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[core] Support block-compressed NSZ and XCZ (#4552)

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- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions).
- [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md).
- [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability.

-------------------
- Add NCZBLOCK (nsz -B / .xcz) reader: each read decodes only the covered blocks and re-encrypts CTR sections, no disk output.
- Allow installing solid .nsz to NAND via DecompressNCZForInstall (lazy, incremental decode with frontier, O(n) instead of O(n^2)).
- Accept BKTR updates with thousands of sections (MaxSectionCount = 0x10000).
- Wire .nsz/.xcz into loader, registered cache, scanner, and NAND install (content_manager.h), and reject solid NCZ from the game list.
- Bump the pinned zstd to 33618c8 in cpmfile.json, which includes the upstream AArch64 revert ([33618c89](https://github.com/facebook/zstd/commit/33618c89e511637f8a6ef955b3501766d71feb53)) for a ZSTD_decodeSequence branch optimization that could corrupt data on ARM64; without it, solid NCZ decoding on Android fails with "Data corruption detected".

NCZ format and CTR counter semantics follow the reference nsz tool and its
Rust port:
- https://github.com/nicoboss/nsz (Decompressor.py, BlockDecompressorReader.py)
- https://docs.rs/nsz-rs/0.3.0/src/nsz_rs/decompress.rs.html

The last-block edge case (decompressed size is an exact multiple of block
size) is handled as described in https://github.com/nicoboss/nsz/issues/210

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4552
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: Shinmegumi <shinmegumi@eden-emu.dev>
This commit is contained in:
PavelBARABANOV
2026-10-26 17:23:18 +01:00
committed by crueter
parent 05f36d990c
commit 58968bd127
18 changed files with 624 additions and 27 deletions
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src/yuzu/main_window.cpp
+7 -4
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@@ -2797,9 +2797,9 @@ void MainWindow::IncrementInstallProgress() {
void MainWindow::OnMenuInstallToNAND() {
const QString file_filter =
tr("Installable Switch File (*.nca *.nsp *.xci);;Nintendo Content Archive "
"(*.nca);;Nintendo Submission Package (*.nsp);;NX Cartridge "
"Image (*.xci)");
tr("Installable Switch File (*.nca *.nsp *.nsz *.xci *.xcz);;Nintendo Content Archive "
"(*.nca);;Nintendo Submission Package (*.nsp *.nsz);;NX Cartridge "
"Image (*.xci *.xcz)");
QStringList filenames = QFileDialog::getOpenFileNames(
this, tr("Install Files"), QString::fromStdString(UISettings::values.roms_path),
@@ -2856,7 +2856,10 @@ void MainWindow::OnMenuInstallToNAND() {
QFuture<ContentManager::InstallResult> future;
ContentManager::InstallResult result;
if (file.endsWith(QStringLiteral("nsp"), Qt::CaseInsensitive)) {
if (file.endsWith(QStringLiteral("nsp"), Qt::CaseInsensitive) ||
file.endsWith(QStringLiteral("nsz"), Qt::CaseInsensitive) ||
file.endsWith(QStringLiteral("xci"), Qt::CaseInsensitive) ||
file.endsWith(QStringLiteral("xcz"), Qt::CaseInsensitive)) {
const auto progress_callback = [this](size_t size, size_t progress) {
emit UpdateInstallProgress();
if (install_progress->wasCanceled()) {