pdf417codec_8h.html

PDF417二维条码源代码

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<p>
Create the segment input text for the encoder by lines of text. 
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Returns a handle to the text.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>len</em>&nbsp;</td><td>Length of lines array </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>lines</em>&nbsp;</td><td>Array of null-terminated strings describing segments in text format </td></tr>
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<a class="anchor" name="a11" doxytag="pdf417codec.h::pdf417_decodePlain"></a><p>
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          <td class="md" nowrap valign="top"><a class="el" href="pdf417codec_8h.html#a1">uint</a> pdf417_decodePlain           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="pdf417codec_8h.html#a1">uint</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>imghandle</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
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<p>
Process a black&amp;white or grayscale image and read possible barcode. 
<p>
Returns a handle to a char[] with the decoded plain bytes.     </td>
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<a class="anchor" name="a10" doxytag="pdf417codec.h::pdf417_encodePlain"></a><p>
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          <td class="md" nowrap valign="top"><a class="el" href="pdf417codec_8h.html#a1">uint</a> pdf417_encodePlain           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">int&nbsp;</td>
          <td class="mdname" nowrap> <em>in_rval</em>, </td>
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          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>in_cval</em>, </td>
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          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>in_ec_level</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>use_default</em>, </td>
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          <td class="md" nowrap>char *&nbsp;</td>
          <td class="mdname" nowrap> <em>buffer</em>, </td>
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          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>buflen</em></td>
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<p>
High level encoding routine dealing with plain bytes. 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>in_rval</em>&nbsp;</td><td>number of rows of codewords or -1 to let the function calculate the appropriate number. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>in_cval</em>&nbsp;</td><td>number of columns of codewords including additional left and right codeword but not start and stop. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>in_ec_level</em>&nbsp;</td><td>Level of error correction (0: least, 8: most) </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>use_default</em>&nbsp;</td><td>if true ignores in_rval and in_cval and sets it to default values. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>buffer</em>&nbsp;</td><td>Pointer to plain bytes to encode. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>buflen</em>&nbsp;</td><td>if buflen &gt;= 0 length of buffer, if buflen == -1, length of buffer is determined by terminating '\0' in buffer.</td></tr>
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<dl compact><dt><b>Returns:</b></dt><dd>handle to an image with the barcode without borders, each module has width and height of one pixel </dd></dl>
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<a class="anchor" name="a9" doxytag="pdf417codec.h::pdf417_encodeSegments"></a><p>
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          <td class="md" nowrap valign="top"><a class="el" href="pdf417codec_8h.html#a1">uint</a> pdf417_encodeSegments           </td>
          <td class="md" valign="top">(&nbsp;</td>
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          <td class="mdname" nowrap> <em>in_rval</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>in_cval</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>in_ec_level</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap> <em>use_default</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap><a class="el" href="pdf417codec_8h.html#a1">uint</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>segs_handle</em></td>
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<p>
Encoding routine if dealing with segments. 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>in_rval</em>&nbsp;</td><td>number of rows of codewords or -1 to let the function calculate the appropriate number. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>in_cval</em>&nbsp;</td><td>number of columns of codewords including additional left and right codeword but not start and stop. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>in_ec_level</em>&nbsp;</td><td>Level of error correction (0: least, 8: most) </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>use_default</em>&nbsp;</td><td>if true ignores in_rval and in_cval and sets it to default values. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>segs_handle</em>&nbsp;</td><td>Handle to lines of text in the segment text format, created by #pdf417_createRawByLines or to a Segments object</td></tr>
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<dl compact><dt><b>Returns:</b></dt><dd>handle to an image with the barcode without borders, each module has width and height of one pixel </dd></dl>
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<a class="anchor" name="a6" doxytag="pdf417codec.h::pdf417_flushall"></a><p>
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          <td class="md" nowrap valign="top">void pdf417_flushall           </td>
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          <td class="md" valign="top">&nbsp;)&nbsp;</td>
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<p>
Flush stdout (for debugging purposes). 
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<a class="anchor" name="a4" doxytag="pdf417codec.h::pdf417_freeHandle"></a><p>
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          <td class="md" nowrap valign="top">int pdf417_freeHandle           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="pdf417codec_8h.html#a1">uint</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>handle</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
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Decrement reference count of handle. 
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If it becomes 0, the handle will be invalid.     </td>
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<a class="anchor" name="a18" doxytag="pdf417codec.h::pdf417_getImageDataCopy"></a><p>
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          <td class="md" nowrap valign="top">int pdf417_getImageDataCopy           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="pdf417codec_8h.html#a1">uint</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>imghandle</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap><a class="el" href="pdf417codec_8h.html#a2">ubyte</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>dest</em></td>
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          <td class="md">)&nbsp;</td>
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<p>
Copies the data of the image into dest array (size: width*height of image). 
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<a class="anchor" name="a19" doxytag="pdf417codec.h::pdf417_getImageDataCopyRgb"></a><p>
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          <td class="md" nowrap valign="top">int pdf417_getImageDataCopyRgb           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="pdf417codec_8h.html#a1">uint</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>imghandle</em>, </td>
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          <td class="md" nowrap align="right"></td>
          <td class="md"></td>
          <td class="md" nowrap><a class="el" href="pdf417codec_8h.html#a2">ubyte</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>dest</em></td>
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