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/*
* Copyright 1994-2012 Olivier Girondel
*
* This file is part of lebiniou.
*
* lebiniou is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* lebiniou 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with lebiniou. If not, see <http://www.gnu.org/licenses/>.
*/
#include "constants.h"
#include "brandom.h"
#include "pictfader.h"
#include "pictures.h"
#include "globals.h"
PictFader_t *
PictFader_new(const u_short size)
{
PictFader_t *pf = xcalloc(1, sizeof(PictFader_t));
pf->on = 0;
pf->cur = Picture8_new();
if (pictures != NULL)
pf->dst = pictures->pics[0];
pf->fader = Fader_new(BUFFSIZE);
pf->shf = Shuffler_new(size);
Shuffler_set_mode(pf->shf, BS_RANDOM);
#ifdef XDEBUG
Shuffler_verbose(pf->shf);
#endif
PictFader_set(pf);
return pf;
}
void
PictFader_delete(PictFader_t *pf)
{
Picture8_delete(pf->cur);
Fader_delete(pf->fader);
Shuffler_delete(pf->shf);
xfree(pf);
}
void
PictFader_init(PictFader_t *pf)
{
Fader_t *fader = pf->fader;
u_long i;
const Buffer8_t *src = pf->cur->buff;
const Buffer8_t *dst = pf->dst->buff;
Fader_init(fader);
for (i = BUFFSIZE; i--; ) { /* i < BUFFSIZE; i++) { */
/* delta values for fading */
fader->delta[i] = (long)(
((float)dst->buffer[i] - (float)src->buffer[i])
/ (float)(fader->max)
* MFACTOR);
/* initial values for fading */
/*fader->tmp[i] = (float)src->buffer[i];*/
fader->tmp[i] = (u_long)src->buffer[i]*MFACTOR;
}
Fader_start(fader);
}
void
PictFader_run(PictFader_t *pf)
{
Fader_t *fader = pf->fader;
const u_long elapsed = Fader_elapsed(fader);
Fader_start(fader);
fader->faded += elapsed;
if (fader->faded < fader->max) {
/* now do some fading stuff #~{@ */
/* we spent (elapsed) msecs */
Pixel_t *ptr = pf->cur->buff->buffer;
/* float *tmp = fader->tmp; */
/* float *delta = fader->delta; */
u_long *tmp = fader->tmp;
long *delta = fader->delta;
u_long i;
for (i = BUFFSIZE; i--; ptr++, tmp++, delta++)
/**ptr = (Pixel_t)(*tmp += (elapsed * *delta));*/
*ptr = (Pixel_t)((*tmp += (elapsed * *delta))/MFACTOR);
} else {
/* we're done */
fader->fading = 0;
/* copy, just in case */
Picture8_copy(pf->dst, pf->cur);
}
}
void
PictFader_set(PictFader_t *pf)
{
Fader_t *fader = pf->fader;
pf->dst = pictures->pics[fader->target];
if (pf->dst->name != NULL) {
if (libbiniou_verbose)
printf("[i] Using picture '%s'\n", pf->dst->name);
} else
xerror("Picture without name, WTF #@!\n");
if (pf->cur != NULL && pf->dst->id != pf->cur->id) {
if (fader->fade)
PictFader_init(pf);
else
pf->cur = pf->dst;
fader->fading = fader->fade;
}
}
void
PictFader_prev(PictFader_t *pf)
{
DEC(pf->fader->target, pf->shf->size);
PictFader_set(pf);
}
void
PictFader_next(PictFader_t *pf)
{
INC(pf->fader->target, pf->shf->size);
PictFader_set(pf);
}
void
PictFader_random(PictFader_t *pf)
{
pf->fader->target = Shuffler_get(pf->shf);
PictFader_set(pf);
}
int
PictFader_ring(const PictFader_t *pf)
{
const Fader_t *fader = pf->fader;
return (fader->fading && (b_timer_elapsed(fader->timer)*MFACTOR));
}
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