static ColorProfile readColorProfile(jpeg_decompress_struct* info)
{
#if USE(ICCJPEG)
JOCTET* profile;
unsigned int profileLength;
if (!read_icc_profile(info, &profile, &profileLength))
return ColorProfile();
// Only accept RGB color profiles from input class devices.
bool ignoreProfile = false;
char* profileData = reinterpret_cast<char*>(profile);
if (profileLength < ImageDecoder::iccColorProfileHeaderLength)
ignoreProfile = true;
else if (!ImageDecoder::rgbColorProfile(profileData, profileLength))
ignoreProfile = true;
else if (!ImageDecoder::inputDeviceColorProfile(profileData, profileLength))
ignoreProfile = true;
ColorProfile colorProfile;
if (!ignoreProfile)
colorProfile.append(profileData, profileLength);
free(profile);
return colorProfile;
#else
return ColorProfile();
#endif
}
static ColorProfile readColorProfile(jpeg_decompress_struct* info)
{
#if USE(ICCJPEG)
JOCTET* profile;
unsigned int profileLength;
if (!read_icc_profile(info, &profile, &profileLength))
return ColorProfile();
char* profileData = reinterpret_cast<char*>(profile);
// Images with grayscale profiles get "upsampled" by libjpeg. If we use
// their color profile, CoreGraphics will "upsample" them
// again, resulting in horizontal distortions.
if (profileLength >= 20 && !memcmp(&profileData[16], "GRAY", 4)) {
free(profile);
return ColorProfile();
}
ColorProfile colorProfile;
colorProfile.append(profileData, profileLength);
free(profile);
return colorProfile;
#else
return ColorProfile();
#endif
}
static ColorProfile readColorProfile(jpeg_decompress_struct* info)
{
#if USE(ICCJPEG)
JOCTET* profile;
unsigned int profileLength;
if (!read_icc_profile(info, &profile, &profileLength))
return ColorProfile();
ColorProfile colorProfile;
colorProfile.append(reinterpret_cast<char*>(profile), profileLength);
free(profile);
return colorProfile;
#else
return ColorProfile();
#endif
}
static ColorProfile readColorProfile(png_structp png, png_infop info)
{
#ifdef PNG_iCCP_SUPPORTED
char* profileName;
int compressionType;
char* profile;
png_uint_32 profileLength;
if (png_get_iCCP(png, info, &profileName, &compressionType, &profile, &profileLength)) {
ColorProfile colorProfile;
colorProfile.append(profile, profileLength);
return colorProfile;
}
#endif
return ColorProfile();
}
