Add DelayGenerator for all file backends

This commit is contained in:
B3n30
2018-02-24 14:14:54 +01:00
parent 58b16c5459
commit 06a7676ed1
13 changed files with 172 additions and 71 deletions

View File

@ -23,8 +23,9 @@ std::string IVFCArchive::GetName() const {
ResultVal<std::unique_ptr<FileBackend>> IVFCArchive::OpenFile(const Path& path,
const Mode& mode) const {
std::unique_ptr<DelayGenerator> delay_generator = std::make_unique<IVFCDelayGenerator>();
return MakeResult<std::unique_ptr<FileBackend>>(
std::make_unique<IVFCFile>(romfs_file, data_offset, data_size));
std::make_unique<IVFCFile>(romfs_file, data_offset, data_size, std::move(delay_generator)));
}
ResultCode IVFCArchive::DeleteFile(const Path& path) const {
@ -89,8 +90,11 @@ u64 IVFCArchive::GetFreeBytes() const {
////////////////////////////////////////////////////////////////////////////////////////////////////
IVFCFile::IVFCFile(std::shared_ptr<FileUtil::IOFile> file, u64 offset, u64 size)
: romfs_file(std::move(file)), data_offset(offset), data_size(size) {}
IVFCFile::IVFCFile(std::shared_ptr<FileUtil::IOFile> file, u64 offset, u64 size,
std::unique_ptr<DelayGenerator> delay_generator_)
: romfs_file(std::move(file)), data_offset(offset), data_size(size) {
delay_generator = std::move(delay_generator_);
}
ResultVal<size_t> IVFCFile::Read(const u64 offset, const size_t length, u8* buffer) const {
LOG_TRACE(Service_FS, "called offset=%llu, length=%zu", offset, length);
@ -107,17 +111,6 @@ ResultVal<size_t> IVFCFile::Write(const u64 offset, const size_t length, const b
return MakeResult<size_t>(0);
}
u64 IVFCFile::GetReadDelayNs(size_t length) const {
// The delay was measured on O3DS and O2DS with
// https://gist.github.com/B3n30/ac40eac20603f519ff106107f4ac9182
// from the results the average of each length was taken.
static constexpr u64 slope(94);
static constexpr u64 offset(582778);
static constexpr u64 minimum(663124);
u64 IPCDelayNanoseconds = std::max<u64>(static_cast<u64>(length) * slope + offset, minimum);
return IPCDelayNanoseconds;
}
u64 IVFCFile::GetSize() const {
return data_size;
}