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Diffstat (limited to 'backends/platform/ds/arm9/source/ramsave.cpp')
| -rw-r--r-- | backends/platform/ds/arm9/source/ramsave.cpp | 538 |
1 files changed, 0 insertions, 538 deletions
diff --git a/backends/platform/ds/arm9/source/ramsave.cpp b/backends/platform/ds/arm9/source/ramsave.cpp deleted file mode 100644 index a0f4633988..0000000000 --- a/backends/platform/ds/arm9/source/ramsave.cpp +++ /dev/null @@ -1,538 +0,0 @@ -/* ScummVM - Graphic Adventure Engine - * - * ScummVM is the legal property of its developers, whose names - * are too numerous to list here. Please refer to the COPYRIGHT - * file distributed with this source distribution. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * - */ -#ifdef GBA_SRAM_SAVE - - -#include "ramsave.h" -#include "nds.h" -#include "compressor/lz.h" - -#define CART_RAM ((vu8 *) (0x0A000000)) -#define SRAM_SAVE_MAX (65533) - -DSSaveFile::DSSaveFile() { - ptr = 0; - saveCompressed = false; - save.isValid = false; - ownsData = false; - isOpenFlag = true; - isTempFile = false; -} - -DSSaveFile::DSSaveFile(SCUMMSave* s, bool compressed, u8* data) { - save = *s; - saveData = data; - ptr = 0; - saveCompressed = compressed; - isOpenFlag = true; - - if (saveCompressed) { - u8* uncompressed = new unsigned char[save.size]; - if (!uncompressed) consolePrintf("Out of memory allocating %d!\n", save.size); - LZ_Uncompress(saveData, uncompressed, save.compressedSize); - saveData = uncompressed; - ownsData = true; - saveCompressed = false; -// consolePrintf("Decompressed. name=%s size=%d (%d)", save.name, save.size, save.compressedSize); - - } else { - ownsData = false; - origHeader = s; - } - - if (save.magic == (int) 0xBEEFCAFE) { - save.isValid = true; - } else { - save.isValid = false; - } - - isTempFile = false; - eosReached = false; -} - -DSSaveFile::~DSSaveFile() { - if (!ownsData) { - *origHeader = save; - DSSaveFileManager::instance()->flushToSaveRAM(); - } - if (ownsData) { - delete[] saveData; - } -} - -bool DSSaveFile::loadFromSaveRAM(vu8* address) { - - SCUMMSave newSave; - - for (int t = 0; t < (int) sizeof(newSave); t++) { - ((char *) (&newSave))[t] = *(address + t); - } - - if (newSave.magic == 0xBEEFCAFE) { - newSave.isValid = true; - - *((u16 *) (0x4000204)) |= 0x3; - - saveData = new unsigned char[newSave.compressedSize]; - - for (int t = 0; t < (int) newSave.compressedSize; t++) { - ((char *) (saveData))[t] = *(address + t + sizeof(newSave)); - } - - if (ownsData) delete[] this->saveData; - save = newSave; - saveCompressed = true; - this->saveData = saveData; - ownsData = true; - ptr = 0; - - return true; - } - - return false; -} - -void DSSaveFile::compress() { - if (!saveCompressed) { - unsigned char* compBuffer = new unsigned char[(save.size * 110) / 100]; - int compSize = LZ_Compress((u8 *) saveData, compBuffer, save.size); - save.compressedSize = compSize; - - - - delete[] saveData; - - // Make the save smaller - saveData = (u8 *) realloc(compBuffer, save.compressedSize); - saveCompressed = true; - } -} - -int DSSaveFile::saveToSaveRAM(vu8* address) { - - unsigned char* compBuffer; - bool failed; - - - int compSize; - - compress(); - - compSize = save.compressedSize; - compBuffer = saveData; - - if (DSSaveFileManager::instance()->getBytesFree() >= getRamUsage()) { - - DSSaveFileManager::instance()->addBytesFree(-getRamUsage()); - - // Write header - for (int t = 0; t < sizeof(save); t++) { - while (*(address + t) != ((char *) (&save))[t]) { - *(address + t) = ((char *) (&save))[t]; - } - } - - // Write compressed buffer - for (int t = sizeof(save); t < (int) sizeof(save) + compSize; t++) { - while (*(address + t) != compBuffer[t - sizeof(save)]) { - *(address + t) = compBuffer[t - sizeof(save)]; - } - } - - failed = false; - } else { - failed = true; - } - - - return failed? 0: compSize + sizeof(save); - -} - -void DSSaveFile::reset() { - ptr = 0; - eosReached = false; -} - -uint32 DSSaveFile::read(void *buf, uint32 size) { - if (ptr + size > save.size) { - size = save.size - ptr; - eosReached = true; - if (size < 0) size = 0; - } - memcpy(buf, saveData + ptr, size); -// consolePrintf("byte: %d ", ((u8 *) (buf))[0]); - - ptr += size; - return size; -} - -int32 DSSaveFile::pos() const { - return ptr; -} - -int32 DSSaveFile::size() const { - return save.size; -} - -bool DSSaveFile::seek(int32 pos, int whence) { - switch (whence) { - case SEEK_SET: { - ptr = pos; - break; - } - case SEEK_CUR: { - ptr += pos; - break; - } - case SEEK_END: { - ptr = save.size + pos; - break; - } - } - eosReached = false; - return true; -} - -bool DSSaveFile::eos() const { - return eosReached; -} - -void DSSaveFile::clearErr() { - eosReached = false; -} - -bool DSSaveFile::skip(uint32 bytes) { - ptr = ptr + bytes; - if (ptr > (int) save.size) ptr = save.size; - return true; -} - -uint32 DSSaveFile::write(const void *buf, uint32 size) { - - if (ptr + size > DS_MAX_SAVE_SIZE) { - size = DS_MAX_SAVE_SIZE - ptr; - } - - memcpy(saveData + ptr, buf, size); - ptr += size; - save.size += size; - return size; -} - -bool DSSaveFile::matches(const char *prefix, int num) { - char str[16]; - if (isValid()) { - sprintf(str, "%s%02d", prefix, num); - if (!strcmp(str, save.name)) { - return true; - } else { - return false; - } - } else { - return false; - } -} - -bool DSSaveFile::matches(const char *filename) { - if (isValid()) { - return !strcmp(save.name, filename); - } else { - return false; - } -} - -void DSSaveFile::setName(char *name) { - save.isValid = true; - save.magic = 0xBEEFCAFE; - ownsData = true; - save.size = 0; - save.compressedSize = 0; - saveData = new unsigned char[DS_MAX_SAVE_SIZE]; - strcpy(save.name, name); - - if ((strstr(name, ".s99")) || (strstr(name, ".c"))) { - isTempFile = true; - } else { - isTempFile = false; - } -} - -void DSSaveFile::clearData() { - save.size = 0; - - if (saveCompressed) { - if (ownsData) { - delete[] saveData; - DSSaveFileManager::instance()->addBytesFree(getRamUsage()); - } - saveData = new unsigned char[DS_MAX_SAVE_SIZE]; - saveCompressed = false; - ownsData = true; - } - -} - -void DSSaveFile::deleteFile() { - if (isValid()) { - if (ownsData) { - DSSaveFileManager::instance()->addBytesFree(getRamUsage()); - delete[] saveData; - saveData = NULL; - } - ptr = 0; - saveCompressed = false; - save.isValid = false; - ownsData = false; - isOpenFlag = true; - } -} - -DSSaveFileManager::DSSaveFileManager() { - instancePtr = this; - - *((u16 *) (0x4000204)) |= 0x3; - swiWaitForVBlank(); - - loadAllFromSRAM(); -} - -DSSaveFileManager::~DSSaveFileManager() { - instancePtr = NULL; -} - -void DSSaveFileManager::loadAllFromSRAM() { - int addr = 1; - - for (int r = 0; r < 8; r++) { - gbaSave[r].deleteFile(); - } - - sramBytesFree = SRAM_SAVE_MAX; - - // Try to find saves in save RAM - for (int r = 0; r < 8; r++) { - if (gbaSave[r].loadFromSaveRAM(CART_RAM + addr)) { - addr += gbaSave[r].getRamUsage(); - sramBytesFree -= gbaSave[r].getRamUsage(); - } - } - -} - -void DSSaveFileManager::formatSram() { - for (int r = 0; r < SRAM_SAVE_MAX; r++) { - *(CART_RAM + r) = 0; - } - - loadAllFromSRAM(); -} - -void DSSaveFileManager::listFiles() { - for (int r = 0; r < 8; r++) { - if (gbaSave[r].isValid()) { - consolePrintf("'%s': %d bytes\n", gbaSave[r].getName(), gbaSave[r].getRamUsage()); - } - } - consolePrintf("SRAM free: %d bytes\n", getBytesFree()); -} - -DSSaveFileManager* DSSaveFileManager::instancePtr = NULL; - -DSSaveFile *DSSaveFileManager::openSavefile(const char *filename, bool saveOrLoad) { - for (int r = 0; r < 8; r++) { - if (gbaSave[r].isValid() && (gbaSave[r].matches(filename))) { -// consolePrintf("Matched save %d (%d)\n", r, gbaSave[r].getSize()); - gbaSave[r].reset(); - //consolePrintf("reset "); - if (saveOrLoad) gbaSave[r].clearData(); -// consolePrintf("cleared "); - return gbaSave[r].clone(); - } - } - - if (saveOrLoad) { - return makeSaveFile(filename, saveOrLoad); - } else { - return NULL; - } -} - - - -DSSaveFile* DSSaveFile::clone() { -// consolePrintf("Clone %s %d\n", save.name, save.size); - return new DSSaveFile(&save, saveCompressed, saveData); -} - -void DSSaveFileManager::deleteFile(const char* name) { -// consolePrintf("Deleting %s", name); - for (int r = 0; r < 8; r++) { - if (gbaSave[r].isValid() && (gbaSave[r].matches(name))) { - gbaSave[r].deleteFile(); - } - } - flushToSaveRAM(); -} - -bool DSSaveFileManager::removeSavefile(const Common::String &filename) { - consolePrintf("DSSaveFileManager::removeSavefile : Not implemented yet.\n"); - assert(false); - //TODO: Implement this. Most likely, you just have to use the code of deleteFile? - return false; -} - - -Common::StringArray DSSaveFileManager::listSavefiles(const Common::String &pattern) { - consolePrintf("DSSaveFileManager::listSavefiles : Not implemented yet.\n"); - assert(false); - return Common::StringArray(); - /* - TODO: Implement this. If you don't understand what it should do, just ask - (e.g. on scummvm-devel or Fingolfin). It should be pretty simple if you - use Common::matchString from common/util.h and read the Doxygen docs, - then combine this with the old code below... - */ -} - - -/* -void DSSaveFileManager::listSavefiles(const char *prefix, bool *marks, int num) { - memset(marks, true, num * sizeof(bool)); - return; - - memset(marks, false, num*sizeof(bool)); - - for (int saveNum = 0; saveNum < num; saveNum++) { - for (int r = 0; r < 8; r++) { - if (gbaSave[r].isValid() && (gbaSave[r].matches(prefix, saveNum))) { - marks[saveNum] = true; - } - } - } - -} -*/ - - -DSSaveFile *DSSaveFileManager::makeSaveFile(const char *filename, bool saveOrLoad) { - - // Find a free save slot - int r = 0; - - while ((r < 8) && (gbaSave[r].isValid())) { - r++; - } - - if ((r == 8) && (gbaSave[r].isValid())) { - // No more saves - return NULL; - } else { - // Allocate this save -// consolePrintf("Allocated save %d\n", r); - gbaSave[r].setName((char *) filename); - gbaSave[r].reset(); - return gbaSave[r].clone(); - } -} - -void DSSaveFileManager::flushToSaveRAM() { - int cartAddr = 1; - int s; - int extraData = DSSaveFileManager::getExtraData(); - - *((u16 *) (0x4000204)) |= 0x3; - - swiWaitForVBlank(); - - int size = 0; - for (int r = 0; (r < 8); r++) { - if (gbaSave[r].isValid()) { - gbaSave[r].compress(); - if (!gbaSave[r].isTemp()) size += gbaSave[r].getRamUsage(); - } - } - - if (size <= SRAM_SAVE_MAX) { - - for (int r = 0; r < SRAM_SAVE_MAX; r++) { - *(CART_RAM + r) = 0; - } - - sramBytesFree = SRAM_SAVE_MAX; - - for (int r = 0; (r < 8); r++) { - if (gbaSave[r].isValid() && (!gbaSave[r].isTemp())) { - - cartAddr += s = gbaSave[r].saveToSaveRAM(CART_RAM + cartAddr); - - /* if (s == 0) { - consolePrintf("WARNING: Save didn't fit in cart RAM and has been lost!! Delete files and save again.", gbaSave[r].getName()); - failed = true; - }*/ - } - } - } else { - - consolePrintf("WARNING: Save didn't fit in cart RAM and has been lost!! Delete files and save again."); - loadAllFromSRAM(); - - } - - DSSaveFileManager::setExtraData(extraData); -// consolePrintf("SRAM free: %d bytes\n", getBytesFree()); -} - -void DSSaveFileManager::setExtraData(int data) { - // Offset of extra data is 31. This overlaps the padding and reserved bytes of the first save entry. - // which have not been used up until now. So it should be safe. - - vu8* sram = CART_RAM + 31; - - *(sram + 0) = 0xF0; // This is an identifier to check - *(sram + 1) = 0x0D; // that extra data is present. - - *(sram + 2) = (data & 0xFF000000) >> 24; // Now write the actual data - *(sram + 3) = (data & 0x00FF0000) >> 16; // taking care to use single - *(sram + 4) = (data & 0x0000FF00) >> 8; // byte writes (it's an 8-bit bus) - *(sram + 5) = (data & 0x000000FF); -} - -bool DSSaveFileManager::isExtraDataPresent() { - vu8* sram = CART_RAM + 31; - - // Check for the identifier - return ((*(sram + 0) == 0xF0) && (*(sram + 1) == 0x0D)); -} - -int DSSaveFileManager::getExtraData() { - vu8* sram = CART_RAM + 31; - - if (isExtraDataPresent()) { - int value = (*(sram + 2) << 24) | (*(sram + 3) << 16) | (*(sram + 4) << 8) | (*(sram + 5)); - return value; - } else { - return 0; - } -} - -#endif |