mirror of
https://github.com/hrydgard/ppsspp.git
synced 2024-11-23 21:39:52 +00:00
88 lines
2.9 KiB
C++
88 lines
2.9 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#include "zlib.h"
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#include "Common/CommonTypes.h"
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#include "Core/HLE/HLE.h"
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#include "Core/HLE/FunctionWrappers.h"
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#include "Core/MemMap.h"
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int sceZlibDecompress(u32 OutBuffer, int OutBufferLength, u32 InBuffer, u32 Crc32Addr) {
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DEBUG_LOG(HLE, "sceZlibDecompress(%08x, %x, %08x, %08x)", OutBuffer, OutBufferLength, InBuffer, Crc32Addr);
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int err;
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uLong crc;
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z_stream stream;
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u8 *outBufferPtr;
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u32 *crc32AddrPtr = 0;
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if (!Memory::IsValidAddress(OutBuffer) || !Memory::IsValidAddress(InBuffer)) {
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ERROR_LOG(HLE, "sceZlibDecompress: Bad address %08x %08x", OutBuffer, InBuffer);
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return 0;
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}
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if (Crc32Addr) {
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if (!Memory::IsValidAddress(Crc32Addr)) {
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ERROR_LOG(HLE, "sceZlibDecompress: Bad address %08x", Crc32Addr);
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return 0;
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}
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crc32AddrPtr = (u32 *)Memory::GetPointer(Crc32Addr);
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}
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outBufferPtr = Memory::GetPointer(OutBuffer);
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stream.next_in = (Bytef*)Memory::GetPointer(InBuffer);
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stream.avail_in = (uInt)OutBufferLength;
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stream.next_out = outBufferPtr;
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stream.avail_out = (uInt)OutBufferLength;
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stream.zalloc = (alloc_func)0;
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stream.zfree = (free_func)0;
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err = inflateInit(&stream);
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if (err != Z_OK) {
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ERROR_LOG(HLE, "sceZlibDecompress: inflateInit failed %08x", err);
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return 0;
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}
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err = inflate(&stream, Z_FINISH);
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if (err != Z_STREAM_END) {
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inflateEnd(&stream);
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ERROR_LOG(HLE, "sceZlibDecompress: inflate failed %08x", err);
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return 0;
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}
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inflateEnd(&stream);
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if (crc32AddrPtr) {
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crc = crc32(0L, Z_NULL, 0);
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*crc32AddrPtr = crc32(crc, outBufferPtr, stream.total_out);
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}
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return stream.total_out;
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}
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const HLEFunction sceDeflt[] = {
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{0x0BA3B9CC, 0, "sceGzipGetCompressedData"},
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{0x106A3552, 0, "sceGzipGetName"},
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{0x1B5B82BC, 0, "sceGzipIsValid"},
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{0x2EE39A64, 0, "sceZlibAdler32"},
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{0x44054E03, 0, "sceDeflateDecompress"},
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{0x6A548477, 0, "sceZlibGetCompressedData"},
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{0x6DBCF897, 0, "sceGzipDecompress"},
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{0x8AA82C92, 0, "sceGzipGetInfo"},
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{0xA9E4FB28, WrapI_UIUU<sceZlibDecompress>, "sceZlibDecompress"},
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{0xAFE01FD3, 0, "sceZlibGetInfo"},
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{0xB767F9A0, 0, "sceGzipGetComment"},
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{0xE46EB986, 0, "sceZlibIsValid"},
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};
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void Register_sceDeflt() {
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RegisterModule("sceDeflt", ARRAY_SIZE(sceDeflt), sceDeflt);
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}
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