# HG changeset patch # User John Tsiombikas # Date 1405649260 -10800 # Node ID 819c7ebb1bec329f97e84a803d9e1e169bc55484 # Parent fca1f126d23b969381e9e9c79ace0d1547cb5240 added libimago to avoid the external dependency diff -r fca1f126d23b -r 819c7ebb1bec Makefile --- a/Makefile Fri Jul 18 04:47:27 2014 +0300 +++ b/Makefile Fri Jul 18 05:07:40 2014 +0300 @@ -1,13 +1,16 @@ src = $(wildcard src/*.cc) obj = $(src:.cc=.o) dep = $(obj:.o=.d) -bin = eqdummy +bin = eqemu -CFLAGS = -pedantic -Wall -g +libimago_path = libs/libimago +libimago = $(libimago_path)/libimago.a + +CFLAGS = -pedantic -Wall -g -I$(libimago_path)/src CXXFLAGS = $(CFLAGS) -LDFLAGS = -lGL -lGLU -lGLEW -lX11 -lm -lpthread -limago +LDFLAGS = -lGL -lGLU -lGLEW -lX11 -lm -lpthread -L$(libimago_path) -limago -lpng -ljpeg -lz -$(bin): $(obj) +$(bin): $(obj) $(libimago) $(CXX) -o $@ $(obj) $(LDFLAGS) -include $(dep) @@ -15,6 +18,15 @@ %.d: %.cc @$(CPP) $< $(CXXFLAGS) -MM -MT $(@:.d=.o) >$@ +.PHONY: $(libimago) +$(libimago): + cd $(libimago_path) && ./configure --disable-debug --enable-opt + $(MAKE) -C $(libimago_path) + .PHONY: clean clean: rm -f $(obj) $(bin) + +.PHONY: clean-libs +clean-libs: + $(MAKE) -C $(libimago_path) clean diff -r fca1f126d23b -r 819c7ebb1bec README --- a/README Fri Jul 18 04:47:27 2014 +0300 +++ b/README Fri Jul 18 05:07:40 2014 +0300 @@ -1,4 +1,5 @@ 1. Create 2 pseudoterminals: socat -d -d PTY PTY -2. start ./equeue_dummy /dev/pts/one +2. start ./eqemu /dev/pts/one 3. set the php script to use /dev/pts/theother (make sure apache has permission to rw it). + Try minicom -D /dev/pts/theother with disabled flow control to test it. diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/COPYING --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/COPYING Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/COPYING.LESSER --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/COPYING.LESSER Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,165 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + + This version of the GNU Lesser General Public License incorporates +the terms and conditions of version 3 of the GNU General Public +License, supplemented by the additional permissions listed below. + + 0. Additional Definitions. + + As used herein, "this License" refers to version 3 of the GNU Lesser +General Public License, and the "GNU GPL" refers to version 3 of the GNU +General Public License. + + "The Library" refers to a covered work governed by this License, +other than an Application or a Combined Work as defined below. + + An "Application" is any work that makes use of an interface provided +by the Library, but which is not otherwise based on the Library. +Defining a subclass of a class defined by the Library is deemed a mode +of using an interface provided by the Library. + + A "Combined Work" is a work produced by combining or linking an +Application with the Library. The particular version of the Library +with which the Combined Work was made is also called the "Linked +Version". + + The "Minimal Corresponding Source" for a Combined Work means the +Corresponding Source for the Combined Work, excluding any source code +for portions of the Combined Work that, considered in isolation, are +based on the Application, and not on the Linked Version. + + The "Corresponding Application Code" for a Combined Work means the +object code and/or source code for the Application, including any data +and utility programs needed for reproducing the Combined Work from the +Application, but excluding the System Libraries of the Combined Work. + + 1. Exception to Section 3 of the GNU GPL. + + You may convey a covered work under sections 3 and 4 of this License +without being bound by section 3 of the GNU GPL. + + 2. Conveying Modified Versions. + + If you modify a copy of the Library, and, in your modifications, a +facility refers to a function or data to be supplied by an Application +that uses the facility (other than as an argument passed when the +facility is invoked), then you may convey a copy of the modified +version: + + a) under this License, provided that you make a good faith effort to + ensure that, in the event an Application does not supply the + function or data, the facility still operates, and performs + whatever part of its purpose remains meaningful, or + + b) under the GNU GPL, with none of the additional permissions of + this License applicable to that copy. + + 3. Object Code Incorporating Material from Library Header Files. + + The object code form of an Application may incorporate material from +a header file that is part of the Library. You may convey such object +code under terms of your choice, provided that, if the incorporated +material is not limited to numerical parameters, data structure +layouts and accessors, or small macros, inline functions and templates +(ten or fewer lines in length), you do both of the following: + + a) Give prominent notice with each copy of the object code that the + Library is used in it and that the Library and its use are + covered by this License. + + b) Accompany the object code with a copy of the GNU GPL and this license + document. + + 4. Combined Works. + + You may convey a Combined Work under terms of your choice that, +taken together, effectively do not restrict modification of the +portions of the Library contained in the Combined Work and reverse +engineering for debugging such modifications, if you also do each of +the following: + + a) Give prominent notice with each copy of the Combined Work that + the Library is used in it and that the Library and its use are + covered by this License. + + b) Accompany the Combined Work with a copy of the GNU GPL and this license + document. + + c) For a Combined Work that displays copyright notices during + execution, include the copyright notice for the Library among + these notices, as well as a reference directing the user to the + copies of the GNU GPL and this license document. + + d) Do one of the following: + + 0) Convey the Minimal Corresponding Source under the terms of this + License, and the Corresponding Application Code in a form + suitable for, and under terms that permit, the user to + recombine or relink the Application with a modified version of + the Linked Version to produce a modified Combined Work, in the + manner specified by section 6 of the GNU GPL for conveying + Corresponding Source. + + 1) Use a suitable shared library mechanism for linking with the + Library. A suitable mechanism is one that (a) uses at run time + a copy of the Library already present on the user's computer + system, and (b) will operate properly with a modified version + of the Library that is interface-compatible with the Linked + Version. + + e) Provide Installation Information, but only if you would otherwise + be required to provide such information under section 6 of the + GNU GPL, and only to the extent that such information is + necessary to install and execute a modified version of the + Combined Work produced by recombining or relinking the + Application with a modified version of the Linked Version. (If + you use option 4d0, the Installation Information must accompany + the Minimal Corresponding Source and Corresponding Application + Code. If you use option 4d1, you must provide the Installation + Information in the manner specified by section 6 of the GNU GPL + for conveying Corresponding Source.) + + 5. Combined Libraries. + + You may place library facilities that are a work based on the +Library side by side in a single library together with other library +facilities that are not Applications and are not covered by this +License, and convey such a combined library under terms of your +choice, if you do both of the following: + + a) Accompany the combined library with a copy of the same work based + on the Library, uncombined with any other library facilities, + conveyed under the terms of this License. + + b) Give prominent notice with the combined library that part of it + is a work based on the Library, and explaining where to find the + accompanying uncombined form of the same work. + + 6. Revised Versions of the GNU Lesser General Public License. + + The Free Software Foundation may publish revised and/or new versions +of the GNU Lesser General Public License from time to time. Such new +versions will be similar in spirit to the present version, but may +differ in detail to address new problems or concerns. + + Each version is given a distinguishing version number. If the +Library as you received it specifies that a certain numbered version +of the GNU Lesser General Public License "or any later version" +applies to it, you have the option of following the terms and +conditions either of that published version or of any later version +published by the Free Software Foundation. If the Library as you +received it does not specify a version number of the GNU Lesser +General Public License, you may choose any version of the GNU Lesser +General Public License ever published by the Free Software Foundation. + + If the Library as you received it specifies that a proxy can decide +whether future versions of the GNU Lesser General Public License shall +apply, that proxy's public statement of acceptance of any version is +permanent authorization for you to choose that version for the +Library. diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/Makefile.in --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/Makefile.in Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,76 @@ +dbg = -g +opt = + +csrc = $(wildcard src/*.c) +obj = $(csrc:.c=.o) +lib_a = libimago.a + +somajor = 2 +sominor = 0 + +incdir = -I$(PREFIX)/include +libdir = -L$(PREFIX)/lib + +ifeq ($(shell uname -s), Darwin) + lib_so = libimago.dylib + shared = -dynamiclib + # add macports and fink dirs to the include and lib paths + incdir += -I/opt/local/include -I/sw/local/include -I/usr/X11R6/include + libdir += -L/opt/local/lib -L/sw/local/lib -L/usr/X11R6/lib +else + soname = libimago.so.$(somajor) + lib_so = $(soname).$(sominor) + solink = libimago.so + shared = -shared -Wl,-soname,$(soname) +endif + +ifeq ($(shell uname -s), IRIX) + # add nekoware and SGI freeware dirs to the include and lib paths + incdir += -I/usr/nekoware/include -I/usr/freeware/include + libdir += -L/usr/nekoware/lib -L/usr/freeware/lib +endif + +CC = gcc +AR = ar +CFLAGS = -pedantic -Wall $(opt) $(dbg) -fPIC -Isrc $(incdir) +LDFLAGS = $(libdir) -lpng -lz -ljpeg -ldl + +.PHONY: all +all: $(lib_a) $(lib_so) + +$(lib_a): $(obj) + $(AR) rcs $@ $^ + +$(lib_so): $(obj) + $(CC) $(CFLAGS) $(shared) -o $@ $^ $(LDFLAGS) + +.PHONY: clean +clean: + rm -f $(obj) + +.PHONY: distclean +distclean: + rm -f $(obj) $(lib_so) $(lib_a) Makefile src/modules.c + +.PHONY: install +install: $(lib_so) $(lib_a) + mkdir -p $(DESTDIR)$(PREFIX)/include $(DESTDIR)$(PREFIX)/lib + cp src/imago2.h $(DESTDIR)$(PREFIX)/include/imago2.h + cp $(lib_so) $(DESTDIR)$(PREFIX)/lib/$(lib_so) + cp $(lib_a) $(DESTDIR)$(PREFIX)/lib/$(lib_a) + [ -n "$(solink)" ] \ + && cd $(DESTDIR)$(PREFIX)/lib \ + && rm -f $(solink) $(soname) \ + && ln -s $(lib_so) $(soname) \ + && ln -s $(soname) $(solink) \ + || true + +.PHONY: uninstall +uninstall: + rm -f $(DESTDIR)$(PREFIX)/include/imago2.h + rm -f $(DESTDIR)$(PREFIX)/lib/$(lib_so) + rm -f $(DESTDIR)$(PREFIX)/lib/$(lib_a) + [ -n "$(solink)" ] \ + && rm -f $(DESTDIR)$(PREFIX)/lib/$(solink) \ + && rm -f $(DESTDIR)$(PREFIX)/lib/$(soname) \ + || true diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/README --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/README Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,8 @@ +imago version 2.0 +----------------- + +Author: John Tsiombikas + +This library is released as free software under the term of the GNU Lesser +General Public License (LGPL) version 3 or any later version published by +the Free Software Foundation. See COPYING and COPYING.LESSER for details. diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/build/vcconfig.bat --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/build/vcconfig.bat Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,14 @@ +@set outfile=src/modules.c + +@echo /* this file is generated by vcconfig.bat, do not edit */ >%outfile% +@echo int img_register_png(); >>%outfile% +@echo int img_register_jpeg(); >>%outfile% +@echo int img_register_ppm(); >>%outfile% +@echo int img_register_rgbe(); >>%outfile% +@echo void img_modules_init(void) >>%outfile% +@echo { >>%outfile% +@echo img_register_png(); >>%outfile% +@echo img_register_jpeg(); >>%outfile% +@echo img_register_ppm(); >>%outfile% +@echo img_register_rgbe(); >>%outfile% +@echo } >>%outfile% diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/configure --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/configure Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,27 @@ +#!/bin/sh + +gen_module_init() +{ + # collect all src/file_whatever.c files + modules=`ls src/file_*.c 2>/dev/null | sort | sed 's/src\/file_//' | sed 's/\.c//'` + + echo "/* this file is generated by $0, do not edit */" + for m in $modules; do + echo "int img_register_$m();" + done + + echo + echo 'void img_modules_init(void)' + echo '{' + + for m in $modules; do + echo " img_register_$m();" + done + + echo '}' +} + +gen_module_init >src/modules.c + +echo 'PREFIX = /usr/local' >Makefile +cat Makefile.in >>Makefile diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/imago-vs2012.sln --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/imago-vs2012.sln Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,26 @@ + +Microsoft Visual Studio Solution File, Format Version 12.00 +# Visual Studio 2012 +Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "imago", "imago-vs2012.vcxproj", "{1FFDD3FB-E37E-4258-8955-5583AF3A0C29}" +EndProject +Global + GlobalSection(SolutionConfigurationPlatforms) = preSolution + Debug|Win32 = Debug|Win32 + Debug|x64 = Debug|x64 + Release|Win32 = Release|Win32 + Release|x64 = Release|x64 + EndGlobalSection + GlobalSection(ProjectConfigurationPlatforms) = postSolution + {1FFDD3FB-E37E-4258-8955-5583AF3A0C29}.Debug|Win32.ActiveCfg = Debug|Win32 + {1FFDD3FB-E37E-4258-8955-5583AF3A0C29}.Debug|Win32.Build.0 = Debug|Win32 + {1FFDD3FB-E37E-4258-8955-5583AF3A0C29}.Debug|x64.ActiveCfg = Debug|x64 + {1FFDD3FB-E37E-4258-8955-5583AF3A0C29}.Debug|x64.Build.0 = Debug|x64 + {1FFDD3FB-E37E-4258-8955-5583AF3A0C29}.Release|Win32.ActiveCfg = Release|Win32 + {1FFDD3FB-E37E-4258-8955-5583AF3A0C29}.Release|Win32.Build.0 = Release|Win32 + {1FFDD3FB-E37E-4258-8955-5583AF3A0C29}.Release|x64.ActiveCfg = Release|x64 + {1FFDD3FB-E37E-4258-8955-5583AF3A0C29}.Release|x64.Build.0 = Release|x64 + EndGlobalSection + GlobalSection(SolutionProperties) = preSolution + HideSolutionNode = FALSE + EndGlobalSection +EndGlobal diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/imago-vs2012.vcxproj --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/imago-vs2012.vcxproj Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,173 @@ + + + + + Debug + Win32 + + + Debug + x64 + + + Release + Win32 + + + Release + x64 + + + + libimago2 + {1FFDD3FB-E37E-4258-8955-5583AF3A0C29} + imago + Win32Proj + + + + StaticLibrary + v110 + Unicode + true + + + StaticLibrary + v100 + Unicode + true + + + StaticLibrary + v110 + Unicode + + + StaticLibrary + v100 + Unicode + + + + + + + + + + + + + + + + + + + <_ProjectFileVersion>11.0.60610.1 + + + $(SolutionDir)$(Configuration)\ + $(Configuration)\ + + + $(ProjectName)-x64 + + + $(SolutionDir)$(Configuration)\ + $(Configuration)\ + + + $(ProjectName)-x64 + + + + $(SolutionDir)\build\vcconfig.bat + + + Disabled + WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions) + true + EnableFastChecks + MultiThreadedDebugDLL + + Level3 + EditAndContinue + 4244;4996;%(DisableSpecificWarnings) + + + + + $(SolutionDir)\build\vcconfig.bat + + + Disabled + WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions) + EnableFastChecks + MultiThreadedDebugDLL + + + Level3 + ProgramDatabase + 4244;4996;%(DisableSpecificWarnings) + + + mkdir $(SolutionDir)\usr\include +mkdir $(SolutionDir)\usr\lib +copy /Y $(SolutionDir)\src\imago2.h $(SolutionDir)\usr\include\ +copy /Y $(TargetPath) $(SolutionDir)\usr\lib\ + + + + + MaxSpeed + true + false + WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions) + MultiThreadedDLL + true + + Level3 + ProgramDatabase + 4244;4996;%(DisableSpecificWarnings) + + + + + MaxSpeed + true + false + WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions) + MultiThreadedDLL + true + + + Level3 + ProgramDatabase + 4244;4996;%(DisableSpecificWarnings) + + + mkdir $(SolutionDir)\usr\include +mkdir $(SolutionDir)\usr\lib +copy /Y $(SolutionDir)\src\imago2.h $(SolutionDir)\usr\include\ +copy /Y $(TargetPath) $(SolutionDir)\usr\lib\ + + + + + + + + + + + + + + + + + + + + \ No newline at end of file diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/imago-vs2012.vcxproj.filters --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/imago-vs2012.vcxproj.filters Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,51 @@ + + + + + {4FC737F1-C7A5-4376-A066-2A32D752A2FF} + cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx + + + {93995380-89BD-4b04-88EB-625FBE52EBFB} + h;hpp;hxx;hm;inl;inc;xsd + + + {67DA6AB6-F800-4c08-8B7A-83BB121AAD01} + rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav + + + + + Source Files + + + Source Files + + + Source Files + + + Source Files + + + Source Files + + + Source Files + + + Source Files + + + Source Files + + + + + Header Files + + + Header Files + + + \ No newline at end of file diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/imago.sln --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/imago.sln Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,20 @@ + +Microsoft Visual Studio Solution File, Format Version 10.00 +# Visual Studio 2008 +Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "imago", "imago.vcproj", "{1FFDD3FB-E37E-4258-8955-5583AF3A0C29}" +EndProject +Global + GlobalSection(SolutionConfigurationPlatforms) = preSolution + Debug|Win32 = Debug|Win32 + Release|Win32 = Release|Win32 + EndGlobalSection + GlobalSection(ProjectConfigurationPlatforms) = postSolution + {1FFDD3FB-E37E-4258-8955-5583AF3A0C29}.Debug|Win32.ActiveCfg = Debug|Win32 + {1FFDD3FB-E37E-4258-8955-5583AF3A0C29}.Debug|Win32.Build.0 = Debug|Win32 + {1FFDD3FB-E37E-4258-8955-5583AF3A0C29}.Release|Win32.ActiveCfg = Release|Win32 + {1FFDD3FB-E37E-4258-8955-5583AF3A0C29}.Release|Win32.Build.0 = Release|Win32 + EndGlobalSection + GlobalSection(SolutionProperties) = preSolution + HideSolutionNode = FALSE + EndGlobalSection +EndGlobal diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/imago.vcproj --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/imago.vcproj Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,211 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/install.bat --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/install.bat Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,5 @@ +mkdir c:\usr\include\ +copy /Y usr\include\* c:\usr\include\ +mkdir c:\usr\lib +copy /Y usr\lib\* c:\usr\lib\ +pause diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/src/conv.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/src/conv.c Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,260 @@ +/* +libimago - a multi-format image file input/output library. +Copyright (C) 2010 John Tsiombikas + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published +by the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with this program. If not, see . +*/ +#include +#include "imago2.h" + +/* pixel-format conversions are sub-optimal at the moment to avoid + * writing a lot of code. optimize at some point ? + */ + +#define CLAMP(x, a, b) ((x) < (a) ? (a) : ((x) > (b) ? (b) : (x))) + +struct pixel { + float r, g, b, a; +}; + +static void unpack_grey8(struct pixel *unp, void *pptr, int count); +static void unpack_rgb24(struct pixel *unp, void *pptr, int count); +static void unpack_rgba32(struct pixel *unp, void *pptr, int count); +static void unpack_greyf(struct pixel *unp, void *pptr, int count); +static void unpack_rgbf(struct pixel *unp, void *pptr, int count); +static void unpack_rgbaf(struct pixel *unp, void *pptr, int count); + +static void pack_grey8(void *pptr, struct pixel *unp, int count); +static void pack_rgb24(void *pptr, struct pixel *unp, int count); +static void pack_rgba32(void *pptr, struct pixel *unp, int count); +static void pack_greyf(void *pptr, struct pixel *unp, int count); +static void pack_rgbf(void *pptr, struct pixel *unp, int count); +static void pack_rgbaf(void *pptr, struct pixel *unp, int count); + +/* XXX keep in sync with enum img_fmt at imago2.h */ +static void (*unpack[])(struct pixel*, void*, int) = { + unpack_grey8, + unpack_rgb24, + unpack_rgba32, + unpack_greyf, + unpack_rgbf, + unpack_rgbaf +}; + +/* XXX keep in sync with enum img_fmt at imago2.h */ +static void (*pack[])(void*, struct pixel*, int) = { + pack_grey8, + pack_rgb24, + pack_rgba32, + pack_greyf, + pack_rgbf, + pack_rgbaf +}; + + +int img_convert(struct img_pixmap *img, enum img_fmt tofmt) +{ + struct pixel pbuf[8]; + int bufsz = (img->width & 7) == 0 ? 8 : ((img->width & 3) == 0 ? 4 : 1); + int i, num_pix = img->width * img->height; + int num_iter = num_pix / bufsz; + char *sptr, *dptr; + struct img_pixmap nimg; + + if(img->fmt == tofmt) { + return 0; /* nothing to do */ + } + + img_init(&nimg); + if(img_set_pixels(&nimg, img->width, img->height, tofmt, 0) == -1) { + img_destroy(&nimg); + return -1; + } + + sptr = img->pixels; + dptr = nimg.pixels; + + for(i=0; ifmt](pbuf, sptr, bufsz); + pack[tofmt](dptr, pbuf, bufsz); + + sptr += bufsz * img->pixelsz; + dptr += bufsz * nimg.pixelsz; + } + + img_copy(img, &nimg); + img_destroy(&nimg); + return 0; +} + +/* the following functions *could* benefit from SIMD */ + +static void unpack_grey8(struct pixel *unp, void *pptr, int count) +{ + int i; + unsigned char *pix = pptr; + + for(i=0; ir = unp->g = unp->b = (float)*pix++ / 255.0; + unp->a = 1.0; + unp++; + } +} + +static void unpack_rgb24(struct pixel *unp, void *pptr, int count) +{ + int i; + unsigned char *pix = pptr; + + for(i=0; ir = (float)*pix++ / 255.0; + unp->g = (float)*pix++ / 255.0; + unp->b = (float)*pix++ / 255.0; + unp->a = 1.0; + unp++; + } +} + +static void unpack_rgba32(struct pixel *unp, void *pptr, int count) +{ + int i; + unsigned char *pix = pptr; + + for(i=0; ir = (float)*pix++ / 255.0; + unp->g = (float)*pix++ / 255.0; + unp->b = (float)*pix++ / 255.0; + unp->a = (float)*pix++ / 255.0; + unp++; + } +} + +static void unpack_greyf(struct pixel *unp, void *pptr, int count) +{ + int i; + float *pix = pptr; + + for(i=0; ir = unp->g = unp->b = *pix++; + unp->a = 1.0; + unp++; + } +} + +static void unpack_rgbf(struct pixel *unp, void *pptr, int count) +{ + int i; + float *pix = pptr; + + for(i=0; ir = *pix++; + unp->g = *pix++; + unp->b = *pix++; + unp->a = 1.0; + unp++; + } +} + +static void unpack_rgbaf(struct pixel *unp, void *pptr, int count) +{ + int i; + float *pix = pptr; + + for(i=0; ir = *pix++; + unp->g = *pix++; + unp->b = *pix++; + unp->a = *pix++; + unp++; + } +} + + +static void pack_grey8(void *pptr, struct pixel *unp, int count) +{ + int i; + unsigned char *pix = pptr; + + for(i=0; ir + unp->g + unp->b) / 3.0); + *pix++ = CLAMP(lum, 0, 255); + unp++; + } +} + +static void pack_rgb24(void *pptr, struct pixel *unp, int count) +{ + int i; + unsigned char *pix = pptr; + + for(i=0; ir * 255.0); + int g = (int)(unp->g * 255.0); + int b = (int)(unp->b * 255.0); + + *pix++ = CLAMP(r, 0, 255); + *pix++ = CLAMP(g, 0, 255); + *pix++ = CLAMP(b, 0, 255); + unp++; + } +} + +static void pack_rgba32(void *pptr, struct pixel *unp, int count) +{ + int i; + unsigned char *pix = pptr; + + for(i=0; ir * 255.0); + int g = (int)(unp->g * 255.0); + int b = (int)(unp->b * 255.0); + int a = (int)(unp->a * 255.0); + + *pix++ = CLAMP(r, 0, 255); + *pix++ = CLAMP(g, 0, 255); + *pix++ = CLAMP(b, 0, 255); + *pix++ = CLAMP(a, 0, 255); + unp++; + } +} + +static void pack_greyf(void *pptr, struct pixel *unp, int count) +{ + int i; + float *pix = pptr; + + for(i=0; ir + unp->g + unp->b) / 3.0; + unp++; + } +} + +static void pack_rgbf(void *pptr, struct pixel *unp, int count) +{ + int i; + float *pix = pptr; + + for(i=0; ir; + *pix++ = unp->g; + *pix++ = unp->b; + unp++; + } +} + +static void pack_rgbaf(void *pptr, struct pixel *unp, int count) +{ + memcpy(pptr, unp, count * sizeof *unp); +} + diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/src/file_jpeg.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/src/file_jpeg.c Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,294 @@ +/* +libimago - a multi-format image file input/output library. +Copyright (C) 2010 John Tsiombikas + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published +by the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with this program. If not, see . +*/ + +/* -- JPEG module -- */ + +#include +#include +#include + +#ifdef WIN32 +#include +#define HAVE_BOOLEAN +#endif + +#include +#include "imago2.h" +#include "ftype_module.h" + +#define INPUT_BUF_SIZE 512 +#define OUTPUT_BUF_SIZE 512 + +/* data source manager: adapted from jdatasrc.c */ +struct src_mgr { + struct jpeg_source_mgr pub; + + struct img_io *io; + unsigned char buffer[INPUT_BUF_SIZE]; + int start_of_file; +}; + +/* data destination manager: adapted from jdatadst.c */ +struct dst_mgr { + struct jpeg_destination_mgr pub; + + struct img_io *io; + unsigned char buffer[OUTPUT_BUF_SIZE]; +}; + +static int check(struct img_io *io); +static int read(struct img_pixmap *img, struct img_io *io); +static int write(struct img_pixmap *img, struct img_io *io); + +/* read source functions */ +static void init_source(j_decompress_ptr jd); +static boolean fill_input_buffer(j_decompress_ptr jd); +static void skip_input_data(j_decompress_ptr jd, long num_bytes); +static void term_source(j_decompress_ptr jd); + +/* write destination functions */ +static void init_destination(j_compress_ptr jc); +static boolean empty_output_buffer(j_compress_ptr jc); +static void term_destination(j_compress_ptr jc); + +int img_register_jpeg(void) +{ + static struct ftype_module mod = {".jpg", check, read, write}; + return img_register_module(&mod); +} + + +static int check(struct img_io *io) +{ + unsigned char sig[10]; + + long pos = io->seek(0, SEEK_CUR, io->uptr); + + if(io->read(sig, 10, io->uptr) < 10) { + io->seek(pos, SEEK_SET, io->uptr); + return -1; + } + + if(memcmp(sig, "\xff\xd8\xff\xe0", 4) != 0 && memcmp(sig, "\xff\xd8\xff\xe1", 4) != 0 + && memcmp(sig + 6, "JFIF", 4) != 0) { + io->seek(pos, SEEK_SET, io->uptr); + return -1; + } + io->seek(pos, SEEK_SET, io->uptr); + return 0; +} + +static int read(struct img_pixmap *img, struct img_io *io) +{ + int i, nlines = 0; + struct jpeg_decompress_struct cinfo; + struct jpeg_error_mgr jerr; + struct src_mgr src; + unsigned char **scanlines; + + io->seek(0, SEEK_CUR, io->uptr); + + cinfo.err = jpeg_std_error(&jerr); /* XXX change... */ + jpeg_create_decompress(&cinfo); + + src.pub.init_source = init_source; + src.pub.fill_input_buffer = fill_input_buffer; + src.pub.skip_input_data = skip_input_data; + src.pub.resync_to_restart = jpeg_resync_to_restart; + src.pub.term_source = term_source; + src.pub.next_input_byte = 0; + src.pub.bytes_in_buffer = 0; + src.io = io; + cinfo.src = (struct jpeg_source_mgr*)&src; + + jpeg_read_header(&cinfo, 1); + cinfo.out_color_space = JCS_RGB; + + if(img_set_pixels(img, cinfo.image_width, cinfo.image_height, IMG_FMT_RGB24, 0) == -1) { + jpeg_destroy_decompress(&cinfo); + return -1; + } + + if(!(scanlines = malloc(img->height * sizeof *scanlines))) { + jpeg_destroy_decompress(&cinfo); + return -1; + } + scanlines[0] = img->pixels; + for(i=1; iheight; i++) { + scanlines[i] = scanlines[i - 1] + img->width * img->pixelsz; + } + + jpeg_start_decompress(&cinfo); + while(nlines < img->height) { + int res = jpeg_read_scanlines(&cinfo, scanlines + nlines, img->height - nlines); + nlines += res; + } + jpeg_finish_decompress(&cinfo); + jpeg_destroy_decompress(&cinfo); + + free(scanlines); + return 0; +} + +static int write(struct img_pixmap *img, struct img_io *io) +{ + int i, nlines = 0; + struct jpeg_compress_struct cinfo; + struct jpeg_error_mgr jerr; + struct dst_mgr dest; + struct img_pixmap tmpimg; + unsigned char **scanlines; + + img_init(&tmpimg); + + if(img->fmt != IMG_FMT_RGB24) { + if(img_copy(&tmpimg, img) == -1) { + return -1; + } + if(img_convert(&tmpimg, IMG_FMT_RGB24) == -1) { + img_destroy(&tmpimg); + return -1; + } + img = &tmpimg; + } + + if(!(scanlines = malloc(img->height * sizeof *scanlines))) { + img_destroy(&tmpimg); + return -1; + } + scanlines[0] = img->pixels; + for(i=1; iheight; i++) { + scanlines[i] = scanlines[i - 1] + img->width * img->pixelsz; + } + + cinfo.err = jpeg_std_error(&jerr); /* XXX */ + jpeg_create_compress(&cinfo); + + dest.pub.init_destination = init_destination; + dest.pub.empty_output_buffer = empty_output_buffer; + dest.pub.term_destination = term_destination; + dest.io = io; + cinfo.dest = (struct jpeg_destination_mgr*)&dest; + + cinfo.image_width = img->width; + cinfo.image_height = img->height; + cinfo.input_components = 3; + cinfo.in_color_space = JCS_RGB; + + jpeg_set_defaults(&cinfo); + + jpeg_start_compress(&cinfo, 1); + while(nlines < img->height) { + int res = jpeg_write_scanlines(&cinfo, scanlines + nlines, img->height - nlines); + nlines += res; + } + jpeg_finish_compress(&cinfo); + jpeg_destroy_compress(&cinfo); + + free(scanlines); + img_destroy(&tmpimg); + return 0; +} + +/* -- read source functions -- + * the following functions are adapted from jdatasrc.c in jpeglib + */ +static void init_source(j_decompress_ptr jd) +{ + struct src_mgr *src = (struct src_mgr*)jd->src; + src->start_of_file = 1; +} + +static boolean fill_input_buffer(j_decompress_ptr jd) +{ + struct src_mgr *src = (struct src_mgr*)jd->src; + size_t nbytes; + + nbytes = src->io->read(src->buffer, INPUT_BUF_SIZE, src->io->uptr); + + if(nbytes <= 0) { + if(src->start_of_file) { + return 0; + } + /* insert a fake EOI marker */ + src->buffer[0] = 0xff; + src->buffer[1] = JPEG_EOI; + nbytes = 2; + } + + src->pub.next_input_byte = src->buffer; + src->pub.bytes_in_buffer = nbytes; + src->start_of_file = 0; + return 1; +} + +static void skip_input_data(j_decompress_ptr jd, long num_bytes) +{ + struct src_mgr *src = (struct src_mgr*)jd->src; + + if(num_bytes > 0) { + while(num_bytes > (long)src->pub.bytes_in_buffer) { + num_bytes -= (long)src->pub.bytes_in_buffer; + fill_input_buffer(jd); + } + src->pub.next_input_byte += (size_t)num_bytes; + src->pub.bytes_in_buffer -= (size_t)num_bytes; + } +} + +static void term_source(j_decompress_ptr jd) +{ + /* nothing to see here, move along */ +} + + +/* -- write destination functions -- + * the following functions are adapted from jdatadst.c in jpeglib + */ +static void init_destination(j_compress_ptr jc) +{ + struct dst_mgr *dest = (struct dst_mgr*)jc->dest; + + dest->pub.next_output_byte = dest->buffer; + dest->pub.free_in_buffer = OUTPUT_BUF_SIZE; +} + +static boolean empty_output_buffer(j_compress_ptr jc) +{ + struct dst_mgr *dest = (struct dst_mgr*)jc->dest; + + if(dest->io->write(dest->buffer, OUTPUT_BUF_SIZE, dest->io->uptr) != OUTPUT_BUF_SIZE) { + return 0; + } + + dest->pub.next_output_byte = dest->buffer; + dest->pub.free_in_buffer = OUTPUT_BUF_SIZE; + return 1; +} + +static void term_destination(j_compress_ptr jc) +{ + struct dst_mgr *dest = (struct dst_mgr*)jc->dest; + size_t datacount = OUTPUT_BUF_SIZE - dest->pub.free_in_buffer; + + /* write any remaining data in the buffer */ + if(datacount > 0) { + dest->io->write(dest->buffer, datacount, dest->io->uptr); + } + /* XXX flush? ... */ +} diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/src/file_png.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/src/file_png.c Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,261 @@ +/* +libimago - a multi-format image file input/output library. +Copyright (C) 2010 John Tsiombikas + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published +by the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with this program. If not, see . +*/ + +/* -- PNG module -- */ + +#include +#include +#include "imago2.h" +#include "ftype_module.h" + +static int check_file(struct img_io *io); +static int read_file(struct img_pixmap *img, struct img_io *io); +static int write_file(struct img_pixmap *img, struct img_io *io); + +static void read_func(png_struct *png, unsigned char *data, size_t len); +static void write_func(png_struct *png, unsigned char *data, size_t len); +static void flush_func(png_struct *png); + +static int png_type_to_fmt(int color_type, int channel_bits); +static int fmt_to_png_type(enum img_fmt fmt); + + +int img_register_png(void) +{ + static struct ftype_module mod = {".png", check_file, read_file, write_file}; + return img_register_module(&mod); +} + +static int check_file(struct img_io *io) +{ + unsigned char sig[8]; + int res; + long pos = io->seek(0, SEEK_CUR, io->uptr); + + if(io->read(sig, 8, io->uptr) < 8) { + io->seek(pos, SEEK_SET, io->uptr); + return -1; + } + + res = png_sig_cmp(sig, 0, 8) == 0 ? 0 : -1; + io->seek(pos, SEEK_SET, io->uptr); + return res; +} + +static int read_file(struct img_pixmap *img, struct img_io *io) +{ + png_struct *png; + png_info *info; + int channel_bits, color_type, ilace_type, compression, filtering, fmt; + png_uint_32 xsz, ysz; + + if(!(png = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0))) { + return -1; + } + + if(!(info = png_create_info_struct(png))) { + png_destroy_read_struct(&png, 0, 0); + return -1; + } + + if(setjmp(png_jmpbuf(png))) { + png_destroy_read_struct(&png, &info, 0); + return -1; + } + + png_set_read_fn(png, io, read_func); + png_set_sig_bytes(png, 0); + png_read_png(png, info, 0, 0); + + png_get_IHDR(png, info, &xsz, &ysz, &channel_bits, &color_type, &ilace_type, + &compression, &filtering); + if((fmt = png_type_to_fmt(color_type, channel_bits)) == -1) { + png_destroy_read_struct(&png, &info, 0); + return -1; + } + + if(img_set_pixels(img, xsz, ysz, fmt, 0) == -1) { + png_destroy_read_struct(&png, &info, 0); + return -1; + } + + + if(channel_bits == 8) { + unsigned int i; + unsigned char **lineptr = (unsigned char**)png_get_rows(png, info); + unsigned char *dest = img->pixels; + + for(i=0; ipixelsz); + dest += xsz * img->pixelsz; + } + } else { + unsigned int i, j, num_elem; + unsigned char **lineptr = (unsigned char**)png_get_rows(png, info); + float *dest = img->pixels; + + num_elem = img->pixelsz / sizeof(float); + for(i=0; ifmt); + png_set_IHDR(png, info, img->width, img->height, 8, coltype, PNG_INTERLACE_NONE, + PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); + png_set_text(png, info, &txt, 1); + + if(!(rows = malloc(img->height * sizeof *rows))) { + png_destroy_write_struct(&png, &info); + img_destroy(&tmpimg); + return -1; + } + + pixptr = img->pixels; + for(i=0; iheight; i++) { + rows[i] = pixptr; + pixptr += img->width * img->pixelsz; + } + png_set_rows(png, info, rows); + + png_write_png(png, info, 0, 0); + png_write_end(png, info); + png_destroy_write_struct(&png, &info); + + free(rows); + + img_destroy(&tmpimg); + return 0; +} + +static void read_func(png_struct *png, unsigned char *data, size_t len) +{ + struct img_io *io = (struct img_io*)png_get_io_ptr(png); + + if(io->read(data, len, io->uptr) == -1) { + longjmp(png_jmpbuf(png), 1); + } +} + +static void write_func(png_struct *png, unsigned char *data, size_t len) +{ + struct img_io *io = (struct img_io*)png_get_io_ptr(png); + + if(io->write(data, len, io->uptr) == -1) { + longjmp(png_jmpbuf(png), 1); + } +} + +static void flush_func(png_struct *png) +{ + /* XXX does it matter that we can't flush? */ +} + +static int png_type_to_fmt(int color_type, int channel_bits) +{ + /* only 8 and 16 bits per channel ar supported at the moment */ + if(channel_bits != 8 && channel_bits != 16) { + return -1; + } + + switch(color_type) { + case PNG_COLOR_TYPE_RGB: + return channel_bits == 16 ? IMG_FMT_RGBF : IMG_FMT_RGB24; + + case PNG_COLOR_TYPE_RGB_ALPHA: + return channel_bits == 16 ? IMG_FMT_RGBAF : IMG_FMT_RGBA32; + + case PNG_COLOR_TYPE_GRAY: + return channel_bits == 16 ? IMG_FMT_GREYF : IMG_FMT_GREY8; + + default: + break; + } + return -1; +} + +static int fmt_to_png_type(enum img_fmt fmt) +{ + switch(fmt) { + case IMG_FMT_GREY8: + return PNG_COLOR_TYPE_GRAY; + + case IMG_FMT_RGB24: + return PNG_COLOR_TYPE_RGB; + + case IMG_FMT_RGBA32: + return PNG_COLOR_TYPE_RGBA; + + default: + break; + } + return -1; +} diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/src/file_ppm.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/src/file_ppm.c Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,153 @@ +/* +libimago - a multi-format image file input/output library. +Copyright (C) 2010 John Tsiombikas + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published +by the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with this program. If not, see . +*/ + +/* -- Portable Pixmap (PPM) module -- */ + +#include +#include "imago2.h" +#include "ftype_module.h" + +static int check(struct img_io *io); +static int read(struct img_pixmap *img, struct img_io *io); +static int write(struct img_pixmap *img, struct img_io *io); + +int img_register_ppm(void) +{ + static struct ftype_module mod = {".ppm", check, read, write}; + return img_register_module(&mod); +} + + +static int check(struct img_io *io) +{ + char id[2]; + int res = -1; + long pos = io->seek(0, SEEK_CUR, io->uptr); + + if(io->read(id, 2, io->uptr) < 2) { + io->seek(pos, SEEK_SET, io->uptr); + return -1; + } + + if(id[0] == 'P' && (id[1] == '6' || id[1] == '3')) { + res = 0; + } + io->seek(pos, SEEK_SET, io->uptr); + return res; +} + +static int iofgetc(struct img_io *io) +{ + char c; + return io->read(&c, 1, io->uptr) < 1 ? -1 : c; +} + +static char *iofgets(char *buf, int size, struct img_io *io) +{ + int c; + char *ptr = buf; + + while(--size > 0 && (c = iofgetc(io)) != -1) { + *ptr++ = c; + if(c == '\n') break; + } + *ptr = 0; + + return ptr == buf ? 0 : buf; +} + +/* TODO: implement P3 reading */ +static int read(struct img_pixmap *img, struct img_io *io) +{ + char buf[256]; + int xsz, ysz, maxval, got_hdrlines = 1; + + if(!iofgets(buf, sizeof buf, io)) { + return -1; + } + if(!(buf[0] == 'P' && (buf[1] == '6' || buf[1] == '3'))) { + return -1; + } + + while(got_hdrlines < 3 && iofgets(buf, sizeof buf, io)) { + if(buf[0] == '#') continue; + + switch(got_hdrlines) { + case 1: + if(sscanf(buf, "%d %d\n", &xsz, &ysz) < 2) { + return -1; + } + break; + + case 2: + if(sscanf(buf, "%d\n", &maxval) < 1) { + return -1; + } + default: + break; + } + got_hdrlines++; + } + + if(xsz < 1 || ysz < 1 || maxval != 255) { + return -1; + } + + if(img_set_pixels(img, xsz, ysz, IMG_FMT_RGB24, 0) == -1) { + return -1; + } + + if(io->read(img->pixels, xsz * ysz * 3, io->uptr) < (unsigned int)(xsz * ysz * 3)) { + return -1; + } + return 0; +} + +static int write(struct img_pixmap *img, struct img_io *io) +{ + int sz; + char buf[256]; + struct img_pixmap tmpimg; + + img_init(&tmpimg); + + if(img->fmt != IMG_FMT_RGB24) { + if(img_copy(&tmpimg, img) == -1) { + return -1; + } + if(img_convert(&tmpimg, IMG_FMT_RGB24) == -1) { + return -1; + } + img = &tmpimg; + } + + sprintf(buf, "P6\n#written by libimago2\n%d %d\n255\n", img->width, img->height); + if(io->write(buf, strlen(buf), io->uptr) < strlen(buf)) { + img_destroy(&tmpimg); + return -1; + } + + sz = img->width * img->height * 3; + if(io->write(img->pixels, sz, io->uptr) < (unsigned int)sz) { + img_destroy(&tmpimg); + return -1; + } + + img_destroy(&tmpimg); + return 0; +} diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/src/file_rgbe.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/src/file_rgbe.c Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,501 @@ +/* This file contains code to read and write four byte rgbe file format + * developed by Greg Ward. It handles the conversions between rgbe and + * pixels consisting of floats. The data is assumed to be an array of floats. + * By default there are three floats per pixel in the order red, green, blue. + * (RGBE_DATA_??? values control this.) + * + * written by Bruce Walter (bjw@graphics.cornell.edu) 5/26/95 + * based on code written by Greg Ward + * minor modifications by John Tsiombikas (nuclear@member.fsf.org) apr.9 2007 + */ + +#include +#include +#include +#include +#include +#include +#include "imago2.h" +#include "ftype_module.h" + + +typedef struct { + int valid; /* indicate which fields are valid */ + char programtype[16]; /* listed at beginning of file to identify it + * after "#?". defaults to "RGBE" */ + float gamma; /* image has already been gamma corrected with + * given gamma. defaults to 1.0 (no correction) */ + float exposure; /* a value of 1.0 in an image corresponds to + * watts/steradian/m^2. + * defaults to 1.0 */ +} rgbe_header_info; + + +static int check(struct img_io *io); +static int read(struct img_pixmap *img, struct img_io *io); +static int write(struct img_pixmap *img, struct img_io *io); + +static int rgbe_read_header(struct img_io *io, int *width, int *height, rgbe_header_info * info); +static int rgbe_read_pixels_rle(struct img_io *io, float *data, int scanline_width, int num_scanlines); + + +int img_register_rgbe(void) +{ + static struct ftype_module mod = {".rgbe", check, read, write}; + return img_register_module(&mod); +} + + +static int check(struct img_io *io) +{ + int xsz, ysz, res; + long pos = io->seek(0, SEEK_CUR, io->uptr); + + rgbe_header_info hdr; + res = rgbe_read_header(io, &xsz, &ysz, &hdr); + + io->seek(pos, SEEK_SET, io->uptr); + return res; +} + +static int read(struct img_pixmap *img, struct img_io *io) +{ + int xsz, ysz; + rgbe_header_info hdr; + + if(rgbe_read_header(io, &xsz, &ysz, &hdr) == -1) { + return -1; + } + + if(img_set_pixels(img, xsz, ysz, IMG_FMT_RGBF, 0) == -1) { + return -1; + } + if(rgbe_read_pixels_rle(io, img->pixels, xsz, ysz) == -1) { + return -1; + } + return 0; +} + +static int write(struct img_pixmap *img, struct img_io *io) +{ + return -1; /* TODO */ +} + + +static int iofgetc(struct img_io *io) +{ + char c; + return io->read(&c, 1, io->uptr) < 1 ? -1 : c; +} + +static char *iofgets(char *buf, int size, struct img_io *io) +{ + int c; + char *ptr = buf; + + while(--size > 0 && (c = iofgetc(io)) != -1) { + *ptr++ = c; + if(c == '\n') break; + } + *ptr = 0; + + return ptr == buf ? 0 : buf; +} + + +/* flags indicating which fields in an rgbe_header_info are valid */ +#define RGBE_VALID_PROGRAMTYPE 0x01 +#define RGBE_VALID_GAMMA 0x02 +#define RGBE_VALID_EXPOSURE 0x04 + +/* return codes for rgbe routines */ +#define RGBE_RETURN_SUCCESS 0 +#define RGBE_RETURN_FAILURE -1 + + +#if defined(__cplusplus) || defined(GNUC) || __STDC_VERSION >= 199901L +#define INLINE inline +#else +#define INLINE +#endif + +/* offsets to red, green, and blue components in a data (float) pixel */ +#define RGBE_DATA_RED 0 +#define RGBE_DATA_GREEN 1 +#define RGBE_DATA_BLUE 2 + +/* number of floats per pixel */ +#define RGBE_DATA_SIZE 3 + +enum rgbe_error_codes { + rgbe_read_error, + rgbe_write_error, + rgbe_format_error, + rgbe_memory_error +}; + + +/* default error routine. change this to change error handling */ +static int rgbe_error(int rgbe_error_code, char *msg) +{ + switch (rgbe_error_code) { + case rgbe_read_error: + fprintf(stderr, "RGBE read error: %s\n", strerror(errno)); + break; + + case rgbe_write_error: + fprintf(stderr, "RGBE write error: %s\n", strerror(errno)); + break; + + case rgbe_format_error: + fprintf(stderr, "RGBE bad file format: %s\n", msg); + break; + + default: + case rgbe_memory_error: + fprintf(stderr, "RGBE error: %s\n", msg); + } + return RGBE_RETURN_FAILURE; +} + +/* standard conversion from float pixels to rgbe pixels */ +/*static INLINE void float2rgbe(unsigned char rgbe[4], float red, float green, float blue) +{ + float v; + int e; + + v = red; + if(green > v) + v = green; + if(blue > v) + v = blue; + if(v < 1e-32) { + rgbe[0] = rgbe[1] = rgbe[2] = rgbe[3] = 0; + } else { + v = frexp(v, &e) * 256.0 / v; + rgbe[0] = (unsigned char)(red * v); + rgbe[1] = (unsigned char)(green * v); + rgbe[2] = (unsigned char)(blue * v); + rgbe[3] = (unsigned char)(e + 128); + } +}*/ + +/* standard conversion from rgbe to float pixels */ +/* note: Ward uses ldexp(col+0.5,exp-(128+8)). However we wanted pixels */ +/* in the range [0,1] to map back into the range [0,1]. */ +static INLINE void rgbe2float(float *red, float *green, float *blue, unsigned char rgbe[4]) +{ + float f; + + if(rgbe[3]) { /*nonzero pixel */ + f = ldexp(1.0, rgbe[3] - (int)(128 + 8)); + *red = rgbe[0] * f; + *green = rgbe[1] * f; + *blue = rgbe[2] * f; + } else + *red = *green = *blue = 0.0; +} + +#if 0 +/* default minimal header. modify if you want more information in header */ +static int rgbe_write_header(FILE * fp, int width, int height, rgbe_header_info * info) +{ + char *programtype = "RGBE"; + + if(info && (info->valid & RGBE_VALID_PROGRAMTYPE)) + programtype = info->programtype; + if(fprintf(fp, "#?%s\n", programtype) < 0) + return rgbe_error(rgbe_write_error, NULL); + /* The #? is to identify file type, the programtype is optional. */ + if(info && (info->valid & RGBE_VALID_GAMMA)) { + if(fprintf(fp, "GAMMA=%g\n", info->gamma) < 0) + return rgbe_error(rgbe_write_error, NULL); + } + if(info && (info->valid & RGBE_VALID_EXPOSURE)) { + if(fprintf(fp, "EXPOSURE=%g\n", info->exposure) < 0) + return rgbe_error(rgbe_write_error, NULL); + } + if(fprintf(fp, "FORMAT=32-bit_rle_rgbe\n\n") < 0) + return rgbe_error(rgbe_write_error, NULL); + if(fprintf(fp, "-Y %d +X %d\n", height, width) < 0) + return rgbe_error(rgbe_write_error, NULL); + return RGBE_RETURN_SUCCESS; +} +#endif + +/* minimal header reading. modify if you want to parse more information */ +static int rgbe_read_header(struct img_io *io, int *width, int *height, rgbe_header_info * info) +{ + char buf[128]; + float tempf; + int i; + + if(info) { + info->valid = 0; + info->programtype[0] = 0; + info->gamma = info->exposure = 1.0; + } + if(iofgets(buf, sizeof(buf) / sizeof(buf[0]), io) == NULL) + return RGBE_RETURN_FAILURE;/*rgbe_error(rgbe_read_error, NULL);*/ + if((buf[0] != '#') || (buf[1] != '?')) { + /* if you want to require the magic token then uncomment the next line */ + /*return rgbe_error(rgbe_format_error,"bad initial token"); */ + } else if(info) { + info->valid |= RGBE_VALID_PROGRAMTYPE; + for(i = 0; i < sizeof(info->programtype) - 1; i++) { + if((buf[i + 2] == 0) || isspace(buf[i + 2])) + break; + info->programtype[i] = buf[i + 2]; + } + info->programtype[i] = 0; + if(iofgets(buf, sizeof(buf) / sizeof(buf[0]), io) == 0) + return rgbe_error(rgbe_read_error, NULL); + } + for(;;) { + if((buf[0] == 0) || (buf[0] == '\n')) + return RGBE_RETURN_FAILURE;/*rgbe_error(rgbe_format_error, "no FORMAT specifier found");*/ + else if(strcmp(buf, "FORMAT=32-bit_rle_rgbe\n") == 0) + break; /* format found so break out of loop */ + else if(info && (sscanf(buf, "GAMMA=%g", &tempf) == 1)) { + info->gamma = tempf; + info->valid |= RGBE_VALID_GAMMA; + } else if(info && (sscanf(buf, "EXPOSURE=%g", &tempf) == 1)) { + info->exposure = tempf; + info->valid |= RGBE_VALID_EXPOSURE; + } + if(iofgets(buf, sizeof(buf) / sizeof(buf[0]), io) == 0) + return RGBE_RETURN_FAILURE;/*rgbe_error(rgbe_read_error, NULL);*/ + } + if(iofgets(buf, sizeof(buf) / sizeof(buf[0]), io) == 0) + return RGBE_RETURN_FAILURE;/*rgbe_error(rgbe_read_error, NULL);*/ + if(strcmp(buf, "\n") != 0) + return RGBE_RETURN_FAILURE;/*rgbe_error(rgbe_format_error, "missing blank line after FORMAT specifier");*/ + if(iofgets(buf, sizeof(buf) / sizeof(buf[0]), io) == 0) + return RGBE_RETURN_FAILURE;/*rgbe_error(rgbe_read_error, NULL);*/ + if(sscanf(buf, "-Y %d +X %d", height, width) < 2) + return RGBE_RETURN_FAILURE;/*rgbe_error(rgbe_format_error, "missing image size specifier");*/ + return RGBE_RETURN_SUCCESS; +} + +#if 0 +/* simple write routine that does not use run length encoding */ + +/* These routines can be made faster by allocating a larger buffer and + fread-ing and fwrite-ing the data in larger chunks */ +static int rgbe_write_pixels(FILE * fp, float *data, int numpixels) +{ + unsigned char rgbe[4]; + + while(numpixels-- > 0) { + float2rgbe(rgbe, data[RGBE_DATA_RED], data[RGBE_DATA_GREEN], data[RGBE_DATA_BLUE]); + data += RGBE_DATA_SIZE; + if(fwrite(rgbe, sizeof(rgbe), 1, fp) < 1) + return rgbe_error(rgbe_write_error, NULL); + } + return RGBE_RETURN_SUCCESS; +} +#endif + +/* simple read routine. will not correctly handle run length encoding */ +static int rgbe_read_pixels(struct img_io *io, float *data, int numpixels) +{ + unsigned char rgbe[4]; + + while(numpixels-- > 0) { + if(io->read(rgbe, sizeof(rgbe), io->uptr) < 1) + return rgbe_error(rgbe_read_error, NULL); + rgbe2float(&data[RGBE_DATA_RED], &data[RGBE_DATA_GREEN], &data[RGBE_DATA_BLUE], rgbe); + data += RGBE_DATA_SIZE; + } + return RGBE_RETURN_SUCCESS; +} + +#if 0 +/* The code below is only needed for the run-length encoded files. */ + +/* Run length encoding adds considerable complexity but does */ + +/* save some space. For each scanline, each channel (r,g,b,e) is */ + +/* encoded separately for better compression. */ + +static int rgbe_write_bytes_rle(struct img_io *io, unsigned char *data, int numbytes) +{ +#define MINRUNLENGTH 4 + int cur, beg_run, run_count, old_run_count, nonrun_count; + unsigned char buf[2]; + + cur = 0; + while(cur < numbytes) { + beg_run = cur; + /* find next run of length at least 4 if one exists */ + run_count = old_run_count = 0; + while((run_count < MINRUNLENGTH) && (beg_run < numbytes)) { + beg_run += run_count; + old_run_count = run_count; + run_count = 1; + while((beg_run + run_count < numbytes) && (run_count < 127) + && (data[beg_run] == data[beg_run + run_count])) + run_count++; + } + /* if data before next big run is a short run then write it as such */ + if((old_run_count > 1) && (old_run_count == beg_run - cur)) { + buf[0] = 128 + old_run_count; /*write short run */ + buf[1] = data[cur]; + if(fwrite(buf, sizeof(buf[0]) * 2, 1, fp) < 1) + return rgbe_error(rgbe_write_error, NULL); + cur = beg_run; + } + /* write out bytes until we reach the start of the next run */ + while(cur < beg_run) { + nonrun_count = beg_run - cur; + if(nonrun_count > 128) + nonrun_count = 128; + buf[0] = nonrun_count; + if(fwrite(buf, sizeof(buf[0]), 1, fp) < 1) + return rgbe_error(rgbe_write_error, NULL); + if(fwrite(&data[cur], sizeof(data[0]) * nonrun_count, 1, fp) < 1) + return rgbe_error(rgbe_write_error, NULL); + cur += nonrun_count; + } + /* write out next run if one was found */ + if(run_count >= MINRUNLENGTH) { + buf[0] = 128 + run_count; + buf[1] = data[beg_run]; + if(fwrite(buf, sizeof(buf[0]) * 2, 1, fp) < 1) + return rgbe_error(rgbe_write_error, NULL); + cur += run_count; + } + } + return RGBE_RETURN_SUCCESS; +#undef MINRUNLENGTH +} + +static int rgbe_write_pixels_rle(struct img_io *io, float *data, int scanline_width, int num_scanlines) +{ + unsigned char rgbe[4]; + unsigned char *buffer; + int i, err; + + if((scanline_width < 8) || (scanline_width > 0x7fff)) + /* run length encoding is not allowed so write flat */ + return rgbe_write_pixels(io, data, scanline_width * num_scanlines); + buffer = (unsigned char *)malloc(sizeof(unsigned char) * 4 * scanline_width); + if(buffer == NULL) + /* no buffer space so write flat */ + return rgbe_write_pixels(fp, data, scanline_width * num_scanlines); + while(num_scanlines-- > 0) { + rgbe[0] = 2; + rgbe[1] = 2; + rgbe[2] = scanline_width >> 8; + rgbe[3] = scanline_width & 0xFF; + if(fwrite(rgbe, sizeof(rgbe), 1, fp) < 1) { + free(buffer); + return rgbe_error(rgbe_write_error, NULL); + } + for(i = 0; i < scanline_width; i++) { + float2rgbe(rgbe, data[RGBE_DATA_RED], data[RGBE_DATA_GREEN], data[RGBE_DATA_BLUE]); + buffer[i] = rgbe[0]; + buffer[i + scanline_width] = rgbe[1]; + buffer[i + 2 * scanline_width] = rgbe[2]; + buffer[i + 3 * scanline_width] = rgbe[3]; + data += RGBE_DATA_SIZE; + } + /* write out each of the four channels separately run length encoded */ + /* first red, then green, then blue, then exponent */ + for(i = 0; i < 4; i++) { + if((err = rgbe_write_bytes_rle(fp, &buffer[i * scanline_width], + scanline_width)) != RGBE_RETURN_SUCCESS) { + free(buffer); + return err; + } + } + } + free(buffer); + return RGBE_RETURN_SUCCESS; +} +#endif + +static int rgbe_read_pixels_rle(struct img_io *io, float *data, int scanline_width, int num_scanlines) +{ + unsigned char rgbe[4], *scanline_buffer, *ptr, *ptr_end; + int i, count; + unsigned char buf[2]; + + if((scanline_width < 8) || (scanline_width > 0x7fff)) + /* run length encoding is not allowed so read flat */ + return rgbe_read_pixels(io, data, scanline_width * num_scanlines); + scanline_buffer = NULL; + /* read in each successive scanline */ + while(num_scanlines > 0) { + if(io->read(rgbe, sizeof(rgbe), io->uptr) < 1) { + free(scanline_buffer); + return rgbe_error(rgbe_read_error, NULL); + } + if((rgbe[0] != 2) || (rgbe[1] != 2) || (rgbe[2] & 0x80)) { + /* this file is not run length encoded */ + rgbe2float(&data[0], &data[1], &data[2], rgbe); + data += RGBE_DATA_SIZE; + free(scanline_buffer); + return rgbe_read_pixels(io, data, scanline_width * num_scanlines - 1); + } + if((((int)rgbe[2]) << 8 | rgbe[3]) != scanline_width) { + free(scanline_buffer); + return rgbe_error(rgbe_format_error, "wrong scanline width"); + } + if(scanline_buffer == NULL) + scanline_buffer = (unsigned char *) + malloc(sizeof(unsigned char) * 4 * scanline_width); + if(scanline_buffer == NULL) + return rgbe_error(rgbe_memory_error, "unable to allocate buffer space"); + + ptr = &scanline_buffer[0]; + /* read each of the four channels for the scanline into the buffer */ + for(i = 0; i < 4; i++) { + ptr_end = &scanline_buffer[(i + 1) * scanline_width]; + while(ptr < ptr_end) { + if(io->read(buf, sizeof(buf[0]) * 2, io->uptr) < 1) { + free(scanline_buffer); + return rgbe_error(rgbe_read_error, NULL); + } + if(buf[0] > 128) { + /* a run of the same value */ + count = buf[0] - 128; + if((count == 0) || (count > ptr_end - ptr)) { + free(scanline_buffer); + return rgbe_error(rgbe_format_error, "bad scanline data"); + } + while(count-- > 0) + *ptr++ = buf[1]; + } else { + /* a non-run */ + count = buf[0]; + if((count == 0) || (count > ptr_end - ptr)) { + free(scanline_buffer); + return rgbe_error(rgbe_format_error, "bad scanline data"); + } + *ptr++ = buf[1]; + if(--count > 0) { + if(io->read(ptr, sizeof(*ptr) * count, io->uptr) < 1) { + free(scanline_buffer); + return rgbe_error(rgbe_read_error, NULL); + } + ptr += count; + } + } + } + } + /* now convert data from buffer into floats */ + for(i = 0; i < scanline_width; i++) { + rgbe[0] = scanline_buffer[i]; + rgbe[1] = scanline_buffer[i + scanline_width]; + rgbe[2] = scanline_buffer[i + 2 * scanline_width]; + rgbe[3] = scanline_buffer[i + 3 * scanline_width]; + rgbe2float(&data[RGBE_DATA_RED], &data[RGBE_DATA_GREEN], &data[RGBE_DATA_BLUE], rgbe); + data += RGBE_DATA_SIZE; + } + num_scanlines--; + } + free(scanline_buffer); + return RGBE_RETURN_SUCCESS; +} diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/src/ftype_module.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/src/ftype_module.c Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,118 @@ +/* +libimago - a multi-format image file input/output library. +Copyright (C) 2010 John Tsiombikas + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published +by the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with this program. If not, see . +*/ + +#include +#include +#include "ftype_module.h" + +static struct list_node { + struct ftype_module *module; + struct list_node *next; +} *modules; + +/* defined in modules.c which is generated by configure */ +void img_modules_init(); + +static int done_init; + +int img_register_module(struct ftype_module *mod) +{ + struct list_node *node; + + if(!(node = malloc(sizeof *node))) { + return -1; + } + + node->module = mod; + node->next = modules; + modules = node; + return 0; +} + +struct ftype_module *img_find_format_module(struct img_io *io) +{ + struct list_node *node; + + if(!done_init) { + img_modules_init(); + done_init = 1; + } + + node = modules; + while(node) { + if(node->module->check(io) != -1) { + return node->module; + } + node = node->next; + } + return 0; +} + +struct ftype_module *img_guess_format(const char *fname) +{ + struct list_node *node; + char *suffix; + int suffix_len; + + if(!done_init) { + img_modules_init(); + done_init = 1; + } + + if(!(suffix = strrchr(fname, '.'))) { + return 0; /* no suffix, can't guess ... */ + } + suffix_len = (int)strlen(suffix); + + node = modules; + while(node) { + char *suflist = node->module->suffix; + char *start, *end; + + while(*suflist) { + if(!(start = strstr(suflist, suffix))) { + break; + } + end = start + suffix_len; + + if(*end == ':' || *end == 0) { + return node->module; /* found it */ + } + suflist = end; + } + + node = node->next; + } + return 0; +} + +struct ftype_module *img_get_module(int idx) +{ + struct list_node *node; + + if(!done_init) { + img_modules_init(); + done_init = 1; + } + + node = modules; + while(node && idx--) { + node = node->next; + } + return node->module; +} diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/src/ftype_module.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/src/ftype_module.h Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,39 @@ +/* +libimago - a multi-format image file input/output library. +Copyright (C) 2010 John Tsiombikas + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published +by the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with this program. If not, see . +*/ + +#ifndef FTYPE_MODULE_H_ +#define FTYPE_MODULE_H_ + +#include "imago2.h" + +struct ftype_module { + char *suffix; /* used for format autodetection during saving only */ + + int (*check)(struct img_io *io); + int (*read)(struct img_pixmap *img, struct img_io *io); + int (*write)(struct img_pixmap *img, struct img_io *io); +}; + +int img_register_module(struct ftype_module *mod); + +struct ftype_module *img_find_format_module(struct img_io *io); +struct ftype_module *img_guess_format(const char *fname); +struct ftype_module *img_get_module(int idx); + + +#endif /* FTYPE_MODULE_H_ */ diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/src/imago2.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/src/imago2.c Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,449 @@ +/* +libimago - a multi-format image file input/output library. +Copyright (C) 2010 John Tsiombikas + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published +by the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with this program. If not, see . +*/ + +#include +#include +#include +#include "imago2.h" +#include "ftype_module.h" + +static int pixel_size(enum img_fmt fmt); +static size_t def_read(void *buf, size_t bytes, void *uptr); +static size_t def_write(void *buf, size_t bytes, void *uptr); +static long def_seek(long offset, int whence, void *uptr); + + +void img_init(struct img_pixmap *img) +{ + img->pixels = 0; + img->width = img->height = 0; + img->fmt = IMG_FMT_RGBA32; + img->pixelsz = pixel_size(img->fmt); + img->name = 0; +} + + +void img_destroy(struct img_pixmap *img) +{ + free(img->pixels); + img->pixels = 0; /* just in case... */ + img->width = img->height = 0xbadbeef; + free(img->name); +} + +struct img_pixmap *img_create(void) +{ + struct img_pixmap *p; + + if(!(p = malloc(sizeof *p))) { + return 0; + } + img_init(p); + return p; +} + +void img_free(struct img_pixmap *img) +{ + img_destroy(img); + free(img); +} + +int img_set_name(struct img_pixmap *img, const char *name) +{ + char *tmp; + + if(!(tmp = malloc(strlen(name) + 1))) { + return -1; + } + strcpy(tmp, name); + img->name = tmp; + return 0; +} + +int img_set_format(struct img_pixmap *img, enum img_fmt fmt) +{ + if(img->pixels) { + return img_convert(img, fmt); + } + img->fmt = fmt; + return 0; +} + +int img_copy(struct img_pixmap *dest, struct img_pixmap *src) +{ + return img_set_pixels(dest, src->width, src->height, src->fmt, src->pixels); +} + +int img_set_pixels(struct img_pixmap *img, int w, int h, enum img_fmt fmt, void *pix) +{ + void *newpix; + int pixsz = pixel_size(fmt); + + if(!(newpix = malloc(w * h * pixsz))) { + return -1; + } + + if(pix) { + memcpy(newpix, pix, w * h * pixsz); + } else { + memset(newpix, 0, w * h * pixsz); + } + + free(img->pixels); + img->pixels = newpix; + img->width = w; + img->height = h; + img->pixelsz = pixsz; + img->fmt = fmt; + return 0; +} + +void *img_load_pixels(const char *fname, int *xsz, int *ysz, enum img_fmt fmt) +{ + struct img_pixmap img; + + img_init(&img); + + if(img_load(&img, fname) == -1) { + return 0; + } + if(img.fmt != fmt) { + if(img_convert(&img, fmt) == -1) { + img_destroy(&img); + return 0; + } + } + + *xsz = img.width; + *ysz = img.height; + return img.pixels; +} + +int img_save_pixels(const char *fname, void *pix, int xsz, int ysz, enum img_fmt fmt) +{ + struct img_pixmap img; + + img_init(&img); + img.fmt = fmt; + img.name = (char*)fname; + img.width = xsz; + img.height = ysz; + img.pixels = pix; + + return img_save(&img, fname); +} + +void img_free_pixels(void *pix) +{ + free(pix); +} + +int img_load(struct img_pixmap *img, const char *fname) +{ + int res; + FILE *fp; + + if(!(fp = fopen(fname, "rb"))) { + return -1; + } + res = img_read_file(img, fp); + fclose(fp); + return res; +} + +/* TODO implement filetype selection */ +int img_save(struct img_pixmap *img, const char *fname) +{ + int res; + FILE *fp; + + img_set_name(img, fname); + + if(!(fp = fopen(fname, "wb"))) { + return -1; + } + res = img_write_file(img, fp); + fclose(fp); + return res; +} + +int img_read_file(struct img_pixmap *img, FILE *fp) +{ + struct img_io io = {0, def_read, def_write, def_seek}; + + io.uptr = fp; + return img_read(img, &io); +} + +int img_write_file(struct img_pixmap *img, FILE *fp) +{ + struct img_io io = {0, def_read, def_write, def_seek}; + + io.uptr = fp; + return img_write(img, &io); +} + +int img_read(struct img_pixmap *img, struct img_io *io) +{ + struct ftype_module *mod; + + if((mod = img_find_format_module(io))) { + return mod->read(img, io); + } + return -1; +} + +int img_write(struct img_pixmap *img, struct img_io *io) +{ + struct ftype_module *mod; + + if(!img->name || !(mod = img_guess_format(img->name))) { + /* TODO throw some sort of warning? */ + /* TODO implement some sort of module priority or let the user specify? */ + if(!(mod = img_get_module(0))) { + return -1; + } + } + + return mod->write(img, io); +} + +int img_to_float(struct img_pixmap *img) +{ + enum img_fmt targ_fmt; + + switch(img->fmt) { + case IMG_FMT_GREY8: + targ_fmt = IMG_FMT_GREYF; + break; + + case IMG_FMT_RGB24: + targ_fmt = IMG_FMT_RGBF; + break; + + case IMG_FMT_RGBA32: + targ_fmt = IMG_FMT_RGBAF; + break; + + default: + return 0; /* already float */ + } + + return img_convert(img, targ_fmt); +} + +int img_to_integer(struct img_pixmap *img) +{ + enum img_fmt targ_fmt; + + switch(img->fmt) { + case IMG_FMT_GREYF: + targ_fmt = IMG_FMT_GREY8; + break; + + case IMG_FMT_RGBF: + targ_fmt = IMG_FMT_RGB24; + break; + + case IMG_FMT_RGBAF: + targ_fmt = IMG_FMT_RGBA32; + break; + + default: + return 0; /* already integer */ + } + + return img_convert(img, targ_fmt); +} + +int img_is_float(struct img_pixmap *img) +{ + return img->fmt >= IMG_FMT_GREYF && img->fmt <= IMG_FMT_RGBAF; +} + +int img_has_alpha(struct img_pixmap *img) +{ + if(img->fmt == IMG_FMT_RGBA32 || img->fmt == IMG_FMT_RGBAF) { + return 1; + } + return 0; +} + + +void img_setpixel(struct img_pixmap *img, int x, int y, void *pixel) +{ + char *dest = (char*)img->pixels + (y * img->width + x) * img->pixelsz; + memcpy(dest, pixel, img->pixelsz); +} + +void img_getpixel(struct img_pixmap *img, int x, int y, void *pixel) +{ + char *dest = (char*)img->pixels + (y * img->width + x) * img->pixelsz; + memcpy(pixel, dest, img->pixelsz); +} + +void img_setpixel1i(struct img_pixmap *img, int x, int y, int pix) +{ + img_setpixel4i(img, x, y, pix, pix, pix, pix); +} + +void img_setpixel1f(struct img_pixmap *img, int x, int y, float pix) +{ + img_setpixel4f(img, x, y, pix, pix, pix, pix); +} + +void img_setpixel4i(struct img_pixmap *img, int x, int y, int r, int g, int b, int a) +{ + if(img_is_float(img)) { + img_setpixel4f(img, x, y, r / 255.0, g / 255.0, b / 255.0, a / 255.0); + } else { + unsigned char pixel[4]; + pixel[0] = r; + pixel[1] = g; + pixel[2] = b; + pixel[3] = a; + + img_setpixel(img, x, y, pixel); + } +} + +void img_setpixel4f(struct img_pixmap *img, int x, int y, float r, float g, float b, float a) +{ + if(img_is_float(img)) { + float pixel[4]; + pixel[0] = r; + pixel[1] = g; + pixel[2] = b; + pixel[3] = a; + + img_setpixel(img, x, y, pixel); + } else { + img_setpixel4i(img, x, y, (int)(r * 255.0), (int)(g * 255.0), (int)(b * 255.0), (int)(a * 255.0)); + } +} + +void img_getpixel1i(struct img_pixmap *img, int x, int y, int *pix) +{ + int junk[3]; + img_getpixel4i(img, x, y, pix, junk, junk + 1, junk + 2); +} + +void img_getpixel1f(struct img_pixmap *img, int x, int y, float *pix) +{ + float junk[3]; + img_getpixel4f(img, x, y, pix, junk, junk + 1, junk + 2); +} + +void img_getpixel4i(struct img_pixmap *img, int x, int y, int *r, int *g, int *b, int *a) +{ + if(img_is_float(img)) { + float pixel[4] = {0, 0, 0, 0}; + img_getpixel(img, x, y, pixel); + *r = pixel[0] * 255.0; + *g = pixel[1] * 255.0; + *b = pixel[2] * 255.0; + *a = pixel[3] * 255.0; + } else { + unsigned char pixel[4]; + img_getpixel(img, x, y, pixel); + *r = pixel[0]; + *g = pixel[1]; + *b = pixel[2]; + *a = pixel[3]; + } +} + +void img_getpixel4f(struct img_pixmap *img, int x, int y, float *r, float *g, float *b, float *a) +{ + if(img_is_float(img)) { + float pixel[4] = {0, 0, 0, 0}; + img_getpixel(img, x, y, pixel); + *r = pixel[0]; + *g = pixel[1]; + *b = pixel[2]; + *a = pixel[3]; + } else { + unsigned char pixel[4]; + img_getpixel(img, x, y, pixel); + *r = pixel[0] / 255.0; + *g = pixel[1] / 255.0; + *b = pixel[2] / 255.0; + *a = pixel[3] / 255.0; + } +} + +void img_io_set_user_data(struct img_io *io, void *uptr) +{ + io->uptr = uptr; +} + +void img_io_set_read_func(struct img_io *io, size_t (*read)(void*, size_t, void*)) +{ + io->read = read; +} + +void img_io_set_write_func(struct img_io *io, size_t (*write)(void*, size_t, void*)) +{ + io->write = write; +} + +void img_io_set_seek_func(struct img_io *io, long (*seek)(long, int, void*)) +{ + io->seek = seek; +} + + +static int pixel_size(enum img_fmt fmt) +{ + switch(fmt) { + case IMG_FMT_GREY8: + return 1; + case IMG_FMT_RGB24: + return 3; + case IMG_FMT_RGBA32: + return 4; + case IMG_FMT_GREYF: + return sizeof(float); + case IMG_FMT_RGBF: + return 3 * sizeof(float); + case IMG_FMT_RGBAF: + return 4 * sizeof(float); + default: + break; + } + return 0; +} + +static size_t def_read(void *buf, size_t bytes, void *uptr) +{ + return uptr ? fread(buf, 1, bytes, uptr) : 0; +} + +static size_t def_write(void *buf, size_t bytes, void *uptr) +{ + return uptr ? fwrite(buf, 1, bytes, uptr) : 0; +} + +static long def_seek(long offset, int whence, void *uptr) +{ + if(!uptr || fseek(uptr, offset, whence) == -1) { + return -1; + } + return ftell(uptr); +} + diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/src/imago2.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/src/imago2.h Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,222 @@ +/* +libimago - a multi-format image file input/output library. +Copyright (C) 2010-2012 John Tsiombikas + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published +by the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with this program. If not, see . +*/ + +#ifndef IMAGO2_H_ +#define IMAGO2_H_ + +#include + +#ifdef __cplusplus +#define IMG_OPTARG(arg, val) arg = val +#else +#define IMG_OPTARG(arg, val) arg +#endif + +/* XXX if you change this make sure to also change pack/unpack arrays in conv.c */ +enum img_fmt { + IMG_FMT_GREY8, + IMG_FMT_RGB24, + IMG_FMT_RGBA32, + IMG_FMT_GREYF, + IMG_FMT_RGBF, + IMG_FMT_RGBAF, + + NUM_IMG_FMT +}; + +struct img_pixmap { + void *pixels; + int width, height; + enum img_fmt fmt; + int pixelsz; + char *name; +}; + +struct img_io { + void *uptr; /* user-data */ + + size_t (*read)(void *buf, size_t bytes, void *uptr); + size_t (*write)(void *buf, size_t bytes, void *uptr); + long (*seek)(long offs, int whence, void *uptr); +}; + +#ifdef __cplusplus +extern "C" { +#endif + +/* initialize the img_pixmap structure */ +void img_init(struct img_pixmap *img); +/* destroys the img_pixmap structure, freeing the pixel buffer (if available) + * and any other memory held by the pixmap. + */ +void img_destroy(struct img_pixmap *img); + +/* convenience function that allocates an img_pixmap struct and then initializes it. + * returns null if the malloc fails. + */ +struct img_pixmap *img_create(void); +/* frees a pixmap previously allocated with img_create (free followed by img_destroy) */ +void img_free(struct img_pixmap *img); + +int img_set_name(struct img_pixmap *img, const char *name); + +/* set the image pixel format */ +int img_set_format(struct img_pixmap *img, enum img_fmt fmt); + +/* copies one pixmap to another. + * equivalent to: img_set_pixels(dest, src->width, src->height, src->fmt, src->pixels) + */ +int img_copy(struct img_pixmap *dest, struct img_pixmap *src); + +/* allocates a pixel buffer of the specified dimensions and format, and copies the + * pixels given through the pix pointer into it. + * the pix pointer can be null, in which case there's no copy, just allocation. + * + * C++: fmt and pix have default parameters IMG_FMT_RGBA32 and null respectively. + */ +int img_set_pixels(struct img_pixmap *img, int w, int h, IMG_OPTARG(enum img_fmt fmt, IMG_FMT_RGBA32), IMG_OPTARG(void *pix, 0)); + +/* Simplified image loading + * Loads the specified file, and returns a pointer to an array of pixels of the + * requested pixel format. The width and height of the image are returned through + * the xsz and ysz pointers. + * If the image cannot be loaded, the function returns null. + * + * C++: the format argument is optional and defaults to IMG_FMT_RGBA32 + */ +void *img_load_pixels(const char *fname, int *xsz, int *ysz, IMG_OPTARG(enum img_fmt fmt, IMG_FMT_RGBA32)); + +/* Simplified image saving + * Reads an array of pixels supplied through the pix pointer, of dimensions xsz + * and ysz, and pixel-format fmt, and saves it to a file. + * The output filetype is guessed by the filename suffix. + * + * C++: the format argument is optional and defaults to IMG_FMT_RGBA32 + */ +int img_save_pixels(const char *fname, void *pix, int xsz, int ysz, IMG_OPTARG(enum img_fmt fmt, IMG_FMT_RGBA32)); + +/* Frees the memory allocated by img_load_pixels */ +void img_free_pixels(void *pix); + +/* Loads an image file into the supplied pixmap */ +int img_load(struct img_pixmap *img, const char *fname); +/* Saves the supplied pixmap to a file. The output filetype is guessed by the filename suffix */ +int img_save(struct img_pixmap *img, const char *fname); + +/* Reads an image from an open FILE* into the supplied pixmap */ +int img_read_file(struct img_pixmap *img, FILE *fp); +/* Writes the supplied pixmap to an open FILE* */ +int img_write_file(struct img_pixmap *img, FILE *fp); + +/* Reads an image using user-defined file-i/o functions (see img_io_set_*) */ +int img_read(struct img_pixmap *img, struct img_io *io); +/* Writes an image using user-defined file-i/o functions (see img_io_set_*) */ +int img_write(struct img_pixmap *img, struct img_io *io); + +/* Converts an image to the specified pixel format */ +int img_convert(struct img_pixmap *img, enum img_fmt tofmt); + +/* Converts an image from an integer pixel format to the corresponding floating point one */ +int img_to_float(struct img_pixmap *img); +/* Converts an image from a floating point pixel format to the corresponding integer one */ +int img_to_integer(struct img_pixmap *img); + +/* Returns non-zero (true) if the supplied image is in a floating point pixel format */ +int img_is_float(struct img_pixmap *img); +/* Returns non-zero (true) if the supplied image has an alpha channel */ +int img_has_alpha(struct img_pixmap *img); + + +/* don't use these for anything performance-critical */ +void img_setpixel(struct img_pixmap *img, int x, int y, void *pixel); +void img_getpixel(struct img_pixmap *img, int x, int y, void *pixel); + +void img_setpixel1i(struct img_pixmap *img, int x, int y, int pix); +void img_setpixel1f(struct img_pixmap *img, int x, int y, float pix); +void img_setpixel4i(struct img_pixmap *img, int x, int y, int r, int g, int b, int a); +void img_setpixel4f(struct img_pixmap *img, int x, int y, float r, float g, float b, float a); + +void img_getpixel1i(struct img_pixmap *img, int x, int y, int *pix); +void img_getpixel1f(struct img_pixmap *img, int x, int y, float *pix); +void img_getpixel4i(struct img_pixmap *img, int x, int y, int *r, int *g, int *b, int *a); +void img_getpixel4f(struct img_pixmap *img, int x, int y, float *r, float *g, float *b, float *a); + + +/* OpenGL helper functions */ + +/* Returns the equivalent OpenGL "format" as expected by the 7th argument of glTexImage2D */ +unsigned int img_fmt_glfmt(enum img_fmt fmt); +/* Returns the equivalent OpenGL "type" as expected by the 8th argument of glTexImage2D */ +unsigned int img_fmt_gltype(enum img_fmt fmt); +/* Returns the equivalent OpenGL "internal format" as expected by the 3rd argument of glTexImage2D */ +unsigned int img_fmt_glintfmt(enum img_fmt fmt); + +/* Same as above, based on the pixel format of the supplied image */ +unsigned int img_glfmt(struct img_pixmap *img); +unsigned int img_gltype(struct img_pixmap *img); +unsigned int img_glintfmt(struct img_pixmap *img); + +/* Creates an OpenGL texture from the image, and returns the texture id, or 0 for failure */ +unsigned int img_gltexture(struct img_pixmap *img); + +/* Load an image and create an OpenGL texture out of it */ +unsigned int img_gltexture_load(const char *fname); +unsigned int img_gltexture_read_file(FILE *fp); +unsigned int img_gltexture_read(struct img_io *io); + +/* These functions can be used to fill an img_io struct before it's passed to + * one of the user-defined i/o image reading/writing functions (img_read/img_write). + * + * User-defined i/o functions: + * + * - size_t read_func(void *buffer, size_t bytes, void *user_ptr) + * Must try to fill the buffer with the specified number of bytes, and return + * the number of bytes actually read. + * + * - size_t write_func(void *buffer, size_t bytes, void *user_ptr) + * Must write the specified number of bytes from the supplied buffer and return + * the number of bytes actually written. + * + * - long seek_func(long offset, int whence, void *user_ptr) + * Must seek offset bytes from: the beginning of the file if whence is SEEK_SET, + * the current position if whence is SEEK_CUR, or the end of the file if whence is + * SEEK_END, and return the resulting file offset from the beginning of the file. + * (i.e. seek_func(0, SEEK_CUR, user_ptr); must be equivalent to an ftell). + * + * All three functions get the user-data pointer set through img_io_set_user_data + * as their last argument. + * + * Note: obviously you don't need to set a write function if you're only going + * to call img_read, or the read and seek function if you're only going to call + * img_write. + * + * Note: if the user-supplied write function is buffered, make sure to flush + * (or close the file) after img_write returns. + */ +void img_io_set_user_data(struct img_io *io, void *uptr); +void img_io_set_read_func(struct img_io *io, size_t (*read)(void*, size_t, void*)); +void img_io_set_write_func(struct img_io *io, size_t (*write)(void*, size_t, void*)); +void img_io_set_seek_func(struct img_io *io, long (*seek)(long, int, void*)); + + +#ifdef __cplusplus +} +#endif + + +#endif /* IMAGO_H_ */ diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/src/imago_gl.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/src/imago_gl.c Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,223 @@ +#include "imago2.h" + + +/* to avoid dependency to OpenGL, I'll define all the relevant GL macros manually */ +#define GL_UNSIGNED_BYTE 0x1401 +#define GL_FLOAT 0x1406 + +#define GL_LUMINANCE 0x1909 +#define GL_RGB 0x1907 +#define GL_RGBA 0x1908 + +#define GL_RGBA32F 0x8814 +#define GL_RGB32F 0x8815 +#define GL_LUMINANCE32F 0x8818 + +#define GL_TEXTURE_2D 0x0de1 +#define GL_TEXTURE_WRAP_S 0x2802 +#define GL_TEXTURE_WRAP_T 0x2803 +#define GL_TEXTURE_MAG_FILTER 0x2800 +#define GL_TEXTURE_MIN_FILTER 0x2801 +#define GL_LINEAR 0x2601 +#define GL_REPEAT 0x2901 + + +typedef unsigned int GLenum; +typedef unsigned int GLuint; +typedef int GLint; +typedef int GLsizei; +typedef void GLvoid; + +/* for the same reason I'll load GL functions dynamically */ +typedef void (*gl_gen_textures_func)(GLsizei, GLuint*); +typedef void (*gl_bind_texture_func)(GLenum, GLuint); +typedef void (*gl_tex_parameteri_func)(GLenum, GLenum, GLint); +typedef void (*gl_tex_image2d_func)(GLenum, GLint, GLint, GLsizei, GLsizei, GLint, GLenum, GLenum, const GLvoid*); + +static gl_gen_textures_func gl_gen_textures; +static gl_bind_texture_func gl_bind_texture; +static gl_tex_parameteri_func gl_tex_parameteri; +static gl_tex_image2d_func gl_tex_image2d; + +static int load_glfunc(void); + +unsigned int img_fmt_glfmt(enum img_fmt fmt) +{ + switch(fmt) { + case IMG_FMT_GREY8: + case IMG_FMT_GREYF: + return GL_LUMINANCE; + + case IMG_FMT_RGB24: + case IMG_FMT_RGBF: + return GL_RGB; + + case IMG_FMT_RGBA32: + case IMG_FMT_RGBAF: + return GL_RGBA; + + default: + break; + } + return 0; +} + +unsigned int img_fmt_gltype(enum img_fmt fmt) +{ + switch(fmt) { + case IMG_FMT_GREY8: + case IMG_FMT_RGB24: + case IMG_FMT_RGBA32: + return GL_UNSIGNED_BYTE; + + case IMG_FMT_GREYF: + case IMG_FMT_RGBF: + case IMG_FMT_RGBAF: + return GL_FLOAT; + + default: + break; + } + return 0; +} + +unsigned int img_fmt_glintfmt(enum img_fmt fmt) +{ + switch(fmt) { + case IMG_FMT_GREY8: + return GL_LUMINANCE; + case IMG_FMT_RGB24: + return GL_RGB; + case IMG_FMT_RGBA32: + return GL_RGBA; + case IMG_FMT_GREYF: + return GL_LUMINANCE32F; + case IMG_FMT_RGBF: + return GL_RGB32F; + case IMG_FMT_RGBAF: + return GL_RGBA32F; + default: + break; + } + return 0; +} + +unsigned int img_glfmt(struct img_pixmap *img) +{ + return img_fmt_glfmt(img->fmt); +} + +unsigned int img_gltype(struct img_pixmap *img) +{ + return img_fmt_gltype(img->fmt); +} + +unsigned int img_glintfmt(struct img_pixmap *img) +{ + return img_fmt_glintfmt(img->fmt); +} + +unsigned int img_gltexture(struct img_pixmap *img) +{ + unsigned int tex; + unsigned int intfmt, fmt, type; + + if(!gl_gen_textures) { + if(load_glfunc() == -1) { + fprintf(stderr, "imago: failed to initialize the OpenGL helpers\n"); + return 0; + } + } + + intfmt = img_glintfmt(img); + fmt = img_glfmt(img); + type = img_gltype(img); + + gl_gen_textures(1, &tex); + gl_bind_texture(GL_TEXTURE_2D, tex); + gl_tex_parameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + gl_tex_parameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + gl_tex_parameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); + gl_tex_parameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); + gl_tex_image2d(GL_TEXTURE_2D, 0, intfmt, img->width, img->height, 0, fmt, type, img->pixels); + return tex; +} + +unsigned int img_gltexture_load(const char *fname) +{ + struct img_pixmap img; + unsigned int tex; + + img_init(&img); + if(img_load(&img, fname) == -1) { + img_destroy(&img); + return 0; + } + + tex = img_gltexture(&img); + img_destroy(&img); + return tex; +} + +unsigned int img_gltexture_read_file(FILE *fp) +{ + struct img_pixmap img; + unsigned int tex; + + img_init(&img); + if(img_read_file(&img, fp) == -1) { + img_destroy(&img); + return 0; + } + + tex = img_gltexture(&img); + img_destroy(&img); + return tex; +} + +unsigned int img_gltexture_read(struct img_io *io) +{ + struct img_pixmap img; + unsigned int tex; + + img_init(&img); + if(img_read(&img, io) == -1) { + img_destroy(&img); + return 0; + } + + tex = img_gltexture(&img); + img_destroy(&img); + return tex; +} + +#if defined(__unix__) || defined(__APPLE__) +#ifndef __USE_GNU +#define __USE_GNU +#endif + +#include +#endif +#ifdef WIN32 +#include +#endif + +static int load_glfunc(void) +{ +#if defined(__unix__) || defined(__APPLE__) + gl_gen_textures = (gl_gen_textures_func)dlsym(RTLD_DEFAULT, "glGenTextures"); + gl_bind_texture = (gl_bind_texture_func)dlsym(RTLD_DEFAULT, "glBindTexture"); + gl_tex_parameteri = (gl_tex_parameteri_func)dlsym(RTLD_DEFAULT, "glTexParameteri"); + gl_tex_image2d = (gl_tex_image2d_func)dlsym(RTLD_DEFAULT, "glTexImage2D"); +#endif + +#ifdef WIN32 + HMODULE handle = GetModuleHandle(0); + gl_gen_textures = (gl_gen_textures_func)GetProcAddress(handle, "glGenTextures"); + gl_bind_texture = (gl_bind_texture_func)GetProcAddress(handle, "glBindTexture"); + gl_tex_parameteri = (gl_tex_parameteri_func)GetProcAddress(handle, "glTexParameteri"); + gl_tex_image2d = (gl_tex_image2d_func)GetProcAddress(handle, "glTexImage2D"); +#endif + + return (gl_gen_textures && gl_bind_texture && gl_tex_parameteri && gl_tex_image2d) ? 0 : -1; +} diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/test/Makefile --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/test/Makefile Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,19 @@ +obj = test.o +bin = test + +CC = gcc +CFLAGS = -pedantic -Wall -g -I../src +LDFLAGS = $(lib) + +ifeq ($(shell uname -s), Darwin) + lib = ../libimago.dylib +else + lib = ../libimago.so.2.0 +endif + +$(bin): $(obj) $(lib) + $(CC) -o $@ $(obj) $(LDFLAGS) + +.PHONY: clean +clean: + rm -f $(obj) $(bin) diff -r fca1f126d23b -r 819c7ebb1bec libs/libimago/test/test.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libs/libimago/test/test.c Fri Jul 18 05:07:40 2014 +0300 @@ -0,0 +1,63 @@ +#include +#include + +int main(int argc, char **argv) +{ + const char *infile = "foo.jpg"; + const char *outfile = "bar.jpg"; + int i, j, xsz = 512, ysz = 512; + struct img_pixmap img; + + for(i=1; i> 5) & 1) == ((j >> 5) & 1); + + *pix++ = bw ? 255 : 0; + *pix++ = 127; + *pix++ = bw ? 0 : 255; + } + } + } + + if(img_save(&img, outfile) == -1) { + fprintf(stderr, "failed to save file %s\n", outfile); + return 1; + } + + img_destroy(&img); + return 0; +}