RED tint on image files on Arduino GIGA and I believe Teensy boards as well

[KurtE]

I am currently running on Version 1.4.1 - I tried to sync up and build with your current sources. (last change) Fix 64 bit support - and I am getting compiler errors.

All of the JPEG files are now seeing a RED tint, like:

Others are seeing it as well up on Arduino forum: https://forum.arduino.cc/t/display-jpg-from-a-sd-card/1204519/26

Not sure if this helps, but this sketch is setup to run on Arduino GIGA with the GIGA shield. (I was seeing it as well when displaying on ILI9341).

tft_picture_view_sd_giga_shield-240203a.zip

PNG files with your decoder appear OK, also BMP files that I load directly also look fine.

2401C188 Loading JPG image 'Small-Drake.jpg' 54453
Image size: 400x320Scale: 1/1 Image Offsets (200, 80)
!!File:Small-Drake.jpg Time:332 writeRect calls:0

This one was loaded from SD Card, can also load them from USB memory stick (which is slower) on GIGA.

Let me know if you need any additional information

[KurtE]

Quick update, I just synced the sources again as I see a couple of commits... Still does not build:

"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\arm-none-eabi-gcc\\7-2017q4/bin/arm-none-eabi-g++" -c -x assembler-with-cpp -mcpu=cortex-m7 -mfpu=fpv5-d16 -DARDUINO=10607 -DARDUINO_GIGA -DARDUINO_ARCH_MBED_GIGA -DARDUINO_ARCH_MBED "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\mbed_giga\\4.0.10\\cores\\arduino" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\mbed_giga\\4.0.10\\variants\\GIGA" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\Arduino_USBHostMbed5\\src" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\mbed_giga\\4.0.10\\libraries\\SPI" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\SdFat_real\\src" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\elapsedMillis" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\GIGA_digitalWriteFast" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\JPEGDEC\\src" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\PNGdec\\src" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\Arduino_GigaDisplay_GFX\\src" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\mbed_giga\\4.0.10\\libraries\\Arduino_H7_Video\\src" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\Adafruit_GFX_Library" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\Adafruit_BusIO" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\mbed_giga\\4.0.10\\libraries\\Wire" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\mbed_giga\\4.0.10\\libraries\\Portenta_SDRAM\\src" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\mbed_giga\\4.0.10\\libraries\\ea_malloc" -DCM4_BINARY_START=0x60000000 -DCM4_BINARY_END=0x60040000 -DCM4_RAM_END=0x60080000 "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\mbed_giga\\4.0.10\\cores\\arduino/api/deprecated" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\mbed_giga\\4.0.10\\cores\\arduino/api/deprecated-avr-comp" "-iprefixC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\mbed_giga\\4.0.10\\cores\\arduino" "@C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\mbed_giga\\4.0.10\\variants\\GIGA/../GIGA/includes.txt" "c:\\Users\\kurte\\Documents\\Arduino\\libraries\\JPEGDEC\\src\\s3_simd_dequant.S" -o "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino\\sketches\\1B3D878E0D4E79C3B2F3E4B9EAB8241D\\libraries\\JPEGDEC\\s3_simd_dequant.S.o"
In file included from c:\Users\kurte\Documents\Arduino\libraries\JPEGDEC\src\JPEGDEC.cpp:32:0:
c:\Users\kurte\Documents\Arduino\libraries\JPEGDEC\src\jpeg.inl: In function 'int JPEGMakeHuffTables(JPEGIMAGE*, int)':
c:\Users\kurte\Documents\Arduino\libraries\JPEGDEC\src\jpeg.inl:1116:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if (iTable * HUFF11SIZE >= sizeof(pJPEG->usHuffAC) / 2)
                 ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\JPEGDEC\src\jpeg.inl: In function 'void JPEGIDCT(JPEGIMAGE*, int, int)':
c:\Users\kurte\Documents\Arduino\libraries\JPEGDEC\src\jpeg.inl:2204:17: error: 'ucMaxACCol' was not declared in this scope
     ucColMask = ucMaxACCol | 1; // column 0 must always be calculated
                 ^~~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\JPEGDEC\src\jpeg.inl:2210:19: error: 'ucMaxACRow' was not declared in this scope
             if (!(ucMaxACRow & (1<<iCol))) // simpler calculations if only half populated
                   ^~~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\JPEGDEC\src\jpeg.inl: In function 'void JPEGPixelLE(uint16_t*, int, int, int)':
c:\Users\kurte\Documents\Arduino\libraries\JPEGDEC\src\jpeg.inl:2703:40: warning: left shift of negative value [-Wshift-negative-value]
     uint32_t ulTmp = -1409 | (-2925 << 16); // for green calc
                                        ^~
c:\Users\kurte\Documents\Arduino\libraries\JPEGDEC\src\jpeg.inl: In function 'void JPEGPixel2LE(uint16_t*, int, int, int, int)':
c:\Users\kurte\Documents\Arduino\libraries\JPEGDEC\src\jpeg.inl:2779:48: warning: left shift of negative value [-Wshift-negative-value]
     uint32_t ulTmp2, ulTmp = -1409 | (-2925 << 16); // for green calc
                                                ^~
c:\Users\kurte\Documents\Arduino\libraries\JPEGDEC\src\JPEGDEC.cpp: In member function 'void JPEGDEC::setFramebuffer(void*)':
c:\Users\kurte\Documents\Arduino\libraries\JPEGDEC\src\JPEGDEC.cpp:36:5: error: 'JPEG_setFramebuffer' was not declared in this scope
     JPEG_setFramebuffer(&_jpeg, pFramebuffer);
     ^~~~~~~~~~~~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\JPEGDEC\src\JPEGDEC.cpp:36:5: note: suggested alternative: 'setFramebuffer'
     JPEG_setFramebuffer(&_jpeg, pFramebuffer);
     ^~~~~~~~~~~~~~~~~~~
     setFramebuffer
Multiple libraries were found for "SdFat.h"
  Used: C:\Users\kurte\Documents\Arduino\libraries\SdFat_real
  Not used: C:\Users\kurte\Documents\Arduino\libraries\SdFat_-_Adafruit_Fork
Using library Arduino_USBHostMbed5 at version 0.3.1 in folder: D:\github\Arduino_USBHostMbed5 

[bitbank2]

What pixel type are you outputting? Can you share the calls you're making to the library? I've been testing on ESP32-S3 hardware, but I can switch back to M7. The latest changes aren't in the release build and are for desktop PC optimizations.

[KurtE]

Again Note: current code does not build on GIGA nor Teensy MicroMod or 3.6

#if !defined (HAS_SSE) && !defined(HAS_NEON)
    // do columns first
    ucColMask = ucMaxACCol | 1; // column 0 must always be calculated
    for (iCol = 0; iCol < 8 && ucColMask; iCol++)
    {
        if (ucColMask & (1<<iCol)) // column has data in it
        {
            ucColMask &= ~(1<<iCol); // unmark this col after use
            if (!(ucMaxACRow & (1<<iCol))) // simpler calculations if only half populated

ucMaxACRow is not defined...

Here is some of the code calling it:

void processJPGFile(WrapperFile &jpgFile, const char *name, bool fErase) {
  int image_size = jpgFile.size();
  jpgFile.seek(0);
  Serial.println();
  Serial.print((uint32_t)&jpgFile, HEX);
  Serial.print(F(" Loading JPG image '"));
  Serial.print(name);
  Serial.print("' ");
  Serial.println(image_size, DEC);
  uint8_t scale = 1;
  if (jpeg.open((void *)&jpgFile, image_size, nullptr, myReadJPG, mySeekJPG, JPEGDraw)) {
    int image_width = jpeg.getWidth();
    int image_height = jpeg.getHeight();
    int decode_options = 0;
    Serial.print("Image size: ");
    Serial.print(image_width);
    Serial.print("x");
    Serial.print(image_height);
    switch (g_JPGScale) {
      case 1:
        scale = 1;
        decode_options = 0;
        break;
      case 2:
        scale = 2;
        decode_options = JPEG_SCALE_HALF;
        break;
      case 4:
        scale = 4;
        decode_options = JPEG_SCALE_QUARTER;
        break;
      case 8:
        scale = 8;
        decode_options = JPEG_SCALE_EIGHTH;
        break;
      default:
        {
          if ((image_width > g_jpg_scale_x_above[SCL_16TH]) || (image_height > g_jpg_scale_y_above[SCL_16TH])) {
            decode_options = JPEG_SCALE_EIGHTH | JPEG_SCALE_HALF;
            scale = 16;
          } else if ((image_width > g_jpg_scale_x_above[SCL_EIGHTH]) || (image_height > g_jpg_scale_y_above[SCL_EIGHTH])) {
            decode_options = JPEG_SCALE_EIGHTH;
            scale = 8;
          } else if ((image_width > g_jpg_scale_x_above[SCL_QUARTER]) || (image_height > g_jpg_scale_y_above[SCL_QUARTER])) {
            decode_options = JPEG_SCALE_QUARTER;
            scale = 4;
          } else if ((image_width > g_jpg_scale_x_above[SCL_HALF]) || (image_height > g_jpg_scale_y_above[SCL_HALF])) {
            decode_options = JPEG_SCALE_HALF;
            scale = 2;
          }
        }
    }
    if (fErase && ((image_width / scale < g_tft_width) || (image_height / scale < g_tft_height))) {
      tft.fillScreen((uint16_t)g_background_color);
    }

    if (g_center_image) {
      g_image_offset_x = (g_tft_width - image_width / scale) / 2;
      g_image_offset_y = (g_tft_height - image_height / scale) / 2;
    } else {
      g_image_offset_x = 0;
      g_image_offset_y = 0;
    }
    g_image_scale = scale;
    Serial.print("Scale: 1/");
    Serial.print(g_image_scale);
    Serial.print(" Image Offsets (");
    Serial.print(g_image_offset_x);
    Serial.print(", ");
    Serial.print(g_image_offset_y), Serial.println(")");

    jpeg.decode(0, 0, decode_options);
    jpeg.close();
  } else {
    Serial.println("Was not a valid jpeg file");
  }
  jpgFile.close();
}

int32_t myReadJPG(JPEGFILE *pjpegfile, uint8_t *buffer, int32_t length) {
  if (!pjpegfile || !pjpegfile->fHandle) return 0;
  return ((WrapperFile *)(pjpegfile->fHandle))->read(buffer, length);
}
int32_t mySeekJPG(JPEGFILE *pjpegfile, int32_t position) {
  if (!pjpegfile || !pjpegfile->fHandle) return 0;
  return ((WrapperFile *)(pjpegfile->fHandle))->seek(position);
}

int JPEGDraw(JPEGDRAW *pDraw) {
  if (g_debug_output) {
    Serial.print("jpeg draw: x,y=");
    Serial.print(pDraw->x);
    Serial.print(",");
    Serial.print(pDraw->y);
    Serial.print(", cx,cy = ");
    Serial.print(pDraw->iWidth);
    Serial.print(",");
    Serial.println(pDraw->iHeight);
  }
  writeClippedRect(pDraw->x, pDraw->y, pDraw->iWidth, pDraw->iHeight, pDraw->pPixels);
  return 1;
}
#endif

[bitbank2]

I can reproduce the problem - I'll post a fix shortly.

[bitbank2]

I pushed a fix which temporarily disables the M4/M7 SIMD code. The problem started when Teensyduino removed the M4 intrinsics. I added my own and perhaps the definitions are not equivalent. I'll continue to investigate.

[wdx04]

Got the same problem on a NUCLEO-F413ZH board. Disabling SIMD fixed the problem, though the decoding time is longer(49630 us to decode a 14K 120x180 image without SIMD, compared to 45340 us when SIMD is used).

[bitbank2]

Are you using the release version or what's on Github at the moment? @wdx04

[wdx04]

Are you using the release version or what's on Github at the moment? @wdx04

I think I'm using the current master branch. I download the code as a zip file earlier this year, the JPEGDEC-master folder inside the zip file was last modified at March 23.

[bitbank2]

Correction - I didn't push the fix yet because I have a bunch of new functionality that I am unsure about giving away for free. I've had second thoughts about everyone using my work and I get nothing in return.

[bitbank2]

I guess I can cherry pick this particular fix, hang on

[bitbank2]

ok, try it now

[wdx04]

ok, try it now

Thank you. There is a compilation error at line 2781, because the 'ulTmp' variable is undefined:

uint32_t ulTmp2 = 0xfa7f /*-1409*/ | 0xf4930000 /*(-2925 << 16)*/; // for green calc     

I tried to fix the error and recompile:

uint32_t ulTmp2, ulTmp = 0xfa7f /*-1409*/ | 0xf4930000 /*(-2925 << 16)*/; // for green calc     

But the decoded images seem to be unaffected by the fix, I still see red images after the fix.

[bitbank2]

ok, thanks for trying. I need to set up a build environment and PCB to test these for all pixel types. I had given up on using CM4 SIMD because it's nearly useless.