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This commit is contained in:
Martin Preuss
2025-12-15 21:12:51 +01:00
parent 06f006ee42
commit 636fc026aa
13 changed files with 376 additions and 2 deletions
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66
apps/aqhome-tool/image/readbmp.c
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@@ -67,6 +67,7 @@ static int AQH_Tool_ReadAndDumpBmpFile(const char *fname);
static int AQH_Tool_ExportBmpFile(const char *fname);
static int _exportBmp_1bpp(const BMP_FILE *bf);
static int _exportBmp_gray8bpp(const BMP_FILE *bf);
static BMP_FILEHEADER *_fileHeader_new();
static void _fileHeader_free(BMP_FILEHEADER *fh);
@@ -166,6 +167,8 @@ int AQH_Tool_ExportBmpFile(const char *fname)
_dumpBmpImageHeader(bf->imageHeader);
if (bf->imageHeader->bitsPerPixel==1)
rv=_exportBmp_1bpp(bf);
else if (bf->imageHeader->bitsPerPixel==8)
rv=_exportBmp_gray8bpp(bf);
else {
fprintf(stderr, "Invalid bits per pixel (%d)", bf->imageHeader->bitsPerPixel);
rv=2;
@@ -220,6 +223,69 @@ int _exportBmp_1bpp(const BMP_FILE *bf)
int _exportBmp_gray8bpp(const BMP_FILE *bf)
{
const uint8_t *ptrBuffer;
uint32_t lenBuffer;
uint32_t offsPixels;
const uint8_t *ptrPixels;
int imageWidth;
int imageHeight;
int rowWidthInBytes;
int columns;
int y;
ptrBuffer=(const uint8_t *) GWEN_Buffer_GetStart(bf->buffer);
lenBuffer=GWEN_Buffer_GetUsedBytes(bf->buffer);
offsPixels=bf->fileHeader->offsPixels;
ptrPixels=ptrBuffer+offsPixels;
imageWidth=bf->imageHeader->imgWidth;
imageHeight=bf->imageHeader->imgHeight;
columns=imageWidth;
rowWidthInBytes=4*((columns+3)/4); /* BMPs have multiple of 4 bytes per row! */
fprintf(stdout, "imgData: \n");
fprintf(stdout, " .dw %d, %d\n", imageWidth, imageHeight);
for (y=imageHeight-1; y>=0; y--) {
const uint8_t *rowPtr;
int x;
uint8_t currentByte=0;
int writtenBytes=0;
int packedPixels=0;
fprintf(stdout, " .db ");
rowPtr=ptrPixels+(y*rowWidthInBytes);
for (x=0; x<columns; x++) {
uint8_t pixel;
uint8_t newPix;
pixel=rowPtr[x];
switch(pixel) {
case 0x00: newPix=0b01; break; /* outline color */
case 0x60: newPix=0b10; break; /* color 1 */
case 0xc0: newPix=0b11; break; /* color 2 */
case 0xff: newPix=0b00; break; /* background color */
default: newPix=0b00; break; /* background color */
}
currentByte<<=2;
currentByte|=newPix;
packedPixels++;
if (packedPixels==4) {
if (writtenBytes)
fprintf(stdout, ", ");
fprintf(stdout, "0x%02x", currentByte);
writtenBytes++;
packedPixels=0;
currentByte=0;
}
}
fprintf(stdout, "\n");
}
return 0;
}
BMP_FILE *BMP_File_new(const char *fname)