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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /gfx/ots/src/maxp.cc | |
parent | Initial commit. (diff) | |
download | firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/ots/src/maxp.cc')
-rw-r--r-- | gfx/ots/src/maxp.cc | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/gfx/ots/src/maxp.cc b/gfx/ots/src/maxp.cc new file mode 100644 index 0000000000..232e4a9889 --- /dev/null +++ b/gfx/ots/src/maxp.cc @@ -0,0 +1,103 @@ +// Copyright (c) 2009-2017 The OTS Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "maxp.h" + +// maxp - Maximum Profile +// http://www.microsoft.com/typography/otspec/maxp.htm + +namespace ots { + +bool OpenTypeMAXP::Parse(const uint8_t *data, size_t length) { + Buffer table(data, length); + + uint32_t version = 0; + if (!table.ReadU32(&version)) { + return Error("Failed to read table version"); + } + + if (version >> 16 > 1) { + return Error("Unsupported table version 0x%x", version); + } + + if (!table.ReadU16(&this->num_glyphs)) { + return Error("Failed to read numGlyphs"); + } + + if (!this->num_glyphs) { + return Error("numGlyphs is 0"); + } + + if (version >> 16 == 1) { + this->version_1 = true; + if (!table.ReadU16(&this->max_points) || + !table.ReadU16(&this->max_contours) || + !table.ReadU16(&this->max_c_points) || + !table.ReadU16(&this->max_c_contours) || + !table.ReadU16(&this->max_zones) || + !table.ReadU16(&this->max_t_points) || + !table.ReadU16(&this->max_storage) || + !table.ReadU16(&this->max_fdefs) || + !table.ReadU16(&this->max_idefs) || + !table.ReadU16(&this->max_stack) || + !table.ReadU16(&this->max_size_glyf_instructions) || + !table.ReadU16(&this->max_c_components) || + !table.ReadU16(&this->max_c_depth)) { + return Error("Failed to read version 1 table data"); + } + + if (this->max_zones == 0) { + // workaround for ipa*.ttf Japanese fonts. + Warning("Bad maxZones: %u", this->max_zones); + this->max_zones = 1; + } else if (this->max_zones == 3) { + // workaround for Ecolier-*.ttf fonts. + Warning("Bad maxZones: %u", this->max_zones); + this->max_zones = 2; + } + + if ((this->max_zones != 1) && (this->max_zones != 2)) { + return Error("Bad maxZones: %u", this->max_zones); + } + } else { + this->version_1 = false; + } + + return true; +} + +bool OpenTypeMAXP::Serialize(OTSStream *out) { + if (!out->WriteU32(this->version_1 ? 0x00010000 : 0x00005000) || + !out->WriteU16(this->num_glyphs)) { + return Error("Failed to write version or numGlyphs"); + } + + if (!this->version_1) return true; + + if (!out->WriteU16(this->max_points) || + !out->WriteU16(this->max_contours) || + !out->WriteU16(this->max_c_points) || + !out->WriteU16(this->max_c_contours)) { + return Error("Failed to write maxp"); + } + + if (!out->WriteU16(this->max_zones) || + !out->WriteU16(this->max_t_points) || + !out->WriteU16(this->max_storage) || + !out->WriteU16(this->max_fdefs) || + !out->WriteU16(this->max_idefs) || + !out->WriteU16(this->max_stack) || + !out->WriteU16(this->max_size_glyf_instructions)) { + return Error("Failed to write more maxp"); + } + + if (!out->WriteU16(this->max_c_components) || + !out->WriteU16(this->max_c_depth)) { + return Error("Failed to write yet more maxp"); + } + + return true; +} + +} // namespace ots |