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83 lines
2.0 KiB
83 lines
2.0 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<html>
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<head>
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<title>KSquirrel: development</title>
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<meta name='Author' content='Baryshev Dmitry/Krasu'>
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<meta http-equiv='Content-Type' content='text/html; charset=iso-8859-1'>
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<link rel='stylesheet' href='styles.css' type='text/css'>
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</head>
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<body>
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When SQ_LibraryHandler loaded all found libraries, KSquirrel obtains the ability to decode any supported image format.
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Here is a sample code to decode some image with library. Error handling is turned <b>off</b>. You can find real examples in
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source distribution of ksquirrel-libs.
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<p><b><u>Sample</u></b>
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<table cellpadding="2" cellspacing="2" width="70%" align="center">
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<tbody>
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<tr>
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<td valign="top" bgcolor="#CCCCCC">
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<pre>
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int i, j, current = 0;
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fmt_info finfo;
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RGBA *image = NULL, *scan;
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fmt_codec_base *codeK;
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TQString file = "/home/krasu/animation1.gif";
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<b>Determine the library and codec</b>
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codeK = SQ_LibraryHandler::instance()->libraryForFile(file)->codec;
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<b>Init: open file, etc.</b>
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codeK->read_init(file.ascii());
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while(true)
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{
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i = codeK->read_next();
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<b>Break, if we've decoded all available images in file</b>
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if(i == SQE_NOTOK)
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break;
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<b>Obtain the latest information (current image dimensions, etc.)</b>
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finfo = codeK->information();
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<b>realloc memory for new image</b>
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image = (RGBA *)realloc(image, finfo.image[current].w * finfo.image[current].h * sizeof(RGBA));
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<b>fill with white color (RGBA(255,255,255,255))</b>
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memset(image, 255, finfo.image[current].w * finfo.image[current].h * sizeof(RGBA));
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for(int pass = 0;pass < finfo.image[current].passes;pass++)
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{
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codeK->read_next_pass();
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for(j = 0;j < finfo.image[current].h;j++)
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{
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scan = image + j * finfo.image[current].w;
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codeK->read_scanline(scan);
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}
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}
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<b>Do something with decoded image here.
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...</b>
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current++;
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}
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codeK->read_close();
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free(image);
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</pre>
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</td>
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</tr>
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</tbody>
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</table>
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</body>
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</html>
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