diff -r 000000000000 -r 6474c204b198 gfx/ots/src/maxp.cc --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gfx/ots/src/maxp.cc Wed Dec 31 06:09:35 2014 +0100 @@ -0,0 +1,130 @@ +// 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(OpenTypeFile *file, const uint8_t *data, size_t length) { + Buffer table(data, length); + + OpenTypeMAXP *maxp = new OpenTypeMAXP; + file->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(OpenTypeFile *file) { + return file->maxp != NULL; +} + +bool ots_maxp_serialise(OTSStream *out, OpenTypeFile *file) { + const OpenTypeMAXP *maxp = file->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 (g_transcode_hints) { + 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"); + } + } else { + if (!out->WriteU16(1) || // max zones + !out->WriteU16(0) || // max twilight points + !out->WriteU16(0) || // max storage + !out->WriteU16(0) || // max function defs + !out->WriteU16(0) || // max instruction defs + !out->WriteU16(0) || // max stack elements + !out->WriteU16(0)) { // max instruction byte count + 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_free(OpenTypeFile *file) { + delete file->maxp; +} + +} // namespace ots