/* * Copyright (C) 2003 Mike Melanson * Copyright (C) 2003 Dr. Tim Ferguson * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * id RoQ Video common functions based on work by Dr. Tim Ferguson */ #include <stdint.h> #include <string.h> #include "roqvideo.h" static inline void block_copy(unsigned char *out, unsigned char *in, int outstride, int instride, int sz) { int rows = sz; while(rows--) { memcpy(out, in, sz); out += outstride; in += instride; } } void ff_apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell) { unsigned char *bptr; int boffs,stride; stride = ri->current_frame->linesize[0]; boffs = y*stride + x; bptr = ri->current_frame->data[0] + boffs; bptr[0 ] = cell->y[0]; bptr[1 ] = cell->y[1]; bptr[stride ] = cell->y[2]; bptr[stride+1] = cell->y[3]; stride = ri->current_frame->linesize[1]; boffs = y*stride + x; bptr = ri->current_frame->data[1] + boffs; bptr[0 ] = bptr[1 ] = bptr[stride ] = bptr[stride+1] = cell->u; bptr = ri->current_frame->data[2] + boffs; bptr[0 ] = bptr[1 ] = bptr[stride ] = bptr[stride+1] = cell->v; } void ff_apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell) { unsigned char *bptr; int boffs,stride; stride = ri->current_frame->linesize[0]; boffs = y*stride + x; bptr = ri->current_frame->data[0] + boffs; bptr[ 0] = bptr[ 1] = bptr[stride ] = bptr[stride +1] = cell->y[0]; bptr[ 2] = bptr[ 3] = bptr[stride +2] = bptr[stride +3] = cell->y[1]; bptr[stride*2 ] = bptr[stride*2+1] = bptr[stride*3 ] = bptr[stride*3+1] = cell->y[2]; bptr[stride*2+2] = bptr[stride*2+3] = bptr[stride*3+2] = bptr[stride*3+3] = cell->y[3]; stride = ri->current_frame->linesize[1]; boffs = y*stride + x; bptr = ri->current_frame->data[1] + boffs; bptr[ 0] = bptr[ 1] = bptr[stride ] = bptr[stride +1] = bptr[ 2] = bptr[ 3] = bptr[stride +2] = bptr[stride +3] = bptr[stride*2 ] = bptr[stride*2+1] = bptr[stride*3 ] = bptr[stride*3+1] = bptr[stride*2+2] = bptr[stride*2+3] = bptr[stride*3+2] = bptr[stride*3+3] = cell->u; bptr = ri->current_frame->data[2] + boffs; bptr[ 0] = bptr[ 1] = bptr[stride ] = bptr[stride +1] = bptr[ 2] = bptr[ 3] = bptr[stride +2] = bptr[stride +3] = bptr[stride*2 ] = bptr[stride*2+1] = bptr[stride*3 ] = bptr[stride*3+1] = bptr[stride*2+2] = bptr[stride*2+3] = bptr[stride*3+2] = bptr[stride*3+3] = cell->v; } static inline void apply_motion_generic(RoqContext *ri, int x, int y, int deltax, int deltay, int sz) { int mx, my, cp; mx = x + deltax; my = y + deltay; /* check MV against frame boundaries */ if ((mx < 0) || (mx > ri->width - sz) || (my < 0) || (my > ri->height - sz)) { av_log(ri->avctx, AV_LOG_ERROR, "motion vector out of bounds: MV = (%d, %d), boundaries = (0, 0, %d, %d)\n", mx, my, ri->width, ri->height); return; } if (!ri->last_frame->data[0]) { av_log(ri->avctx, AV_LOG_ERROR, "Invalid decode type. Invalid header?\n"); return; } for(cp = 0; cp < 3; cp++) { int outstride = ri->current_frame->linesize[cp]; int instride = ri->last_frame ->linesize[cp]; block_copy(ri->current_frame->data[cp] + y*outstride + x, ri->last_frame->data[cp] + my*instride + mx, outstride, instride, sz); } } void ff_apply_motion_4x4(RoqContext *ri, int x, int y, int deltax, int deltay) { apply_motion_generic(ri, x, y, deltax, deltay, 4); } void ff_apply_motion_8x8(RoqContext *ri, int x, int y, int deltax, int deltay) { apply_motion_generic(ri, x, y, deltax, deltay, 8); }