MediaWare Solutions MPEG SDK

An info class for storing header information about an MPEG file.

It contains the information that can be read from the MPEG system headers without much interogation of the stream. Therefore reading this information is much faster then reading the complete MpegInfo information.

An MpegHeaderInfo object can be obtained using the static MpegDecoder::getMpegHeaderInfo() function.

Author:

Kevin W. Moore

Source:

MpegHeaderInfo.h:43

See Also:

MpegDecoder, MpegInfo

public MpegHeaderInfo ( const string & pathname ) ;

Construct an MpegHeaderInfo object for the given mpeg file.

public MpegHeaderInfo ( const string & pathname ,
                        fpos_t file_size ,
                        SystemsFormat system_format ,
                        int mux_rate ,
                        VideoFormat video_format ,
                        int width ,
                        int height ,
                        float frame_rate ,
                        int video_bit_rate ,
                        ChromaFormat chroma_format ,
                        AudioFormat audio_format ,
                        int num_audio_channels ,
                        AudioMode audio_mode ,
                        int audio_bit_rate ,
                        int audio_sampling_freq ) ;

Construct an MpegHeaderInfo object for the given mpeg file.

protected string _pathname

protected fpos_t _file_size

protected SystemsFormat _system_format

protected int _mux_rate

protected VideoFormat _video_format

protected int _width

protected int _height

protected int _aspect_ratio_info

protected float _frame_rate

protected int _video_bit_rate

protected ChromaFormat _chroma_format

protected AudioFormat _audio_format

protected int _num_audio_channels

protected AudioMode _audio_mode

protected int _audio_bit_rate

protected int _audio_sampling_freq

public void setFilename ( const string & filename ) ;

Set the pathname of the MPEG file.

public const string & getFilename ( ) const ;

Get the complete pathname of the MPEG file.

public void setFileSize ( fpos_t file_size ) ;

Set the file size attribute.

public fpos_t getFileSize ( ) const ;

Get the size of the MPEG file.

public void setSystemFormat ( SystemsFormat system_format ) ;

Set the System format.

public SystemsFormat getSystemFormat ( ) const ;

Get the system format.

public void setMuxRate ( int mux_rate ) ;

Set the Multiplexed rate.

public int getMuxRate ( ) const ;

Get the Multiplexed rate.

public void setVideoFormat ( VideoFormat video_format ) ;

Set the video format.

public VideoFormat getVideoFormat ( ) const ;

Get the video format.

public void setWidth ( int width ) ;

Set the width of the video frames.

public int getWidth ( ) const ;

Get the width of the video frames.

public void setHeight ( int height ) ;

Set the Height of the video frames.

public int getHeight ( ) const ;

Get the Height of the video frames.

public void setFrameRate ( float frame_rate ) ;

Set the video frame rate.

public void setAspectRatioInfo ( int asp ) ;

Set aspect ratio info.

public int getAspectRatioInfo ( ) const ;

Get aspect ratio info.

public float getFrameRate ( ) const ;

Get the video frame rate.

public void setVideoBitRate ( int video_bit_rate ) ;

Set the video bit rate.

public int getVideoBitRate ( ) const ;

Get the video bit rate.

public void setChromaFormat ( ChromaFormat chroma_format ) ;

Set the chroma format.

public ChromaFormat getChromaFormat ( ) const ;

Get the chroma format.

public void setAudioFormat ( AudioFormat audio_format ) ;

Set the audio format.

public AudioFormat getAudioFormat ( ) const ;

Get the audio format.

public void setNumAudioChannels ( int nch ) ;

Set the number of audio channels.

public int getNumAudioChannels ( ) const ;

Get the number of audio channels.

public void setAudioMode ( AudioMode audio_mode ) ;

Set the audio mode.

public AudioMode getAudioMode ( ) const ;

Get the audio mode.

public void setAudioBitRate ( int br ) ;

Set the audio bit rate.

public int getAudioBitRate ( ) const ;

Get the audio bit rate.

public void setAudioSamplingFreq ( int sf ) ;

Set the audio sampling frequency.

public int getAudioSamplingFreq ( ) const ;

Get the audio sampling frequency.

public bool operator == ( const MpegHeaderInfo & info ) const ;

Whether the MpegHeaderInfo structure equals this one.

It tests for complete equality between all of its structures.

public MpegHeaderInfo & operator = ( const MpegHeaderInfo & x ) ;

Assignment operator

public string tostring ( ) const ;

Return a string representation of the information contained in the MpegHeaderInfo object.