1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/ots/src/prep.cc Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,52 @@
1.4 +// Copyright (c) 2009 The Chromium Authors. All rights reserved.
1.5 +// Use of this source code is governed by a BSD-style license that can be
1.6 +// found in the LICENSE file.
1.7 +
1.8 +#include "prep.h"
1.9 +
1.10 +// prep - Control Value Program
1.11 +// http://www.microsoft.com/typography/otspec/prep.htm
1.12 +
1.13 +#define TABLE_NAME "prep"
1.14 +
1.15 +namespace ots {
1.16 +
1.17 +bool ots_prep_parse(OpenTypeFile *file, const uint8_t *data, size_t length) {
1.18 + Buffer table(data, length);
1.19 +
1.20 + OpenTypePREP *prep = new OpenTypePREP;
1.21 + file->prep = prep;
1.22 +
1.23 + if (length >= 128 * 1024u) {
1.24 + return OTS_FAILURE_MSG("table length %ld > 120K", length); // almost all prep tables are less than 9k bytes.
1.25 + }
1.26 +
1.27 + if (!table.Skip(length)) {
1.28 + return OTS_FAILURE_MSG("Failed to read table of length %ld", length);
1.29 + }
1.30 +
1.31 + prep->data = data;
1.32 + prep->length = length;
1.33 + return true;
1.34 +}
1.35 +
1.36 +bool ots_prep_should_serialise(OpenTypeFile *file) {
1.37 + if (!file->glyf) return false; // this table is not for CFF fonts.
1.38 + return g_transcode_hints && file->prep;
1.39 +}
1.40 +
1.41 +bool ots_prep_serialise(OTSStream *out, OpenTypeFile *file) {
1.42 + const OpenTypePREP *prep = file->prep;
1.43 +
1.44 + if (!out->Write(prep->data, prep->length)) {
1.45 + return OTS_FAILURE_MSG("Failed to write table length");
1.46 + }
1.47 +
1.48 + return true;
1.49 +}
1.50 +
1.51 +void ots_prep_free(OpenTypeFile *file) {
1.52 + delete file->prep;
1.53 +}
1.54 +
1.55 +} // namespace ots
