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/* ScummVM - Scumm Interpreter
* Copyright (C) 2003-2004 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 "stdafx.h"
#include "queen/bankman.h"
#include "queen/resource.h"
namespace Queen {
BankManager::BankManager(Resource *res)
: _res(res) {
memset(_frames, 0, sizeof(_frames));
memset(_banks, 0, sizeof(_banks));
}
BankManager::~BankManager() {
for(uint32 i = 0; i < MAX_BANKS_NUMBER; ++i) {
close(i);
}
eraseAllFrames(true);
}
void BankManager::load(const char *bankname, uint32 bankslot) {
close(bankslot);
_banks[bankslot].data = _res->loadFile(bankname);
if (!_banks[bankslot].data) {
error("Unable to open bank '%s'", bankname);
}
int16 entries = (int16)READ_LE_UINT16(_banks[bankslot].data);
if (entries < 0 || entries >= MAX_BANK_SIZE) {
error("Maximum bank size exceeded or negative bank size : %d", entries);
}
debug(9, "BankManager::load(%s, %d) - entries = %d", bankname, bankslot, entries);
uint32 offset = 2;
uint8 *p = _banks[bankslot].data;
for (int16 i = 1; i <= entries; ++i) {
_banks[bankslot].indexes[i] = offset;
uint16 w = READ_LE_UINT16(p + offset + 0);
uint16 h = READ_LE_UINT16(p + offset + 2);
// jump to next entry, skipping data & header
offset += w * h + 8;
}
}
void BankManager::unpack(uint32 srcframe, uint32 dstframe, uint32 bankslot) {
debug(9, "BankManager::unpack(%d, %d, %d)", srcframe, dstframe, bankslot);
if (!_banks[bankslot].data)
error("BankManager::unpack() _banks[bankslot].data is NULL!");
BobFrame *pbf = &_frames[dstframe];
uint8 *p = _banks[bankslot].data + _banks[bankslot].indexes[srcframe];
pbf->width = READ_LE_UINT16(p + 0);
pbf->height = READ_LE_UINT16(p + 2);
pbf->xhotspot = READ_LE_UINT16(p + 4);
pbf->yhotspot = READ_LE_UINT16(p + 6);
uint32 size = pbf->width * pbf->height;
delete[] pbf->data;
pbf->data = new uint8[ size ];
memcpy(pbf->data, p + 8, size);
}
void BankManager::overpack(uint32 srcframe, uint32 dstframe, uint32 bankslot) {
debug(9, "BankManager::overpack(%d, %d, %d)", srcframe, dstframe, bankslot);
if (!_banks[bankslot].data)
error("BankManager::overpack() _banks[bankslot].data is NULL!");
uint8 *p = _banks[bankslot].data + _banks[bankslot].indexes[srcframe];
uint16 src_w = READ_LE_UINT16(p + 0);
uint16 src_h = READ_LE_UINT16(p + 2);
// unpack if destination frame is smaller than source one
if (_frames[dstframe].width < src_w || _frames[dstframe].height < src_h) {
unpack(srcframe, dstframe, bankslot);
} else {
// copy data 'over' destination frame (without changing frame header)
memcpy(_frames[dstframe].data, p + 8, src_w * src_h);
}
}
void BankManager::close(uint32 bankslot) {
debug(9, "BankManager::close(%d)", bankslot);
delete[] _banks[bankslot].data;
memset(&_banks[bankslot], 0, sizeof(_banks[bankslot]));
}
BobFrame *BankManager::fetchFrame(uint32 index) {
debug(9, "BankManager::fetchFrame(%d)", index);
if (index >= MAX_FRAMES_NUMBER) {
error("BankManager::fetchFrame() invalid frame index = %d", index);
}
return &_frames[index];
}
void BankManager::eraseFrame(uint32 index) {
debug(9, "BankManager::eraseFrame(%d)", index);
BobFrame *pbf = &_frames[index];
delete[] pbf->data;
memset(pbf, 0, sizeof(BobFrame));
}
void BankManager::eraseAllFrames(bool joe) {
uint32 i = 0;
if (!joe) {
i = FRAMES_JOE + FRAMES_JOE_XTRA;
}
while (i < 256) {
eraseFrame(i);
++i;
}
}
} // End of namespace Queen
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