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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 "DVDInputStreamStack.h"
#include "FileItem.h"
#include "FileItemList.h"
#include "filesystem/File.h"
#include "filesystem/StackDirectory.h"
#include "utils/log.h"
#include <limits.h>
using namespace XFILE;
CDVDInputStreamStack::CDVDInputStreamStack(const CFileItem& fileitem) : CDVDInputStream(DVDSTREAM_TYPE_FILE, fileitem)
{
m_eof = true;
m_pos = 0;
m_length = 0;
}
CDVDInputStreamStack::~CDVDInputStreamStack()
{
Close();
}
bool CDVDInputStreamStack::IsEOF()
{
return m_eof;
}
bool CDVDInputStreamStack::Open()
{
if (!CDVDInputStream::Open())
return false;
CStackDirectory dir;
CFileItemList items;
const CURL pathToUrl(m_item.GetDynPath());
if(!dir.GetDirectory(pathToUrl, items))
{
CLog::Log(LOGERROR, "CDVDInputStreamStack::Open - failed to get list of stacked items");
return false;
}
m_length = 0;
m_eof = false;
for(int index = 0; index < items.Size(); index++)
{
TFile file(new CFile());
if (!file->Open(items[index]->GetDynPath(), READ_TRUNCATED))
{
CLog::Log(LOGERROR, "CDVDInputStreamStack::Open - failed to open stack part '{}' - skipping",
items[index]->GetDynPath());
continue;
}
TSeg segment;
segment.file = file;
segment.length = file->GetLength();
if(segment.length <= 0)
{
CLog::Log(LOGERROR,
"CDVDInputStreamStack::Open - failed to get file length for '{}' - skipping",
items[index]->GetDynPath());
continue;
}
m_length += segment.length;
m_files.push_back(segment);
}
if(m_files.empty())
return false;
m_file = m_files[0].file;
m_eof = false;
return true;
}
// close file and reset everything
void CDVDInputStreamStack::Close()
{
CDVDInputStream::Close();
m_files.clear();
m_file.reset();
m_eof = true;
}
int CDVDInputStreamStack::Read(uint8_t* buf, int buf_size)
{
if(m_file == NULL || m_eof)
return 0;
unsigned int ret = m_file->Read(buf, buf_size);
if(ret > INT_MAX)
return -1;
if(ret == 0)
{
m_eof = true;
if(Seek(m_pos, SEEK_SET) < 0)
{
CLog::Log(LOGERROR, "CDVDInputStreamStack::Read - failed to seek into next file");
m_eof = true;
m_file.reset();
return -1;
}
}
m_pos += ret;
return (int)ret;
}
int64_t CDVDInputStreamStack::Seek(int64_t offset, int whence)
{
int64_t pos, len;
if (whence == SEEK_SET)
pos = offset;
else if(whence == SEEK_CUR)
pos = offset + m_pos;
else if(whence == SEEK_END)
pos = offset + m_length;
else
return -1;
len = 0;
for(TSegVec::iterator it = m_files.begin(); it != m_files.end(); ++it)
{
if(len + it->length > pos)
{
TFile file = it->file;
int64_t file_pos = pos - len;
if(file->GetPosition() != file_pos)
{
if(file->Seek(file_pos, SEEK_SET) < 0)
return false;
}
m_file = file;
m_pos = pos;
m_eof = false;
return pos;
}
len += it->length;
}
return -1;
}
int64_t CDVDInputStreamStack::GetLength()
{
return m_length;
}
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