mirror of
https://github.com/game-stop/veejay.git
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109 lines
3.0 KiB
C
109 lines
3.0 KiB
C
/* veejay - Linux VeeJay
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* (C) 2002-2004 Niels Elburg <nwelburg@gmail.com>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <libvje/effects/common.h>
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#include <veejaycore/vjmem.h>
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#include "transop.h"
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#include "wipe.h"
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typedef struct {
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double g_wipe_width;
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double g_wipe_height;
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} fx_wipe_t;
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vj_effect *wipe_init(int w,int h)
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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 = 2;
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ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params);
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ve->limits[0] = (int *) vj_calloc(sizeof(int) * ve->num_params);
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ve->limits[1] = (int *) vj_calloc(sizeof(int) * ve->num_params);
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ve->defaults[0] = 0;
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ve->defaults[1] = 1;
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ve->limits[0][0] = 0;
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ve->limits[1][0] = (w > h ? w: h);
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ve->limits[0][1] = 0;
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ve->limits[1][1] = 1;
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ve->description = "Transition Wipe";
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ve->sub_format = 1;
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ve->extra_frame = 1;
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ve->has_user = 0;
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ve->param_description = vje_build_param_list(ve->num_params, "Speed", "Restart" );
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ve->is_transition_ready_func = wipe_ready;
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return ve;
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}
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typedef struct {
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int wipePosition;
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int wipeDirection;
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} wipe_t;
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int wipe_ready(void *ptr, int width, int height) {
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wipe_t *w = (wipe_t*) ptr;
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if( w->wipePosition >= width || w->wipePosition <= 0 )
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return TRANSITION_COMPLETED;
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return TRANSITION_RUNNING;
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}
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void *wipe_malloc( int w, int h )
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{
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wipe_t *prv = (wipe_t*) vj_calloc(sizeof(wipe_t));
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prv->wipeDirection = 1;
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return prv;
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}
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void wipe_free(void *ptr)
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{
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free(ptr);
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}
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void wipe_apply( void *ptr, VJFrame *frame, VJFrame *frame2, int *args ) {
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wipe_t *wipe = (wipe_t*) ptr;
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int width = frame->width;
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int height = frame->height;
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int speed = args[0];
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int restart = args[1];
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wipe->wipePosition += speed * wipe->wipeDirection;
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if (wipe->wipePosition >= width) {
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wipe->wipePosition = width - 1;
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wipe->wipeDirection = -1;
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} else if (wipe->wipePosition <= 0) {
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wipe->wipePosition = 0;
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wipe->wipeDirection = 1;
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}
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for (int i = 0; i < height; ++i) {
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for (int j = 0; j < width; ++j) {
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int index = i * width + j;
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if (j >= wipe->wipePosition) {
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frame->data[0][index] = frame2->data[0][index];
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frame->data[1][index] = frame2->data[1][index];
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frame->data[2][index] = frame2->data[2][index];
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}
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}
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}
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}
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