mpegvideo: Move various temporary buffers to a separate context
[libav.git] / libavcodec / wmv2.c
1 /*
2 * Copyright (c) 2002 The Libav Project
3 *
4 * This file is part of Libav.
5 *
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "avcodec.h"
22 #include "idctdsp.h"
23 #include "mpegvideo.h"
24 #include "msmpeg4data.h"
25 #include "simple_idct.h"
26 #include "wmv2.h"
27
28
29 av_cold void ff_wmv2_common_init(Wmv2Context *w)
30 {
31 MpegEncContext *const s = &w->s;
32
33 ff_blockdsp_init(&s->bdsp, s->avctx);
34 ff_wmv2dsp_init(&w->wdsp);
35 s->idsp.perm_type = w->wdsp.idct_perm;
36 ff_init_scantable_permutation(s->idsp.idct_permutation,
37 w->wdsp.idct_perm);
38 ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[0],
39 ff_wmv2_scantableA);
40 ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[1],
41 ff_wmv2_scantableB);
42 ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable,
43 ff_wmv1_scantable[1]);
44 ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable,
45 ff_wmv1_scantable[2]);
46 ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable,
47 ff_wmv1_scantable[3]);
48 ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable,
49 ff_wmv1_scantable[0]);
50 s->idsp.idct_put = w->wdsp.idct_put;
51 s->idsp.idct_add = w->wdsp.idct_add;
52 s->idsp.idct = NULL;
53 }
54
55 static void wmv2_add_block(Wmv2Context *w, int16_t *block1,
56 uint8_t *dst, int stride, int n)
57 {
58 MpegEncContext *const s = &w->s;
59
60 if (s->block_last_index[n] >= 0) {
61 switch (w->abt_type_table[n]) {
62 case 0:
63 w->wdsp.idct_add(dst, stride, block1);
64 break;
65 case 1:
66 ff_simple_idct84_add(dst, stride, block1);
67 ff_simple_idct84_add(dst + 4 * stride, stride, w->abt_block2[n]);
68 s->bdsp.clear_block(w->abt_block2[n]);
69 break;
70 case 2:
71 ff_simple_idct48_add(dst, stride, block1);
72 ff_simple_idct48_add(dst + 4, stride, w->abt_block2[n]);
73 s->bdsp.clear_block(w->abt_block2[n]);
74 break;
75 default:
76 av_log(s->avctx, AV_LOG_ERROR, "internal error in WMV2 abt\n");
77 }
78 }
79 }
80
81 void ff_wmv2_add_mb(MpegEncContext *s, int16_t block1[6][64],
82 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr)
83 {
84 Wmv2Context *const w = (Wmv2Context *) s;
85
86 wmv2_add_block(w, block1[0], dest_y, s->linesize, 0);
87 wmv2_add_block(w, block1[1], dest_y + 8, s->linesize, 1);
88 wmv2_add_block(w, block1[2], dest_y + 8 * s->linesize, s->linesize, 2);
89 wmv2_add_block(w, block1[3], dest_y + 8 + 8 * s->linesize, s->linesize, 3);
90
91 if (s->avctx->flags & CODEC_FLAG_GRAY)
92 return;
93
94 wmv2_add_block(w, block1[4], dest_cb, s->uvlinesize, 4);
95 wmv2_add_block(w, block1[5], dest_cr, s->uvlinesize, 5);
96 }
97
98 void ff_mspel_motion(MpegEncContext *s, uint8_t *dest_y,
99 uint8_t *dest_cb, uint8_t *dest_cr,
100 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
101 int motion_x, int motion_y, int h)
102 {
103 Wmv2Context *const w = (Wmv2Context *) s;
104 uint8_t *ptr;
105 int dxy, offset, mx, my, src_x, src_y, v_edge_pos;
106 ptrdiff_t linesize, uvlinesize;
107 int emu = 0;
108
109 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
110 dxy = 2 * dxy + w->hshift;
111 src_x = s->mb_x * 16 + (motion_x >> 1);
112 src_y = s->mb_y * 16 + (motion_y >> 1);
113
114 /* WARNING: do no forget half pels */
115 v_edge_pos = s->v_edge_pos;
116 src_x = av_clip(src_x, -16, s->width);
117 src_y = av_clip(src_y, -16, s->height);
118
119 if (src_x <= -16 || src_x >= s->width)
120 dxy &= ~3;
121 if (src_y <= -16 || src_y >= s->height)
122 dxy &= ~4;
123
124 linesize = s->linesize;
125 uvlinesize = s->uvlinesize;
126 ptr = ref_picture[0] + (src_y * linesize) + src_x;
127
128 if (src_x < 1 || src_y < 1 || src_x + 17 >= s->h_edge_pos ||
129 src_y + h + 1 >= v_edge_pos) {
130 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr - 1 - s->linesize,
131 s->linesize, s->linesize, 19, 19,
132 src_x - 1, src_y - 1,
133 s->h_edge_pos, s->v_edge_pos);
134 ptr = s->sc.edge_emu_buffer + 1 + s->linesize;
135 emu = 1;
136 }
137
138 w->wdsp.put_mspel_pixels_tab[dxy](dest_y, ptr, linesize);
139 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8, ptr + 8, linesize);
140 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 * linesize, ptr + 8 * linesize, linesize);
141 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 + 8 * linesize, ptr + 8 + 8 * linesize, linesize);
142
143 if (s->avctx->flags & CODEC_FLAG_GRAY)
144 return;
145
146 if (s->out_format == FMT_H263) {
147 dxy = 0;
148 if ((motion_x & 3) != 0)
149 dxy |= 1;
150 if ((motion_y & 3) != 0)
151 dxy |= 2;
152 mx = motion_x >> 2;
153 my = motion_y >> 2;
154 } else {
155 mx = motion_x / 2;
156 my = motion_y / 2;
157 dxy = ((my & 1) << 1) | (mx & 1);
158 mx >>= 1;
159 my >>= 1;
160 }
161
162 src_x = s->mb_x * 8 + mx;
163 src_y = s->mb_y * 8 + my;
164 src_x = av_clip(src_x, -8, s->width >> 1);
165 if (src_x == (s->width >> 1))
166 dxy &= ~1;
167 src_y = av_clip(src_y, -8, s->height >> 1);
168 if (src_y == (s->height >> 1))
169 dxy &= ~2;
170 offset = (src_y * uvlinesize) + src_x;
171 ptr = ref_picture[1] + offset;
172 if (emu) {
173 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
174 s->uvlinesize, s->uvlinesize,
175 9, 9,
176 src_x, src_y,
177 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
178 ptr = s->sc.edge_emu_buffer;
179 }
180 pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
181
182 ptr = ref_picture[2] + offset;
183 if (emu) {
184 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
185 s->uvlinesize, s->uvlinesize,
186 9, 9,
187 src_x, src_y,
188 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
189 ptr = s->sc.edge_emu_buffer;
190 }
191 pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
192 }