diff options
Diffstat (limited to '')
| -rw-r--r-- | src/fileload.cpp | 134 |
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;
+}
+
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