int libraw_get_decoder_info(libraw_data_t* lr,libraw_decoder_info_t *d)
{
if(!lr || !d) return EINVAL;
LibRaw *ip = (LibRaw*) lr->parent_class;
return ip->get_decoder_info(d);
}
bool
RawInput::open (const std::string &name, ImageSpec &newspec,
const ImageSpec &config)
{
int ret;
// open the image
if ( (ret = m_processor.open_file(name.c_str()) ) != LIBRAW_SUCCESS) {
error ("Could not open file \"%s\", %s", name.c_str(), libraw_strerror(ret));
return false;
}
if ( (ret = m_processor.unpack() ) != LIBRAW_SUCCESS) {
error ("Could not unpack \"%s\", %s",name.c_str(), libraw_strerror(ret));
return false;
}
// Forcing the Libraw to adjust sizes based on the capture device orientation
m_processor.adjust_sizes_info_only();
// Set file information
m_spec = ImageSpec(m_processor.imgdata.sizes.iwidth,
m_processor.imgdata.sizes.iheight,
3, // LibRaw should only give us 3 channels
TypeDesc::UINT16);
// Output 16 bit images
m_processor.imgdata.params.output_bps = 16;
// Set the gamma curve to Linear
m_spec.attribute("oiio:ColorSpace","Linear");
m_processor.imgdata.params.gamm[0] = 1.0;
m_processor.imgdata.params.gamm[1] = 1.0;
// Check to see if the user has explicitly set the output colorspace primaries
std::string cs = config.get_string_attribute ("raw:ColorSpace", "sRGB");
if (cs.size()) {
static const char *colorspaces[] = { "raw",
"sRGB",
"Adobe",
"Wide",
"ProPhoto",
"XYZ", NULL
};
size_t c;
for (c=0; c < sizeof(colorspaces) / sizeof(colorspaces[0]); c++)
if (cs == colorspaces[c])
break;
if (cs == colorspaces[c])
m_processor.imgdata.params.output_color = c;
else {
error("raw:ColorSpace set to unknown value");
return false;
}
// Set the attribute in the output spec
m_spec.attribute("raw:ColorSpace", cs);
} else {
// By default we use sRGB primaries for simplicity
m_processor.imgdata.params.output_color = 1;
m_spec.attribute("raw:ColorSpace", "sRGB");
}
// Exposure adjustment
float exposure = config.get_float_attribute ("raw:Exposure", -1.0f);
if (exposure >= 0.0f) {
if (exposure < 0.25f || exposure > 8.0f) {
error("raw:Exposure invalid value. range 0.25f - 8.0f");
return false;
}
m_processor.imgdata.params.exp_correc = 1; // enable exposure correction
m_processor.imgdata.params.exp_shift = exposure; // set exposure correction
// Set the attribute in the output spec
m_spec.attribute ("raw:Exposure", exposure);
}
// Interpolation quality
// note: LibRaw must be compiled with demosaic pack GPL2 to use
// demosaic algorithms 5-9. It must be compiled with demosaic pack GPL3 for
// algorithm 10. If either of these packs are not includeded, it will silently use option 3 - AHD
std::string demosaic = config.get_string_attribute ("raw:Demosaic");
if (demosaic.size()) {
static const char *demosaic_algs[] = { "linear",
"VNG",
"PPG",
"AHD",
"DCB",
"Modified AHD",
"AFD",
"VCD",
"Mixed",
"LMMSE",
"AMaZE",
// Future demosaicing algorithms should go here
NULL
};
size_t d;
for (d=0; d < sizeof(demosaic_algs) / sizeof(demosaic_algs[0]); d++)
if (demosaic == demosaic_algs[d])
break;
if (demosaic == demosaic_algs[d])
m_processor.imgdata.params.user_qual = d;
else if (demosaic == "none") {
// See if we can access the Bayer patterned data for this raw file
libraw_decoder_info_t decoder_info;
m_processor.get_decoder_info(&decoder_info);
if (!(decoder_info.decoder_flags & LIBRAW_DECODER_FLATFIELD)) {
error("Unable to extract unbayered data from file \"%s\"", name.c_str());
return false;
}
// User has selected no demosaicing, so no processing needs to be done
m_process = false;
// The image width and height may be different now, so update with new values
// Also we will only be reading back a single, bayered channel
m_spec.width = m_processor.imgdata.sizes.raw_width;
m_spec.height = m_processor.imgdata.sizes.raw_height;
m_spec.nchannels = 1;
m_spec.channelnames.clear();
m_spec.channelnames.push_back("R");
// Also, any previously set demosaicing options are void, so remove them
m_spec.erase_attribute("oiio:Colorspace", TypeDesc::STRING);
m_spec.erase_attribute("raw:Colorspace", TypeDesc::STRING);
m_spec.erase_attribute("raw:Exposure", TypeDesc::STRING);
}
else {
error("raw:Demosaic set to unknown value");
return false;
}
// Set the attribute in the output spec
m_spec.attribute("raw:Demosaic", demosaic);
} else {
m_processor.imgdata.params.user_qual = 3;
m_spec.attribute("raw:Demosaic", "AHD");
}
// Metadata
const libraw_image_sizes_t &sizes (m_processor.imgdata.sizes);
m_spec.attribute ("PixelAspectRatio", (float)sizes.pixel_aspect);
// FIXME: sizes. top_margin, left_margin, raw_pitch, flip, mask?
const libraw_iparams_t &idata (m_processor.imgdata.idata);
if (idata.make[0])
m_spec.attribute ("Make", idata.make);
if (idata.model[0])
m_spec.attribute ("Model", idata.model);
// FIXME: idata. dng_version, is_foveon, colors, filters, cdesc
const libraw_colordata_t &color (m_processor.imgdata.color);
m_spec.attribute("Exif:Flash", (int) color.flash_used);
if (color.model2[0])
m_spec.attribute ("Software", color.model2);
// FIXME -- all sorts of things in this struct
const libraw_imgother_t &other (m_processor.imgdata.other);
m_spec.attribute ("Exif:ISOSpeedRatings", (int) other.iso_speed);
m_spec.attribute ("ExposureTime", other.shutter);
m_spec.attribute ("Exif:ShutterSpeedValue", -log2f(other.shutter));
m_spec.attribute ("FNumber", other.aperture);
m_spec.attribute ("Exif:ApertureValue", 2.0f * log2f(other.aperture));
m_spec.attribute ("Exif:FocalLength", other.focal_len);
struct tm * m_tm = localtime(&m_processor.imgdata.other.timestamp);
char datetime[20];
strftime (datetime, 20, "%Y-%m-%d %H:%M:%S", m_tm);
m_spec.attribute ("DateTime", datetime);
// FIXME: other.shot_order
// FIXME: other.gpsdata
if (other.desc[0])
m_spec.attribute ("ImageDescription", other.desc);
if (other.artist[0])
m_spec.attribute ("Artist", other.artist);
// FIXME -- thumbnail possibly in m_processor.imgdata.thumbnail
read_tiff_metadata (name);
// Copy the spec to return to the user
newspec = m_spec;
return true;
}
