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Code Issues Releases Wiki Activity

Use ZStandard for Park and Replay Files (#24734)

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This commit is contained in:
LRFLEW
2025-08-06 14:50:18 -05:00
committed by GitHub
parent 8ef4b207b9
commit 52e3c774bc
21 changed files with 284 additions and 61 deletions
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28
src/openrct2/ReplayManager.cpp
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@@ -103,9 +103,10 @@ namespace OpenRCT2
class ReplayManager final : public IReplayManager
{
static constexpr uint16_t kReplayVersion = 10;
static constexpr uint16_t kReplayVersion = 11;
static constexpr uint16_t kReplayMinCompatVersion = 10;
static constexpr uint32_t kReplayMagic = 0x5243524F; // ORCR.
static constexpr int kReplayCompressionLevel = Compression::kZlibMaxCompressionLevel;
static constexpr int kReplayCompressionLevel = 18;
static constexpr int kNormalRecordingChecksumTicks = 1;
static constexpr int kSilentRecordingChecksumTicks = 40; // Same as network server
@@ -313,8 +314,9 @@ namespace OpenRCT2
MemoryStream compressed;
stream.SetPosition(0);
bool compressStatus = Compression::zlibCompress(
stream, stream.GetLength(), compressed, Compression::ZlibHeaderType::zlib, kReplayCompressionLevel);
// header already has decompressed length, but no checksum, so use the ZStandard checksum
bool compressStatus = Compression::zstdCompress(
stream, stream.GetLength(), compressed, Compression::ZstdMetadata::checksum, kReplayCompressionLevel);
if (!compressStatus)
throw IOException("Compression Error");
@@ -563,12 +565,18 @@ namespace OpenRCT2
MemoryStream decompressed;
bool decompressStatus = true;
recFile.data.SetPosition(0);
decompressStatus = Compression::zlibDecompress(
recFile.data, recFile.data.GetLength(), decompressed, recFile.uncompressedSize,
Compression::ZlibHeaderType::zlib);
if (recFile.version <= 10)
{
decompressStatus = Compression::zlibDecompress(
recFile.data, recFile.data.GetLength(), decompressed, recFile.uncompressedSize,
Compression::ZlibHeaderType::zlib);
}
else
{
decompressStatus = Compression::zstdDecompress(
recFile.data, recFile.data.GetLength(), decompressed, recFile.uncompressedSize);
}
if (!decompressStatus)
throw IOException("Decompression Error");
@@ -683,7 +691,7 @@ namespace OpenRCT2
bool Compatible(ReplayRecordData& data)
{
return data.version == kReplayVersion;
return data.version >= kReplayMinCompatVersion;
}
bool Serialise(DataSerialiser& serialiser, ReplayRecordData& data)