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https://github.com/dingusdev/dingusppc.git
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d4c9db7fcf
Allows different implementations for different platforms (the JS build relies on browser APIs to stream disk images over the network). Setting aside the JS build, this also reduces some code duplication.
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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