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Xilinx Driver llfifo v4_0: xstreamer.h File Reference
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<h3 class="PageHeader">Xilinx Processor IP Library</h3>
<hl>Software Drivers</hl>
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<h1>xstreamer.h File Reference</h1><code>#include &quot;xenv.h&quot;</code><br/>
<code>#include &quot;<a class="el" href="xdebug_8h.html">xdebug.h</a>&quot;</code><br/>
<code>#include &quot;xil_types.h&quot;</code><br/>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Classes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">union &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="union_x_strm___aligned_buffer_type.html">XStrm_AlignedBufferType</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_x_strm___rx_fifo_streamer.html">XStrm_RxFifoStreamer</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_x_strm___tx_fifo_streamer.html">XStrm_TxFifoStreamer</a></td></tr>
<tr><td colspan="2"><h2>Defines</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#ab615f7de0f7b5b69b912da2f24c0f4b9">XSTREAMER_H</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#a4a3e97b47b47ea3b883952f58cb9deb9">LARGEST_FIFO_KEYHOLE_SIZE_WORDS</a>&nbsp;&nbsp;&nbsp;4</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#a7c2fa1c0b560f90b656aaac27721769c">XStrm_TxVacancy</a>(InstancePtr)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#a52d6c5d159859cfcf8e43daf7d54ad07">XStrm_RxOccupancy</a>(InstancePtr)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#a2357fcad0c03d6b706d5ad71c4d7b749">XStrm_IsRxInternalEmpty</a>(InstancePtr)&nbsp;&nbsp;&nbsp;(((InstancePtr)-&gt;FrmByteCnt == 0) ? TRUE : FALSE)</td></tr>
<tr><td colspan="2"><h2>Typedefs</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef int(*&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#a2b6ed316a48db32e9569b2ff8b992c4d">XStrm_XferFnType</a> )(void *FifoInstance, void *BufPtr, unsigned WordCount)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef u32(*&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#a967adc3a060d1799795857d4e1ab0397">XStrm_GetLenFnType</a> )(void *FifoInstance)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef void(*&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#a353349b163baa3064b69277a3dbcb96c">XStrm_SetLenFnType</a> )(void *FifoInstance, u32 ByteCount)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef u32(*&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#a63293ed02cfb43a6207cd1eb888a8a21">XStrm_GetOccupancyFnType</a> )(void *FifoInstance)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef u32(*&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#a5f92d41a20196392c2f4f61ec8757e85">XStrm_GetVacancyFnType</a> )(void *FifoInstance)</td></tr>
<tr><td colspan="2"><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#a52ec29cc3b758b6a2b857d883ac69d4a">XStrm_RxInitialize</a> (<a class="el" href="struct_x_strm___rx_fifo_streamer.html">XStrm_RxFifoStreamer</a> *InstancePtr, unsigned FifoWidth, void *FifoInstance, <a class="el" href="xstreamer_8h.html#a2b6ed316a48db32e9569b2ff8b992c4d">XStrm_XferFnType</a> ReadFn, <a class="el" href="xstreamer_8h.html#a967adc3a060d1799795857d4e1ab0397">XStrm_GetLenFnType</a> GetLenFn, <a class="el" href="xstreamer_8h.html#a63293ed02cfb43a6207cd1eb888a8a21">XStrm_GetOccupancyFnType</a> GetOccupancyFn)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#a8a67c77f811a505b658e06642eb9c964">XStrm_TxInitialize</a> (<a class="el" href="struct_x_strm___tx_fifo_streamer.html">XStrm_TxFifoStreamer</a> *InstancePtr, unsigned FifoWidth, void *FifoInstance, <a class="el" href="xstreamer_8h.html#a2b6ed316a48db32e9569b2ff8b992c4d">XStrm_XferFnType</a> WriteFn, <a class="el" href="xstreamer_8h.html#a353349b163baa3064b69277a3dbcb96c">XStrm_SetLenFnType</a> SetLenFn, <a class="el" href="xstreamer_8h.html#a5f92d41a20196392c2f4f61ec8757e85">XStrm_GetVacancyFnType</a> GetVacancyFn)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#a1e99fb51e0cfab7d0e8de5e93c27fd9c">XStrm_TxSetLen</a> (<a class="el" href="struct_x_strm___tx_fifo_streamer.html">XStrm_TxFifoStreamer</a> *InstancePtr, u32 Bytes)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#abcdec1e8914d00b5f4c0e77425d15cbf">XStrm_Write</a> (<a class="el" href="struct_x_strm___tx_fifo_streamer.html">XStrm_TxFifoStreamer</a> *InstancePtr, void *BufPtr, unsigned bytes)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">u32&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#a479d2eb3193ad0a5efc3c3b432a78381">XStrm_RxGetLen</a> (<a class="el" href="struct_x_strm___rx_fifo_streamer.html">XStrm_RxFifoStreamer</a> *InstancePtr)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="xstreamer_8h.html#a214198a61d21fbbb252338c775ec4d34">XStrm_Read</a> (<a class="el" href="struct_x_strm___rx_fifo_streamer.html">XStrm_RxFifoStreamer</a> *InstancePtr, void *BufPtr, unsigned bytes)</td></tr>
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<hr/><h2>Define Documentation</h2>
<a class="anchor" id="a4a3e97b47b47ea3b883952f58cb9deb9"></a><!-- doxytag: member="xstreamer.h::LARGEST_FIFO_KEYHOLE_SIZE_WORDS" ref="a4a3e97b47b47ea3b883952f58cb9deb9" args="" -->
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<td class="memname">#define LARGEST_FIFO_KEYHOLE_SIZE_WORDS&nbsp;&nbsp;&nbsp;4</td>
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<a class="anchor" id="ab615f7de0f7b5b69b912da2f24c0f4b9"></a><!-- doxytag: member="xstreamer.h::XSTREAMER_H" ref="ab615f7de0f7b5b69b912da2f24c0f4b9" args="" -->
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<td class="memname">#define XSTREAMER_H</td>
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<a class="anchor" id="a2357fcad0c03d6b706d5ad71c4d7b749"></a><!-- doxytag: member="xstreamer.h::XStrm_IsRxInternalEmpty" ref="a2357fcad0c03d6b706d5ad71c4d7b749" args="(InstancePtr)" -->
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<td class="memname">#define XStrm_IsRxInternalEmpty</td>
<td>(</td>
<td class="paramtype">InstancePtr&nbsp;</td>
<td class="paramname"></td>
<td>&nbsp;)&nbsp;</td>
<td>&nbsp;&nbsp;&nbsp;(((InstancePtr)-&gt;FrmByteCnt == 0) ? TRUE : FALSE)</td>
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<a class="anchor" id="a52d6c5d159859cfcf8e43daf7d54ad07"></a><!-- doxytag: member="xstreamer.h::XStrm_RxOccupancy" ref="a52d6c5d159859cfcf8e43daf7d54ad07" args="(InstancePtr)" -->
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<td class="memname">#define XStrm_RxOccupancy</td>
<td>(</td>
<td class="paramtype">InstancePtr&nbsp;</td>
<td class="paramname"></td>
<td>&nbsp;)&nbsp;</td>
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<b>Value:</b><div class="fragment"><pre class="fragment">( \
((*(InstancePtr)-&gt;GetOccupancyFn)((InstancePtr)-&gt;FifoInstance)) + \
( \
((InstancePtr)-&gt;FrmByteCnt) ? \
((InstancePtr)-&gt;FifoWidth - (InstancePtr)-&gt;HeadIndex) : \
0 \
) \
)
</pre></div>
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<a class="anchor" id="a7c2fa1c0b560f90b656aaac27721769c"></a><!-- doxytag: member="xstreamer.h::XStrm_TxVacancy" ref="a7c2fa1c0b560f90b656aaac27721769c" args="(InstancePtr)" -->
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<td class="memname">#define XStrm_TxVacancy</td>
<td>(</td>
<td class="paramtype">InstancePtr&nbsp;</td>
<td class="paramname"></td>
<td>&nbsp;)&nbsp;</td>
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<b>Value:</b><div class="fragment"><pre class="fragment">(((*(InstancePtr)-&gt;GetVacancyFn)((InstancePtr)-&gt;FifoInstance)) - \
(((InstancePtr)-&gt;TailIndex + 3) / 4))
</pre></div>
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<hr/><h2>Typedef Documentation</h2>
<a class="anchor" id="a967adc3a060d1799795857d4e1ab0397"></a><!-- doxytag: member="xstreamer.h::XStrm_GetLenFnType" ref="a967adc3a060d1799795857d4e1ab0397" args=")(void *FifoInstance)" -->
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<td class="memname">typedef u32(* <a class="el" href="xstreamer_8h.html#a967adc3a060d1799795857d4e1ab0397">XStrm_GetLenFnType</a>)(void *FifoInstance)</td>
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<a class="anchor" id="a63293ed02cfb43a6207cd1eb888a8a21"></a><!-- doxytag: member="xstreamer.h::XStrm_GetOccupancyFnType" ref="a63293ed02cfb43a6207cd1eb888a8a21" args=")(void *FifoInstance)" -->
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<td class="memname">typedef u32(* <a class="el" href="xstreamer_8h.html#a63293ed02cfb43a6207cd1eb888a8a21">XStrm_GetOccupancyFnType</a>)(void *FifoInstance)</td>
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<a class="anchor" id="a5f92d41a20196392c2f4f61ec8757e85"></a><!-- doxytag: member="xstreamer.h::XStrm_GetVacancyFnType" ref="a5f92d41a20196392c2f4f61ec8757e85" args=")(void *FifoInstance)" -->
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<td class="memname">typedef u32(* <a class="el" href="xstreamer_8h.html#a5f92d41a20196392c2f4f61ec8757e85">XStrm_GetVacancyFnType</a>)(void *FifoInstance)</td>
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<a class="anchor" id="a353349b163baa3064b69277a3dbcb96c"></a><!-- doxytag: member="xstreamer.h::XStrm_SetLenFnType" ref="a353349b163baa3064b69277a3dbcb96c" args=")(void *FifoInstance, u32 ByteCount)" -->
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<td class="memname">typedef void(* <a class="el" href="xstreamer_8h.html#a353349b163baa3064b69277a3dbcb96c">XStrm_SetLenFnType</a>)(void *FifoInstance, u32 ByteCount)</td>
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<a class="anchor" id="a2b6ed316a48db32e9569b2ff8b992c4d"></a><!-- doxytag: member="xstreamer.h::XStrm_XferFnType" ref="a2b6ed316a48db32e9569b2ff8b992c4d" args=")(void *FifoInstance, void *BufPtr, unsigned WordCount)" -->
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<td class="memname">typedef int(* <a class="el" href="xstreamer_8h.html#a2b6ed316a48db32e9569b2ff8b992c4d">XStrm_XferFnType</a>)(void *FifoInstance, void *BufPtr, unsigned WordCount)</td>
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<hr/><h2>Function Documentation</h2>
<a class="anchor" id="a214198a61d21fbbb252338c775ec4d34"></a><!-- doxytag: member="xstreamer.h::XStrm_Read" ref="a214198a61d21fbbb252338c775ec4d34" args="(XStrm_RxFifoStreamer *InstancePtr, void *BufPtr, unsigned bytes)" -->
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<td class="memname">void XStrm_Read </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_x_strm___rx_fifo_streamer.html">XStrm_RxFifoStreamer</a> *&nbsp;</td>
<td class="paramname"> <em>InstancePtr</em>, </td>
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<td></td>
<td class="paramtype">void *&nbsp;</td>
<td class="paramname"> <em>BufPtr</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned&nbsp;</td>
<td class="paramname"> <em>bytes</em></td><td>&nbsp;</td>
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<td></td>
<td>)</td>
<td></td><td></td><td></td>
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<a class="anchor" id="a479d2eb3193ad0a5efc3c3b432a78381"></a><!-- doxytag: member="xstreamer.h::XStrm_RxGetLen" ref="a479d2eb3193ad0a5efc3c3b432a78381" args="(XStrm_RxFifoStreamer *InstancePtr)" -->
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<td class="memname">u32 XStrm_RxGetLen </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_x_strm___rx_fifo_streamer.html">XStrm_RxFifoStreamer</a> *&nbsp;</td>
<td class="paramname"> <em>InstancePtr</em></td>
<td>&nbsp;)&nbsp;</td>
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<a class="anchor" id="a52ec29cc3b758b6a2b857d883ac69d4a"></a><!-- doxytag: member="xstreamer.h::XStrm_RxInitialize" ref="a52ec29cc3b758b6a2b857d883ac69d4a" args="(XStrm_RxFifoStreamer *InstancePtr, unsigned FifoWidth, void *FifoInstance, XStrm_XferFnType ReadFn, XStrm_GetLenFnType GetLenFn, XStrm_GetOccupancyFnType GetOccupancyFn)" -->
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<td class="memname">void XStrm_RxInitialize </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_x_strm___rx_fifo_streamer.html">XStrm_RxFifoStreamer</a> *&nbsp;</td>
<td class="paramname"> <em>InstancePtr</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned&nbsp;</td>
<td class="paramname"> <em>FifoWidth</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">void *&nbsp;</td>
<td class="paramname"> <em>FifoInstance</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="xstreamer_8h.html#a2b6ed316a48db32e9569b2ff8b992c4d">XStrm_XferFnType</a>&nbsp;</td>
<td class="paramname"> <em>ReadFn</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype"><a class="el" href="xstreamer_8h.html#a967adc3a060d1799795857d4e1ab0397">XStrm_GetLenFnType</a>&nbsp;</td>
<td class="paramname"> <em>GetLenFn</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="xstreamer_8h.html#a63293ed02cfb43a6207cd1eb888a8a21">XStrm_GetOccupancyFnType</a>&nbsp;</td>
<td class="paramname"> <em>GetOccupancyFn</em></td><td>&nbsp;</td>
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<td>)</td>
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<a class="anchor" id="a8a67c77f811a505b658e06642eb9c964"></a><!-- doxytag: member="xstreamer.h::XStrm_TxInitialize" ref="a8a67c77f811a505b658e06642eb9c964" args="(XStrm_TxFifoStreamer *InstancePtr, unsigned FifoWidth, void *FifoInstance, XStrm_XferFnType WriteFn, XStrm_SetLenFnType SetLenFn, XStrm_GetVacancyFnType GetVacancyFn)" -->
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<td class="memname">void XStrm_TxInitialize </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_x_strm___tx_fifo_streamer.html">XStrm_TxFifoStreamer</a> *&nbsp;</td>
<td class="paramname"> <em>InstancePtr</em>, </td>
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<td class="paramtype">unsigned&nbsp;</td>
<td class="paramname"> <em>FifoWidth</em>, </td>
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<td class="paramtype">void *&nbsp;</td>
<td class="paramname"> <em>FifoInstance</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="xstreamer_8h.html#a2b6ed316a48db32e9569b2ff8b992c4d">XStrm_XferFnType</a>&nbsp;</td>
<td class="paramname"> <em>WriteFn</em>, </td>
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<td class="paramtype"><a class="el" href="xstreamer_8h.html#a353349b163baa3064b69277a3dbcb96c">XStrm_SetLenFnType</a>&nbsp;</td>
<td class="paramname"> <em>SetLenFn</em>, </td>
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<td class="paramtype"><a class="el" href="xstreamer_8h.html#a5f92d41a20196392c2f4f61ec8757e85">XStrm_GetVacancyFnType</a>&nbsp;</td>
<td class="paramname"> <em>GetVacancyFn</em></td><td>&nbsp;</td>
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<td>)</td>
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<a class="anchor" id="a1e99fb51e0cfab7d0e8de5e93c27fd9c"></a><!-- doxytag: member="xstreamer.h::XStrm_TxSetLen" ref="a1e99fb51e0cfab7d0e8de5e93c27fd9c" args="(XStrm_TxFifoStreamer *InstancePtr, u32 Bytes)" -->
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<td class="memname">void XStrm_TxSetLen </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_x_strm___tx_fifo_streamer.html">XStrm_TxFifoStreamer</a> *&nbsp;</td>
<td class="paramname"> <em>InstancePtr</em>, </td>
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<td class="paramtype">u32&nbsp;</td>
<td class="paramname"> <em>Bytes</em></td><td>&nbsp;</td>
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<a class="anchor" id="abcdec1e8914d00b5f4c0e77425d15cbf"></a><!-- doxytag: member="xstreamer.h::XStrm_Write" ref="abcdec1e8914d00b5f4c0e77425d15cbf" args="(XStrm_TxFifoStreamer *InstancePtr, void *BufPtr, unsigned bytes)" -->
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<td class="memname">void XStrm_Write </td>
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<td class="paramtype"><a class="el" href="struct_x_strm___tx_fifo_streamer.html">XStrm_TxFifoStreamer</a> *&nbsp;</td>
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