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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /gfx/ots/src/maxp.cc
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'gfx/ots/src/maxp.cc')
-rw-r--r--gfx/ots/src/maxp.cc125
1 files changed, 125 insertions, 0 deletions
diff --git a/gfx/ots/src/maxp.cc b/gfx/ots/src/maxp.cc
new file mode 100644
index 000000000..41e29a745
--- /dev/null
+++ b/gfx/ots/src/maxp.cc
@@ -0,0 +1,125 @@
+// Copyright (c) 2009 The Chromium 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
+
+#define TABLE_NAME "maxp"
+
+namespace ots {
+
+bool ots_maxp_parse(Font *font, const uint8_t *data, size_t length) {
+ Buffer table(data, length);
+
+ OpenTypeMAXP *maxp = new OpenTypeMAXP;
+ font->maxp = maxp;
+
+ uint32_t version = 0;
+ if (!table.ReadU32(&version)) {
+ return OTS_FAILURE_MSG("Failed to read version of maxp table");
+ }
+
+ if (version >> 16 > 1) {
+ return OTS_FAILURE_MSG("Bad maxp version %d", version);
+ }
+
+ if (!table.ReadU16(&maxp->num_glyphs)) {
+ return OTS_FAILURE_MSG("Failed to read number of glyphs from maxp table");
+ }
+
+ if (!maxp->num_glyphs) {
+ return OTS_FAILURE_MSG("Bad number of glyphs 0 in maxp table");
+ }
+
+ if (version >> 16 == 1) {
+ maxp->version_1 = true;
+ if (!table.ReadU16(&maxp->max_points) ||
+ !table.ReadU16(&maxp->max_contours) ||
+ !table.ReadU16(&maxp->max_c_points) ||
+ !table.ReadU16(&maxp->max_c_contours) ||
+ !table.ReadU16(&maxp->max_zones) ||
+ !table.ReadU16(&maxp->max_t_points) ||
+ !table.ReadU16(&maxp->max_storage) ||
+ !table.ReadU16(&maxp->max_fdefs) ||
+ !table.ReadU16(&maxp->max_idefs) ||
+ !table.ReadU16(&maxp->max_stack) ||
+ !table.ReadU16(&maxp->max_size_glyf_instructions) ||
+ !table.ReadU16(&maxp->max_c_components) ||
+ !table.ReadU16(&maxp->max_c_depth)) {
+ return OTS_FAILURE_MSG("Failed to read maxp table");
+ }
+
+ if (maxp->max_zones == 0) {
+ // workaround for ipa*.ttf Japanese fonts.
+ OTS_WARNING("bad max_zones: %u", maxp->max_zones);
+ maxp->max_zones = 1;
+ } else if (maxp->max_zones == 3) {
+ // workaround for Ecolier-*.ttf fonts.
+ OTS_WARNING("bad max_zones: %u", maxp->max_zones);
+ maxp->max_zones = 2;
+ }
+
+ if ((maxp->max_zones != 1) && (maxp->max_zones != 2)) {
+ return OTS_FAILURE_MSG("Bad max zones %d in maxp", maxp->max_zones);
+ }
+ } else {
+ maxp->version_1 = false;
+ }
+
+ return true;
+}
+
+bool ots_maxp_should_serialise(Font *font) {
+ return font->maxp != NULL;
+}
+
+bool ots_maxp_serialise(OTSStream *out, Font *font) {
+ const OpenTypeMAXP *maxp = font->maxp;
+
+ if (!out->WriteU32(maxp->version_1 ? 0x00010000 : 0x00005000) ||
+ !out->WriteU16(maxp->num_glyphs)) {
+ return OTS_FAILURE_MSG("Failed to write maxp version or number of glyphs");
+ }
+
+ if (!maxp->version_1) return true;
+
+ if (!out->WriteU16(maxp->max_points) ||
+ !out->WriteU16(maxp->max_contours) ||
+ !out->WriteU16(maxp->max_c_points) ||
+ !out->WriteU16(maxp->max_c_contours)) {
+ return OTS_FAILURE_MSG("Failed to write maxp");
+ }
+
+ if (!out->WriteU16(maxp->max_zones) ||
+ !out->WriteU16(maxp->max_t_points) ||
+ !out->WriteU16(maxp->max_storage) ||
+ !out->WriteU16(maxp->max_fdefs) ||
+ !out->WriteU16(maxp->max_idefs) ||
+ !out->WriteU16(maxp->max_stack) ||
+ !out->WriteU16(maxp->max_size_glyf_instructions)) {
+ return OTS_FAILURE_MSG("Failed to write more maxp");
+ }
+
+ if (!out->WriteU16(maxp->max_c_components) ||
+ !out->WriteU16(maxp->max_c_depth)) {
+ return OTS_FAILURE_MSG("Failed to write yet more maxp");
+ }
+
+ return true;
+}
+
+void ots_maxp_reuse(Font *font, Font *other) {
+ font->maxp = other->maxp;
+ font->maxp_reused = true;
+}
+
+void ots_maxp_free(Font *font) {
+ delete font->maxp;
+}
+
+} // namespace ots
+
+#undef TABLE_NAME