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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2004 The ScummVM project
*
* This program 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.
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "common/stdafx.h"
#include "graphics/animation.h"
#include "common/file.h"
#include "sound/audiostream.h"
namespace Graphics {
BaseAnimationState::BaseAnimationState(SoundMixer *snd, OSystem *sys, int width, int height)
: _snd(snd), _sys(sys), MOVIE_WIDTH(width), MOVIE_HEIGHT(height) {
}
BaseAnimationState::~BaseAnimationState() {
#ifdef USE_MPEG2
_snd->stopHandle(bgSound);
if (decoder)
mpeg2_close(decoder);
delete mpgfile;
delete sndfile;
#ifndef BACKEND_8BIT
_sys->hide_overlay();
free(overlay);
#endif
if (bgSoundStream)
delete bgSoundStream;
#endif
}
bool BaseAnimationState::checkPaletteSwitch() {
#ifdef BACKEND_8BIT
// if we have reached the last image with this palette, switch to new one
if (framenum == palettes[palnum].end) {
unsigned char *l = lut2;
palnum++;
setPalette(palettes[palnum].pal);
lutcalcnum = (BITDEPTH + palettes[palnum].end - (framenum + 1) + 2) / (palettes[palnum].end - (framenum + 1) + 2);
lut2 = lut;
lut = l;
return true;
}
#endif
return false;
}
#ifdef BACKEND_8BIT
/**
* Build 'Best-Match' RGB lookup table
*/
void BaseAnimationState::buildLookup(int p, int lines) {
int y, cb;
int r, g, b, ii;
if (p >= maxPalnum)
return;
if (p != curpal) {
curpal = p;
cr = 0;
pos = 0;
}
if (cr > BITDEPTH)
return;
for (ii = 0; ii < lines; ii++) {
r = (-16 * 256 + (int) (256 * 1.596) * ((cr << SHIFT) - 128)) / 256;
for (cb = 0; cb <= BITDEPTH; cb++) {
g = (-16 * 256 - (int) (0.813 * 256) * ((cr << SHIFT) - 128) - (int) (0.391 * 256) * ((cb << SHIFT) - 128)) / 256;
b = (-16 * 256 + (int) (2.018 * 256) * ((cb << SHIFT) - 128)) / 256;
for (y = 0; y <= BITDEPTH; y++) {
int idx, bst = 0;
int dis = 2 * SQR(r - palettes[p].pal[0]) + 4 * SQR(g - palettes[p].pal[1]) + SQR(b - palettes[p].pal[2]);
for (idx = 1; idx < 256; idx++) {
long d2 = 2 * SQR(r - palettes[p].pal[4 * idx]) + 4 * SQR(g - palettes[p].pal[4 * idx + 1]) + SQR(b - palettes[p].pal[4 * idx + 2]);
if (d2 < dis) {
bst = idx;
dis = d2;
}
}
lut2[pos++] = bst;
r += (1 << SHIFT);
g += (1 << SHIFT);
b += (1 << SHIFT);
}
r -= (BITDEPTH+1)*(1 << SHIFT);
}
cr++;
if (cr > BITDEPTH)
return;
}
}
#else
OverlayColor *BaseAnimationState::lookup = 0;
void BaseAnimationState::buildLookup() {
if (lookup)
return;
lookup = (OverlayColor *)calloc((BITDEPTH+1) * (BITDEPTH+1) * 256, sizeof(OverlayColor));
int y, cb, cr;
int r, g, b;
int pos = 0;
for (cr = 0; cr <= BITDEPTH; cr++) {
for (cb = 0; cb <= BITDEPTH; cb++) {
for (y = 0; y < 256; y++) {
r = ((y - 16) * 256 + (int) (256 * 1.596) * ((cr << SHIFT) - 128)) / 256;
g = ((y - 16) * 256 - (int) (0.813 * 256) * ((cr << SHIFT) - 128) - (int) (0.391 * 256) * ((cb << SHIFT) - 128)) / 256;
b = ((y - 16) * 256 + (int) (2.018 * 256) * ((cb << SHIFT) - 128)) / 256;
if (r < 0) r = 0;
else if (r > 255) r = 255;
if (g < 0) g = 0;
else if (g > 255) g = 255;
if (b < 0) b = 0;
else if (b > 255) b = 255;
lookup[pos++] = _sys->RGBToColor(r, g, b);
}
}
}
}
void BaseAnimationState::plotYUV(OverlayColor *lut, int width, int height, byte *const *dat) {
OverlayColor *ptr = overlay + (MOVIE_HEIGHT - height) / 2 * MOVIE_WIDTH + (MOVIE_WIDTH - width) / 2;
int x, y;
int ypos = 0;
int cpos = 0;
int linepos = 0;
for (y = 0; y < height; y += 2) {
for (x = 0; x < width; x += 2) {
int i = ((((dat[2][cpos] + ROUNDADD) >> SHIFT) * (BITDEPTH+1)) + ((dat[1][cpos] + ROUNDADD)>>SHIFT)) * 256;
cpos++;
ptr[linepos ] = lut[i + dat[0][ ypos ]];
ptr[MOVIE_WIDTH + linepos++] = lut[i + dat[0][width + ypos++]];
ptr[linepos ] = lut[i + dat[0][ ypos ]];
ptr[MOVIE_WIDTH + linepos++] = lut[i + dat[0][width + ypos++]];
}
linepos += (2 * MOVIE_WIDTH - width);
ypos += width;
}
}
#endif
} // End of namespace Graphics
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