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/**************************************************************************
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 *
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 * Copyright 2009 VMware, Inc.  All Rights Reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the
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 * "Software"), to deal in the Software without restriction, including
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 * without limitation the rights to use, copy, modify, merge, publish,
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 * distribute, sub license, and/or sell copies of the Software, and to
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 * permit persons to whom the Software is furnished to do so, subject to
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 * the following conditions:
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 *
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 * The above copyright notice and this permission notice (including the
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 * next paragraph) shall be included in all copies or substantial portions
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 * of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 *
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 **************************************************************************/
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#ifndef PATH_UTILS_H
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#define PATH_UTILS_H
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#include "VG/openvg.h"
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#define SEGMENT_COMMAND(command) /* Extract segment type */     \
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    ((command) & 0x1e)
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#define SEGMENT_ABS_REL(command) /* Extract absolute/relative bit */ \
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    ((command) & 0x1)
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static INLINE VGint size_for_datatype(VGPathDatatype datatype)
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{
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   switch(datatype) {
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   case VG_PATH_DATATYPE_S_8:
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      return 1;
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   case VG_PATH_DATATYPE_S_16:
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      return 2;
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   case VG_PATH_DATATYPE_S_32:
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      return 4;
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   case VG_PATH_DATATYPE_F:
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      return 4;
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   default:
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      assert(!"unknown datatype");
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   }
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   return 0;
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}
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static INLINE VGint num_elements_for_segments(const VGubyte *segments,
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                                              VGint num_segments)
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{
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   VGint i;
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   VGint count = 0;
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   for (i = 0; i < num_segments; ++i) {
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      VGubyte segment = segments[i];
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      VGint command = SEGMENT_COMMAND(segment);
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      switch(command) {
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      case VG_CLOSE_PATH:
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         break;
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      case VG_MOVE_TO:
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         count += 2;
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         break;
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      case VG_LINE_TO:
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         count += 2;
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         break;
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      case VG_HLINE_TO:
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         count += 1;
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         break;
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      case VG_VLINE_TO:
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         count += 1;
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         break;
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      case VG_QUAD_TO:
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         count += 4;
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         break;
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      case VG_CUBIC_TO:
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         count += 6;
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         break;
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      case VG_SQUAD_TO:
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         count += 2;
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         break;
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      case VG_SCUBIC_TO:
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         count += 4;
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         break;
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      case VG_SCCWARC_TO:
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         count += 5;
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         break;
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      case VG_SCWARC_TO:
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         count += 5;
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         break;
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      case VG_LCCWARC_TO:
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         count += 5;
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         break;
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      case VG_LCWARC_TO:
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         count += 5;
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         break;
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      default:
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         assert(!"Unknown segment!");
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      }
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   }
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   return count;
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}
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#endif