bmp图片

只看该作者 · 2019-11-27 18:54

大神们，帮我看看这程序，我一直显示不出图片，我检查了几遍都没发现问题
程序为：bsp_bm.c和bsp_bm.h

bsp_bm.c为
#include &quot;bsp_bmp.h&quot;
#include &quot;bsp_ili9341.h&quot;
#include &quot;ff.h&quot;
//#include &quot;bsp_usart1.h&quot;

FATFS bmpfs[2];
FIL bmpfsrc,bmpfdst;
BYTE  pColorData[960];
FRESULT bmpres;

#define RGB24TORGB16(R,G,B) ((unsigned short int)((((R)>>3)<<11) | (((G)>>2)<<5)       | ((B)>>3)))

void LCD_Show_Bmp(unsigned short int x,unsigned short int y,unsigned char *pic_name)
{
      int height,width,l_width;
      int i,j,k;
      unsigned int read_num;
      unsigned char temp_name[20];

      BITMAPFILEHEADER bitheader;
      BITMAPINFOHEADER bitinfoheader;
      BYTE red,green,blue;
      WORD filetype;

      sprintf((char*)temp_name,&quot;0:%s&quot;,pic_name);

      f_mount(0,&bmpfs[0]);

      bmpres=f_open(&bmpfsrc,(char *)temp_name,FA_OPEN_EXISTING|FA_READ);

      if(bmpres ==FR_OK)
            {
                     printf(&quot;\r\ngood&quot;);
                     f_read(&bmpfsrc,&filetype,sizeof(WORD),&read_num);
                     f_read(&bmpfsrc,&bitheader,sizeof(tagBITMAPFILEHEADER),&read_num);
                     f_read(&bmpfsrc,&bitinfoheader,sizeof(BITMAPINFOHEADER),&read_num);
            }
      else
      {
                     return;
      }
            height=bitinfoheader.biHeight;
            width =bitinfoheader.biWidth;
            l_width=WIDTHBYTES(width*(bitinfoheader.biBitCount));

            if(l_width>960)
            {
                     return;
            }

            LCD_GramScan(3);

            LCD_OpenWindows(x,y,width,height);

            if(bitinfoheader.biBitCount >=24)
            {
                     printf(&quot;\r\ngood1&quot;);
                              for(i=0;i<height;i++)
                     {
//                      f_read(&bmpfsrc,pColorData,l_width/2,&read_num);
//                      f_read(&bmpfsrc,pColorData+l_width/2,l_width/2,&read_num);
                                    f_read(&bmpfsrc,pColorData,l_width,&read_num);
                                             for(j=0;j<width;j++)
                                                      {
                                                               k=j*3;
                                                                     red =pColorData[k+2];
                                                               green =pColorData[k+1];
                                                                     blue  =pColorData[k];
//                                                       printf(&quot;0x%x0x%x0x%x&quot;,pColorData[k],pColorData[k+1],pColorData[k+2]);
                                                                     LCD_WR_Data(RGB24TORGB16(red,green,blue));
                                                      }
                     }

            }
            f_close(&bmpfsrc);

}

bsp_bm.h为
#ifndef __BSP_BMP_H
#define __BSP_BMP_H

#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

typedef unsigned char  BYTE;
typedef unsigned short WORD;
typedef unsigned long DWORD;
typedef long LONG;

#define WIDTHBYTES(bits)    (((bits)+31)/32*4)

typedef struct tagBITMAPFILEHEADER
{
      DWORD bfSize;
      WORD  bfReserved1;
      WORD  bfReserved2;
      DWORD bfOffBits;
}BITMAPFILEHEADER,tagBITMAPFILEHEADER;

typedef struct tagBITMAPINFOHEADER
{
      DWORD biSize;
      LONG  biWidth;
      LONG  biHeight;
      WORD  biPlanes;
      WORD  biBitCount;
      DWORD biCompression;
      DWORD biSizeImage;
      LONG  biXPelsPerMeter;
      LONG  biYPelsPerMeter;
      DWORD biClrUsed;
      DWORD biClrImportant;

}BITMAPINFOHEADER,tagBITMAPINFOHEADER;

void LCD_Show_Bmp(unsigned short int x,unsigned short int y,unsigned char *pic_name);

#endif

bmp图片

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