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/* 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.
*
* $URL$
* $Id$
*
* CD/drive handling functions
*/
#include "common/config-manager.h"
#include "common/substream.h"
#include "gui/message.h"
#include "tinsel/drives.h"
#include "tinsel/scene.h"
#include "tinsel/tinsel.h"
#include "tinsel/sched.h"
#include "tinsel/strres.h"
namespace Tinsel {
// FIXME: Avoid non-const global vars
char currentCD = '1';
static bool bChangingCD = false;
static char nextCD = '\0';
static uint32 lastTime = 0;
extern LANGUAGE sampleLanguage;
void CdCD(CORO_PARAM) {
CORO_BEGIN_CONTEXT;
CORO_END_CONTEXT(_ctx);
CORO_BEGIN_CODE(_ctx);
while (bChangingCD) {
if (g_scheduler->getCurrentProcess()) {
// FIXME: CdCD gets passed a nullContext in RegisterGlobals() and
// PrimeSceneHopper(), because I didn't know how to get a proper
// context without converting the whole calling stack to CORO'd
// functions. If these functions really get called while a CD
// change is requested, this needs to be resolved.
if (coroParam == nullContext)
error("CdCD needs context");
CORO_SLEEP(1);
} else
error("No current process in CdCD()");
}
CORO_END_CODE;
}
int GetCurrentCD() {
// count from 1
return (currentCD - '1' + 1);
}
static const uint32 cdFlags[] = { fCd1, fCd2, fCd3, fCd4, fCd5, fCd6, fCd7, fCd8 };
void SetCD(int flags) {
if (flags & cdFlags[currentCD - '1'])
return;
error("SetCD() problem");
}
int GetCD(int flags) {
int i;
char cd = '\0';
if (flags & cdFlags[currentCD - '1'])
return GetCurrentCD();
for (i = 0; i < 8; i++) {
if (flags & cdFlags[i]) {
cd = (char)(i + '1');
break;
}
}
assert(i != 8);
nextCD = cd;
return cd;
}
void DoCdChange() {
if (bChangingCD && (g_system->getMillis() > (lastTime + 1000))) {
lastTime = g_system->getMillis();
_vm->_sound->closeSampleStream();
// Use the filesize of the sample file to determine, for Discworld 2, which CD it is
if (TinselV2) {
TinselFile f;
if (!f.open(_vm->getSampleFile(sampleLanguage)))
// No CD present
return;
char sampleCdNumber = (f.size() >= (200 * 1024 * 1024)) ? '1' : '2';
f.close();
if (currentCD != sampleCdNumber)
return;
}
_vm->_sound->openSampleFiles();
ChangeLanguage(TextLanguage());
bChangingCD = false;
}
}
void SetNextCD(int cdNumber) {
assert(cdNumber == 1 || cdNumber == 2);
nextCD = (char)(cdNumber + '1' - 1);
}
bool GotoCD() {
// WORKAROUND: Somehow, CdDoChange() is called twice... Hopefully, this guard helps
if (currentCD == nextCD)
return false;
currentCD = nextCD;
/* if (bNoCD) {
strcpy(cdDirectory, hdDirectory);
cdLastBit[3] = currentCD;
strcat(cdDirectory, cdLastBit);
}
*/
bChangingCD = true;
return true;
}
bool TinselFile::_warningShown = false;
TinselFile::TinselFile() : ReadStreamEndian((_vm->getFeatures() & GF_BIG_ENDIAN) != 0) {
_stream = NULL;
}
TinselFile::~TinselFile() {
delete _stream;
}
bool TinselFile::openInternal(const Common::String &filename) {
_stream = SearchMan.createReadStreamForMember(filename);
if (!_stream)
_stream = SearchMan.createReadStreamForMember(filename + ".");
return _stream != 0;
}
bool TinselFile::open(const Common::String &filename) {
if (openInternal(filename))
return true;
if (!TinselV2)
return false;
// Check if the file being requested is the *1.* or *2.* files
const char *fname = filename.c_str();
const char *p = strchr(fname, '1');
if (!p)
p = strchr(fname, '2');
if (!p || (*(p + 1) != '.'))
return false;
// Form a filename without the CD number character
char newFilename[50];
strncpy(newFilename, fname, p - fname);
strcpy(newFilename + (p - fname), p + 1);
return openInternal(newFilename);
}
void TinselFile::close() {
delete _stream;
_stream = NULL;
}
int32 TinselFile::pos() const {
assert(_stream);
return _stream->pos();
}
int32 TinselFile::size() const {
assert(_stream);
return _stream->size();
}
bool TinselFile::seek(int32 offset, int whence) {
assert(_stream);
return _stream->seek(offset, whence);
}
bool TinselFile::eos() const {
assert(_stream);
return _stream->eos();
}
bool TinselFile::err() const {
assert(_stream);
return _stream->err();
}
void TinselFile::clearErr() {
assert(_stream);
_stream->clearErr();
}
uint32 TinselFile::read(void *dataPtr, uint32 dataSize) {
assert(_stream);
return _stream->read(dataPtr, dataSize);
}
} // End of namespace Tinsel
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