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using System ;
using System.Text ;
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namespace AsterNET.FastAGI.Command
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{
/// <summary>
/// Plays the given file, allowing playback to be interrupted by the given
/// digits, if any, and allows the listner to control the stream.<br/>
/// If offset is provided then the audio will seek to sample offset before play
/// starts.<br/>
/// Returns 0 if playback completes without a digit being pressed, or the ASCII
/// numerical value of the digit if one was pressed, or -1 on error or if the
/// channel was disconnected. <br/>
/// Remember, the file extension must not be included in the filename.<br/>
/// Available since Asterisk 1.2
/// </summary>
public class ControlStreamFileCommand : AGICommand
{
/// <summary> The name of the file to stream.</summary>
private string file ;
/// <summary> When one of these digits is pressed while streaming the command returns.</summary>
private string escapeDigits ;
/// <summary> The offset samples to skip before streaming.</summary>
private int offset ;
private string forwardDigit ;
private string rewindDigit ;
private string pauseDigit ;
#region File
/// <summary>
/// Get/Set the name of the file to stream.
/// </summary>
public string File
{
get { return file ; }
set { this . file = value ; }
}
#endregion
#region EscapeDigits
/// <summary>
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/// Get/Set the digits that allow the user to interrupt this command or null for none.
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/// </summary>
public string EscapeDigits
{
get { return escapeDigits ; }
set { this . escapeDigits = value ; }
}
#endregion
#region Offset
/// <summary>
/// Get/Set the offset samples to skip before streaming.
/// </summary>
public int Offset
{
get { return offset ; }
set { this . offset = value ; }
}
#endregion
#region ForwardDigit
/// <summary>
/// Get the digit for fast forward.
/// </summary>
public string ForwardDigit
{
get { return forwardDigit ; }
}
#endregion
#region RewindDigit
/// <summary>
/// Get the digit for rewind.
/// </summary>
public string RewindDigit
{
get { return rewindDigit ; }
}
#endregion
#region PauseDigit
/// <summary>
/// Get the digit for pause and unpause.
/// </summary>
public string PauseDigit
{
get { return pauseDigit ; }
}
#endregion
#region ControlStreamFileCommand ( string file )
/// <summary>
/// Creates a new ControlStreamFileCommand, streaming from the beginning. It
/// uses the default digit "#" for forward and "*" for rewind and does not
/// support pausing.
/// </summary>
/// <param name="file">the name of the file to stream, must not include extension.</param>
public ControlStreamFileCommand ( string file )
{
this . file = file ;
this . escapeDigits = null ;
this . offset = - 1 ;
}
#endregion
#region ControlStreamFileCommand ( string file , string escapeDigits )
/// <summary>
/// Creates a new ControlStreamFileCommand, streaming from the beginning. It
/// uses the default digit "#" for forward and "*" for rewind and does not
/// support pausing.
/// </summary>
/// <param name="file">the name of the file to stream, must not include extension.</param>
/// <param name="escapeDigits">contains the digits that allow the user to interrupt this command.</param>
public ControlStreamFileCommand ( string file , string escapeDigits )
{
this . file = file ;
this . escapeDigits = escapeDigits ;
this . offset = - 1 ;
}
#endregion
#region ControlStreamFileCommand ( string file , string escapeDigits , int offset )
/// <summary>
/// Creates a new ControlStreamFileCommand, streaming from the given offset.
/// It uses the default digit "#" for forward and "*" for rewind and does not
/// support pausing.
/// </summary>
/// <param name="file">the name of the file to stream, must not include extension.</param>
/// <param name="escapeDigits">
/// contains the digits that allow the user to interrupt this command.
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/// Maybe null if you don't want the user to interrupt.
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/// </param>
/// <param name="offset">the offset samples to skip before streaming.</param>
public ControlStreamFileCommand ( string file , string escapeDigits , int offset )
{
this . file = file ;
this . escapeDigits = escapeDigits ;
this . offset = offset ;
}
#endregion
#region ControlStreamFileCommand ( string file , string escapeDigits , int offset , string forwardDigit , string rewindDigit , string pauseDigit )
/// <summary>
/// Creates a new ControlStreamFileCommand, streaming from the given offset.
/// It uses the default digit "#" for forward and "*" for rewind and does not
/// support pausing.
/// </summary>
/// <param name="file">the name of the file to stream, must not include extension.</param>
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/// <param name="escapeDigits">contains the digits that allow the user to interrupt this command. Maybe null if you don't want the user to interrupt.</param>
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/// <param name="offset">the offset samples to skip before streaming.</param>
/// <param name="forwardDigit">the digit for fast forward.</param>
/// <param name="rewindDigit">the digit for rewind.</param>
/// <param name="pauseDigit">the digit for pause and unpause.</param>
public ControlStreamFileCommand ( string file , string escapeDigits , int offset , string forwardDigit , string rewindDigit , string pauseDigit )
{
this . file = file ;
this . escapeDigits = escapeDigits ;
this . offset = offset ;
this . forwardDigit = forwardDigit ;
this . rewindDigit = rewindDigit ;
this . pauseDigit = pauseDigit ;
}
#endregion
#region ControlDigits ( string forwardDigit , string rewindDigit )
/// <summary>
/// Sets the control digits for fast forward and rewind.
/// </summary>
/// <param name="forwardDigit">the digit for fast forward.</param>
/// <param name="rewindDigit">the digit for rewind.</param>
public void ControlDigits ( string forwardDigit , string rewindDigit )
{
this . forwardDigit = forwardDigit ;
this . rewindDigit = rewindDigit ;
}
#endregion
#region ControlDigits ( string forwardDigit , string rewindDigit , string pauseDigit )
/// <summary>
/// Sets the control digits for fast forward, rewind and pause.
/// </summary>
/// <param name="forwardDigit">the digit for fast forward.</param>
/// <param name="rewindDigit">the digit for rewind.</param>
/// <param name="pauseDigit">the digit for pause and unpause.</param>
public void ControlDigits ( string forwardDigit , string rewindDigit , string pauseDigit )
{
this . forwardDigit = forwardDigit ;
this . rewindDigit = rewindDigit ;
this . pauseDigit = pauseDigit ;
}
#endregion
#region BuildCommand ( )
public override string BuildCommand ( )
{
StringBuilder sb = new StringBuilder ( "CONTROL STREAM FILE " ) ;
sb . Append ( EscapeAndQuote ( file ) + " " + EscapeAndQuote ( escapeDigits ) ) ;
if ( offset > = 0 )
sb . Append ( " " + offset . ToString ( ) ) ;
else if ( forwardDigit ! = null | | rewindDigit ! = null | | pauseDigit ! = null )
sb . Append ( " 0" ) ;
if ( forwardDigit ! = null | | rewindDigit ! = null | | pauseDigit ! = null )
sb . Append ( " " + forwardDigit ) ;
if ( rewindDigit ! = null | | pauseDigit ! = null )
sb . Append ( " " + rewindDigit ) ;
if ( pauseDigit ! = null )
sb . Append ( " " + pauseDigit ) ;
return sb . ToString ( ) ;
}
#endregion
}
}