text: /*****************************************************************************
  * | File      	:   GUI_BMPfile.h
  * | Author      :   Waveshare team
  * | Function    :   Hardware underlying interface
  * | Info        :
  *                Used to shield the underlying layers of each master
  *                and enhance portability
  *----------------
  * |	This version:   V2.2
  * | Date        :   2020-07-08
  * | Info        :
  * -----------------------------------------------------------------------------
  * V2.2(2020-07-08):
  * 1.Add GUI_ReadBmp_RGB_7Color()
  * V2.1(2019-10-10):
  * 1.Add GUI_ReadBmp_4Gray()
  * V2.0(2018-11-12):
  * 1.Change file name: GUI_BMP.h -> GUI_BMPfile.h
  * 2.fix: GUI_ReadBmp()
  *   Now Xstart and Xstart can control the position of the picture normally,
  *   and support the display of images of any size. If it is larger than
  *   the actual display range, it will not be displayed.
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documnetation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to  whom the Software is
  # furished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  # THE SOFTWARE.
  #
  ******************************************************************************/
  #ifndef __GUI_BMPFILE_H
  #define __GUI_BMPFILE_H
  
  #include <stdio.h>
  #include <fcntl.h>
  #include <unistd.h>
  #include <stdint.h>
  
  #include "DEV_Config.h"
  
  /*Bitmap file header   14bit*/
  typedef struct BMP_FILE_HEADER {
      UWORD bType;        //File identifier
      UDOUBLE bSize;      //The size of the file
      UWORD bReserved1;   //Reserved value, must be set to 0
      UWORD bReserved2;   //Reserved value, must be set to 0
      UDOUBLE bOffset;    //The offset from the beginning of the file header to the beginning of the image data bit
  } __attribute__ ((packed)) BMPFILEHEADER;    // 14bit
  
  /*Bitmap information header  40bit*/
  typedef struct BMP_INFO {
      UDOUBLE biInfoSize;      //The size of the header
      UDOUBLE biWidth;         //The width of the image
      UDOUBLE biHeight;        //The height of the image
      UWORD biPlanes;          //The number of planes in the image
      UWORD biBitCount;        //The number of bits per pixel
      UDOUBLE biCompression;   //Compression type
      UDOUBLE bimpImageSize;   //The size of the image, in bytes
      UDOUBLE biXPelsPerMeter; //Horizontal resolution
      UDOUBLE biYPelsPerMeter; //Vertical resolution
      UDOUBLE biClrUsed;       //The number of colors used
      UDOUBLE biClrImportant;  //The number of important colors
  } __attribute__ ((packed)) BMPINFOHEADER;
  
  /*Color table: palette */
  typedef struct RGB_QUAD {
      UBYTE rgbBlue;               //Blue intensity
      UBYTE rgbGreen;              //Green strength
      UBYTE rgbRed;                //Red intensity
      UBYTE rgbReversed;           //Reserved value
  } __attribute__ ((packed)) BMPRGBQUAD;
  /**************************************** end ***********************************************/
  
  UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart);
  UBYTE GUI_ReadBmp_4Gray(const char *path, UWORD Xstart, UWORD Ystart);
  UBYTE GUI_ReadBmp_RGB_7Color(const char *path, UWORD Xstart, UWORD Ystart);
  #endif
  