/xbmc/cores/dvdplayer/DVDInputStreams/DVDInputStreamFile.cpp

  1/*
  2 *      Copyright (C) 2005-2013 Team XBMC
  3 *      http://xbmc.org
  4 *
  5 *  This Program is free software; you can redistribute it and/or modify
  6 *  it under the terms of the GNU General Public License as published by
  7 *  the Free Software Foundation; either version 2, or (at your option)
  8 *  any later version.
  9 *
 10 *  This Program is distributed in the hope that it will be useful,
 11 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 12 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 13 *  GNU General Public License for more details.
 14 *
 15 *  You should have received a copy of the GNU General Public License
 16 *  along with XBMC; see the file COPYING.  If not, see
 17 *  <http://www.gnu.org/licenses/>.
 18 *
 19 */
 20
 21#include "DVDInputStreamFile.h"
 22#include "filesystem/File.h"
 23#include "filesystem/IFile.h"
 24#include "settings/AdvancedSettings.h"
 25#include "utils/log.h"
 26#include "utils/URIUtils.h"
 27
 28using namespace XFILE;
 29
 30CDVDInputStreamFile::CDVDInputStreamFile() : CDVDInputStream(DVDSTREAM_TYPE_FILE)
 31{
 32  m_pFile = NULL;
 33  m_eof = true;
 34}
 35
 36CDVDInputStreamFile::~CDVDInputStreamFile()
 37{
 38  Close();
 39}
 40
 41bool CDVDInputStreamFile::IsEOF()
 42{
 43  return !m_pFile || m_eof;
 44}
 45
 46bool CDVDInputStreamFile::Open(const char* strFile, const std::string& content)
 47{
 48  if (!CDVDInputStream::Open(strFile, content))
 49    return false;
 50
 51  m_pFile = new CFile();
 52  if (!m_pFile)
 53    return false;
 54
 55  unsigned int flags = READ_TRUNCATED | READ_BITRATE | READ_CHUNKED;
 56
 57  if ( g_advancedSettings.m_alwaysForceBuffer && 
 58       !URIUtils::IsOnDVD(strFile) && 
 59       !URIUtils::IsBluray(strFile) )
 60    flags |= READ_CACHED; 
 61
 62
 63  if (content == "video/mp4" || content == "video/x-msvideo" || content == "video/avi")
 64    flags |= READ_MULTI_STREAM;
 65
 66  // open file in binary mode
 67  if (!m_pFile->Open(strFile, flags))
 68  {
 69    delete m_pFile;
 70    m_pFile = NULL;
 71    return false;
 72  }
 73
 74  if (m_pFile->GetImplemenation() && (content.empty() || content == "application/octet-stream"))
 75    m_content = m_pFile->GetImplemenation()->GetContent();
 76
 77  m_eof = true;
 78  return true;
 79}
 80
 81// close file and reset everyting
 82void CDVDInputStreamFile::Close()
 83{
 84  if (m_pFile)
 85  {
 86    m_pFile->Close();
 87    delete m_pFile;
 88  }
 89
 90  CDVDInputStream::Close();
 91  m_pFile = NULL;
 92  m_eof = true;
 93}
 94
 95int CDVDInputStreamFile::Read(uint8_t* buf, int buf_size)
 96{
 97  if(!m_pFile) return -1;
 98
 99  unsigned int ret = m_pFile->Read(buf, buf_size);
100
101  /* we currently don't support non completing reads */
102  if( ret == 0 ) m_eof = true;
103
104  return (int)(ret & 0xFFFFFFFF);
105}
106
107int64_t CDVDInputStreamFile::Seek(int64_t offset, int whence)
108{
109  if(!m_pFile) return -1;
110
111  if(whence == SEEK_POSSIBLE)
112    return m_pFile->IoControl(IOCTRL_SEEK_POSSIBLE, NULL);
113
114  int64_t ret = m_pFile->Seek(offset, whence);
115
116  /* if we succeed, we are not eof anymore */
117  if( ret >= 0 ) m_eof = false;
118
119  return ret;
120}
121
122int64_t CDVDInputStreamFile::GetLength()
123{
124  if (m_pFile)
125    return m_pFile->GetLength();
126  return 0;
127}
128
129bool CDVDInputStreamFile::GetCacheStatus(XFILE::SCacheStatus *status)
130{
131  if(m_pFile && m_pFile->IoControl(IOCTRL_CACHE_STATUS, status) >= 0)
132    return true;
133  else
134    return false;
135}
136
137BitstreamStats CDVDInputStreamFile::GetBitstreamStats() const
138{
139  if (!m_pFile)
140    return m_stats; // dummy return. defined in CDVDInputStream
141
142  if(m_pFile->GetBitstreamStats())
143    return *m_pFile->GetBitstreamStats();
144  else
145    return m_stats;
146}
147
148int CDVDInputStreamFile::GetBlockSize()
149{
150  if(m_pFile)
151    return m_pFile->GetChunkSize();
152  else
153    return 0;
154}
155
156void CDVDInputStreamFile::SetReadRate(unsigned rate)
157{
158  unsigned maxrate = rate + 1024 * 1024 / 8;
159  if(m_pFile->IoControl(IOCTRL_CACHE_SETRATE, &maxrate) >= 0)
160    CLog::Log(LOGDEBUG, "CDVDInputStreamFile::SetReadRate - set cache throttle rate to %u bytes per second", maxrate);
161}