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[colr] Check layer record access

This commit is contained in:
Behdad Esfahbod 2018-04-17 15:32:02 +02:00
parent 5dadbb0fa0
commit 924803166e
1 changed files with 8 additions and 1 deletions
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9
src/hb-ot-color-colr-table.hh
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@ -110,13 +110,20 @@ struct COLR
return true;
}
inline void get_layer_record (unsigned int record,
inline bool get_layer_record (unsigned int record,
hb_codepoint_t *glyph_id /* OUT */,
unsigned int *palette_index /* OUT */) const
{
if (unlikely (record >= numLayers))
{
*glyph_id = 0;
*palette_index = 0xFFFF;
return false;
}
const LayerRecord &layer = (this+layersZ)[record];
*glyph_id = layer.glyphid;
*palette_index = layer.colorIdx;
return true;
}
protected: