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WIA: Write all headers at the start of the file

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Gets rid of the need to seek to the end of the file
when opening a file.

The downside of this is that we waste a little space,
since we can't know in advance exactly how much
space the compressed parts of the headers will need.
This commit is contained in:
JosJuice
2020-04-19 23:13:51 +02:00
parent e5b9e1ba1f
commit 9dea8169e0
2 changed files with 84 additions and 42 deletions
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7
Source/Core/DiscIO/WIABlob.h
View File

@ -438,9 +438,10 @@ private:
size_t* groups_written, Compressor* compressor, bool compressed_exception_lists,
const std::vector<u8>& exception_lists, const std::vector<u8>& main_data,
std::map<ReuseID, GroupEntry>* reusable_groups, std::optional<ReuseID> reuse_id);
static ConversionResult CompressAndWrite(File::IOFile* file, u64* bytes_written,
Compressor* compressor, const u8* data, size_t size,
size_t* size_out);
static std::optional<std::vector<u8>> Compress(Compressor* compressor, const u8* data,
size_t size);
static bool WriteHeader(File::IOFile* file, const u8* data, size_t size, u64 upper_bound,
u64* bytes_written, u64* offset_out);
template <typename T>
static void PushBack(std::vector<u8>* vector, const T& x)