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