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DVDInputStreamFile.cpp
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DVDInputStreamFile.cpp
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/*
* Copyright (C) 2005-2012 Team XBMC
* http://www.xbmc.org
*
* 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, 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 XBMC; see the file COPYING. If not, see
* <http://www.gnu.org/licenses/>.
*
*/
#include "DVDInputStreamFile.h"
#include "filesystem/File.h"
#include "filesystem/IFile.h"
#include "utils/log.h"
#include "utils/URIUtils.h"
#include "settings/AdvancedSettings.h"
using namespace XFILE;
CDVDInputStreamFile::CDVDInputStreamFile() : CDVDInputStream(DVDSTREAM_TYPE_FILE)
{
m_pFile = NULL;
m_eof = true;
}
CDVDInputStreamFile::~CDVDInputStreamFile()
{
Close();
}
bool CDVDInputStreamFile::IsEOF()
{
return !m_pFile || m_eof;
}
bool CDVDInputStreamFile::Open(const char* strFile, const std::string& content)
{
if (!CDVDInputStream::Open(strFile, content))
return false;
m_pFile = new CFile();
if (!m_pFile)
return false;
unsigned int flags = READ_TRUNCATED | READ_BITRATE | READ_CHUNKED;
if (!URIUtils::IsOnDVD(strFile) && !URIUtils::IsBluray(strFile) && g_advancedSettings.m_alwaysForceBuffer)
flags |= READ_CACHED;
// open file in binary mode
if (!m_pFile->Open(strFile, flags))
{
delete m_pFile;
m_pFile = NULL;
return false;
}
if (m_pFile->GetImplemenation() && (content.empty() || content == "application/octet-stream"))
m_content = m_pFile->GetImplemenation()->GetContent();
m_eof = true;
return true;
}
// close file and reset everyting
void CDVDInputStreamFile::Close()
{
if (m_pFile)
{
m_pFile->Close();
delete m_pFile;
}
CDVDInputStream::Close();
m_pFile = NULL;
m_eof = true;
}
int CDVDInputStreamFile::Read(BYTE* buf, int buf_size)
{
if(!m_pFile) return -1;
unsigned int ret = m_pFile->Read(buf, buf_size);
/* we currently don't support non completing reads */
if( ret <= 0 ) m_eof = true;
return (int)(ret & 0xFFFFFFFF);
}
int64_t CDVDInputStreamFile::Seek(int64_t offset, int whence)
{
if(!m_pFile) return -1;
if(whence == SEEK_POSSIBLE)
return m_pFile->IoControl(IOCTRL_SEEK_POSSIBLE, NULL);
int64_t ret = m_pFile->Seek(offset, whence);
/* if we succeed, we are not eof anymore */
if( ret >= 0 ) m_eof = false;
return ret;
}
int64_t CDVDInputStreamFile::GetLength()
{
if (m_pFile)
return m_pFile->GetLength();
return 0;
}
bool CDVDInputStreamFile::GetCacheStatus(XFILE::SCacheStatus *status)
{
if(m_pFile && m_pFile->IoControl(IOCTRL_CACHE_STATUS, status) >= 0)
return true;
else
return false;
}
BitstreamStats CDVDInputStreamFile::GetBitstreamStats() const
{
if (!m_pFile)
return m_stats; // dummy return. defined in CDVDInputStream
if(m_pFile->GetBitstreamStats())
return *m_pFile->GetBitstreamStats();
else
return m_stats;
}
int CDVDInputStreamFile::GetBlockSize()
{
if(m_pFile)
return m_pFile->GetChunkSize();
else
return 0;
}
void CDVDInputStreamFile::SetReadRate(unsigned rate)
{
unsigned maxrate = rate + 1024 * 1024 / 8;
CLog::Log(LOGDEBUG, "CDVDInputStreamFile::SetReadRate - Read rate set to %u bytes per second", maxrate);
if(m_pFile->IoControl(IOCTRL_CACHE_SETRATE, &maxrate) >= 0)
CLog::Log(LOGDEBUG, "CDVDInputStreamFile::SetReadRate - set cache throttle rate to %u bytes per second", maxrate);
}