mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-27 04:07:05 +00:00
146 lines
3.3 KiB
C++
146 lines
3.3 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#include "common/endian.h"
|
|
|
|
#include "gob/gob.h"
|
|
#include "gob/video.h"
|
|
|
|
namespace Gob {
|
|
|
|
Video_v1::Video_v1(GobEngine *vm) : Video(vm) {
|
|
}
|
|
|
|
char Video_v1::spriteUncompressor(byte *sprBuf, int16 srcWidth, int16 srcHeight,
|
|
int16 x, int16 y, int16 transp, Surface &destDesc) {
|
|
byte *memBuffer;
|
|
byte *srcPtr;
|
|
byte temp;
|
|
uint16 sourceLeft;
|
|
uint16 cmdVar;
|
|
int16 curWidth, curHeight;
|
|
int16 offset;
|
|
int16 counter2;
|
|
int16 bufPos;
|
|
int16 strLen;
|
|
|
|
//_vm->validateVideoMode(destDesc._vidMode);
|
|
|
|
if (sprBuf[0] != 1)
|
|
return 0;
|
|
|
|
if (sprBuf[1] != 2)
|
|
return 0;
|
|
|
|
if (sprBuf[2] == 2) {
|
|
Surface sourceDesc(srcWidth, srcHeight, 1, sprBuf + 3);
|
|
destDesc.blit(sourceDesc, 0, 0, srcWidth - 1, srcHeight - 1, x, y, (transp == 0) ? -1 : 0);
|
|
return 1;
|
|
} else {
|
|
memBuffer = new byte[4114];
|
|
assert(memBuffer);
|
|
|
|
srcPtr = sprBuf + 3;
|
|
sourceLeft = READ_LE_UINT16(srcPtr);
|
|
|
|
Pixel destPtr = destDesc.get(x, y);
|
|
|
|
curWidth = 0;
|
|
curHeight = 0;
|
|
|
|
Pixel 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.set(temp);
|
|
destPtr++;
|
|
curWidth++;
|
|
if (curWidth >= srcWidth) {
|
|
curWidth = 0;
|
|
linePtr += destDesc.getWidth();
|
|
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.set(temp);
|
|
destPtr++;
|
|
|
|
curWidth++;
|
|
if (curWidth >= srcWidth) {
|
|
curWidth = 0;
|
|
linePtr += destDesc.getWidth();
|
|
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
|