Compile errors after updating libraries

StanLaurel · February 15, 2021, 8:49pm

Been having fun with my matrices and SmartMatrix shield. But I updated some libraries and now I get compile errors.
Okay, I understand I must use #include <SmartMatrix.h> instead or SmartMatrix3.h.
And I must #include <MatrixHardware_Teensy3_ShieldV4.h>
So I have a number of sketches to fix.
But in displaying my animated GIFs, I’m getting: ‘class GifDecoder<64, 32, 12>’ has no member named ‘getCycleNo’
This comes from the following code:
#if 0 // 0 for AND time/len, 1 for OR time/len
// default behavior is to play the gif for DISPLAY_TIME_SECONDS or for NUMBER_FULL_CYCLES, whichever comes first
if((now - displayStartTime_millis) > (DISPLAY_TIME_SECONDS * 1000) || decoder.getCycleNo() > NUMBER_FULL_CYCLES)
nextGIF = 1;
#else
// alt behavior is to play the gif until both DISPLAY_TIME_SECONDS and NUMBER_FULL_CYCLES have passed
if((now - displayStartTime_millis) > (DISPLAY_TIME_SECONDS * 1000) && decoder.getCycleNo() > NUMBER_FULL_CYCLES)
nextGIF = 1;
#endif

Did the GIF Decoder change?
Thanks!
Stan Hall

sutaburosu · February 15, 2021, 9:34pm

GifDecoder did change. See the part where it says:

There’s one important API change for previous users of the AnimatedGIFs sketch or earlier versions of the GifDecoder Library: A callback function that returns the current file size is required.

Louis · February 15, 2021, 9:36pm

Also I cleaned up the API a bit. I standardized on “Number” instead of “No” for a couple methods:

github.com

pixelmatix/GifDecoder/blob/master/src/GifDecoder.h#L52


  uint8_t blue;
} rgb_24;
template <int maxGifWidth, int maxGifHeight, int lzwMaxBits, bool useMalloc=false> class GifDecoder {
public:
  GifDecoder(void);
  int startDecoding(void);
  int startDecoding(uint8_t *pData, int iDataSize);
  int decodeFrame(bool delayAfterDecode = true);
  int getCycleTime(void) { return cycleTime; }      // only valid when cycleNumber > 0, ideal number of ms to play one cycle of GIF
  int getFrameNumber(void) { return frameNumber; }  // count of the current frame decoded, resets on each cycle
  int getCycleNumber(void) { return cycleNumber; }  // number indicates number of cycles the GIF has gone through, 0 on first pass,
  int getFrameCount(void) { return frameCount; }    // only valid when cycleNumber > 0, number of frames in one cycle of GIF
  unsigned int getFrameDelay_ms(void) { return frameDelay_ms; } // delay of the last frame decoded
  void getSize(uint16_t *w, uint16_t *h) {
    *w = gif->getCanvasWidth();
    *h = gif->getCanvasHeight();
  }
  void setScreenClearCallback(callback f);
  void setUpdateScreenCallback(callback f);

Sorry if that’s causing you some problems, hopefully you can get going again quickly!

StanLaurel · February 16, 2021, 10:37pm

Thank you, for the help, gentlemen. I’m back up and running. A bit more coding to do to update my sketches, but all is well. Almost all, I have another question, but I’ll start a new subject for it.

Thanks again!
BTW, if anyone is interested, the “pin number” for the CS for the SD card on Teensy 3.5 is 254.

Stan Hall