Files
DarkRoom/third_party/rawler-0.7.2/src/decoders/nef.rs
T
dtourolle 77a1925bac Vendor rawler 0.7.2 unmodified
The crate as crates.io publishes it, minus .cargo-ok, its Cargo.lock and
data/testdata (13 MB of sample files only its own tests read). Not yet
routed through [patch.crates-io]; the next commit is the patch.
2026-09-27 17:33:19 -04:00

818 lines
31 KiB
Rust

use image::DynamicImage;
use log::debug;
use log::warn;
use serde::Deserialize;
use serde::Serialize;
use crate::RawImage;
use crate::RawLoader;
use crate::RawlerError;
use crate::Result;
use crate::alloc_image_ok;
use crate::analyze::FormatDump;
use crate::bits::BEu16;
use crate::bits::BEu32;
use crate::bits::Endian;
use crate::bits::LEu32;
use crate::bits::LookupTable;
use crate::bits::clampbits;
use crate::buffer::PaddedBuf;
use crate::decoders::decode_threaded;
use crate::decoders::dynamic_image_from_ifd;
use crate::decoders::dynamic_image_from_jpeg_interchange_format;
use crate::decoders::nef::lensdata::NefLensData;
use crate::decompressors::ljpeg::huffman::HuffTable;
use crate::exif::Exif;
use crate::formats::tiff::GenericTiffReader;
use crate::formats::tiff::IFD;
use crate::formats::tiff::Value;
use crate::formats::tiff::ifd::OffsetMode;
use crate::formats::tiff::reader::TiffReader;
use crate::imgop::Dim2;
use crate::imgop::Point;
use crate::imgop::Rect;
use crate::lens::LensDescription;
use crate::lens::LensResolver;
use crate::packed::*;
use crate::pixarray::PixU16;
use crate::pumps::BitPump;
use crate::pumps::BitPumpMSB;
use crate::pumps::ByteStream;
use crate::rawimage::CFAConfig;
use crate::rawimage::RawPhotometricInterpretation;
use crate::rawimage::WhiteLevel;
use crate::rawsource::RawSource;
use crate::tags::ExifTag;
use crate::tags::TiffCommonTag;
use super::BlackLevel;
use super::Camera;
use super::Decoder;
use super::FormatHint;
use super::RawDecodeParams;
use super::RawMetadata;
mod decrypt;
pub mod lensdata;
const NIKON_F_MOUNT: &str = "F-mount";
const NIKON_Z_MOUNT: &str = "Z-mount";
// NEF Huffman tables in order. First two are the normal huffman definitions.
// Third one are weird shifts that are used in the lossy split encodings only
// Values are extracted from dcraw with the shifts unmangled out.
const NIKON_TREE: [[[u8; 16]; 3]; 6] = [
[
// 12-bit lossy
[0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 2, 0, 0, 0, 0, 0],
[5, 4, 3, 6, 2, 7, 1, 0, 8, 9, 11, 10, 12, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
],
[
// 12-bit lossy after split
[0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 2, 0, 0, 0, 0, 0],
[6, 5, 5, 5, 5, 5, 4, 3, 2, 1, 0, 11, 12, 12, 0, 0],
[3, 5, 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
],
[
// 12-bit lossless
[0, 0, 1, 4, 2, 3, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0],
[5, 4, 6, 3, 7, 2, 8, 1, 9, 0, 10, 11, 12, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
],
[
// 14-bit lossy
[0, 0, 1, 4, 3, 1, 1, 1, 1, 1, 2, 0, 0, 0, 0, 0],
[5, 6, 4, 7, 8, 3, 9, 2, 1, 0, 10, 11, 12, 13, 14, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
],
[
// 14-bit lossy after split
[0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 1, 2, 0, 0, 0, 0],
[8, 7, 7, 7, 7, 7, 6, 5, 4, 3, 2, 1, 0, 13, 14, 0],
[0, 5, 4, 3, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
],
[
// 14-bit lossless
[0, 0, 1, 4, 2, 2, 3, 1, 2, 0, 0, 0, 0, 0, 0, 0],
[7, 6, 8, 5, 9, 4, 10, 3, 11, 12, 2, 0, 1, 13, 14, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
],
];
// We use this for the D50 and D2X whacky WB "encryption"
const WB_SERIALMAP: [u8; 256] = [
0xc1, 0xbf, 0x6d, 0x0d, 0x59, 0xc5, 0x13, 0x9d, 0x83, 0x61, 0x6b, 0x4f, 0xc7, 0x7f, 0x3d, 0x3d, 0x53, 0x59, 0xe3, 0xc7, 0xe9, 0x2f, 0x95, 0xa7, 0x95, 0x1f,
0xdf, 0x7f, 0x2b, 0x29, 0xc7, 0x0d, 0xdf, 0x07, 0xef, 0x71, 0x89, 0x3d, 0x13, 0x3d, 0x3b, 0x13, 0xfb, 0x0d, 0x89, 0xc1, 0x65, 0x1f, 0xb3, 0x0d, 0x6b, 0x29,
0xe3, 0xfb, 0xef, 0xa3, 0x6b, 0x47, 0x7f, 0x95, 0x35, 0xa7, 0x47, 0x4f, 0xc7, 0xf1, 0x59, 0x95, 0x35, 0x11, 0x29, 0x61, 0xf1, 0x3d, 0xb3, 0x2b, 0x0d, 0x43,
0x89, 0xc1, 0x9d, 0x9d, 0x89, 0x65, 0xf1, 0xe9, 0xdf, 0xbf, 0x3d, 0x7f, 0x53, 0x97, 0xe5, 0xe9, 0x95, 0x17, 0x1d, 0x3d, 0x8b, 0xfb, 0xc7, 0xe3, 0x67, 0xa7,
0x07, 0xf1, 0x71, 0xa7, 0x53, 0xb5, 0x29, 0x89, 0xe5, 0x2b, 0xa7, 0x17, 0x29, 0xe9, 0x4f, 0xc5, 0x65, 0x6d, 0x6b, 0xef, 0x0d, 0x89, 0x49, 0x2f, 0xb3, 0x43,
0x53, 0x65, 0x1d, 0x49, 0xa3, 0x13, 0x89, 0x59, 0xef, 0x6b, 0xef, 0x65, 0x1d, 0x0b, 0x59, 0x13, 0xe3, 0x4f, 0x9d, 0xb3, 0x29, 0x43, 0x2b, 0x07, 0x1d, 0x95,
0x59, 0x59, 0x47, 0xfb, 0xe5, 0xe9, 0x61, 0x47, 0x2f, 0x35, 0x7f, 0x17, 0x7f, 0xef, 0x7f, 0x95, 0x95, 0x71, 0xd3, 0xa3, 0x0b, 0x71, 0xa3, 0xad, 0x0b, 0x3b,
0xb5, 0xfb, 0xa3, 0xbf, 0x4f, 0x83, 0x1d, 0xad, 0xe9, 0x2f, 0x71, 0x65, 0xa3, 0xe5, 0x07, 0x35, 0x3d, 0x0d, 0xb5, 0xe9, 0xe5, 0x47, 0x3b, 0x9d, 0xef, 0x35,
0xa3, 0xbf, 0xb3, 0xdf, 0x53, 0xd3, 0x97, 0x53, 0x49, 0x71, 0x07, 0x35, 0x61, 0x71, 0x2f, 0x43, 0x2f, 0x11, 0xdf, 0x17, 0x97, 0xfb, 0x95, 0x3b, 0x7f, 0x6b,
0xd3, 0x25, 0xbf, 0xad, 0xc7, 0xc5, 0xc5, 0xb5, 0x8b, 0xef, 0x2f, 0xd3, 0x07, 0x6b, 0x25, 0x49, 0x95, 0x25, 0x49, 0x6d, 0x71, 0xc7,
];
const WB_KEYMAP: [u8; 256] = [
0xa7, 0xbc, 0xc9, 0xad, 0x91, 0xdf, 0x85, 0xe5, 0xd4, 0x78, 0xd5, 0x17, 0x46, 0x7c, 0x29, 0x4c, 0x4d, 0x03, 0xe9, 0x25, 0x68, 0x11, 0x86, 0xb3, 0xbd, 0xf7,
0x6f, 0x61, 0x22, 0xa2, 0x26, 0x34, 0x2a, 0xbe, 0x1e, 0x46, 0x14, 0x68, 0x9d, 0x44, 0x18, 0xc2, 0x40, 0xf4, 0x7e, 0x5f, 0x1b, 0xad, 0x0b, 0x94, 0xb6, 0x67,
0xb4, 0x0b, 0xe1, 0xea, 0x95, 0x9c, 0x66, 0xdc, 0xe7, 0x5d, 0x6c, 0x05, 0xda, 0xd5, 0xdf, 0x7a, 0xef, 0xf6, 0xdb, 0x1f, 0x82, 0x4c, 0xc0, 0x68, 0x47, 0xa1,
0xbd, 0xee, 0x39, 0x50, 0x56, 0x4a, 0xdd, 0xdf, 0xa5, 0xf8, 0xc6, 0xda, 0xca, 0x90, 0xca, 0x01, 0x42, 0x9d, 0x8b, 0x0c, 0x73, 0x43, 0x75, 0x05, 0x94, 0xde,
0x24, 0xb3, 0x80, 0x34, 0xe5, 0x2c, 0xdc, 0x9b, 0x3f, 0xca, 0x33, 0x45, 0xd0, 0xdb, 0x5f, 0xf5, 0x52, 0xc3, 0x21, 0xda, 0xe2, 0x22, 0x72, 0x6b, 0x3e, 0xd0,
0x5b, 0xa8, 0x87, 0x8c, 0x06, 0x5d, 0x0f, 0xdd, 0x09, 0x19, 0x93, 0xd0, 0xb9, 0xfc, 0x8b, 0x0f, 0x84, 0x60, 0x33, 0x1c, 0x9b, 0x45, 0xf1, 0xf0, 0xa3, 0x94,
0x3a, 0x12, 0x77, 0x33, 0x4d, 0x44, 0x78, 0x28, 0x3c, 0x9e, 0xfd, 0x65, 0x57, 0x16, 0x94, 0x6b, 0xfb, 0x59, 0xd0, 0xc8, 0x22, 0x36, 0xdb, 0xd2, 0x63, 0x98,
0x43, 0xa1, 0x04, 0x87, 0x86, 0xf7, 0xa6, 0x26, 0xbb, 0xd6, 0x59, 0x4d, 0xbf, 0x6a, 0x2e, 0xaa, 0x2b, 0xef, 0xe6, 0x78, 0xb6, 0x4e, 0xe0, 0x2f, 0xdc, 0x7c,
0xbe, 0x57, 0x19, 0x32, 0x7e, 0x2a, 0xd0, 0xb8, 0xba, 0x29, 0x00, 0x3c, 0x52, 0x7d, 0xa8, 0x49, 0x3b, 0x2d, 0xeb, 0x25, 0x49, 0xfa, 0xa3, 0xaa, 0x39, 0xa7,
0xc5, 0xa7, 0x50, 0x11, 0x36, 0xfb, 0xc6, 0x67, 0x4a, 0xf5, 0xa5, 0x12, 0x65, 0x7e, 0xb0, 0xdf, 0xaf, 0x4e, 0xb3, 0x61, 0x7f, 0x2f,
];
/// NEF format encapsulation for analyzer
#[derive(Debug, Clone, PartialEq, Default, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct NefFormat {
tiff: GenericTiffReader,
}
#[derive(Debug, Clone)]
pub struct NefDecoder<'a> {
#[allow(unused)]
rawloader: &'a RawLoader,
tiff: GenericTiffReader,
makernote: IFD,
camera: Camera,
}
impl<'a> NefDecoder<'a> {
pub fn new(file: &RawSource, tiff: GenericTiffReader, rawloader: &'a RawLoader) -> Result<NefDecoder<'a>> {
let raw = tiff
.find_first_ifd_with_tag(TiffCommonTag::CFAPattern)
.or_else(|| tiff.find_ifd_with_new_subfile_type(0))
.ok_or_else(|| RawlerError::DecoderFailed(format!("Failed to find a suitable IFD in NEF decoder")))?;
let bps = fetch_tiff_tag!(raw, TiffCommonTag::BitsPerSample).force_usize(0);
// Make sure we always use a 12/14 bit mode to get correct white/blackpoints
let mode = format!("{}bit", bps);
let camera = rawloader.check_supported_with_mode(tiff.root_ifd(), &mode)?;
let makernote = if let Some(exif) = tiff.find_first_ifd_with_tag(ExifTag::MakerNotes) {
exif.parse_makernote(&mut file.reader(), OffsetMode::Absolute, &[])?
} else {
warn!("NEF makernote not found");
None
}
.ok_or("File has not makernotes")?;
//makernote.dump::<ExifTag>(0).iter().for_each(|line| eprintln!("DUMP: {}", line));
Ok(NefDecoder {
tiff,
rawloader,
makernote,
camera,
})
}
}
impl<'a> Decoder for NefDecoder<'a> {
fn raw_image(&self, file: &RawSource, _params: &RawDecodeParams, dummy: bool) -> Result<RawImage> {
let raw = self
.tiff
.find_first_ifd_with_tag(TiffCommonTag::CFAPattern)
.or_else(|| self.tiff.find_ifd_with_new_subfile_type(0))
.ok_or_else(|| RawlerError::DecoderFailed(format!("Failed to find a suitable IFD in NEF decoder")))?;
let mut width = fetch_tiff_tag!(raw, TiffCommonTag::ImageWidth).force_usize(0);
let height = fetch_tiff_tag!(raw, TiffCommonTag::ImageLength).force_usize(0);
let bps = fetch_tiff_tag!(raw, TiffCommonTag::BitsPerSample).force_usize(0);
let mut cpp = fetch_tiff_tag!(raw, TiffCommonTag::BitsPerSample).count(); // Linear files don't have SamplesPerPixel
let compression = fetch_tiff_tag!(raw, TiffCommonTag::Compression).force_usize(0);
let nef_compression = if let Some(z_makernote) = self.makernote.get_entry(NikonMakernote::Makernotes0x51) {
// For new Z models, a new tag 0x51 for makernotes appears. This contains
// The new-old NEFCompression tag. The old tag is unavailable in this models.
Some(NefCompression::try_from(crate::bits::LEu16(z_makernote.get_data(), 10)).map_err(RawlerError::from)?)
} else {
self
.makernote
.get_entry(NikonMakernote::NefCompression)
.map(|entry| entry.force_u16(0))
.map(NefCompression::try_from)
.transpose()
.map_err(RawlerError::from)?
};
debug!("TIFF compression flag: {}, NEF compression mode: {:?}", compression, nef_compression);
if matches!(nef_compression, Some(NefCompression::HighEfficency)) || matches!(nef_compression, Some(NefCompression::HighEfficencyStar)) {
return Err(RawlerError::DecoderFailed(format!("NEF compression {:?} is not supported", nef_compression)));
}
let offset = fetch_tiff_tag!(raw, TiffCommonTag::StripOffsets).force_usize(0);
let size = fetch_tiff_tag!(raw, TiffCommonTag::StripByteCounts).force_usize(0);
let rows_per_strip = fetch_tiff_tag!(raw, TiffCommonTag::RowsPerStrip).get_usize(0).ok().flatten().unwrap_or(height);
// That's little bit hacky here. Some files like D500 using multiple strips.
// Because the strips has no holes between and are perfectly aligned, we can process the whole
// chunk at once, instead of iterating over every strip.
// It would be safer to process each strip offset, but it is not need for any known model so far.
let src = if rows_per_strip == height {
file.subview_padded(offset as u64, size as u64)?
} else {
let full_size: u32 = match fetch_tiff_tag!(raw, TiffCommonTag::StripByteCounts) {
Value::Long(data) => data.iter().copied().sum(),
_ => {
return Err("StripByteCounts is not of type LONG".into());
}
};
file.subview_padded(offset as u64, full_size as u64)?
};
let coeffs = normalize_wb(self.get_wb()?);
debug!("WB coeff: {:?}", coeffs);
assert_eq!(self.tiff.little_endian(), self.makernote.endian == Endian::Little);
let image = if self.camera.model == "NIKON D100" {
width = 3040;
decode_12be_wcontrol(&src, width, height, dummy)
} else if self.camera.find_hint("coolpixsplit") {
decode_12be_interlaced_unaligned(&src, width, height, dummy)
} else if self.camera.find_hint("msb32") {
decode_12be_msb32(&src, width, height, dummy)
} else if self.camera.find_hint("unpacked") {
// P7800 and others is LE, but data is BE, so we use hints here
if (self.tiff.little_endian() || self.camera.find_hint("little_endian")) && !self.camera.find_hint("big_endian") {
decode_16le(&src, width, height, dummy)
} else {
decode_16be(&src, width, height, dummy)
}
} else if let Some(padding) = self.is_uncompressed(raw)? {
debug!("NEF uncompressed row padding: {}, little-endian: {}", padding, self.tiff.little_endian());
match bps {
16 => {
// Used by Coolscan scanners
if self.tiff.little_endian() {
decode_16le(&src, width * cpp, height, dummy)
} else {
decode_16be(&src, width * cpp, height, dummy)
}
}
14 => {
if (self.tiff.little_endian() || self.camera.find_hint("little_endian")) && !self.camera.find_hint("big_endian") {
// Models like D6 uses packed instead of unpacked 14le encoding. And D6 uses
// row padding.
if matches!(nef_compression, Some(NefCompression::Packed14Bits)) {
decode_14le_padded(&src, width, height, (width * bps / u8::BITS as usize) + padding, dummy)
} else {
decode_14le_unpacked(&src, width, height, dummy)
}
} else {
decode_14be_unpacked(&src, width, height, dummy)
}
}
12 => {
if (self.tiff.little_endian() || self.camera.find_hint("little_endian")) && !self.camera.find_hint("big_endian") {
decode_12le_padded(&src, width, height, (width * bps / u8::BITS as usize) + padding, dummy)
} else {
decode_12be(&src, width, height, dummy)
}
}
x => return Err(RawlerError::unsupported(&self.camera, format!("Don't know uncompressed bps {}", x))),
}
} else if size == width * height * 3 {
cpp = 3;
Self::decode_snef_compressed(&src, coeffs, width, height, dummy)
} else if compression == 34713 {
self.decode_compressed(&src, width, height, bps, dummy)?
} else {
return Err(RawlerError::unsupported(&self.camera, format!("NEF: Don't know compression {}", compression)));
};
assert_eq!(image.width, width * cpp);
let blacklevel = self.get_blacklevel(bps)?;
let whitelevel = None;
let photometric = match cpp {
1 => RawPhotometricInterpretation::Cfa(CFAConfig::new_from_camera(&self.camera)),
3 => RawPhotometricInterpretation::LinearRaw,
_ => todo!(),
};
let mut img = RawImage::new(self.camera.clone(), image, cpp, coeffs, photometric, blacklevel, whitelevel, dummy);
if let Some(crop) = self.get_crop()? {
debug!("RAW Crops: {:?}", crop);
img.crop_area = Some(crop);
}
if cpp == 3 {
// Reset levels to defaults (0)
img.blacklevel = BlackLevel::default();
img.whitelevel = WhiteLevel::new(vec![65535; cpp]);
}
Ok(img)
}
fn format_dump(&self) -> FormatDump {
FormatDump::Nef(NefFormat { tiff: self.tiff.clone() })
}
fn raw_metadata(&self, _file: &RawSource, _params: &RawDecodeParams) -> Result<RawMetadata> {
let exif = Exif::new(self.tiff.root_ifd())?;
Ok(match self.get_lens_description() {
Ok(lens_data) => RawMetadata::new_with_lens(&self.camera, exif, lens_data.cloned()),
Err(err) => {
log::warn!("Failed to read lens information: {:?}", err);
RawMetadata::new(&self.camera, exif)
}
})
}
fn full_image(&self, file: &RawSource, params: &RawDecodeParams) -> Result<Option<DynamicImage>> {
if params.image_index != 0 {
return Ok(None);
}
// High resolution preview image is stored in JPEGInterchangeFormat tag.
// Search for all IFDs and use the best match.
let mut ifds = self.tiff.find_ifds_with_filter(|ifd| {
if ifd.get_new_sub_file_type() == Some(1) {
ifd.get_entry(ExifTag::JPEGInterchangeFormatLength).is_some()
} else {
false
}
});
ifds.sort_by(|a, b| {
a.get_entry(ExifTag::JPEGInterchangeFormatLength)
.map(|x| x.force_u32(0))
.cmp(&b.get_entry(ExifTag::JPEGInterchangeFormatLength).map(|x| x.force_u32(0)))
});
// Take the IFD with the largest JPEG stream size
if let Some(jpeg_ifd) = ifds.last() {
return Ok(Some(dynamic_image_from_jpeg_interchange_format(jpeg_ifd, file)?));
} else {
// No matching IFDs found, use root IFD (possibly bad resolution)
Ok(Some(dynamic_image_from_ifd(self.tiff.root_ifd(), file)?))
}
}
fn format_hint(&self) -> FormatHint {
FormatHint::NEF
}
}
impl<'a> NefDecoder<'a> {
/// For older formats, we use the camera definitions and this here
/// is useless. But if we found here the levels in makernotes, we
/// use these instead. For 12 bit images, the blacklevels are still relative to
/// 14 bit image data. So we need to reduce them by 2 bits.
fn get_blacklevel(&self, bps: usize) -> Result<Option<BlackLevel>> {
if let Some(levels) = self.makernote.get_entry(NikonMakernote::BlackLevel) {
let mut black = [levels.force_u16(0), levels.force_u16(1), levels.force_u16(2), levels.force_u16(3)];
if bps == 12 {
black.iter_mut().for_each(|v| *v >>= 14 - 12);
}
Ok(Some(BlackLevel::new(&black, self.camera.cfa.width, self.camera.cfa.height, 1)))
} else {
Ok(None)
}
}
fn get_crop(&self) -> Result<Option<Rect>> {
if let Some(crop) = self.makernote.get_entry(NikonMakernote::CropArea) {
let values = [crop.force_u16(0), crop.force_u16(1), crop.force_u16(2), crop.force_u16(3)];
let rect = Rect::new(
Point::new(values[0] as usize, values[1] as usize),
Dim2::new(values[2] as usize, values[3] as usize),
);
Ok(Some(rect))
} else {
Ok(None)
}
}
/// Get lens description by analyzing TIFF tags and makernotes
fn get_lens_description(&self) -> Result<Option<&'static LensDescription>> {
if let Some(lensdata) = lensdata::from_makernote(&self.makernote)? {
if let Some(lenstype) = self.makernote.get_entry(NikonMakernote::LensType) {
match lensdata {
NefLensData::FMount(oldv) => {
let composite_id = oldv.composite_id(lenstype.force_u8(0));
log::debug!("NEF lens composite ID: {}", composite_id);
let resolver = LensResolver::new()
.with_nikon_id(Some(composite_id))
.with_camera(&self.camera)
.with_mounts(&[NIKON_F_MOUNT.into()]);
return Ok(resolver.resolve());
}
NefLensData::ZMount(newv) => {
let resolver = LensResolver::new()
.with_lens_id((newv.lens_id as u32, 0))
.with_camera(&self.camera)
.with_mounts(&[NIKON_Z_MOUNT.into()]);
return Ok(resolver.resolve());
}
}
}
}
Ok(None)
}
fn get_wb(&self) -> Result<[f32; 4]> {
if self.camera.find_hint("nowb") {
Ok([f32::NAN, f32::NAN, f32::NAN, f32::NAN])
} else if let Some(levels) = self.makernote.get_entry(TiffCommonTag::NefWB0) {
Ok([levels.force_f32(0), 1.0, 1.0, levels.force_f32(1)])
} else if let Some(levels) = self.makernote.get_entry(TiffCommonTag::NrwWB) {
let data = levels.get_data();
if data[0..3] == b"NRW"[..] {
let offset = if data[4..8] == b"0100"[..] { 1556 } else { 56 };
Ok([
(LEu32(data, offset) << 2) as f32,
(LEu32(data, offset + 4) + LEu32(data, offset + 8)) as f32,
(LEu32(data, offset + 4) + LEu32(data, offset + 8)) as f32,
(LEu32(data, offset + 12) << 2) as f32,
])
} else {
Ok([BEu16(data, 1248) as f32, 256.0, 256.0, BEu16(data, 1250) as f32])
}
} else if let Some(levels) = self.makernote.get_entry(TiffCommonTag::NefWB1) {
let mut version: u32 = 0;
for i in 0..4 {
version = (version << 4) + (levels.get_data()[i] - b'0') as u32;
}
let buf = levels.get_data();
debug!("NEF Color balance version: 0x{:x}", version);
match version {
0x100 => Ok([
BEu16(buf, 36 * 2) as f32,
BEu16(buf, 38 * 2) as f32,
BEu16(buf, 38 * 2) as f32,
BEu16(buf, 37 * 2) as f32,
]),
// Nikon D2H
0x102 => Ok([
BEu16(buf, 5 * 2) as f32,
BEu16(buf, 6 * 2) as f32,
BEu16(buf, 6 * 2) as f32,
BEu16(buf, 8 * 2) as f32,
]),
// Nikon D70
0x103 => Ok([
BEu16(buf, 10 * 2) as f32,
BEu16(buf, 11 * 2) as f32,
BEu16(buf, 11 * 2) as f32,
BEu16(buf, 12 * 2) as f32,
]),
0x204 | 0x205 => {
let serial = fetch_tiff_tag!(self.makernote, TiffCommonTag::NefSerial);
let data = serial.get_data();
let mut serialno = 0_usize;
for i in 0..serial.count() as usize {
if data[i] == 0 {
break;
}
serialno = serialno * 10
+ if data[i] >= 48 && data[i] <= 57 {
// "0" to "9"
(data[i] - 48) as usize
} else {
(data[i] % 10) as usize
};
}
// Get the "decryption" key
let keydata = fetch_tiff_tag!(self.makernote, TiffCommonTag::NefKey).force_u32(0).to_le_bytes();
let keyno = (keydata[0] ^ keydata[1] ^ keydata[2] ^ keydata[3]) as usize;
let src = if version == 0x204 {
&levels.get_data()[284..]
} else {
&levels.get_data()[4..]
};
let ci = WB_SERIALMAP[serialno & 0xff] as u32;
let mut cj = WB_KEYMAP[keyno & 0xff] as u32;
let mut ck = 0x60_u32;
let mut buf = [0_u8; 280];
for i in 0..280 {
cj += ci * ck;
ck += 1;
buf[i] = src[i] ^ (cj as u8);
}
let off = if version == 0x204 { 6 } else { 14 };
Ok([
BEu16(&buf, off) as f32,
BEu16(&buf, off + 2) as f32,
BEu16(&buf, off + 4) as f32,
BEu16(&buf, off + 6) as f32,
])
}
x => Err(RawlerError::unsupported(&self.camera, format!("NEF: Don't know about WB version 0x{:x}", x))),
}
} else {
log::debug!("NEF: Don't know how to fetch WB, fallback to [1.0, 1.0, 1.0]");
Ok([1.0, 1.0, 1.0, 1.0])
}
}
fn create_hufftable(num: usize) -> Result<HuffTable> {
let mut htable = HuffTable::empty();
for i in 0..15 {
htable.bits[i] = NIKON_TREE[num][0][i] as u32;
htable.huffval[i] = NIKON_TREE[num][1][i] as u32;
htable.shiftval[i] = NIKON_TREE[num][2][i] as u32;
}
htable.initialize()?;
Ok(htable)
}
/// The compression flags in some raws are not reliable because of firmware bugs.
/// We try to figure out the compression by some heuristics.
/// The return value is None if the file is not uncompressed or Some(x)
/// where x is the extra amount of bytes after each row.
fn is_uncompressed(&self, raw: &IFD) -> Result<Option<usize>> {
let width = fetch_tiff_tag!(raw, TiffCommonTag::ImageWidth).force_usize(0);
let height = fetch_tiff_tag!(raw, TiffCommonTag::ImageLength).force_usize(0);
let bps = fetch_tiff_tag!(raw, TiffCommonTag::BitsPerSample).force_usize(0);
let compression = fetch_tiff_tag!(raw, TiffCommonTag::Compression).force_usize(0);
let size = fetch_tiff_tag!(raw, TiffCommonTag::StripByteCounts).force_usize(0);
fn div_round_up(a: usize, b: usize) -> usize {
a.div_ceil(b) // (a + b - 1) / b
}
let req_pixels = width * height;
let req_input_bits = bps * req_pixels;
let req_input_bytes = div_round_up(req_input_bits, 8);
Ok(if compression == 1 || size == width * height * bps / 8 {
Some(0)
} else if size >= req_input_bytes {
// Some models (D6) using row padding, so the row width is slightly larger.
// This should be no more than 16 extra bytes.
let total_padding = size - req_input_bytes;
let per_row_padding = total_padding / height;
if total_padding % height != 0 {
None
} else if per_row_padding < 16 {
Some(per_row_padding)
} else {
None
}
} else {
None
})
}
fn decode_compressed(&self, src: &PaddedBuf, width: usize, height: usize, bps: usize, dummy: bool) -> Result<PixU16> {
let meta = if let Some(meta) = self.makernote.get_entry(TiffCommonTag::NefMeta2) {
debug!("Found NefMeta2");
meta
} else {
debug!("Fallback NefMeta1");
fetch_tiff_tag!(self.makernote, TiffCommonTag::NefMeta1)
};
Self::do_decode(src, meta.get_data(), self.makernote.endian, width, height, bps, dummy)
}
pub(crate) fn do_decode(src: &[u8], meta: &[u8], endian: Endian, width: usize, height: usize, bps: usize, dummy: bool) -> Result<PixU16> {
debug!("NEF decode with: endian: {:?}, width: {}, height: {}, bps: {}", endian, width, height, bps);
let mut out = alloc_image_ok!(width, height, dummy);
let mut stream = ByteStream::new(meta, endian);
let v0 = stream.get_u8();
let v1 = stream.get_u8();
debug!("Nef version v0:{}, v1:{}", v0, v1);
let mut huff_select = 0;
if v0 == 73 || v1 == 88 {
assert!(stream.remaining_bytes() >= 2110);
stream.consume_bytes(2110);
}
if v0 == 70 {
huff_select = 2;
}
if bps == 14 {
huff_select += 3;
}
// Create the huffman table used to decode
let mut htable = Self::create_hufftable(huff_select)?;
// Setup the predictors
let mut pred_up1: [i32; 2] = [stream.get_u16() as i32, stream.get_u16() as i32];
let mut pred_up2: [i32; 2] = [stream.get_u16() as i32, stream.get_u16() as i32];
// Get the linearization curve
let mut points = [0_u16; 1 << 16];
for i in 0..points.len() {
points[i] = i as u16;
}
// Some models reports 14 bits, but the data is 12 bits.
// So we reduce the bps to calculate the max value which
// is needed in the next steps.
let real_bps = if v0 == 68 && v1 == 64 {
bps as u32 - 2 // Special for D780, Z7 and others
} else {
bps as u32
};
let mut max = 1 << real_bps;
let csize = stream.get_u16() as usize;
let mut split = 0_usize;
let step = if csize > 1 { max / (csize - 1) } else { 0 };
if v0 == 68 && (v1 == 32 || v1 == 64) && step > 0 {
for i in 0..csize {
points[i * step] = stream.get_u16();
}
for i in 0..max {
let b_scale = i % step;
let a_pos = i - b_scale;
let b_pos = a_pos + step;
//assert!(a_pos < max);
//assert!(b_pos > 0);
//assert!(b_pos < max);
//assert!(a_pos < b_pos);
let a_scale = step - b_scale;
points[i] = ((a_scale * points[a_pos] as usize + b_scale * points[b_pos] as usize) / step) as u16;
}
split = endian.read_u16(meta, 562) as usize;
} else if v0 != 70 && csize <= 0x4001 {
for i in 0..csize {
points[i] = stream.get_u16();
}
max = csize;
}
let curve = LookupTable::new(&points[0..max]);
let mut pump = BitPumpMSB::new(src);
let mut random = pump.peek_bits(24);
for row in 0..height {
if split > 0 && row == split {
htable = Self::create_hufftable(huff_select + 1)?;
}
pred_up1[row & 1] += htable.huff_decode(&mut pump)?;
pred_up2[row & 1] += htable.huff_decode(&mut pump)?;
let mut pred_left1 = pred_up1[row & 1];
let mut pred_left2 = pred_up2[row & 1];
for col in (0..width).step_by(2) {
if col > 0 {
pred_left1 += htable.huff_decode(&mut pump)?;
pred_left2 += htable.huff_decode(&mut pump)?;
}
out[row * width + col + 0] = curve.dither(clampbits(pred_left1, real_bps), &mut random);
out[row * width + col + 1] = curve.dither(clampbits(pred_left2, real_bps), &mut random);
}
}
Ok(out)
}
// Decodes 12 bit data in an YUY2-like pattern (2 Luma, 1 Chroma per 2 pixels).
// We un-apply the whitebalance, so output matches lossless.
pub(crate) fn decode_snef_compressed(src: &PaddedBuf, coeffs: [f32; 4], width: usize, height: usize, dummy: bool) -> PixU16 {
let inv_wb_r = (1024.0 / coeffs[0]) as i32;
let inv_wb_b = (1024.0 / coeffs[2]) as i32;
//println!("Got invwb {} {}", inv_wb_r, inv_wb_b);
let snef_curve = {
let g: f32 = 2.4;
let f: f32 = 0.055;
let min: f32 = 0.04045;
let mul: f32 = 12.92;
let curve = (0..4096)
.map(|i| {
let v = (i as f32) / 4095.0;
let res = if v <= min { v / mul } else { ((v + f) / (1.0 + f)).powf(g) };
clampbits((res * 65535.0 * 4.0) as i32, 16)
})
.collect::<Vec<u16>>();
LookupTable::new(&curve)
};
decode_threaded(
width * 3,
height,
dummy,
&(|out: &mut [u16], row| {
let inb = &src[row * width * 3..];
let mut random = BEu32(inb, 0);
for (o, i) in out.chunks_exact_mut(6).zip(inb.chunks_exact(6)) {
let g1: u16 = i[0] as u16;
let g2: u16 = i[1] as u16;
let g3: u16 = i[2] as u16;
let g4: u16 = i[3] as u16;
let g5: u16 = i[4] as u16;
let g6: u16 = i[5] as u16;
let y1 = (g1 | ((g2 & 0x0f) << 8)) as f32;
let y2 = ((g2 >> 4) | (g3 << 4)) as f32;
let cb = (g4 | ((g5 & 0x0f) << 8)) as f32 - 2048.0;
let cr = ((g5 >> 4) | (g6 << 4)) as f32 - 2048.0;
let r = snef_curve.dither(clampbits((y1 + 1.370705 * cr) as i32, 12), &mut random);
let g = snef_curve.dither(clampbits((y1 - 0.337633 * cb - 0.698001 * cr) as i32, 12), &mut random);
let b = snef_curve.dither(clampbits((y1 + 1.732446 * cb) as i32, 12), &mut random);
// invert the white balance
o[0] = clampbits((inv_wb_r * r as i32 + (1 << 9)) >> 10, 15);
o[1] = g;
o[2] = clampbits((inv_wb_b * b as i32 + (1 << 9)) >> 10, 15);
let r = snef_curve.dither(clampbits((y2 + 1.370705 * cr) as i32, 12), &mut random);
let g = snef_curve.dither(clampbits((y2 - 0.337633 * cb - 0.698001 * cr) as i32, 12), &mut random);
let b = snef_curve.dither(clampbits((y2 + 1.732446 * cb) as i32, 12), &mut random);
// invert the white balance
o[3] = clampbits((inv_wb_r * r as i32 + (1 << 9)) >> 10, 15);
o[4] = g;
o[5] = clampbits((inv_wb_b * b as i32 + (1 << 9)) >> 10, 15);
}
}),
)
}
}
fn normalize_wb(raw_wb: [f32; 4]) -> [f32; 4] {
debug!("NEF raw wb: {:?}", raw_wb);
// We never have more then RGB colors so far (no RGBE etc.)
// So we combine G1 and G2 to get RGB wb.
let div = raw_wb[1];
let mut norm = raw_wb;
norm.iter_mut().for_each(|v| {
if v.is_normal() {
*v /= div
}
});
[norm[0], (norm[1] + norm[2]) / 2.0, norm[3], f32::NAN]
}
crate::tags::tiff_tag_enum!(NikonMakernote);
#[allow(non_camel_case_types)]
#[derive(Debug, Copy, Clone, PartialEq, enumn::N)]
#[repr(u16)]
pub enum NikonMakernote {
MakernoteVersion = 0x0001,
NefWB0 = 0x000C,
PreviewIFD = 0x0011,
NrwWB = 0x0014,
NefSerial = 0x001d,
ImageSizeRaw = 0x003e,
CropArea = 0x0045,
BlackLevel = 0x003d,
Makernotes0x51 = 0x0051,
LensType = 0x0083,
NefMeta1 = 0x008c,
NefMeta2 = 0x0096,
ShotInfo = 0x0091,
NefCompression = 0x0093,
NefWB1 = 0x0097,
LensData = 0x0098,
NefKey = 0x00a7,
}
/// Known NEF compression formats
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
#[allow(non_camel_case_types)]
enum NefCompression {
LossyType1 = 1,
Uncompressed = 2,
Lossless = 3,
LossyType2 = 4,
StripedPacked12Bits = 5,
UncompressedReduced12Bits = 6,
Unpacked12Bits = 7,
Small = 8,
Packed12Bits = 9,
Packed14Bits = 10,
HighEfficency = 13,
HighEfficencyStar = 14,
}
impl TryFrom<u16> for NefCompression {
type Error = String;
fn try_from(v: u16) -> std::result::Result<Self, Self::Error> {
Ok(match v {
1 => Self::LossyType1,
2 => Self::Uncompressed,
3 => Self::Lossless,
4 => Self::LossyType2,
5 => Self::StripedPacked12Bits,
6 => Self::UncompressedReduced12Bits,
7 => Self::Unpacked12Bits,
8 => Self::Small,
9 => Self::Packed12Bits,
10 => Self::Packed14Bits,
13 => Self::HighEfficency,
14 => Self::HighEfficencyStar,
_ => return Err(format!("unknown nef compression: {}", v)),
})
}
}