mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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129 lines
3.4 KiB
C++
129 lines
3.4 KiB
C++
// Copyright (c) 2009 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "maxp.h"
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// maxp - Maximum Profile
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// http://www.microsoft.com/opentype/otspec/maxp.htm
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namespace ots {
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bool ots_maxp_parse(OpenTypeFile *file, const uint8_t *data, size_t length) {
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Buffer table(data, length);
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OpenTypeMAXP *maxp = new OpenTypeMAXP;
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file->maxp = maxp;
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uint32_t version = 0;
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if (!table.ReadU32(&version)) {
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return OTS_FAILURE();
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}
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if (version >> 16 > 1) {
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return OTS_FAILURE();
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}
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if (!table.ReadU16(&maxp->num_glyphs)) {
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return OTS_FAILURE();
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}
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if (!maxp->num_glyphs) {
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return OTS_FAILURE();
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}
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if (version >> 16 == 1) {
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maxp->version_1 = true;
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if (!table.ReadU16(&maxp->max_points) ||
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!table.ReadU16(&maxp->max_contours) ||
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!table.ReadU16(&maxp->max_c_points) ||
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!table.ReadU16(&maxp->max_c_contours) ||
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!table.ReadU16(&maxp->max_zones) ||
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!table.ReadU16(&maxp->max_t_points) ||
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!table.ReadU16(&maxp->max_storage) ||
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!table.ReadU16(&maxp->max_fdefs) ||
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!table.ReadU16(&maxp->max_idefs) ||
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!table.ReadU16(&maxp->max_stack) ||
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!table.ReadU16(&maxp->max_size_glyf_instructions) ||
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!table.ReadU16(&maxp->max_c_components) ||
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!table.ReadU16(&maxp->max_c_depth)) {
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return OTS_FAILURE();
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}
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if (maxp->max_zones == 0) {
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// workaround for ipa*.ttf Japanese fonts.
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OTS_WARNING("bad max_zones: %u", maxp->max_zones);
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maxp->max_zones = 1;
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} else if (maxp->max_zones == 3) {
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// workaround for Ecolier-*.ttf fonts.
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OTS_WARNING("bad max_zones: %u", maxp->max_zones);
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maxp->max_zones = 2;
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}
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if ((maxp->max_zones != 1) && (maxp->max_zones != 2)) {
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return OTS_FAILURE();
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}
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} else {
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maxp->version_1 = false;
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}
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return true;
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}
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bool ots_maxp_should_serialise(OpenTypeFile *file) {
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return file->maxp;
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}
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bool ots_maxp_serialise(OTSStream *out, OpenTypeFile *file) {
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const OpenTypeMAXP *maxp = file->maxp;
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if (!out->WriteU32(maxp->version_1 ? 0x00010000 : 0x00005000) ||
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!out->WriteU16(maxp->num_glyphs)) {
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return OTS_FAILURE();
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}
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if (!maxp->version_1) return true;
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if (!out->WriteU16(maxp->max_points) ||
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!out->WriteU16(maxp->max_contours) ||
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!out->WriteU16(maxp->max_c_points) ||
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!out->WriteU16(maxp->max_c_contours)) {
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return OTS_FAILURE();
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}
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if (g_transcode_hints) {
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if (!out->WriteU16(maxp->max_zones) ||
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!out->WriteU16(maxp->max_t_points) ||
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!out->WriteU16(maxp->max_storage) ||
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!out->WriteU16(maxp->max_fdefs) ||
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!out->WriteU16(maxp->max_idefs) ||
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!out->WriteU16(maxp->max_stack) ||
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!out->WriteU16(maxp->max_size_glyf_instructions)) {
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return OTS_FAILURE();
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}
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} else {
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if (!out->WriteU16(1) || // max zones
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!out->WriteU16(0) || // max twilight points
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!out->WriteU16(0) || // max storage
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!out->WriteU16(0) || // max function defs
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!out->WriteU16(0) || // max instruction defs
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!out->WriteU16(0) || // max stack elements
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!out->WriteU16(0)) { // max instruction byte count
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return OTS_FAILURE();
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}
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}
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if (!out->WriteU16(maxp->max_c_components) ||
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!out->WriteU16(maxp->max_c_depth)) {
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return OTS_FAILURE();
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}
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return true;
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}
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void ots_maxp_free(OpenTypeFile *file) {
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delete file->maxp;
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}
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} // namespace ots
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