Logo Search packages:      
Sourcecode: scummvm version File versions  Download package

psp-stream.h

/* 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.
 *
 * $URL$
 * $Id$
 *
 */

#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
 */
00039 class PspIoStream : public Common::SeekableReadStream, public Common::WriteStream, 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);
      virtual ~PspIoStream();

      void * open();          // open the file pointed to by the file path

      bool err() const;
      void clearErr();
      bool eos() const;

      virtual uint32 write(const void *dataPtr, uint32 dataSize);
      virtual bool flush();

      virtual int32 pos() const;
      virtual int32 size() const;
      virtual bool seek(int32 offs, int whence = SEEK_SET);
      virtual uint32 read(void *dataPtr, uint32 dataSize);

      // for suspending
      int suspend();          /* Suspendable interface (power manager) */
      int resume();           /* " " */
};

#endif /* PSPSTREAM_H_ */

Generated by  Doxygen 1.6.0   Back to index