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// Copyright (c) the JPEG XL Project Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
use crate::api::{
JxlColorType, JxlDataFormat, JxlDecoder, JxlDecoderInner, JxlDecoderOptions, JxlPixelFormat,
JxlTransferFunction, ProcessingResult, states,
};
use crate::error::Error;
use crate::image::{Image, JxlOutputBuffer, Rect};
use std::path::Path;
use crate::tests::decode::{compare_frames, decode, decode_internal, scan_frames_with_decoder};
#[test]
fn decode_small_chunks() {
arbtest::arbtest(|u| {
decode_internal(
&std::fs::read("resources/test/green_queen_vardct_e3.jxl").unwrap(),
u.arbitrary::<u8>().unwrap() as usize + 1,
false,
false,
None,
None,
)
.unwrap();
Ok(())
});
}
// OOO jxlp boxes require any frame to start in a box that has all the logically-before
// boxes physically before it, and all the logically-after boxes physically after it.
// This test file does *not* satisfy this property.
#[test]
fn decode_ooo_jxlp_invalid_animated_container() {
let data = std::fs::read("resources/test/invalid_animated_ooo_jxlp.jxl").unwrap();
let res = decode(&data);
assert!(
matches!(res, Err(Error::InvalidBox)),
"expected error due to frame start in non-valid checkpoint box"
);
}
#[test]
fn test_preview_size_none_for_regular_files() {
let file = std::fs::read("resources/test/basic.jxl").unwrap();
let options = JxlDecoderOptions::default();
let mut decoder = JxlDecoder::<states::Initialized>::new(options);
let mut input = file.as_slice();
let decoder = loop {
match decoder.process(&mut input).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => decoder = fallback,
}
};
assert!(decoder.basic_info().preview_size.is_none());
}
#[test]
fn test_preview_size_some_for_preview_files() {
let file = std::fs::read("resources/test/with_preview.jxl").unwrap();
let options = JxlDecoderOptions::default();
let mut decoder = JxlDecoder::<states::Initialized>::new(options);
let mut input = file.as_slice();
let decoder = loop {
match decoder.process(&mut input).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => decoder = fallback,
}
};
assert_eq!(decoder.basic_info().preview_size, Some((16, 16)));
}
#[test]
fn test_set_pixel_format() {
let file = std::fs::read("resources/test/basic.jxl").unwrap();
let options = JxlDecoderOptions::default();
let mut decoder = JxlDecoder::<states::Initialized>::new(options);
let mut input = file.as_slice();
let mut decoder = loop {
match decoder.process(&mut input).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => decoder = fallback,
}
};
let default_format = decoder.current_pixel_format().clone();
assert_eq!(default_format.color_type, JxlColorType::Rgb);
let new_format = JxlPixelFormat {
color_type: JxlColorType::Grayscale,
color_data_format: Some(JxlDataFormat::U8 { bit_depth: 8 }),
extra_channel_format: vec![],
};
decoder.set_pixel_format(new_format.clone());
assert_eq!(decoder.current_pixel_format(), &new_format);
}
#[test]
fn test_default_output_tf_by_pixel_format() {
let file = std::fs::read("resources/test/lossy_with_icc.jxl").unwrap();
let options = JxlDecoderOptions::default();
let mut decoder = JxlDecoder::<states::Initialized>::new(options);
let mut input = file.as_slice();
let mut decoder = loop {
match decoder.process(&mut input).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => decoder = fallback,
}
};
assert_eq!(
*decoder.output_color_profile().transfer_function().unwrap(),
JxlTransferFunction::Linear,
);
decoder.set_pixel_format(JxlPixelFormat::rgba8(0));
assert_eq!(
*decoder.output_color_profile().transfer_function().unwrap(),
JxlTransferFunction::SRGB,
);
decoder.set_pixel_format(JxlPixelFormat::rgba_f16(0));
assert_eq!(
*decoder.output_color_profile().transfer_function().unwrap(),
JxlTransferFunction::Linear,
);
decoder.set_pixel_format(JxlPixelFormat::rgba16(0));
assert_eq!(
*decoder.output_color_profile().transfer_function().unwrap(),
JxlTransferFunction::SRGB,
);
}
#[test]
fn test_fill_opaque_alpha_both_pipelines() {
let file = std::fs::read("resources/test/basic.jxl").unwrap();
let rgba_format = JxlPixelFormat {
color_type: JxlColorType::Rgba,
color_data_format: Some(JxlDataFormat::f32()),
extra_channel_format: vec![],
};
for use_simple in [true, false] {
let options = JxlDecoderOptions::default();
let decoder = JxlDecoder::<states::Initialized>::new(options);
let mut input = file.as_slice();
macro_rules! advance_decoder {
($decoder:expr) => {
loop {
match $decoder.process(&mut input).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => {
if input.is_empty() {
panic!("Unexpected end of input");
}
$decoder = fallback;
}
}
}
};
($decoder:expr, $buffers:expr) => {
loop {
match $decoder.process(&mut input, $buffers).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => {
if input.is_empty() {
panic!("Unexpected end of input");
}
$decoder = fallback;
}
}
}
};
}
let mut decoder = decoder;
let mut decoder = advance_decoder!(decoder);
decoder.set_use_simple_pipeline(use_simple);
decoder.set_pixel_format(rgba_format.clone());
let basic_info = decoder.basic_info().clone();
let (width, height) = basic_info.size;
let mut decoder = advance_decoder!(decoder);
let mut color_buffer = Image::<f32>::new((width * 4, height)).unwrap();
let mut buffers: Vec<_> = vec![JxlOutputBuffer::from_image_rect_mut(
color_buffer
.get_rect_mut(Rect {
origin: (0, 0),
size: (width * 4, height),
})
.into_raw(),
)];
let _decoder = advance_decoder!(decoder, &mut buffers);
for y in 0..height {
let row = color_buffer.row(y);
for x in 0..width {
let alpha = row[x * 4 + 3];
assert_eq!(
alpha, 1.0,
"Alpha at ({},{}) should be 1.0, got {} (use_simple={})",
x, y, alpha, use_simple
);
}
}
}
}
/// Test that premultiply_output=true produces premultiplied alpha output
/// from a source with straight (non-premultiplied) alpha.
#[test]
fn test_premultiply_output_straight_alpha() {
let file =
std::fs::read("resources/test/conformance_test_images/alpha_nonpremultiplied.jxl").unwrap();
let rgba_format = JxlPixelFormat {
color_type: JxlColorType::Rgba,
color_data_format: Some(JxlDataFormat::f32()),
extra_channel_format: vec![None],
};
for use_simple in [true, false] {
let (straight_buffer, width, height) =
decode_with_format::<f32>(&file, &rgba_format, use_simple, false);
let (premul_buffer, _, _) =
decode_with_format::<f32>(&file, &rgba_format, use_simple, true);
let mut found_semitransparent = false;
for y in 0..height {
let straight_row = straight_buffer.row(y);
let premul_row = premul_buffer.row(y);
for x in 0..width {
let sr = straight_row[x * 4];
let sg = straight_row[x * 4 + 1];
let sb = straight_row[x * 4 + 2];
let sa = straight_row[x * 4 + 3];
let pr = premul_row[x * 4];
let pg = premul_row[x * 4 + 1];
let pb = premul_row[x * 4 + 2];
let pa = premul_row[x * 4 + 3];
assert!(
(sa - pa).abs() < 1e-5,
"Alpha mismatch at ({},{}): straight={}, premul={} (use_simple={})",
x,
y,
sa,
pa,
use_simple
);
let expected_r = sr * sa;
let expected_g = sg * sa;
let expected_b = sb * sa;
let tol = 0.01;
assert!(
(expected_r - pr).abs() < tol,
"R mismatch at ({},{}): expected={}, got={} (use_simple={})",
x,
y,
expected_r,
pr,
use_simple
);
assert!(
(expected_g - pg).abs() < tol,
"G mismatch at ({},{}): expected={}, got={} (use_simple={})",
x,
y,
expected_g,
pg,
use_simple
);
assert!(
(expected_b - pb).abs() < tol,
"B mismatch at ({},{}): expected={}, got={} (use_simple={})",
x,
y,
expected_b,
pb,
use_simple
);
if sa > 0.01 && sa < 0.99 {
found_semitransparent = true;
}
}
}
assert!(
found_semitransparent,
"Test image should have semi-transparent pixels (use_simple={})",
use_simple
);
}
}
/// Test that premultiply_output=true doesn't double-premultiply
/// when the source already has premultiplied alpha (alpha_associated=true).
#[test]
fn test_premultiply_output_already_premultiplied() {
let file =
std::fs::read("resources/test/conformance_test_images/alpha_premultiplied.jxl").unwrap();
let rgba_format = JxlPixelFormat {
color_type: JxlColorType::Rgba,
color_data_format: Some(JxlDataFormat::f32()),
extra_channel_format: vec![None],
};
for use_simple in [true, false] {
let (without_flag_buffer, width, height) =
decode_with_format::<f32>(&file, &rgba_format, use_simple, false);
let (with_flag_buffer, _, _) =
decode_with_format::<f32>(&file, &rgba_format, use_simple, true);
for y in 0..height {
let without_row = without_flag_buffer.row(y);
let with_row = with_flag_buffer.row(y);
for x in 0..width {
for c in 0..4 {
let without_val = without_row[x * 4 + c];
let with_val = with_row[x * 4 + c];
assert!(
(without_val - with_val).abs() < 1e-5,
"Mismatch at ({},{}) channel {}: without_flag={}, with_flag={} (use_simple={})",
x,
y,
c,
without_val,
with_val,
use_simple
);
}
}
}
}
}
/// Test that animations with reference frames work correctly.
#[test]
fn test_animation_with_reference_frames() {
let file =
std::fs::read("resources/test/conformance_test_images/animation_spline.jxl").unwrap();
let options = JxlDecoderOptions::default();
let decoder = JxlDecoder::<states::Initialized>::new(options);
let mut input = file.as_slice();
let mut decoder = decoder;
let mut decoder = loop {
match decoder.process(&mut input).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => {
decoder = fallback;
}
}
};
let rgb_format = JxlPixelFormat {
color_type: JxlColorType::Rgb,
color_data_format: Some(JxlDataFormat::f32()),
extra_channel_format: vec![],
};
decoder.set_pixel_format(rgb_format);
let basic_info = decoder.basic_info().clone();
let (width, height) = basic_info.size;
let mut frame_count = 0;
loop {
let mut decoder_frame = loop {
match decoder.process(&mut input).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => {
decoder = fallback;
}
}
};
let mut color_buffer = Image::<f32>::new((width * 3, height)).unwrap();
let mut buffers: Vec<_> = vec![JxlOutputBuffer::from_image_rect_mut(
color_buffer
.get_rect_mut(Rect {
origin: (0, 0),
size: (width * 3, height),
})
.into_raw(),
)];
decoder = loop {
match decoder_frame.process(&mut input, &mut buffers).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => {
decoder_frame = fallback;
}
}
};
frame_count += 1;
if !decoder.has_more_frames() {
break;
}
}
assert!(
frame_count > 1,
"Expected multiple frames in animation, got {}",
frame_count
);
}
#[test]
fn test_skip_frame_then_decode_next() {
let file =
std::fs::read("resources/test/conformance_test_images/animation_spline.jxl").unwrap();
let options = JxlDecoderOptions::default();
let decoder = JxlDecoder::<states::Initialized>::new(options);
let mut input = file.as_slice();
let mut decoder = decoder;
let mut decoder = loop {
match decoder.process(&mut input).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => {
decoder = fallback;
}
}
};
let rgb_format = JxlPixelFormat {
color_type: JxlColorType::Rgb,
color_data_format: Some(JxlDataFormat::f32()),
extra_channel_format: vec![],
};
decoder.set_pixel_format(rgb_format);
let basic_info = decoder.basic_info().clone();
let (width, height) = basic_info.size;
let mut decoder_frame = loop {
match decoder.process(&mut input).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => {
decoder = fallback;
}
}
};
let mut decoder = loop {
match decoder_frame.skip_frame(&mut input).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => {
decoder_frame = fallback;
}
}
};
assert!(
decoder.has_more_frames(),
"Animation should have more frames"
);
let mut decoder_frame = loop {
match decoder.process(&mut input).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => {
decoder = fallback;
}
}
};
let mut color_buffer = Image::<f32>::new((width * 3, height)).unwrap();
let mut buffers: Vec<_> = vec![JxlOutputBuffer::from_image_rect_mut(
color_buffer
.get_rect_mut(Rect {
origin: (0, 0),
size: (width * 3, height),
})
.into_raw(),
)];
let decoder = loop {
match decoder_frame.process(&mut input, &mut buffers).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => {
decoder_frame = fallback;
}
}
};
let _ = decoder.has_more_frames();
}
/// Test that u8 output matches f32 output within quantization tolerance.
#[test]
fn test_output_format_u8_matches_f32() {
let file = std::fs::read("resources/test/conformance_test_images/bicycles.jxl").unwrap();
for (color_type, num_samples) in [(JxlColorType::Rgb, 3), (JxlColorType::Bgra, 4)] {
let f32_format = JxlPixelFormat {
color_type,
color_data_format: Some(JxlDataFormat::f32()),
extra_channel_format: vec![],
};
let u8_format = JxlPixelFormat {
color_type,
color_data_format: Some(JxlDataFormat::U8 { bit_depth: 8 }),
extra_channel_format: vec![],
};
for use_simple in [true, false] {
let (f32_buffer, width, height) =
decode_with_format::<f32>(&file, &f32_format, use_simple, false);
let (u8_buffer, _, _) = decode_with_format::<u8>(&file, &u8_format, use_simple, false);
let tolerance = 0.003;
let mut max_error: f32 = 0.0;
for y in 0..height {
let f32_row = f32_buffer.row(y);
let u8_row = u8_buffer.row(y);
for x in 0..(width * num_samples) {
let f32_val = f32_row[x].clamp(0.0, 1.0);
let u8_val = u8_row[x] as f32 / 255.0;
let error = (f32_val - u8_val).abs();
max_error = max_error.max(error);
assert!(
error < tolerance,
"{:?} u8 mismatch at ({},{}): f32={}, u8={} (scaled={}), error={} (use_simple={})",
color_type,
x,
y,
f32_val,
u8_row[x],
u8_val,
error,
use_simple
);
}
}
}
}
}
/// Test that u16 output matches f32 output within quantization tolerance.
#[test]
fn test_output_format_u16_matches_f32() {
use crate::api::Endianness;
let file = std::fs::read("resources/test/conformance_test_images/bicycles.jxl").unwrap();
for (color_type, num_samples) in [(JxlColorType::Rgb, 3), (JxlColorType::Bgra, 4)] {
let f32_format = JxlPixelFormat {
color_type,
color_data_format: Some(JxlDataFormat::f32()),
extra_channel_format: vec![],
};
let u16_format = JxlPixelFormat {
color_type,
color_data_format: Some(JxlDataFormat::U16 {
endianness: Endianness::native(),
bit_depth: 16,
}),
extra_channel_format: vec![],
};
for use_simple in [true, false] {
let (f32_buffer, width, height) =
decode_with_format::<f32>(&file, &f32_format, use_simple, false);
let (u16_buffer, _, _) =
decode_with_format::<u16>(&file, &u16_format, use_simple, false);
let tolerance = 0.0001;
for y in 0..height {
let f32_row = f32_buffer.row(y);
let u16_row = u16_buffer.row(y);
for x in 0..(width * num_samples) {
let f32_val = f32_row[x].clamp(0.0, 1.0);
let u16_val = u16_row[x] as f32 / 65535.0;
let error = (f32_val - u16_val).abs();
assert!(
error < tolerance,
"{:?} u16 mismatch at ({},{}): f32={}, u16={} (scaled={}), error={} (use_simple={})",
color_type,
x,
y,
f32_val,
u16_row[x],
u16_val,
error,
use_simple
);
}
}
}
}
}
/// Test that f16 output matches f32 output within f16 precision tolerance.
#[test]
fn test_output_format_f16_matches_f32() {
use crate::api::Endianness;
use crate::util::f16;
let file = std::fs::read("resources/test/conformance_test_images/bicycles.jxl").unwrap();
for (color_type, num_samples) in [(JxlColorType::Rgb, 3), (JxlColorType::Bgra, 4)] {
let f32_format = JxlPixelFormat {
color_type,
color_data_format: Some(JxlDataFormat::f32()),
extra_channel_format: vec![],
};
let f16_format = JxlPixelFormat {
color_type,
color_data_format: Some(JxlDataFormat::F16 {
endianness: Endianness::native(),
}),
extra_channel_format: vec![],
};
for use_simple in [true, false] {
let (f32_buffer, width, height) =
decode_with_format::<f32>(&file, &f32_format, use_simple, false);
let (f16_buffer, _, _) =
decode_with_format::<f16>(&file, &f16_format, use_simple, false);
let tolerance = 0.002;
for y in 0..height {
let f32_row = f32_buffer.row(y);
let f16_row = f16_buffer.row(y);
for x in 0..(width * num_samples) {
let f32_val = f32_row[x];
let f16_val = f16_row[x].to_f32();
let error = (f32_val - f16_val).abs();
assert!(
error < tolerance,
"{:?} f16 mismatch at ({},{}): f32={}, f16={}, error={} (use_simple={})",
color_type,
x,
y,
f32_val,
f16_val,
error,
use_simple
);
}
}
}
}
}
/// Helper function to decode an image with a specific format.
fn decode_with_format<T: crate::image::ImageDataType>(
file: &[u8],
pixel_format: &JxlPixelFormat,
use_simple: bool,
premultiply: bool,
) -> (Image<T>, usize, usize) {
let options = JxlDecoderOptions {
premultiply_output: premultiply,
..Default::default()
};
let mut decoder = JxlDecoder::<states::Initialized>::new(options);
let mut input = file;
let mut decoder = loop {
match decoder.process(&mut input).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => {
if input.is_empty() {
panic!("Unexpected end of input");
}
decoder = fallback;
}
}
};
decoder.set_use_simple_pipeline(use_simple);
decoder.set_pixel_format(pixel_format.clone());
let basic_info = decoder.basic_info().clone();
let (width, height) = basic_info.size;
let num_samples = pixel_format.color_type.samples_per_pixel();
let decoder = loop {
match decoder.process(&mut input).unwrap() {
ProcessingResult::Complete { result } => break result,
ProcessingResult::NeedsMoreInput { fallback, .. } => {
if input.is_empty() {
panic!("Unexpected end of input");
}
decoder = fallback;
}
}
};
let mut buffer = Image::<T>::new((width * num_samples, height)).unwrap();
let mut buffers: Vec<_> = vec![JxlOutputBuffer::from_image_rect_mut(
buffer
.get_rect_mut(Rect {
origin: (0, 0),
size: (width * num_samples, height),
})
.into_raw(),
)];
let mut decoder = decoder;
loop {
match decoder.process(&mut input, &mut buffers).unwrap() {
ProcessingResult::Complete { .. } => break,
ProcessingResult::NeedsMoreInput { fallback, .. } => {
if input.is_empty() {
panic!("Unexpected end of input");
}
decoder = fallback;
}
}
}
(buffer, width, height)
}
/// Regression test for ClusterFuzz issue 5342436251336704
#[test]
fn test_fuzzer_smallbuffer_overflow() {
use std::panic;
let data = include_bytes!("../../tests/testdata/fuzzer_smallbuffer_overflow.jxl");
let result = panic::catch_unwind(|| {
let _ = decode_internal(data, 1024, false, false, None, None);
});
if let Err(e) = result {
let panic_msg = e
.downcast_ref::<&str>()
.map(|s| s.to_string())
.or_else(|| e.downcast_ref::<String>().cloned())
.unwrap_or_default();
assert!(
!panic_msg.contains("overflow"),
"Unexpected overflow panic: {}",
panic_msg
);
}
}
fn make_box(ty: &[u8; 4], content: &[u8]) -> Vec<u8> {
let len = (8 + content.len()) as u32;
let mut buf = Vec::new();
buf.extend(len.to_be_bytes());
buf.extend(ty);
buf.extend(content);
buf
}
fn add_container_header(container: &mut Vec<u8>) {
let sig = [
0x00, 0x00, 0x00, 0x0c, 0x4a, 0x58, 0x4c, 0x20, 0x0d, 0x0a, 0x87, 0x0a,
];
let ftyp = make_box(b"ftyp", b"jxl \x00\x00\x00\x00jxl ");
container.extend(&sig);
container.extend(&ftyp);
}
fn wrap_with_jxlp_chunks(codestream: &[u8], chunk_starts: &[usize]) -> Vec<u8> {
let mut starts = chunk_starts.to_vec();
starts.sort_unstable();
starts.dedup();
if starts.first().copied() != Some(0) {
starts.insert(0, 0);
}
if starts.last().copied() != Some(codestream.len()) {
starts.push(codestream.len());
}
assert!(starts.len() >= 2);
let mut container = Vec::new();
add_container_header(&mut container);
let num_chunks = starts.len() - 1;
for i in 0..num_chunks {
let begin = starts[i];
let end = starts[i + 1];
assert!(begin <= end && end <= codestream.len());
let mut payload = Vec::with_capacity(4 + (end - begin));
let mut index = i as u32;
if i + 1 == num_chunks {
index |= 0x8000_0000;
}
payload.extend(index.to_be_bytes());
payload.extend(&codestream[begin..end]);
container.extend(make_box(b"jxlp", &payload));
}
container
}
fn assert_start_new_frame_matches_sequential(data: &[u8]) {
let scanned_frames = scan_frames_with_decoder(data, usize::MAX);
let (_n, sequential_frames) = decode(data).unwrap();
arbtest::arbtest(|u| {
let initial_offset =
u.int_in_range(scanned_frames[0].file_offset..=data.len() as u64)? as usize;
let options = JxlDecoderOptions::default();
let mut decoder = JxlDecoderInner::new(options);
let mut input = &data[..initial_offset];
while let ProcessingResult::Complete { .. } = decoder.process(&mut input, None).unwrap() {
if input.is_empty() {
break;
}
}
let num_seeks = u.int_in_range(1..=3)?;
for _ in 0..num_seeks {
let target_visible_index =
u.int_in_range(0..=scanned_frames.len() as u64 - 1)? as usize;
let seek_target = scanned_frames[target_visible_index].seek_target;
let expected = &sequential_frames[target_visible_index];
decoder.start_new_frame(seek_target);
let mut input = &data[seek_target.decode_start_file_offset as usize..];
let result = decoder.process(&mut input, None);
assert!(
matches!(result, Ok(ProcessingResult::Complete { .. })),
"decoder.process: {result:?}"
);
let basic_info = decoder.basic_info().unwrap().clone();
let (width, height) = basic_info.size;
let default_format = decoder.current_pixel_format().unwrap().clone();
let requested_format = JxlPixelFormat {
color_type: default_format.color_type,
color_data_format: Some(JxlDataFormat::f32()),
extra_channel_format: default_format
.extra_channel_format
.iter()
.map(|_| Some(JxlDataFormat::f32()))
.collect(),
};
decoder.set_pixel_format(requested_format.clone());
let channels = requested_format.color_type.samples_per_pixel();
let num_ec = requested_format.extra_channel_format.len();
let mut color_buffer = Image::<f32>::new((width * channels, height)).unwrap();
let mut ec_buffers: Vec<Image<f32>> = (0..num_ec)
.map(|_| Image::<f32>::new((width, height)).unwrap())
.collect();
let mut buffers: Vec<JxlOutputBuffer> = vec![JxlOutputBuffer::from_image_rect_mut(
color_buffer
.get_rect_mut(Rect {
origin: (0, 0),
size: (width * channels, height),
})
.into_raw(),
)];
for ec in ec_buffers.iter_mut() {
buffers.push(JxlOutputBuffer::from_image_rect_mut(
ec.get_rect_mut(Rect {
origin: (0, 0),
size: (width, height),
})
.into_raw(),
));
}
assert!(matches!(
decoder.process(&mut input, Some(&mut buffers)),
Ok(ProcessingResult::Complete { .. })
));
let mut seek_decoded = Vec::with_capacity(1 + num_ec);
seek_decoded.push(color_buffer);
seek_decoded.extend(ec_buffers);
compare_frames(
Path::new("start_new_frame_seek"),
target_visible_index,
expected,
&seek_decoded,
);
let available_bytes = input.len();
let extra_bytes = u.int_in_range(0..=available_bytes as u64)? as usize;
if extra_bytes == 0 {
continue;
}
let mut extra_input = &input[..extra_bytes];
while let ProcessingResult::Complete { .. } =
decoder.process(&mut extra_input, None).unwrap()
{
if extra_input.is_empty() {
break;
}
}
}
Ok(())
});
}
#[test]
fn test_start_new_frame_bare_codestream() {
let data =
std::fs::read("resources/test/conformance_test_images/animation_icos4d.jxl").unwrap();
assert_start_new_frame_matches_sequential(&data);
}
#[test]
fn test_start_new_frame_boxed_jxlp_per_visible_frame() {
let codestream =
std::fs::read("resources/test/conformance_test_images/animation_icos4d.jxl").unwrap();
let scanned_frames = scan_frames_with_decoder(&codestream, usize::MAX);
assert!(scanned_frames.len() > 1, "need multiple frames");
let (decoded_frames, _) = decode(&codestream).unwrap();
assert_eq!(
decoded_frames,
scanned_frames.len(),
"test file should have one codestream frame per visible frame",
);
let mut chunk_starts: Vec<usize> = scanned_frames
.iter()
.map(|f| f.file_offset as usize)
.collect();
chunk_starts.sort_unstable();
chunk_starts.dedup();
assert_eq!(chunk_starts.len(), scanned_frames.len());
let container = wrap_with_jxlp_chunks(&codestream, &chunk_starts);
assert_start_new_frame_matches_sequential(&container);
}
#[test]
fn test_start_new_frame_cropped_traffic_light() {
let data = std::fs::read("resources/test/cropped_traffic_light.jxl").unwrap();
assert_start_new_frame_matches_sequential(&data);
}
#[test]
fn test_scan_still_image() {
let data = std::fs::read("resources/test/green_queen_vardct_e3.jxl").unwrap();
let frames = scan_frames_with_decoder(&data, usize::MAX);
assert_eq!(frames.len(), 1);
assert!(frames[0].is_last);
assert!(frames[0].is_keyframe);
let total_duration_ms: f64 = frames.iter().map(|f| f.duration_ms).sum();
assert_eq!(total_duration_ms, 0.0);
}
#[test]
fn test_scan_bare_animation() {
let data =
std::fs::read("resources/test/conformance_test_images/animation_icos4d_5.jxl").unwrap();
let frames = scan_frames_with_decoder(&data, usize::MAX);
assert!(frames.len() > 1, "expected multiple frames");
for (i, frame) in frames.iter().enumerate() {
assert_eq!(frame.index, i);
}
assert!(frames.last().unwrap().is_last);
assert!(frames[0].is_keyframe);
assert_eq!(
frames[0].seek_target.decode_start_file_offset,
frames[0].file_offset as u64
);
}
#[test]
fn test_scan_animation_offsets_increase() {
let data =
std::fs::read("resources/test/conformance_test_images/animation_icos4d_5.jxl").unwrap();
let frames = scan_frames_with_decoder(&data, usize::MAX);
for i in 1..frames.len() {
assert!(
frames[i].file_offset > frames[i - 1].file_offset,
"frame {} offset {} should be > frame {} offset {}",
i,
frames[i].file_offset,
i - 1,
frames[i - 1].file_offset,
);
}
}
#[test]
fn test_scan_incremental() {
let data =
std::fs::read("resources/test/conformance_test_images/animation_icos4d_5.jxl").unwrap();
let frames = scan_frames_with_decoder(&data, 128);
assert!(frames.len() > 1);
assert!(frames.last().unwrap().is_last);
}
#[test]
fn test_scan_keyframe_detection_still() {
let data = std::fs::read("resources/test/green_queen_vardct_e3.jxl").unwrap();
let frames = scan_frames_with_decoder(&data, usize::MAX);
assert_eq!(frames.len(), 1);
let f = &frames[0];
assert!(f.is_keyframe);
assert_eq!(f.seek_target.decode_start_file_offset, f.file_offset as u64);
assert_eq!(f.seek_target.visible_frames_to_skip, 0);
}
#[test]
fn test_scan_decode_start_file_offset_consistency() {
let data =
std::fs::read("resources/test/conformance_test_images/animation_icos4d_5.jxl").unwrap();
let frames = scan_frames_with_decoder(&data, usize::MAX);
for frame in &frames {
assert!(
frame.seek_target.decode_start_file_offset <= frame.file_offset,
"frame {}: decode_start_file_offset {} > file_offset {}",
frame.index,
frame.seek_target.decode_start_file_offset,
frame.file_offset,
);
assert_eq!(
frame.is_keyframe,
frame.seek_target.visible_frames_to_skip == 0,
"frame {}: keyframe flag should match visible_frames_to_skip",
frame.index,
);
}
}
#[test]
fn test_scan_with_preview() {
let data = std::fs::read("resources/test/with_preview.jxl");
if data.is_err() {
return;
}
let data = data.unwrap();
let frames = scan_frames_with_decoder(&data, usize::MAX);
assert!(frames.len() <= 1);
}
#[test]
fn test_scan_patches_not_keyframe() {
let data = std::fs::read("resources/test/grayscale_patches_var_dct.jxl");
if data.is_err() {
return;
}
let data = data.unwrap();
let frames = scan_frames_with_decoder(&data, usize::MAX);
assert!(!frames.is_empty());
}
/// Regression test for Chromium ClusterFuzz issue 474401148.
#[test]
fn test_fuzzer_xyb_icc_no_panic() {
#[rustfmt::skip]
let data: &[u8] = &[
0xff, 0x0a, 0x01, 0x00, 0x00, 0x04, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x11, 0x25, 0x00,
];
let mut decoder = JxlDecoderInner::new(Default::default());
let mut input = data;
if let Ok(ProcessingResult::Complete { .. }) = decoder.process(&mut input, None)
&& let Some(profile) = decoder.output_color_profile()
{
let _ = profile.try_as_icc();
}
}
/// Regression test for Chromium ClusterFuzz issue 502853162.
#[test]
fn test_scan_frames_only_empty_followup_no_panic_502853162() {
#[rustfmt::skip]
let data: &[u8] = &[
0xff, 0x0a, 0x31, 0xbd, 0xa2, 0xd0, 0x2a, 0x18,
0x07, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x0f, 0xa0, 0x26, 0x00, 0xff,
];
let opts = JxlDecoderOptions {
scan_frames_only: true,
..Default::default()
};
let mut decoder = JxlDecoderInner::new(opts);
let mut input = data;
while decoder.has_more_frames() && !input.is_empty() {
let _ = decoder.process(&mut input, None).unwrap();
}
}
/// Small regression test for issue #728: squeeze transform boundary bug.
#[test]
fn test_squeeze_boundary_minimal() {
let (_, frames) =
decode(&std::fs::read("resources/test/issue728_minimal.jxl").unwrap()).unwrap();
assert_eq!(frames.len(), 1);
let frame = &frames[0];
let buf = &frame[0];
let (xs, ys) = buf.size();
for y in 0..ys {
let row = buf.row(y);
for (x, &v) in row.iter().enumerate().take(xs) {
assert!(
v == 0.0 || v == 1.0,
"pixel ({}, {}) has value {v}, expected 0.0 or 1.0 \
(issue #728 squeeze boundary bug - minimal test)",
x / 3,
y,
);
}
}
}
/// Regression test for grid boundary bug with odd-width images (issue #728 variant).
#[test]
fn decode_test_strategic_solid_blue_grid_boundary() {
let (_, frames) =
decode(&std::fs::read("resources/test/strategic_solid_blue.jxl").unwrap()).unwrap();
assert_eq!(frames.len(), 1);
let frame = &frames[0];
let buf = &frame[0];
let (xs, ys) = buf.size();
assert_eq!(xs, 257 * 3);
assert_eq!(ys, 256);
for y in 0..ys {
for x in 0..257 {
let row = buf.row(y);
let (r, g, b) = (row[x * 3], row[x * 3 + 1], row[x * 3 + 2]);
assert_eq!(
(r, g, b),
(0.0, 0.0, 1.0),
"pixel ({}, {}) has value ({}, {}, {}), expected (0.0, 0.0, 1.0)",
x,
y,
r,
g,
b,
);
}
}
}