1 /* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SkUserConfig_DEFINED 18 #define SkUserConfig_DEFINED 19 20 /* SkTypes.h, the root of the public header files, does the following trick: 21 22 #include "SkPreConfig.h" 23 #include "SkUserConfig.h" 24 #include "SkPostConfig.h" 25 26 SkPreConfig.h runs first, and it is responsible for initializing certain 27 skia defines. 28 29 SkPostConfig.h runs last, and its job is to just check that the final 30 defines are consistent (i.e. that we don't have mutually conflicting 31 defines). 32 33 SkUserConfig.h (this file) runs in the middle. It gets to change or augment 34 the list of flags initially set in preconfig, and then postconfig checks 35 that everything still makes sense. 36 37 Below are optional defines that add, subtract, or change default behavior 38 in Skia. Your port can locally edit this file to enable/disable flags as 39 you choose, or these can be delared on your command line (i.e. -Dfoo). 40 41 By default, this include file will always default to having all of the flags 42 commented out, so including it will have no effect. 43 */ 44 45 /////////////////////////////////////////////////////////////////////////////// 46 47 /* Scalars (the fractional value type in skia) can be implemented either as 48 floats or 16.16 integers (fixed). Exactly one of these two symbols must be 49 defined. 50 */ 51 //#define SK_SCALAR_IS_FLOAT 52 //#define SK_SCALAR_IS_FIXED 53 54 55 /* Somewhat independent of how SkScalar is implemented, Skia also wants to know 56 if it can use floats at all. Naturally, if SK_SCALAR_IS_FLOAT is defined, 57 SK_CAN_USE_FLOAT must be too; but if scalars are fixed, SK_CAN_USE_FLOAT 58 can go either way. 59 */ 60 //#define SK_CAN_USE_FLOAT 61 62 /* For some performance-critical scalar operations, skia will optionally work 63 around the standard float operators if it knows that the CPU does not have 64 native support for floats. If your environment uses software floating point, 65 define this flag. 66 */ 67 //#define SK_SOFTWARE_FLOAT 68 69 70 /* Skia has lots of debug-only code. Often this is just null checks or other 71 parameter checking, but sometimes it can be quite intrusive (e.g. check that 72 each 32bit pixel is in premultiplied form). This code can be very useful 73 during development, but will slow things down in a shipping product. 74 75 By default, these mutually exclusive flags are defined in SkPreConfig.h, 76 based on the presence or absence of NDEBUG, but that decision can be changed 77 here. 78 */ 79 //#define SK_DEBUG 80 //#define SK_RELEASE 81 82 83 /* If, in debugging mode, Skia needs to stop (presumably to invoke a debugger) 84 it will call SK_CRASH(). If this is not defined it, it is defined in 85 SkPostConfig.h to write to an illegal address 86 */ 87 //#define SK_CRASH() *(int *)(uintptr_t)0 = 0 88 89 90 /* preconfig will have attempted to determine the endianness of the system, 91 but you can change these mutually exclusive flags here. 92 */ 93 //#define SK_CPU_BENDIAN 94 //#define SK_CPU_LENDIAN 95 96 97 /* Some compilers don't support long long for 64bit integers. If yours does 98 not, define this to the appropriate type. 99 */ 100 //#define SkLONGLONG int64_t 101 102 103 /* Some envorinments do not suport writable globals (eek!). If yours does not, 104 define this flag. 105 */ 106 //#define SK_USE_RUNTIME_GLOBALS 107 108 109 /* To write debug messages to a console, skia will call SkDebugf(...) following 110 printf conventions (e.g. const char* format, ...). If you want to redirect 111 this to something other than printf, define yours here 112 */ 113 //#define SkDebugf(...) MyFunction(__VA_ARGS__) 114 115 /* To enable additional blitters (and fontscaler code) to support separate 116 alpha channels for R G B channels, define SK_SUPPORT_LCDTEXT 117 */ 118 //#define SK_SUPPORT_LCDTEXT 119 120 /* If zlib is available and you want to support the flate compression 121 algorithm (used in PDF generation), define SK_ZLIB_INCLUDE to be the 122 include path. 123 */ 124 //#define SK_ZLIB_INCLUDE <zlib.h> 125 126 /* Define this to allow PDF scalars above 32k. The PDF/A spec doesn't allow 127 them, but modern PDF interpreters should handle them just fine. 128 */ 129 //#define SK_ALLOW_LARGE_PDF_SCALARS 130 131 /* Define this to remove dimension checks on bitmaps. Not all blits will be 132 correct yet, so this is mostly for debugging the implementation. 133 */ 134 //#define SK_ALLOW_OVER_32K_BITMAPS 135 136 /* If SK_DEBUG is defined, then you can optionally define SK_SUPPORT_UNITTEST 137 which will run additional self-tests at startup. These can take a long time, 138 so this flag is optional. 139 */ 140 #ifdef SK_DEBUG 141 //#define SK_SUPPORT_UNITTEST 142 #endif 143 144 /* Change the ordering to work in X windows. 145 */ 146 #ifdef SK_SAMPLES_FOR_X 147 #define SK_R32_SHIFT 16 148 #define SK_G32_SHIFT 8 149 #define SK_B32_SHIFT 0 150 #define SK_A32_SHIFT 24 151 #endif 152 153 #endif 154
