reed@google.com | 6ec97b6 | 2013-03-04 15:16:06 +0000 | [diff] [blame] | 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 | |
| 11 | class SkStream; |
| 12 | |
| 13 | #include "SkTypeface.h" |
| 14 | |
| 15 | class SkFontStream { |
| 16 | public: |
reed@google.com | 90ee448 | 2013-03-05 20:50:47 +0000 | [diff] [blame] | 17 | /** |
reed@google.com | ed268bf | 2013-03-11 20:13:36 +0000 | [diff] [blame] | 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. |
reed@google.com | 5bfc839 | 2013-03-05 22:12:11 +0000 | [diff] [blame] | 21 | * |
reed@google.com | 90ee448 | 2013-03-05 20:50:47 +0000 | [diff] [blame] | 22 | * Note: the stream is rewound initially, but is returned at an arbitrary |
| 23 | * read offset. |
| 24 | */ |
reed@google.com | 5bfc839 | 2013-03-05 22:12:11 +0000 | [diff] [blame] | 25 | static int CountTTCEntries(SkStream*); |
reed@google.com | 90ee448 | 2013-03-05 20:50:47 +0000 | [diff] [blame] | 26 | |
| 27 | /** |
reed@google.com | 5bfc839 | 2013-03-05 22:12:11 +0000 | [diff] [blame] | 28 | * @param ttcIndex 0 for normal sfnts, or the index within a TTC sfnt. |
| 29 | * |
reed@google.com | 90ee448 | 2013-03-05 20:50:47 +0000 | [diff] [blame] | 30 | * Note: the stream is rewound initially, but is returned at an arbitrary |
| 31 | * read offset. |
| 32 | */ |
reed@google.com | 5bfc839 | 2013-03-05 22:12:11 +0000 | [diff] [blame] | 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, |
reed@google.com | 6ec97b6 | 2013-03-04 15:16:06 +0000 | [diff] [blame] | 42 | size_t offset, size_t length, void* data); |
reed@google.com | ed268bf | 2013-03-11 20:13:36 +0000 | [diff] [blame] | 43 | |
| 44 | static size_t GetTableSize(SkStream* stream, int ttcIndex, SkFontTableTag tag) { |
| 45 | return GetTableData(stream, ttcIndex, tag, 0, ~0U, NULL); |
| 46 | } |
reed@google.com | 6ec97b6 | 2013-03-04 15:16:06 +0000 | [diff] [blame] | 47 | }; |
| 48 | |
| 49 | #endif |