trmnl/bb_epaper
0
0
Fork 0
mirror of https://github.com/usetrmnl/bb_epaper.git synced 2026-04-29 13:43:26 -07:00
Code Issues Packages Projects Releases Wiki Activity

Updated image convert tool to optionally generate .h hex data as output

Browse Source
This commit is contained in:
Laurence Bank
2025-01-04 12:34:32 +00:00
parent 520f15fdc0
commit af1d995b49
1 changed files with 48 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
imageconvert/main.c
+48 -3
View File
@@ -90,18 +90,57 @@ uint8_t * ReadBMP(const char *fname, int *width, int *height, int *bpp, unsigned
} /* ReadBMP() */
//
// Create the comments and const array boilerplate for the hex data bytes
//
void StartHexFile(FILE *f, int iLen, int w, int h, const char *fname)
{
int i;
char szTemp[256];
fprintf(f, "//\n// Created with imageconvert, written by Larry Bank\n");
fprintf(f, "// %d x %d x 1-bit per pixel\n", w, h);
fprintf(f, "// compressed image data size = %d bytes\n//\n", iLen);
strcpy(szTemp, fname);
i = strlen(szTemp);
if (szTemp[i-2] == '.') szTemp[i-2] = 0; // get the leaf name for the data
fprintf(f, "const uint8_t %s[] = {\n", szTemp);
} /* StartHexFile() */
//
// Add N bytes of hex data to the output
// The data will be arranged in rows of 16 bytes each
//
void AddHexBytes(FILE *f, void *pData, int iLen, int bLast)
{
static int iCount = 0; // number of bytes processed so far
int i;
uint8_t *s = (uint8_t *)pData;
for (i=0; i<iLen; i++) { // process the given data
fprintf(f, "0x%02x", *s++);
iCount++;
if (i < iLen-1 || !bLast) fprintf(f, ",");
if ((iCount & 15) == 0) fprintf(f, "\n"); // next row of 16
}
if (bLast) {
fprintf(f, "};\n");
}
} /* AddHexBytes() */
int main(int argc, const char * argv[]) {
uint8_t *pBMP, *pOut;
int rc, w, h, y, bpp;
int iOutSize, iPitch;
G5ENCIMAGE g5enc;
BB_BITMAP bbbm;
int bHFile; // flag indicating if the output will be a .H file of hex data
printf("Group5 image conversion tool\n");
if (argc != 3) {
printf("Usage: ./imgconvert <WinBMP image> <g5 compressed image>\n");
return -1;
}
pOut = (uint8_t *)argv[2] + strlen(argv[2]) - 1;
bHFile = (pOut[0] == 'H' || pOut[0] == 'h'); // output an H file?
pBMP = ReadBMP(argv[1], &w, &h, &bpp, NULL);
if (bpp == 1) {
uint8_t *s = pBMP;
@@ -128,8 +167,14 @@ int main(int argc, const char * argv[]) {
if (!f) {
printf("Error opening: %s\n", argv[2]);
} else {
fwrite(&bbbm, 1, sizeof(BB_BITMAP), f);
fwrite(pOut, 1, iOutSize, f);
if (bHFile) { // generate HEX file to include in a project
StartHexFile(f, iOutSize+sizeof(BB_BITMAP), w, h, argv[2]);
AddHexBytes(f, &bbbm, sizeof(BB_BITMAP), 0);
AddHexBytes(f, pOut, iOutSize, 1);
} else { // generate a binary file
fwrite(&bbbm, 1, sizeof(BB_BITMAP), f);
fwrite(pOut, 1, iOutSize, f);
}
fflush(f);
fclose(f);
}