1 files changed, 134 insertions, 0 deletions
diff --git a/src/fileload.cpp b/src/fileload.cpp
new file mode 100644
index 0000000..5f60e8c
--- /dev/null
+++ b/src/fileload.cpp
@@ -0,0 +1,134 @@
+#include "fileload.h"
+
+extern "C" void UncompressBackward(void *bottom);
+
+
+void *LoadFile(FileHandle *handle, const char *name) {
+	OSReport("[LoadFile %s]\n", name);
+
+	int entryNum = DVDConvertPathToEntrynum(name);
+
+	DVDHandle dvdhandle;
+	if (!DVDFastOpen(entryNum, &dvdhandle)) {
+		OSReport("Cannot open file %s [%d]\n", name, entryNum);
+		return 0;
+	}
+
+	handle->length = dvdhandle.length;
+	handle->filePtr = EGG__Heap__alloc((handle->length+0x1F) & ~0x1F, 0x20, GetArchiveHeap());
+
+	int ret = DVDReadPrio(&dvdhandle, handle->filePtr, (handle->length+0x1F) & ~0x1F, 0, 2);
+
+	DVDClose(&dvdhandle);
+
+	OSReport("[Success %p]\n", handle->filePtr);
+
+	return handle->filePtr;
+}
+
+void *LoadCompressedFile(FileHandle *handle, const char *name) {
+	OSReport("[LoadCompressedFile %s]\n", name);
+
+	int entryNum = DVDConvertPathToEntrynum(name);
+
+	DVDHandle dvdhandle;
+	if (!DVDFastOpen(entryNum, &dvdhandle)) {
+		OSReport("Cannot open file %s [%d]\n", name, entryNum);
+		return 0;
+	}
+
+	u32 infoBlock[0x20 / sizeof(u32)] __attribute__ ((aligned(32)));
+	DVDReadPrio(&dvdhandle, infoBlock, 0x20, dvdhandle.length - 8, 2);
+
+	// Reverse it!
+	infoBlock[1] = (infoBlock[1] >> 24) | ((infoBlock[1] >> 8) & 0xFF00) | ((infoBlock[1] & 0xFF00) << 8) | ((infoBlock[1] & 0xFF) << 24);
+
+	u32 uncompSize = dvdhandle.length + infoBlock[1];
+	OSReport("[Comp:%d UnComp:%d]\n", dvdhandle.length, uncompSize);
+	handle->length = uncompSize;
+	handle->filePtr = EGG__Heap__alloc((uncompSize+0x1F) & ~0x1F, 0x20, GetArchiveHeap());
+
+	int ret = DVDReadPrio(&dvdhandle, handle->filePtr, (dvdhandle.length+0x1F) & ~0x1F, 0, 2);
+
+	DVDClose(&dvdhandle);
+
+	UncompressBackward((void*)((u32)handle->filePtr + dvdhandle.length));
+
+	OSReport("[Success %p]\n", handle->filePtr);
+
+	return handle->filePtr;
+}
+
+bool FreeFile(FileHandle *handle) {
+	if (!handle) return false;
+
+	if (handle->filePtr) {
+		OSReport("[FreeFile %p]\n", handle->filePtr);
+		EGG__Heap__free(handle->filePtr, GetArchiveHeap());
+	}
+
+	handle->filePtr = 0;
+	handle->length = 0;
+
+	return true;
+}
+
+
+
+
+File::File() {
+	m_loaded = false;
+}
+
+File::~File() {
+	close();
+}
+
+bool File::open(const char *filename) {
+	if (m_loaded)
+		close();
+
+	void *ret = LoadFile(&m_handle, filename);
+	if (ret != 0)
+		m_loaded = true;
+
+	return (ret != 0);
+}
+
+bool File::openCompressed(const char *filename) {
+	if (m_loaded)
+		close();
+
+	void *ret = LoadCompressedFile(&m_handle, filename);
+	if (ret != 0)
+		m_loaded = true;
+
+	return (ret != 0);
+}
+
+void File::close() {
+	if (!m_loaded)
+		return;
+
+	m_loaded = false;
+	FreeFile(&m_handle);
+}
+
+bool File::isOpen() {
+	return m_loaded;
+}
+
+void *File::ptr() {
+	if (m_loaded)
+		return m_handle.filePtr;
+	else
+		return 0;
+}
+
+u32 File::length() {
+	if (m_loaded)
+		return m_handle.length;
+	else
+		return 0xFFFFFFFF;
+}
+