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/****************************************************************************
*
* ftmmtypes.h
*
* OpenType Variations type definitions for internal use
* with the multi-masters service (specification).
*
* Copyright (C) 2022-2023 by
* David Turner, Robert Wilhelm, Werner Lemberg, George Williams, and
* Dominik Röttsches.
*
* This file is part of the FreeType project, and may only be used,
* modified, and distributed under the terms of the FreeType project
* license, LICENSE.TXT. By continuing to use, modify, or distribute
* this file you indicate that you have read the license and
* understand and accept it fully.
*
*/
#ifndef FTMMTYPES_H_
#define FTMMTYPES_H_
FT_BEGIN_HEADER
typedef FT_Int32 FT_ItemVarDelta;
typedef struct GX_ItemVarDataRec_
{
FT_UInt itemCount; /* Number of delta sets per item. */
FT_UInt regionIdxCount; /* Number of region indices. */
FT_UInt* regionIndices; /* Array of `regionCount` indices; */
/* these index `varRegionList`. */
FT_Byte* deltaSet; /* Array of `itemCount` deltas; */
/* use `innerIndex` for this array. */
FT_UShort wordDeltaCount; /* Number of the first 32-bit ints */
/* or 16-bit ints of `deltaSet` */
/* depending on `longWords`. */
FT_Bool longWords; /* If true, `deltaSet` is a 32-bit */
/* array followed by a 16-bit */
/* array, otherwise a 16-bit array */
/* followed by an 8-bit array. */
} GX_ItemVarDataRec, *GX_ItemVarData;
/* contribution of one axis to a region */
typedef struct GX_AxisCoordsRec_
{
FT_Fixed startCoord;
FT_Fixed peakCoord; /* zero means no effect (factor = 1) */
FT_Fixed endCoord;
} GX_AxisCoordsRec, *GX_AxisCoords;
typedef struct GX_VarRegionRec_
{
GX_AxisCoords axisList; /* array of axisCount records */
} GX_VarRegionRec, *GX_VarRegion;
/* item variation store */
typedef struct GX_ItemVarStoreRec_
{
FT_UInt dataCount;
GX_ItemVarData varData; /* array of dataCount records; */
/* use `outerIndex' for this array */
FT_UShort axisCount;
FT_UInt regionCount; /* total number of regions defined */
GX_VarRegion varRegionList;
} GX_ItemVarStoreRec, *GX_ItemVarStore;
typedef struct GX_DeltaSetIdxMapRec_
{
FT_ULong mapCount;
FT_UInt* outerIndex; /* indices to item var data */
FT_UInt* innerIndex; /* indices to delta set */
} GX_DeltaSetIdxMapRec, *GX_DeltaSetIdxMap;
FT_END_HEADER
#endif /* FTMMTYPES_H_ */
/* END */
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