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Skin template system, separate prev sprite, reorganize device scripts

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Add tools/gen_skin_template.py to generate a labeled 642x420 PNG template
for creating custom spritesheets. Move rg35xx device scripts from tools/
to device/rg35xx/. Point prev_sprite at its own cell (bottom-center) so
Prev and Next can have distinct icons.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Michael Smith
2026-02-14 23:47:21 +01:00
parent 02ab142d96
commit 8a638acdd8
8 changed files with 107 additions and 5 deletions
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CLAUDE.md
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@@ -34,7 +34,7 @@ No test suite, no linter.
## Architecture
Single-file C program: `src/sdlamp2.c` (~650 lines). One generated header: `src/controls_png.h` (embedded PNG byte array — regenerate with `./tools/embed_png.py assets/controls.png src/controls_png.h` if the spritesheet changes).
Single-file C program: `src/sdlamp2.c` (~650 lines). One generated header: `src/controls_png.h` (embedded PNG byte array — regenerate with `python3 tools/embed_png.py assets/controls.png src/controls_png.h` if the spritesheet changes). Skin template: `python3 tools/gen_skin_template.py [output.png]` generates a labeled grid template for creating custom spritesheets (requires Pillow). Device-specific scripts live in `device/rg35xx/`.
Key sections in order:
- **Decoder struct** — holds all FFmpeg state (format/codec contexts, swr resampler, album art texture)