static void readColorProfile(jpeg_decompress_struct* info, ColorProfile& colorProfile)
{
#if USE(ICCJPEG)
JOCTET* profile;
unsigned profileLength;
if (!read_icc_profile(info, &profile, &profileLength))
return;
// 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;
ASSERT(colorProfile.isEmpty());
if (!ignoreProfile)
colorProfile.append(profileData, profileLength);
free(profile);
#endif
}
static void getColorProfile(png_structp png, png_infop info, ColorProfile& colorProfile, bool& sRGB)
{
#ifdef PNG_iCCP_SUPPORTED
ASSERT(colorProfile.isEmpty());
if (png_get_valid(png, info, PNG_INFO_sRGB)) {
sRGB = true;
return;
}
char* profileName;
int compressionType;
#if (PNG_LIBPNG_VER < 10500)
png_charp profile;
#else
png_bytep profile;
#endif
png_uint_32 profileLength;
if (!png_get_iCCP(png, info, &profileName, &compressionType, &profile, &profileLength))
return;
// 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;
if (!ignoreProfile)
colorProfile.append(profileData, profileLength);
#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();
// 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
UNUSED_PARAM(info);
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(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();
}
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
}
void screenColorProfile(ColorProfile& toProfile)
{
WebKit::WebVector<char> profile;
WebKit::Platform::current()->screenColorProfile(&profile);
toProfile.append(profile.data(), profile.size());
}