4, depth);\
116  if (chroma_format_idc == 1)\
117  c->h264_idct_add8 = FUNC(ff_h264_idct_add8, depth);\
118  else\
119  c->h264_idct_add8 = FUNC(ff_h264_idct_add8_422, depth);\
120  c->h264_idct_add16intra= FUNC(ff_h264_idct_add16intra, depth);\
121  c->h264_luma_dc_dequant_idct= FUNC(ff_h264_luma_dc_dequant_idct, depth);\
122  if (chroma_format_idc == 1)\
123  c->h264_chroma_dc_dequant_idct= FUNC(ff_h264_chroma_dc_dequant_idct, depth);\
124  else\
125  c->h264_chroma_dc_dequant_idct= FUNC(ff_h264_chroma422_dc_dequant_idct, depth);\
126 \
127  c->weight_h264_pixels_tab[0]= FUNC(weight_h264_pixels16, depth);\
128  c->weight_h264_pixels_tab[1]= FUNC(weight_h264_pixels8, depth);\
129  c->weight_h264_pixels_tab[2]= FUNC(weight_h264_pixels4, depth);\
130  c->weight_h264_pixels_tab[3]= FUNC(weight_h264_pixels2, depth);\
131  c->biweight_h264_pixels_tab[0]= FUNC(biweight_h264_pixels16, depth);\
132  c->biweight_h264_pixels_tab[1]= FUNC(biweight_h264_pixels8, depth);\
133  c->biweight_h264_pixels_tab[2]= FUNC(biweight_h264_pixels4, depth);\
134  c->biweight_h264_pixels_tab[3]= FUNC(biweight_h264_pixels2, depth);\
135 \
136  c->h264_v_loop_filter_luma= FUNC(h264_v_loop_filter_luma, depth);\
137  c->h264_h_loop_filter_luma= FUNC(h264_h_loop_filter_luma, depth);\
138  c->h264_h_loop_filter_luma_mbaff= FUNC(h264_h_loop_filter_luma_mbaff, depth);\
139  c->h264_v_loop_filter_luma_intra= FUNC(h264_v_loop_filter_luma_intra, depth);\
140  c->h264_h_loop_filter_luma_intra= FUNC(h264_h_loop_filter_luma_intra, depth);\
141  c->h264_h_loop_filter_luma_mbaff_intra= FUNC(h264_h_loop_filter_luma_mbaff_intra, depth);\
142  c->h264_v_loop_filter_chroma= FUNC(h264_v_loop_filter_chroma, depth);\
143  if (chroma_format_idc == 1)\
144  c->h264_h_loop_filter_chroma= FUNC(h264_h_loop_filter_chroma, depth);\
145  else\
146  c->h264_h_loop_filter_chroma= FUNC(h264_h_loop_filter_chroma422, depth);\
147  if (chroma_format_idc == 1)\
148  c->h264_h_loop_filter_chroma_mbaff= FUNC(h264_h_loop_filter_chroma_mbaff, depth);\
149  else\
150  c->h264_h_loop_filter_chroma_mbaff= FUNC(h264_h_loop_filter_chroma422_mbaff, depth);\
151  c->h264_v_loop_filter_chroma_intra= FUNC(h264_v_loop_filter_chroma_intra, depth);\
152  if (chroma_format_idc == 1)\
153  c->h264_h_loop_filter_chroma_intra= FUNC(h264_h_loop_filter_chroma_intra, depth);\
154  else\
155  c->h264_h_loop_filter_chroma_intra= FUNC(h264_h_loop_filter_chroma422_intra, depth);\
156  if (chroma_format_idc == 1)\
157  c->h264_h_loop_filter_chroma_mbaff_intra= FUNC(h264_h_loop_filter_chroma_mbaff_intra, depth);\
158  else\
159  c->h264_h_loop_filter_chroma_mbaff_intra= FUNC(h264_h_loop_filter_chroma422_mbaff_intra, depth);\
160  c->h264_loop_filter_strength= NULL;
161 
162  switch (bit_depth) {
163  case 9:
164  H264_DSP(9);
165  break;
166  case 10:
167  H264_DSP(10);
168  break;
169  case 12:
170  H264_DSP(12);
171  break;
172  case 14:
173  H264_DSP(14);
174  break;
175  default:
176  av_assert0(bit_depth<=8);
177  H264_DSP(8);
178  break;
179  }
180  c->h264_find_start_code_candidate = h264_find_start_code_candidate_c;
181 
182  if (ARCH_ARM) ff_h264dsp_init_arm(c, bit_depth, chroma_format_idc);
183  if (ARCH_PPC) ff_h264dsp_init_ppc(c, bit_depth, chroma_format_idc);
184  if (ARCH_X86) ff_h264dsp_init_x86(c, bit_depth, chroma_format_idc);
185 }
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