note 64069 added to function.imagesetpixel

Here's my stab at the imagecreatefromtga function. I used code from send at mail dot 2aj dot net and others below as a basis, and added support for targa 16, targa 24 and targa 32. However, I only support uncompressed RBG data type as that's the only one I need. (I removed the return_array feature since you can simply use imagesx() and imagesy() to get the image size). Please note that I have not tested this with a targa 16 since I don't have one handy at the moment. <?php function imagecreatefromtga( $filename ) { $handle = fopen( $filename, 'rb' ); $data = fread( $handle, filesize( $filename ) ); fclose( $handle ); // Extract header information $string_length = base_convert( bin2hex( substr($data,1,1) ), 16, 10 ); $data_type = base_convert( bin2hex( substr($data,2,1) ), 16, 10 ); $width = base_convert( bin2hex( strrev( substr($data,12,2) ) ), 16, 10 ); $height = base_convert( bin2hex( strrev( substr($data,14,2) ) ), 16, 10 ); $bits_per_pixel = base_convert( bin2hex( substr($data,16,1) ), 16, 10 ); // Currenly I'm only supporting RGB Data type switch( $data_type ) // Header information taken from http://astronomy.swin.edu.au/~pbourke/dataformats/tga/ { case 2: // Uncompressed RGB image break; case 0: // No attached image data case 1: // Uncompressed color-mapped image case 3: // Uncompressed black and white image case 9: // Runlength encoded color-mapped image case 10: // Runlength encoded RGB image case 11: // Compressed black and white image case 32: // Compressed color-mapped data, using Huffman, Delta, and runlength encoding case 33: // Compressed color-mapped data, using Huffman, Delta, and runlength encoding. 4-pass quadtree-type process default: return NULL; // No support for any of these types } // Compute things we need from the header information $pointer = 18 + $string_length; $bytes_per_pixel = (int) $bits_per_pixel/8; $x = 0; $y = $height; $image = imagecreatetruecolor($width, $height); while ( $pointer < strlen($data) ) { if( $bytes_per_pixel == 2 ) // TARGA 16 - ARRRRRGG GGGBBBBB { $low_byte = bin2hex( strrev( substr($data, $pointer, $bytes_per_pixel))); $high_byte = bin2hex( strrev( substr($data, $pointer, $bytes_per_pixel))); $r = base_convert( ($high_byte & 0x7C)>>2, 16, 10); $g = base_convert( (($high_byte & 0x03)<<3) | (($low_byte & 0xE0)>>5), 16, 10); $b = base_convert( $low_byte & 0x1F, 16, 10); imagesetpixel( $image, $x, $y, $r<<16 | $g<<8 | $b); } else if( $bytes_per_pixel == 3 ) // TARGA 24 - RRRRRRRR GGGGGGGG BBBBBBBB { imagesetpixel( $image, $x, $y, base_convert( bin2hex( strrev( substr($data, $pointer, $bytes_per_pixel))), 16, 10)); } else if( $bytes_per_pixel == 4 ) // TARGA 32 - AAAAAAAA RRRRRRRR GGGGGGGG BBBBBBBB { imagesetpixel( $image, $x, $y, base_convert( bin2hex( strrev( substr($data, $pointer, $bytes_per_pixel-1))), 16, 10)); } if(++$x == $width) { $y--; $x=0; } $pointer += $bytes_per_pixel; } return $image; } ?> ---- Server IP: 216.194.113.175 Probable Submitter: 128.97.129.115 ---- X-Spam-Status: No, hits=3.1 required=5.0 tests=DATE_MISSING,FROM_NO_LOWER autolearn=no version=2.64 ---- Manual Page -- http://www.php.net/manual/en/function.imagesetpixel.php Edit -- http://master.php.net/note/edit/64069 Del: integrated -- http://master.php.net/note/delete/64069/integrated Del: useless -- http://master.php.net/note/delete/64069/useless Del: bad code -- http://master.php.net/note/delete/64069/bad+code Del: spam -- http://master.php.net/note/delete/64069/spam Del: non-english -- http://master.php.net/note/delete/64069/non-english Del: in docs -- http://master.php.net/note/delete/64069/in+docs Del: other reasons-- http://master.php.net/note/delete/64069 Reject -- http://master.php.net/note/reject/64069 Search -- http://master.php.net/manage/user-notes.php