2 * Copyright (C) 2003 Mike Melanson
3 * Copyright (C) 2003 Dr. Tim Ferguson
5 * This file is part of Libav.
7 * Libav 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.
12 * Libav 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.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * id RoQ Video common functions based on work by Dr. Tim Ferguson
30 static inline void block_copy(unsigned char *out, unsigned char *in,
31 int outstride, int instride, int sz)
41 void ff_apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell)
46 stride = ri->current_frame->linesize[0];
49 bptr = ri->current_frame->data[0] + boffs;
50 bptr[0 ] = cell->y[0];
51 bptr[1 ] = cell->y[1];
52 bptr[stride ] = cell->y[2];
53 bptr[stride+1] = cell->y[3];
55 stride = ri->current_frame->linesize[1];
58 bptr = ri->current_frame->data[1] + boffs;
62 bptr[stride+1] = cell->u;
64 bptr = ri->current_frame->data[2] + boffs;
68 bptr[stride+1] = cell->v;
71 void ff_apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell)
76 stride = ri->current_frame->linesize[0];
79 bptr = ri->current_frame->data[0] + boffs;
80 bptr[ 0] = bptr[ 1] = bptr[stride ] = bptr[stride +1] = cell->y[0];
81 bptr[ 2] = bptr[ 3] = bptr[stride +2] = bptr[stride +3] = cell->y[1];
82 bptr[stride*2 ] = bptr[stride*2+1] = bptr[stride*3 ] = bptr[stride*3+1] = cell->y[2];
83 bptr[stride*2+2] = bptr[stride*2+3] = bptr[stride*3+2] = bptr[stride*3+3] = cell->y[3];
85 stride = ri->current_frame->linesize[1];
88 bptr = ri->current_frame->data[1] + boffs;
89 bptr[ 0] = bptr[ 1] = bptr[stride ] = bptr[stride +1] =
90 bptr[ 2] = bptr[ 3] = bptr[stride +2] = bptr[stride +3] =
91 bptr[stride*2 ] = bptr[stride*2+1] = bptr[stride*3 ] = bptr[stride*3+1] =
92 bptr[stride*2+2] = bptr[stride*2+3] = bptr[stride*3+2] = bptr[stride*3+3] = cell->u;
94 bptr = ri->current_frame->data[2] + boffs;
95 bptr[ 0] = bptr[ 1] = bptr[stride ] = bptr[stride +1] =
96 bptr[ 2] = bptr[ 3] = bptr[stride +2] = bptr[stride +3] =
97 bptr[stride*2 ] = bptr[stride*2+1] = bptr[stride*3 ] = bptr[stride*3+1] =
98 bptr[stride*2+2] = bptr[stride*2+3] = bptr[stride*3+2] = bptr[stride*3+3] = cell->v;
102 static inline void apply_motion_generic(RoqContext *ri, int x, int y, int deltax,
110 /* check MV against frame boundaries */
111 if ((mx < 0) || (mx > ri->width - sz) ||
112 (my < 0) || (my > ri->height - sz)) {
113 av_log(ri->avctx, AV_LOG_ERROR, "motion vector out of bounds: MV = (%d, %d), boundaries = (0, 0, %d, %d)\n",
114 mx, my, ri->width, ri->height);
118 if (ri->last_frame->data[0] == NULL) {
119 av_log(ri->avctx, AV_LOG_ERROR, "Invalid decode type. Invalid header?\n");
123 for(cp = 0; cp < 3; cp++) {
124 int outstride = ri->current_frame->linesize[cp];
125 int instride = ri->last_frame ->linesize[cp];
126 block_copy(ri->current_frame->data[cp] + y*outstride + x,
127 ri->last_frame->data[cp] + my*instride + mx,
128 outstride, instride, sz);
133 void ff_apply_motion_4x4(RoqContext *ri, int x, int y,
134 int deltax, int deltay)
136 apply_motion_generic(ri, x, y, deltax, deltay, 4);
139 void ff_apply_motion_8x8(RoqContext *ri, int x, int y,
140 int deltax, int deltay)
142 apply_motion_generic(ri, x, y, deltax, deltay, 8);