1/*
2 * Copyright 2013 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#ifndef SkFontStream_DEFINED
9#define SkFontStream_DEFINED
10
11class SkStream;
12
13#include "include/core/SkTypeface.h"
14
15class SkFontStream {
16public:
17 /**
18 * Return the number of shared directories inside a TTC sfnt, or return 1
19 * if the stream is a normal sfnt (ttf). If there is an error or
20 * no directory is found, return 0.
21 *
22 * Note: the stream is rewound initially, but is returned at an arbitrary
23 * read offset.
24 */
25 static int CountTTCEntries(SkStream*);
26
27 /**
28 * @param ttcIndex 0 for normal sfnts, or the index within a TTC sfnt.
29 *
30 * Note: the stream is rewound initially, but is returned at an arbitrary
31 * read offset.
32 */
33 static int GetTableTags(SkStream*, int ttcIndex, SkFontTableTag tags[]);
34
35 /**
36 * @param ttcIndex 0 for normal sfnts, or the index within a TTC sfnt.
37 *
38 * Note: the stream is rewound initially, but is returned at an arbitrary
39 * read offset.
40 */
41 static size_t GetTableData(SkStream*, int ttcIndex, SkFontTableTag tag,
42 size_t offset, size_t length, void* data);
43
44 static size_t GetTableSize(SkStream* stream, int ttcIndex, SkFontTableTag tag) {
45 return GetTableData(stream, ttcIndex, tag, 0, ~0U, nullptr);
46 }
47};
48
49#endif
50