\doxysection{Writing by force feeding Oggz}
\label{group__force__feed}\index{Writing by force feeding Oggz@{Writing by force feeding Oggz}}


Force feeding involves synchronously\+:  


Force feeding involves synchronously\+: 


\begin{DoxyItemize}
\item Creating an {\itshape ogg\+\_\+packet} structure
\item Adding it to the packet queue with \doxyref{oggz\+\_\+write\+\_\+feed()}{p.}{group__write__api_ga6ccaceb107db1fd2eae047dbdbaa5889}
\item Calling \doxyref{oggz\+\_\+write()}{p.}{group__write__api_ga3c97d94ea425d64546adf9c368b71904} or \doxyref{oggz\+\_\+write\+\_\+output()}{p.}{group__write__api_ga5606dff01964caec4582eb172fde0c1c}, repeatedly as necessary, to generate the Ogg bitstream.
\end{DoxyItemize}

This process is illustrated in the following diagram\+:

 
\begin{DoxyImage}
\includegraphics[width=10cm]{forcefeed}
\doxyfigcaption{Force Feeding Oggz}
\end{DoxyImage}


The following example code generates a stream of ten packets, each containing a single byte (\textquotesingle{}A\textquotesingle{}, \textquotesingle{}B\textquotesingle{}, ... , \textquotesingle{}J\textquotesingle{})\+:


\begin{DoxyCodeInclude}{0}
\DoxyCodeLine{}
\DoxyCodeLine{\textcolor{preprocessor}{\#include <stdlib.h>} \textcolor{comment}{/* exit */}}
\DoxyCodeLine{\textcolor{preprocessor}{\#include "oggz/oggz.h"}}
\DoxyCodeLine{}
\DoxyCodeLine{\textcolor{keyword}{static} \textcolor{keywordtype}{long} serialno;}
\DoxyCodeLine{\textcolor{keyword}{static} ogg\_int64\_t granulepos = 0;}
\DoxyCodeLine{\textcolor{keyword}{static} ogg\_int64\_t packetno = 0;}
\DoxyCodeLine{}
\DoxyCodeLine{\textcolor{keywordtype}{int}}
\DoxyCodeLine{main (\textcolor{keywordtype}{int} argc, \textcolor{keywordtype}{char} * argv[])}
\DoxyCodeLine{\{}
\DoxyCodeLine{  \textcolor{keywordtype}{char} * progname, * filename = NULL;}
\DoxyCodeLine{  OGGZ * oggz;}
\DoxyCodeLine{  ogg\_packet op;}
\DoxyCodeLine{  \textcolor{keywordtype}{unsigned} \textcolor{keywordtype}{char} buf[1];}
\DoxyCodeLine{  \textcolor{keywordtype}{long} n;}
\DoxyCodeLine{}
\DoxyCodeLine{  progname = argv[0];}
\DoxyCodeLine{  \textcolor{keywordflow}{if} (argc > 1) filename = argv[1];}
\DoxyCodeLine{}
\DoxyCodeLine{  \textcolor{keywordflow}{if} (filename) \{}
\DoxyCodeLine{    oggz = oggz\_open (filename, OGGZ\_WRITE);}
\DoxyCodeLine{  \} \textcolor{keywordflow}{else} \{}
\DoxyCodeLine{    oggz = oggz\_open\_stdio (stdout, OGGZ\_WRITE);}
\DoxyCodeLine{  \}}
\DoxyCodeLine{}
\DoxyCodeLine{  \textcolor{keywordflow}{if} (oggz == NULL) \{}
\DoxyCodeLine{    fprintf (stderr, \textcolor{stringliteral}{"\%s: Error creating oggz\(\backslash\)n"}, progname);}
\DoxyCodeLine{    exit (1);}
\DoxyCodeLine{  \}}
\DoxyCodeLine{}
\DoxyCodeLine{  serialno = oggz\_serialno\_new (oggz);}
\DoxyCodeLine{}
\DoxyCodeLine{  \textcolor{keywordflow}{for} (packetno = 0; packetno < 10; packetno++) \{}
\DoxyCodeLine{}
\DoxyCodeLine{    \textcolor{comment}{/* Create a packet */}}
\DoxyCodeLine{}
\DoxyCodeLine{    buf[0] = \textcolor{charliteral}{'A'} + (int)packetno;}
\DoxyCodeLine{}
\DoxyCodeLine{    op.packet = buf;}
\DoxyCodeLine{    op.bytes = 1;}
\DoxyCodeLine{    op.granulepos = granulepos;}
\DoxyCodeLine{    op.packetno = packetno;}
\DoxyCodeLine{    }
\DoxyCodeLine{    \textcolor{keywordflow}{if} (packetno == 0) op.b\_o\_s = 1;}
\DoxyCodeLine{    \textcolor{keywordflow}{else} op.b\_o\_s = 0;}
\DoxyCodeLine{    }
\DoxyCodeLine{    \textcolor{keywordflow}{if} (packetno == 9) op.e\_o\_s = 1;}
\DoxyCodeLine{    \textcolor{keywordflow}{else} op.e\_o\_s = 0;}
\DoxyCodeLine{    }
\DoxyCodeLine{    \textcolor{comment}{/* Feed it to the Oggz packet queue */}}
\DoxyCodeLine{}
\DoxyCodeLine{    oggz\_write\_feed (oggz, \&op, serialno, OGGZ\_FLUSH\_AFTER, NULL);}
\DoxyCodeLine{    }
\DoxyCodeLine{    granulepos += 100;}
\DoxyCodeLine{}
\DoxyCodeLine{    \textcolor{comment}{/* Write bytes from packetized bitstream to the output file */}}
\DoxyCodeLine{}
\DoxyCodeLine{    \textcolor{keywordflow}{while} ((n = oggz\_write (oggz, 32)) > 0);}
\DoxyCodeLine{  \}}
\DoxyCodeLine{}
\DoxyCodeLine{  oggz\_close (oggz);}
\DoxyCodeLine{}
\DoxyCodeLine{  exit (0);}
\DoxyCodeLine{\}}
\end{DoxyCodeInclude}
 