//----------------------------------------------------------------------------
bool SaveBMP32 (const std::string& name, const Image2<PixelBGRA8>& image)
{
FILE* outFile = fopen(name.c_str(), "wb");
if (!outFile)
{
assertion(false, "Cannot open file '%s' for write.\n", name.c_str());
return false;
}
const int numPixels = image.GetNumPixels();
const int numBytes = 4*image.GetNumPixels();
const int size = sizeOfBitMapFileHeader + sizeOfBitMapInfoHeader;
PrivateBitMapFileHeader fileHeader;
fileHeader.bfType = 0x4d42;
fileHeader.bfSize = size + numBytes;
fileHeader.bfReserved1 = 0;
fileHeader.bfReserved2 = 0;
fileHeader.bfOffBits = size;
size_t numWritten = fwrite(&fileHeader.bfType, sizeof(unsigned short),
1, outFile);
if (numWritten != 1)
{
assertion(false, "Failed to write (bfType).\n");
fclose(outFile);
return false;
}
numWritten = fwrite(&fileHeader.bfSize, sizeof(unsigned long), 1,
outFile);
if (numWritten != 1)
{
assertion(false, "Failed to write (bfSize).\n");
fclose(outFile);
return false;
}
numWritten = fwrite(&fileHeader.bfReserved1, sizeof(unsigned short), 1,
outFile);
if (numWritten != 1)
{
assertion(false, "Failed to write (bfReserved1).\n");
fclose(outFile);
return false;
}
numWritten = fwrite(&fileHeader.bfReserved2, sizeof(unsigned short), 1,
outFile);
if (numWritten != 1)
{
assertion(false, "Failed to write (bfReserved2).\n");
fclose(outFile);
return false;
}
numWritten = fwrite(&fileHeader.bfOffBits, sizeof(unsigned long), 1,
outFile);
if (numWritten != 1)
{
assertion(false, "Failed to write (bfOffBits).\n");
fclose(outFile);
return false;
}
PrivateBitMapInfoHeader infoHeader;
infoHeader.biSize = sizeOfBitMapInfoHeader;
infoHeader.biWidth = image.GetDimension(0);
infoHeader.biHeight = image.GetDimension(1);
infoHeader.biPlanes = 1;
infoHeader.biBitCount = 32;
infoHeader.biCompression = BI_RGB;
infoHeader.biSizeImage = 0;
infoHeader.biXPelsPerMeter = 0;
infoHeader.biYPelsPerMeter = 0;
infoHeader.biClrUsed = 0;
infoHeader.biClrImportant = 0;
numWritten = fwrite(&infoHeader, sizeOfBitMapInfoHeader, 1, outFile);
if (numWritten != 1)
{
assertion(false, "Failed to write (infoHeader).\n");
fclose(outFile);
return false;
}
PixelBGRA8* source = image.GetPixels1D();
numWritten = fwrite(source, sizeof(PixelBGRA8), numPixels, outFile);
if (numWritten != (size_t)numPixels)
{
assertion(false, "Failed to write (source).\n");
fclose(outFile);
return false;
}
fclose(outFile);
return true;
}
