63 lines
2.1 KiB
C++
63 lines
2.1 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-23 divingkatae and maximum
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(theweirdo) spatium
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(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/** @file Block storage device definitions. */
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#ifndef BLOCK_STORAGE_DEVICE_H
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#define BLOCK_STORAGE_DEVICE_H
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#include <utils/imgfile.h>
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#include <cinttypes>
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#include <memory>
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#include <string>
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class BlockStorageDevice {
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public:
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BlockStorageDevice(const uint32_t cache_blocks, const uint32_t block_size=512);
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~BlockStorageDevice();
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void set_block_size(const int blk_size) { this->block_size = blk_size; };
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int set_host_file(std::string file_path);
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int set_fpos(const uint32_t lba);
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int read_begin(int nblocks, uint32_t max_len);
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int data_left() { return this->remain_size; };
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int read_more();
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int write_begin(char *buf, int nblocks);
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protected:
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ImgFile img_file;
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uint64_t size_bytes = 0; // image file size in bytes
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uint64_t size_blocks = 0; // image file size in blocks
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uint64_t cur_fpos = 0; // current image file pointer position
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uint32_t block_size = 512; // physical block size
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uint32_t cache_size = 0; // cache size
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uint32_t remain_size = 0;
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bool is_writeable = false;
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bool is_ready = false; // ready for operation
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std::unique_ptr<char[]> data_cache;
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};
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#endif // BLOCK_STORAGE_DEVICE_H
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