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0d0af39b44
byuu says: This is a few days old, but oh well. This WIP changes nall,hiro,ruby,icarus back to (u)int(8,16,32,64)_t. I'm slowly pushing for (u)int(8,16,32,64) to use my custom Integer<Size>/Natural<Size> classes instead. But it's going to be one hell of a struggle to get that into higan.
48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
#pragma once
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namespace nall { namespace mosaic {
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struct bitstream {
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~bitstream() {
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close();
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}
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auto read(uint64_t addr) const -> bool {
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if(data == nullptr || (addr >> 3) >= size) return 0;
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uint mask = endian == 0 ? (0x01 << (addr & 7)) : (0x80 >> (addr & 7));
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return data[addr >> 3] & mask;
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}
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auto write(uint64_t addr, bool value) -> void {
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if(data == nullptr || readonly == true || (addr >> 3) >= size) return;
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uint mask = endian == 0 ? (0x01 << (addr & 7)) : (0x80 >> (addr & 7));
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if(value == 0) data[addr >> 3] &= ~mask;
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if(value == 1) data[addr >> 3] |= mask;
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}
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auto open(const string& filename) -> bool {
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readonly = false;
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if(fp.open(filename, filemap::mode::readwrite) == false) {
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readonly = true;
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if(fp.open(filename, filemap::mode::read) == false) {
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return false;
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}
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}
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data = fp.data();
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size = fp.size();
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return true;
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}
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auto close() -> void {
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fp.close();
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data = nullptr;
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}
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filemap fp;
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uint8_t* data = nullptr;
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uint size = 0;
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bool readonly = false;
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bool endian = 1;
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};
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}}
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