Revert of Updating OTS repo from https://github.com/khaledhosny/ots.git

third_party/ots/src/ltsh.cc

-// 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 "ltsh.h"
-
-#include "maxp.h"
-
-// LTSH - Linear Threshold
-// http://www.microsoft.com/typography/otspec/ltsh.htm
-
-#define TABLE_NAME "LTSH"
-
-#define DROP_THIS_TABLE(...) \
-  do { \
-    OTS_FAILURE_MSG_(file, TABLE_NAME ": " __VA_ARGS__); \
-    OTS_FAILURE_MSG("Table discarded"); \
-    delete file->ltsh; \
-    file->ltsh = 0; \
-  } while (0)
-
-namespace ots {
-
-bool ots_ltsh_parse(OpenTypeFile *file, const uint8_t *data, size_t length) {
-  Buffer table(data, length);
-
-  if (!file->maxp) {
-    return OTS_FAILURE_MSG("Missing maxp table from font needed by ltsh");
-  }
-
-  OpenTypeLTSH *ltsh = new OpenTypeLTSH;
-  file->ltsh = ltsh;
-
-  uint16_t num_glyphs = 0;
-  if (!table.ReadU16(&ltsh->version) ||
-      !table.ReadU16(&num_glyphs)) {
-    return OTS_FAILURE_MSG("Failed to read ltsh header");
-  }
-
-  if (ltsh->version != 0) {
-    DROP_THIS_TABLE("bad version: %u", ltsh->version);
-    return true;
-  }
-
-  if (num_glyphs != file->maxp->num_glyphs) {
-    DROP_THIS_TABLE("bad num_glyphs: %u", num_glyphs);
-    return true;
-  }
-
-  ltsh->ypels.reserve(num_glyphs);
-  for (unsigned i = 0; i < num_glyphs; ++i) {
-    uint8_t pel = 0;
-    if (!table.ReadU8(&pel)) {
-      return OTS_FAILURE_MSG("Failed to read pixels for glyph %d", i);
-    }
-    ltsh->ypels.push_back(pel);
-  }
-
-  return true;
-}
-
-bool ots_ltsh_should_serialise(OpenTypeFile *file) {
-  if (!file->glyf) return false;  // this table is not for CFF fonts.
-  return file->ltsh != NULL;
-}
-
-bool ots_ltsh_serialise(OTSStream *out, OpenTypeFile *file) {
-  const OpenTypeLTSH *ltsh = file->ltsh;
-
-  const uint16_t num_ypels = static_cast<uint16_t>(ltsh->ypels.size());
-  if (num_ypels != ltsh->ypels.size() ||
-      !out->WriteU16(ltsh->version) ||
-      !out->WriteU16(num_ypels)) {
-    return OTS_FAILURE_MSG("Failed to write pels size");
-  }
-  for (uint16_t i = 0; i < num_ypels; ++i) {
-    if (!out->Write(&(ltsh->ypels[i]), 1)) {
-      return OTS_FAILURE_MSG("Failed to write pixel size for glyph %d", i);
-    }
-  }
-
-  return true;
-}
-
-void ots_ltsh_free(OpenTypeFile *file) {
-  delete file->ltsh;
-}
-
-}  // namespace ots
-
-#undef TABLE_NAME
-#undef DROP_THIS_TABLE