bmp2rgb

//#define ALIGNMENT_FIX

typedef struct _bitmap_file_header bitmap_file_header; struct _bitmap_file_header {

unsigned short Type; unsigned int Size; unsigned short Reserved1; unsigned short Reserved2; unsigned int OffSet; };

typedef struct _bitmap_info_header bitmap_info_header; struct _bitmap_info_header {

unsigned int Size; long Width; long Height; short int Planes; short int BitCount; unsigned int Compression; unsigned int SizeImage; long XPelsPerMeter; long YPelsPerMeter; unsigned int ClrUsed;

unsigned int ClrImportant; };

int main(int argc, char* argv[]) {

#ifdef ALIGNMENT_FIX int pre_append_bytes; int post_append_bytes; #endif int i,j;

int bytes_per_line; int end_fix_byte;

unsigned char read_byte[3]; unsigned short int write_data; char write_string[11]; char file_name[1024];

bitmap_file_header is_file_header; bitmap_info_header is_info_header; FILE *fp; FILE *out_fp;

if (argc != 3) {

printf(\"bmp24_to565.exe input.bmp output.hex\\n\"); return -1; }

memset(file_name,0,1024);

sprintf(file_name,\"./%s\",argv[1]); fp = fopen(file_name,\"rb\"); if (NULL == fp) {

printf(\"can't open file:%s\",file_name); return -1; }

/* 读取文件头 */

fread(&is_file_header.Type,sizeof(is_file_header.Type),1,fp); fread(&is_file_header.Size,sizeof(is_file_header.Size),1,fp);

fread(&is_file_header.Reserved1,sizeof(is_file_header.Reserved1),1,fp); fread(&is_file_header.Reserved2,sizeof(is_file_header.Reserved2),1,fp); fread(&is_file_header.OffSet,sizeof(is_file_header.OffSet),1,fp);

if (0x4d42 != is_file_header.Type) {

printf(\"not support file format\\n\"); return -1; }

/* 读取信息头 */

fread(&is_info_header,sizeof(is_info_header),1,fp);

/* 类型判断*/

if(24 != is_info_header.BitCount) {

printf(\"only support 24 deep bitmap\\n\"); return -1; }

/* 有无调色板 */

if(0 != is_info_header.ClrUsed) {

printf(\"only support 24 deep bitmap without color plant\\n\"); return -1; }

/* 是否压缩 */

if(0 != is_info_header.Compression) {

printf(\"not support Compression bitmap\\n\"); return -1; }

#ifdef ALIGNMENT_FIX

/* 原24bbp补齐的字节数，为4则没有补齐*/ pre_append_bytes = 4 - ((is_info_header.Width * 3) % 4);

/* 补齐的字节术，为4则不需要补齐*/

post_append_bytes = 4 - ((is_info_header.Width * 2) % 4); #endif

/* open to write */ memset(file_name,0,1024); sprintf(file_name,\"./%s\",argv[2]); out_fp = fopen(file_name,\"w\"); if (NULL == out_fp) {

printf(\"can't open file:%s\",file_name); return -1; }

if (0 == ((is_info_header.Width * 3) % 4)) bytes_per_line = (is_info_header.Width * 3); else

bytes_per_line = (is_info_header.Width * 3) + (4 - (is_info_header.Width * 3) % 4);

/* convert data */

for (i=0; i/* 倒序存储修正*/

end_fix_byte = is_info_header.SizeImage - is_info_header.Height * bytes_per_line;

fseek(fp,-(bytes_per_line * (i+1) + end_fix_byte),SEEK_END);

for (j=0; jfread(&read_byte,3,1,fp); /* 24 -> 16 */

write_data = (read_byte[0] >> 3) | ((read_byte[1] & 0xFC) << 3) | ((read_byte[2] & 0xF8) << 8); read_byte[0] = write_data; read_byte[1] = write_data >> 8;

sprintf(write_string,\"0x%02x,0x%02x,\",read_byte[0],read_byte[1]); fwrite(write_string,10,1,out_fp); }

#ifdef ALIGNMENT_FIX /* 24bbp 是否有补齐的bytes */ if (4 != pre_append_bytes) {

fread(&read_byte,pre_append_bytes,1,fp); /* 跳过补全的0x00 */ } /* 生成的RGB565是否需要对齐*/ if (4 != post_append_bytes) { /* RGB565 只可能补一个 0x0000*/ /* 调试发现输出不需要补齐*/ sprintf(write_string,\"0x00,0x00,\"); fwrite(write_string,10,1,out_fp); } #endif } fclose(fp); fclose(out_fp); return 0; } 批量转换脚本 #!/usr/bin/env python import os,re,subprocess filelist=os.listdir(os.getcwd()) test = re.compile(\"\\.[bB][mM][pP]$\", re.IGNORECASE) bmpfiles = filter(test.search, filelist) for file in bmpfiles: subprocess.Popen('bmp24_to565.exe %s %shex' %(file,file[:-3]), shell=True)