Sophie: php-manual-pt_BR-5.2.4-1mdv2008.1 noarch

php-manual-pt_BR-5.2.4-1mdv2008.1.noarch.rpm

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><H1
CLASS="section"
><A
NAME="wrappers.audio"
>Audio Streams</A
></H1
><P
><TT
CLASS="filename"
>ogg://</TT
> PHP 4.3.0 and up (PECL) </P
><P
></P
><UL
><LI
><P
><TT
CLASS="filename"
>ogg://soundfile.ogg</TT
></P
></LI
><LI
><P
><TT
CLASS="filename"
>ogg:///path/to/soundfile.ogg</TT
></P
></LI
><LI
><P
><TT
CLASS="filename"
>ogg://http://www.example.com/path/to/soundstream.ogg</TT
></P
></LI
></UL
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>This wrapper is not enabled by default: </B
>
    In order to use the <TT
CLASS="filename"
>ogg://</TT
> wrapper you must install
    the <A
HREF="http://pecl.php.net/package/oggvorbis"
TARGET="_top"
>OGG/Vorbis</A
> extension
    available from <A
HREF="http://pecl.php.net"
TARGET="_top"
>PECL</A
>.
   </P
></BLOCKQUOTE
></DIV
><P
>&#13;   Files opened for reading via the <TT
CLASS="filename"
>ogg://</TT
> wrapper
   are treated as compressed audio encoded using the OGG/Vorbis codec.
   Similarly, files opened for writing or appending via the 
   <TT
CLASS="filename"
>ogg://</TT
> wrapper are writen as compressed audio data.
   <A
HREF="function.stream-get-meta-data.html"
><B
CLASS="function"
>stream_get_meta_data()</B
></A
>, when used on an OGG/Vorbis
   file opened for reading will return various details about the stream
   including the <CODE
CLASS="parameter"
>vendor</CODE
> tag, any included
   <CODE
CLASS="parameter"
>comments</CODE
>, the number of 
   <CODE
CLASS="parameter"
>channels</CODE
>, the sampling <CODE
CLASS="parameter"
>rate</CODE
>, 
   and the encoding rate range described by: 
   <CODE
CLASS="parameter"
>bitrate_lower</CODE
>, <CODE
CLASS="parameter"
>bitrate_upper</CODE
>,
   <CODE
CLASS="parameter"
>bitrate_nominal</CODE
>, and <CODE
CLASS="parameter"
>bitrate_window</CODE
>.
  </P
><P
>&#13;   <DIV
CLASS="table"
><A
NAME="AEN289143"
></A
><P
><B
>Tabela N-11. Wrapper Summary</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><THEAD
><TR
><TH
>Attribute</TH
><TH
>Supported</TH
></TR
></THEAD
><TBODY
><TR
><TD
>Restricted by <A
HREF="ref.filesystem.html#ini.allow-url-fopen"
>allow_url_fopen</A
></TD
><TD
>No</TD
></TR
><TR
><TD
>Allows Reading</TD
><TD
>Yes</TD
></TR
><TR
><TD
>Allows Writing</TD
><TD
>Yes</TD
></TR
><TR
><TD
>Allows Appending</TD
><TD
>Yes</TD
></TR
><TR
><TD
>Allows Simultaneous Reading and Writing</TD
><TD
>No</TD
></TR
><TR
><TD
>Supports <A
HREF="function.stat.html"
><B
CLASS="function"
>stat()</B
></A
></TD
><TD
>No</TD
></TR
><TR
><TD
>Supports <A
HREF="function.unlink.html"
><B
CLASS="function"
>unlink()</B
></A
></TD
><TD
>No</TD
></TR
><TR
><TD
>Supports <A
HREF="function.rename.html"
><B
CLASS="function"
>rename()</B
></A
></TD
><TD
>No</TD
></TR
><TR
><TD
>Supports <A
HREF="function.mkdir.html"
><B
CLASS="function"
>mkdir()</B
></A
></TD
><TD
>No</TD
></TR
><TR
><TD
>Supports <A
HREF="function.rmdir.html"
><B
CLASS="function"
>rmdir()</B
></A
></TD
><TD
>No</TD
></TR
></TBODY
></TABLE
></DIV
>
  </P
><P
>&#13;   <DIV
CLASS="table"
><A
NAME="AEN289188"
></A
><P
><B
>Tabela N-12. Context options</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><THEAD
><TR
><TH
>Name</TH
><TH
>Usage</TH
><TH
>Default</TH
><TH
>Mode</TH
></TR
></THEAD
><TBODY
><TR
><TD
><TT
CLASS="literal"
>pcm_mode</TT
></TD
><TD
>&#13;        PCM encoding to apply while reading, one of:
        <TT
CLASS="constant"
><B
>OGGVORBIS_PCM_U8</B
></TT
>, <TT
CLASS="constant"
><B
>OGGVORBIS_PCM_S8</B
></TT
>,
        <TT
CLASS="constant"
><B
>OGGVORBIS_PCM_U16_BE</B
></TT
>, <TT
CLASS="constant"
><B
>OGGVORBIS_PCM_S16_BE</B
></TT
>,
        <TT
CLASS="constant"
><B
>OGGVORBIS_PCM_U16_LE</B
></TT
>, and <TT
CLASS="constant"
><B
>OGGVORBIS_PCM_S16_LE</B
></TT
>.
        (8 vs 16 bit, signed or unsigned, big or little endian)
       </TD
><TD
>OGGVORBIS_PCM_S16_LE</TD
><TD
>Read</TD
></TR
><TR
><TD
><TT
CLASS="literal"
>rate</TT
></TD
><TD
>&#13;        Sampling rate of input data, expressed in Hz
       </TD
><TD
>44100</TD
><TD
>Write/Append</TD
></TR
><TR
><TD
><TT
CLASS="literal"
>bitrate</TT
></TD
><TD
>&#13;        When given as an integer, the fixed bitrate at which to encode. (16000 to 131072)
        When given as a float, the variable bitrate quality to use. (-1.0 to 1.0)
       </TD
><TD
>128000</TD
><TD
>Write/Append</TD
></TR
><TR
><TD
><TT
CLASS="literal"
>channels</TT
></TD
><TD
>&#13;        The number of audio channels to encode, typically 1 (Mono), or 2 (Stero).
        May range as high as 16.
       </TD
><TD
>2</TD
><TD
>Write/Append</TD
></TR
><TR
><TD
><TT
CLASS="literal"
>comments</TT
></TD
><TD
>&#13;        An array of string values to encode into the track header.
       </TD
><TD
>&nbsp;</TD
><TD
>Write/Append</TD
></TR
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>
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