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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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef PSPSTREAM_H_
#define PSPSTREAM_H_
#include <pspkerneltypes.h>
#include "backends/platform/psp/powerman.h"
//#include "common/list.h"
#include "common/noncopyable.h"
#include "common/stream.h"
#include "common/str.h"
/**
* Class to handle special suspend/resume needs of PSP IO Streams
*/
class PspIoStream final : public Common::SeekableReadStream, public Common::SeekableWriteStream, public Common::NonCopyable, public Suspendable {
protected:
SceUID _handle; // file handle
Common::String _path;
int _fileSize;
bool _writeMode; // for resuming in the right mode
int _physicalPos; // physical position in file
int _pos; // position. Sometimes virtual
bool _eos; // EOS flag
enum {
SuspendError = 2,
ResumeError = 3
};
// debug stuff
mutable int _error; // file error state
int _errorSuspend; // for debugging
mutable int _errorSource;
int _errorPos;
SceUID _errorHandle;
int _suspendCount;
bool physicalSeekFromCur(int32 offset);
public:
/**
* Given a path, invoke fopen on that path and wrap the result in a
* PspIoStream instance.
*/
static PspIoStream *makeFromPath(const Common::String &path, bool writeMode);
PspIoStream(const Common::String &path, bool writeMode);
~PspIoStream() override;
SceUID open(); // open the file pointed to by the file path
bool err() const override;
void clearErr() override;
bool eos() const override;
uint32 write(const void *dataPtr, uint32 dataSize) override;
bool flush() override;
int64 pos() const override;
int64 size() const override;
bool seek(int64 offs, int whence = SEEK_SET) override;
uint32 read(void *dataPtr, uint32 dataSize) override;
// for suspending
int suspend() override; /* Suspendable interface (power manager) */
int resume() override; /* " " */
};
#endif /* PSPSTREAM_H_ */
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