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https://github.com/game-stop/veejay.git
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Initial checkin of veejay 1.4
git-svn-id: svn://code.dyne.org/veejay/trunk@1172 eb8d1916-c9e9-0310-b8de-cf0c9472ead5
This commit is contained in:
Niels Elburg
183
veejay-current/veejay-server/libvje/effects/dices.c
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183
veejay-current/veejay-server/libvje/effects/dices.c
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/*
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* Linux VeeJay
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*
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* Copyright(C)2002 Niels Elburg <elburg@hio.hen.nl>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License , or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307 , USA.
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*
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* This Effect was ported from:
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* EffecTV - Realtime Digital Video Effector
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* Copyright (C) 2001-2002 FUKUCHI Kentaro
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*
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* dice.c: a 'dicing' effect
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* copyright (c) 2001 Sam Mertens. This code is subject to the provisions of
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* the GNU Public License.
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*
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*/
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#include <config.h>
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#include <stdint.h>
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#include <libvjmem/vjmem.h>
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#include "dices.h"
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static int g_map_width = 0;
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static int g_map_height = 0;
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static int g_cube_size = 0;
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static int g_cube_bits = 0;
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static uint8_t *g_dicemap=NULL;
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void dice_create_map(int w, int h);
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typedef enum _dice_dir {
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Up = 0,
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Right = 1,
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Down = 2,
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Left = 3,
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} DiceDir;
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vj_effect *dices_init(int width, int height)
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{
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vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
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ve->num_params = 1;
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ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params); /* default values */
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ve->limits[0] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* min */
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ve->limits[1] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* max */
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ve->defaults[0] = 4;
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ve->limits[0][0] = 0;
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ve->limits[1][0] = 5;
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ve->description = "Dices (EffectTV)";
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ve->sub_format = 1;
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ve->extra_frame = 0;
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ve->has_user = 0;
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ve->param_description = vje_build_param_list( ve->num_params, "Mode", "Dice size" );
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return ve;
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}
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// FIXME: private
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int dices_malloc(int width, int height)
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{
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g_dicemap = (uint8_t *) vj_malloc(sizeof(uint8_t) * width * height);
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if(!g_dicemap) return 0;
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dice_create_map(width, height);
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return 1;
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}
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void dices_free() {
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if(g_dicemap)
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free(g_dicemap);
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g_dicemap = NULL;
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}
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unsigned int dices_fastrand_val;
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/* effectv's rand val */
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unsigned int dices_fastrand()
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{
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return (dices_fastrand_val = dices_fastrand_val * 1103515245 + 12345);
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}
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void dice_create_map(int w, int h)
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{
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int k,x, y, i = 0;
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int maplen = (w * h);
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g_map_height = h >> g_cube_bits;
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g_map_width = w >> g_cube_bits;
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g_cube_size = 1 << g_cube_bits;
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maplen = maplen / (g_map_height * g_map_width);
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for( k = 0; k < maplen;k++) {
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for (y = 0; y < g_map_height; y++) {
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for (x = 0; x < g_map_width; x++) {
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//g_dicemap[i] = j++;
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//if(j==3) j=0;
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g_dicemap[i] = ((1 + (rand() * (i + y))) & 0x03);
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i++;
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}
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}
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}
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// fprintf(stderr, "created map of %d, %d did %d in dicemap, total is %d\n",
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// w,h,i,(w*h));
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}
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void dices_apply( void* data, VJFrame *frame, int width, int height,
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int cube_bits)
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{
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int i = 0, map_x, map_y, map_i = 0, base, dx, dy, di;
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uint8_t *Y = frame->data[0];
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uint8_t *Cb = frame->data[1];
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uint8_t *Cr = frame->data[2];
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if (cube_bits != g_cube_bits) {
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g_cube_bits = cube_bits;
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dice_create_map(width, height);
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}
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//printf("g_cube_bits = %d, g_cube_size= %d range = %d, %d\n", g_cube_bits, g_cube_size, g_map_width,g_map_height);
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for (map_y = 0; map_y < g_map_height; map_y++) {
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for (map_x = 0; map_x < g_map_width; map_x++) {
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base = (map_y << g_cube_bits) * width + (map_x << g_cube_bits);
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switch (g_dicemap[map_i]) {
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case Left:
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for (dy = 0; dy < g_cube_size; dy++) {
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i = base + dy * width;
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for (dx = 0; dx < g_cube_size; dx++) {
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di = base + (dx * width) + (g_cube_size - dy - 1);
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Y[di] = Y[i];
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Cb[di] = Cb[i];
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Cr[di] = Cr[i];
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i++;
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}
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}
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break;
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case Down:
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for (dy = 0; dy < g_cube_size; dy++) {
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di = base + dy * width;
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i = base + (g_cube_size - dy - 1) * width +
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g_cube_size;
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for (dx = 0; dx < g_cube_size; dx++) {
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i--;
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Y[di] = Y[i];
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Cb[di] = Cb[i];
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Cr[di] = Cr[i];
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di++;
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}
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}
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break;
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case Right:
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for (dy = 0; dy < g_cube_size; dy++) {
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i = base + (dy * width);
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for (dx = 0; dx < g_cube_size; dx++) {
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di = base + dy + (g_cube_size - dx - 1) * width;
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Y[di] = Y[i];
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Cb[di] = Cb[i];
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Cr[di] = Cr[i];
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i++;
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}
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}
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break;
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case Up:
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for( dy = 0; dy < g_cube_size ; dy ++ )
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{
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i = base + dy * width;
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for( dx = 0; dx < g_cube_size ; dx ++ )
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{
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Y[di] = Y[i]; Cb[di] = Cb[i]; Cr[di] = Cr[i]; i ++;
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}
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}
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break;
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}
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map_i++;
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}
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}
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}
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