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/*
* Copyright 2003-2015 (C) Raster Software Vigo (Sergio Costas)
* This file is part of FBZX
*
* FBZX 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.
*
* FBZX 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/>.
*
*/
/*
* tape.hpp
*
* Created on: 15/03/2015
* Author: raster
*/
extern class Tape *OOTape; // Tape object
using namespace std;
#include <string>
#include <inttypes.h>
#include <stdio.h>
#include "computer.hh"
#include "emulator.hh"
#include "signals.hh"
#ifndef SRC_TAPE_HPP_
#define SRC_TAPE_HPP_
enum FastLoadReturn {FASTLOAD_OK, FASTLOAD_NO_BLOCK, FASTLOAD_NO_TAPE, FASTLOAD_NO_FLAG, FASTLOAD_NODATA, FASTLOAD_END_TAPE};
class Tape : public Signals {
class TapeBlock *blocks;
class TapeBlock *current_block;
bool paused;
bool block_accesed;
bool tzx;
void add_block(class TapeBlock *);
void delete_blocks();
bool load_tap(string);
bool load_tzx(string);
string current_file;
public:
Tape();
~Tape();
/**
* Emulates the tape for an specified amount of time
* @param tstates The number of tstates to emulate
*/
void play(uint32_t tstates);
/**
* Loads a TAP or TZX file. It also pauses the tape.
* @param filename The full path to the file
* @return TRUE if there was an error; FALSE if the file was loaded fine
*/
bool load_file(string);
/**
* Pauses or releases the tape emulation
* @param pause TRUE to pause the tape, FALSE to release it
*/
void set_pause(bool pause);
/**
* Returns whether the tape is paused or not
* @return TRUE if paused; FALSE if not paused
*/
bool get_pause();
/**
* Reads the current signal being "emited" by the tape.
* @return the current signal value, which can be 0 or 1.
*/
uint8_t read_signal();
/**
* Rewinds the tape, putting it at the start, ready to begin again.
*/
void rewind();
/**
* Tries to fast-read the next block in the tape
* @param data Where to return the block's data
* @param length The length of the data
* @param the desired flag
* @return FASTLOAD_OK if everything went fine; FASTLOAD_NO_BLOCK if the next block can't be fast-loaded; FASTLOAD_NO_FLAG if the flag is not valid; FASTLOAD_END_TAPE if the tape reached end and must be rewind
*/
enum FastLoadReturn fast_read(uint8_t *data,uint16_t &length,uint8_t flag);
void send_pause_signal();
void send_pause_signal48k();
/**
* Saves in disk the current tape
* @param filename The path to the file to create/overwrite
*/
void save_file(string filename);
/**
* Adds a new standard block to the end of the current tape
* @param data Pointer to the data to store
* @param size The size of the block
* @return FALSE if all went fine; TRUE if there was an error
*/
bool add_block(uint8_t *data,uint16_t size);
};
#endif /* SRC_TAPE_HPP_ */
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