2 * Copyright (c) 2002 The FFmpeg Project
4 * This file is part of FFmpeg.
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.
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.
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
23 #include "mpegvideo.h"
24 #include "msmpeg4data.h"
25 #include "simple_idct.h"
29 av_cold void ff_wmv2_common_init(Wmv2Context * w){
30 MpegEncContext * const s= &w->s;
32 ff_blockdsp_init(&s->bdsp, s->avctx);
33 ff_wmv2dsp_init(&w->wdsp);
34 s->idsp.idct_permutation_type = w->wdsp.idct_perm;
35 ff_init_scantable_permutation(s->idsp.idct_permutation,
37 ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[0],
39 ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[1],
41 ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable,
42 ff_wmv1_scantable[1]);
43 ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable,
44 ff_wmv1_scantable[2]);
45 ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable,
46 ff_wmv1_scantable[3]);
47 ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable,
48 ff_wmv1_scantable[0]);
49 s->idsp.idct_put = w->wdsp.idct_put;
50 s->idsp.idct_add = w->wdsp.idct_add;
54 static void wmv2_add_block(Wmv2Context *w, int16_t *block1, uint8_t *dst, int stride, int n){
55 MpegEncContext * const s= &w->s;
57 if (s->block_last_index[n] >= 0) {
58 switch(w->abt_type_table[n]){
60 w->wdsp.idct_add(dst, stride, block1);
63 ff_simple_idct84_add(dst , stride, block1);
64 ff_simple_idct84_add(dst + 4*stride, stride, w->abt_block2[n]);
65 s->bdsp.clear_block(w->abt_block2[n]);
68 ff_simple_idct48_add(dst , stride, block1);
69 ff_simple_idct48_add(dst + 4 , stride, w->abt_block2[n]);
70 s->bdsp.clear_block(w->abt_block2[n]);
73 av_log(s->avctx, AV_LOG_ERROR, "internal error in WMV2 abt\n");
78 void ff_wmv2_add_mb(MpegEncContext *s, int16_t block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr){
79 Wmv2Context * const w= (Wmv2Context*)s;
81 wmv2_add_block(w, block1[0], dest_y , s->linesize, 0);
82 wmv2_add_block(w, block1[1], dest_y + 8 , s->linesize, 1);
83 wmv2_add_block(w, block1[2], dest_y + 8*s->linesize, s->linesize, 2);
84 wmv2_add_block(w, block1[3], dest_y + 8 + 8*s->linesize, s->linesize, 3);
86 if(s->flags&CODEC_FLAG_GRAY) return;
88 wmv2_add_block(w, block1[4], dest_cb , s->uvlinesize, 4);
89 wmv2_add_block(w, block1[5], dest_cr , s->uvlinesize, 5);
92 void ff_mspel_motion(MpegEncContext *s,
93 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
94 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
95 int motion_x, int motion_y, int h)
97 Wmv2Context * const w= (Wmv2Context*)s;
99 int dxy, mx, my, src_x, src_y, v_edge_pos;
100 ptrdiff_t offset, linesize, uvlinesize;
103 dxy = ((motion_y & 1) << 1) | (motion_x & 1);
104 dxy = 2*dxy + w->hshift;
105 src_x = s->mb_x * 16 + (motion_x >> 1);
106 src_y = s->mb_y * 16 + (motion_y >> 1);
108 /* WARNING: do no forget half pels */
109 v_edge_pos = s->v_edge_pos;
110 src_x = av_clip(src_x, -16, s->width);
111 src_y = av_clip(src_y, -16, s->height);
113 if(src_x<=-16 || src_x >= s->width)
115 if(src_y<=-16 || src_y >= s->height)
118 linesize = s->linesize;
119 uvlinesize = s->uvlinesize;
120 ptr = ref_picture[0] + (src_y * linesize) + src_x;
122 if(src_x<1 || src_y<1 || src_x + 17 >= s->h_edge_pos
123 || src_y + h+1 >= v_edge_pos){
124 s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
125 ptr - 1 - s->linesize,
126 s->linesize, s->linesize,
128 src_x - 1, src_y - 1,
129 s->h_edge_pos, s->v_edge_pos);
130 ptr= s->edge_emu_buffer + 1 + s->linesize;
134 w->wdsp.put_mspel_pixels_tab[dxy](dest_y, ptr, linesize);
135 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8, ptr + 8, linesize);
136 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 * linesize, ptr + 8 * linesize, linesize);
137 w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 + 8 * linesize, ptr + 8 + 8 * linesize, linesize);
139 if(s->flags&CODEC_FLAG_GRAY) return;
142 if ((motion_x & 3) != 0)
144 if ((motion_y & 3) != 0)
149 src_x = s->mb_x * 8 + mx;
150 src_y = s->mb_y * 8 + my;
151 src_x = av_clip(src_x, -8, s->width >> 1);
152 if (src_x == (s->width >> 1))
154 src_y = av_clip(src_y, -8, s->height >> 1);
155 if (src_y == (s->height >> 1))
157 offset = (src_y * uvlinesize) + src_x;
158 ptr = ref_picture[1] + offset;
160 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
161 s->uvlinesize, s->uvlinesize,
164 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
165 ptr= s->edge_emu_buffer;
167 pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
169 ptr = ref_picture[2] + offset;
171 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
172 s->uvlinesize, s->uvlinesize,
175 s->h_edge_pos >> 1, s->v_edge_pos >> 1);
176 ptr= s->edge_emu_buffer;
178 pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);