A GIF (Graphics Interchange Format) encoder written in the C programming language. The api can be used to create gifs with code as shown in the various examples in src/test. The codebase can be used as a static library, shared library, or web assembly module. The compiled files for these options are in the release package folder (alternatively they can be easily compiled using the makefile). All public interface functions have been prefixed with gif_ to avoid any namespace collisions. This library/program was created with a strong error-checking system in mind. You can find the meanings of the integer error return values in src/main.h. Valgrind was used to extensively test this library/program, no memory leaks are present.
The following gifs were created using my encoder. You can find the code for the ERR70_ GIF in src/gif/GIFError.c. The code for other tests (including the gradient GIF) is located in src/test. A typing effect utility is located in src/util/typeTextUtility.c. Other generated/encoded GIF examples are located in the examples folder.
static library:
make libstatic -j2shared library:
make libshared -j2web assembly (emscripten required):
make wasmThe public interface of this library can be found in src/libgifencoder_stub.h. This is also the file you can include in your c code when using the static or dynamic library.
In order to use this library in your c code, you must link both math.h and the library .a/.so file. To do the latter you must specify the path to the library. Including both math.h and the libgifencoder.a/.so looks like this:
gcc main.c -Lpath/to/library -lgifencoder -lmFor using the shared .so library, an additional step is needed for allowing the library to be found during run time. This step is described in detail here.
The Graphics Interchange Format(c) is the Copyright property of CompuServe Incorporated.
The lettersAndNumbers.c/h utility contains a copy of the Grand9K Pixel font free for commercial use.