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 then so muse SK_CAN_USE_FLOAT, 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 /* If zlib is available and you want to support the flate compression 109 algorithm (used in PDF generation), define SK_ZLIB_INCLUDE to be the 110 include path. 111 */ 112 //#define SK_ZLIB_INCLUDE <zlib.h> 113 #define SK_ZLIB_INCLUDE "third_party/zlib/zlib.h" 114 115 /* Define this to allow PDF scalars above 32k. The PDF/A spec doesn't allow 116 them, but modern PDF interpreters should handle them just fine. 117 */ 118 //#define SK_ALLOW_LARGE_PDF_SCALARS 119 120 /* Define this to provide font subsetter for font subsetting when generating 121 PDF documents. 122 */ 123 #define SK_SFNTLY_SUBSETTER \ 124 "third_party/sfntly/cpp/src/sample/chromium/font_subsetter.h" 125 126 /* Define this to remove dimension checks on bitmaps. Not all blits will be 127 correct yet, so this is mostly for debugging the implementation. 128 */ 129 //#define SK_ALLOW_OVER_32K_BITMAPS 130 131 132 /* To write debug messages to a console, skia will call SkDebugf(...) following 133 printf conventions (e.g. const char* format, ...). If you want to redirect 134 this to something other than printf, define yours here 135 */ 136 //#define SkDebugf(...) MyFunction(__VA_ARGS__) 137 138 139 /* If SK_DEBUG is defined, then you can optionally define SK_SUPPORT_UNITTEST 140 which will run additional self-tests at startup. These can take a long time, 141 so this flag is optional. 142 */ 143 #ifdef SK_DEBUG 144 #define SK_SUPPORT_UNITTEST 145 #endif 146 147 /* If your system embeds skia and has complex event logging, define this 148 symbol to name a file that maps the following macros to your system's 149 equivalents: 150 SK_TRACE_EVENT0(event) 151 SK_TRACE_EVENT1(event, name1, value1) 152 SK_TRACE_EVENT2(event, name1, value1, name2, value2) 153 src/utils/SkDebugTrace.h has a trivial implementation that writes to 154 the debug output stream. If SK_USER_TRACE_INCLUDE_FILE is not defined, 155 SkTrace.h will define the above three macros to do nothing. 156 */ 157 #undef SK_USER_TRACE_INCLUDE_FILE 158 159 // ===== Begin Chrome-specific definitions ===== 160 161 #define SK_SCALAR_IS_FLOAT 162 #undef SK_SCALAR_IS_FIXED 163 164 #define SK_MSCALAR_IS_DOUBLE 165 #undef SK_MSCALAR_IS_FLOAT 166 167 #define GR_MAX_OFFSCREEN_AA_DIM 512 168 169 // Log the file and line number for assertions. 170 #define SkDebugf(...) SkDebugf_FileLine(__FILE__, __LINE__, false, __VA_ARGS__) 171 SK_API void SkDebugf_FileLine(const char* file, int line, bool fatal, 172 const char* format, ...); 173 174 // Marking the debug print as "fatal" will cause a debug break, so we don't need 175 // a separate crash call here. 176 #define SK_DEBUGBREAK(cond) do { if (!(cond)) { \ 177 SkDebugf_FileLine(__FILE__, __LINE__, true, \ 178 "%s:%d: failed assertion \"%s\"\n", \ 179 __FILE__, __LINE__, #cond); } } while (false) 180 181 #if !defined(ANDROID) // On Android, we use the skia default settings. 182 #define SK_A32_SHIFT 24 183 #define SK_R32_SHIFT 16 184 #define SK_G32_SHIFT 8 185 #define SK_B32_SHIFT 0 186 #endif 187 188 #if defined(SK_BUILD_FOR_WIN32) 189 190 #define SK_BUILD_FOR_WIN 191 192 // VC8 doesn't support stdint.h, so we define those types here. 193 #define SK_IGNORE_STDINT_DOT_H 194 typedef signed char int8_t; 195 typedef unsigned char uint8_t; 196 typedef short int16_t; 197 typedef unsigned short uint16_t; 198 typedef int int32_t; 199 typedef unsigned uint32_t; 200 201 // VC doesn't support __restrict__, so make it a NOP. 202 #undef SK_RESTRICT 203 #define SK_RESTRICT 204 205 // Skia uses this deprecated bzero function to fill zeros into a string. 206 #define bzero(str, len) memset(str, 0, len) 207 208 #elif defined(SK_BUILD_FOR_MAC) 209 210 #define SK_CPU_LENDIAN 211 #undef SK_CPU_BENDIAN 212 213 #elif defined(SK_BUILD_FOR_UNIX) 214 215 // Prefer FreeType's emboldening algorithm to Skia's 216 // TODO: skia used to just use hairline, but has improved since then, so 217 // we should revisit this choice... 218 #define SK_USE_FREETYPE_EMBOLDEN 219 220 #ifdef SK_CPU_BENDIAN 221 // Above we set the order for ARGB channels in registers. I suspect that, on 222 // big endian machines, you can keep this the same and everything will work. 223 // The in-memory order will be different, of course, but as long as everything 224 // is reading memory as words rather than bytes, it will all work. However, if 225 // you find that colours are messed up I thought that I would leave a helpful 226 // locator for you. Also see the comments in 227 // base/gfx/bitmap_platform_device_linux.h 228 #error Read the comment at this location 229 #endif 230 231 #endif 232 233 // The default crash macro writes to badbeef which can cause some strange 234 // problems. Instead, pipe this through to the logging function as a fatal 235 // assertion. 236 #define SK_CRASH() SkDebugf_FileLine(__FILE__, __LINE__, true, "SK_CRASH") 237 238 // Uncomment the following line to forward skia trace events to Chrome 239 // tracing. 240 // #define SK_USER_TRACE_INCLUDE_FILE "skia/ext/skia_trace_shim.h" 241 242 // ===== End Chrome-specific definitions ===== 243 244 #endif 245
