michael@0: /*
michael@0:  * Copyright 2013 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #ifndef SkFontStream_DEFINED
michael@0: #define SkFontStream_DEFINED
michael@0: 
michael@0: class SkStream;
michael@0: 
michael@0: #include "SkTypeface.h"
michael@0: 
michael@0: class SkFontStream {
michael@0: public:
michael@0:     /**
michael@0:      *  Return the number of shared directories inside a TTC sfnt, or return 1
michael@0:      *  if the stream is a normal sfnt (ttf). If there is an error or
michael@0:      *  no directory is found, return 0.
michael@0:      *
michael@0:      *  Note: the stream is rewound initially, but is returned at an arbitrary
michael@0:      *  read offset.
michael@0:      */
michael@0:     static int CountTTCEntries(SkStream*);
michael@0: 
michael@0:     /**
michael@0:      *  @param ttcIndex 0 for normal sfnts, or the index within a TTC sfnt.
michael@0:      *
michael@0:      *  Note: the stream is rewound initially, but is returned at an arbitrary
michael@0:      *  read offset.
michael@0:      */
michael@0:     static int GetTableTags(SkStream*, int ttcIndex, SkFontTableTag tags[]);
michael@0: 
michael@0:     /**
michael@0:      *  @param ttcIndex 0 for normal sfnts, or the index within a TTC sfnt.
michael@0:      *
michael@0:      *  Note: the stream is rewound initially, but is returned at an arbitrary
michael@0:      *  read offset.
michael@0:      */
michael@0:     static size_t GetTableData(SkStream*, int ttcIndex, SkFontTableTag tag,
michael@0:                                size_t offset, size_t length, void* data);
michael@0: 
michael@0:     static size_t GetTableSize(SkStream* stream, int ttcIndex, SkFontTableTag tag) {
michael@0:         return GetTableData(stream, ttcIndex, tag, 0, ~0U, NULL);
michael@0:     }
michael@0: };
michael@0: 
michael@0: #endif