1 /*
2 * Copyright (c) 2002 The FFmpeg Project
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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 "mpegutils.h"
24 #include "mpegvideo.h"
25 #include "msmpeg4data.h"
26 #include "simple_idct.h"
27 #include "wmv2.h"
28 #include "wmv2data.h"
29
30
ff_wmv2_common_init(Wmv2Context * w)31 av_cold void ff_wmv2_common_init(Wmv2Context *w)
32 {
33 MpegEncContext *const s = &w->s;
34
35 ff_blockdsp_init(&s->bdsp, s->avctx);
36 ff_wmv2dsp_init(&w->wdsp);
37 s->idsp.perm_type = w->wdsp.idct_perm;
38 ff_init_scantable_permutation(s->idsp.idct_permutation,
39 w->wdsp.idct_perm);
40 ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[0],
41 ff_wmv2_scantableA);
42 ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[1],
43 ff_wmv2_scantableB);
44 ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable,
45 ff_wmv1_scantable[1]);
46 ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable,
47 ff_wmv1_scantable[2]);
48 ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable,
49 ff_wmv1_scantable[3]);
50 ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable,
51 ff_wmv1_scantable[0]);
52 s->idsp.idct_put = w->wdsp.idct_put;
53 s->idsp.idct_add = w->wdsp.idct_add;
54 s->idsp.idct = NULL;
55 }
56
wmv2_add_block(Wmv2Context * w,int16_t * block1,uint8_t * dst,int stride,int n)57 static void wmv2_add_block(Wmv2Context *w, int16_t *block1,
58 uint8_t *dst, int stride, int n)
59 {
60 MpegEncContext *const s = &w->s;
61
62 if (s->block_last_index[n] >= 0) {
63 switch (w->abt_type_table[n]) {
64 case 0:
65 w->wdsp.idct_add(dst, stride, block1);
66 break;
67 case 1:
68 ff_simple_idct84_add(dst, stride, block1);
69 ff_simple_idct84_add(dst + 4 * stride, stride, w->abt_block2[n]);
70 s->bdsp.clear_block(w->abt_block2[n]);
71 break;
72 case 2:
73 ff_simple_idct48_add(dst, stride, block1);
74 ff_simple_idct48_add(dst + 4, stride, w->abt_block2[n]);
75 s->bdsp.clear_block(w->abt_block2[n]);
76 break;
77 default:
78 av_log(s->avctx, AV_LOG_ERROR, "internal error in WMV2 abt\n");
79 }
80 }
81 }
82
ff_wmv2_add_mb(MpegEncContext * s,int16_t block1[6][64],uint8_t * dest_y,uint8_t * dest_cb,uint8_t * dest_cr)83 void ff_wmv2_add_mb(MpegEncContext *s, int16_t block1[6][64],
84 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr)
85 {
86 Wmv2Context *const w = (Wmv2Context *) s;
87
88 wmv2_add_block(w, block1[0], dest_y, s->linesize, 0);
89 wmv2_add_block(w, block1[1], dest_y + 8, s->linesize, 1);
90 wmv2_add_block(w, block1[2], dest_y + 8 * s->linesize, s->linesize, 2);
91 wmv2_add_block(w, block1[3], dest_y + 8 + 8 * s->linesize, s->linesize, 3);
92
93 if (s->avctx->flags & AV_CODEC_FLAG_GRAY)
94 return;
95
96 wmv2_add_block(w, block1[4], dest_cb, s->uvlinesize, 4);
97 wmv2_add_block(w, block1[5], dest_cr, s->uvlinesize, 5);
98 }
99
ff_mspel_motion(MpegEncContext * s,uint8_t * dest_y,uint8_t * dest_cb,uint8_t * dest_cr,uint8_t ** ref_picture,op_pixels_func (* pix_op)[4],int motion_x,int motion_y,int h)100 void ff_mspel_motion(MpegEncContext *s, uint8_t *dest_y,
101 uint8_t *dest_cb, uint8_t *dest_cr,
102 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
103 int motion_x, int motion_y, int h)
104 {
105 Wmv2Context *const w = (Wmv2Context *) s;
106 uint8_t *ptr;
107 int dxy, mx, my, src_x, src_y, v_edge_pos;
108 ptrdiff_t offset, linesize, uvlinesize;
109 int emu = 0;
110
111 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
112 dxy = 2 * dxy + w->hshift;
113 src_x = s->mb_x * 16 + (motion_x >> 1);
114 src_y = s->mb_y * 16 + (motion_y >> 1);
115
116 /* WARNING: do no forget half pels */
117 v_edge_pos = s->v_edge_pos;
118 src_x = av_clip(src_x, -16, s->width);
119 src_y = av_clip(src_y, -16, s->height);
120
121 if (src_x <= -16 || src_x >= s->width)
122 dxy &= ~3;
123 if (src_y <= -16 || src_y >= s->height)
124 dxy &= ~4;
125
126 linesize = s->linesize;
127 uvlinesize = s->uvlinesize;
128 ptr = ref_picture[0] + (src_y * linesize) + src_x;
129
130 if (src_x < 1 || src_y < 1 || src_x + 17 >= s->h_edge_pos ||
131 src_y + h + 1 >= v_edge_pos) {
132 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr - 1 - s->linesize,
133 s->linesize, s->linesize, 19, 19,
134 src_x - 1, src_y - 1,
135 s->h_edge_pos, s->v_edge_pos);
136 ptr = s->sc.edge_emu_buffer + 1 + s->linesize;
137 emu = 1;
138 }
139
140 w->wdsp.put_mspel_pixels_tab[dxy](dest_y, ptr, linesize);
141 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8, ptr + 8, linesize);
142 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 * linesize, ptr + 8 * linesize, linesize);
143 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 + 8 * linesize, ptr + 8 + 8 * linesize, linesize);
144
145 if (s->avctx->flags & AV_CODEC_FLAG_GRAY)
146 return;
147
148 dxy = 0;
149 if ((motion_x & 3) != 0)
150 dxy |= 1;
151 if ((motion_y & 3) != 0)
152 dxy |= 2;
153 mx = motion_x >> 2;
154 my = motion_y >> 2;
155
156 src_x = s->mb_x * 8 + mx;
157 src_y = s->mb_y * 8 + my;
158 src_x = av_clip(src_x, -8, s->width >> 1);
159 if (src_x == (s->width >> 1))
160 dxy &= ~1;
161 src_y = av_clip(src_y, -8, s->height >> 1);
162 if (src_y == (s->height >> 1))
163 dxy &= ~2;
164 offset = (src_y * uvlinesize) + src_x;
165 ptr = ref_picture[1] + offset;
166 if (emu) {
167 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
168 s->uvlinesize, s->uvlinesize,
169 9, 9,
170 src_x, src_y,
171 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
172 ptr = s->sc.edge_emu_buffer;
173 }
174 pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
175
176 ptr = ref_picture[2] + offset;
177 if (emu) {
178 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
179 s->uvlinesize, s->uvlinesize,
180 9, 9,
181 src_x, src_y,
182 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
183 ptr = s->sc.edge_emu_buffer;
184 }
185 pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
186 }
187