TJpg_Decoder.h

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/*
TJpg_Decoder.h
 
JPEG Decoder for Arduino using TJpgDec:
http://elm-chan.org/fsw/tjpgd/00index.html
 
Incorporated into an Arduino library by Bodmer 18/10/19
 
Latest version here:
https://github.com/Bodmer/TJpg_Decoder
*/
 
#ifndef TJpg_Decoder_H
  #define TJpg_Decoder_H
 
  #include "User_Config.h"
  #include "tjpgd.h"
    #include "fl/stl/stdint.h"
  #include "fl/stl/string.h"
  #include "fl/stl/noexcept.h"
 
namespace fl {
namespace third_party {
 
enum {
    TJPG_ARRAY = 0
};
 
//------------------------------------------------------------------------------
 
typedef bool (*SketchCallback)(int16_t x, int16_t y, uint16_t w, uint16_t h, uint16_t *data);
 
class TJpg_Decoder {
 
public:
 
  TJpg_Decoder() FL_NOEXCEPT;
  ~TJpg_Decoder();
 
  static int jd_output(JDEC* jdec, void* bitmap, JRECT* jrect) FL_NOEXCEPT;
  static size_t jd_input(JDEC* jdec, uint8_t* buf, size_t len) FL_NOEXCEPT;
 
  void setJpgScale(uint8_t scale) FL_NOEXCEPT;
  void setCallback(SketchCallback sketchCallback) FL_NOEXCEPT;
 
  JRESULT drawJpg(int32_t x, int32_t y, const uint8_t array[], size_t array_size) FL_NOEXCEPT;
  JRESULT getJpgSize(uint16_t *w, uint16_t *h, const uint8_t array[], size_t array_size) FL_NOEXCEPT;
 
  void setSwapBytes(bool swap) FL_NOEXCEPT;
 
  bool _swap = false;
 
  const uint8_t* array_data  = nullptr;
  size_t array_index = 0;
  size_t array_size  = 0;
 
  // Must align workspace to a 32 bit boundary
  uint8_t workspace[TJPGD_WORKSPACE_SIZE] __attribute__((aligned(4)));
 
  uint8_t jpg_source = 0;
 
  int16_t jpeg_x = 0;
  int16_t jpeg_y = 0;
 
  uint8_t jpgScale = 0;
 
  SketchCallback tft_output = nullptr;
};
 
} // namespace third_party
} // namespace fl
 
#endif // TJpg_Decoder_H