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// Ported From https://github.com/kiwi515/ogws/blob/master/src/nw4r/ut/ut_DvdFileStream.cpp
#include "nw4r/ut.h"
namespace nw4r {
namespace ut {
NW4R_UT_RTTI_DEF_DERIVED(DvdFileStream, FileStream);
void DvdFileStream::DvdAsyncCallback_(s32 result, DVDFileInfo *info) {
DvdFileStream *self = reinterpret_cast<AsyncContext *>(info)->stream;
self->mIsBusy = false;
self->mResult = result;
if (self->mCallback != NULL) {
self->mCallback(result, self, self->mCallbackArg);
}
}
void DvdFileStream::DvdCBAsyncCallback_(s32 result, DVDCommandBlock *block) {
DvdFileStream *self = reinterpret_cast<AsyncContext *>(block)->stream;
self->mIsCancelling = false;
if (self->mCancelCallback != NULL) {
self->mCancelCallback(result, self, self->mCancelCallbackArg);
}
}
void DvdFileStream::Initialize_() {
mCloseOnDestroy = false;
mAllowClose = false;
mIsOpen = false;
mPriority = DVD_PRIO_MEDIUM;
mIsBusy = false;
mCallback = NULL;
mCallbackArg = NULL;
mResult = DVD_RESULT_OK;
mCancelCallback = NULL;
mIsCancelling = false;
mCancelCallbackArg = NULL;
mAsyncContext.stream = this;
}
DvdFileStream::DvdFileStream(s32 entrynum) {
Initialize_();
Open(entrynum);
}
DvdFileStream::DvdFileStream(const DVDFileInfo *info, bool close) {
Initialize_();
Open(info, close);
}
DvdFileStream::~DvdFileStream() {
if (mCloseOnDestroy) {
Close();
}
}
bool DvdFileStream::Open(s32 entrynum) {
if (mCloseOnDestroy) {
Close();
}
if (DVDFastOpen(entrynum, &mAsyncContext.info)) {
mFilePosition.SetFileSize(mAsyncContext.info.size);
mFilePosition.Seek(0, SEEKORG_BEG);
mCloseOnDestroy = true;
mAllowClose = true;
mIsOpen = true;
return true;
}
return false;
}
bool DvdFileStream::Open(const DVDFileInfo *info, bool close) {
if (mCloseOnDestroy) {
Close();
}
mAsyncContext.info = *info;
mFilePosition.SetFileSize(mAsyncContext.info.size);
mFilePosition.Seek(0, SEEKORG_BEG);
mCloseOnDestroy = false;
mAllowClose = close;
mIsOpen = true;
return true;
}
void DvdFileStream::Close() {
if (mAllowClose && mIsOpen) {
DVDClose(&mAsyncContext.info);
mIsOpen = false;
}
}
s32 DvdFileStream::Read(void *dst, u32 size) {
size = AdjustReadLength_(size);
s32 result = DVDReadPrio(&mAsyncContext.info, dst, size, mFilePosition.Tell(), mPriority);
if (result > 0) {
mFilePosition.Skip(result);
}
return result;
}
bool DvdFileStream::ReadAsync(void *dst, u32 size, AsyncCallback callback, void *arg) {
size = AdjustReadLength_(size);
bool success = DvdFileStream::PeekAsync(dst, size, callback, arg);
if (success) {
mFilePosition.Skip(size);
} else {
mIsBusy = false;
}
return success;
}
s32 DvdFileStream::Peek(void *dst, u32 size) {
size = AdjustReadLength_(size);
return DVDReadPrio(&mAsyncContext.info, dst, size, mFilePosition.Tell(), mPriority);
}
bool DvdFileStream::PeekAsync(void *dst, u32 size, AsyncCallback callback, void *arg) {
mCallback = callback;
mCallbackArg = arg;
mIsBusy = true;
size = AdjustReadLength_(size);
return DVDReadAsyncPrio(&mAsyncContext.info, dst, size, mFilePosition.Tell(), DvdAsyncCallback_, mPriority);
}
void DvdFileStream::Seek(s32 offset, u32 origin) {
mFilePosition.Seek(offset, origin);
}
void DvdFileStream::Cancel() {
DVDCancel(&mAsyncContext.info.block);
}
bool DvdFileStream::CancelAsync(AsyncCallback callback, void *arg) {
mCancelCallback = callback;
mCancelCallbackArg = arg;
BOOL success = DVDCancelAsync(&mAsyncContext.info.block, DvdCBAsyncCallback_);
if (success) {
mIsCancelling = true;
}
return success;
}
u32 DvdFileStream::AdjustReadLength_(u32 len) {
u32 fileOffset = mFilePosition.Tell();
u32 fileSize = mFilePosition.GetFileSize();
u32 alignSize = RoundUp(fileSize, 32);
u32 alignPos = RoundUp(fileOffset + len, 32);
if (alignPos > alignSize) {
len = RoundUp(fileSize - fileOffset, 32);
}
return len;
}
} // namespace ut
} // namespace nw4r
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