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#7 decoding finally done
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@ -12,7 +12,7 @@ bool tft_output(int16_t x, int16_t y, uint16_t w, uint16_t h, uint16_t *bitmap);
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static constexpr int MAX_WIDTH = 640;
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static constexpr uint8_t BLOCK_SIZE = 16;
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static uint8_t blockDelta[BLOCK_SIZE * MAX_WIDTH + 1];
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static uint32_t blockDelta[BLOCK_SIZE * MAX_WIDTH + 1];
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//static int16_t curRowDeltaJ[MAX_WIDTH + 1];
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@ -38,6 +38,7 @@ void jpegOpenFramebuffer()
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Serial.println("Failed to open file for writing");
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}
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memset(blockDelta, 0, sizeof(blockDelta));
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pixelCount = 0;
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}
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@ -197,29 +198,27 @@ void jpegFlushFramebuffer()
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void on_drawPixel(uint32_t x, uint32_t y, uint32_t color)
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{
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// fill block
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// collect all mcu blocks for current row
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uint32_t blockPageY = y - ((y / JpegDec.MCUHeight) * JpegDec.MCUHeight);
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blockDelta[(blockPageY * MAX_WIDTH) + x] = color;
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// wir sind im letzten mcu block
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// letzter pixel
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// full mcu row complete
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if (x == JpegDec.width -1 && (y +1) % JpegDec.MCUHeight == 0) {
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// mcu block complete
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//Serial.println("letzter pixel :-), der ganze block ist jetzt fertig und bereit zur ausgabe");
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// MCU block sizes: 8x8, 16x8 or 16x16
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uint32_t originOffsetY = ((y / JpegDec.MCUHeight) * JpegDec.MCUHeight);
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Serial.printf("render block: y: %d - %d \n", originOffsetY, originOffsetY + JpegDec.MCUHeight);
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//Serial.printf("render block: y: %d - %d \n", originOffsetY, originOffsetY + JpegDec.MCUHeight);
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for (uint16_t _y = 0; _y < JpegDec.MCUHeight; _y++)
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{
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for (uint16_t _x = 0; _x < JpegDec.width; _x++)
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{
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uint32_t originX = _x;
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uint32_t originY = originOffsetY + _y; // + (blockPageY * JpegDec.MCUHeight);
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uint8_t originColor = blockDelta[(_y * MAX_WIDTH) + _x];
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uint32_t originY = originOffsetY + _y;
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uint32_t originColor = blockDelta[(_y * MAX_WIDTH) + _x];
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// beste farbe
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uint8_t r = ((((originColor >> 11) & 0x1F) * 527) + 23) >> 6;
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uint8_t g = ((((originColor >> 5) & 0x3F) * 259) + 33) >> 6;
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uint8_t b = (((originColor & 0x1F) * 527) + 23) >> 6;
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