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h264_mc_template.c
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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 #undef MCFUNC
23 
24 #if CHROMA_IDC == 1
25 # define MCFUNC(n) FUNC(n ## _420)
26 #elif CHROMA_IDC == 2
27 # define MCFUNC(n) FUNC(n ## _422)
28 #elif CHROMA_IDC == 3
29 # define MCFUNC(n) FUNC(n ## _444)
30 #endif
31 
32 #undef mc_part
33 #define mc_part MCFUNC(mc_part)
34 
35 static void mc_part(H264Context *h, int n, int square,
36  int height, int delta,
37  uint8_t *dest_y, uint8_t *dest_cb,
38  uint8_t *dest_cr,
39  int x_offset, int y_offset,
40  qpel_mc_func *qpix_put,
41  h264_chroma_mc_func chroma_put,
42  qpel_mc_func *qpix_avg,
43  h264_chroma_mc_func chroma_avg,
44  h264_weight_func *weight_op,
45  h264_biweight_func *weight_avg,
46  int list0, int list1)
47 {
48  if ((h->use_weight == 2 && list0 && list1 &&
49  (h->implicit_weight[h->ref_cache[0][scan8[n]]][h->ref_cache[1][scan8[n]]][h->mb_y & 1] != 32)) ||
50  h->use_weight == 1)
51  mc_part_weighted(h, n, square, height, delta, dest_y, dest_cb, dest_cr,
52  x_offset, y_offset, qpix_put, chroma_put,
53  weight_op[0], weight_op[1], weight_avg[0],
54  weight_avg[1], list0, list1, PIXEL_SHIFT, CHROMA_IDC);
55  else
56  mc_part_std(h, n, square, height, delta, dest_y, dest_cb, dest_cr,
57  x_offset, y_offset, qpix_put, chroma_put, qpix_avg,
58  chroma_avg, list0, list1, PIXEL_SHIFT, CHROMA_IDC);
59 }
60 
61 static void MCFUNC(hl_motion)(H264Context *h, uint8_t *dest_y,
62  uint8_t *dest_cb, uint8_t *dest_cr,
63  qpel_mc_func(*qpix_put)[16],
64  h264_chroma_mc_func(*chroma_put),
65  qpel_mc_func(*qpix_avg)[16],
66  h264_chroma_mc_func(*chroma_avg),
67  h264_weight_func *weight_op,
68  h264_biweight_func *weight_avg)
69 {
70  const int mb_xy = h->mb_xy;
71  const int mb_type = h->cur_pic.f.mb_type[mb_xy];
72 
73  av_assert2(IS_INTER(mb_type));
74 
75  if (HAVE_THREADS && (h->avctx->active_thread_type & FF_THREAD_FRAME))
76  await_references(h);
77  prefetch_motion(h, 0, PIXEL_SHIFT, CHROMA_IDC);
78 
79  if (IS_16X16(mb_type)) {
80  mc_part(h, 0, 1, 16, 0, dest_y, dest_cb, dest_cr, 0, 0,
81  qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
82  weight_op, weight_avg,
83  IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
84  } else if (IS_16X8(mb_type)) {
85  mc_part(h, 0, 0, 8, 8 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr, 0, 0,
86  qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
87  weight_op, weight_avg,
88  IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
89  mc_part(h, 8, 0, 8, 8 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr, 0, 4,
90  qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
91  weight_op, weight_avg,
92  IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
93  } else if (IS_8X16(mb_type)) {
94  mc_part(h, 0, 0, 16, 8 * h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
95  qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
96  &weight_op[1], &weight_avg[1],
97  IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
98  mc_part(h, 4, 0, 16, 8 * h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
99  qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
100  &weight_op[1], &weight_avg[1],
101  IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
102  } else {
103  int i;
104 
105  av_assert2(IS_8X8(mb_type));
106 
107  for (i = 0; i < 4; i++) {
108  const int sub_mb_type = h->sub_mb_type[i];
109  const int n = 4 * i;
110  int x_offset = (i & 1) << 2;
111  int y_offset = (i & 2) << 1;
112 
113  if (IS_SUB_8X8(sub_mb_type)) {
114  mc_part(h, n, 1, 8, 0, dest_y, dest_cb, dest_cr,
115  x_offset, y_offset,
116  qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
117  &weight_op[1], &weight_avg[1],
118  IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
119  } else if (IS_SUB_8X4(sub_mb_type)) {
120  mc_part(h, n, 0, 4, 4 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr,
121  x_offset, y_offset,
122  qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
123  &weight_op[1], &weight_avg[1],
124  IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
125  mc_part(h, n + 2, 0, 4, 4 << PIXEL_SHIFT,
126  dest_y, dest_cb, dest_cr, x_offset, y_offset + 2,
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  } else if (IS_SUB_4X8(sub_mb_type)) {
131  mc_part(h, n, 0, 8, 4 * h->mb_linesize,
132  dest_y, dest_cb, dest_cr, x_offset, y_offset,
133  qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
134  &weight_op[2], &weight_avg[2],
135  IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
136  mc_part(h, n + 1, 0, 8, 4 * h->mb_linesize,
137  dest_y, dest_cb, dest_cr, x_offset + 2, 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  } else {
142  int j;
143  av_assert2(IS_SUB_4X4(sub_mb_type));
144  for (j = 0; j < 4; j++) {
145  int sub_x_offset = x_offset + 2 * (j & 1);
146  int sub_y_offset = y_offset + (j & 2);
147  mc_part(h, n + j, 1, 4, 0,
148  dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
149  qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
150  &weight_op[2], &weight_avg[2],
151  IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
152  }
153  }
154  }
155  }
156 
157  prefetch_motion(h, 1, PIXEL_SHIFT, CHROMA_IDC);
158 }
159 
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