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109 lines
3 KiB
C
109 lines
3 KiB
C
/**************************************************************************
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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
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