📄 bmp_show.c
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}
for(i=FIRST_DISPLAY_ADDR;i<512;i++)
{
if(RGB_16bit1.NUMBER==0)
{ RGB_16bit1.first = BMP_RAM_BUFFER[i]; RGB_16bit1.NUMBER++;}
else if(RGB_16bit1.NUMBER==1)
{ RGB_16bit1.second = BMP_RAM_BUFFER[i]; RGB_16bit1.NUMBER++;}
if(RGB_16bit1.NUMBER==2){ //do not use else if
RGB_16bit1.NUMBER = 0;
RGB_LCD = RGB_16bit1.first | (RGB_16bit1.second <<8);
LCD_BUFER[y0-BMP_Lines+BITMAP_INFO_HEADER1.biHeight-1][x0+BMP_Piex_PerLine]= RGB_LCD;
BMP_Piex_PerLine ++;
if(BMP_Piex_PerLine == BITMAP_INFO_HEADER1.biWidth){
BMP_Piex_PerLine=0;
BMP_Lines++;
if(BMP_Lines== BITMAP_INFO_HEADER1.biHeight) return ;
i += blank;
if(i>511) { FIRST_DISPLAY_ADDR = i - 512*PAGE_PER_BLOCK; return ; }
}
}
}//end for
FIRST_DISPLAY_ADDR=0;
}
void Display_OneBlockOf_BMP_16(void)
{
U8 blank; // Windows规定一个扫描行所占的字节数必须是4的倍数(即以long为单位),不足的以0填充.这一点相当重要
U16 x0,y0;
U16 RGB_LCD;
U16 i;
static BMP_Piex_PerLine = 0;
static BMP_Lines = 0 ;
static RGB_16bit RGB_16bit1;
static U16 FIRST_DISPLAY_ADDR=0;
static U8 first_time=0;
if((BITMAP_INFO_HEADER1.biWidth*BITMAP_INFO_HEADER1.biBitCount/8) % 4 !=0 )
blank =4- (BITMAP_INFO_HEADER1.biWidth*BITMAP_INFO_HEADER1.biBitCount/8) % 4 ;
else blank=0;
x0 = (SCR_XSIZE_TFT_240_320 - BITMAP_INFO_HEADER1.biWidth)/2; // 求得bmp图片方的起始点，使图片在虚拟显示空间的当中。
y0 = (SCR_YSIZE_TFT_240_320 - BITMAP_INFO_HEADER1.biHeight)/2;
if (first_time == 0) {
FIRST_DISPLAY_ADDR = BITMAP_FILE_HEADER1.bfOffBits;
first_time =1;
RGB_16bit1.NUMBER = 0;
}
for(i=FIRST_DISPLAY_ADDR;i<512*PAGE_PER_BLOCK;i++)
{
if(RGB_16bit1.NUMBER==0)
{ RGB_16bit1.first = BMP_RAM_BUFFER[i]; RGB_16bit1.NUMBER++;}
else if(RGB_16bit1.NUMBER==1)
{ RGB_16bit1.second = BMP_RAM_BUFFER[i]; RGB_16bit1.NUMBER++;}
if(RGB_16bit1.NUMBER==2){ //do not use else if
RGB_16bit1.NUMBER = 0;
RGB_LCD = RGB_16bit1.first | (RGB_16bit1.second <<8);
LCD_BUFER[y0-BMP_Lines+BITMAP_INFO_HEADER1.biHeight-1][x0+BMP_Piex_PerLine]= RGB_LCD;
BMP_Piex_PerLine ++;
if(BMP_Piex_PerLine == BITMAP_INFO_HEADER1.biWidth){
BMP_Piex_PerLine=0;
BMP_Lines++;
if(BMP_Lines== BITMAP_INFO_HEADER1.biHeight) return ;
i += blank;
if(i>512*PAGE_PER_BLOCK-1) { FIRST_DISPLAY_ADDR = i - 512*PAGE_PER_BLOCK; return ; }
}
}
}//end for
FIRST_DISPLAY_ADDR=0;
}
void display_bmp_blockbyblock(U32 bmp_start_address)
{
U8 ERROR =1 ;
U32 bmp_size;
U8 *bmp_address ;
U32 bmp_start_address0;
bmp_start_address0 = bmp_start_address;
Lcd_ClearScr(0xffff);
//==========================[get bmp imformation]===========================================
if(bmp_start_address>=0x30000000 & bmp_start_address<=0x34000000 )
bmp_address = (LPSTR)bmp_start_address;
else if(bmp_start_address<=0x04000000)
{bmp_address = (LPSTR)BMP_RAM_BUFFER;
ReadOnePageFromNandFlash(bmp_start_address,BMP_RAM_BUFFER);
}
else {Uart_Printf("The bmp addresss is out of range !!!"); return;}
Get_Bmp_Imformation(bmp_address);
//==============================[disply]============================
if (BITMAP_FILE_HEADER1.bfType!= 0x4d42) {
Uart_Printf("It is not a BMP picture ! ERROR!!!!! \n\n\n");
ERROR =0;
}
else{
if(BITMAP_INFO_HEADER1.biWidth >SCR_XSIZE_TFT_240_320 | BITMAP_INFO_HEADER1.biHeight > SCR_YSIZE_TFT_240_320)
{ Uart_Printf("The BMP picture is out of the max display range 640*480!! \n\n\n");
ERROR =0;
}
else if(BITMAP_INFO_HEADER1.biBitCount !=16 && BITMAP_INFO_HEADER1.biBitCount !=24 ){
Uart_Printf("The colordepth picture is too low !!! Only support 16BIT(R5G6B5) and 24BIT BMP!!!\n\n");
ERROR =0;
}
else{
Uart_Printf("The size of the picture is %dbyte in %d*%d!\n",BITMAP_FILE_HEADER1.bfSize,BITMAP_INFO_HEADER1.biWidth,BITMAP_INFO_HEADER1.biHeight);
Uart_Printf("The colordepth of the picture is %dbit\n",BITMAP_INFO_HEADER1.biBitCount);
for(bmp_size=0 ; bmp_size<=BITMAP_FILE_HEADER1.bfSize ; )
{
bmp_start_address0 = Load_OneBlockOf_BMP(bmp_start_address0); //装载一页显示缓存
if(BITMAP_INFO_HEADER1.biBitCount == 24) Display_OneBlockOf_BMP_24();
else Display_OneBlockOf_BMP_16();
bmp_size +=512*32;
}
}
} //end if
// =====================[end ]================================
if( ERROR > 0 ) { //移动窗口，显示。
Uart_Printf("The bmp is showed !\n");
// Lcd_MoveViewPort(SCR_XSIZE_TFT_240_320/4,SCR_YSIZE_TFT_240_320/4);
}
else{ Uart_Printf("The bmp is not showed !\n"); }
}
//=============================[加载整个BMP到内存，再到显示缓存的方案]=============================================
void Load_BMP_Whole( U32 bmp_start_address)
{
int bad_block;
int i;
U8* bmp_start_address1 ;
U32 bmp_size;
U32 RAM_BUFFER_offset = 0;
bmp_start_address1 =(U8* )bmp_start_address;
if(bmp_start_address>=0x30000000 & bmp_start_address<=0x34000000 )
{
for(i=0;i<BITMAP_FILE_HEADER1.bfSize;i++) BMP_RAM_BUFFER[i]=*(bmp_start_address1++);
}
else if(bmp_start_address<=0x04000000)
{ for(bmp_size=0 ; bmp_size<=BITMAP_FILE_HEADER1.bfSize ; )
{
bad_block = ReadOneBlockFromNandFlash(bmp_start_address,BMP_RAM_BUFFER+RAM_BUFFER_offset);
bmp_start_address +=512*PAGE_PER_BLOCK*(1 + bad_block);
RAM_BUFFER_offset +=512*PAGE_PER_BLOCK;
bmp_size += 512*PAGE_PER_BLOCK;
}
}
}
void Display_BMP_24(void)
{
U8 blank; // Windows规定一个扫描行所占的字节数必须是4的倍数(即以long为单位),不足的以0填充.这一点相当重要
U16 x0,y0;
U16 RGB_LCD;
U16 i,j;
static RGB_24bit RGB_24bit1;
U32 addr=0;
if((BITMAP_INFO_HEADER1.biWidth*BITMAP_INFO_HEADER1.biBitCount/8) % 4 !=0 )
blank =4- (BITMAP_INFO_HEADER1.biWidth*BITMAP_INFO_HEADER1.biBitCount/8) % 4 ;
else blank=0;
x0 = (SCR_XSIZE_TFT_240_320 - BITMAP_INFO_HEADER1.biWidth)/2; // 求得bmp图片方的起始点，使图片在虚拟显示空间的当中。
y0 = (SCR_YSIZE_TFT_240_320 - BITMAP_INFO_HEADER1.biHeight)/2;
addr = BITMAP_FILE_HEADER1.bfOffBits;
for(i=0;i<BITMAP_INFO_HEADER1.biHeight;i++)
{ for(j=0;j<BITMAP_INFO_HEADER1.biWidth;j++)
{
RGB_24bit1.B = BMP_RAM_BUFFER[addr++];
RGB_24bit1.G = BMP_RAM_BUFFER[addr++];
RGB_24bit1.R = BMP_RAM_BUFFER[addr++];
RGB_LCD = ( RGB_24bit1.B >>3 ) | ((RGB_24bit1.G >>2)<<5) | ((RGB_24bit1.R >>3)<<11);
LCD_BUFER[y0-i+BITMAP_INFO_HEADER1.biHeight-1][x0+j]= RGB_LCD;
}
addr += blank;
}//end for
}
void Display_BMP_16(void)
{
U8 blank; // Windows规定一个扫描行所占的字节数必须是4的倍数(即以long为单位),不足的以0填充.这一点相当重要
U16 x0,y0;
U16 RGB_LCD;
U16 i,j;
static RGB_16bit RGB_16bit1;
U32 addr=0;
if((BITMAP_INFO_HEADER1.biWidth*BITMAP_INFO_HEADER1.biBitCount/8) % 4 !=0 )
blank =4- (BITMAP_INFO_HEADER1.biWidth*BITMAP_INFO_HEADER1.biBitCount/8) % 4 ;
else blank=0;
x0 = (SCR_XSIZE_TFT_240_320 - BITMAP_INFO_HEADER1.biWidth)/2; // 求得bmp图片方的起始点，使图片在虚拟显示空间的当中。
y0 = (SCR_YSIZE_TFT_240_320 - BITMAP_INFO_HEADER1.biHeight)/2;
addr = BITMAP_FILE_HEADER1.bfOffBits;
for(i=0;i<BITMAP_INFO_HEADER1.biHeight;i++)
{
for(j=0;j<BITMAP_INFO_HEADER1.biWidth;j++)
{ RGB_16bit1.first = BMP_RAM_BUFFER[addr++];
RGB_16bit1.second = BMP_RAM_BUFFER[addr++];
RGB_LCD = RGB_16bit1.first | (RGB_16bit1.second <<8);
LCD_BUFER[y0-i+BITMAP_INFO_HEADER1.biHeight-1][x0+j]= RGB_LCD;
}
addr += blank;
}//end for
}
void display_bmp_single(U32 bmp_start_address)
{
U8 ERROR =1 ;
U8 *bmp_address ;
U32 bmp_start_address0;
bmp_start_address0 = bmp_start_address;
Lcd_ClearScr(0xffff);
//==========================[get bmp imformation]===========================================
if(bmp_start_address>=0x30000000 & bmp_start_address<=0x34000000 )
bmp_address = (LPSTR)bmp_start_address;
else if(bmp_start_address<=0x04000000)
{bmp_address = (LPSTR)BMP_RAM_BUFFER;
ReadOnePageFromNandFlash(bmp_start_address,BMP_RAM_BUFFER);
}
else {Uart_Printf("The bmp addresss is out of range !!!"); return;}
Get_Bmp_Imformation(bmp_address);
//==============================[disply]============================
if (BITMAP_FILE_HEADER1.bfType!= 0x4d42) {
Uart_Printf("It is not a BMP picture ! ERROR!!!!! \n\n\n");
ERROR =0;
}
else{
if(BITMAP_INFO_HEADER1.biWidth >SCR_XSIZE_TFT_240_320 | BITMAP_INFO_HEADER1.biHeight > SCR_YSIZE_TFT_240_320)
{ Uart_Printf("The BMP picture is out of the max display range 640*480!! \n\n\n");
ERROR =0;
}
else if(BITMAP_INFO_HEADER1.biBitCount !=16 && BITMAP_INFO_HEADER1.biBitCount !=24 ){
Uart_Printf("The colordepth picture is too low !!! Only support 16BIT(R5G6B5) and 24BIT BMP!!!\n\n");
ERROR =0;
}
else{
Uart_Printf("The size of the picture is %dbyte in %d*%d!\n",BITMAP_FILE_HEADER1.bfSize,BITMAP_INFO_HEADER1.biWidth,BITMAP_INFO_HEADER1.biHeight);
Uart_Printf("The colordepth of the picture is %dbit\n",BITMAP_INFO_HEADER1.biBitCount);
Load_BMP_Whole(bmp_start_address);
if(BITMAP_INFO_HEADER1.biBitCount == 24) Display_BMP_24();
else Display_BMP_16();
}
} //end if
// =====================[end ]================================
if( ERROR > 0 ) { //移动窗口，显示。
Uart_Printf("The bmp is showed !\n");
//Lcd_MoveViewPort(SCR_XSIZE_TFT_240_320/4,SCR_YSIZE_TFT_240_320/4);
}
else{ Uart_Printf("The bmp is not showed !\n"); }
}
//=============================[加载整个BMP到内存，再到显示缓存的方案]=============================================
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