ugfx/src/gfile/fatfs/doc/ja/forward.html

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<title>FatFs - f_forward</title>
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<div class="para func">
<h2>f_forward</h2>
<p><EFBFBD>t<EFBFBD>@<40>C<EFBFBD><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>f<EFBFBD>[<5B>^<5E><><EFBFBD>ǂݏo<DD8F><6F><EFBFBD>A<EFBFBD><41><EFBFBD>M<EFBFBD>X<EFBFBD>g<EFBFBD><67><EFBFBD>[<5B><><EFBFBD>ɒ<EFBFBD><C992>ړ]<5D><><EFBFBD><EFBFBD><EFBFBD>܂<EFBFBD><DC82>B</p>
<pre>
FRESULT f_forward (
  FIL* <span class="arg">fp</span>,                         <span class="c">/* [IN] <20>t<EFBFBD>@<40>C<EFBFBD><43><EFBFBD>E<EFBFBD>I<EFBFBD>u<EFBFBD>W<EFBFBD>F<EFBFBD>N<EFBFBD>g<EFBFBD>\<5C><><EFBFBD><EFBFBD> */</span>
  UINT (*<span class="arg">func</span>)(const BYTE*,UINT),  <span class="c">/* [IN] <20>f<EFBFBD>[<5B>^<5E>]<5D><><EFBFBD>֐<EFBFBD> */</span>
  UINT <span class="arg">btf</span>,                        <span class="c">/* [IN] <20>]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>o<EFBFBD>C<EFBFBD>g<EFBFBD><67> */</span>
  UINT* <span class="arg">bf</span>                         <span class="c">/* [OUT] <20>]<5D><><EFBFBD><EFBFBD><EFBFBD>ꂽ<EFBFBD>o<EFBFBD>C<EFBFBD>g<EFBFBD><67> */</span>
);
</pre>
</div>

<div class="para arg">
<h4><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h4>
<dl class="par">
<dt>fp</dt>
<dd><EFBFBD>t<EFBFBD>@<40>C<EFBFBD><43><EFBFBD>E<EFBFBD>I<EFBFBD>u<EFBFBD>W<EFBFBD>F<EFBFBD>N<EFBFBD>g<EFBFBD>\<5C><><EFBFBD>̂ւ̃|<7C>C<EFBFBD><43><EFBFBD>^<5E><><EFBFBD>w<EFBFBD>肵<EFBFBD>܂<EFBFBD><DC82>B</dd>
<dt>func</dt>
<dd><EFBFBD>f<EFBFBD>[<5B>^<5E><><EFBFBD>n<EFBFBD><6E><EFBFBD><EFBFBD><EFBFBD>[<5B>U<EFBFBD><55><EFBFBD>`<60>֐<EFBFBD><D690>ւ̃|<7C>C<EFBFBD><43><EFBFBD>^<5E><><EFBFBD>w<EFBFBD>肵<EFBFBD>܂<EFBFBD><DC82>B<EFBFBD><42><EFBFBD>̊֐<CC8A><D690>̎d<CC8E>l<EFBFBD>̓T<CD83><54><EFBFBD>v<EFBFBD><76><EFBFBD><EFBFBD><EFBFBD>Q<EFBFBD>Ƃ<EFBFBD><C682>Ă<EFBFBD><C482><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>B</dd>
<dt>btf</dt>
<dd><EFBFBD>]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>o<EFBFBD>C<EFBFBD>g<EFBFBD><67>(0<>`UINT<4E>̍ő<CC8D><C591>l)<29><><EFBFBD>w<EFBFBD>肵<EFBFBD>܂<EFBFBD><DC82>B</dd>
<dt>bf</dt>
<dd><EFBFBD><EFBFBD><EFBFBD>ۂɓ]<5D><><EFBFBD><EFBFBD><EFBFBD>ꂽ<EFBFBD>o<EFBFBD>C<EFBFBD>g<EFBFBD><67><EFBFBD><EFBFBD><EFBFBD>i<EFBFBD>[<5B><><EFBFBD><EFBFBD><EFBFBD>ϐ<EFBFBD><CF90><EFBFBD><EFBFBD>w<EFBFBD><77><EFBFBD>|<7C>C<EFBFBD><43><EFBFBD>^<5E><><EFBFBD>w<EFBFBD>肵<EFBFBD>܂<EFBFBD><DC82>B</dd>
</dl>
</div>


<div class="para ret">
<h4><EFBFBD>߂<EFBFBD><EFBFBD>l</h4>
<p>
<a href="rc.html#ok">FR_OK</a>,
<a href="rc.html#de">FR_DISK_ERR</a>,
<a href="rc.html#ie">FR_INT_ERR</a>,
<a href="rc.html#nr">FR_NOT_READY</a>,
<a href="rc.html#de">FR_DENIED</a>,
<a href="rc.html#io">FR_INVALID_OBJECT</a>,
<a href="rc.html#tm">FR_TIMEOUT</a>
</p>
</div>


<div class="para desc">
<h4><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h4>
<p><EFBFBD>t<EFBFBD>@<40>C<EFBFBD><43><EFBFBD>̃f<CC83>[<5B>^<5E><><EFBFBD>o<EFBFBD>b<EFBFBD>t<EFBFBD>@<40>ɓǂݏo<DD8F><6F><EFBFBD><EFBFBD><EFBFBD>ɑ<EFBFBD><C991>M<EFBFBD>X<EFBFBD>g<EFBFBD><67><EFBFBD>[<5B><><EFBFBD>ɒ<EFBFBD><C992>ړ]<5D><><EFBFBD><EFBFBD><EFBFBD>܂<EFBFBD><DC82>B<EFBFBD>A<EFBFBD>v<EFBFBD><76><EFBFBD>P<EFBFBD>[<5B>V<EFBFBD><56><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ńf<C583>[<5B>^<5E>E<EFBFBD>o<EFBFBD>b<EFBFBD>t<EFBFBD>@<40><><EFBFBD>K<EFBFBD>v<EFBFBD>Ƃ<EFBFBD><C682>Ȃ<EFBFBD><C882>̂ŁA<C581><41><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̌<EFBFBD><CC8C><EFBFBD><EFBFBD>ꂽ<EFBFBD><EFBFBD><C28B>ŗL<C597><4C><EFBFBD>ł<EFBFBD><C582>B<EFBFBD><42><EFBFBD>[<5B>h/<2F><><EFBFBD>C<EFBFBD>g<EFBFBD>E<EFBFBD>|<7C>C<EFBFBD><43><EFBFBD>^<5E>͓]<5D><><EFBFBD><EFBFBD><EFBFBD>ꂽ<EFBFBD>o<EFBFBD>C<EFBFBD>g<EFBFBD><67><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>i<EFBFBD>݂܂<DD82><DC82>B<EFBFBD>w<EFBFBD>肳<EFBFBD>ꂽ<EFBFBD>o<EFBFBD>C<EFBFBD>g<EFBFBD><67><EFBFBD>̓]<5D><><EFBFBD><EFBFBD><EFBFBD>Ƀt<C983>@<40>C<EFBFBD><43><EFBFBD>̏I<CC8F>[<5B>ɒB<C992><42><EFBFBD><EFBFBD><EFBFBD>ꍇ<EFBFBD>⑗<EFBFBD>M<EFBFBD>X<EFBFBD>g<EFBFBD><67><EFBFBD>[<5B><><EFBFBD><EFBFBD><EFBFBD>r<EFBFBD>W<EFBFBD>[<5B>ɂȂ<C982><C882><EFBFBD><EFBFBD>ꍇ<EFBFBD>A<tt class="arg">*bf</tt><EFBFBD><EFBFBD><tt class="arg">btf</tt><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȃ<EFBFBD><EFBFBD>܂<EFBFBD><EFBFBD>B</p>
</div>


<div class="para comp">
<h4><EFBFBD>Ή<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></h4>
<p><tt>_USE_FORWARD == 1</tt><EFBFBD>ŁA<EFBFBD><EFBFBD><EFBFBD><EFBFBD><tt>_FS_TINY == 1</tt><EFBFBD>̂Ƃ<EFBFBD><EFBFBD>Ɏg<EFBFBD>p<EFBFBD>\<5C>ł<EFBFBD><C582>B</p>
</div>


<div class="para use">
<h4><EFBFBD>g<EFBFBD>p<EFBFBD><EFBFBD><EFBFBD>i<EFBFBD>I<EFBFBD>[<5B>f<EFBFBD>B<EFBFBD>I<EFBFBD>Đ<EFBFBD><C490>j</h4>
<pre>
<span class="c">/*-----------------------------------------------------------------------*/</span>
<span class="c">/* f_forward<72>֐<EFBFBD><D690><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ă΂<C482><CE82><EFBFBD><EFBFBD>f<EFBFBD>[<5B>^<5E><><EFBFBD>M<EFBFBD>֐<EFBFBD><D690>̗<EFBFBD>                           */</span>
<span class="c">/*-----------------------------------------------------------------------*/</span>

UINT out_stream (   <span class="c">/* <20>߂<EFBFBD><DF82>l: <20>]<5D><><EFBFBD><EFBFBD><EFBFBD>ꂽ<EFBFBD>o<EFBFBD>C<EFBFBD>g<EFBFBD><67><EFBFBD>܂<EFBFBD><DC82>̓X<CD83>g<EFBFBD><67><EFBFBD>[<5B><><EFBFBD>̏<EFBFBD><CC8F><EFBFBD> */</span>
    const BYTE *p,  <span class="c">/* <20>]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>f<EFBFBD>[<5B>^<5E><><EFBFBD>w<EFBFBD><77><EFBFBD>|<7C>C<EFBFBD><43><EFBFBD>^ */</span>
    UINT btf        <span class="c">/* &gt;0: <20>]<5D><><EFBFBD><EFBFBD><EFBFBD>s<EFBFBD><73>(<28>o<EFBFBD>C<EFBFBD>g<EFBFBD><67>). 0: <20>X<EFBFBD>g<EFBFBD><67><EFBFBD>[<5B><><EFBFBD>̏<EFBFBD><CC8F>Ԃ𒲂ׂ<F092B282> */</span>
)
{
    UINT cnt = 0;


    if (btf == 0) {     <span class="c">/* <20>Z<EFBFBD><5A><EFBFBD>X<EFBFBD>v<EFBFBD><76> */</span>
        <span class="c">/* <20>X<EFBFBD>g<EFBFBD><67><EFBFBD>[<5B><><EFBFBD>̏<EFBFBD><CC8F>Ԃ<EFBFBD><D482>Ԃ<EFBFBD> (0: <20>r<EFBFBD>W<EFBFBD>[, 1: <20><><EFBFBD>f<EFBFBD>B) */</span>
        <span class="c">/* <20><><EFBFBD>U<EFBFBD>A<EFBFBD><41><EFBFBD>f<EFBFBD>B<EFBFBD><42><EFBFBD>Ԃ<EFBFBD><D482><EFBFBD><EFBFBD><EFBFBD><EFBFBD>A<EFBFBD><41><EFBFBD><EFBFBD><EFBFBD>]<5D><><EFBFBD>v<EFBFBD><76><EFBFBD>ŏ<EFBFBD><C58F>Ȃ<EFBFBD><C882>Ƃ<EFBFBD>1<EFBFBD>o<EFBFBD>C<EFBFBD>g<EFBFBD><67> */</span>
        <span class="c">/* <20>]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȃ<EFBFBD><C882><EFBFBD> f_forward<72>֐<EFBFBD><D690><EFBFBD> FR_INT_ERR <20>ƂȂ<C682><C882>B */</span>
        if (FIFO_READY) cnt = 1;
    }
    else {              <span class="c">/* <20>]<5D><><EFBFBD>v<EFBFBD><76> */</span>
        do {    <span class="c">/* <20>S<EFBFBD>Ẵo<CC83>C<EFBFBD>g<EFBFBD><67><EFBFBD>]<5D><><EFBFBD><EFBFBD><EFBFBD>邩<EFBFBD>A<EFBFBD>X<EFBFBD>g<EFBFBD><67><EFBFBD>[<5B><><EFBFBD><EFBFBD><EFBFBD>r<EFBFBD>W<EFBFBD>[<5B>ɂȂ<C982><C882>܂ŌJ<C58C><4A><EFBFBD>Ԃ<EFBFBD> */</span>
            FIFO_PORT = *p++;
            cnt++;
        } while (cnt &lt; btf &amp;&amp; FIFO_READY);
    }

    return cnt;
}


<span class="c">/*-----------------------------------------------------------------------*/</span>
<span class="c">/* f_forward<72>֐<EFBFBD><D690>̎g<CC8E>p<EFBFBD><70>                                                 */</span>
<span class="c">/*-----------------------------------------------------------------------*/</span>

FRESULT play_file (
    char *fn        <span class="c">/* <20>Đ<EFBFBD><C490><EFBFBD><EFBFBD><EFBFBD><EFBFBD>I<EFBFBD>[<5B>f<EFBFBD>B<EFBFBD>I<EFBFBD>E<EFBFBD>t<EFBFBD>@<40>C<EFBFBD><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>w<EFBFBD><77><EFBFBD>|<7C>C<EFBFBD><43><EFBFBD>^ */</span>
)
{
    FRESULT rc;
    FIL fil;
    UINT dmy;

    <span class="c">/* <20>t<EFBFBD>@<40>C<EFBFBD><43><EFBFBD><EFBFBD><EFBFBD>ǂݏo<DD8F><6F><EFBFBD><EFBFBD><EFBFBD>[<5B>h<EFBFBD>ŊJ<C58A><4A> */</span>
    rc = f_open(&amp;fil, fn, FA_READ);
    if (rc) return rc;

    <span class="c">/* <20>S<EFBFBD>Ẵf<CC83>[<5B>^<5E><><EFBFBD>]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>邩<EFBFBD>G<EFBFBD><47><EFBFBD>[<5B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>܂ő<DC82><C591><EFBFBD><EFBFBD><EFBFBD> */</span>
    while (rc == FR_OK &amp;&amp; fil.fptr &lt; fil.fsize) {

        <span class="c">/* <20>ق<EFBFBD><D982>̏<EFBFBD><CC8F><EFBFBD>... */</span>

        <span class="c">/* <20><><EFBFBD><EFBFBD><EFBFBD>I<EFBFBD>܂<EFBFBD><DC82>͗v<CD97><76><EFBFBD>ɉ<EFBFBD><C989><EFBFBD><EFBFBD>ăf<C483>[<5B>^<5E><><EFBFBD>X<EFBFBD>g<EFBFBD><67><EFBFBD>[<5B><><EFBFBD>ɑ<EFBFBD><C991>o<EFBFBD><6F><EFBFBD><EFBFBD> */</span>
        rc = f_forward(&amp;fil, out_stream, 1000, &amp;dmy);
    }

    <span class="c">/* <20>t<EFBFBD>@<40>C<EFBFBD><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD><C282>Ė߂<C496> */</span>
    f_close(&amp;fil);
    return rc;
}
</pre>
</div>


<div class="para ref">
<h4><EFBFBD>Q<EFBFBD><EFBFBD></h4>
<p><tt><a href="open.html">f_open</a>, <a href="gets.html">fgets</a>, <a href="write.html">f_write</a>, <a href="close.html">f_close</a>, <a href="sfile.html">FIL</a></tt></p>
</div>

<p class="foot"><a href="../00index_j.html"><EFBFBD>߂<EFBFBD></a></p>
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