Simple Graphics Library (SGL) provides packed-image resize, crop and rotation, RGB/YUV pixel-format conversion, and runtime services without using the C standard library in the core implementation.

Start Here

Getting Started explains configuration, linking, initialization, and shutdown.
Image Operations describes resize, crop, rotate, and conversion calls.
Pixel Formats and Buffer Sizes defines byte layouts and buffer-size formulas.
Memory, Queue, and Threading covers the memory pool, queue, and thread pool.
The Modules and Files views contain the complete public API reference.

Common Contract

Include <sgl-core.h> for application-facing APIs.
Image rows are tightly packed; public image functions do not accept stride.
SGL_RESTRICT source and destination ranges must not overlap.
The caller allocates all source and destination image buffers.
Passing SGL_NULL as an image operation's pool selects single-thread execution.
Initialize the global SGL memory pool before creating any LUT, queue, or thread pool, or before using an operation that requires temporary storage.

Build This Manual

From the repository root:

make docs

The generated entry point is build/<toolchain>/docs/html/index.html. Doxygen is an optional host dependency and is not required for a normal library build.

Release This Manual

Create self-contained, versioned documentation archives with:

make package-docs

The package/ directory receives .tar.gz and .zip archives plus a SHA256SUMS.txt file. Each archive contains html/index.html, a release README, and the project license. A generated manual is also installed under share/doc/sgl/html by subsequent install and CPack operations.