mirror of
https://github.com/game-stop/veejay.git
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97 lines
2.8 KiB
C
97 lines
2.8 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 <libvjmem/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] = 0;
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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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//FIXME: private data
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static double g_wipe_width = 0;
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static double g_wipe_height = 0;
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int wipe_ready(int width, int height) { //FIXME pass in fx instance data
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if (g_wipe_width == width && g_wipe_height == height)
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return TRANSITION_COMPLETED;
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return TRANSITION_RUNNING;
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}
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void *wipe_instantiate(VJFrame *frame)
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{
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fx_wipe_t *prv = (fx_wipe_t*) vj_calloc(sizeof(fx_wipe_t));
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return prv;
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}
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void wipe_destroy(void *ptr)
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{
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free(ptr);
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}
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void wipe_apply( VJFrame *frame, VJFrame *frame2, int inc, int restart) //FIXME pass in fx instance data, take parameters from array
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{
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const unsigned int width = frame->width;
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const unsigned int height = frame->height;
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double ratio = (double) width / (double) height;
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transop_apply(frame, frame2, (int) g_wipe_width, (int) g_wipe_height, 0, 0, 0, 0);
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g_wipe_width += ratio * ((double ) inc);
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g_wipe_height += ((double) inc);
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if(g_wipe_width > width && g_wipe_height > height) {
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g_wipe_width = width;
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g_wipe_height = height;
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}
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if(restart) {
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g_wipe_width = 0;
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g_wipe_height = 0;
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}
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}
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