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https://github.com/daveallie/crosspoint-reader.git
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16568932cf
Pre-scaling (critical fix): - Add pre-scaling to fit display dimensions (480x800) before dithering to prevent post-downsampling artifacts that destroy dithering patterns - Use fixed-point (16.16) math for sub-pixel accurate scaling - Implement area averaging for smooth downsampling Dithering improvements: - Add Atkinson dithering (75% error diffusion) for cleaner results - Add Floyd-Steinberg dithering option with serpentine scanning - Keep clustered-dot halftone and Bayer as compile-time options Image adjustments: - Add brightness, contrast, and gamma adjustments for better visibility - Adjust RGB to grayscale conversion (25-50-25) to reduce blue darkness Other changes: - Fix MCU block indexing bug for correct picojpeg buffer access - Pre-generate cover BMP when EPUB is loaded for faster sleep screen |
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|---|---|---|
| .. | ||
| EpdFont | ||
| Epub | ||
| expat | ||
| FsHelpers | ||
| GfxRenderer | ||
| JpegToBmpConverter | ||
| miniz | ||
| picojpeg | ||
| Serialization | ||
| Utf8 | ||
| ZipFile | ||
| README | ||
This directory is intended for project specific (private) libraries.
PlatformIO will compile them to static libraries and link into the executable file.
The source code of each library should be placed in a separate directory
("lib/your_library_name/[Code]").
For example, see the structure of the following example libraries `Foo` and `Bar`:
|--lib
| |
| |--Bar
| | |--docs
| | |--examples
| | |--src
| | |- Bar.c
| | |- Bar.h
| | |- library.json (optional. for custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
| |
| |--Foo
| | |- Foo.c
| | |- Foo.h
| |
| |- README --> THIS FILE
|
|- platformio.ini
|--src
|- main.c
Example contents of `src/main.c` using Foo and Bar:
```
#include <Foo.h>
#include <Bar.h>
int main (void)
{
...
}
```
The PlatformIO Library Dependency Finder will find automatically dependent
libraries by scanning project source files.
More information about PlatformIO Library Dependency Finder
- https://docs.platformio.org/page/librarymanager/ldf.html