text: /*
   *      Copyright (C) 2005-2013 Team XBMC
   *      http://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 "settings/AdvancedSettings.h"
  #include "utils/log.h"
  #include "utils/URIUtils.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, bool contentLookup)
  {
    if (!CDVDInputStream::Open(strFile, content, contentLookup))
      return false;
  
    m_pFile = new CFile();
    if (!m_pFile)
      return false;
  
    unsigned int flags = READ_TRUNCATED | READ_BITRATE | READ_CHUNKED;
    
    // If this file is audio and/or video (= not a subtitle) flag to caller
    if (!CFileItem(strFile).IsSubtitle())
      flags |= READ_AUDIO_VIDEO;
  
    /*
     * There are 4 buffer modes available (configurable in as.xml)
     * 0) Buffer all internet filesystems (like 2 but additionally also ftp, webdav, etc.) (default)
     * 1) Buffer all filesystems (including local)
     * 2) Only buffer true internet filesystems (streams) (http, etc.)
     * 3) No buffer
     */
    if (!URIUtils::IsOnDVD(strFile) && !URIUtils::IsBluray(strFile)) // Never cache these
    {
      if (g_advancedSettings.m_networkBufferMode == 0 || g_advancedSettings.m_networkBufferMode == 2)
      {
        if (URIUtils::IsInternetStream(CURL(strFile), (g_advancedSettings.m_networkBufferMode == 0) ) )
          flags |= READ_CACHED;
      }
      else if (g_advancedSettings.m_networkBufferMode == 1)
      {
        flags |= READ_CACHED; // In buffer mode 1 force cache for (almost) all files
      }
    }
  
    if (!(flags & READ_CACHED))
      flags |= READ_NO_CACHE; // Make sure CFile honors our no-cache hint
  
    if (content == "video/mp4" ||
        content == "video/x-msvideo" ||
        content == "video/avi" ||
        content == "video/x-matroska" ||
        content == "video/x-matroska-3d")
      flags |= READ_MULTI_STREAM;
  
    // 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 = false;
    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(uint8_t* buf, int buf_size)
  {
    if(!m_pFile) return -1;
  
    ssize_t ret = m_pFile->Read(buf, buf_size);
  
    if (ret < 0)
      return -1; // player will retry read in case of error until playback is stopped
  
    /* we currently don't support non completing reads */
    if (ret == 0) 
      m_eof = true;
  
    return (int)ret;
  }
  
  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;
    if(m_pFile->IoControl(IOCTRL_CACHE_SETRATE, &maxrate) >= 0)
      CLog::Log(LOGDEBUG, "CDVDInputStreamFile::SetReadRate - set cache throttle rate to %u bytes per second", maxrate);
  }
  