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/*
* Copyright (C) 2005-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#include "UDFBlockInput.h"
#include "filesystem/File.h"
#include <mutex>
#include <udfread/udfread.h>
int CUDFBlockInput::Close(udfread_block_input* bi)
{
auto m_bi = reinterpret_cast<UDF_BI*>(bi);
m_bi->fp->Close();
return 0;
}
uint32_t CUDFBlockInput::Size(udfread_block_input* bi)
{
auto m_bi = reinterpret_cast<UDF_BI*>(bi);
return static_cast<uint32_t>(m_bi->fp->GetLength() / UDF_BLOCK_SIZE);
}
int CUDFBlockInput::Read(
udfread_block_input* bi, uint32_t lba, void* buf, uint32_t blocks, int flags)
{
auto m_bi = reinterpret_cast<UDF_BI*>(bi);
std::unique_lock<CCriticalSection> lock(m_bi->lock);
int64_t pos = static_cast<int64_t>(lba) * UDF_BLOCK_SIZE;
if (m_bi->fp->Seek(pos, SEEK_SET) != pos)
return -1;
ssize_t size = blocks * UDF_BLOCK_SIZE;
ssize_t read = m_bi->fp->Read(buf, size);
if (read > 0)
return static_cast<int>(read / UDF_BLOCK_SIZE);
return static_cast<int>(read);
}
udfread_block_input* CUDFBlockInput::GetBlockInput(const std::string& file)
{
auto fp = std::make_shared<XFILE::CFile>();
if (fp->Open(file))
{
m_bi = std::make_unique<UDF_BI>();
if (m_bi)
{
m_bi->fp = fp;
m_bi->bi.close = CUDFBlockInput::Close;
m_bi->bi.read = CUDFBlockInput::Read;
m_bi->bi.size = CUDFBlockInput::Size;
return &m_bi->bi;
}
fp->Close();
}
return nullptr;
}
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