1/*
2 * Copyright 2011 Google Inc. All Rights Reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16// File is originally from Chromium third_party/sfntly/src/subsetter.
17// Use as test case in sfntly so that problems can be caught in upstream early.
18#ifndef SFNTLY_CPP_SRC_TEST_FONT_SUBSETTER_H_
19#define SFNTLY_CPP_SRC_TEST_FONT_SUBSETTER_H_
20
21#include <stddef.h>
22
23class SfntlyWrapper {
24 public:
25
26  // Font subsetting API
27  //
28  // Input TTF/TTC/OTF fonts, specify the glyph IDs to subset, and the subset
29  // font is returned in |output_buffer| (caller to delete[]).  Return value is
30  // the length of output_buffer allocated.
31  //
32  // If subsetting fails, a negative value is returned.  If none of the glyph
33  // IDs specified is found, the function will return 0.
34  //
35  // |font_name|      Font name, required for TTC files.  If specified NULL,
36  //                  the first available font is selected.
37  // |original_font|  Original font file contents.
38  // |font_size|      Size of |original_font| in bytes.
39  // |glyph_ids|      Glyph IDs to subset.  If the specified glyph ID is not
40  //                  found in the font file, it will be ignored silently.
41  // |glyph_count|    Number of glyph IDs in |glyph_ids|
42  // |output_buffer|  Generated subset font.  Caller to delete[].
43  static int SubsetFont(const char* font_name,
44                        const unsigned char* original_font,
45                        size_t font_size,
46                        const unsigned int* glyph_ids,
47                        size_t glyph_count,
48                        unsigned char** output_buffer);
49};
50
51#endif  // SFNTLY_CPP_SRC_TEST_FONT_SUBSETTER_H_
52