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/* ScummVM - Scumm Interpreter
* Copyright (C) 2004 Ivan Dubrov
* Copyright (C) 2004-2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "common/stdafx.h"
#include "common/endian.h"
#include "gob/gob.h"
#include "gob/global.h"
#include "gob/video.h"
namespace Gob {
Video_v1::Video_v1(GobEngine *vm) : Video(vm) {
}
//XXX: Use this function to update the screen for now.
// This should be moved to a better location later on.
void Video_v1::waitRetrace(int16) {
if (_vm->_global->_pPrimarySurfDesc) {
g_system->copyRectToScreen(_vm->_global->_pPrimarySurfDesc->vidPtr, 320, 0, 0, 320, 200);
g_system->updateScreen();
}
}
void Video_v1::drawLetter(int16 item, int16 x, int16 y, FontDesc *fontDesc, int16 color1,
int16 color2, int16 transp, SurfaceDesc *dest) {
_videoDriver->drawLetter((unsigned char) item, x, y, fontDesc, color1, color2, transp, dest);
}
Video::SurfaceDesc *Video_v1::initSurfDesc(int16 vidMode, int16 width, int16 height, int16 flags) {
int8 flagsAnd2;
byte *vidMem = 0;
int32 sprSize;
int16 someFlags = 1;
SurfaceDesc *descPtr;
if (flags != PRIMARY_SURFACE)
_vm->_global->_sprAllocated++;
if (flags & RETURN_PRIMARY)
return _vm->_global->_pPrimarySurfDesc;
if (vidMode != 0x13)
error("Video::initSurfDesc: Only VGA 0x13 mode is supported!");
if ((flags & PRIMARY_SURFACE) == 0)
vidMode += 0x80;
if (flags & 2)
flagsAnd2 = 1;
else
flagsAnd2 = 0;
if (flags & PRIMARY_SURFACE) {
_vm->_global->_primaryWidth = width;
_vm->_global->_mouseMaxCol = width;
_vm->_global->_primaryHeight = height;
_vm->_global->_mouseMaxRow = height;
sprSize = 0;
} else {
sprSize = Video::getRectSize(width, height, flagsAnd2, vidMode);
if (flagsAnd2)
someFlags += 0x80;
}
if (flags & PRIMARY_SURFACE) {
descPtr = _vm->_global->_pPrimarySurfDesc;
delete[] descPtr->vidPtr;
assert(descPtr);
vidMem = new byte[320 * 200];
} else {
if (flags & DISABLE_SPR_ALLOC) {
descPtr = new SurfaceDesc;
// this case causes vidPtr to be set to invalid memory
assert(false);
} else {
descPtr = new SurfaceDesc;
descPtr->vidPtr = new byte[sprSize];
vidMem = descPtr->vidPtr;
}
}
if (descPtr == 0)
return 0;
descPtr->width = width;
descPtr->height = height;
descPtr->flag = someFlags;
descPtr->vidMode = vidMode;
descPtr->vidPtr = vidMem;
descPtr->reserved1 = 0;
descPtr->reserved2 = 0;
return descPtr;
}
char Video_v1::spriteUncompressor(byte *sprBuf, int16 srcWidth, int16 srcHeight,
int16 x, int16 y, int16 transp, SurfaceDesc *destDesc) {
SurfaceDesc sourceDesc;
byte *memBuffer;
byte *srcPtr;
byte *destPtr;
byte *linePtr;
byte temp;
uint16 sourceLeft;
int16 curWidth;
int16 curHeight;
int16 offset;
int16 counter2;
uint16 cmdVar;
int16 bufPos;
int16 strLen;
if (!destDesc)
return 1;
if ((destDesc->vidMode & 0x7f) != 0x13)
error("Video::spriteUncompressor: Video mode 0x%x is not supported!",
destDesc->vidMode & 0x7f);
if (sprBuf[0] != 1)
return 0;
if (sprBuf[1] != 2)
return 0;
if (sprBuf[2] == 2) {
sourceDesc.width = srcWidth;
sourceDesc.height = srcHeight;
sourceDesc.vidMode = 0x93;
sourceDesc.vidPtr = sprBuf + 3;
Video::drawSprite(&sourceDesc, destDesc, 0, 0, srcWidth - 1,
srcHeight - 1, x, y, transp);
return 1;
} else {
memBuffer = new byte[4114];
if (memBuffer == 0)
return 0;
srcPtr = sprBuf + 3;
sourceLeft = READ_LE_UINT16(srcPtr);
destPtr = destDesc->vidPtr + destDesc->width * y + x;
curWidth = 0;
curHeight = 0;
linePtr = destPtr;
srcPtr += 4;
for (offset = 0; offset < 4078; offset++)
memBuffer[offset] = 0x20;
cmdVar = 0;
bufPos = 4078;
while (1) {
cmdVar >>= 1;
if ((cmdVar & 0x100) == 0) {
cmdVar = *srcPtr | 0xff00;
srcPtr++;
}
if ((cmdVar & 1) != 0) {
temp = *srcPtr++;
if (temp != 0 || transp == 0)
*destPtr = temp;
destPtr++;
curWidth++;
if (curWidth >= srcWidth) {
curWidth = 0;
linePtr += destDesc->width;
destPtr = linePtr;
curHeight++;
if (curHeight >= srcHeight)
break;
}
sourceLeft--;
if (sourceLeft == 0)
break;
memBuffer[bufPos] = temp;
bufPos++;
bufPos %= 4096;
} else {
offset = *srcPtr;
srcPtr++;
offset |= (*srcPtr & 0xf0) << 4;
strLen = (*srcPtr & 0x0f) + 3;
srcPtr++;
for (counter2 = 0; counter2 < strLen;
counter2++) {
temp =
memBuffer[(offset +
counter2) % 4096];
if (temp != 0 || transp == 0)
*destPtr = temp;
destPtr++;
curWidth++;
if (curWidth >= srcWidth) {
curWidth = 0;
linePtr += destDesc->width;
destPtr = linePtr;
curHeight++;
if (curHeight >= srcHeight) {
delete[] memBuffer;
return 1;
}
}
sourceLeft--;
if (sourceLeft == 0) {
delete[] memBuffer;
return 1;
}
memBuffer[bufPos] = temp;
bufPos++;
bufPos %= 4096;
}
}
}
}
delete[] memBuffer;
return 1;
}
} // End of namespace Gob
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