62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
// JPEGDEC example for Adafruit GFX displays
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#include "JPEGDEC.h"
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// Sample image (truncated) containing a 320x240 Exif thumbnail
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// if an image doesn't display, it may have been created using progressive, open gimp, export as a jpg, remove progressive.
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#include "thumb_test.h"
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//#include "ncc1701.h" //http://clipart-library.com/clip-art/uss-enterprise-silhouette-11.htm
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//#include "batman.h" //http://clipart-library.com/clipart/batman-clip-art_19.htm
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#include <M5StickCPlus.h>
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#define DISPLAY_WIDTH 135
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#define DISPLAY_HEIGHT 240
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JPEGDEC jpeg;
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int JPEGDraw(JPEGDRAW *pDraw)
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{
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M5.Lcd.drawBitmap((int16_t)pDraw->x, (int16_t)pDraw->y, (int16_t)pDraw->iWidth, (int16_t)pDraw->iHeight, pDraw->pPixels);
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return 1;
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} /* JPEGDraw() */
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void setup() {
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Serial.begin(115200);
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Serial.println("Starting...");
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M5.begin();
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M5.Lcd.fillScreen(TFT_BLACK);
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} /* setup() */
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void loop() {
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int i;
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long lTime;
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int iOption[4] = {0, JPEG_SCALE_HALF, JPEG_SCALE_QUARTER, JPEG_SCALE_EIGHTH};
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int iCenterX[4] = {0,0,0,0};
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int iCenterY[4] = {0,0,0,0};
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for (i=0; i<4; i++)
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{
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M5.Lcd.fillScreen(TFT_BLACK);
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M5.Lcd.startWrite(); // Not sharing TFT bus on PyPortal, just CS once and leave it
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if (jpeg.openFLASH((uint8_t *)thumb_test, sizeof(thumb_test), JPEGDraw))
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//if (jpeg.openFLASH((uint8_t *)ncc1701, sizeof(ncc1701), JPEGDraw))
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//if (jpeg.openFLASH((uint8_t *)batman, sizeof(batman), JPEGDraw))
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{
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lTime = micros();
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if (jpeg.hasThumb()) {jpeg.decode(iCenterX[i],iCenterY[i],JPEG_EXIF_THUMBNAIL | iOption[i]); } else { jpeg.decode(iCenterX[i],iCenterY[i], iOption[i]); }
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{
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lTime = micros() - lTime;
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Serial.printf("%d x %d image, decode time = %d us\n", jpeg.getWidth() >> i, jpeg.getHeight() >> i, (int)lTime);
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}
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jpeg.close();
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}
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delay(2000); // pause between images
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} // for i
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} /* loop() */
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