Convert usermods from header to library

usermods/pov_display/pov_display.cpp

@@ -0,0 +1,89 @@
+#pragma once
+#include "wled.h"
+#include <PNGdec.h>
+
+void * openFile(const char *filename, int32_t *size) {
+    f = WLED_FS.open(filename);
+    *size = f.size();
+    return &f;
+}
+
+void closeFile(void *handle) {
+    if (f) f.close();
+}
+
+int32_t readFile(PNGFILE *pFile, uint8_t *pBuf, int32_t iLen)
+{
+    int32_t iBytesRead;
+    iBytesRead = iLen;
+    File *f = static_cast<File *>(pFile->fHandle);
+    // Note: If you read a file all the way to the last byte, seek() stops working
+    if ((pFile->iSize - pFile->iPos) < iLen)
+	iBytesRead = pFile->iSize - pFile->iPos - 1; // <-- ugly work-around
+    if (iBytesRead <= 0)
+	return 0;
+    iBytesRead = (int32_t)f->read(pBuf, iBytesRead);
+    pFile->iPos = f->position();
+    return iBytesRead;
+}
+
+int32_t seekFile(PNGFILE *pFile, int32_t iPosition)
+{
+    int i = micros();
+    File *f = static_cast<File *>(pFile->fHandle);
+    f->seek(iPosition);
+    pFile->iPos = (int32_t)f->position();
+    i = micros() - i;
+    return pFile->iPos;
+}
+
+void draw(PNGDRAW *pDraw) {
+    uint16_t usPixels[SEGLEN];
+    png.getLineAsRGB565(pDraw, usPixels, PNG_RGB565_LITTLE_ENDIAN, 0xffffffff);
+    for(int x=0; x < SEGLEN; x++) {
+	uint16_t color = usPixels[x];
+	byte r = ((color >> 11) & 0x1F);
+	byte g = ((color >> 5) & 0x3F);
+	byte b = (color & 0x1F);
+	SEGMENT.setPixelColor(x, RGBW32(r,g,b,0));
+    }
+    strip.show();
+}
+
+uint16_t mode_pov_image(void) {
+    const char * filepath = SEGMENT.name;
+    int rc = png.open(filepath, openFile, closeFile, readFile, seekFile, draw);
+    if (rc == PNG_SUCCESS) {
+	rc = png.decode(NULL, 0);
+	png.close();
+	return FRAMETIME;
+    }
+    return FRAMETIME;
+}
+
+class PovDisplayUsermod : public Usermod
+{
+  public:
+    static const char _data_FX_MODE_POV_IMAGE[] PROGMEM = "POV Image@!;;;1";
+
+    PNG png;
+    File f;
+
+    void setup() {
+	strip.addEffect(255, &mode_pov_image, _data_FX_MODE_POV_IMAGE);
+    }
+
+    void loop() {
+    }
+
+    uint16_t getId()
+    {
+      return USERMOD_ID_POV_DISPLAY;
+    }
+
+    void connected() {}
+};
+
+
+static PovDisplayUsermod pov_display;
+REGISTER_USERMOD(pov_display);