1 /*
2 * H.26L/H.264/AVC/JVT/14496-10/... decoder
3 * Copyright (c) 2003 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 #include "h264dec.h"
23
24 #undef MCFUNC
25
26 #if CHROMA_IDC == 1
27 # define MCFUNC(n) FUNC(n ## _420)
28 #elif CHROMA_IDC == 2
29 # define MCFUNC(n) FUNC(n ## _422)
30 #elif CHROMA_IDC == 3
31 # define MCFUNC(n) FUNC(n ## _444)
32 #endif
33
34 #undef mc_part
35 #define mc_part MCFUNC(mc_part)
36
mc_part(const H264Context * h,H264SliceContext * sl,int n,int square,int height,int delta,uint8_t * dest_y,uint8_t * dest_cb,uint8_t * dest_cr,int x_offset,int y_offset,const qpel_mc_func * qpix_put,h264_chroma_mc_func chroma_put,const qpel_mc_func * qpix_avg,h264_chroma_mc_func chroma_avg,const h264_weight_func * weight_op,const h264_biweight_func * weight_avg,int list0,int list1)37 static void mc_part(const H264Context *h, H264SliceContext *sl,
38 int n, int square,
39 int height, int delta,
40 uint8_t *dest_y, uint8_t *dest_cb,
41 uint8_t *dest_cr,
42 int x_offset, int y_offset,
43 const qpel_mc_func *qpix_put,
44 h264_chroma_mc_func chroma_put,
45 const qpel_mc_func *qpix_avg,
46 h264_chroma_mc_func chroma_avg,
47 const h264_weight_func *weight_op,
48 const h264_biweight_func *weight_avg,
49 int list0, int list1)
50 {
51 if ((sl->pwt.use_weight == 2 && list0 && list1 &&
52 (sl->pwt.implicit_weight[sl->ref_cache[0][scan8[n]]][sl->ref_cache[1][scan8[n]]][sl->mb_y & 1] != 32)) ||
53 sl->pwt.use_weight == 1)
54 mc_part_weighted(h, sl, n, square, height, delta, dest_y, dest_cb, dest_cr,
55 x_offset, y_offset, qpix_put, chroma_put,
56 weight_op[0], weight_op[1], weight_avg[0],
57 weight_avg[1], list0, list1, PIXEL_SHIFT, CHROMA_IDC);
58 else
59 mc_part_std(h, sl, n, square, height, delta, dest_y, dest_cb, dest_cr,
60 x_offset, y_offset, qpix_put, chroma_put, qpix_avg,
61 chroma_avg, list0, list1, PIXEL_SHIFT, CHROMA_IDC);
62 }
63
MCFUNC(hl_motion)64 static void MCFUNC(hl_motion)(const H264Context *h, H264SliceContext *sl,
65 uint8_t *dest_y,
66 uint8_t *dest_cb, uint8_t *dest_cr,
67 const qpel_mc_func(*qpix_put)[16],
68 const h264_chroma_mc_func(*chroma_put),
69 const qpel_mc_func(*qpix_avg)[16],
70 const h264_chroma_mc_func(*chroma_avg),
71 const h264_weight_func *weight_op,
72 const h264_biweight_func *weight_avg)
73 {
74 const int mb_xy = sl->mb_xy;
75 const int mb_type = h->cur_pic.mb_type[mb_xy];
76
77 av_assert2(IS_INTER(mb_type));
78
79 if (HAVE_THREADS && (h->avctx->active_thread_type & FF_THREAD_FRAME))
80 await_references(h, sl);
81 if (USES_LIST(mb_type, 0))
82 prefetch_motion(h, sl, 0, PIXEL_SHIFT, CHROMA_IDC);
83
84 if (IS_16X16(mb_type)) {
85 mc_part(h, sl, 0, 1, 16, 0, dest_y, dest_cb, dest_cr, 0, 0,
86 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
87 weight_op, weight_avg,
88 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
89 } else if (IS_16X8(mb_type)) {
90 mc_part(h, sl, 0, 0, 8, 8 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr, 0, 0,
91 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
92 weight_op, weight_avg,
93 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
94 mc_part(h, sl, 8, 0, 8, 8 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr, 0, 4,
95 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
96 weight_op, weight_avg,
97 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
98 } else if (IS_8X16(mb_type)) {
99 mc_part(h, sl, 0, 0, 16, 8 * sl->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
100 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
101 &weight_op[1], &weight_avg[1],
102 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
103 mc_part(h, sl, 4, 0, 16, 8 * sl->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
104 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
105 &weight_op[1], &weight_avg[1],
106 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
107 } else {
108 int i;
109
110 av_assert2(IS_8X8(mb_type));
111
112 for (i = 0; i < 4; i++) {
113 const int sub_mb_type = sl->sub_mb_type[i];
114 const int n = 4 * i;
115 int x_offset = (i & 1) << 2;
116 int y_offset = (i & 2) << 1;
117
118 if (IS_SUB_8X8(sub_mb_type)) {
119 mc_part(h, sl, n, 1, 8, 0, dest_y, dest_cb, dest_cr,
120 x_offset, y_offset,
121 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
122 &weight_op[1], &weight_avg[1],
123 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
124 } else if (IS_SUB_8X4(sub_mb_type)) {
125 mc_part(h, sl, n, 0, 4, 4 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr,
126 x_offset, y_offset,
127 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
128 &weight_op[1], &weight_avg[1],
129 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
130 mc_part(h, sl, n + 2, 0, 4, 4 << PIXEL_SHIFT,
131 dest_y, dest_cb, dest_cr, x_offset, y_offset + 2,
132 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
133 &weight_op[1], &weight_avg[1],
134 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
135 } else if (IS_SUB_4X8(sub_mb_type)) {
136 mc_part(h, sl, n, 0, 8, 4 * sl->mb_linesize,
137 dest_y, dest_cb, dest_cr, x_offset, y_offset,
138 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
139 &weight_op[2], &weight_avg[2],
140 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
141 mc_part(h, sl, n + 1, 0, 8, 4 * sl->mb_linesize,
142 dest_y, dest_cb, dest_cr, x_offset + 2, y_offset,
143 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
144 &weight_op[2], &weight_avg[2],
145 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
146 } else {
147 int j;
148 av_assert2(IS_SUB_4X4(sub_mb_type));
149 for (j = 0; j < 4; j++) {
150 int sub_x_offset = x_offset + 2 * (j & 1);
151 int sub_y_offset = y_offset + (j & 2);
152 mc_part(h, sl, n + j, 1, 4, 0,
153 dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
154 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
155 &weight_op[2], &weight_avg[2],
156 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
157 }
158 }
159 }
160 }
161
162 if (USES_LIST(mb_type, 1))
163 prefetch_motion(h, sl, 1, PIXEL_SHIFT, CHROMA_IDC);
164 }
165
166