diff options
| author | bushing <bushing@gmail.com> | 2008-12-08 05:30:24 +0000 |
|---|---|---|
| committer | bushing <bushing@gmail.com> | 2008-12-08 05:30:24 +0000 |
| commit | 49cfded60bb5b444d1828190eacc52bbb49a9cb8 (patch) | |
| tree | 0823218c1f2f6eec307dadbdec18c5632625f052 /Source/Core/DiscIO/Src/Blob.cpp | |
| parent | 901fe7c00fec5e2aaf55d184edbcb6d092345d52 (diff) | |
set svn:eol-style=native for **.cpp
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@1442 8ced0084-cf51-0410-be5f-012b33b47a6e
Diffstat (limited to 'Source/Core/DiscIO/Src/Blob.cpp')
| -rw-r--r-- | Source/Core/DiscIO/Src/Blob.cpp | 220 |
1 files changed, 110 insertions, 110 deletions
diff --git a/Source/Core/DiscIO/Src/Blob.cpp b/Source/Core/DiscIO/Src/Blob.cpp index f26c53ef90..c592c61c33 100644 --- a/Source/Core/DiscIO/Src/Blob.cpp +++ b/Source/Core/DiscIO/Src/Blob.cpp @@ -1,110 +1,110 @@ -// Copyright (C) 2003-2008 Dolphin Project.
-
-// 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, version 2.0.
-
-// 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 2.0 for more details.
-
-// A copy of the GPL 2.0 should have been included with the program.
-// If not, see http://www.gnu.org/licenses/
-
-// Official SVN repository and contact information can be found at
-// http://code.google.com/p/dolphin-emu/
-
-#include "Common.h"
-#include "FileUtil.h"
-#include "Blob.h"
-#include "CompressedBlob.h"
-#include "FileBlob.h"
-#include "DriveBlob.h"
-#include "MappedFile.h"
-
-namespace DiscIO
-{
-
-// Provides caching and split-operation-to-block-operations facilities.
-// Used for compressed blob reading and direct drive reading.
-
-void SectorReader::SetSectorSize(int blocksize)
-{
- for (int i = 0; i < CACHE_SIZE; i++)
- {
- cache[i] = new u8[blocksize];
- cache_tags[i] = (u64)(s64) - 1;
- }
- m_blocksize = blocksize;
-}
-
-SectorReader::~SectorReader() {
- for (int i = 0; i < CACHE_SIZE; i++)
- delete[] cache[i];
-}
-
-const u8 *SectorReader::GetBlockData(u64 block_num)
-{
- if (cache_tags[0] == block_num)
- {
- return cache[0];
- }
- else
- {
- GetBlock(block_num, cache[0]);
- cache_tags[0] = block_num;
- return cache[0];
- }
-}
-
-bool SectorReader::Read(u64 offset, u64 size, u8* out_ptr)
-{
- u64 startingBlock = offset / m_blocksize;
- u64 remain = size;
-
- int positionInBlock = (int)(offset % m_blocksize);
- u64 block = startingBlock;
-
- while (remain > 0)
- {
- const u8* data = GetBlockData(block);
- if (!data)
- return false;
-
- u32 toCopy = m_blocksize - positionInBlock;
- if (toCopy >= remain)
- {
- // yay, we are done!
- memcpy(out_ptr, data + positionInBlock, (size_t)remain);
- return true;
- }
- else
- {
- memcpy(out_ptr, data + positionInBlock, toCopy);
- out_ptr += toCopy;
- remain -= toCopy;
- positionInBlock = 0;
- block++;
- }
- }
- return true;
-}
-
-
-IBlobReader* CreateBlobReader(const char* filename)
-{
- //if (strlen(filename) < 4 && filename[1] == ':') // Drive, for sure.
- // return DriveReader::Create(filename);
-
- if (!File::Exists(filename))
- return 0;
-
- if (IsCompressedBlob(filename))
- return CompressedBlobReader::Create(filename);
-
- // Still here? Assume plain file.
- return PlainFileReader::Create(filename);
-}
-
-} // namespace
+// Copyright (C) 2003-2008 Dolphin Project. + +// 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, version 2.0. + +// 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 2.0 for more details. + +// A copy of the GPL 2.0 should have been included with the program. +// If not, see http://www.gnu.org/licenses/ + +// Official SVN repository and contact information can be found at +// http://code.google.com/p/dolphin-emu/ + +#include "Common.h" +#include "FileUtil.h" +#include "Blob.h" +#include "CompressedBlob.h" +#include "FileBlob.h" +#include "DriveBlob.h" +#include "MappedFile.h" + +namespace DiscIO +{ + +// Provides caching and split-operation-to-block-operations facilities. +// Used for compressed blob reading and direct drive reading. + +void SectorReader::SetSectorSize(int blocksize) +{ + for (int i = 0; i < CACHE_SIZE; i++) + { + cache[i] = new u8[blocksize]; + cache_tags[i] = (u64)(s64) - 1; + } + m_blocksize = blocksize; +} + +SectorReader::~SectorReader() { + for (int i = 0; i < CACHE_SIZE; i++) + delete[] cache[i]; +} + +const u8 *SectorReader::GetBlockData(u64 block_num) +{ + if (cache_tags[0] == block_num) + { + return cache[0]; + } + else + { + GetBlock(block_num, cache[0]); + cache_tags[0] = block_num; + return cache[0]; + } +} + +bool SectorReader::Read(u64 offset, u64 size, u8* out_ptr) +{ + u64 startingBlock = offset / m_blocksize; + u64 remain = size; + + int positionInBlock = (int)(offset % m_blocksize); + u64 block = startingBlock; + + while (remain > 0) + { + const u8* data = GetBlockData(block); + if (!data) + return false; + + u32 toCopy = m_blocksize - positionInBlock; + if (toCopy >= remain) + { + // yay, we are done! + memcpy(out_ptr, data + positionInBlock, (size_t)remain); + return true; + } + else + { + memcpy(out_ptr, data + positionInBlock, toCopy); + out_ptr += toCopy; + remain -= toCopy; + positionInBlock = 0; + block++; + } + } + return true; +} + + +IBlobReader* CreateBlobReader(const char* filename) +{ + //if (strlen(filename) < 4 && filename[1] == ':') // Drive, for sure. + // return DriveReader::Create(filename); + + if (!File::Exists(filename)) + return 0; + + if (IsCompressedBlob(filename)) + return CompressedBlobReader::Create(filename); + + // Still here? Assume plain file. + return PlainFileReader::Create(filename); +} + +} // namespace |
