<?php // example 01 : simple open and close
require_once( "cfile.class.php" );
echo "<b>EXAMPLE 07</b>: we read some fields in the BITMAP (.BMP) header and we raster a palette-indexed bitmap picture in a HTML table, pixel by pixel<br><br>" ;
$CANDIDATEfile = "waves.bmp" ;
$cfile = new cfile( $CANDIDATEfile );
$bOPEN = $cfile->open( CFILE_READ_MODE );
$bERR = $cfile->is_error() ;
if ( $bOPEN && !$bERR ) // you can check open return value or internal error for safe operation
{
echo "OPEN FILE <b>$CANDIDATEfile</b> : SUCCESS<br>" ;
echo "FILE SIZE : ".( filesize( $CANDIDATEfile ) )." bytes <br>" ;
$bBEGIN = $cfile->move_to_beginning();
echo ( $bBEGIN ) ? "OK MOVE TO BEGINNING ...<br>" : "CAN'T MOVE TO THE BEGINNING ...<br>" ;
$nbytes = 2 ; // BM MARKER
$READ = $cfile->read( $nbytes, CFILE_TEXT_MODE ) ;
echo ( $READ === false ) ? "CAN'T READ from file ... <b>".$cfile->get_error_string()."</b><br>" : "BITMAP MARKER:<b>$READ</b><br>" ;
$nbytes = 4 ; // HEADER SIZE
$BITMAPFILEHEADER_SIZE = $cfile->read( $nbytes, CFILE_BINARY_INT_MODE ) ;
$nbytes = 4 ; // SKIP
$READ = $cfile->read( $nbytes, CFILE_BINARY_INT_MODE ) ;
$nbytes = 4 ; // OFFSET BITS TO BITMAP DATA
$OFFSET_BITS = $cfile->read( $nbytes, CFILE_BINARY_INT_MODE ) ;
echo ( $READ === false ) ? "CAN'T READ from file ... <b>".$cfile->get_error_string()."</b><br>" : "OFFSET BITS TO BITMAP DATA:<b>$OFFSET_BITS</b><br>" ;
$nbytes = 4 ; // size of the BITMAPINFOHEADER structure, in bytes
$READ = $cfile->read( $nbytes, CFILE_BINARY_INT_MODE ) ;
echo ( $READ === false ) ? "CAN'T READ from file ... <b>".$cfile->get_error_string()."</b><br>" : "size of the BITMAPINFOHEADER structure, in bytes:<b>$READ</b><br>" ;
$nbytes = 4 ; // WIDTH
$IMAGE_W = $cfile->read( $nbytes, CFILE_BINARY_INT_MODE ) ;
echo ( $IMAGE_W === false ) ? "CAN'T READ from file ... <b>".$cfile->get_error_string()."</b><br>" : "IMAGE WIDTH :<b>$IMAGE_W</b><br>" ;
$nbytes = 4 ; // HEIGHT
$IMAGE_H = $cfile->read( $nbytes, CFILE_BINARY_INT_MODE ) ;
echo ( $IMAGE_H === false ) ? "CAN'T READ from file ... <b>".$cfile->get_error_string()."</b><br>" : "IMAGE HEIGHT :<b>$IMAGE_H</b><br>" ;
$nbytes = 2 ; // PLANES
$READ = $cfile->read( $nbytes, CFILE_BINARY_INT_MODE ) ;
echo ( $READ === false ) ? "CAN'T READ from file ... <b>".$cfile->get_error_string()."</b><br>" : "PLANES :<b>$READ</b><br>" ;
$nbytes = 2 ; // BITS per PIXEL
$BITS_PER_PIXEL = $cfile->read( $nbytes, CFILE_BINARY_INT_MODE ) ;
echo ( $BITS_PER_PIXEL === false ) ? "CAN'T READ from file ... <b>".$cfile->get_error_string()."</b><br>" : "BITS per PIXEL :<b>$BITS_PER_PIXEL</b><br>" ;
$nbytes = 4 ; // COMPRESSION
$READ = $cfile->read( $nbytes, CFILE_BINARY_INT_MODE ) ;
echo ( $READ === false ) ? "CAN'T READ from file ... <b>".$cfile->get_error_string()."</b><br>" : "COMPRESSION :<b>$READ</b><br>" ;
$nbytes = 4 * 5 ; // SKIP : SIZE IMAGE + XperMETER + YperMETER + CLRused + CLRimportant
$READ = $cfile->read( $nbytes, CFILE_BINARY_INT_MODE ) ;
$PALETTEarray = array();
if ( $BITS_PER_PIXEL < 24 ) // read palette
{
$CLRScount = pow( 2, $BITS_PER_PIXEL );
$nbytes = 1 ;
$COLONNE = 16 ;
echo "<br>
<table cellpadding=0 cellspacing=0 valign=\"top\" ALIGN=\"left\">
<tr><td HEIGHT=\"1\"></td></tr>
<tr><td COLSPAN=\"".( $COLONNE * 2 )."\">PALETTE</td></tr>" ;
for( $i = 0 ; $i < $CLRScount ; $i++ )
{
$PALETTE_BLUE = $cfile->read( $nbytes, CFILE_BINARY_INT_MODE ) ;
$PALETTE_GREEN = $cfile->read( $nbytes, CFILE_BINARY_INT_MODE ) ;
$PALETTE_RED = $cfile->read( $nbytes, CFILE_BINARY_INT_MODE ) ;
$PALETTE_RESERVED = $cfile->read( $nbytes, CFILE_BINARY_INT_MODE ) ;
$BK = "rgb( $PALETTE_RED, $PALETTE_GREEN, $PALETTE_BLUE )" ;
$PALETTEarray[$i] = array( $PALETTE_RED, $PALETTE_GREEN, $PALETTE_BLUE );
if ( $i % $COLONNE == 0 ) echo "<tr>" ;
echo "<td WIDTH=\"14\" HEIGHT=\"14\" STYLE=\"background-color:$BK\"></td>
<td WIDTH=\"1\"></td>" ;
if ( $i % $COLONNE == ( $COLONNE - 1 ) )
echo "</tr>
<tr><td HEIGHT=\"1\"></td></tr>" ;
}
echo "</table>" ;
}
echo "<table cellpadding=0 cellspacing=0 valign=\"top\">
<tr><td HEIGHT=\"1\"></td></tr>
<tr><td COLSPAN=\"".( $IMAGE_W )."\">PICTURE</td></tr>" ;
$BYTEStoREAD = ( $BITS_PER_PIXEL < 24 ) ? 1 : 3 ;
// padding the byte row in the image
$BYTES_PER_ROW = $BYTEStoREAD * $IMAGE_W + $REMAINDER ;
$REMAINDER = $BYTES_PER_ROW % 4 ;
$OFFSET = $OFFSET_BITS ;
for( $Hrunner = $IMAGE_H - 1 ; $Hrunner >= 0 ; $Hrunner-- )
{
$cfile->move( $OFFSET + $BYTES_PER_ROW * $Hrunner, 0 ) ;
echo "<tr>" ;
for( $Wrunner = 0 ; $Wrunner < $IMAGE_W ; $Wrunner++ )
{
$CLR = "" ;
if ( $BYTEStoREAD == 3 )
{
$PIXEL_B = $cfile->read( 1, CFILE_BINARY_INT_MODE ) ;
$PIXEL_G = $cfile->read( 1, CFILE_BINARY_INT_MODE ) ;
$PIXEL_R = $cfile->read( 1, CFILE_BINARY_INT_MODE ) ;
}
else
{
$PIXEL_INDEX = $cfile->read( 1, CFILE_BINARY_INT_MODE ) ;
$CLRtripleARRAY = $PALETTEarray[$PIXEL_INDEX] ;
$PIXEL_R = $CLRtripleARRAY[0] ;
$PIXEL_G = $CLRtripleARRAY[1] ;
$PIXEL_B = $CLRtripleARRAY[2] ;
}
$BK = "rgb( $PIXEL_R, $PIXEL_G, $PIXEL_B )" ;
echo "<td WIDTH=\"1\" HEIGHT=\"1\" STYLE=\"background-color:$BK\"></td>" ;
}
// padding the byte row in the image
for( $i = 0 ; $i < $REMAINDER ; $i++ ) $cfile->read( 1, CFILE_BINARY_INT_MODE ) ;
echo "</tr>" ;
ob_flush(); flush();
}
echo "</table>" ;
echo "<br>" ;
echo ( $cfile->close() ) ? "CLOSE FILE <b>$CANDIDATEfile</b> : SUCCESS" : $cfile->get_error_string() ;
}
else echo $cfile->get_error_string() ;
?>
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