Feature/oro 0 precomp zstd

[RichardGe]

This allows us to compress the precompiled kernels that are embedded inside the HIPRT DLL.

[KaoCC]

This API relies on the special value (uncompressed_sizeByte > 0) to decide which action to take, which would be error-prone and not very user-friendly.

I suggest to change it to one of the followings:

Create another function to handle the "NOT compressed" case, and let this function to solely handle the data that are "compressed". Or you can rename the function and utilize function overloading.

2. Rename the function (Maybe call it "HandlePrecompiled" ), and use std::optional ( e.g., std::optional<size_t> uncompressed_sizeByte = std::nullopt)

and then you can check it like this:

if (uncompressed_sizeByte.has_value()) {
    // handle decompression
} else {
    // treat as raw input
}

Wrap the input into different structures:

struct CompressedBuffer {
    const unsigned char* data;
    size_t size;
    size_t uncompressedSize;
};

struct RawBuffer {
    const unsigned char* data;
    size_t size;
};

And then you use function overloading such as:

static void HandlePrecompiled(std::vector<unsigned char>& out, const CompressedBuffer& buffer);
static void HandlePrecompiled(std::vector<unsigned char>& out, const RawBuffer& buffer);