47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
#include "framebuffer/psf.h"
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#include <glacier/memory/move.h>
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#include <mammoth/util/debug.h>
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namespace {
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const uint32_t kMagic = 0x864AB572;
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}
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Psf::Psf(glcr::StringView path)
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: psf_file_(mmth::File::Open(path)),
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header_(reinterpret_cast<PsfHeader*>(psf_file_.raw_ptr())) {
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EnsureValid();
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}
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void Psf::DumpHeader() {
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dbgln("Magic: {x}", header_->magic);
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dbgln("Version: {x}", header_->version);
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dbgln("Header Sz: {x}", header_->headersize);
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dbgln("Flags: {x}", header_->flags);
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dbgln("Length: {x}", header_->numglyph);
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dbgln("Glyph Size: {x}", header_->bytesperglyph);
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dbgln("Height: {x}", header_->height);
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dbgln("Width: {x}", header_->width);
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}
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void Psf::EnsureValid() {
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if (header_->magic != kMagic) {
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dbgln("PSF: Magic value: {x}", header_->magic);
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crash("PSF: Invalid magic value", glcr::INVALID_ARGUMENT);
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}
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if (header_->version != 0) {
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crash("PSF non-zero version", glcr::INVALID_ARGUMENT);
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}
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if (header_->height != 0x10) {
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crash("PSF height other than 16 not handled", glcr::UNIMPLEMENTED);
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}
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if (header_->width != 0x8) {
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crash("PSF width other than 8 not handled", glcr::UNIMPLEMENTED);
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}
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}
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