Michael Smith
f9fcb9f121
The Allwinner /dev/disp driver resets brightness to 0 when the fd is closed, so the screen monitor's SIGTERM brightness restore was undone before the wrapper wrote goodbye.png. Restore brightness in the wrapper itself, right before the framebuffer write. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
70 lines
2.5 KiB
Bash
Executable File
70 lines
2.5 KiB
Bash
Executable File
#!/bin/sh
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#
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# RG35XX Plus wrapper for sdlamp2
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#
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# Launched by dmenu_ln instead of sdlamp2 directly. Handles device-specific
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# concerns that don't belong in the player binary:
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# 1. Screen idle timeout, power button screen toggle, and long-press shutdown
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# 2. Display the stock firmware's shutdown screen (goodbye.png → /dev/fb0)
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# 3. Launch sdlamp2 as the main process
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#
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# Install: copy to /mnt/vendor/bin/rg35xx-wrapper.sh
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# Config: set CMD in dmenu_ln to point here instead of sdlamp2 directly
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SDLAMP2="/mnt/vendor/bin/sdlamp2"
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AUDIO_DIR="/mnt/sdcard/Music"
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SCREEN_MONITOR="/mnt/vendor/bin/rg35xx-screen-monitor.py"
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# --- WiFi hotspot ---
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# Deprioritized: connecting the device as a WiFi client to a shared network
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# works fine even when sdlamp2 replaces the stock menu. Hotspot/AP mode isn't
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# needed — SSH access works over the shared network.
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# --- Launch sdlamp2 ---
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"$SDLAMP2" "$AUDIO_DIR" &
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SDLAMP2_PID=$!
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# --- Screen monitor (idle timeout + power button toggle + long-press shutdown) ---
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# Must launch after sdlamp2 so PID is available. Reads /dev/input/event0
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# directly for power button events — no evtest dependency.
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python3 "$SCREEN_MONITOR" "$SDLAMP2_PID" &
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SCREEN_MONITOR_PID=$!
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# Wait for sdlamp2 to finish (signal or normal exit).
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wait "$SDLAMP2_PID"
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SDLAMP2_EXIT=$?
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# --- Cleanup ---
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# Kill the screen monitor (SIGTERM restores brightness).
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kill "$SCREEN_MONITOR_PID" 2>/dev/null
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wait "$SCREEN_MONITOR_PID" 2>/dev/null
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# If this was a shutdown, call poweroff and block so the loadapp.sh restart
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# loop doesn't relaunch dmenu_ln (which would take over the framebuffer and
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# overwrite sdlamp2's shutdown screen).
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if [ -f /tmp/.sdlamp2_shutdown ]; then
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rm -f /tmp/.sdlamp2_shutdown
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# Restore backlight brightness before writing the shutdown screen.
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# The screen monitor's SIGTERM handler tries to restore brightness, but
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# the Allwinner /dev/disp driver resets it to 0 when the fd is closed.
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# Re-set it here so goodbye.png is actually visible.
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# Then display the stock firmware's shutdown screen via framebuffer.
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# goodbye.png is 640x480 RGB — exactly matches the display.
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# /dev/fb0 is 32bpp BGRA, so we swap R/B channels and write raw pixels.
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python3 -c "
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import struct, fcntl
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disp = open('/dev/disp', 'wb')
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fcntl.ioctl(disp, 0x102, struct.pack('@4L', 0, 50, 0, 0))
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disp.close()
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from PIL import Image
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img = Image.open('/mnt/vendor/res1/shutdown/goodbye.png').convert('RGBA')
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r, g, b, a = img.split()
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with open('/dev/fb0', 'wb') as f:
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f.write(Image.merge('RGBA', (b, g, r, a)).tobytes())
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" 2>/dev/null
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poweroff
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sleep 30
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fi
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exit "$SDLAMP2_EXIT"
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