liveMedia/include/InputFile.hh File Reference

#include <UsageEnvironment.hh>
#include <stdio.h>
#include <sys/stat.h>

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Functions
FILE *	OpenInputFile (UsageEnvironment &env, char const *fileName)
void	CloseInputFile (FILE *fid)
u_int64_t	GetFileSize (char const *fileName, FILE *fid)
int64_t	SeekFile64 (FILE *fid, int64_t offset, int whence)
int64_t	TellFile64 (FILE *fid)
Boolean	FileIsSeekable (FILE *fid)

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Function Documentation

void CloseInputFile

(

FILE *

fid

)

Definition at line 43 of file InputFile.cpp.

References NULL.

Referenced by MPEG2TransportStreamIndexFile::closeFid(), AMRAudioFileSource::createNew(), ADTSAudioFileSource::createNew(), ADTSAudioFileSource::~ADTSAudioFileSource(), AMRAudioFileSource::~AMRAudioFileSource(), ByteStreamFileSource::~ByteStreamFileSource(), MP3StreamState::~MP3StreamState(), and WAVAudioFileSource::~WAVAudioFileSource().

                               {
  // Don't close 'stdin', in case we want to use it again later.
  if (fid != NULL && fid != stdin) fclose(fid);
}

Boolean FileIsSeekable

(

FILE *

fid

)

Definition at line 105 of file InputFile.cpp.

References False, SeekFile64(), and True.

Referenced by ByteStreamFileSource::ByteStreamFileSource(), and WAVAudioFileSource::WAVAudioFileSource().

                                  {
  if (SeekFile64(fid, 1, SEEK_CUR) < 0) {
    return False;
  }

  SeekFile64(fid, -1, SEEK_CUR); // seek back to where we were
  return True;
}

u_int64_t GetFileSize	(	char const *	fileName,
		FILE *	fid
	)

Definition at line 48 of file InputFile.cpp.

References NULL, SeekFile64(), and TellFile64().

Referenced by WAVAudioFileSource::createNew(), MP3FileSource::createNew(), ByteStreamFileSource::createNew(), and MPEG2TransportStreamIndexFile::MPEG2TransportStreamIndexFile().

                                                       {
  u_int64_t fileSize = 0; // by default

  if (fid != stdin) {
#if !defined(_WIN32_WCE)
    if (fileName == NULL) {
#endif
      if (fid != NULL && SeekFile64(fid, 0, SEEK_END) >= 0) {
        fileSize = (u_int64_t)TellFile64(fid);
        if (fileSize == (u_int64_t)-1) fileSize = 0; // TellFile64() failed
        SeekFile64(fid, 0, SEEK_SET);
      }
#if !defined(_WIN32_WCE)
    } else {
      struct stat sb;
      if (stat(fileName, &sb) == 0) {
        fileSize = sb.st_size;
      }
    }
#endif
  }

  return fileSize;
}

FILE* OpenInputFile	(	UsageEnvironment &	env,
		char const *	fileName
	)

Definition at line 24 of file InputFile.cpp.

References env, NULL, and UsageEnvironment::setResultMsg().

Referenced by WAVAudioFileSource::createNew(), MP3FileSource::createNew(), ByteStreamFileSource::createNew(), AMRAudioFileSource::createNew(), ADTSAudioFileSource::createNew(), and MPEG2TransportStreamIndexFile::openFid().

                                                                 {
  FILE* fid;

  // Check for a special case file name: "stdin"
  if (strcmp(fileName, "stdin") == 0) {
    fid = stdin;
#if (defined(__WIN32__) || defined(_WIN32)) && !defined(_WIN32_WCE)
    _setmode(_fileno(stdin), _O_BINARY); // convert to binary mode
#endif
  } else {
    fid = fopen(fileName, "rb");
    if (fid == NULL) {
      env.setResultMsg("unable to open file \"",fileName, "\"");
    }
  }

  return fid;
}

int64_t SeekFile64	(	FILE *	fid,
		int64_t	offset,
		int	whence
	)

Definition at line 73 of file InputFile.cpp.

References NULL.

Referenced by ADTSAudioFileSource::createNew(), ADTSAudioFileSource::doGetNextFrame(), WAVAudioFileSource::doReadFromFile(), FileIsSeekable(), GetFileSize(), ByteStreamFileSource::seekToByteAbsolute(), ByteStreamFileSource::seekToByteRelative(), ByteStreamFileSource::seekToEnd(), MPEG2TransportStreamIndexFile::seekToIndexRecord(), WAVAudioFileSource::seekToPCMByte(), MP3StreamState::seekWithinFile(), WAVAudioFileSource::setScaleFactor(), QuickTimeFileSink::setWord(), AVIFileSink::setWord(), and QuickTimeFileSink::setWord64().

                                                          {
  if (fid == NULL) return -1;

  clearerr(fid);
  fflush(fid);
#if (defined(__WIN32__) || defined(_WIN32)) && !defined(_WIN32_WCE)
  return _lseeki64(_fileno(fid), offset, whence) == (int64_t)-1 ? -1 : 0;
#else
#if defined(_WIN32_WCE)
  return fseek(fid, (long)(offset), whence);
#else
  return fseeko(fid, (off_t)(offset), whence);
#endif
#endif
}

int64_t TellFile64

(

FILE *

fid

)

Definition at line 89 of file InputFile.cpp.

References NULL.

Referenced by QuickTimeFileSink::addAtom_hdlr2(), QuickTimeFileSink::completeOutputFile(), GetFileSize(), QuickTimeFileSink::QuickTimeFileSink(), WAVAudioFileSource::setScaleFactor(), SubsessionIOState::useFrame(), SubsessionIOState::useFrameForHinting(), and WAVAudioFileSource::WAVAudioFileSource().

                              {
  if (fid == NULL) return -1;

  clearerr(fid);
  fflush(fid);
#if (defined(__WIN32__) || defined(_WIN32)) && !defined(_WIN32_WCE)
  return _telli64(_fileno(fid));
#else
#if defined(_WIN32_WCE)
  return ftell(fid);
#else
  return ftello(fid);
#endif
#endif
}

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