├── .gitignore ├── COPYING ├── README.md ├── src └── photoshop │ ├── mac │ ├── pngquant_About_Controller.h │ ├── pngquant_About_Controller.m │ ├── pngquant_About_Dialog.xib │ ├── pngquant_In_Controller.h │ ├── pngquant_UI_Cocoa.mm │ └── pngquant_banner.png │ ├── pngquant.cpp │ ├── pngquant.h │ ├── pngquant.r │ ├── pngquant_Scripting.cpp │ ├── pngquant_Terminology.h │ ├── pngquant_UI.h │ └── pngquant_version.h └── xcode └── xcode3 ├── English.lproj └── InfoPlist.strings ├── lodepng.cpp ├── lodepng.h ├── pngquant_Photoshop.xcodeproj └── project.pbxproj └── pngquant_Photoshop_Info.plist /.gitignore: -------------------------------------------------------------------------------- 1 | DerivedData/ 2 | -------------------------------------------------------------------------------- /COPYING: -------------------------------------------------------------------------------- 1 | LibImageQuant (http://pngquant.org): 2 | 3 | © 2009-2014 by Kornel Lesiński. 4 | © 1989, 1991 by Jef Poskanzer. 5 | © 1997, 2000, 2002 by Greg Roelofs; based on an idea by Stefan Schneider. 6 | 7 | Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies nd that both that copyright notice and this permission notice appear in supporting documentation. This software is provided "as is" without express or implied warranty. 8 | 9 | The photoshop plug-in: 10 | 11 | © 2014 Kornel Lesiński 12 | © 2013 Brendan Bolles 13 | 14 | All rights reserved. 15 | 16 | Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 17 | 18 | * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 19 | * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 20 | 21 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, TRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # [pngquant](http://pngquant.org) Photoshop plug-in 2 | 3 | It provides PNG saving [better than Save for Web](http://pngquant.org/vsphotoshop.html). Typically creates PNG files 60-70% smaller than 24/32-bit PNG from Save for Web, and unlike 8-bit PNG from Photoshop, always supports semi-transparent alpha channel. 4 | 5 | * [Download for Mac OS X](http://pngquant.org/pngquant-plugin.zip) and copy `pngquant.plugin` to `/Applications/Adobe Photoshop C*/Plug-ins/`. 6 | 7 | * [Download for Windows](http://www.fnordware.com/superpng/) (SuperPNG plug-in) 8 | 9 | To use it choose regular **Save As** and **PNG for Web (pngquant)** as the file type. A small web-optimized PNG file will be written without any prompts. 10 | 11 | ![Screenshot](http://pngquant.org/photoshop-plugin.png) 12 | 13 | ![Use Save As](http://pngquant.org/photoshop-plugin-file.png) 14 | -------------------------------------------------------------------------------- /src/photoshop/mac/pngquant_About_Controller.h: -------------------------------------------------------------------------------- 1 | /////////////////////////////////////////////////////////////////////////// 2 | // 3 | // Copyright (c) 2013, Brendan Bolles 4 | // 5 | // All rights reserved. 6 | // 7 | // Redistribution and use in source and binary forms, with or without 8 | // modification, are permitted provided that the following conditions are 9 | // met: 10 | // * Redistributions of source code must retain the above copyright 11 | // notice, this list of conditions and the following disclaimer. 12 | // * Redistributions in binary form must reproduce the above 13 | // copyright notice, this list of conditions and the following disclaimer 14 | // in the documentation and/or other materials provided with the 15 | // distribution. 16 | // 17 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 | // 29 | /////////////////////////////////////////////////////////////////////////// 30 | 31 | // ------------------------------------------------------------------------ 32 | // 33 | // pngquant Photoshop plug-in 34 | // 35 | // by Kornel Lesinski 36 | // based on code by Brendan Bolles 37 | // 38 | // ------------------------------------------------------------------------ 39 | 40 | #import 41 | 42 | @interface pngquant_About_Controller : NSObject { 43 | IBOutlet NSTextField *pngquantVersionString; 44 | IBOutlet NSTextView *about; 45 | IBOutlet NSWindow *theWindow; 46 | } 47 | 48 | - (id)init:(const char *)pngquantVersion; 49 | 50 | - (void)windowWillClose:(NSNotification *)notification; 51 | 52 | - (NSWindow *)getWindow; 53 | 54 | @end 55 | -------------------------------------------------------------------------------- /src/photoshop/mac/pngquant_About_Controller.m: -------------------------------------------------------------------------------- 1 | /////////////////////////////////////////////////////////////////////////// 2 | // 3 | // Copyright (c) 2013, Brendan Bolles 4 | // 5 | // All rights reserved. 6 | // 7 | // Redistribution and use in source and binary forms, with or without 8 | // modification, are permitted provided that the following conditions are 9 | // met: 10 | // * Redistributions of source code must retain the above copyright 11 | // notice, this list of conditions and the following disclaimer. 12 | // * Redistributions in binary form must reproduce the above 13 | // copyright notice, this list of conditions and the following disclaimer 14 | // in the documentation and/or other materials provided with the 15 | // distribution. 16 | // 17 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 | // 29 | /////////////////////////////////////////////////////////////////////////// 30 | 31 | // ------------------------------------------------------------------------ 32 | // 33 | // pngquant Photoshop plug-in 34 | // 35 | // by Kornel Lesinski 36 | // based on code by Brendan Bolles 37 | // 38 | // ------------------------------------------------------------------------ 39 | 40 | #import "pngquant_About_Controller.h" 41 | 42 | @implementation pngquant_About_Controller 43 | 44 | - (id)init:(const char *)pngquantVersion 45 | { 46 | self = [super init]; 47 | 48 | if(!([NSBundle loadNibNamed:@"pngquant_About_Dialog" owner:self])) 49 | return nil; 50 | 51 | [theWindow setDelegate:self]; 52 | 53 | [about setString:@"LibImageQuant (http://pngquant.org):\n" 54 | "\n" 55 | "© 2009-2014 by Kornel Lesiński.\n" 56 | "© 1989, 1991 by Jef Poskanzer.\n" 57 | "© 1997, 2000, 2002 by Greg Roelofs; based on an idea by Stefan Schneider.\n" 58 | "\n" 59 | "Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. This software is provided \"as is\" without express or implied warranty.\n\n" 60 | "The photoshop plug-in:\n\n" 61 | "© 2014 Kornel Lesiński\n" 62 | "© 2013 Brendan Bolles\n" 63 | "\n" 64 | "All rights reserved.\n" 65 | "\n" 66 | "Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:\n" 67 | "\n" 68 | "* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.\n" 69 | "* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.\n" 70 | "\n" 71 | "THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."]; 72 | 73 | [pngquantVersionString setStringValue:[NSString stringWithUTF8String:pngquantVersion]]; 74 | [theWindow center]; 75 | 76 | return self; 77 | } 78 | 79 | - (void)windowWillClose:(NSNotification *)notification { 80 | [NSApp stopModal]; 81 | } 82 | 83 | - (NSWindow *)getWindow { 84 | return theWindow; 85 | } 86 | 87 | @end 88 | -------------------------------------------------------------------------------- /src/photoshop/mac/pngquant_About_Dialog.xib: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 73 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | -------------------------------------------------------------------------------- /src/photoshop/mac/pngquant_In_Controller.h: -------------------------------------------------------------------------------- 1 | /////////////////////////////////////////////////////////////////////////// 2 | // 3 | // Copyright (c) 2013, Brendan Bolles 4 | // 5 | // All rights reserved. 6 | // 7 | // Redistribution and use in source and binary forms, with or without 8 | // modification, are permitted provided that the following conditions are 9 | // met: 10 | // * Redistributions of source code must retain the above copyright 11 | // notice, this list of conditions and the following disclaimer. 12 | // * Redistributions in binary form must reproduce the above 13 | // copyright notice, this list of conditions and the following disclaimer 14 | // in the documentation and/or other materials provided with the 15 | // distribution. 16 | // 17 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 | // 29 | /////////////////////////////////////////////////////////////////////////// 30 | 31 | // ------------------------------------------------------------------------ 32 | // 33 | // WebP Photoshop plug-in 34 | // 35 | // by Brendan Bolles 36 | // 37 | // ------------------------------------------------------------------------ 38 | 39 | #import 40 | 41 | #include "WebP_UI.h" 42 | 43 | @interface WebP_In_Controller : NSObject { 44 | IBOutlet NSButton *transparencyRadio; 45 | IBOutlet NSButton *channelRadio; 46 | IBOutlet NSButton *premultCheck; 47 | IBOutlet NSButton *autoCheck; 48 | IBOutlet NSWindow *theWindow; 49 | 50 | DialogAlpha defaultAlpha; 51 | BOOL defaultPremult; 52 | } 53 | - (id)init:(DialogAlpha)alpha 54 | premultiply:(BOOL)premultiply 55 | autoDialog:(BOOL)autoDialog; 56 | 57 | - (IBAction)clickedOK:(id)sender; 58 | - (IBAction)clickedCancel:(id)sender; 59 | 60 | - (IBAction)clickedSetDefaults:(id)sender; 61 | 62 | - (IBAction)trackAlpha:(id)sender; 63 | 64 | - (NSWindow *)getWindow; 65 | 66 | - (DialogAlpha)getAlpha; 67 | - (BOOL)getPremult; 68 | 69 | - (DialogAlpha)getDefaultAlpha; 70 | - (BOOL)getDefaultPremult; 71 | 72 | - (BOOL)getAuto; 73 | 74 | @end 75 | -------------------------------------------------------------------------------- /src/photoshop/mac/pngquant_UI_Cocoa.mm: -------------------------------------------------------------------------------- 1 | /////////////////////////////////////////////////////////////////////////// 2 | // 3 | // Copyright (c) 2013, Brendan Bolles 4 | // 5 | // All rights reserved. 6 | // 7 | // Redistribution and use in source and binary forms, with or without 8 | // modification, are permitted provided that the following conditions are 9 | // met: 10 | // * Redistributions of source code must retain the above copyright 11 | // notice, this list of conditions and the following disclaimer. 12 | // * Redistributions in binary form must reproduce the above 13 | // copyright notice, this list of conditions and the following disclaimer 14 | // in the documentation and/or other materials provided with the 15 | // distribution. 16 | // 17 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 | // 29 | /////////////////////////////////////////////////////////////////////////// 30 | 31 | // ------------------------------------------------------------------------ 32 | // 33 | // pngquant Photoshop plug-in 34 | // 35 | // by Kornel Lesinski 36 | // based on code by Brendan Bolles 37 | // 38 | // ------------------------------------------------------------------------ 39 | 40 | #include "pngquant_UI.h" 41 | 42 | #import "pngquant_About_Controller.h" 43 | 44 | 45 | // ========== 46 | // Only building this on 64-bit (Cocoa) architectures 47 | // ========== 48 | #if __LP64__ 49 | 50 | 51 | void MyLog(const char *str) { 52 | NSLog(@"%s", str); 53 | } 54 | 55 | void 56 | pngquant_About( 57 | const char *pngquant_version_string, 58 | const void *plugHndl, 59 | const void *mwnd) 60 | { 61 | 62 | pngquant_About_Controller *about_controller = [[pngquant_About_Controller alloc] init:pngquant_version_string]; 63 | 64 | if(about_controller) 65 | { 66 | NSWindow *the_window = [about_controller getWindow]; 67 | 68 | if(the_window) 69 | { 70 | [NSApp runModalForWindow:the_window]; 71 | 72 | [the_window close]; 73 | } 74 | 75 | [about_controller release]; 76 | } 77 | } 78 | 79 | #endif // __LP64__ 80 | -------------------------------------------------------------------------------- /src/photoshop/mac/pngquant_banner.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/kornelski/pngquant-photoshop/7128903b3a005767ddd089460a9b7dde030827c7/src/photoshop/mac/pngquant_banner.png -------------------------------------------------------------------------------- /src/photoshop/pngquant.cpp: -------------------------------------------------------------------------------- 1 | /////////////////////////////////////////////////////////////////////////// 2 | // 3 | // Copyright (c) 2013, Brendan Bolles 4 | // 5 | // All rights reserved. 6 | // 7 | // Redistribution and use in source and binary forms, with or without 8 | // modification, are permitted provided that the following conditions are 9 | // met: 10 | // * Redistributions of source code must retain the above copyright 11 | // notice, this list of conditions and the following disclaimer. 12 | // * Redistributions in binary form must reproduce the above 13 | // copyright notice, this list of conditions and the following disclaimer 14 | // in the documentation and/or other materials provided with the 15 | // distribution. 16 | // 17 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 | // 29 | /////////////////////////////////////////////////////////////////////////// 30 | 31 | // ------------------------------------------------------------------------ 32 | // 33 | // pngquant Photoshop plug-in 34 | // 35 | // by Kornel Lesinski 36 | // based on code by Brendan Bolles 37 | // 38 | // ------------------------------------------------------------------------ 39 | 40 | #include "pngquant.h" 41 | 42 | #include "pngquant_version.h" 43 | #include "pngquant_UI.h" 44 | #include "libimagequant.h" 45 | 46 | #include 47 | #include 48 | 49 | #include "lodepng.h" 50 | #include 51 | 52 | 53 | // globals needed by a bunch of Photoshop SDK routines 54 | 55 | SPBasicSuite * sSPBasic = NULL; 56 | SPPluginRef gPlugInRef = NULL; 57 | 58 | 59 | static void DoAbout(AboutRecordPtr aboutP) 60 | { 61 | const char * const plugHndl = "org.pngquant.photoshop"; 62 | const void *hwnd = aboutP; 63 | 64 | pngquant_About("Plug-in " pngquant_Version_String ", libpngquant 2.0.1.", plugHndl, hwnd); 65 | } 66 | 67 | #pragma mark- 68 | 69 | static void InitGlobals(Ptr globalPtr) 70 | { 71 | // create "globals" as a our struct global pointer so that any 72 | // macros work: 73 | GPtr globals = (GPtr)globalPtr; 74 | 75 | globals->fileH = NULL; 76 | 77 | memset(&gOptions, 0, sizeof(gOptions)); 78 | 79 | gOptions.quality = 50; 80 | gOptions.save_metadata = TRUE; 81 | } 82 | 83 | 84 | static Handle myNewHandle(GPtr globals, const int32 inSize) 85 | { 86 | if(gStuff->handleProcs != NULL && gStuff->handleProcs->numHandleProcs >= 6 && gStuff->handleProcs->newProc != NULL) 87 | { 88 | return gStuff->handleProcs->newProc(inSize); 89 | } 90 | else 91 | { 92 | return PINewHandle(inSize); 93 | } 94 | } 95 | 96 | static Ptr myLockHandle(GPtr globals, Handle h) 97 | { 98 | if(gStuff->handleProcs != NULL && gStuff->handleProcs->numHandleProcs >= 6 && gStuff->handleProcs->lockProc) 99 | { 100 | return gStuff->handleProcs->lockProc(h, TRUE); 101 | } 102 | else 103 | { 104 | return PILockHandle(h, TRUE); 105 | } 106 | } 107 | 108 | static void myUnlockHandle(GPtr globals, Handle h) 109 | { 110 | if(gStuff->handleProcs != NULL && gStuff->handleProcs->numHandleProcs >= 6 && gStuff->handleProcs->unlockProc) 111 | { 112 | gStuff->handleProcs->unlockProc(h); 113 | } 114 | else 115 | { 116 | PIUnlockHandle(h); 117 | } 118 | } 119 | 120 | static int32 myGetHandleSize(GPtr globals, Handle h) 121 | { 122 | if(gStuff->handleProcs != NULL && gStuff->handleProcs->numHandleProcs >= 6 && gStuff->handleProcs->getSizeProc) 123 | { 124 | return gStuff->handleProcs->getSizeProc(h); 125 | } 126 | else 127 | { 128 | return PIGetHandleSize(h); 129 | } 130 | } 131 | 132 | static void mySetHandleSize(GPtr globals, Handle h, const int32 inSize) 133 | { 134 | if(gStuff->handleProcs != NULL && gStuff->handleProcs->numHandleProcs >= 6 && gStuff->handleProcs->setSizeProc) 135 | { 136 | gStuff->handleProcs->setSizeProc(h, inSize); 137 | } 138 | else 139 | { 140 | PISetHandleSize(h, inSize); 141 | } 142 | } 143 | 144 | static void myDisposeHandle(GPtr globals, Handle h) 145 | { 146 | if(gStuff->handleProcs != NULL && gStuff->handleProcs->numHandleProcs >= 6 && gStuff->handleProcs->disposeProc != NULL) 147 | { 148 | gStuff->handleProcs->disposeProc(h); 149 | } 150 | else 151 | { 152 | PIDisposeHandle(h); 153 | } 154 | } 155 | 156 | static OSErr myAllocateBuffer(GPtr globals, const int32 inSize, BufferID *outBufferID) 157 | { 158 | *outBufferID = 0; 159 | 160 | if(gStuff->bufferProcs != NULL && gStuff->bufferProcs->numBufferProcs >= 4 && gStuff->bufferProcs->allocateProc != NULL) 161 | gResult = gStuff->bufferProcs->allocateProc(inSize, outBufferID); 162 | else 163 | gResult = memFullErr; 164 | 165 | return gResult; 166 | } 167 | 168 | static Ptr myLockBuffer(GPtr globals, const BufferID inBufferID, Boolean inMoveHigh) 169 | { 170 | if(gStuff->bufferProcs != NULL && gStuff->bufferProcs->numBufferProcs >= 4 && gStuff->bufferProcs->lockProc != NULL) 171 | return gStuff->bufferProcs->lockProc(inBufferID, inMoveHigh); 172 | else 173 | return NULL; 174 | } 175 | 176 | static void myFreeBuffer(GPtr globals, const BufferID inBufferID) 177 | { 178 | if(gStuff->bufferProcs != NULL && gStuff->bufferProcs->numBufferProcs >= 4 && gStuff->bufferProcs->freeProc != NULL) 179 | gStuff->bufferProcs->freeProc(inBufferID); 180 | } 181 | 182 | 183 | #pragma mark- 184 | 185 | 186 | 187 | template 188 | static bool ReadParams(GPtr globals, T *options) 189 | { 190 | bool found_revert = FALSE; 191 | 192 | if( gStuff->revertInfo != NULL ) 193 | { 194 | if( myGetHandleSize(globals, gStuff->revertInfo) == sizeof(T) ) 195 | { 196 | T *flat_options = (T *)myLockHandle(globals, gStuff->revertInfo); 197 | 198 | memcpy((char*)options, (char*)flat_options, sizeof(T) ); 199 | 200 | myUnlockHandle(globals, gStuff->revertInfo); 201 | 202 | found_revert = TRUE; 203 | } 204 | } 205 | 206 | return found_revert; 207 | } 208 | 209 | template 210 | static void WriteParams(GPtr globals, T *options) 211 | { 212 | T *flat_options = NULL; 213 | 214 | if(gStuff->hostNewHdl != NULL) // we have the handle function 215 | { 216 | if(gStuff->revertInfo == NULL) 217 | { 218 | gStuff->revertInfo = myNewHandle(globals, sizeof(T) ); 219 | } 220 | else 221 | { 222 | if(myGetHandleSize(globals, gStuff->revertInfo) != sizeof(T) ) 223 | mySetHandleSize(globals, gStuff->revertInfo, sizeof(T) ); 224 | } 225 | 226 | flat_options = (T *)myLockHandle(globals, gStuff->revertInfo); 227 | 228 | memcpy((char*)flat_options, (char*)options, sizeof(T) ); 229 | 230 | 231 | myUnlockHandle(globals, gStuff->revertInfo); 232 | } 233 | } 234 | 235 | typedef struct { 236 | unsigned8 r; 237 | unsigned8 g; 238 | unsigned8 b; 239 | unsigned8 a; 240 | } RGBApixel8; 241 | 242 | #pragma mark- 243 | 244 | static void DoNothing(GPtr globals) 245 | { 246 | } 247 | 248 | static void DoOptionsStart(GPtr globals) 249 | { 250 | ReadParams(globals, &gOptions); 251 | 252 | if( ReadScriptParamsOnWrite(globals) ) 253 | { 254 | bool have_transparency = false; 255 | const char *alpha_name = NULL; 256 | 257 | if(gStuff->hostSig == '8BIM') 258 | have_transparency = (gStuff->documentInfo && gStuff->documentInfo->mergedTransparency); 259 | else 260 | have_transparency = (gStuff->planes == 2 || gStuff->planes == 4); 261 | 262 | 263 | if(gStuff->documentInfo && gStuff->documentInfo->alphaChannels) 264 | alpha_name = gStuff->documentInfo->alphaChannels->name; 265 | 266 | pngquant_OutUI_Data params; 267 | 268 | params.quality = gOptions.quality; 269 | params.save_metadata = gOptions.save_metadata; 270 | 271 | const char * const plugHndl = "org.pngquant.photoshop"; 272 | const void *hwnd = globals; 273 | 274 | bool result = pngquant_OutUI(¶ms, have_transparency, alpha_name, plugHndl, hwnd); 275 | 276 | if(result) 277 | { 278 | gOptions.quality = params.quality; 279 | gOptions.save_metadata = params.save_metadata; 280 | 281 | WriteParams(globals, &gOptions); 282 | WriteScriptParamsOnWrite(globals); 283 | } 284 | else 285 | gResult = userCanceledErr; 286 | 287 | } 288 | } 289 | 290 | #pragma mark- 291 | 292 | static void DoEstimateStart(GPtr globals) 293 | { 294 | if(gStuff->HostSupports32BitCoordinates && gStuff->imageSize32.h && gStuff->imageSize32.v) 295 | gStuff->PluginUsing32BitCoordinates = TRUE; 296 | 297 | int width = (gStuff->PluginUsing32BitCoordinates ? gStuff->imageSize32.h : gStuff->imageSize.h); 298 | int height = (gStuff->PluginUsing32BitCoordinates ? gStuff->imageSize32.v : gStuff->imageSize.v); 299 | 300 | int64 dataBytes = (int64)width * (int64)height * (int64)gStuff->planes * (int64)(gStuff->depth >> 3); 301 | 302 | gStuff->minDataBytes = dataBytes; 303 | gStuff->maxDataBytes = dataBytes + 5000; 304 | 305 | gStuff->data = NULL; 306 | } 307 | 308 | #pragma mark- 309 | 310 | static void DoWritePrepare(GPtr globals) 311 | { 312 | gStuff->maxData = 0; 313 | } 314 | 315 | static int progress; 316 | static int ProgressReport(int percent, GPtr globals) 317 | { 318 | if (gResult != noErr) return 0; 319 | 320 | progress = percent; 321 | PIUpdateProgress(percent, 100); 322 | 323 | gResult = AdvanceState(); 324 | if (gResult != noErr) return 0; 325 | 326 | gResult = TestAbort(); 327 | if (gResult != noErr) return 0; 328 | 329 | return 1; 330 | } 331 | 332 | static void mycallback(const liq_attr *a, const char *message, void* user_info) { 333 | GPtr globals = (GPtr)user_info; 334 | 335 | PIUpdateProgress(progress++, 100); 336 | AdvanceState(); 337 | 338 | MyLog(message); 339 | } 340 | 341 | static void rgb_to_rgba_callback(liq_color row_out[], int row_index, int width, void *user_info) { 342 | FormatRecordPtr g = (FormatRecordPtr)user_info; 343 | 344 | unsigned char *rgb_row = ((unsigned char *)g->data) + g->rowBytes * row_index; 345 | 346 | for(int i=0; i < width; i++) { 347 | row_out[i].r = rgb_row[i*3]; 348 | row_out[i].g = rgb_row[i*3+1]; 349 | row_out[i].b = rgb_row[i*3+2]; 350 | row_out[i].a = 255; 351 | } 352 | } 353 | 354 | static BufferID bufferID = 0; 355 | 356 | static void DoWriteStart(GPtr globals) 357 | { 358 | ReadParams(globals, &gOptions); 359 | ReadScriptParamsOnWrite(globals); 360 | 361 | assert(gStuff->imageMode == plugInModeRGBColor); 362 | assert(gStuff->depth == 8); 363 | assert(gStuff->planes >= 3); 364 | 365 | bool have_transparency = (gStuff->planes >= 4); 366 | bool have_alpha_channel = (gStuff->channelPortProcs && gStuff->documentInfo && gStuff->documentInfo->alphaChannels); 367 | 368 | bool use_alpha = (have_transparency || have_alpha_channel); 369 | 370 | const int width = (gStuff->PluginUsing32BitCoordinates ? gStuff->imageSize32.h : gStuff->imageSize.h); 371 | const int height = (gStuff->PluginUsing32BitCoordinates ? gStuff->imageSize32.v : gStuff->imageSize.v); 372 | 373 | gStuff->loPlane = 0; 374 | gStuff->hiPlane = (have_transparency ? 3 : 2); 375 | gStuff->colBytes = sizeof(unsigned char) * (use_alpha ? 4 : 3); 376 | gStuff->rowBytes = gStuff->colBytes * width; 377 | gStuff->planeBytes = sizeof(unsigned char); 378 | 379 | gStuff->theRect.left = gStuff->theRect32.left = 0; 380 | gStuff->theRect.right = gStuff->theRect32.right = width; 381 | gStuff->theRect.top = gStuff->theRect32.top = 0; 382 | gStuff->theRect.bottom = gStuff->theRect32.bottom = height; 383 | 384 | progress=0; 385 | 386 | ReadPixelsProc ReadProc = NULL; 387 | ReadChannelDesc *alpha_channel = NULL; 388 | 389 | // ReadProc being non-null means we're going to get the channel from the channels palette 390 | if(use_alpha && 391 | gStuff->channelPortProcs && gStuff->documentInfo && gStuff->documentInfo->alphaChannels) 392 | { 393 | ReadProc = gStuff->channelPortProcs->readPixelsProc; 394 | 395 | alpha_channel = gStuff->documentInfo->alphaChannels; 396 | } 397 | 398 | 399 | int32 buffer_size = gStuff->rowBytes * height; 400 | 401 | bufferID = 0; 402 | 403 | gResult = myAllocateBuffer(globals, buffer_size, &bufferID); 404 | 405 | if(gResult == noErr) 406 | { 407 | gStuff->data = myLockBuffer(globals, bufferID, TRUE); 408 | 409 | ProgressReport(1, globals); 410 | 411 | gResult = AdvanceState(); 412 | 413 | if(gResult == noErr && ReadProc) 414 | { 415 | VRect wroteRect; 416 | VRect writeRect = { 0, 0, height, width }; 417 | PSScaling scaling; scaling.sourceRect = scaling.destinationRect = writeRect; 418 | PixelMemoryDesc memDesc = { (char *)gStuff->data, gStuff->rowBytes * 8, gStuff->colBytes * 8, 3 * 8, gStuff->depth }; 419 | 420 | gResult = ReadProc(alpha_channel->port, &scaling, &writeRect, &memDesc, &wroteRect); 421 | } 422 | } 423 | } 424 | 425 | 426 | static void DoWriteContinue(GPtr globals) 427 | { 428 | liq_attr *attr = liq_attr_create(); 429 | liq_set_log_callback(attr, mycallback, (void*)globals); 430 | 431 | const int width = (gStuff->PluginUsing32BitCoordinates ? gStuff->imageSize32.h : gStuff->imageSize.h); 432 | const int height = (gStuff->PluginUsing32BitCoordinates ? gStuff->imageSize32.v : gStuff->imageSize.v); 433 | 434 | if (width * height > 1024*1024) { 435 | liq_set_speed(attr, 5); 436 | } else if (width * height < 128*128) { 437 | liq_set_speed(attr, 2); 438 | liq_set_quality(attr, 0, 95); 439 | } 440 | 441 | liq_image *img; 442 | if (gStuff->planes == 4) { 443 | img = liq_image_create_rgba(attr, gStuff->data, width, height, 0); 444 | } else { 445 | img = liq_image_create_custom(attr, rgb_to_rgba_callback, gStuff, width, height, 0); 446 | } 447 | 448 | ProgressReport(2, globals); 449 | 450 | liq_result *res = liq_quantize_image(attr, img); 451 | 452 | size_t outbuf_size = width*height; 453 | unsigned char *outbuf = (unsigned char *)malloc(outbuf_size); 454 | 455 | liq_set_dithering_level(res, 1.0f); 456 | 457 | if (ProgressReport(50, globals)) liq_write_remapped_image(res, img, outbuf, outbuf_size); 458 | 459 | ProgressReport(80, globals); 460 | 461 | liq_image_destroy(img); 462 | 463 | const liq_palette *palette = liq_get_palette(res); 464 | 465 | LodePNGState state; 466 | lodepng_state_init(&state); 467 | 468 | state.info_raw.colortype = LCT_PALETTE; 469 | state.info_raw.bitdepth = 8; 470 | state.info_png.color.colortype = LCT_PALETTE; 471 | state.info_png.color.bitdepth = palette->count <= 16 ? 4 : 8; 472 | state.encoder.auto_convert = LAC_NO; 473 | 474 | for(int i=0; i < palette->count; i++) { 475 | lodepng_palette_add(&state.info_png.color, palette->entries[i].r, palette->entries[i].g, palette->entries[i].b, palette->entries[i].a); 476 | lodepng_palette_add(&state.info_raw, palette->entries[i].r, palette->entries[i].g, palette->entries[i].b, palette->entries[i].a); 477 | } 478 | 479 | unsigned char *compressed = NULL; 480 | size_t compressed_size = 0; 481 | lodepng_encode(&compressed, &compressed_size, outbuf, width, height, &state); 482 | 483 | free(outbuf); 484 | liq_result_destroy(res); 485 | 486 | if (ProgressReport(95, globals)) { 487 | ByteCount count = compressed_size; 488 | OSErr result = FSWriteFork(gStuff->dataFork, fsAtMark, 0, count, (const void *)compressed, &count); 489 | 490 | if (result != noErr || count != compressed_size) { 491 | gResult = formatBadParameters; 492 | } 493 | } 494 | free(compressed); 495 | 496 | liq_attr_destroy(attr); 497 | 498 | ProgressReport(100, globals); 499 | 500 | myFreeBuffer(globals, bufferID); 501 | gStuff->data = NULL; 502 | MyLog("Freed"); 503 | } 504 | 505 | 506 | static void DoWriteFinish(GPtr globals) 507 | { 508 | if(gStuff->hostSig != 'FXTC') 509 | WriteScriptParamsOnWrite(globals); 510 | } 511 | 512 | #pragma mark- 513 | 514 | 515 | DLLExport MACPASCAL void PluginMain(const short selector, 516 | FormatRecord *formatParamBlock, 517 | intptr_t *data, 518 | short *result) 519 | { 520 | if (selector == formatSelectorAbout) 521 | { 522 | sSPBasic = ((AboutRecordPtr)formatParamBlock)->sSPBasic; 523 | 524 | DoAbout((AboutRecordPtr)formatParamBlock); 525 | } 526 | else 527 | { 528 | sSPBasic = formatParamBlock->sSPBasic; //thanks Tom 529 | 530 | gPlugInRef = (SPPluginRef)formatParamBlock->plugInRef; 531 | 532 | static const FProc routineForSelector [] = 533 | { 534 | /* formatSelectorAbout DoAbout, */ 535 | 536 | /* formatSelectorReadPrepare */ NULL, 537 | /* formatSelectorReadStart */ NULL, 538 | /* formatSelectorReadContinue */ NULL, 539 | /* formatSelectorReadFinish */ NULL, 540 | 541 | /* formatSelectorOptionsPrepare */ DoNothing, 542 | /* formatSelectorOptionsStart */ DoNothing, 543 | /* formatSelectorOptionsContinue */ NULL, 544 | /* formatSelectorOptionsFinish */ DoNothing, 545 | 546 | /* formatSelectorEstimatePrepare */ DoNothing, 547 | /* formatSelectorEstimateStart */ DoEstimateStart, 548 | /* formatSelectorEstimateContinue */ DoNothing, 549 | /* formatSelectorEstimateFinish */ DoNothing, 550 | 551 | /* formatSelectorWritePrepare */ DoWritePrepare, 552 | /* formatSelectorWriteStart */ DoWriteStart, 553 | /* formatSelectorWriteContinue */ DoWriteContinue, 554 | /* formatSelectorWriteFinish */ DoWriteFinish, 555 | }; 556 | 557 | Ptr globalPtr = NULL; // Pointer for global structure 558 | GPtr globals = NULL; // actual globals 559 | 560 | 561 | if(formatParamBlock->handleProcs) 562 | { 563 | bool must_init = false; 564 | 565 | if(!*data) 566 | { 567 | *data = (intptr_t)formatParamBlock->handleProcs->newProc(sizeof(Globals)); 568 | 569 | must_init = true; 570 | } 571 | 572 | if(*data) 573 | { 574 | globalPtr = formatParamBlock->handleProcs->lockProc((Handle)*data, TRUE); 575 | 576 | if(must_init) 577 | InitGlobals(globalPtr); 578 | } 579 | else 580 | { 581 | *result = memFullErr; 582 | return; 583 | } 584 | 585 | globals = (GPtr)globalPtr; 586 | 587 | globals->result = result; 588 | globals->formatParamBlock = formatParamBlock; 589 | } 590 | else 591 | { 592 | // old lame way 593 | globalPtr = AllocateGlobals(result, 594 | formatParamBlock, 595 | formatParamBlock->handleProcs, 596 | sizeof(Globals), 597 | data, 598 | InitGlobals); 599 | 600 | if(globalPtr == NULL) 601 | { // Something bad happened if we couldn't allocate our pointer. 602 | // Fortunately, everything's already been cleaned up, 603 | // so all we have to do is report an error. 604 | 605 | *result = memFullErr; 606 | return; 607 | } 608 | 609 | // Get our "globals" variable assigned as a Global Pointer struct with the 610 | // data we've returned: 611 | globals = (GPtr)globalPtr; 612 | } 613 | 614 | 615 | // Dispatch selector 616 | if (selector > formatSelectorAbout && selector <= formatSelectorWriteFinish && routineForSelector[selector-1]) 617 | (routineForSelector[selector-1])(globals); // dispatch using jump table 618 | else 619 | gResult = formatBadParameters; 620 | 621 | 622 | if((Handle)*data != NULL) 623 | { 624 | if(formatParamBlock->handleProcs) 625 | { 626 | formatParamBlock->handleProcs->unlockProc((Handle)*data); 627 | } 628 | else 629 | { 630 | PIUnlockHandle((Handle)*data); 631 | } 632 | } 633 | } // about selector special 634 | } 635 | -------------------------------------------------------------------------------- /src/photoshop/pngquant.h: -------------------------------------------------------------------------------- 1 | /////////////////////////////////////////////////////////////////////////// 2 | // 3 | // Copyright (c) 2013, Brendan Bolles 4 | // 5 | // All rights reserved. 6 | // 7 | // Redistribution and use in source and binary forms, with or without 8 | // modification, are permitted provided that the following conditions are 9 | // met: 10 | // * Redistributions of source code must retain the above copyright 11 | // notice, this list of conditions and the following disclaimer. 12 | // * Redistributions in binary form must reproduce the above 13 | // copyright notice, this list of conditions and the following disclaimer 14 | // in the documentation and/or other materials provided with the 15 | // distribution. 16 | // 17 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 | // 29 | /////////////////////////////////////////////////////////////////////////// 30 | 31 | // ------------------------------------------------------------------------ 32 | // 33 | // pngquant Photoshop plug-in 34 | // 35 | // by Kornel Lesinski 36 | // based on code by Brendan Bolles 37 | // 38 | // ------------------------------------------------------------------------ 39 | 40 | #ifndef __pngquant_Photoshop_H__ 41 | #define __pngquant_Photoshop_H__ 42 | 43 | 44 | #include "PIDefines.h" 45 | #include "PIFormat.h" 46 | #include "PIUtilities.h" 47 | #include "PIProperties.h" 48 | 49 | typedef struct { 50 | uint8 quality; 51 | Boolean save_metadata; 52 | uint8 reserved[250]; 53 | } pngquant_outData; 54 | 55 | 56 | typedef struct Globals 57 | { // This is our structure that we use to pass globals between routines: 58 | 59 | short *result; // Must always be first in Globals. 60 | FormatRecord *formatParamBlock; // Must always be second in Globals. 61 | 62 | Handle fileH; // stores the entire binary file 63 | 64 | pngquant_outData options; 65 | 66 | } Globals, *GPtr, **GHdl; // *GPtr = global pointer; **GHdl = global handle 67 | 68 | // The routines that are dispatched to from the jump list should all be 69 | // defined as 70 | // void RoutineName (GPtr globals); 71 | // And this typedef will be used as the type to create a jump list: 72 | typedef void (* FProc)(GPtr globals); 73 | 74 | 75 | //------------------------------------------------------------------------------- 76 | // Globals -- definitions and macros 77 | //------------------------------------------------------------------------------- 78 | 79 | #define gResult (*(globals->result)) 80 | #define gStuff (globals->formatParamBlock) 81 | 82 | #define gInOptions (globals->in_options) 83 | #define gOptions (globals->options) 84 | 85 | //------------------------------------------------------------------------------- 86 | // Prototypes 87 | //------------------------------------------------------------------------------- 88 | 89 | 90 | // Everything comes in and out of PluginMain. It must be first routine in source: 91 | DLLExport MACPASCAL void PluginMain (const short selector, 92 | FormatRecord *formatParamBlock, 93 | intptr_t *data, 94 | short *result); 95 | 96 | // Scripting functions 97 | Boolean ReadScriptParamsOnWrite (GPtr globals); // Read any scripting params. 98 | OSErr WriteScriptParamsOnWrite (GPtr globals); // Write any scripting params. 99 | 100 | //------------------------------------------------------------------------------- 101 | 102 | #endif // __pngquant_Photoshop_H__ 103 | -------------------------------------------------------------------------------- /src/photoshop/pngquant.r: -------------------------------------------------------------------------------- 1 | 2 | /////////////////////////////////////////////////////////////////////////// 3 | // 4 | // Copyright (c) 2013, Brendan Bolles 5 | // 6 | // All rights reserved. 7 | // 8 | // Redistribution and use in source and binary forms, with or without 9 | // modification, are permitted provided that the following conditions are 10 | // met: 11 | // * Redistributions of source code must retain the above copyright 12 | // notice, this list of conditions and the following disclaimer. 13 | // * Redistributions in binary form must reproduce the above 14 | // copyright notice, this list of conditions and the following disclaimer 15 | // in the documentation and/or other materials provided with the 16 | // distribution. 17 | // 18 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 | // 30 | /////////////////////////////////////////////////////////////////////////// 31 | 32 | // ------------------------------------------------------------------------ 33 | // 34 | // pngquant Photoshop plug-in 35 | // 36 | // by Kornel Lesinski 37 | // based on code by Brendan Bolles 38 | // 39 | // ------------------------------------------------------------------------ 40 | 41 | //------------------------------------------------------------------------------- 42 | // Definitions -- Required by include files. 43 | //------------------------------------------------------------------------------- 44 | 45 | #include "pngquant_version.h" 46 | 47 | #define plugInName "pngquant" 48 | #define plugInCopyrightYear pngquant_Copyright_Year 49 | #define plugInDescription pngquant_Description 50 | #define VersionString pngquant_Version_String 51 | #define ReleaseString pngquant_Build_Date_Manual 52 | #define CurrentYear pngquant_Build_Year 53 | 54 | //------------------------------------------------------------------------------- 55 | // Definitions -- Required by other resources in this rez file. 56 | //------------------------------------------------------------------------------- 57 | 58 | // Dictionary (aete) resources: 59 | 60 | #define plugInAETEComment pngquant_Description 61 | #define vendorName "pngquant.org" 62 | 63 | #define plugInSuiteID 'sdK4' 64 | #define plugInClassID 'pngq' 65 | #define plugInEventID typeNull // must be this 66 | 67 | //------------------------------------------------------------------------------- 68 | // Set up included files for Macintosh and Windows. 69 | //------------------------------------------------------------------------------- 70 | 71 | #include "PIDefines.h" 72 | 73 | #ifdef __PIMac__ 74 | // #include "SysTypes.r" 75 | #include "PIGeneral.r" 76 | //#include "PIUtilities.r" 77 | //#include "DialogUtilities.r" 78 | #elif defined(__PIWin__) 79 | #include "PIGeneral.h" 80 | //#include "PIUtilities.r" 81 | //#include "WinDialogUtils.r" 82 | #endif 83 | 84 | #ifndef ResourceID 85 | #define ResourceID 16000 86 | #endif 87 | 88 | #include "PITerminology.h" 89 | #include "PIActions.h" 90 | 91 | #include "pngquant_Terminology.h" 92 | 93 | //------------------------------------------------------------------------------- 94 | // PiPL resource 95 | //------------------------------------------------------------------------------- 96 | 97 | resource 'PiPL' (ResourceID, plugInName "PiPL", purgeable) 98 | { 99 | { 100 | Kind { ImageFormat }, 101 | Name { "PNG for Web (pngquant)" }, 102 | 103 | //Category { "pngquant" }, 104 | //Priority { 1 }, // Can use this to override a built-in Photoshop plug-in 105 | 106 | Version { (latestFormatVersion << 16) | latestFormatSubVersion }, 107 | 108 | #ifdef __PIMac__ 109 | #ifdef BUILDING_FOR_MACH 110 | #if (defined(__x86_64__)) 111 | CodeMacIntel64 { "PluginMain" }, 112 | #endif 113 | #if (defined(__i386__)) 114 | CodeMacIntel32 { "PluginMain" }, 115 | #endif 116 | #endif 117 | #else 118 | #if defined(_WIN64) 119 | CodeWin64X86 { "PluginMain" }, 120 | #else 121 | CodeWin32X86 { "PluginMain" }, 122 | #endif 123 | #endif 124 | 125 | // ClassID, eventID, aete ID, uniqueString: 126 | HasTerminology { plugInClassID, plugInEventID, ResourceID, vendorName " " plugInName }, 127 | 128 | SupportedModes 129 | { 130 | noBitmap, noGrayScale, 131 | noIndexedColor, doesSupportRGBColor, 132 | noCMYKColor, noHSLColor, 133 | noHSBColor, noMultichannel, 134 | noDuotone, noLABColor 135 | }, 136 | 137 | EnableInfo { "in (PSHOP_ImageMode, RGBMode)" }, 138 | 139 | FmtFileType { 'PNGf', '8BIM' }, 140 | WriteExtensions { { 'PNG ' } }, 141 | FilteredExtensions { { 'PNG ' } }, 142 | FormatFlags { fmtSavesImageResources, //(by saying we do, PS won't store them, thereby avoiding problems) 143 | fmtCannotRead, 144 | fmtCanWrite, 145 | fmtCanWriteIfRead, 146 | fmtCanWriteTransparency, 147 | fmtCannotCreateThumbnail }, 148 | PlugInMaxSize { 16384, 16384 }, 149 | FormatMaxSize { { 16384, 16384 } }, 150 | FormatMaxChannels { { 0, 0, 0, 5, 0, 0, 151 | 0, 0, 0, 0, 0, 0 } }, 152 | FormatICCFlags { iccCannotEmbedGray, 153 | iccCannotEmbedIndexed, 154 | iccCannotEmbedRGB, 155 | iccCannotEmbedCMYK }, 156 | XMPWrite { }, 157 | XMPRead { } 158 | }, 159 | }; 160 | 161 | 162 | //------------------------------------------------------------------------------- 163 | // PiMI resource (kept for backward compatibility) 164 | //------------------------------------------------------------------------------- 165 | 166 | resource 'PiMI' (ResourceID, plugInName " PiMI", purgeable) 167 | { 168 | latestFormatVersion, /* Version, subVersion, and priority of the interface */ 169 | latestFormatSubVersion, 170 | 0, 171 | 172 | supportsGrayScale + 173 | supportsRGBColor, /* Supported Image Modes */ 174 | ' ', /* Required host */ 175 | 176 | { 177 | cannotRead, 178 | cannotReadAll, 179 | canWrite, 180 | canWriteIfRead, 181 | savesResources, 182 | { 0, 0, 0, 5, /* Maximum # of channels for each plug-in mode */ 183 | 0, 0, 0, 0, 184 | 0, 0, 0, 0, 185 | 0, 0, 0, 0 }, 186 | 32767, /* Maximum rows allowed in document */ 187 | 32767, /* Maximum columns allowed in document */ 188 | 'PNGf', /* The file type if we create a file. */ 189 | '8BIM', /* The creator type if we create a file. */ 190 | { /* The type-creator pairs supported. */ 191 | '8B1F', ' ' 192 | }, 193 | { /* The extensions supported. */ 194 | } 195 | }, 196 | 197 | }; 198 | 199 | //------------------------------------------------------------------------------- 200 | // Dictionary (scripting) resource 201 | //------------------------------------------------------------------------------- 202 | 203 | resource 'aete' (ResourceID, plugInName " dictionary", purgeable) 204 | { 205 | 1, 0, english, roman, /* aete version and language specifiers */ 206 | { 207 | vendorName, /* vendor suite name */ 208 | "Lossy PNG opd", /* optional description */ 209 | plugInSuiteID, /* suite ID */ 210 | 1, /* suite code, must be 1 */ 211 | 1, /* suite level, must be 1 */ 212 | {}, /* structure for filters */ 213 | { /* non-filter plug-in class here */ 214 | "pngquant cl", /* unique class name */ 215 | plugInClassID, /* class ID, must be unique or Suite ID */ 216 | plugInAETEComment, /* optional description */ 217 | { /* define inheritance */ 218 | "$$$/private/AETE/Inheritance=", /* must be exactly this */ 219 | keyInherits, /* must be keyInherits */ 220 | classFormat, /* parent: Format, Import, Export */ 221 | "parent class format", /* optional description */ 222 | flagsSingleProperty, /* if properties, list below */ 223 | 224 | "Quality", 225 | keypngquantquality, 226 | typeInteger, 227 | "pngquant compression quality", 228 | flagsSingleProperty, 229 | 230 | "Save Metadata", 231 | keypngquantsaveMetadata, 232 | typeBoolean, 233 | "Save ICC profile, EXIF, and XMP", 234 | flagsSingleProperty 235 | }, 236 | {}, /* elements (not supported) */ 237 | /* class descriptions */ 238 | }, 239 | {}, /* comparison ops (not supported) */ 240 | { /* any enumerations */ 241 | } 242 | } 243 | }; 244 | 245 | #ifdef __PIMac__ 246 | 247 | //------------------------------------------------------------------------------- 248 | // Version 'vers' resources. 249 | //------------------------------------------------------------------------------- 250 | 251 | resource 'vers' (1, plugInName " Version", purgeable) 252 | { 253 | 5, 0x50, final, 0, verUs, 254 | VersionString, 255 | VersionString " ©" plugInCopyrightYear " Kornel Lesinski, fnord" 256 | }; 257 | 258 | resource 'vers' (2, plugInName " Version", purgeable) 259 | { 260 | 5, 0x50, final, 0, verUs, 261 | VersionString, 262 | "by Brendan Bolles" 263 | }; 264 | 265 | 266 | #endif // __PIMac__ 267 | 268 | 269 | -------------------------------------------------------------------------------- /src/photoshop/pngquant_Scripting.cpp: -------------------------------------------------------------------------------- 1 | /////////////////////////////////////////////////////////////////////////// 2 | // 3 | // Copyright (c) 2013, Brendan Bolles 4 | // 5 | // All rights reserved. 6 | // 7 | // Redistribution and use in source and binary forms, with or without 8 | // modification, are permitted provided that the following conditions are 9 | // met: 10 | // * Redistributions of source code must retain the above copyright 11 | // notice, this list of conditions and the following disclaimer. 12 | // * Redistributions in binary form must reproduce the above 13 | // copyright notice, this list of conditions and the following disclaimer 14 | // in the documentation and/or other materials provided with the 15 | // distribution. 16 | // 17 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 | // 29 | /////////////////////////////////////////////////////////////////////////// 30 | 31 | // ------------------------------------------------------------------------ 32 | // 33 | // pngquant Photoshop plug-in 34 | // 35 | // by Kornel Lesinski 36 | // based on code by Brendan Bolles 37 | // 38 | // ------------------------------------------------------------------------ 39 | 40 | #include "PIDefines.h" 41 | #include "pngquant.h" 42 | 43 | #include "pngquant_Terminology.h" 44 | 45 | 46 | Boolean ReadScriptParamsOnWrite(GPtr globals) 47 | { 48 | PIReadDescriptor token = NULL; 49 | DescriptorKeyID key = 0; 50 | DescriptorTypeID type = 0; 51 | DescriptorKeyIDArray array = { NULLID }; 52 | int32 flags = 0; 53 | OSErr stickyError = noErr; 54 | Boolean returnValue = true; 55 | int32 storeValue; 56 | Boolean boolStoreValue; 57 | 58 | if (DescriptorAvailable(NULL)) 59 | { 60 | token = OpenReader(array); 61 | if (token) 62 | { 63 | while (PIGetKey(token, &key, &type, &flags)) 64 | { 65 | switch (key) 66 | { 67 | case keypngquantquality: 68 | PIGetInt(token, &storeValue); 69 | gOptions.quality = storeValue; 70 | break; 71 | 72 | case keypngquantsaveMetadata: 73 | PIGetBool(token, &boolStoreValue); 74 | gOptions.save_metadata = boolStoreValue; 75 | break; 76 | } 77 | } 78 | 79 | stickyError = CloseReader(&token); // closes & disposes. 80 | 81 | if (stickyError) 82 | { 83 | if (stickyError == errMissingParameter) // missedParamErr == -1715 84 | ; 85 | /* (descriptorKeyIDArray != NULL) 86 | missing parameter somewhere. Walk IDarray to find which one. */ 87 | else 88 | gResult = stickyError; 89 | } 90 | } 91 | 92 | returnValue = PlayDialog(); 93 | // return TRUE if want to show our Dialog 94 | } 95 | 96 | return returnValue; 97 | } 98 | 99 | 100 | 101 | OSErr WriteScriptParamsOnWrite(GPtr globals) 102 | { 103 | PIWriteDescriptor token = nil; 104 | OSErr gotErr = noErr; 105 | 106 | if (DescriptorAvailable(NULL)) 107 | { 108 | token = OpenWriter(); 109 | if (token) 110 | { 111 | PIPutBool(token, keypngquantsaveMetadata, gOptions.save_metadata); 112 | 113 | gotErr = CloseWriter(&token); /* closes and sets dialog optional */ 114 | /* done. Now pass handle on to Photoshop */ 115 | } 116 | } 117 | return gotErr; 118 | } 119 | 120 | 121 | -------------------------------------------------------------------------------- /src/photoshop/pngquant_Terminology.h: -------------------------------------------------------------------------------- 1 | /////////////////////////////////////////////////////////////////////////// 2 | // 3 | // Copyright (c) 2013, Brendan Bolles 4 | // 5 | // All rights reserved. 6 | // 7 | // Redistribution and use in source and binary forms, with or without 8 | // modification, are permitted provided that the following conditions are 9 | // met: 10 | // * Redistributions of source code must retain the above copyright 11 | // notice, this list of conditions and the following disclaimer. 12 | // * Redistributions in binary form must reproduce the above 13 | // copyright notice, this list of conditions and the following disclaimer 14 | // in the documentation and/or other materials provided with the 15 | // distribution. 16 | // 17 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 | // 29 | /////////////////////////////////////////////////////////////////////////// 30 | 31 | // ------------------------------------------------------------------------ 32 | // 33 | // pngquant Photoshop plug-in 34 | // 35 | // by Kornel Lesinski 36 | // based on code by Brendan Bolles 37 | // 38 | // ------------------------------------------------------------------------ 39 | 40 | #ifndef __pngquant_Terminology_H__ 41 | #define __pngquant_Terminology_H__ 42 | 43 | //------------------------------------------------------------------------------- 44 | // Options 45 | //------------------------------------------------------------------------------- 46 | 47 | //------------------------------------------------------------------------------- 48 | // Definitions -- Scripting keys 49 | //------------------------------------------------------------------------------- 50 | 51 | #define keypngquantquality 'pgQq' 52 | #define keypngquantsaveMetadata 'pgQm' 53 | 54 | 55 | #endif // __pngquant_Terminology_H__ 56 | -------------------------------------------------------------------------------- /src/photoshop/pngquant_UI.h: -------------------------------------------------------------------------------- 1 | /////////////////////////////////////////////////////////////////////////// 2 | // 3 | // Copyright (c) 2013, Brendan Bolles 4 | // 5 | // All rights reserved. 6 | // 7 | // Redistribution and use in source and binary forms, with or without 8 | // modification, are permitted provided that the following conditions are 9 | // met: 10 | // * Redistributions of source code must retain the above copyright 11 | // notice, this list of conditions and the following disclaimer. 12 | // * Redistributions in binary form must reproduce the above 13 | // copyright notice, this list of conditions and the following disclaimer 14 | // in the documentation and/or other materials provided with the 15 | // distribution. 16 | // 17 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 | // 29 | /////////////////////////////////////////////////////////////////////////// 30 | 31 | // ------------------------------------------------------------------------ 32 | // 33 | // pngquant Photoshop plug-in 34 | // 35 | // by Kornel Lesinski 36 | // based on code by Brendan Bolles 37 | // 38 | // ------------------------------------------------------------------------ 39 | 40 | #ifndef pngquant_UI_H 41 | #define pngquant_UI_H 42 | 43 | typedef struct { 44 | int quality; 45 | bool save_metadata; 46 | } pngquant_OutUI_Data; 47 | 48 | // pngquant UI 49 | // 50 | // return true if user hit OK 51 | // if user hit OK, params block will have been modified 52 | // 53 | // plugHndl is bundle identifier string on Mac, hInstance on win 54 | // mwnd is the main window for Windows 55 | 56 | 57 | bool 58 | pngquant_OutUI( 59 | pngquant_OutUI_Data *params, 60 | bool have_transparency, 61 | const char *alpha_name, 62 | const void *plugHndl, 63 | const void *mwnd); 64 | 65 | void 66 | pngquant_About( 67 | const char *pngquant_version_string, 68 | const void *plugHndl, 69 | const void *mwnd); 70 | 71 | void MyLog(const char *str); 72 | 73 | // Mac prefs keys 74 | #define pngquant_PREFS_ID "org.pngquant.photoshop" 75 | #define pngquant_PREFS_AUTO "Auto" 76 | 77 | 78 | // Windows registry keys 79 | #define pngquant_PREFIX "Software\\pngquant\\photoshopplugin" 80 | #define pngquant_ALPHA_KEY "Alpha" 81 | #define pngquant_MULT_KEY "Mult" 82 | #define pngquant_AUTO_KEY "Auto" 83 | 84 | 85 | #endif // pngquant_UI_H 86 | -------------------------------------------------------------------------------- /src/photoshop/pngquant_version.h: -------------------------------------------------------------------------------- 1 | /////////////////////////////////////////////////////////////////////////// 2 | // 3 | // Copyright (c) 2013, Brendan Bolles 4 | // 5 | // All rights reserved. 6 | // 7 | // Redistribution and use in source and binary forms, with or without 8 | // modification, are permitted provided that the following conditions are 9 | // met: 10 | // * Redistributions of source code must retain the above copyright 11 | // notice, this list of conditions and the following disclaimer. 12 | // * Redistributions in binary form must reproduce the above 13 | // copyright notice, this list of conditions and the following disclaimer 14 | // in the documentation and/or other materials provided with the 15 | // distribution. 16 | // 17 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 | // 29 | /////////////////////////////////////////////////////////////////////////// 30 | 31 | // ------------------------------------------------------------------------ 32 | // 33 | // pngquant Photoshop plug-in 34 | // 35 | // by Kornel Lesinski 36 | // based on code by Brendan Bolles 37 | // 38 | // ------------------------------------------------------------------------ 39 | 40 | #ifndef __pngquant_Version_H__ 41 | #define __pngquant_Version_H__ 42 | 43 | #define pngquant_Major_Version 0 44 | #define pngquant_Minor_Version 1 45 | #define pngquant_Version_String "0.2b" 46 | #define pngquant_Build_Date __DATE__ 47 | #define pngquant_Build_Date_Manual "6 Jan 2014" 48 | #define pngquant_Copyright_Year "2014" 49 | #define pngquant_Build_Year pngquant_Copyright_Year 50 | 51 | #define pngquant_Description "Smaller PNG files with alpha channel." 52 | 53 | #endif // __pngquant_Version_H__ 54 | -------------------------------------------------------------------------------- /xcode/xcode3/English.lproj/InfoPlist.strings: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/kornelski/pngquant-photoshop/7128903b3a005767ddd089460a9b7dde030827c7/xcode/xcode3/English.lproj/InfoPlist.strings -------------------------------------------------------------------------------- /xcode/xcode3/lodepng.h: -------------------------------------------------------------------------------- 1 | /* 2 | LodePNG version 20131222 3 | 4 | Copyright (c) 2005-2013 Lode Vandevenne 5 | 6 | This software is provided 'as-is', without any express or implied 7 | warranty. In no event will the authors be held liable for any damages 8 | arising from the use of this software. 9 | 10 | Permission is granted to anyone to use this software for any purpose, 11 | including commercial applications, and to alter it and redistribute it 12 | freely, subject to the following restrictions: 13 | 14 | 1. The origin of this software must not be misrepresented; you must not 15 | claim that you wrote the original software. If you use this software 16 | in a product, an acknowledgment in the product documentation would be 17 | appreciated but is not required. 18 | 19 | 2. Altered source versions must be plainly marked as such, and must not be 20 | misrepresented as being the original software. 21 | 22 | 3. This notice may not be removed or altered from any source 23 | distribution. 24 | */ 25 | 26 | #ifndef LODEPNG_H 27 | #define LODEPNG_H 28 | 29 | #include /*for size_t*/ 30 | 31 | #ifdef __cplusplus 32 | #include 33 | #include 34 | #endif /*__cplusplus*/ 35 | 36 | /* 37 | The following #defines are used to create code sections. They can be disabled 38 | to disable code sections, which can give faster compile time and smaller binary. 39 | The "NO_COMPILE" defines are designed to be used to pass as defines to the 40 | compiler command to disable them without modifying this header, e.g. 41 | -DLODEPNG_NO_COMPILE_ZLIB for gcc. 42 | */ 43 | /*deflate & zlib. If disabled, you must specify alternative zlib functions in 44 | the custom_zlib field of the compress and decompress settings*/ 45 | #ifndef LODEPNG_NO_COMPILE_ZLIB 46 | #define LODEPNG_COMPILE_ZLIB 47 | #endif 48 | /*png encoder and png decoder*/ 49 | #ifndef LODEPNG_NO_COMPILE_PNG 50 | #define LODEPNG_COMPILE_PNG 51 | #endif 52 | /*deflate&zlib decoder and png decoder*/ 53 | #ifndef LODEPNG_NO_COMPILE_DECODER 54 | #define LODEPNG_COMPILE_DECODER 55 | #endif 56 | /*deflate&zlib encoder and png encoder*/ 57 | #ifndef LODEPNG_NO_COMPILE_ENCODER 58 | #define LODEPNG_COMPILE_ENCODER 59 | #endif 60 | /*the optional built in harddisk file loading and saving functions*/ 61 | #ifndef LODEPNG_NO_COMPILE_DISK 62 | #define LODEPNG_COMPILE_DISK 63 | #endif 64 | /*support for chunks other than IHDR, IDAT, PLTE, tRNS, IEND: ancillary and unknown chunks*/ 65 | #ifndef LODEPNG_NO_COMPILE_ANCILLARY_CHUNKS 66 | #define LODEPNG_COMPILE_ANCILLARY_CHUNKS 67 | #endif 68 | /*ability to convert error numerical codes to English text string*/ 69 | #ifndef LODEPNG_NO_COMPILE_ERROR_TEXT 70 | #define LODEPNG_COMPILE_ERROR_TEXT 71 | #endif 72 | /*Compile the default allocators (C's free, malloc and realloc). If you disable this, 73 | you can define the functions lodepng_free, lodepng_malloc and lodepng_realloc in your 74 | source files with custom allocators.*/ 75 | #ifndef LODEPNG_NO_COMPILE_ALLOCATORS 76 | #define LODEPNG_COMPILE_ALLOCATORS 77 | #endif 78 | /*compile the C++ version (you can disable the C++ wrapper here even when compiling for C++)*/ 79 | #ifdef __cplusplus 80 | #ifndef LODEPNG_NO_COMPILE_CPP 81 | #define LODEPNG_COMPILE_CPP 82 | #endif 83 | #endif 84 | 85 | #ifdef LODEPNG_COMPILE_PNG 86 | /*The PNG color types (also used for raw).*/ 87 | typedef enum LodePNGColorType 88 | { 89 | LCT_GREY = 0, /*greyscale: 1,2,4,8,16 bit*/ 90 | LCT_RGB = 2, /*RGB: 8,16 bit*/ 91 | LCT_PALETTE = 3, /*palette: 1,2,4,8 bit*/ 92 | LCT_GREY_ALPHA = 4, /*greyscale with alpha: 8,16 bit*/ 93 | LCT_RGBA = 6 /*RGB with alpha: 8,16 bit*/ 94 | } LodePNGColorType; 95 | 96 | #ifdef LODEPNG_COMPILE_DECODER 97 | /* 98 | Converts PNG data in memory to raw pixel data. 99 | out: Output parameter. Pointer to buffer that will contain the raw pixel data. 100 | After decoding, its size is w * h * (bytes per pixel) bytes larger than 101 | initially. Bytes per pixel depends on colortype and bitdepth. 102 | Must be freed after usage with free(*out). 103 | Note: for 16-bit per channel colors, uses big endian format like PNG does. 104 | w: Output parameter. Pointer to width of pixel data. 105 | h: Output parameter. Pointer to height of pixel data. 106 | in: Memory buffer with the PNG file. 107 | insize: size of the in buffer. 108 | colortype: the desired color type for the raw output image. See explanation on PNG color types. 109 | bitdepth: the desired bit depth for the raw output image. See explanation on PNG color types. 110 | Return value: LodePNG error code (0 means no error). 111 | */ 112 | unsigned lodepng_decode_memory(unsigned char** out, unsigned* w, unsigned* h, 113 | const unsigned char* in, size_t insize, 114 | LodePNGColorType colortype, unsigned bitdepth); 115 | 116 | /*Same as lodepng_decode_memory, but always decodes to 32-bit RGBA raw image*/ 117 | unsigned lodepng_decode32(unsigned char** out, unsigned* w, unsigned* h, 118 | const unsigned char* in, size_t insize); 119 | 120 | /*Same as lodepng_decode_memory, but always decodes to 24-bit RGB raw image*/ 121 | unsigned lodepng_decode24(unsigned char** out, unsigned* w, unsigned* h, 122 | const unsigned char* in, size_t insize); 123 | 124 | #ifdef LODEPNG_COMPILE_DISK 125 | /* 126 | Load PNG from disk, from file with given name. 127 | Same as the other decode functions, but instead takes a filename as input. 128 | */ 129 | unsigned lodepng_decode_file(unsigned char** out, unsigned* w, unsigned* h, 130 | const char* filename, 131 | LodePNGColorType colortype, unsigned bitdepth); 132 | 133 | /*Same as lodepng_decode_file, but always decodes to 32-bit RGBA raw image.*/ 134 | unsigned lodepng_decode32_file(unsigned char** out, unsigned* w, unsigned* h, 135 | const char* filename); 136 | 137 | /*Same as lodepng_decode_file, but always decodes to 24-bit RGB raw image.*/ 138 | unsigned lodepng_decode24_file(unsigned char** out, unsigned* w, unsigned* h, 139 | const char* filename); 140 | #endif /*LODEPNG_COMPILE_DISK*/ 141 | #endif /*LODEPNG_COMPILE_DECODER*/ 142 | 143 | 144 | #ifdef LODEPNG_COMPILE_ENCODER 145 | /* 146 | Converts raw pixel data into a PNG image in memory. The colortype and bitdepth 147 | of the output PNG image cannot be chosen, they are automatically determined 148 | by the colortype, bitdepth and content of the input pixel data. 149 | Note: for 16-bit per channel colors, needs big endian format like PNG does. 150 | out: Output parameter. Pointer to buffer that will contain the PNG image data. 151 | Must be freed after usage with free(*out). 152 | outsize: Output parameter. Pointer to the size in bytes of the out buffer. 153 | image: The raw pixel data to encode. The size of this buffer should be 154 | w * h * (bytes per pixel), bytes per pixel depends on colortype and bitdepth. 155 | w: width of the raw pixel data in pixels. 156 | h: height of the raw pixel data in pixels. 157 | colortype: the color type of the raw input image. See explanation on PNG color types. 158 | bitdepth: the bit depth of the raw input image. See explanation on PNG color types. 159 | Return value: LodePNG error code (0 means no error). 160 | */ 161 | unsigned lodepng_encode_memory(unsigned char** out, size_t* outsize, 162 | const unsigned char* image, unsigned w, unsigned h, 163 | LodePNGColorType colortype, unsigned bitdepth); 164 | 165 | /*Same as lodepng_encode_memory, but always encodes from 32-bit RGBA raw image.*/ 166 | unsigned lodepng_encode32(unsigned char** out, size_t* outsize, 167 | const unsigned char* image, unsigned w, unsigned h); 168 | 169 | /*Same as lodepng_encode_memory, but always encodes from 24-bit RGB raw image.*/ 170 | unsigned lodepng_encode24(unsigned char** out, size_t* outsize, 171 | const unsigned char* image, unsigned w, unsigned h); 172 | 173 | #ifdef LODEPNG_COMPILE_DISK 174 | /* 175 | Converts raw pixel data into a PNG file on disk. 176 | Same as the other encode functions, but instead takes a filename as output. 177 | NOTE: This overwrites existing files without warning! 178 | */ 179 | unsigned lodepng_encode_file(const char* filename, 180 | const unsigned char* image, unsigned w, unsigned h, 181 | LodePNGColorType colortype, unsigned bitdepth); 182 | 183 | /*Same as lodepng_encode_file, but always encodes from 32-bit RGBA raw image.*/ 184 | unsigned lodepng_encode32_file(const char* filename, 185 | const unsigned char* image, unsigned w, unsigned h); 186 | 187 | /*Same as lodepng_encode_file, but always encodes from 24-bit RGB raw image.*/ 188 | unsigned lodepng_encode24_file(const char* filename, 189 | const unsigned char* image, unsigned w, unsigned h); 190 | #endif /*LODEPNG_COMPILE_DISK*/ 191 | #endif /*LODEPNG_COMPILE_ENCODER*/ 192 | 193 | 194 | #ifdef LODEPNG_COMPILE_CPP 195 | namespace lodepng 196 | { 197 | #ifdef LODEPNG_COMPILE_DECODER 198 | /*Same as lodepng_decode_memory, but decodes to an std::vector.*/ 199 | unsigned decode(std::vector& out, unsigned& w, unsigned& h, 200 | const unsigned char* in, size_t insize, 201 | LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); 202 | unsigned decode(std::vector& out, unsigned& w, unsigned& h, 203 | const std::vector& in, 204 | LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); 205 | #ifdef LODEPNG_COMPILE_DISK 206 | /* 207 | Converts PNG file from disk to raw pixel data in memory. 208 | Same as the other decode functions, but instead takes a filename as input. 209 | */ 210 | unsigned decode(std::vector& out, unsigned& w, unsigned& h, 211 | const std::string& filename, 212 | LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); 213 | #endif //LODEPNG_COMPILE_DISK 214 | #endif //LODEPNG_COMPILE_DECODER 215 | 216 | #ifdef LODEPNG_COMPILE_ENCODER 217 | /*Same as lodepng_encode_memory, but encodes to an std::vector.*/ 218 | unsigned encode(std::vector& out, 219 | const unsigned char* in, unsigned w, unsigned h, 220 | LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); 221 | unsigned encode(std::vector& out, 222 | const std::vector& in, unsigned w, unsigned h, 223 | LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); 224 | #ifdef LODEPNG_COMPILE_DISK 225 | /* 226 | Converts 32-bit RGBA raw pixel data into a PNG file on disk. 227 | Same as the other encode functions, but instead takes a filename as output. 228 | NOTE: This overwrites existing files without warning! 229 | */ 230 | unsigned encode(const std::string& filename, 231 | const unsigned char* in, unsigned w, unsigned h, 232 | LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); 233 | unsigned encode(const std::string& filename, 234 | const std::vector& in, unsigned w, unsigned h, 235 | LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8); 236 | #endif //LODEPNG_COMPILE_DISK 237 | #endif //LODEPNG_COMPILE_ENCODER 238 | } //namespace lodepng 239 | #endif /*LODEPNG_COMPILE_CPP*/ 240 | #endif /*LODEPNG_COMPILE_PNG*/ 241 | 242 | #ifdef LODEPNG_COMPILE_ERROR_TEXT 243 | /*Returns an English description of the numerical error code.*/ 244 | const char* lodepng_error_text(unsigned code); 245 | #endif /*LODEPNG_COMPILE_ERROR_TEXT*/ 246 | 247 | #ifdef LODEPNG_COMPILE_DECODER 248 | /*Settings for zlib decompression*/ 249 | typedef struct LodePNGDecompressSettings LodePNGDecompressSettings; 250 | struct LodePNGDecompressSettings 251 | { 252 | unsigned ignore_adler32; /*if 1, continue and don't give an error message if the Adler32 checksum is corrupted*/ 253 | 254 | /*use custom zlib decoder instead of built in one (default: null)*/ 255 | unsigned (*custom_zlib)(unsigned char**, size_t*, 256 | const unsigned char*, size_t, 257 | const LodePNGDecompressSettings*); 258 | /*use custom deflate decoder instead of built in one (default: null) 259 | if custom_zlib is used, custom_deflate is ignored since only the built in 260 | zlib function will call custom_deflate*/ 261 | unsigned (*custom_inflate)(unsigned char**, size_t*, 262 | const unsigned char*, size_t, 263 | const LodePNGDecompressSettings*); 264 | 265 | const void* custom_context; /*optional custom settings for custom functions*/ 266 | }; 267 | 268 | extern const LodePNGDecompressSettings lodepng_default_decompress_settings; 269 | void lodepng_decompress_settings_init(LodePNGDecompressSettings* settings); 270 | #endif /*LODEPNG_COMPILE_DECODER*/ 271 | 272 | #ifdef LODEPNG_COMPILE_ENCODER 273 | /* 274 | Settings for zlib compression. Tweaking these settings tweaks the balance 275 | between speed and compression ratio. 276 | */ 277 | typedef struct LodePNGCompressSettings LodePNGCompressSettings; 278 | struct LodePNGCompressSettings /*deflate = compress*/ 279 | { 280 | /*LZ77 related settings*/ 281 | unsigned btype; /*the block type for LZ (0, 1, 2 or 3, see zlib standard). Should be 2 for proper compression.*/ 282 | unsigned use_lz77; /*whether or not to use LZ77. Should be 1 for proper compression.*/ 283 | unsigned windowsize; /*must be a power of two <= 32768. higher compresses more but is slower. Typical value: 2048.*/ 284 | unsigned minmatch; /*mininum lz77 length. 3 is normally best, 6 can be better for some PNGs. Default: 0*/ 285 | unsigned nicematch; /*stop searching if >= this length found. Set to 258 for best compression. Default: 128*/ 286 | unsigned lazymatching; /*use lazy matching: better compression but a bit slower. Default: true*/ 287 | 288 | /*use custom zlib encoder instead of built in one (default: null)*/ 289 | unsigned (*custom_zlib)(unsigned char**, size_t*, 290 | const unsigned char*, size_t, 291 | const LodePNGCompressSettings*); 292 | /*use custom deflate encoder instead of built in one (default: null) 293 | if custom_zlib is used, custom_deflate is ignored since only the built in 294 | zlib function will call custom_deflate*/ 295 | unsigned (*custom_deflate)(unsigned char**, size_t*, 296 | const unsigned char*, size_t, 297 | const LodePNGCompressSettings*); 298 | 299 | const void* custom_context; /*optional custom settings for custom functions*/ 300 | }; 301 | 302 | extern const LodePNGCompressSettings lodepng_default_compress_settings; 303 | void lodepng_compress_settings_init(LodePNGCompressSettings* settings); 304 | #endif /*LODEPNG_COMPILE_ENCODER*/ 305 | 306 | #ifdef LODEPNG_COMPILE_PNG 307 | /* 308 | Color mode of an image. Contains all information required to decode the pixel 309 | bits to RGBA colors. This information is the same as used in the PNG file 310 | format, and is used both for PNG and raw image data in LodePNG. 311 | */ 312 | typedef struct LodePNGColorMode 313 | { 314 | /*header (IHDR)*/ 315 | LodePNGColorType colortype; /*color type, see PNG standard or documentation further in this header file*/ 316 | unsigned bitdepth; /*bits per sample, see PNG standard or documentation further in this header file*/ 317 | 318 | /* 319 | palette (PLTE and tRNS) 320 | 321 | Dynamically allocated with the colors of the palette, including alpha. 322 | When encoding a PNG, to store your colors in the palette of the LodePNGColorMode, first use 323 | lodepng_palette_clear, then for each color use lodepng_palette_add. 324 | If you encode an image without alpha with palette, don't forget to put value 255 in each A byte of the palette. 325 | 326 | When decoding, by default you can ignore this palette, since LodePNG already 327 | fills the palette colors in the pixels of the raw RGBA output. 328 | 329 | The palette is only supported for color type 3. 330 | */ 331 | unsigned char* palette; /*palette in RGBARGBA... order. When allocated, must be either 0, or have size 1024*/ 332 | size_t palettesize; /*palette size in number of colors (amount of bytes is 4 * palettesize)*/ 333 | 334 | /* 335 | transparent color key (tRNS) 336 | 337 | This color uses the same bit depth as the bitdepth value in this struct, which can be 1-bit to 16-bit. 338 | For greyscale PNGs, r, g and b will all 3 be set to the same. 339 | 340 | When decoding, by default you can ignore this information, since LodePNG sets 341 | pixels with this key to transparent already in the raw RGBA output. 342 | 343 | The color key is only supported for color types 0 and 2. 344 | */ 345 | unsigned key_defined; /*is a transparent color key given? 0 = false, 1 = true*/ 346 | unsigned key_r; /*red/greyscale component of color key*/ 347 | unsigned key_g; /*green component of color key*/ 348 | unsigned key_b; /*blue component of color key*/ 349 | } LodePNGColorMode; 350 | 351 | /*init, cleanup and copy functions to use with this struct*/ 352 | void lodepng_color_mode_init(LodePNGColorMode* info); 353 | void lodepng_color_mode_cleanup(LodePNGColorMode* info); 354 | /*return value is error code (0 means no error)*/ 355 | unsigned lodepng_color_mode_copy(LodePNGColorMode* dest, const LodePNGColorMode* source); 356 | 357 | void lodepng_palette_clear(LodePNGColorMode* info); 358 | /*add 1 color to the palette*/ 359 | unsigned lodepng_palette_add(LodePNGColorMode* info, 360 | unsigned char r, unsigned char g, unsigned char b, unsigned char a); 361 | 362 | /*get the total amount of bits per pixel, based on colortype and bitdepth in the struct*/ 363 | unsigned lodepng_get_bpp(const LodePNGColorMode* info); 364 | /*get the amount of color channels used, based on colortype in the struct. 365 | If a palette is used, it counts as 1 channel.*/ 366 | unsigned lodepng_get_channels(const LodePNGColorMode* info); 367 | /*is it a greyscale type? (only colortype 0 or 4)*/ 368 | unsigned lodepng_is_greyscale_type(const LodePNGColorMode* info); 369 | /*has it got an alpha channel? (only colortype 2 or 6)*/ 370 | unsigned lodepng_is_alpha_type(const LodePNGColorMode* info); 371 | /*has it got a palette? (only colortype 3)*/ 372 | unsigned lodepng_is_palette_type(const LodePNGColorMode* info); 373 | /*only returns true if there is a palette and there is a value in the palette with alpha < 255. 374 | Loops through the palette to check this.*/ 375 | unsigned lodepng_has_palette_alpha(const LodePNGColorMode* info); 376 | /* 377 | Check if the given color info indicates the possibility of having non-opaque pixels in the PNG image. 378 | Returns true if the image can have translucent or invisible pixels (it still be opaque if it doesn't use such pixels). 379 | Returns false if the image can only have opaque pixels. 380 | In detail, it returns true only if it's a color type with alpha, or has a palette with non-opaque values, 381 | or if "key_defined" is true. 382 | */ 383 | unsigned lodepng_can_have_alpha(const LodePNGColorMode* info); 384 | /*Returns the byte size of a raw image buffer with given width, height and color mode*/ 385 | size_t lodepng_get_raw_size(unsigned w, unsigned h, const LodePNGColorMode* color); 386 | 387 | #ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS 388 | /*The information of a Time chunk in PNG.*/ 389 | typedef struct LodePNGTime 390 | { 391 | unsigned year; /*2 bytes used (0-65535)*/ 392 | unsigned month; /*1-12*/ 393 | unsigned day; /*1-31*/ 394 | unsigned hour; /*0-23*/ 395 | unsigned minute; /*0-59*/ 396 | unsigned second; /*0-60 (to allow for leap seconds)*/ 397 | } LodePNGTime; 398 | #endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ 399 | 400 | /*Information about the PNG image, except pixels, width and height.*/ 401 | typedef struct LodePNGInfo 402 | { 403 | /*header (IHDR), palette (PLTE) and transparency (tRNS) chunks*/ 404 | unsigned compression_method;/*compression method of the original file. Always 0.*/ 405 | unsigned filter_method; /*filter method of the original file*/ 406 | unsigned interlace_method; /*interlace method of the original file*/ 407 | LodePNGColorMode color; /*color type and bits, palette and transparency of the PNG file*/ 408 | 409 | #ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS 410 | /* 411 | suggested background color chunk (bKGD) 412 | This color uses the same color mode as the PNG (except alpha channel), which can be 1-bit to 16-bit. 413 | 414 | For greyscale PNGs, r, g and b will all 3 be set to the same. When encoding 415 | the encoder writes the red one. For palette PNGs: When decoding, the RGB value 416 | will be stored, not a palette index. But when encoding, specify the index of 417 | the palette in background_r, the other two are then ignored. 418 | 419 | The decoder does not use this background color to edit the color of pixels. 420 | */ 421 | unsigned background_defined; /*is a suggested background color given?*/ 422 | unsigned background_r; /*red component of suggested background color*/ 423 | unsigned background_g; /*green component of suggested background color*/ 424 | unsigned background_b; /*blue component of suggested background color*/ 425 | 426 | /* 427 | non-international text chunks (tEXt and zTXt) 428 | 429 | The char** arrays each contain num strings. The actual messages are in 430 | text_strings, while text_keys are keywords that give a short description what 431 | the actual text represents, e.g. Title, Author, Description, or anything else. 432 | 433 | A keyword is minimum 1 character and maximum 79 characters long. It's 434 | discouraged to use a single line length longer than 79 characters for texts. 435 | 436 | Don't allocate these text buffers yourself. Use the init/cleanup functions 437 | correctly and use lodepng_add_text and lodepng_clear_text. 438 | */ 439 | size_t text_num; /*the amount of texts in these char** buffers (there may be more texts in itext)*/ 440 | char** text_keys; /*the keyword of a text chunk (e.g. "Comment")*/ 441 | char** text_strings; /*the actual text*/ 442 | 443 | /* 444 | international text chunks (iTXt) 445 | Similar to the non-international text chunks, but with additional strings 446 | "langtags" and "transkeys". 447 | */ 448 | size_t itext_num; /*the amount of international texts in this PNG*/ 449 | char** itext_keys; /*the English keyword of the text chunk (e.g. "Comment")*/ 450 | char** itext_langtags; /*language tag for this text's language, ISO/IEC 646 string, e.g. ISO 639 language tag*/ 451 | char** itext_transkeys; /*keyword translated to the international language - UTF-8 string*/ 452 | char** itext_strings; /*the actual international text - UTF-8 string*/ 453 | 454 | /*time chunk (tIME)*/ 455 | unsigned time_defined; /*set to 1 to make the encoder generate a tIME chunk*/ 456 | LodePNGTime time; 457 | 458 | /*phys chunk (pHYs)*/ 459 | unsigned phys_defined; /*if 0, there is no pHYs chunk and the values below are undefined, if 1 else there is one*/ 460 | unsigned phys_x; /*pixels per unit in x direction*/ 461 | unsigned phys_y; /*pixels per unit in y direction*/ 462 | unsigned phys_unit; /*may be 0 (unknown unit) or 1 (metre)*/ 463 | 464 | /* 465 | unknown chunks 466 | There are 3 buffers, one for each position in the PNG where unknown chunks can appear 467 | each buffer contains all unknown chunks for that position consecutively 468 | The 3 buffers are the unknown chunks between certain critical chunks: 469 | 0: IHDR-PLTE, 1: PLTE-IDAT, 2: IDAT-IEND 470 | Do not allocate or traverse this data yourself. Use the chunk traversing functions declared 471 | later, such as lodepng_chunk_next and lodepng_chunk_append, to read/write this struct. 472 | */ 473 | unsigned char* unknown_chunks_data[3]; 474 | size_t unknown_chunks_size[3]; /*size in bytes of the unknown chunks, given for protection*/ 475 | #endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ 476 | } LodePNGInfo; 477 | 478 | /*init, cleanup and copy functions to use with this struct*/ 479 | void lodepng_info_init(LodePNGInfo* info); 480 | void lodepng_info_cleanup(LodePNGInfo* info); 481 | /*return value is error code (0 means no error)*/ 482 | unsigned lodepng_info_copy(LodePNGInfo* dest, const LodePNGInfo* source); 483 | 484 | #ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS 485 | void lodepng_clear_text(LodePNGInfo* info); /*use this to clear the texts again after you filled them in*/ 486 | unsigned lodepng_add_text(LodePNGInfo* info, const char* key, const char* str); /*push back both texts at once*/ 487 | 488 | void lodepng_clear_itext(LodePNGInfo* info); /*use this to clear the itexts again after you filled them in*/ 489 | unsigned lodepng_add_itext(LodePNGInfo* info, const char* key, const char* langtag, 490 | const char* transkey, const char* str); /*push back the 4 texts of 1 chunk at once*/ 491 | #endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ 492 | 493 | /* 494 | Converts raw buffer from one color type to another color type, based on 495 | LodePNGColorMode structs to describe the input and output color type. 496 | See the reference manual at the end of this header file to see which color conversions are supported. 497 | return value = LodePNG error code (0 if all went ok, an error if the conversion isn't supported) 498 | The out buffer must have size (w * h * bpp + 7) / 8, where bpp is the bits per pixel 499 | of the output color type (lodepng_get_bpp) 500 | The fix_png value works as described in struct LodePNGDecoderSettings. 501 | Note: for 16-bit per channel colors, uses big endian format like PNG does. 502 | */ 503 | unsigned lodepng_convert(unsigned char* out, const unsigned char* in, 504 | LodePNGColorMode* mode_out, const LodePNGColorMode* mode_in, 505 | unsigned w, unsigned h, unsigned fix_png); 506 | 507 | #ifdef LODEPNG_COMPILE_DECODER 508 | /* 509 | Settings for the decoder. This contains settings for the PNG and the Zlib 510 | decoder, but not the Info settings from the Info structs. 511 | */ 512 | typedef struct LodePNGDecoderSettings 513 | { 514 | LodePNGDecompressSettings zlibsettings; /*in here is the setting to ignore Adler32 checksums*/ 515 | 516 | unsigned ignore_crc; /*ignore CRC checksums*/ 517 | /* 518 | The fix_png setting, if 1, makes the decoder tolerant towards some PNG images 519 | that do not correctly follow the PNG specification. This only supports errors 520 | that are fixable, were found in images that are actually used on the web, and 521 | are silently tolerated by other decoders as well. Currently only one such fix 522 | is implemented: if a palette index is out of bounds given the palette size, 523 | interpret it as opaque black. 524 | By default this value is 0, which makes it stop with an error on such images. 525 | */ 526 | unsigned fix_png; 527 | unsigned color_convert; /*whether to convert the PNG to the color type you want. Default: yes*/ 528 | 529 | #ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS 530 | unsigned read_text_chunks; /*if false but remember_unknown_chunks is true, they're stored in the unknown chunks*/ 531 | /*store all bytes from unknown chunks in the LodePNGInfo (off by default, useful for a png editor)*/ 532 | unsigned remember_unknown_chunks; 533 | #endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ 534 | } LodePNGDecoderSettings; 535 | 536 | void lodepng_decoder_settings_init(LodePNGDecoderSettings* settings); 537 | #endif /*LODEPNG_COMPILE_DECODER*/ 538 | 539 | #ifdef LODEPNG_COMPILE_ENCODER 540 | /*automatically use color type with less bits per pixel if losslessly possible. Default: AUTO*/ 541 | typedef enum LodePNGFilterStrategy 542 | { 543 | /*every filter at zero*/ 544 | LFS_ZERO, 545 | /*Use filter that gives minumum sum, as described in the official PNG filter heuristic.*/ 546 | LFS_MINSUM, 547 | /*Use the filter type that gives smallest Shannon entropy for this scanline. Depending 548 | on the image, this is better or worse than minsum.*/ 549 | LFS_ENTROPY, 550 | /* 551 | Brute-force-search PNG filters by compressing each filter for each scanline. 552 | Experimental, very slow, and only rarely gives better compression than MINSUM. 553 | */ 554 | LFS_BRUTE_FORCE, 555 | /*use predefined_filters buffer: you specify the filter type for each scanline*/ 556 | LFS_PREDEFINED 557 | } LodePNGFilterStrategy; 558 | 559 | /*automatically use color type with less bits per pixel if losslessly possible. Default: LAC_AUTO*/ 560 | typedef enum LodePNGAutoConvert 561 | { 562 | LAC_NO, /*use color type user requested*/ 563 | LAC_ALPHA, /*use color type user requested, but if only opaque pixels and RGBA or grey+alpha, use RGB or grey*/ 564 | LAC_AUTO, /*use PNG color type that can losslessly represent the uncompressed image the smallest possible*/ 565 | /* 566 | like AUTO, but do not choose 1, 2 or 4 bit per pixel types. 567 | sometimes a PNG image compresses worse if less than 8 bits per pixels. 568 | */ 569 | LAC_AUTO_NO_NIBBLES, 570 | /* 571 | like AUTO, but never choose palette color type. For small images, encoding 572 | the palette may take more bytes than what is gained. Note that AUTO also 573 | already prevents encoding the palette for extremely small images, but that may 574 | not be sufficient because due to the compression it cannot predict when to 575 | switch. 576 | */ 577 | LAC_AUTO_NO_PALETTE, 578 | LAC_AUTO_NO_NIBBLES_NO_PALETTE 579 | } LodePNGAutoConvert; 580 | 581 | 582 | /* 583 | Automatically chooses color type that gives smallest amount of bits in the 584 | output image, e.g. grey if there are only greyscale pixels, palette if there 585 | are less than 256 colors, ... 586 | The auto_convert parameter allows limiting it to not use palette, ... 587 | */ 588 | unsigned lodepng_auto_choose_color(LodePNGColorMode* mode_out, 589 | const unsigned char* image, unsigned w, unsigned h, 590 | const LodePNGColorMode* mode_in, 591 | LodePNGAutoConvert auto_convert); 592 | 593 | /*Settings for the encoder.*/ 594 | typedef struct LodePNGEncoderSettings 595 | { 596 | LodePNGCompressSettings zlibsettings; /*settings for the zlib encoder, such as window size, ...*/ 597 | 598 | LodePNGAutoConvert auto_convert; /*how to automatically choose output PNG color type, if at all*/ 599 | 600 | /*If true, follows the official PNG heuristic: if the PNG uses a palette or lower than 601 | 8 bit depth, set all filters to zero. Otherwise use the filter_strategy. Note that to 602 | completely follow the official PNG heuristic, filter_palette_zero must be true and 603 | filter_strategy must be LFS_MINSUM*/ 604 | unsigned filter_palette_zero; 605 | /*Which filter strategy to use when not using zeroes due to filter_palette_zero. 606 | Set filter_palette_zero to 0 to ensure always using your chosen strategy. Default: LFS_MINSUM*/ 607 | LodePNGFilterStrategy filter_strategy; 608 | /*used if filter_strategy is LFS_PREDEFINED. In that case, this must point to a buffer with 609 | the same length as the amount of scanlines in the image, and each value must <= 5. You 610 | have to cleanup this buffer, LodePNG will never free it. Don't forget that filter_palette_zero 611 | must be set to 0 to ensure this is also used on palette or low bitdepth images.*/ 612 | const unsigned char* predefined_filters; 613 | 614 | /*force creating a PLTE chunk if colortype is 2 or 6 (= a suggested palette). 615 | If colortype is 3, PLTE is _always_ created.*/ 616 | unsigned force_palette; 617 | #ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS 618 | /*add LodePNG identifier and version as a text chunk, for debugging*/ 619 | unsigned add_id; 620 | /*encode text chunks as zTXt chunks instead of tEXt chunks, and use compression in iTXt chunks*/ 621 | unsigned text_compression; 622 | #endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/ 623 | } LodePNGEncoderSettings; 624 | 625 | void lodepng_encoder_settings_init(LodePNGEncoderSettings* settings); 626 | #endif /*LODEPNG_COMPILE_ENCODER*/ 627 | 628 | 629 | #if defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_ENCODER) 630 | /*The settings, state and information for extended encoding and decoding.*/ 631 | typedef struct LodePNGState 632 | { 633 | #ifdef LODEPNG_COMPILE_DECODER 634 | LodePNGDecoderSettings decoder; /*the decoding settings*/ 635 | #endif /*LODEPNG_COMPILE_DECODER*/ 636 | #ifdef LODEPNG_COMPILE_ENCODER 637 | LodePNGEncoderSettings encoder; /*the encoding settings*/ 638 | #endif /*LODEPNG_COMPILE_ENCODER*/ 639 | LodePNGColorMode info_raw; /*specifies the format in which you would like to get the raw pixel buffer*/ 640 | LodePNGInfo info_png; /*info of the PNG image obtained after decoding*/ 641 | unsigned error; 642 | #ifdef LODEPNG_COMPILE_CPP 643 | //For the lodepng::State subclass. 644 | virtual ~LodePNGState(){} 645 | #endif 646 | } LodePNGState; 647 | 648 | /*init, cleanup and copy functions to use with this struct*/ 649 | void lodepng_state_init(LodePNGState* state); 650 | void lodepng_state_cleanup(LodePNGState* state); 651 | void lodepng_state_copy(LodePNGState* dest, const LodePNGState* source); 652 | #endif /* defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_ENCODER) */ 653 | 654 | #ifdef LODEPNG_COMPILE_DECODER 655 | /* 656 | Same as lodepng_decode_memory, but uses a LodePNGState to allow custom settings and 657 | getting much more information about the PNG image and color mode. 658 | */ 659 | unsigned lodepng_decode(unsigned char** out, unsigned* w, unsigned* h, 660 | LodePNGState* state, 661 | const unsigned char* in, size_t insize); 662 | 663 | /* 664 | Read the PNG header, but not the actual data. This returns only the information 665 | that is in the header chunk of the PNG, such as width, height and color type. The 666 | information is placed in the info_png field of the LodePNGState. 667 | */ 668 | unsigned lodepng_inspect(unsigned* w, unsigned* h, 669 | LodePNGState* state, 670 | const unsigned char* in, size_t insize); 671 | #endif /*LODEPNG_COMPILE_DECODER*/ 672 | 673 | 674 | #ifdef LODEPNG_COMPILE_ENCODER 675 | /*This function allocates the out buffer with standard malloc and stores the size in *outsize.*/ 676 | unsigned lodepng_encode(unsigned char** out, size_t* outsize, 677 | const unsigned char* image, unsigned w, unsigned h, 678 | LodePNGState* state); 679 | #endif /*LODEPNG_COMPILE_ENCODER*/ 680 | 681 | /* 682 | The lodepng_chunk functions are normally not needed, except to traverse the 683 | unknown chunks stored in the LodePNGInfo struct, or add new ones to it. 684 | It also allows traversing the chunks of an encoded PNG file yourself. 685 | 686 | PNG standard chunk naming conventions: 687 | First byte: uppercase = critical, lowercase = ancillary 688 | Second byte: uppercase = public, lowercase = private 689 | Third byte: must be uppercase 690 | Fourth byte: uppercase = unsafe to copy, lowercase = safe to copy 691 | */ 692 | 693 | /*get the length of the data of the chunk. Total chunk length has 12 bytes more.*/ 694 | unsigned lodepng_chunk_length(const unsigned char* chunk); 695 | 696 | /*puts the 4-byte type in null terminated string*/ 697 | void lodepng_chunk_type(char type[5], const unsigned char* chunk); 698 | 699 | /*check if the type is the given type*/ 700 | unsigned char lodepng_chunk_type_equals(const unsigned char* chunk, const char* type); 701 | 702 | /*0: it's one of the critical chunk types, 1: it's an ancillary chunk (see PNG standard)*/ 703 | unsigned char lodepng_chunk_ancillary(const unsigned char* chunk); 704 | 705 | /*0: public, 1: private (see PNG standard)*/ 706 | unsigned char lodepng_chunk_private(const unsigned char* chunk); 707 | 708 | /*0: the chunk is unsafe to copy, 1: the chunk is safe to copy (see PNG standard)*/ 709 | unsigned char lodepng_chunk_safetocopy(const unsigned char* chunk); 710 | 711 | /*get pointer to the data of the chunk, where the input points to the header of the chunk*/ 712 | unsigned char* lodepng_chunk_data(unsigned char* chunk); 713 | const unsigned char* lodepng_chunk_data_const(const unsigned char* chunk); 714 | 715 | /*returns 0 if the crc is correct, 1 if it's incorrect (0 for OK as usual!)*/ 716 | unsigned lodepng_chunk_check_crc(const unsigned char* chunk); 717 | 718 | /*generates the correct CRC from the data and puts it in the last 4 bytes of the chunk*/ 719 | void lodepng_chunk_generate_crc(unsigned char* chunk); 720 | 721 | /*iterate to next chunks. don't use on IEND chunk, as there is no next chunk then*/ 722 | unsigned char* lodepng_chunk_next(unsigned char* chunk); 723 | const unsigned char* lodepng_chunk_next_const(const unsigned char* chunk); 724 | 725 | /* 726 | Appends chunk to the data in out. The given chunk should already have its chunk header. 727 | The out variable and outlength are updated to reflect the new reallocated buffer. 728 | Returns error code (0 if it went ok) 729 | */ 730 | unsigned lodepng_chunk_append(unsigned char** out, size_t* outlength, const unsigned char* chunk); 731 | 732 | /* 733 | Appends new chunk to out. The chunk to append is given by giving its length, type 734 | and data separately. The type is a 4-letter string. 735 | The out variable and outlength are updated to reflect the new reallocated buffer. 736 | Returne error code (0 if it went ok) 737 | */ 738 | unsigned lodepng_chunk_create(unsigned char** out, size_t* outlength, unsigned length, 739 | const char* type, const unsigned char* data); 740 | 741 | 742 | /*Calculate CRC32 of buffer*/ 743 | unsigned lodepng_crc32(const unsigned char* buf, size_t len); 744 | #endif /*LODEPNG_COMPILE_PNG*/ 745 | 746 | 747 | #ifdef LODEPNG_COMPILE_ZLIB 748 | /* 749 | This zlib part can be used independently to zlib compress and decompress a 750 | buffer. It cannot be used to create gzip files however, and it only supports the 751 | part of zlib that is required for PNG, it does not support dictionaries. 752 | */ 753 | 754 | #ifdef LODEPNG_COMPILE_DECODER 755 | /*Inflate a buffer. Inflate is the decompression step of deflate. Out buffer must be freed after use.*/ 756 | unsigned lodepng_inflate(unsigned char** out, size_t* outsize, 757 | const unsigned char* in, size_t insize, 758 | const LodePNGDecompressSettings* settings); 759 | 760 | /* 761 | Decompresses Zlib data. Reallocates the out buffer and appends the data. The 762 | data must be according to the zlib specification. 763 | Either, *out must be NULL and *outsize must be 0, or, *out must be a valid 764 | buffer and *outsize its size in bytes. out must be freed by user after usage. 765 | */ 766 | unsigned lodepng_zlib_decompress(unsigned char** out, size_t* outsize, 767 | const unsigned char* in, size_t insize, 768 | const LodePNGDecompressSettings* settings); 769 | #endif /*LODEPNG_COMPILE_DECODER*/ 770 | 771 | #ifdef LODEPNG_COMPILE_ENCODER 772 | /* 773 | Compresses data with Zlib. Reallocates the out buffer and appends the data. 774 | Zlib adds a small header and trailer around the deflate data. 775 | The data is output in the format of the zlib specification. 776 | Either, *out must be NULL and *outsize must be 0, or, *out must be a valid 777 | buffer and *outsize its size in bytes. out must be freed by user after usage. 778 | */ 779 | unsigned lodepng_zlib_compress(unsigned char** out, size_t* outsize, 780 | const unsigned char* in, size_t insize, 781 | const LodePNGCompressSettings* settings); 782 | 783 | /* 784 | Find length-limited Huffman code for given frequencies. This function is in the 785 | public interface only for tests, it's used internally by lodepng_deflate. 786 | */ 787 | unsigned lodepng_huffman_code_lengths(unsigned* lengths, const unsigned* frequencies, 788 | size_t numcodes, unsigned maxbitlen); 789 | 790 | /*Compress a buffer with deflate. See RFC 1951. Out buffer must be freed after use.*/ 791 | unsigned lodepng_deflate(unsigned char** out, size_t* outsize, 792 | const unsigned char* in, size_t insize, 793 | const LodePNGCompressSettings* settings); 794 | 795 | #endif /*LODEPNG_COMPILE_ENCODER*/ 796 | #endif /*LODEPNG_COMPILE_ZLIB*/ 797 | 798 | #ifdef LODEPNG_COMPILE_DISK 799 | /* 800 | Load a file from disk into buffer. The function allocates the out buffer, and 801 | after usage you should free it. 802 | out: output parameter, contains pointer to loaded buffer. 803 | outsize: output parameter, size of the allocated out buffer 804 | filename: the path to the file to load 805 | return value: error code (0 means ok) 806 | */ 807 | unsigned lodepng_load_file(unsigned char** out, size_t* outsize, const char* filename); 808 | 809 | /* 810 | Save a file from buffer to disk. Warning, if it exists, this function overwrites 811 | the file without warning! 812 | buffer: the buffer to write 813 | buffersize: size of the buffer to write 814 | filename: the path to the file to save to 815 | return value: error code (0 means ok) 816 | */ 817 | unsigned lodepng_save_file(const unsigned char* buffer, size_t buffersize, const char* filename); 818 | #endif /*LODEPNG_COMPILE_DISK*/ 819 | 820 | #ifdef LODEPNG_COMPILE_CPP 821 | //The LodePNG C++ wrapper uses std::vectors instead of manually allocated memory buffers. 822 | namespace lodepng 823 | { 824 | #ifdef LODEPNG_COMPILE_PNG 825 | class State : public LodePNGState 826 | { 827 | public: 828 | State(); 829 | State(const State& other); 830 | virtual ~State(); 831 | State& operator=(const State& other); 832 | }; 833 | 834 | #ifdef LODEPNG_COMPILE_DECODER 835 | //Same as other lodepng::decode, but using a State for more settings and information. 836 | unsigned decode(std::vector& out, unsigned& w, unsigned& h, 837 | State& state, 838 | const unsigned char* in, size_t insize); 839 | unsigned decode(std::vector& out, unsigned& w, unsigned& h, 840 | State& state, 841 | const std::vector& in); 842 | #endif /*LODEPNG_COMPILE_DECODER*/ 843 | 844 | #ifdef LODEPNG_COMPILE_ENCODER 845 | //Same as other lodepng::encode, but using a State for more settings and information. 846 | unsigned encode(std::vector& out, 847 | const unsigned char* in, unsigned w, unsigned h, 848 | State& state); 849 | unsigned encode(std::vector& out, 850 | const std::vector& in, unsigned w, unsigned h, 851 | State& state); 852 | #endif /*LODEPNG_COMPILE_ENCODER*/ 853 | 854 | #ifdef LODEPNG_COMPILE_DISK 855 | /* 856 | Load a file from disk into an std::vector. If the vector is empty, then either 857 | the file doesn't exist or is an empty file. 858 | */ 859 | void load_file(std::vector& buffer, const std::string& filename); 860 | 861 | /* 862 | Save the binary data in an std::vector to a file on disk. The file is overwritten 863 | without warning. 864 | */ 865 | void save_file(const std::vector& buffer, const std::string& filename); 866 | #endif //LODEPNG_COMPILE_DISK 867 | #endif //LODEPNG_COMPILE_PNG 868 | 869 | #ifdef LODEPNG_COMPILE_ZLIB 870 | #ifdef LODEPNG_COMPILE_DECODER 871 | //Zlib-decompress an unsigned char buffer 872 | unsigned decompress(std::vector& out, const unsigned char* in, size_t insize, 873 | const LodePNGDecompressSettings& settings = lodepng_default_decompress_settings); 874 | 875 | //Zlib-decompress an std::vector 876 | unsigned decompress(std::vector& out, const std::vector& in, 877 | const LodePNGDecompressSettings& settings = lodepng_default_decompress_settings); 878 | #endif //LODEPNG_COMPILE_DECODER 879 | 880 | #ifdef LODEPNG_COMPILE_ENCODER 881 | //Zlib-compress an unsigned char buffer 882 | unsigned compress(std::vector& out, const unsigned char* in, size_t insize, 883 | const LodePNGCompressSettings& settings = lodepng_default_compress_settings); 884 | 885 | //Zlib-compress an std::vector 886 | unsigned compress(std::vector& out, const std::vector& in, 887 | const LodePNGCompressSettings& settings = lodepng_default_compress_settings); 888 | #endif //LODEPNG_COMPILE_ENCODER 889 | #endif //LODEPNG_COMPILE_ZLIB 890 | } //namespace lodepng 891 | #endif /*LODEPNG_COMPILE_CPP*/ 892 | 893 | /* 894 | TODO: 895 | [.] test if there are no memory leaks or security exploits - done a lot but needs to be checked often 896 | [.] check compatibility with vareous compilers - done but needs to be redone for every newer version 897 | [X] converting color to 16-bit per channel types 898 | [ ] read all public PNG chunk types (but never let the color profile and gamma ones touch RGB values) 899 | [ ] make sure encoder generates no chunks with size > (2^31)-1 900 | [ ] partial decoding (stream processing) 901 | [X] let the "isFullyOpaque" function check color keys and transparent palettes too 902 | [X] better name for the variables "codes", "codesD", "codelengthcodes", "clcl" and "lldl" 903 | [ ] don't stop decoding on errors like 69, 57, 58 (make warnings) 904 | [ ] make option to choose if the raw image with non multiple of 8 bits per scanline should have padding bits or not 905 | [ ] let the C++ wrapper catch exceptions coming from the standard library and return LodePNG error codes 906 | */ 907 | 908 | #endif /*LODEPNG_H inclusion guard*/ 909 | 910 | /* 911 | LodePNG Documentation 912 | --------------------- 913 | 914 | 0. table of contents 915 | -------------------- 916 | 917 | 1. about 918 | 1.1. supported features 919 | 1.2. features not supported 920 | 2. C and C++ version 921 | 3. security 922 | 4. decoding 923 | 5. encoding 924 | 6. color conversions 925 | 6.1. PNG color types 926 | 6.2. color conversions 927 | 6.3. padding bits 928 | 6.4. A note about 16-bits per channel and endianness 929 | 7. error values 930 | 8. chunks and PNG editing 931 | 9. compiler support 932 | 10. examples 933 | 10.1. decoder C++ example 934 | 10.2. decoder C example 935 | 11. changes 936 | 12. contact information 937 | 938 | 939 | 1. about 940 | -------- 941 | 942 | PNG is a file format to store raster images losslessly with good compression, 943 | supporting different color types and alpha channel. 944 | 945 | LodePNG is a PNG codec according to the Portable Network Graphics (PNG) 946 | Specification (Second Edition) - W3C Recommendation 10 November 2003. 947 | 948 | The specifications used are: 949 | 950 | *) Portable Network Graphics (PNG) Specification (Second Edition): 951 | http://www.w3.org/TR/2003/REC-PNG-20031110 952 | *) RFC 1950 ZLIB Compressed Data Format version 3.3: 953 | http://www.gzip.org/zlib/rfc-zlib.html 954 | *) RFC 1951 DEFLATE Compressed Data Format Specification ver 1.3: 955 | http://www.gzip.org/zlib/rfc-deflate.html 956 | 957 | The most recent version of LodePNG can currently be found at 958 | http://lodev.org/lodepng/ 959 | 960 | LodePNG works both in C (ISO C90) and C++, with a C++ wrapper that adds 961 | extra functionality. 962 | 963 | LodePNG exists out of two files: 964 | -lodepng.h: the header file for both C and C++ 965 | -lodepng.c(pp): give it the name lodepng.c or lodepng.cpp (or .cc) depending on your usage 966 | 967 | If you want to start using LodePNG right away without reading this doc, get the 968 | examples from the LodePNG website to see how to use it in code, or check the 969 | smaller examples in chapter 13 here. 970 | 971 | LodePNG is simple but only supports the basic requirements. To achieve 972 | simplicity, the following design choices were made: There are no dependencies 973 | on any external library. There are functions to decode and encode a PNG with 974 | a single function call, and extended versions of these functions taking a 975 | LodePNGState struct allowing to specify or get more information. By default 976 | the colors of the raw image are always RGB or RGBA, no matter what color type 977 | the PNG file uses. To read and write files, there are simple functions to 978 | convert the files to/from buffers in memory. 979 | 980 | This all makes LodePNG suitable for loading textures in games, demos and small 981 | programs, ... It's less suitable for full fledged image editors, loading PNGs 982 | over network (it requires all the image data to be available before decoding can 983 | begin), life-critical systems, ... 984 | 985 | 1.1. supported features 986 | ----------------------- 987 | 988 | The following features are supported by the decoder: 989 | 990 | *) decoding of PNGs with any color type, bit depth and interlace mode, to a 24- or 32-bit color raw image, 991 | or the same color type as the PNG 992 | *) encoding of PNGs, from any raw image to 24- or 32-bit color, or the same color type as the raw image 993 | *) Adam7 interlace and deinterlace for any color type 994 | *) loading the image from harddisk or decoding it from a buffer from other sources than harddisk 995 | *) support for alpha channels, including RGBA color model, translucent palettes and color keying 996 | *) zlib decompression (inflate) 997 | *) zlib compression (deflate) 998 | *) CRC32 and ADLER32 checksums 999 | *) handling of unknown chunks, allowing making a PNG editor that stores custom and unknown chunks. 1000 | *) the following chunks are supported (generated/interpreted) by both encoder and decoder: 1001 | IHDR: header information 1002 | PLTE: color palette 1003 | IDAT: pixel data 1004 | IEND: the final chunk 1005 | tRNS: transparency for palettized images 1006 | tEXt: textual information 1007 | zTXt: compressed textual information 1008 | iTXt: international textual information 1009 | bKGD: suggested background color 1010 | pHYs: physical dimensions 1011 | tIME: modification time 1012 | 1013 | 1.2. features not supported 1014 | --------------------------- 1015 | 1016 | The following features are _not_ supported: 1017 | 1018 | *) some features needed to make a conformant PNG-Editor might be still missing. 1019 | *) partial loading/stream processing. All data must be available and is processed in one call. 1020 | *) The following public chunks are not supported but treated as unknown chunks by LodePNG 1021 | cHRM, gAMA, iCCP, sRGB, sBIT, hIST, sPLT 1022 | Some of these are not supported on purpose: LodePNG wants to provide the RGB values 1023 | stored in the pixels, not values modified by system dependent gamma or color models. 1024 | 1025 | 1026 | 2. C and C++ version 1027 | -------------------- 1028 | 1029 | The C version uses buffers allocated with alloc that you need to free() 1030 | yourself. You need to use init and cleanup functions for each struct whenever 1031 | using a struct from the C version to avoid exploits and memory leaks. 1032 | 1033 | The C++ version has extra functions with std::vectors in the interface and the 1034 | lodepng::State class which is a LodePNGState with constructor and destructor. 1035 | 1036 | These files work without modification for both C and C++ compilers because all 1037 | the additional C++ code is in "#ifdef __cplusplus" blocks that make C-compilers 1038 | ignore it, and the C code is made to compile both with strict ISO C90 and C++. 1039 | 1040 | To use the C++ version, you need to rename the source file to lodepng.cpp 1041 | (instead of lodepng.c), and compile it with a C++ compiler. 1042 | 1043 | To use the C version, you need to rename the source file to lodepng.c (instead 1044 | of lodepng.cpp), and compile it with a C compiler. 1045 | 1046 | 1047 | 3. Security 1048 | ----------- 1049 | 1050 | Even if carefully designed, it's always possible that LodePNG contains possible 1051 | exploits. If you discover one, please let me know, and it will be fixed. 1052 | 1053 | When using LodePNG, care has to be taken with the C version of LodePNG, as well 1054 | as the C-style structs when working with C++. The following conventions are used 1055 | for all C-style structs: 1056 | 1057 | -if a struct has a corresponding init function, always call the init function when making a new one 1058 | -if a struct has a corresponding cleanup function, call it before the struct disappears to avoid memory leaks 1059 | -if a struct has a corresponding copy function, use the copy function instead of "=". 1060 | The destination must also be inited already. 1061 | 1062 | 1063 | 4. Decoding 1064 | ----------- 1065 | 1066 | Decoding converts a PNG compressed image to a raw pixel buffer. 1067 | 1068 | Most documentation on using the decoder is at its declarations in the header 1069 | above. For C, simple decoding can be done with functions such as 1070 | lodepng_decode32, and more advanced decoding can be done with the struct 1071 | LodePNGState and lodepng_decode. For C++, all decoding can be done with the 1072 | various lodepng::decode functions, and lodepng::State can be used for advanced 1073 | features. 1074 | 1075 | When using the LodePNGState, it uses the following fields for decoding: 1076 | *) LodePNGInfo info_png: it stores extra information about the PNG (the input) in here 1077 | *) LodePNGColorMode info_raw: here you can say what color mode of the raw image (the output) you want to get 1078 | *) LodePNGDecoderSettings decoder: you can specify a few extra settings for the decoder to use 1079 | 1080 | LodePNGInfo info_png 1081 | -------------------- 1082 | 1083 | After decoding, this contains extra information of the PNG image, except the actual 1084 | pixels, width and height because these are already gotten directly from the decoder 1085 | functions. 1086 | 1087 | It contains for example the original color type of the PNG image, text comments, 1088 | suggested background color, etc... More details about the LodePNGInfo struct are 1089 | at its declaration documentation. 1090 | 1091 | LodePNGColorMode info_raw 1092 | ------------------------- 1093 | 1094 | When decoding, here you can specify which color type you want 1095 | the resulting raw image to be. If this is different from the colortype of the 1096 | PNG, then the decoder will automatically convert the result. This conversion 1097 | always works, except if you want it to convert a color PNG to greyscale or to 1098 | a palette with missing colors. 1099 | 1100 | By default, 32-bit color is used for the result. 1101 | 1102 | LodePNGDecoderSettings decoder 1103 | ------------------------------ 1104 | 1105 | The settings can be used to ignore the errors created by invalid CRC and Adler32 1106 | chunks, and to disable the decoding of tEXt chunks. 1107 | 1108 | There's also a setting color_convert, true by default. If false, no conversion 1109 | is done, the resulting data will be as it was in the PNG (after decompression) 1110 | and you'll have to puzzle the colors of the pixels together yourself using the 1111 | color type information in the LodePNGInfo. 1112 | 1113 | 1114 | 5. Encoding 1115 | ----------- 1116 | 1117 | Encoding converts a raw pixel buffer to a PNG compressed image. 1118 | 1119 | Most documentation on using the encoder is at its declarations in the header 1120 | above. For C, simple encoding can be done with functions such as 1121 | lodepng_encode32, and more advanced decoding can be done with the struct 1122 | LodePNGState and lodepng_encode. For C++, all encoding can be done with the 1123 | various lodepng::encode functions, and lodepng::State can be used for advanced 1124 | features. 1125 | 1126 | Like the decoder, the encoder can also give errors. However it gives less errors 1127 | since the encoder input is trusted, the decoder input (a PNG image that could 1128 | be forged by anyone) is not trusted. 1129 | 1130 | When using the LodePNGState, it uses the following fields for encoding: 1131 | *) LodePNGInfo info_png: here you specify how you want the PNG (the output) to be. 1132 | *) LodePNGColorMode info_raw: here you say what color type of the raw image (the input) has 1133 | *) LodePNGEncoderSettings encoder: you can specify a few settings for the encoder to use 1134 | 1135 | LodePNGInfo info_png 1136 | -------------------- 1137 | 1138 | When encoding, you use this the opposite way as when decoding: for encoding, 1139 | you fill in the values you want the PNG to have before encoding. By default it's 1140 | not needed to specify a color type for the PNG since it's automatically chosen, 1141 | but it's possible to choose it yourself given the right settings. 1142 | 1143 | The encoder will not always exactly match the LodePNGInfo struct you give, 1144 | it tries as close as possible. Some things are ignored by the encoder. The 1145 | encoder uses, for example, the following settings from it when applicable: 1146 | colortype and bitdepth, text chunks, time chunk, the color key, the palette, the 1147 | background color, the interlace method, unknown chunks, ... 1148 | 1149 | When encoding to a PNG with colortype 3, the encoder will generate a PLTE chunk. 1150 | If the palette contains any colors for which the alpha channel is not 255 (so 1151 | there are translucent colors in the palette), it'll add a tRNS chunk. 1152 | 1153 | LodePNGColorMode info_raw 1154 | ------------------------- 1155 | 1156 | You specify the color type of the raw image that you give to the input here, 1157 | including a possible transparent color key and palette you happen to be using in 1158 | your raw image data. 1159 | 1160 | By default, 32-bit color is assumed, meaning your input has to be in RGBA 1161 | format with 4 bytes (unsigned chars) per pixel. 1162 | 1163 | LodePNGEncoderSettings encoder 1164 | ------------------------------ 1165 | 1166 | The following settings are supported (some are in sub-structs): 1167 | *) auto_convert: when this option is enabled, the encoder will 1168 | automatically choose the smallest possible color mode (including color key) that 1169 | can encode the colors of all pixels without information loss. 1170 | *) btype: the block type for LZ77. 0 = uncompressed, 1 = fixed huffman tree, 1171 | 2 = dynamic huffman tree (best compression). Should be 2 for proper 1172 | compression. 1173 | *) use_lz77: whether or not to use LZ77 for compressed block types. Should be 1174 | true for proper compression. 1175 | *) windowsize: the window size used by the LZ77 encoder (1 - 32768). Has value 1176 | 2048 by default, but can be set to 32768 for better, but slow, compression. 1177 | *) force_palette: if colortype is 2 or 6, you can make the encoder write a PLTE 1178 | chunk if force_palette is true. This can used as suggested palette to convert 1179 | to by viewers that don't support more than 256 colors (if those still exist) 1180 | *) add_id: add text chunk "Encoder: LodePNG " to the image. 1181 | *) text_compression: default 1. If 1, it'll store texts as zTXt instead of tEXt chunks. 1182 | zTXt chunks use zlib compression on the text. This gives a smaller result on 1183 | large texts but a larger result on small texts (such as a single program name). 1184 | It's all tEXt or all zTXt though, there's no separate setting per text yet. 1185 | 1186 | 1187 | 6. color conversions 1188 | -------------------- 1189 | 1190 | An important thing to note about LodePNG, is that the color type of the PNG, and 1191 | the color type of the raw image, are completely independent. By default, when 1192 | you decode a PNG, you get the result as a raw image in the color type you want, 1193 | no matter whether the PNG was encoded with a palette, greyscale or RGBA color. 1194 | And if you encode an image, by default LodePNG will automatically choose the PNG 1195 | color type that gives good compression based on the values of colors and amount 1196 | of colors in the image. It can be configured to let you control it instead as 1197 | well, though. 1198 | 1199 | To be able to do this, LodePNG does conversions from one color mode to another. 1200 | It can convert from almost any color type to any other color type, except the 1201 | following conversions: RGB to greyscale is not supported, and converting to a 1202 | palette when the palette doesn't have a required color is not supported. This is 1203 | not supported on purpose: this is information loss which requires a color 1204 | reduction algorithm that is beyong the scope of a PNG encoder (yes, RGB to grey 1205 | is easy, but there are multiple ways if you want to give some channels more 1206 | weight). 1207 | 1208 | By default, when decoding, you get the raw image in 32-bit RGBA or 24-bit RGB 1209 | color, no matter what color type the PNG has. And by default when encoding, 1210 | LodePNG automatically picks the best color model for the output PNG, and expects 1211 | the input image to be 32-bit RGBA or 24-bit RGB. So, unless you want to control 1212 | the color format of the images yourself, you can skip this chapter. 1213 | 1214 | 6.1. PNG color types 1215 | -------------------- 1216 | 1217 | A PNG image can have many color types, ranging from 1-bit color to 64-bit color, 1218 | as well as palettized color modes. After the zlib decompression and unfiltering 1219 | in the PNG image is done, the raw pixel data will have that color type and thus 1220 | a certain amount of bits per pixel. If you want the output raw image after 1221 | decoding to have another color type, a conversion is done by LodePNG. 1222 | 1223 | The PNG specification gives the following color types: 1224 | 1225 | 0: greyscale, bit depths 1, 2, 4, 8, 16 1226 | 2: RGB, bit depths 8 and 16 1227 | 3: palette, bit depths 1, 2, 4 and 8 1228 | 4: greyscale with alpha, bit depths 8 and 16 1229 | 6: RGBA, bit depths 8 and 16 1230 | 1231 | Bit depth is the amount of bits per pixel per color channel. So the total amount 1232 | of bits per pixel is: amount of channels * bitdepth. 1233 | 1234 | 6.2. color conversions 1235 | ---------------------- 1236 | 1237 | As explained in the sections about the encoder and decoder, you can specify 1238 | color types and bit depths in info_png and info_raw to change the default 1239 | behaviour. 1240 | 1241 | If, when decoding, you want the raw image to be something else than the default, 1242 | you need to set the color type and bit depth you want in the LodePNGColorMode, 1243 | or the parameters of the simple function of LodePNG you're using. 1244 | 1245 | If, when encoding, you use another color type than the default in the input 1246 | image, you need to specify its color type and bit depth in the LodePNGColorMode 1247 | of the raw image, or use the parameters of the simplefunction of LodePNG you're 1248 | using. 1249 | 1250 | If, when encoding, you don't want LodePNG to choose the output PNG color type 1251 | but control it yourself, you need to set auto_convert in the encoder settings 1252 | to LAC_NONE, and specify the color type you want in the LodePNGInfo of the 1253 | encoder. 1254 | 1255 | If you do any of the above, LodePNG may need to do a color conversion, which 1256 | follows the rules below, and may sometimes not be allowed. 1257 | 1258 | To avoid some confusion: 1259 | -the decoder converts from PNG to raw image 1260 | -the encoder converts from raw image to PNG 1261 | -the colortype and bitdepth in LodePNGColorMode info_raw, are those of the raw image 1262 | -the colortype and bitdepth in the color field of LodePNGInfo info_png, are those of the PNG 1263 | -when encoding, the color type in LodePNGInfo is ignored if auto_convert 1264 | is enabled, it is automatically generated instead 1265 | -when decoding, the color type in LodePNGInfo is set by the decoder to that of the original 1266 | PNG image, but it can be ignored since the raw image has the color type you requested instead 1267 | -if the color type of the LodePNGColorMode and PNG image aren't the same, a conversion 1268 | between the color types is done if the color types are supported. If it is not 1269 | supported, an error is returned. If the types are the same, no conversion is done. 1270 | -even though some conversions aren't supported, LodePNG supports loading PNGs from any 1271 | colortype and saving PNGs to any colortype, sometimes it just requires preparing 1272 | the raw image correctly before encoding. 1273 | -both encoder and decoder use the same color converter. 1274 | 1275 | Non supported color conversions: 1276 | -color to greyscale: no error is thrown, but the result will look ugly because 1277 | only the red channel is taken 1278 | -anything, to palette when that palette does not have that color in it: in this 1279 | case an error is thrown 1280 | 1281 | Supported color conversions: 1282 | -anything to 8-bit RGB, 8-bit RGBA, 16-bit RGB, 16-bit RGBA 1283 | -any grey or grey+alpha, to grey or grey+alpha 1284 | -anything to a palette, as long as the palette has the requested colors in it 1285 | -removing alpha channel 1286 | -higher to smaller bitdepth, and vice versa 1287 | 1288 | If you want no color conversion to be done: 1289 | -In the encoder, you can make it save a PNG with any color type by giving the 1290 | raw color mode and LodePNGInfo the same color mode, and setting auto_convert to 1291 | LAC_NO. 1292 | -In the decoder, you can make it store the pixel data in the same color type 1293 | as the PNG has, by setting the color_convert setting to false. Settings in 1294 | info_raw are then ignored. 1295 | 1296 | The function lodepng_convert does the color conversion. It is available in the 1297 | interface but normally isn't needed since the encoder and decoder already call 1298 | it. 1299 | 1300 | 6.3. padding bits 1301 | ----------------- 1302 | 1303 | In the PNG file format, if a less than 8-bit per pixel color type is used and the scanlines 1304 | have a bit amount that isn't a multiple of 8, then padding bits are used so that each 1305 | scanline starts at a fresh byte. But that is NOT true for the LodePNG raw input and output. 1306 | The raw input image you give to the encoder, and the raw output image you get from the decoder 1307 | will NOT have these padding bits, e.g. in the case of a 1-bit image with a width 1308 | of 7 pixels, the first pixel of the second scanline will the the 8th bit of the first byte, 1309 | not the first bit of a new byte. 1310 | 1311 | 6.4. A note about 16-bits per channel and endianness 1312 | ---------------------------------------------------- 1313 | 1314 | LodePNG uses unsigned char arrays for 16-bit per channel colors too, just like 1315 | for any other color format. The 16-bit values are stored in big endian (most 1316 | significant byte first) in these arrays. This is the opposite order of the 1317 | little endian used by x86 CPU's. 1318 | 1319 | LodePNG always uses big endian because the PNG file format does so internally. 1320 | Conversions to other formats than PNG uses internally are not supported by 1321 | LodePNG on purpose, there are myriads of formats, including endianness of 16-bit 1322 | colors, the order in which you store R, G, B and A, and so on. Supporting and 1323 | converting to/from all that is outside the scope of LodePNG. 1324 | 1325 | This may mean that, depending on your use case, you may want to convert the big 1326 | endian output of LodePNG to little endian with a for loop. This is certainly not 1327 | always needed, many applications and libraries support big endian 16-bit colors 1328 | anyway, but it means you cannot simply cast the unsigned char* buffer to an 1329 | unsigned short* buffer on x86 CPUs. 1330 | 1331 | 1332 | 7. error values 1333 | --------------- 1334 | 1335 | All functions in LodePNG that return an error code, return 0 if everything went 1336 | OK, or a non-zero code if there was an error. 1337 | 1338 | The meaning of the LodePNG error values can be retrieved with the function 1339 | lodepng_error_text: given the numerical error code, it returns a description 1340 | of the error in English as a string. 1341 | 1342 | Check the implementation of lodepng_error_text to see the meaning of each code. 1343 | 1344 | 1345 | 8. chunks and PNG editing 1346 | ------------------------- 1347 | 1348 | If you want to add extra chunks to a PNG you encode, or use LodePNG for a PNG 1349 | editor that should follow the rules about handling of unknown chunks, or if your 1350 | program is able to read other types of chunks than the ones handled by LodePNG, 1351 | then that's possible with the chunk functions of LodePNG. 1352 | 1353 | A PNG chunk has the following layout: 1354 | 1355 | 4 bytes length 1356 | 4 bytes type name 1357 | length bytes data 1358 | 4 bytes CRC 1359 | 1360 | 8.1. iterating through chunks 1361 | ----------------------------- 1362 | 1363 | If you have a buffer containing the PNG image data, then the first chunk (the 1364 | IHDR chunk) starts at byte number 8 of that buffer. The first 8 bytes are the 1365 | signature of the PNG and are not part of a chunk. But if you start at byte 8 1366 | then you have a chunk, and can check the following things of it. 1367 | 1368 | NOTE: none of these functions check for memory buffer boundaries. To avoid 1369 | exploits, always make sure the buffer contains all the data of the chunks. 1370 | When using lodepng_chunk_next, make sure the returned value is within the 1371 | allocated memory. 1372 | 1373 | unsigned lodepng_chunk_length(const unsigned char* chunk): 1374 | 1375 | Get the length of the chunk's data. The total chunk length is this length + 12. 1376 | 1377 | void lodepng_chunk_type(char type[5], const unsigned char* chunk): 1378 | unsigned char lodepng_chunk_type_equals(const unsigned char* chunk, const char* type): 1379 | 1380 | Get the type of the chunk or compare if it's a certain type 1381 | 1382 | unsigned char lodepng_chunk_critical(const unsigned char* chunk): 1383 | unsigned char lodepng_chunk_private(const unsigned char* chunk): 1384 | unsigned char lodepng_chunk_safetocopy(const unsigned char* chunk): 1385 | 1386 | Check if the chunk is critical in the PNG standard (only IHDR, PLTE, IDAT and IEND are). 1387 | Check if the chunk is private (public chunks are part of the standard, private ones not). 1388 | Check if the chunk is safe to copy. If it's not, then, when modifying data in a critical 1389 | chunk, unsafe to copy chunks of the old image may NOT be saved in the new one if your 1390 | program doesn't handle that type of unknown chunk. 1391 | 1392 | unsigned char* lodepng_chunk_data(unsigned char* chunk): 1393 | const unsigned char* lodepng_chunk_data_const(const unsigned char* chunk): 1394 | 1395 | Get a pointer to the start of the data of the chunk. 1396 | 1397 | unsigned lodepng_chunk_check_crc(const unsigned char* chunk): 1398 | void lodepng_chunk_generate_crc(unsigned char* chunk): 1399 | 1400 | Check if the crc is correct or generate a correct one. 1401 | 1402 | unsigned char* lodepng_chunk_next(unsigned char* chunk): 1403 | const unsigned char* lodepng_chunk_next_const(const unsigned char* chunk): 1404 | 1405 | Iterate to the next chunk. This works if you have a buffer with consecutive chunks. Note that these 1406 | functions do no boundary checking of the allocated data whatsoever, so make sure there is enough 1407 | data available in the buffer to be able to go to the next chunk. 1408 | 1409 | unsigned lodepng_chunk_append(unsigned char** out, size_t* outlength, const unsigned char* chunk): 1410 | unsigned lodepng_chunk_create(unsigned char** out, size_t* outlength, unsigned length, 1411 | const char* type, const unsigned char* data): 1412 | 1413 | These functions are used to create new chunks that are appended to the data in *out that has 1414 | length *outlength. The append function appends an existing chunk to the new data. The create 1415 | function creates a new chunk with the given parameters and appends it. Type is the 4-letter 1416 | name of the chunk. 1417 | 1418 | 8.2. chunks in info_png 1419 | ----------------------- 1420 | 1421 | The LodePNGInfo struct contains fields with the unknown chunk in it. It has 3 1422 | buffers (each with size) to contain 3 types of unknown chunks: 1423 | the ones that come before the PLTE chunk, the ones that come between the PLTE 1424 | and the IDAT chunks, and the ones that come after the IDAT chunks. 1425 | It's necessary to make the distionction between these 3 cases because the PNG 1426 | standard forces to keep the ordering of unknown chunks compared to the critical 1427 | chunks, but does not force any other ordering rules. 1428 | 1429 | info_png.unknown_chunks_data[0] is the chunks before PLTE 1430 | info_png.unknown_chunks_data[1] is the chunks after PLTE, before IDAT 1431 | info_png.unknown_chunks_data[2] is the chunks after IDAT 1432 | 1433 | The chunks in these 3 buffers can be iterated through and read by using the same 1434 | way described in the previous subchapter. 1435 | 1436 | When using the decoder to decode a PNG, you can make it store all unknown chunks 1437 | if you set the option settings.remember_unknown_chunks to 1. By default, this 1438 | option is off (0). 1439 | 1440 | The encoder will always encode unknown chunks that are stored in the info_png. 1441 | If you need it to add a particular chunk that isn't known by LodePNG, you can 1442 | use lodepng_chunk_append or lodepng_chunk_create to the chunk data in 1443 | info_png.unknown_chunks_data[x]. 1444 | 1445 | Chunks that are known by LodePNG should not be added in that way. E.g. to make 1446 | LodePNG add a bKGD chunk, set background_defined to true and add the correct 1447 | parameters there instead. 1448 | 1449 | 1450 | 9. compiler support 1451 | ------------------- 1452 | 1453 | No libraries other than the current standard C library are needed to compile 1454 | LodePNG. For the C++ version, only the standard C++ library is needed on top. 1455 | Add the files lodepng.c(pp) and lodepng.h to your project, include 1456 | lodepng.h where needed, and your program can read/write PNG files. 1457 | 1458 | If performance is important, use optimization when compiling! For both the 1459 | encoder and decoder, this makes a large difference. 1460 | 1461 | Make sure that LodePNG is compiled with the same compiler of the same version 1462 | and with the same settings as the rest of the program, or the interfaces with 1463 | std::vectors and std::strings in C++ can be incompatible. 1464 | 1465 | CHAR_BITS must be 8 or higher, because LodePNG uses unsigned chars for octets. 1466 | 1467 | *) gcc and g++ 1468 | 1469 | LodePNG is developed in gcc so this compiler is natively supported. It gives no 1470 | warnings with compiler options "-Wall -Wextra -pedantic -ansi", with gcc and g++ 1471 | version 4.7.1 on Linux, 32-bit and 64-bit. 1472 | 1473 | *) Mingw 1474 | 1475 | The Mingw compiler (a port of gcc) for Windows is fully supported by LodePNG. 1476 | 1477 | *) Visual Studio 2005 and up, Visual C++ Express Edition 2005 and up 1478 | 1479 | Visual Studio may give warnings about 'fopen' being deprecated. A multiplatform library 1480 | can't support the proposed Visual Studio alternative however, so LodePNG keeps using 1481 | fopen. If you don't want to see the deprecated warnings, put this on top of lodepng.h 1482 | before the inclusions: 1483 | #define _CRT_SECURE_NO_DEPRECATE 1484 | 1485 | Other than the above warnings, LodePNG should be warning-free with warning 1486 | level 3 (W3). Warning level 4 (W4) will give warnings about integer conversions. 1487 | I'm not planning to resolve these warnings. To get rid of them, let Visual 1488 | Studio use warning level W3 for lodepng.cpp only: right click lodepng.cpp, 1489 | Properties, C/C++, General, Warning Level: Level 3 (/W3). 1490 | 1491 | Visual Studio may want "stdafx.h" files to be included in each source file and 1492 | give an error "unexpected end of file while looking for precompiled header". 1493 | That is not standard C++ and will not be added to the stock LodePNG. You can 1494 | disable it for lodepng.cpp only by right clicking it, Properties, C/C++, 1495 | Precompiled Headers, and set it to Not Using Precompiled Headers there. 1496 | 1497 | *) Visual Studio 6.0 1498 | 1499 | LodePNG support for Visual Studio 6.0 is not guaranteed because VS6 doesn't 1500 | follow the C++ standard correctly. 1501 | 1502 | *) Comeau C/C++ 1503 | 1504 | Vesion 20070107 compiles without problems on the Comeau C/C++ Online Test Drive 1505 | at http://www.comeaucomputing.com/tryitout in both C90 and C++ mode. 1506 | 1507 | *) Compilers on Macintosh 1508 | 1509 | LodePNG has been reported to work both with the gcc and LLVM for Macintosh, both 1510 | for C and C++. 1511 | 1512 | *) Other Compilers 1513 | 1514 | If you encounter problems on other compilers, feel free to let me know and I may 1515 | try to fix it if the compiler is modern standards complient. 1516 | 1517 | 1518 | 10. examples 1519 | ------------ 1520 | 1521 | This decoder example shows the most basic usage of LodePNG. More complex 1522 | examples can be found on the LodePNG website. 1523 | 1524 | 10.1. decoder C++ example 1525 | ------------------------- 1526 | 1527 | #include "lodepng.h" 1528 | #include 1529 | 1530 | int main(int argc, char *argv[]) 1531 | { 1532 | const char* filename = argc > 1 ? argv[1] : "test.png"; 1533 | 1534 | //load and decode 1535 | std::vector image; 1536 | unsigned width, height; 1537 | unsigned error = lodepng::decode(image, width, height, filename); 1538 | 1539 | //if there's an error, display it 1540 | if(error) std::cout << "decoder error " << error << ": " << lodepng_error_text(error) << std::endl; 1541 | 1542 | //the pixels are now in the vector "image", 4 bytes per pixel, ordered RGBARGBA..., use it as texture, draw it, ... 1543 | } 1544 | 1545 | 10.2. decoder C example 1546 | ----------------------- 1547 | 1548 | #include "lodepng.h" 1549 | 1550 | int main(int argc, char *argv[]) 1551 | { 1552 | unsigned error; 1553 | unsigned char* image; 1554 | size_t width, height; 1555 | const char* filename = argc > 1 ? argv[1] : "test.png"; 1556 | 1557 | error = lodepng_decode32_file(&image, &width, &height, filename); 1558 | 1559 | if(error) printf("decoder error %u: %s\n", error, lodepng_error_text(error)); 1560 | 1561 | / * use image here * / 1562 | 1563 | free(image); 1564 | return 0; 1565 | } 1566 | 1567 | 1568 | 11. changes 1569 | ----------- 1570 | 1571 | The version number of LodePNG is the date of the change given in the format 1572 | yyyymmdd. 1573 | 1574 | Some changes aren't backwards compatible. Those are indicated with a (!) 1575 | symbol. 1576 | 1577 | *) 22 dec 2013: Power of two windowsize required for optimization. 1578 | *) 15 apr 2013: Fixed bug with LAC_ALPHA and color key. 1579 | *) 25 mar 2013: Added an optional feature to ignore some PNG errors (fix_png). 1580 | *) 11 mar 2013 (!): Bugfix with custom free. Changed from "my" to "lodepng_" 1581 | prefix for the custom allocators and made it possible with a new #define to 1582 | use custom ones in your project without needing to change lodepng's code. 1583 | *) 28 jan 2013: Bugfix with color key. 1584 | *) 27 okt 2012: Tweaks in text chunk keyword length error handling. 1585 | *) 8 okt 2012 (!): Added new filter strategy (entropy) and new auto color mode. 1586 | (no palette). Better deflate tree encoding. New compression tweak settings. 1587 | Faster color conversions while decoding. Some internal cleanups. 1588 | *) 23 sep 2012: Reduced warnings in Visual Studio a little bit. 1589 | *) 1 sep 2012 (!): Removed #define's for giving custom (de)compression functions 1590 | and made it work with function pointers instead. 1591 | *) 23 jun 2012: Added more filter strategies. Made it easier to use custom alloc 1592 | and free functions and toggle #defines from compiler flags. Small fixes. 1593 | *) 6 may 2012 (!): Made plugging in custom zlib/deflate functions more flexible. 1594 | *) 22 apr 2012 (!): Made interface more consistent, renaming a lot. Removed 1595 | redundant C++ codec classes. Reduced amount of structs. Everything changed, 1596 | but it is cleaner now imho and functionality remains the same. Also fixed 1597 | several bugs and shrinked the implementation code. Made new samples. 1598 | *) 6 nov 2011 (!): By default, the encoder now automatically chooses the best 1599 | PNG color model and bit depth, based on the amount and type of colors of the 1600 | raw image. For this, autoLeaveOutAlphaChannel replaced by auto_choose_color. 1601 | *) 9 okt 2011: simpler hash chain implementation for the encoder. 1602 | *) 8 sep 2011: lz77 encoder lazy matching instead of greedy matching. 1603 | *) 23 aug 2011: tweaked the zlib compression parameters after benchmarking. 1604 | A bug with the PNG filtertype heuristic was fixed, so that it chooses much 1605 | better ones (it's quite significant). A setting to do an experimental, slow, 1606 | brute force search for PNG filter types is added. 1607 | *) 17 aug 2011 (!): changed some C zlib related function names. 1608 | *) 16 aug 2011: made the code less wide (max 120 characters per line). 1609 | *) 17 apr 2011: code cleanup. Bugfixes. Convert low to 16-bit per sample colors. 1610 | *) 21 feb 2011: fixed compiling for C90. Fixed compiling with sections disabled. 1611 | *) 11 dec 2010: encoding is made faster, based on suggestion by Peter Eastman 1612 | to optimize long sequences of zeros. 1613 | *) 13 nov 2010: added LodePNG_InfoColor_hasPaletteAlpha and 1614 | LodePNG_InfoColor_canHaveAlpha functions for convenience. 1615 | *) 7 nov 2010: added LodePNG_error_text function to get error code description. 1616 | *) 30 okt 2010: made decoding slightly faster 1617 | *) 26 okt 2010: (!) changed some C function and struct names (more consistent). 1618 | Reorganized the documentation and the declaration order in the header. 1619 | *) 08 aug 2010: only changed some comments and external samples. 1620 | *) 05 jul 2010: fixed bug thanks to warnings in the new gcc version. 1621 | *) 14 mar 2010: fixed bug where too much memory was allocated for char buffers. 1622 | *) 02 sep 2008: fixed bug where it could create empty tree that linux apps could 1623 | read by ignoring the problem but windows apps couldn't. 1624 | *) 06 jun 2008: added more error checks for out of memory cases. 1625 | *) 26 apr 2008: added a few more checks here and there to ensure more safety. 1626 | *) 06 mar 2008: crash with encoding of strings fixed 1627 | *) 02 feb 2008: support for international text chunks added (iTXt) 1628 | *) 23 jan 2008: small cleanups, and #defines to divide code in sections 1629 | *) 20 jan 2008: support for unknown chunks allowing using LodePNG for an editor. 1630 | *) 18 jan 2008: support for tIME and pHYs chunks added to encoder and decoder. 1631 | *) 17 jan 2008: ability to encode and decode compressed zTXt chunks added 1632 | Also vareous fixes, such as in the deflate and the padding bits code. 1633 | *) 13 jan 2008: Added ability to encode Adam7-interlaced images. Improved 1634 | filtering code of encoder. 1635 | *) 07 jan 2008: (!) changed LodePNG to use ISO C90 instead of C++. A 1636 | C++ wrapper around this provides an interface almost identical to before. 1637 | Having LodePNG be pure ISO C90 makes it more portable. The C and C++ code 1638 | are together in these files but it works both for C and C++ compilers. 1639 | *) 29 dec 2007: (!) changed most integer types to unsigned int + other tweaks 1640 | *) 30 aug 2007: bug fixed which makes this Borland C++ compatible 1641 | *) 09 aug 2007: some VS2005 warnings removed again 1642 | *) 21 jul 2007: deflate code placed in new namespace separate from zlib code 1643 | *) 08 jun 2007: fixed bug with 2- and 4-bit color, and small interlaced images 1644 | *) 04 jun 2007: improved support for Visual Studio 2005: crash with accessing 1645 | invalid std::vector element [0] fixed, and level 3 and 4 warnings removed 1646 | *) 02 jun 2007: made the encoder add a tag with version by default 1647 | *) 27 may 2007: zlib and png code separated (but still in the same file), 1648 | simple encoder/decoder functions added for more simple usage cases 1649 | *) 19 may 2007: minor fixes, some code cleaning, new error added (error 69), 1650 | moved some examples from here to lodepng_examples.cpp 1651 | *) 12 may 2007: palette decoding bug fixed 1652 | *) 24 apr 2007: changed the license from BSD to the zlib license 1653 | *) 11 mar 2007: very simple addition: ability to encode bKGD chunks. 1654 | *) 04 mar 2007: (!) tEXt chunk related fixes, and support for encoding 1655 | palettized PNG images. Plus little interface change with palette and texts. 1656 | *) 03 mar 2007: Made it encode dynamic Huffman shorter with repeat codes. 1657 | Fixed a bug where the end code of a block had length 0 in the Huffman tree. 1658 | *) 26 feb 2007: Huffman compression with dynamic trees (BTYPE 2) now implemented 1659 | and supported by the encoder, resulting in smaller PNGs at the output. 1660 | *) 27 jan 2007: Made the Adler-32 test faster so that a timewaste is gone. 1661 | *) 24 jan 2007: gave encoder an error interface. Added color conversion from any 1662 | greyscale type to 8-bit greyscale with or without alpha. 1663 | *) 21 jan 2007: (!) Totally changed the interface. It allows more color types 1664 | to convert to and is more uniform. See the manual for how it works now. 1665 | *) 07 jan 2007: Some cleanup & fixes, and a few changes over the last days: 1666 | encode/decode custom tEXt chunks, separate classes for zlib & deflate, and 1667 | at last made the decoder give errors for incorrect Adler32 or Crc. 1668 | *) 01 jan 2007: Fixed bug with encoding PNGs with less than 8 bits per channel. 1669 | *) 29 dec 2006: Added support for encoding images without alpha channel, and 1670 | cleaned out code as well as making certain parts faster. 1671 | *) 28 dec 2006: Added "Settings" to the encoder. 1672 | *) 26 dec 2006: The encoder now does LZ77 encoding and produces much smaller files now. 1673 | Removed some code duplication in the decoder. Fixed little bug in an example. 1674 | *) 09 dec 2006: (!) Placed output parameters of public functions as first parameter. 1675 | Fixed a bug of the decoder with 16-bit per color. 1676 | *) 15 okt 2006: Changed documentation structure 1677 | *) 09 okt 2006: Encoder class added. It encodes a valid PNG image from the 1678 | given image buffer, however for now it's not compressed. 1679 | *) 08 sep 2006: (!) Changed to interface with a Decoder class 1680 | *) 30 jul 2006: (!) LodePNG_InfoPng , width and height are now retrieved in different 1681 | way. Renamed decodePNG to decodePNGGeneric. 1682 | *) 29 jul 2006: (!) Changed the interface: image info is now returned as a 1683 | struct of type LodePNG::LodePNG_Info, instead of a vector, which was a bit clumsy. 1684 | *) 28 jul 2006: Cleaned the code and added new error checks. 1685 | Corrected terminology "deflate" into "inflate". 1686 | *) 23 jun 2006: Added SDL example in the documentation in the header, this 1687 | example allows easy debugging by displaying the PNG and its transparency. 1688 | *) 22 jun 2006: (!) Changed way to obtain error value. Added 1689 | loadFile function for convenience. Made decodePNG32 faster. 1690 | *) 21 jun 2006: (!) Changed type of info vector to unsigned. 1691 | Changed position of palette in info vector. Fixed an important bug that 1692 | happened on PNGs with an uncompressed block. 1693 | *) 16 jun 2006: Internally changed unsigned into unsigned where 1694 | needed, and performed some optimizations. 1695 | *) 07 jun 2006: (!) Renamed functions to decodePNG and placed them 1696 | in LodePNG namespace. Changed the order of the parameters. Rewrote the 1697 | documentation in the header. Renamed files to lodepng.cpp and lodepng.h 1698 | *) 22 apr 2006: Optimized and improved some code 1699 | *) 07 sep 2005: (!) Changed to std::vector interface 1700 | *) 12 aug 2005: Initial release (C++, decoder only) 1701 | 1702 | 1703 | 12. contact information 1704 | ----------------------- 1705 | 1706 | Feel free to contact me with suggestions, problems, comments, ... concerning 1707 | LodePNG. If you encounter a PNG image that doesn't work properly with this 1708 | decoder, feel free to send it and I'll use it to find and fix the problem. 1709 | 1710 | My email address is (puzzle the account and domain together with an @ symbol): 1711 | Domain: gmail dot com. 1712 | Account: lode dot vandevenne. 1713 | 1714 | 1715 | Copyright (c) 2005-2013 Lode Vandevenne 1716 | */ 1717 | -------------------------------------------------------------------------------- /xcode/xcode3/pngquant_Photoshop.xcodeproj/project.pbxproj: -------------------------------------------------------------------------------- 1 | // !$*UTF8*$! 2 | { 3 | archiveVersion = 1; 4 | classes = { 5 | }; 6 | objectVersion = 46; 7 | objects = { 8 | 9 | /* Begin PBXBuildFile section */ 10 | 2A0E4254176D0ED100420489 /* pngquant.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 2A0E424D176D0ED100420489 /* pngquant.cpp */; }; 11 | 2A0E4255176D0ED100420489 /* pngquant.r in Rez */ = {isa = PBXBuildFile; fileRef = 2A0E424F176D0ED100420489 /* pngquant.r */; 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