int main(int argc, char **argv)
{
/* used to read sizes*/
BMPdata bmpData = {0};
unsigned int bytesread = 0;
int j=0;
printf("Starting monochrome bitmap analyzer...\r\n");
if ( argc < 2)
{
printf( "No arguments given! Please provide bmp file name\r\n");
return 0;
}
printf("Opening %s\r\n", argv[1]);
FILE* bmp = fopen(argv[1],"r");
if(bmp==0)
{
printf("Could not open file!\r\n");
return 0;
}
/* seek over BM */
FSEEK_ERROR(bmp, 2, "File does not start with BM");
FREAD_ERROR((void*)&bmpData.filesize,sizeof(unsigned int),1,bmp,"File does not have size");
/* seek over app specific */
FSEEK_ERROR(bmp, 4, "No app specific bytes");
FREAD_ERROR((void*)&bmpData.offset,sizeof(unsigned int),1,bmp,"File does not have pixel offset");
FSEEK_ERROR(bmp, 4, "No app dib header");
FREAD_ERROR((void*)&bmpData.width,sizeof(int),1,bmp,"File does not have width");
FREAD_ERROR((void*)&bmpData.height,sizeof(int),1,bmp,"File does not have height");
FREAD_ERROR((void*)&bmpData.colorplane,sizeof(short),1,bmp,"File does not have colorplane");
FREAD_ERROR((void*)&bmpData.bitsPerPixel,sizeof(short),1,bmp,"File does not have bits per pixel");
FREAD_ERROR((void*)&bmpData.compression,sizeof(unsigned int),1,bmp,"File does not have compression field");
FREAD_ERROR((void*)&bmpData.pixelSize,sizeof(unsigned int),1,bmp,"File does not have pixelsize");
FREAD_ERROR((void*)&bmpData.dpihor,sizeof(unsigned int),1,bmp,"File does not have dpi hor");
FREAD_ERROR((void*)&bmpData.dpiver,sizeof(unsigned int),1,bmp,"File does not have dpi ver");
FREAD_ERROR((void*)&bmpData.colorsInPallete,sizeof(unsigned int),1,bmp,"File does not have # colours in pallete");
FREAD_ERROR((void*)&bmpData.ImportantColors,sizeof(unsigned int),1,bmp,"File does not have important colours");
printf("Filesize: %d bytes \r\n", bmpData.filesize);
printf("Pixeldata starts at: %d %X\r\n", bmpData.offset, bmpData.offset);
printf("Width: %d\r\n", bmpData.width);
printf("Height: %d\r\n", bmpData.height);
printf("Colorplane: %d\r\n", bmpData.colorplane);
printf("Bits Per Pixel: %d\r\n", bmpData.bitsPerPixel);
printf("Compression: %d\r\n", bmpData.compression);
printf("Pixel size: %d bytes %X\r\n", bmpData.pixelSize, bmpData.pixelSize);
printf("DPI horizontal: %u %X\r\n", bmpData.dpihor,bmpData.dpihor);
printf("DPI vertical: %u %X\r\n", bmpData.dpiver,bmpData.dpiver);
printf("Number of colors: %d\r\n", bmpData.colorsInPallete);
printf("Important colors: %d\r\n", bmpData.ImportantColors);
printf("Header Bytes Read: %d\r\n", bytesread);
if(bmpData.bitsPerPixel != 1)
{
printf("WARNING: Image is not a monochrome image! Will try to continue...\r\n");
}
if(bmpData.compression != 0)
{
printf("WARNING: Image has compression! Will try to continue...\r\n");
}
if(bytesread<bmpData.offset)
{
printf("Seeking %d bytes to pixeldata...\r\n",(bmpData.offset-bytesread));
FSEEK_ERROR(bmp, (bmpData.offset-bytesread), "No pixeldata found");
}
else if(bytesread>bmpData.offset)
{
printf("WARNING: Image header too small! Will try to continue...\r\n");
}
/* get number of bytes we need from each row */
int widthPixBytes = bmpData.width/8 + ((bmpData.width%8)?1:0);
printf("Each row has %d bytes of pixeldata\r\n", widthPixBytes);
/* get number of bytes for each row with padding */
int totalWidth = widthPixBytes + ((widthPixBytes%4)?(4-(widthPixBytes%4)):0);
printf("Each row with padding is %d bytes\r\n", totalWidth);
/* since bmp is upside down malloc memory to fill array upside down */
char* pixelBuff = malloc(widthPixBytes*bmpData.height);
if(pixelBuff == NULL)
{
printf("Error: Could not allocate memory for pixel buffer!");
return 0;
}
/* address the pointer to the last row */
char* rowPointer = pixelBuff+(widthPixBytes*(bmpData.height-1));
int pixelByte;
int columnoffset = 0;
int pixelBytesRead = 0;
while(((pixelByte = fgetc(bmp)) != EOF) && pixelBytesRead<(totalWidth*bmpData.height))
{
pixelBytesRead++;
columnoffset++;
if(columnoffset<=widthPixBytes)
{
rowPointer[columnoffset-1] = pixelByte;
}
if(columnoffset>=totalWidth)
{
/* move pointer to next row*/
rowPointer -= (widthPixBytes);
columnoffset=0;
}
}
/* Draw the image on the screen and generate the output file */
FILE* outputFile = NULL;
if ( argc < 3)
{
printf( "No output arguments given! will not generate output file\r\n");
}
else
{
outputFile = fopen(argv[2],"w");
if(outputFile==NULL)
{
printf("ERROR: Could not open output file for writing!\r\n");
}
else
{
fprintf(outputFile,"/* Image data for %s %dx%d */\r\n", argv[1], bmpData.width, bmpData.height);
fprintf(outputFile,"/* Generated by MonochromeBMP2Array */\r\n");
fprintf(outputFile,"/* Source code available at https://github.com/Krugaroo/MonochromeBMP2Array */\r\n");
fprintf(outputFile,"/*\r\n");
}
}
unsigned char pixelByteDraw;
columnoffset=0;
pixelBytesRead=0;
/* Draw the image on screen and to the file */
if(bmpData.width<200)
{
do
{
pixelByteDraw = *(pixelBuff+pixelBytesRead);
if(columnoffset<widthPixBytes)
{
for(j=1;j<=8;j++)
{
if(pixelByteDraw&(1<<(8-j)))
{
printf("*");
if(outputFile!=NULL)
{
fprintf(outputFile,"*");
}
}
else
{
printf(" ");
if(outputFile!=NULL)
{
fprintf(outputFile," ");
}
}
}
}
pixelBytesRead++;
columnoffset++;
if(columnoffset==widthPixBytes)
{
if(outputFile!=NULL)
{
fprintf(outputFile,"\r\n");
}
columnoffset=0;
printf("\r\n");
}
} while (pixelBytesRead<widthPixBytes*bmpData.height);
}
else
{
printf("Image is wider than 200px and is therefore not drawn!\r\n");
if(outputFile!=NULL)
{
fprintf(outputFile,"\r\nImage is wider than 200px and is therefore not drawn!\r\n");
}
}
if(outputFile!=NULL)
{
fprintf(outputFile,"*/\r\n");
}
columnoffset=0;
pixelBytesRead=0;
/* Generate the array and data to file */
if(outputFile!=NULL)
{
fprintf(outputFile,"\r\n/* Image data */\r\n");
fprintf(outputFile,"unsigned int ImgWidthBytes = %d;\r\n", widthPixBytes);
fprintf(outputFile,"unsigned int ImgWidthPixels = %d;\r\n", bmpData.width);
fprintf(outputFile,"unsigned int ImgHeightPixels = %d;\r\n", bmpData.height);
fprintf(outputFile,"unsigned int ImgTotalBytes = %d;\r\n\r\n", widthPixBytes*bmpData.height);
fprintf(outputFile,"const char ImgArray[] = {\r\n");
}
do
{
pixelByteDraw = *(pixelBuff+pixelBytesRead);
if(columnoffset<widthPixBytes)
{
if(outputFile!=NULL)
{
fprintf(outputFile,"0x%02X,", pixelByteDraw);
}
}
pixelBytesRead++;
columnoffset++;
if(columnoffset==widthPixBytes)
{
if(outputFile!=NULL && pixelBytesRead<widthPixBytes*bmpData.height)
{
fprintf(outputFile,"\r\n");
}
columnoffset=0;
}
printf("\rProgress: %3d %%", pixelBytesRead*100/(widthPixBytes*bmpData.height));
} while (pixelBytesRead<widthPixBytes*bmpData.height);
if(outputFile!=NULL)
{
fprintf(outputFile,"\r\n};\r\n\r\n");
}
/* Free the allocated buffer */
free(pixelBuff);
printf("\r\nFile written to %s.\r\n", argv[2]);
printf("All done\r\n");
return 0;
}
int main(int argc, char **argv) {
FILE *lfile=NULL, *infile ;
int wantline, currline, furthest, c ;
size_t maxlinelength=0, maxnlines ;
long *linepos ;
char *line=NULL ; /* getline automatically mallocs and reallocs it */
while((c = getopt(argc, argv, "f:")) != -1) {
switch(c) {
case 'f':
lfile = fopen(optarg, "r") ;
break ;
case '?':
usage() ;
}
}
if(lfile == NULL) usage() ;
maxnlines = 1e3 ;
linepos = (long *) malloc(maxnlines * sizeof(long)) ;
for(c = 0 ; c < maxnlines ; c++) linepos[c] = -9 ;
infile = stdin ; // NB can't use fseek with a pipe! See FSEEK_ERROR above.
currline = furthest = 0 ;
while( fscanf(lfile, "%d", &wantline) == 1) {
/* Each time this loop is entered we have a new wantline, and
the task is to find it and print it */
wantline-- ; // indexing from 1 in shell
linepos[currline] = ftell(infile) ;
/* First check whether we need to rewind to get to wantline */
if(wantline < currline) {
if( fseek(infile, linepos[wantline] - linepos[currline], SEEK_CUR) != 0 )
FSEEK_ERROR() ;
if( getline(&line, &maxlinelength, infile) < 0 )
ERROR("Failed to read new line (reached end of file?)") ;
printf("%s", line) ;
currline = wantline ;
continue ;
}
/* We're either at wantline or it's ahead of us */
if(furthest > currline) { /* If we've already been further than this point,
than we can fast-forward. */
if(wantline <= furthest) { /* we've been past it previously, but
subsequently did a rewind: fast-forward to it,
print it and skip to next wantline */
if( fseek(infile, linepos[wantline] - linepos[currline], SEEK_CUR) != 0 )
FSEEK_ERROR() ;
if( getline(&line, &maxlinelength, infile) < 0 )
ERROR("Failed to read new line (reached end of file?)") ;
printf("%s", line) ;
currline = wantline + 1 ;
continue ;
}
/* Wantline is further than we've been before:
fast-forward to our furthest point, then start
advancing line-by-line */
if( fseek(infile, linepos[furthest] - linepos[currline], SEEK_CUR) != 0 )
FSEEK_ERROR() ;
currline = furthest ;
}
/* Now we're going beyond where we've been before. So advance
line-by-line, storing the positions of the new lines, until
we find wantline */
while(wantline > currline) {
if( getline(&line, &maxlinelength, infile) < 0 )
ERROR("Failed to read new line (reached end of file?)") ;
currline++ ;
if(currline > maxnlines) {
maxnlines *= 2 ;
linepos = realloc(linepos, maxnlines * sizeof(long)) ;
}
linepos[currline] = ftell(infile) ;
}
/* We're at wantline */
assert(currline == wantline) ;
if( getline(&line, &maxlinelength, infile) < 0)
ERROR("Failed to read next line") ;
printf("%s", line) ;
currline++ ;
if(currline > maxnlines) {
maxnlines *= 2 ;
linepos = realloc(linepos, maxnlines * sizeof(long)) ;
}
furthest = MAX(furthest, currline) ;
}
fclose(infile) ;
fclose(lfile) ;
free(line) ;
free(linepos) ;
return 0 ;
}
