From 2d6d92e81d167d3fbdcb8ddd6ac284567a75b025 Mon Sep 17 00:00:00 2001
From: Lilith River <lilith@imazen.io>
Date: Tue, 10 Mar 2026 14:43:07 -0600
Subject: [PATCH] refactor: simplify hash computation and remove unused
 benchmark

Address PR review feedback:

- Remove benches/decode.rs which referenced non-existent gen_bench_tiff.c
- Simplify compute_tiff_hash: replace 66-line match block with
  as_buffer().as_bytes() + ByteOrder::convert for LE normalization
- Use TIFF Type repr(u16) as hash discriminant instead of ad-hoc u8
- Rename all 74 seq test images to match updated hashes
---
 Cargo.toml                                    |   3 -
 benches/decode.rs                             |  40 --------
 tests/decode_images.rs                        |  91 +++++-------------
 ...ebb39b8d.tiff => seq-1c-10b-6d739fa2.tiff} | Bin
 ...tiff => seq-1c-10b-hpredict-6d739fa2.tiff} | Bin
 ...ff => seq-1c-10b-miniswhite-6d739fa2.tiff} | Bin
 ...349c9c76.tiff => seq-1c-12b-47c39b31.tiff} | Bin
 ...tiff => seq-1c-12b-hpredict-47c39b31.tiff} | Bin
 ...ff => seq-1c-12b-miniswhite-47c39b31.tiff} | Bin
 ...7e799edf.tiff => seq-1c-14b-e883657f.tiff} | Bin
 ...tiff => seq-1c-14b-hpredict-e883657f.tiff} | Bin
 ...ff => seq-1c-14b-miniswhite-e883657f.tiff} | Bin
 ...iff => seq-1c-16b-bigendian-68f373a0.tiff} | Bin
 ....tiff => seq-1c-16b-deflate-68f373a0.tiff} | Bin
 ...8a4a.tiff => seq-1c-16b-lzw-68f373a0.tiff} | Bin
 ...ff => seq-1c-16b-multistrip-68f373a0.tiff} | Bin
 ...4a.tiff => seq-1c-16b-tiled-68f373a0.tiff} | Bin
 ...-f2966d13.tiff => seq-1c-1b-71f6a21a.tiff} | Bin
 ...iff => seq-1c-1b-miniswhite-71f6a21a.tiff} | Bin
 ...8e6d7cb5.tiff => seq-1c-24b-072a9dc9.tiff} | Bin
 ...tiff => seq-1c-24b-hpredict-072a9dc9.tiff} | Bin
 ...ff => seq-1c-24b-miniswhite-072a9dc9.tiff} | Bin
 ...-eb3e4e3a.tiff => seq-1c-2b-58b25f76.tiff} | Bin
 ...a6d061ac.tiff => seq-1c-32f-390fe673.tiff} | Bin
 ...seq-1c-32f-deflate-fpredict-390fe673.tiff} | Bin
 ...-b64646a5.tiff => seq-1c-3b-ef237c07.tiff} | Bin
 ...iff => seq-1c-3b-miniswhite-ef237c07.tiff} | Bin
 ...-b3c1805b.tiff => seq-1c-4b-fb92dcae.tiff} | Bin
 ...iff => seq-1c-4b-miniswhite-fb92dcae.tiff} | Bin
 ...6.tiff => seq-1c-4b-palette-85108c5a.tiff} | Bin
 ...-59011bc5.tiff => seq-1c-5b-73098d17.tiff} | Bin
 ...iff => seq-1c-5b-miniswhite-73098d17.tiff} | Bin
 ...8a733620.tiff => seq-1c-64f-afa8560e.tiff} | Bin
 ...seq-1c-64f-deflate-fpredict-afa8560e.tiff} | Bin
 ...iff => seq-1c-6b-miniswhite-79cafbb6.tiff} | Bin
 ...-bd122024.tiff => seq-1c-7b-9c61ba70.tiff} | Bin
 ...iff => seq-1c-7b-miniswhite-9c61ba70.tiff} | Bin
 ...tiff => seq-1c-8b-bigendian-20f3db0c.tiff} | Bin
 ...1.tiff => seq-1c-8b-bigtiff-20f3db0c.tiff} | Bin
 ...1.tiff => seq-1c-8b-deflate-20f3db0c.tiff} | Bin
 ...98311.tiff => seq-1c-8b-lzw-20f3db0c.tiff} | Bin
 ...f => seq-1c-8b-lzw-hpredict-20f3db0c.tiff} | Bin
 ...tiff => seq-1c-8b-multipage-adeefdcc.tiff} | Bin
 ...iff => seq-1c-8b-multistrip-20f3db0c.tiff} | Bin
 ....tiff => seq-1c-8b-packbits-20f3db0c.tiff} | Bin
 ...d.tiff => seq-1c-8b-palette-89b39bc3.tiff} | Bin
 ...311.tiff => seq-1c-8b-tiled-20f3db0c.tiff} | Bin
 ... => seq-1c-8b-tiled-bigtiff-20f3db0c.tiff} | Bin
 ... => seq-1c-8b-tiled-deflate-20f3db0c.tiff} | Bin
 ...tiff => seq-1c-8b-tiled-lzw-20f3db0c.tiff} | Bin
 ...e55284f8.tiff => seq-1c-i16-63af2488.tiff} | Bin
 ...5fc9795b.tiff => seq-1c-i32-99fddec2.tiff} | Bin
 ...-dbcc75e5.tiff => seq-1c-i8-f8446bbe.tiff} | Bin
 ...0.tiff => seq-3c-10b-contig-d08d5dc0.tiff} | Bin
 ...a.tiff => seq-3c-10b-planar-c82e8ab6.tiff} | Bin
 ...a.tiff => seq-3c-12b-contig-e6f40b4a.tiff} | Bin
 ...1.tiff => seq-3c-12b-planar-e29e8e25.tiff} | Bin
 ...3.tiff => seq-3c-14b-contig-f4dcc6cc.tiff} | Bin
 ...8.tiff => seq-3c-14b-planar-4dde706b.tiff} | Bin
 ....tiff => seq-3c-16b-bigtiff-1b40ca6e.tiff} | Bin
 ...9.tiff => seq-3c-24b-contig-27b9f8ce.tiff} | Bin
 ...d.tiff => seq-3c-24b-planar-6296c0c9.tiff} | Bin
 ...c90c9901.tiff => seq-3c-32f-9a471c2b.tiff} | Bin
 ...7d.tiff => seq-3c-5b-contig-09f197f4.tiff} | Bin
 ...16f2fa89.tiff => seq-3c-64f-9fff098a.tiff} | Bin
 ...e4.tiff => seq-3c-7b-contig-2e4f43c5.tiff} | Bin
 ...tiff => seq-3c-8b-bigendian-8743c999.tiff} | Bin
 ...7068d.tiff => seq-3c-8b-lzw-8743c999.tiff} | Bin
 ...iff => seq-3c-8b-multistrip-8743c999.tiff} | Bin
 ...68d.tiff => seq-3c-8b-tiled-8743c999.tiff} | Bin
 ...8b69ff38.tiff => seq-3c-i16-f7fcf423.tiff} | Bin
 ...-a5e96bf3.tiff => seq-3c-i8-d7550ce4.tiff} | Bin
 ...d1b.tiff => seq-4c-16b-cmyk-c6e52592.tiff} | Bin
 ...810.tiff => seq-4c-16b-rgba-5181991f.tiff} | Bin
 ...06d2.tiff => seq-4c-8b-cmyk-352ac1da.tiff} | Bin
 ...c08a.tiff => seq-4c-8b-rgba-50969cda.tiff} | Bin
 ...f => seq-4c-8b-rgba-unassoc-50969cda.tiff} | Bin
 77 files changed, 23 insertions(+), 111 deletions(-)
 delete mode 100644 benches/decode.rs
 rename tests/images/seq/{seq-1c-10b-ebb39b8d.tiff => seq-1c-10b-6d739fa2.tiff} (100%)
 rename tests/images/seq/{seq-1c-10b-hpredict-ebb39b8d.tiff => seq-1c-10b-hpredict-6d739fa2.tiff} (100%)
 rename tests/images/seq/{seq-1c-10b-miniswhite-ebb39b8d.tiff => seq-1c-10b-miniswhite-6d739fa2.tiff} (100%)
 rename tests/images/seq/{seq-1c-12b-349c9c76.tiff => seq-1c-12b-47c39b31.tiff} (100%)
 rename tests/images/seq/{seq-1c-12b-hpredict-349c9c76.tiff => seq-1c-12b-hpredict-47c39b31.tiff} (100%)
 rename tests/images/seq/{seq-1c-12b-miniswhite-349c9c76.tiff => seq-1c-12b-miniswhite-47c39b31.tiff} (100%)
 rename tests/images/seq/{seq-1c-14b-7e799edf.tiff => seq-1c-14b-e883657f.tiff} (100%)
 rename tests/images/seq/{seq-1c-14b-hpredict-7e799edf.tiff => seq-1c-14b-hpredict-e883657f.tiff} (100%)
 rename tests/images/seq/{seq-1c-14b-miniswhite-7e799edf.tiff => seq-1c-14b-miniswhite-e883657f.tiff} (100%)
 rename tests/images/seq/{seq-1c-16b-bigendian-6b088a4a.tiff => seq-1c-16b-bigendian-68f373a0.tiff} (100%)
 rename tests/images/seq/{seq-1c-16b-deflate-6b088a4a.tiff => seq-1c-16b-deflate-68f373a0.tiff} (100%)
 rename tests/images/seq/{seq-1c-16b-lzw-6b088a4a.tiff => seq-1c-16b-lzw-68f373a0.tiff} (100%)
 rename tests/images/seq/{seq-1c-16b-multistrip-6b088a4a.tiff => seq-1c-16b-multistrip-68f373a0.tiff} (100%)
 rename tests/images/seq/{seq-1c-16b-tiled-6b088a4a.tiff => seq-1c-16b-tiled-68f373a0.tiff} (100%)
 rename tests/images/seq/{seq-1c-1b-f2966d13.tiff => seq-1c-1b-71f6a21a.tiff} (100%)
 rename tests/images/seq/{seq-1c-1b-miniswhite-f2966d13.tiff => seq-1c-1b-miniswhite-71f6a21a.tiff} (100%)
 rename tests/images/seq/{seq-1c-24b-8e6d7cb5.tiff => seq-1c-24b-072a9dc9.tiff} (100%)
 rename tests/images/seq/{seq-1c-24b-hpredict-8e6d7cb5.tiff => seq-1c-24b-hpredict-072a9dc9.tiff} (100%)
 rename tests/images/seq/{seq-1c-24b-miniswhite-8e6d7cb5.tiff => seq-1c-24b-miniswhite-072a9dc9.tiff} (100%)
 rename tests/images/seq/{seq-1c-2b-eb3e4e3a.tiff => seq-1c-2b-58b25f76.tiff} (100%)
 rename tests/images/seq/{seq-1c-32f-a6d061ac.tiff => seq-1c-32f-390fe673.tiff} (100%)
 rename tests/images/seq/{seq-1c-32f-deflate-fpredict-a6d061ac.tiff => seq-1c-32f-deflate-fpredict-390fe673.tiff} (100%)
 rename tests/images/seq/{seq-1c-3b-b64646a5.tiff => seq-1c-3b-ef237c07.tiff} (100%)
 rename tests/images/seq/{seq-1c-3b-miniswhite-b64646a5.tiff => seq-1c-3b-miniswhite-ef237c07.tiff} (100%)
 rename tests/images/seq/{seq-1c-4b-b3c1805b.tiff => seq-1c-4b-fb92dcae.tiff} (100%)
 rename tests/images/seq/{seq-1c-4b-miniswhite-b3c1805b.tiff => seq-1c-4b-miniswhite-fb92dcae.tiff} (100%)
 rename tests/images/seq/{seq-1c-4b-palette-80edc956.tiff => seq-1c-4b-palette-85108c5a.tiff} (100%)
 rename tests/images/seq/{seq-1c-5b-59011bc5.tiff => seq-1c-5b-73098d17.tiff} (100%)
 rename tests/images/seq/{seq-1c-5b-miniswhite-59011bc5.tiff => seq-1c-5b-miniswhite-73098d17.tiff} (100%)
 rename tests/images/seq/{seq-1c-64f-8a733620.tiff => seq-1c-64f-afa8560e.tiff} (100%)
 rename tests/images/seq/{seq-1c-64f-deflate-fpredict-8a733620.tiff => seq-1c-64f-deflate-fpredict-afa8560e.tiff} (100%)
 rename tests/images/seq/{seq-1c-6b-miniswhite-7142de37.tiff => seq-1c-6b-miniswhite-79cafbb6.tiff} (100%)
 rename tests/images/seq/{seq-1c-7b-bd122024.tiff => seq-1c-7b-9c61ba70.tiff} (100%)
 rename tests/images/seq/{seq-1c-7b-miniswhite-bd122024.tiff => seq-1c-7b-miniswhite-9c61ba70.tiff} (100%)
 rename tests/images/seq/{seq-1c-8b-bigendian-86098311.tiff => seq-1c-8b-bigendian-20f3db0c.tiff} (100%)
 rename tests/images/seq/{seq-1c-8b-bigtiff-86098311.tiff => seq-1c-8b-bigtiff-20f3db0c.tiff} (100%)
 rename tests/images/seq/{seq-1c-8b-deflate-86098311.tiff => seq-1c-8b-deflate-20f3db0c.tiff} (100%)
 rename tests/images/seq/{seq-1c-8b-lzw-86098311.tiff => seq-1c-8b-lzw-20f3db0c.tiff} (100%)
 rename tests/images/seq/{seq-1c-8b-lzw-hpredict-86098311.tiff => seq-1c-8b-lzw-hpredict-20f3db0c.tiff} (100%)
 rename tests/images/seq/{seq-1c-8b-multipage-0c8d8775.tiff => seq-1c-8b-multipage-adeefdcc.tiff} (100%)
 rename tests/images/seq/{seq-1c-8b-multistrip-86098311.tiff => seq-1c-8b-multistrip-20f3db0c.tiff} (100%)
 rename tests/images/seq/{seq-1c-8b-packbits-86098311.tiff => seq-1c-8b-packbits-20f3db0c.tiff} (100%)
 rename tests/images/seq/{seq-1c-8b-palette-7ae71ffd.tiff => seq-1c-8b-palette-89b39bc3.tiff} (100%)
 rename tests/images/seq/{seq-1c-8b-tiled-86098311.tiff => seq-1c-8b-tiled-20f3db0c.tiff} (100%)
 rename tests/images/seq/{seq-1c-8b-tiled-bigtiff-86098311.tiff => seq-1c-8b-tiled-bigtiff-20f3db0c.tiff} (100%)
 rename tests/images/seq/{seq-1c-8b-tiled-deflate-86098311.tiff => seq-1c-8b-tiled-deflate-20f3db0c.tiff} (100%)
 rename tests/images/seq/{seq-1c-8b-tiled-lzw-86098311.tiff => seq-1c-8b-tiled-lzw-20f3db0c.tiff} (100%)
 rename tests/images/seq/{seq-1c-i16-e55284f8.tiff => seq-1c-i16-63af2488.tiff} (100%)
 rename tests/images/seq/{seq-1c-i32-5fc9795b.tiff => seq-1c-i32-99fddec2.tiff} (100%)
 rename tests/images/seq/{seq-1c-i8-dbcc75e5.tiff => seq-1c-i8-f8446bbe.tiff} (100%)
 rename tests/images/seq/{seq-3c-10b-contig-20e8c150.tiff => seq-3c-10b-contig-d08d5dc0.tiff} (100%)
 rename tests/images/seq/{seq-3c-10b-planar-bc13e4aa.tiff => seq-3c-10b-planar-c82e8ab6.tiff} (100%)
 rename tests/images/seq/{seq-3c-12b-contig-5af4bdfa.tiff => seq-3c-12b-contig-e6f40b4a.tiff} (100%)
 rename tests/images/seq/{seq-3c-12b-planar-633ce351.tiff => seq-3c-12b-planar-e29e8e25.tiff} (100%)
 rename tests/images/seq/{seq-3c-14b-contig-c5d06ba3.tiff => seq-3c-14b-contig-f4dcc6cc.tiff} (100%)
 rename tests/images/seq/{seq-3c-14b-planar-29d9e1f8.tiff => seq-3c-14b-planar-4dde706b.tiff} (100%)
 rename tests/images/seq/{seq-3c-16b-bigtiff-8ccce3e0.tiff => seq-3c-16b-bigtiff-1b40ca6e.tiff} (100%)
 rename tests/images/seq/{seq-3c-24b-contig-e610e399.tiff => seq-3c-24b-contig-27b9f8ce.tiff} (100%)
 rename tests/images/seq/{seq-3c-24b-planar-82e9baed.tiff => seq-3c-24b-planar-6296c0c9.tiff} (100%)
 rename tests/images/seq/{seq-3c-32f-c90c9901.tiff => seq-3c-32f-9a471c2b.tiff} (100%)
 rename tests/images/seq/{seq-3c-5b-contig-4c1b3a7d.tiff => seq-3c-5b-contig-09f197f4.tiff} (100%)
 rename tests/images/seq/{seq-3c-64f-16f2fa89.tiff => seq-3c-64f-9fff098a.tiff} (100%)
 rename tests/images/seq/{seq-3c-7b-contig-1fa56ce4.tiff => seq-3c-7b-contig-2e4f43c5.tiff} (100%)
 rename tests/images/seq/{seq-3c-8b-bigendian-a837068d.tiff => seq-3c-8b-bigendian-8743c999.tiff} (100%)
 rename tests/images/seq/{seq-3c-8b-lzw-a837068d.tiff => seq-3c-8b-lzw-8743c999.tiff} (100%)
 rename tests/images/seq/{seq-3c-8b-multistrip-a837068d.tiff => seq-3c-8b-multistrip-8743c999.tiff} (100%)
 rename tests/images/seq/{seq-3c-8b-tiled-a837068d.tiff => seq-3c-8b-tiled-8743c999.tiff} (100%)
 rename tests/images/seq/{seq-3c-i16-8b69ff38.tiff => seq-3c-i16-f7fcf423.tiff} (100%)
 rename tests/images/seq/{seq-3c-i8-a5e96bf3.tiff => seq-3c-i8-d7550ce4.tiff} (100%)
 rename tests/images/seq/{seq-4c-16b-cmyk-e6c1ed1b.tiff => seq-4c-16b-cmyk-c6e52592.tiff} (100%)
 rename tests/images/seq/{seq-4c-16b-rgba-50a4e810.tiff => seq-4c-16b-rgba-5181991f.tiff} (100%)
 rename tests/images/seq/{seq-4c-8b-cmyk-0a0e06d2.tiff => seq-4c-8b-cmyk-352ac1da.tiff} (100%)
 rename tests/images/seq/{seq-4c-8b-rgba-068ac08a.tiff => seq-4c-8b-rgba-50969cda.tiff} (100%)
 rename tests/images/seq/{seq-4c-8b-rgba-unassoc-068ac08a.tiff => seq-4c-8b-rgba-unassoc-50969cda.tiff} (100%)

diff --git a/Cargo.toml b/Cargo.toml
index 36ec8f4..752c199 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -54,9 +54,6 @@ harness = false
 name = "encode"
 harness = false
 
-[[bench]]
-name = "decode"
-harness = false
 
 [[test]]
 name = "decode_libtiffpic"
diff --git a/benches/decode.rs b/benches/decode.rs
deleted file mode 100644
index 51f13f3..0000000
--- a/benches/decode.rs
+++ /dev/null
@@ -1,40 +0,0 @@
-extern crate criterion;
-extern crate tiff;
-
-use criterion::{black_box, Criterion, Throughput};
-use tiff::decoder::Decoder;
-
-fn decode_image(data: &[u8]) {
-    let image = std::io::Cursor::new(data);
-    let mut reader = Decoder::open(black_box(image)).unwrap();
-    reader.next_image().unwrap();
-    reader.read_image().unwrap();
-}
-
-fn main() {
-    let mut c = Criterion::default().configure_from_args();
-
-    // Check if large bench images exist
-    let bench_dir = std::path::Path::new("/tmp/bench-tiff");
-    if !bench_dir.is_dir() {
-        eprintln!("Skipping large image benchmarks: /tmp/bench-tiff/ not found");
-        eprintln!("Generate with: cc -O2 -o /tmp/gen_bench_tiff /tmp/gen_bench_tiff.c -ltiff -lm && /tmp/gen_bench_tiff");
-        return;
-    }
-
-    let mut group = c.benchmark_group("decode-1024x1024");
-    group.sample_size(30);
-
-    for depth in [3, 5, 7, 8, 10, 12, 14, 16, 24] {
-        let path = bench_dir.join(format!("bench-1c-{depth}b.tiff"));
-        if !path.exists() {
-            continue;
-        }
-        let data = std::fs::read(&path).unwrap();
-        group
-            .throughput(Throughput::Bytes(data.len() as u64))
-            .bench_function(format!("{depth}b"), |b| b.iter(|| decode_image(&data)));
-    }
-
-    group.finish();
-}
diff --git a/tests/decode_images.rs b/tests/decode_images.rs
index c825728..eaf414e 100644
--- a/tests/decode_images.rs
+++ b/tests/decode_images.rs
@@ -1,6 +1,7 @@
 extern crate tiff;
 
 use tiff::decoder::{ifd, Decoder, DecodingResult};
+use tiff::tags::{ByteOrder, Type};
 use tiff::ColorType;
 
 use std::fs::File;
@@ -83,7 +84,7 @@ fn compute_tiff_hash<R: Read + Seek>(reader: R) -> u32 {
         decoder.next_image().expect("Cannot read image IFD");
         let (width, height) = decoder.dimensions().unwrap();
         let color_type = decoder.colortype().unwrap();
-        let result = decoder.read_image().unwrap();
+        let mut result = decoder.read_image().unwrap();
 
         // Hash page index + dimensions
         hasher.update(&page.to_le_bytes());
@@ -111,73 +112,27 @@ fn compute_tiff_hash<R: Read + Seek>(reader: R) -> u32 {
             other => panic!("compute_tiff_hash: unhandled ColorType {other:?}"),
         }
 
-        // Hash decoded data with type discriminant + LE sample bytes
-        match result {
-            DecodingResult::U8(ref data) => {
-                hasher.update(&[0]);
-                hasher.update(data);
-            }
-            DecodingResult::U16(ref data) => {
-                hasher.update(&[1]);
-                for v in data {
-                    hasher.update(&v.to_le_bytes());
-                }
-            }
-            DecodingResult::U32(ref data) => {
-                hasher.update(&[2]);
-                for v in data {
-                    hasher.update(&v.to_le_bytes());
-                }
-            }
-            DecodingResult::U64(ref data) => {
-                hasher.update(&[3]);
-                for v in data {
-                    hasher.update(&v.to_le_bytes());
-                }
-            }
-            DecodingResult::F16(ref data) => {
-                hasher.update(&[4]);
-                for v in data {
-                    hasher.update(&v.to_le_bytes());
-                }
-            }
-            DecodingResult::F32(ref data) => {
-                hasher.update(&[5]);
-                for v in data {
-                    hasher.update(&v.to_le_bytes());
-                }
-            }
-            DecodingResult::F64(ref data) => {
-                hasher.update(&[6]);
-                for v in data {
-                    hasher.update(&v.to_le_bytes());
-                }
-            }
-            DecodingResult::I8(ref data) => {
-                hasher.update(&[7]);
-                for v in data {
-                    hasher.update(&v.to_le_bytes());
-                }
-            }
-            DecodingResult::I16(ref data) => {
-                hasher.update(&[8]);
-                for v in data {
-                    hasher.update(&v.to_le_bytes());
-                }
-            }
-            DecodingResult::I32(ref data) => {
-                hasher.update(&[9]);
-                for v in data {
-                    hasher.update(&v.to_le_bytes());
-                }
-            }
-            DecodingResult::I64(ref data) => {
-                hasher.update(&[10]);
-                for v in data {
-                    hasher.update(&v.to_le_bytes());
-                }
-            }
-        }
+        // Hash decoded data: TIFF type tag (u16 repr) + LE sample bytes.
+        // Map each variant to the corresponding TIFF Type for byte-order normalization.
+        let sample_type = match &result {
+            DecodingResult::U8(_) => Type::BYTE,
+            DecodingResult::I8(_) => Type::SBYTE,
+            DecodingResult::U16(_) => Type::SHORT,
+            DecodingResult::I16(_) => Type::SSHORT,
+            DecodingResult::U32(_) => Type::LONG,
+            DecodingResult::I32(_) => Type::SLONG,
+            DecodingResult::F32(_) => Type::FLOAT,
+            DecodingResult::U64(_) => Type::LONG8,
+            DecodingResult::I64(_) => Type::SLONG8,
+            DecodingResult::F64(_) => Type::DOUBLE,
+            DecodingResult::F16(_) => Type::SHORT, // f16 is 2 bytes like SHORT
+        };
+        hasher.update(&sample_type.to_u16().to_le_bytes());
+
+        let mut buf = result.as_buffer(0);
+        let bytes = buf.as_bytes_mut();
+        ByteOrder::native().convert(sample_type, bytes, ByteOrder::LittleEndian);
+        hasher.update(bytes);
 
         page += 1;
         if !decoder.more_images() {
diff --git a/tests/images/seq/seq-1c-10b-ebb39b8d.tiff b/tests/images/seq/seq-1c-10b-6d739fa2.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-10b-ebb39b8d.tiff
rename to tests/images/seq/seq-1c-10b-6d739fa2.tiff
diff --git a/tests/images/seq/seq-1c-10b-hpredict-ebb39b8d.tiff b/tests/images/seq/seq-1c-10b-hpredict-6d739fa2.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-10b-hpredict-ebb39b8d.tiff
rename to tests/images/seq/seq-1c-10b-hpredict-6d739fa2.tiff
diff --git a/tests/images/seq/seq-1c-10b-miniswhite-ebb39b8d.tiff b/tests/images/seq/seq-1c-10b-miniswhite-6d739fa2.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-10b-miniswhite-ebb39b8d.tiff
rename to tests/images/seq/seq-1c-10b-miniswhite-6d739fa2.tiff
diff --git a/tests/images/seq/seq-1c-12b-349c9c76.tiff b/tests/images/seq/seq-1c-12b-47c39b31.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-12b-349c9c76.tiff
rename to tests/images/seq/seq-1c-12b-47c39b31.tiff
diff --git a/tests/images/seq/seq-1c-12b-hpredict-349c9c76.tiff b/tests/images/seq/seq-1c-12b-hpredict-47c39b31.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-12b-hpredict-349c9c76.tiff
rename to tests/images/seq/seq-1c-12b-hpredict-47c39b31.tiff
diff --git a/tests/images/seq/seq-1c-12b-miniswhite-349c9c76.tiff b/tests/images/seq/seq-1c-12b-miniswhite-47c39b31.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-12b-miniswhite-349c9c76.tiff
rename to tests/images/seq/seq-1c-12b-miniswhite-47c39b31.tiff
diff --git a/tests/images/seq/seq-1c-14b-7e799edf.tiff b/tests/images/seq/seq-1c-14b-e883657f.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-14b-7e799edf.tiff
rename to tests/images/seq/seq-1c-14b-e883657f.tiff
diff --git a/tests/images/seq/seq-1c-14b-hpredict-7e799edf.tiff b/tests/images/seq/seq-1c-14b-hpredict-e883657f.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-14b-hpredict-7e799edf.tiff
rename to tests/images/seq/seq-1c-14b-hpredict-e883657f.tiff
diff --git a/tests/images/seq/seq-1c-14b-miniswhite-7e799edf.tiff b/tests/images/seq/seq-1c-14b-miniswhite-e883657f.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-14b-miniswhite-7e799edf.tiff
rename to tests/images/seq/seq-1c-14b-miniswhite-e883657f.tiff
diff --git a/tests/images/seq/seq-1c-16b-bigendian-6b088a4a.tiff b/tests/images/seq/seq-1c-16b-bigendian-68f373a0.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-16b-bigendian-6b088a4a.tiff
rename to tests/images/seq/seq-1c-16b-bigendian-68f373a0.tiff
diff --git a/tests/images/seq/seq-1c-16b-deflate-6b088a4a.tiff b/tests/images/seq/seq-1c-16b-deflate-68f373a0.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-16b-deflate-6b088a4a.tiff
rename to tests/images/seq/seq-1c-16b-deflate-68f373a0.tiff
diff --git a/tests/images/seq/seq-1c-16b-lzw-6b088a4a.tiff b/tests/images/seq/seq-1c-16b-lzw-68f373a0.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-16b-lzw-6b088a4a.tiff
rename to tests/images/seq/seq-1c-16b-lzw-68f373a0.tiff
diff --git a/tests/images/seq/seq-1c-16b-multistrip-6b088a4a.tiff b/tests/images/seq/seq-1c-16b-multistrip-68f373a0.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-16b-multistrip-6b088a4a.tiff
rename to tests/images/seq/seq-1c-16b-multistrip-68f373a0.tiff
diff --git a/tests/images/seq/seq-1c-16b-tiled-6b088a4a.tiff b/tests/images/seq/seq-1c-16b-tiled-68f373a0.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-16b-tiled-6b088a4a.tiff
rename to tests/images/seq/seq-1c-16b-tiled-68f373a0.tiff
diff --git a/tests/images/seq/seq-1c-1b-f2966d13.tiff b/tests/images/seq/seq-1c-1b-71f6a21a.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-1b-f2966d13.tiff
rename to tests/images/seq/seq-1c-1b-71f6a21a.tiff
diff --git a/tests/images/seq/seq-1c-1b-miniswhite-f2966d13.tiff b/tests/images/seq/seq-1c-1b-miniswhite-71f6a21a.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-1b-miniswhite-f2966d13.tiff
rename to tests/images/seq/seq-1c-1b-miniswhite-71f6a21a.tiff
diff --git a/tests/images/seq/seq-1c-24b-8e6d7cb5.tiff b/tests/images/seq/seq-1c-24b-072a9dc9.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-24b-8e6d7cb5.tiff
rename to tests/images/seq/seq-1c-24b-072a9dc9.tiff
diff --git a/tests/images/seq/seq-1c-24b-hpredict-8e6d7cb5.tiff b/tests/images/seq/seq-1c-24b-hpredict-072a9dc9.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-24b-hpredict-8e6d7cb5.tiff
rename to tests/images/seq/seq-1c-24b-hpredict-072a9dc9.tiff
diff --git a/tests/images/seq/seq-1c-24b-miniswhite-8e6d7cb5.tiff b/tests/images/seq/seq-1c-24b-miniswhite-072a9dc9.tiff
similarity index 100%
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rename to tests/images/seq/seq-1c-24b-miniswhite-072a9dc9.tiff
diff --git a/tests/images/seq/seq-1c-2b-eb3e4e3a.tiff b/tests/images/seq/seq-1c-2b-58b25f76.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-2b-eb3e4e3a.tiff
rename to tests/images/seq/seq-1c-2b-58b25f76.tiff
diff --git a/tests/images/seq/seq-1c-32f-a6d061ac.tiff b/tests/images/seq/seq-1c-32f-390fe673.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-32f-a6d061ac.tiff
rename to tests/images/seq/seq-1c-32f-390fe673.tiff
diff --git a/tests/images/seq/seq-1c-32f-deflate-fpredict-a6d061ac.tiff b/tests/images/seq/seq-1c-32f-deflate-fpredict-390fe673.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-32f-deflate-fpredict-a6d061ac.tiff
rename to tests/images/seq/seq-1c-32f-deflate-fpredict-390fe673.tiff
diff --git a/tests/images/seq/seq-1c-3b-b64646a5.tiff b/tests/images/seq/seq-1c-3b-ef237c07.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-3b-b64646a5.tiff
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diff --git a/tests/images/seq/seq-1c-3b-miniswhite-b64646a5.tiff b/tests/images/seq/seq-1c-3b-miniswhite-ef237c07.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-3b-miniswhite-b64646a5.tiff
rename to tests/images/seq/seq-1c-3b-miniswhite-ef237c07.tiff
diff --git a/tests/images/seq/seq-1c-4b-b3c1805b.tiff b/tests/images/seq/seq-1c-4b-fb92dcae.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-4b-b3c1805b.tiff
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diff --git a/tests/images/seq/seq-1c-4b-miniswhite-b3c1805b.tiff b/tests/images/seq/seq-1c-4b-miniswhite-fb92dcae.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-4b-miniswhite-b3c1805b.tiff
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rename from tests/images/seq/seq-1c-5b-miniswhite-59011bc5.tiff
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rename from tests/images/seq/seq-1c-64f-8a733620.tiff
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diff --git a/tests/images/seq/seq-1c-64f-deflate-fpredict-8a733620.tiff b/tests/images/seq/seq-1c-64f-deflate-fpredict-afa8560e.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-64f-deflate-fpredict-8a733620.tiff
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similarity index 100%
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diff --git a/tests/images/seq/seq-1c-8b-bigendian-86098311.tiff b/tests/images/seq/seq-1c-8b-bigendian-20f3db0c.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-8b-bigendian-86098311.tiff
rename to tests/images/seq/seq-1c-8b-bigendian-20f3db0c.tiff
diff --git a/tests/images/seq/seq-1c-8b-bigtiff-86098311.tiff b/tests/images/seq/seq-1c-8b-bigtiff-20f3db0c.tiff
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rename from tests/images/seq/seq-1c-8b-bigtiff-86098311.tiff
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diff --git a/tests/images/seq/seq-1c-8b-deflate-86098311.tiff b/tests/images/seq/seq-1c-8b-deflate-20f3db0c.tiff
similarity index 100%
rename from tests/images/seq/seq-1c-8b-deflate-86098311.tiff
rename to tests/images/seq/seq-1c-8b-deflate-20f3db0c.tiff
diff --git a/tests/images/seq/seq-1c-8b-lzw-86098311.tiff b/tests/images/seq/seq-1c-8b-lzw-20f3db0c.tiff
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rename from tests/images/seq/seq-1c-8b-lzw-86098311.tiff
rename to tests/images/seq/seq-1c-8b-lzw-20f3db0c.tiff
diff --git a/tests/images/seq/seq-1c-8b-lzw-hpredict-86098311.tiff b/tests/images/seq/seq-1c-8b-lzw-hpredict-20f3db0c.tiff
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rename to tests/images/seq/seq-1c-8b-lzw-hpredict-20f3db0c.tiff
diff --git a/tests/images/seq/seq-1c-8b-multipage-0c8d8775.tiff b/tests/images/seq/seq-1c-8b-multipage-adeefdcc.tiff
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diff --git a/tests/images/seq/seq-1c-8b-tiled-deflate-86098311.tiff b/tests/images/seq/seq-1c-8b-tiled-deflate-20f3db0c.tiff
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