a901dbb9e1da4555db33757d8934627fb34ab3d6
[ffmpeg.git] / libavcodec / h264dsp.c
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 Libav.
6  *
7  * Libav 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  * Libav 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 Libav; 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 "avcodec.h"
32 #include "h264dsp.h"
33 #include "h264idct.h"
34 #include "libavutil/common.h"
35
36 #define BIT_DEPTH 8
37 #include "h264dsp_template.c"
38 #undef BIT_DEPTH
39
40 #define BIT_DEPTH 9
41 #include "h264dsp_template.c"
42 #undef BIT_DEPTH
43
44 #define BIT_DEPTH 10
45 #include "h264dsp_template.c"
46 #undef BIT_DEPTH
47
48 #define BIT_DEPTH 8
49 #include "h264addpx_template.c"
50 #undef BIT_DEPTH
51
52 #define BIT_DEPTH 16
53 #include "h264addpx_template.c"
54 #undef BIT_DEPTH
55
56 static int h264_find_start_code_candidate_c(const uint8_t *buf, int size)
57 {
58     int i = 0;
59 #if HAVE_FAST_UNALIGNED
60     /* we check i < size instead of i + 3 / 7 because it is
61      * simpler and there must be FF_INPUT_BUFFER_PADDING_SIZE
62      * bytes at the end.
63      */
64 #if HAVE_FAST_64BIT
65     while (i < size &&
66             !((~*(const uint64_t *)(buf + i) &
67                     (*(const uint64_t *)(buf + i) - 0x0101010101010101ULL)) &
68                     0x8080808080808080ULL))
69         i += 8;
70 #else
71     while (i < size &&
72             !((~*(const uint32_t *)(buf + i) &
73                     (*(const uint32_t *)(buf + i) - 0x01010101U)) &
74                     0x80808080U))
75         i += 4;
76 #endif
77 #endif
78     for (; i < size; i++)
79         if (!buf[i])
80             break;
81     return i;
82 }
83
84 av_cold void ff_h264dsp_init(H264DSPContext *c, const int bit_depth,
85                              const int chroma_format_idc)
86 {
87 #undef FUNC
88 #define FUNC(a, depth) a ## _ ## depth ## _c
89
90 #define ADDPX_DSP(depth) \
91     c->h264_add_pixels4_clear = FUNC(ff_h264_add_pixels4, depth);\
92     c->h264_add_pixels8_clear = FUNC(ff_h264_add_pixels8, depth)
93
94     if (bit_depth > 8 && bit_depth <= 16) {
95         ADDPX_DSP(16);
96     } else {
97         ADDPX_DSP(8);
98     }
99
100 #define H264_DSP(depth) \
101     c->h264_idct_add= FUNC(ff_h264_idct_add, depth);\
102     c->h264_idct8_add= FUNC(ff_h264_idct8_add, depth);\
103     c->h264_idct_dc_add= FUNC(ff_h264_idct_dc_add, depth);\
104     c->h264_idct8_dc_add= FUNC(ff_h264_idct8_dc_add, depth);\
105     c->h264_idct_add16     = FUNC(ff_h264_idct_add16, depth);\
106     c->h264_idct8_add4     = FUNC(ff_h264_idct8_add4, depth);\
107     if (chroma_format_idc == 1)\
108         c->h264_idct_add8  = FUNC(ff_h264_idct_add8, depth);\
109     else\
110         c->h264_idct_add8  = FUNC(ff_h264_idct_add8_422, depth);\
111     c->h264_idct_add16intra= FUNC(ff_h264_idct_add16intra, depth);\
112     c->h264_luma_dc_dequant_idct= FUNC(ff_h264_luma_dc_dequant_idct, depth);\
113     if (chroma_format_idc == 1)\
114         c->h264_chroma_dc_dequant_idct= FUNC(ff_h264_chroma_dc_dequant_idct, depth);\
115     else\
116         c->h264_chroma_dc_dequant_idct= FUNC(ff_h264_chroma422_dc_dequant_idct, depth);\
117 \
118     c->weight_h264_pixels_tab[0]= FUNC(weight_h264_pixels16, depth);\
119     c->weight_h264_pixels_tab[1]= FUNC(weight_h264_pixels8, depth);\
120     c->weight_h264_pixels_tab[2]= FUNC(weight_h264_pixels4, depth);\
121     c->weight_h264_pixels_tab[3]= FUNC(weight_h264_pixels2, depth);\
122     c->biweight_h264_pixels_tab[0]= FUNC(biweight_h264_pixels16, depth);\
123     c->biweight_h264_pixels_tab[1]= FUNC(biweight_h264_pixels8, depth);\
124     c->biweight_h264_pixels_tab[2]= FUNC(biweight_h264_pixels4, depth);\
125     c->biweight_h264_pixels_tab[3]= FUNC(biweight_h264_pixels2, depth);\
126 \
127     c->h264_v_loop_filter_luma= FUNC(h264_v_loop_filter_luma, depth);\
128     c->h264_h_loop_filter_luma= FUNC(h264_h_loop_filter_luma, depth);\
129     c->h264_h_loop_filter_luma_mbaff= FUNC(h264_h_loop_filter_luma_mbaff, depth);\
130     c->h264_v_loop_filter_luma_intra= FUNC(h264_v_loop_filter_luma_intra, depth);\
131     c->h264_h_loop_filter_luma_intra= FUNC(h264_h_loop_filter_luma_intra, depth);\
132     c->h264_h_loop_filter_luma_mbaff_intra= FUNC(h264_h_loop_filter_luma_mbaff_intra, depth);\
133     c->h264_v_loop_filter_chroma= FUNC(h264_v_loop_filter_chroma, depth);\
134     if (chroma_format_idc == 1)\
135         c->h264_h_loop_filter_chroma= FUNC(h264_h_loop_filter_chroma, depth);\
136     else\
137         c->h264_h_loop_filter_chroma= FUNC(h264_h_loop_filter_chroma422, depth);\
138     if (chroma_format_idc == 1)\
139         c->h264_h_loop_filter_chroma_mbaff= FUNC(h264_h_loop_filter_chroma_mbaff, depth);\
140     else\
141         c->h264_h_loop_filter_chroma_mbaff= FUNC(h264_h_loop_filter_chroma422_mbaff, depth);\
142     c->h264_v_loop_filter_chroma_intra= FUNC(h264_v_loop_filter_chroma_intra, depth);\
143     if (chroma_format_idc == 1)\
144         c->h264_h_loop_filter_chroma_intra= FUNC(h264_h_loop_filter_chroma_intra, depth);\
145     else\
146         c->h264_h_loop_filter_chroma_intra= FUNC(h264_h_loop_filter_chroma422_intra, depth);\
147     if (chroma_format_idc == 1)\
148         c->h264_h_loop_filter_chroma_mbaff_intra= FUNC(h264_h_loop_filter_chroma_mbaff_intra, depth);\
149     else\
150         c->h264_h_loop_filter_chroma_mbaff_intra= FUNC(h264_h_loop_filter_chroma422_mbaff_intra, depth);\
151     c->h264_loop_filter_strength= NULL;
152
153     switch (bit_depth) {
154     case 9:
155         H264_DSP(9);
156         break;
157     case 10:
158         H264_DSP(10);
159         break;
160     default:
161         H264_DSP(8);
162         break;
163     }
164     c->h264_find_start_code_candidate = h264_find_start_code_candidate_c;
165
166     if (ARCH_ARM) ff_h264dsp_init_arm(c, bit_depth, chroma_format_idc);
167     if (ARCH_PPC) ff_h264dsp_init_ppc(c, bit_depth, chroma_format_idc);
168     if (ARCH_X86) ff_h264dsp_init_x86(c, bit_depth, chroma_format_idc);
169 }