voxelcoreprojects/voxelcore
1
0
Fork 0
mirror of https://github.com/MihailRis/voxelcore.git synced 2026-10-05 02:51:49 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

reduce allocations while reading chunks data

Browse source
This commit is contained in:
MihailRis 2025-12-06 00:58:13 +03:00
parent 21f7390265
commit 9dc9441902
12 changed files with 93 additions and 43 deletions
Download patch file Download diff file Expand all files Collapse all files

39
src/coders/compression.cpp
View file

@ -85,12 +85,12 @@ std::unique_ptr<ubyte[]> compression::decompress(
throw std::invalid_argument("compression method is NONE");
case Method::EXTRLE8: {
auto decompressed = std::make_unique<ubyte[]>(dstlen);
extrle::decode(src, srclen, decompressed.get());
extrle::decode(src, srclen, decompressed.get(), dstlen);
return decompressed;
}
case Method::EXTRLE16: {
auto decompressed = std::make_unique<ubyte[]>(dstlen);
size_t decoded = extrle::decode16(src, srclen, decompressed.get());
size_t decoded = extrle::decode16(src, srclen, decompressed.get(), dstlen);
if (decoded != dstlen) {
throw std::runtime_error(
"expected decompressed size " + std::to_string(dstlen) +
@ -110,6 +110,39 @@ std::unique_ptr<ubyte[]> compression::decompress(
return decompressed;
}
default:
throw std::runtime_error("not implemented");
throw std::runtime_error("method not implemented");
}
}
void compression::decompress(const util::span<ubyte> src, ubyte* dst, size_t dstlen, Method method) {
switch (method) {
case Method::NONE:
throw std::invalid_argument("compression method is NONE");
case Method::EXTRLE8:
extrle::decode(src.data(), src.size(), dst, dstlen);
break;
case Method::EXTRLE16: {
size_t decoded =
extrle::decode16(src.data(), src.size(), dst, dstlen);
if (decoded != dstlen) {
throw std::runtime_error(
"expected decompressed size " + std::to_string(dstlen) +
" got " + std::to_string(decoded)
);
}
break;
}
case Method::GZIP: {
auto buffer = gzip::decompress(src.data(), src.size());
if (buffer.size() != dstlen) {
throw std::runtime_error(
"expected decompressed size " + std::to_string(dstlen) +
" got " + std::to_string(buffer.size())
);
}
std::memcpy(dst, buffer.data(), buffer.size());
}
default:
throw std::runtime_error("method not implemented");
}
}