+++ /dev/null
-<?php
-/////////////////////////////////////////////////////////////////
-/// getID3() by James Heinrich <info@getid3.org> //
-// available at http://getid3.sourceforge.net //
-// or http://www.getid3.org //
-/////////////////////////////////////////////////////////////////
-// See readme.txt for more details //
-/////////////////////////////////////////////////////////////////
-// //
-// module.graphic.bmp.php //
-// module for analyzing BMP Image files //
-// dependencies: NONE //
-// ///
-/////////////////////////////////////////////////////////////////
-// //
-// Modified for use in phpThumb() - James Heinrich 2004.07.27 //
-// //
-/////////////////////////////////////////////////////////////////
-
-
-class phpthumb_bmp {
-
- function phpthumb_bmp() {
- return true;
- }
-
- function phpthumb_bmp2gd(&$BMPdata, $truecolor=true) {
- $ThisFileInfo = array();
- if ($this->getid3_bmp($BMPdata, $ThisFileInfo, true, true)) {
- $gd = $this->PlotPixelsGD($ThisFileInfo['bmp'], $truecolor);
- return $gd;
- }
- return false;
- }
-
- function phpthumb_bmpfile2gd($filename, $truecolor=true) {
- if ($fp = @fopen($filename, 'rb')) {
- $BMPdata = fread($fp, filesize($filename));
- fclose($fp);
- return $this->phpthumb_bmp2gd($BMPdata, $truecolor);
- }
- return false;
- }
-
- function GD2BMPstring(&$gd_image) {
- $imageX = ImageSX($gd_image);
- $imageY = ImageSY($gd_image);
-
- $BMP = '';
- for ($y = ($imageY - 1); $y >= 0; $y--) {
- $thisline = '';
- for ($x = 0; $x < $imageX; $x++) {
- $argb = phpthumb_functions::GetPixelColor($gd_image, $x, $y);
- $thisline .= chr($argb['blue']).chr($argb['green']).chr($argb['red']);
- }
- while (strlen($thisline) % 4) {
- $thisline .= "\x00";
- }
- $BMP .= $thisline;
- }
-
- $bmpSize = strlen($BMP) + 14 + 40;
- // BITMAPFILEHEADER [14 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_62uq.asp
- $BITMAPFILEHEADER = 'BM'; // WORD bfType;
- $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String($bmpSize, 4); // DWORD bfSize;
- $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String( 0, 2); // WORD bfReserved1;
- $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String( 0, 2); // WORD bfReserved2;
- $BITMAPFILEHEADER .= phpthumb_functions::LittleEndian2String( 54, 4); // DWORD bfOffBits;
-
- // BITMAPINFOHEADER - [40 bytes] http://msdn.microsoft.com/library/en-us/gdi/bitmaps_1rw2.asp
- $BITMAPINFOHEADER = phpthumb_functions::LittleEndian2String( 40, 4); // DWORD biSize;
- $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( $imageX, 4); // LONG biWidth;
- $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( $imageY, 4); // LONG biHeight;
- $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 1, 2); // WORD biPlanes;
- $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 24, 2); // WORD biBitCount;
- $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 0, 4); // DWORD biCompression;
- $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 0, 4); // DWORD biSizeImage;
- $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 2835, 4); // LONG biXPelsPerMeter;
- $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 2835, 4); // LONG biYPelsPerMeter;
- $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 0, 4); // DWORD biClrUsed;
- $BITMAPINFOHEADER .= phpthumb_functions::LittleEndian2String( 0, 4); // DWORD biClrImportant;
-
- return $BITMAPFILEHEADER.$BITMAPINFOHEADER.$BMP;
- }
-
- function getid3_bmp(&$BMPdata, &$ThisFileInfo, $ExtractPalette=false, $ExtractData=false) {
-
- // shortcuts
- $ThisFileInfo['bmp']['header']['raw'] = array();
- $thisfile_bmp = &$ThisFileInfo['bmp'];
- $thisfile_bmp_header = &$thisfile_bmp['header'];
- $thisfile_bmp_header_raw = &$thisfile_bmp_header['raw'];
-
- // BITMAPFILEHEADER [14 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_62uq.asp
- // all versions
- // WORD bfType;
- // DWORD bfSize;
- // WORD bfReserved1;
- // WORD bfReserved2;
- // DWORD bfOffBits;
-
- $offset = 0;
- $overalloffset = 0;
- $BMPheader = substr($BMPdata, $overalloffset, 14 + 40);
- $overalloffset += (14 + 40);
-
- $thisfile_bmp_header_raw['identifier'] = substr($BMPheader, $offset, 2);
- $offset += 2;
-
- if ($thisfile_bmp_header_raw['identifier'] != 'BM') {
- $ThisFileInfo['error'][] = 'Expecting "BM" at offset '.intval(@$ThisFileInfo['avdataoffset']).', found "'.$thisfile_bmp_header_raw['identifier'].'"';
- unset($ThisFileInfo['fileformat']);
- unset($ThisFileInfo['bmp']);
- return false;
- }
-
- $thisfile_bmp_header_raw['filesize'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['reserved1'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2));
- $offset += 2;
- $thisfile_bmp_header_raw['reserved2'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2));
- $offset += 2;
- $thisfile_bmp_header_raw['data_offset'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['header_size'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
-
-
- // check if the hardcoded-to-1 "planes" is at offset 22 or 26
- $planes22 = $this->LittleEndian2Int(substr($BMPheader, 22, 2));
- $planes26 = $this->LittleEndian2Int(substr($BMPheader, 26, 2));
- if (($planes22 == 1) && ($planes26 != 1)) {
- $thisfile_bmp['type_os'] = 'OS/2';
- $thisfile_bmp['type_version'] = 1;
- } elseif (($planes26 == 1) && ($planes22 != 1)) {
- $thisfile_bmp['type_os'] = 'Windows';
- $thisfile_bmp['type_version'] = 1;
- } elseif ($thisfile_bmp_header_raw['header_size'] == 12) {
- $thisfile_bmp['type_os'] = 'OS/2';
- $thisfile_bmp['type_version'] = 1;
- } elseif ($thisfile_bmp_header_raw['header_size'] == 40) {
- $thisfile_bmp['type_os'] = 'Windows';
- $thisfile_bmp['type_version'] = 1;
- } elseif ($thisfile_bmp_header_raw['header_size'] == 84) {
- $thisfile_bmp['type_os'] = 'Windows';
- $thisfile_bmp['type_version'] = 4;
- } elseif ($thisfile_bmp_header_raw['header_size'] == 100) {
- $thisfile_bmp['type_os'] = 'Windows';
- $thisfile_bmp['type_version'] = 5;
- } else {
- $ThisFileInfo['error'][] = 'Unknown BMP subtype (or not a BMP file)';
- unset($ThisFileInfo['fileformat']);
- unset($ThisFileInfo['bmp']);
- return false;
- }
-
- $ThisFileInfo['fileformat'] = 'bmp';
- $ThisFileInfo['video']['dataformat'] = 'bmp';
- $ThisFileInfo['video']['lossless'] = true;
- $ThisFileInfo['video']['pixel_aspect_ratio'] = (float) 1;
-
- if ($thisfile_bmp['type_os'] == 'OS/2') {
-
- // OS/2-format BMP
- // http://netghost.narod.ru/gff/graphics/summary/os2bmp.htm
-
- // DWORD Size; /* Size of this structure in bytes */
- // DWORD Width; /* Bitmap width in pixels */
- // DWORD Height; /* Bitmap height in pixel */
- // WORD NumPlanes; /* Number of bit planes (color depth) */
- // WORD BitsPerPixel; /* Number of bits per pixel per plane */
-
- $thisfile_bmp_header_raw['width'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2));
- $offset += 2;
- $thisfile_bmp_header_raw['height'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2));
- $offset += 2;
- $thisfile_bmp_header_raw['planes'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2));
- $offset += 2;
- $thisfile_bmp_header_raw['bits_per_pixel'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2));
- $offset += 2;
-
- $ThisFileInfo['video']['resolution_x'] = $thisfile_bmp_header_raw['width'];
- $ThisFileInfo['video']['resolution_y'] = $thisfile_bmp_header_raw['height'];
- $ThisFileInfo['video']['codec'] = 'BI_RGB '.$thisfile_bmp_header_raw['bits_per_pixel'].'-bit';
- $ThisFileInfo['video']['bits_per_sample'] = $thisfile_bmp_header_raw['bits_per_pixel'];
-
- if ($thisfile_bmp['type_version'] >= 2) {
- // DWORD Compression; /* Bitmap compression scheme */
- // DWORD ImageDataSize; /* Size of bitmap data in bytes */
- // DWORD XResolution; /* X resolution of display device */
- // DWORD YResolution; /* Y resolution of display device */
- // DWORD ColorsUsed; /* Number of color table indices used */
- // DWORD ColorsImportant; /* Number of important color indices */
- // WORD Units; /* Type of units used to measure resolution */
- // WORD Reserved; /* Pad structure to 4-byte boundary */
- // WORD Recording; /* Recording algorithm */
- // WORD Rendering; /* Halftoning algorithm used */
- // DWORD Size1; /* Reserved for halftoning algorithm use */
- // DWORD Size2; /* Reserved for halftoning algorithm use */
- // DWORD ColorEncoding; /* Color model used in bitmap */
- // DWORD Identifier; /* Reserved for application use */
-
- $thisfile_bmp_header_raw['compression'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['bmp_data_size'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['resolution_h'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['resolution_v'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['colors_used'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['colors_important'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['resolution_units'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2));
- $offset += 2;
- $thisfile_bmp_header_raw['reserved1'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2));
- $offset += 2;
- $thisfile_bmp_header_raw['recording'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2));
- $offset += 2;
- $thisfile_bmp_header_raw['rendering'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2));
- $offset += 2;
- $thisfile_bmp_header_raw['size1'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['size2'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['color_encoding'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['identifier'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
-
- $thisfile_bmp_header['compression'] = $this->BMPcompressionOS2Lookup($thisfile_bmp_header_raw['compression']);
-
- $ThisFileInfo['video']['codec'] = $thisfile_bmp_header['compression'].' '.$thisfile_bmp_header_raw['bits_per_pixel'].'-bit';
- }
-
- } elseif ($thisfile_bmp['type_os'] == 'Windows') {
-
- // Windows-format BMP
-
- // BITMAPINFOHEADER - [40 bytes] http://msdn.microsoft.com/library/en-us/gdi/bitmaps_1rw2.asp
- // all versions
- // DWORD biSize;
- // LONG biWidth;
- // LONG biHeight;
- // WORD biPlanes;
- // WORD biBitCount;
- // DWORD biCompression;
- // DWORD biSizeImage;
- // LONG biXPelsPerMeter;
- // LONG biYPelsPerMeter;
- // DWORD biClrUsed;
- // DWORD biClrImportant;
-
- $thisfile_bmp_header_raw['width'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4), true);
- $offset += 4;
- $thisfile_bmp_header_raw['height'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4), true);
- $offset += 4;
- $thisfile_bmp_header_raw['planes'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2));
- $offset += 2;
- $thisfile_bmp_header_raw['bits_per_pixel'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 2));
- $offset += 2;
- $thisfile_bmp_header_raw['compression'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['bmp_data_size'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['resolution_h'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4), true);
- $offset += 4;
- $thisfile_bmp_header_raw['resolution_v'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4), true);
- $offset += 4;
- $thisfile_bmp_header_raw['colors_used'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['colors_important'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
-
- $thisfile_bmp_header['compression'] = $this->BMPcompressionWindowsLookup($thisfile_bmp_header_raw['compression']);
- $ThisFileInfo['video']['resolution_x'] = $thisfile_bmp_header_raw['width'];
- $ThisFileInfo['video']['resolution_y'] = $thisfile_bmp_header_raw['height'];
- $ThisFileInfo['video']['codec'] = $thisfile_bmp_header['compression'].' '.$thisfile_bmp_header_raw['bits_per_pixel'].'-bit';
- $ThisFileInfo['video']['bits_per_sample'] = $thisfile_bmp_header_raw['bits_per_pixel'];
-
- if (($thisfile_bmp['type_version'] >= 4) || ($thisfile_bmp_header_raw['compression'] == 3)) {
- // should only be v4+, but BMPs with type_version==1 and BI_BITFIELDS compression have been seen
- $BMPheader .= substr($BMPdata, $overalloffset, 44);
- $overalloffset += 44;
-
- // BITMAPV4HEADER - [44 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_2k1e.asp
- // Win95+, WinNT4.0+
- // DWORD bV4RedMask;
- // DWORD bV4GreenMask;
- // DWORD bV4BlueMask;
- // DWORD bV4AlphaMask;
- // DWORD bV4CSType;
- // CIEXYZTRIPLE bV4Endpoints;
- // DWORD bV4GammaRed;
- // DWORD bV4GammaGreen;
- // DWORD bV4GammaBlue;
- $thisfile_bmp_header_raw['red_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['green_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['blue_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['alpha_mask'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['cs_type'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['ciexyz_red'] = substr($BMPheader, $offset, 4);
- $offset += 4;
- $thisfile_bmp_header_raw['ciexyz_green'] = substr($BMPheader, $offset, 4);
- $offset += 4;
- $thisfile_bmp_header_raw['ciexyz_blue'] = substr($BMPheader, $offset, 4);
- $offset += 4;
- $thisfile_bmp_header_raw['gamma_red'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['gamma_green'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['gamma_blue'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
-
- $thisfile_bmp_header['ciexyz_red'] = $this->FixedPoint2_30(strrev($thisfile_bmp_header_raw['ciexyz_red']));
- $thisfile_bmp_header['ciexyz_green'] = $this->FixedPoint2_30(strrev($thisfile_bmp_header_raw['ciexyz_green']));
- $thisfile_bmp_header['ciexyz_blue'] = $this->FixedPoint2_30(strrev($thisfile_bmp_header_raw['ciexyz_blue']));
- }
-
- if ($thisfile_bmp['type_version'] >= 5) {
- $BMPheader .= substr($BMPdata, $overalloffset, 16);
- $overalloffset += 16;
-
- // BITMAPV5HEADER - [16 bytes] - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_7c36.asp
- // Win98+, Win2000+
- // DWORD bV5Intent;
- // DWORD bV5ProfileData;
- // DWORD bV5ProfileSize;
- // DWORD bV5Reserved;
- $thisfile_bmp_header_raw['intent'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['profile_data_offset'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['profile_data_size'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- $thisfile_bmp_header_raw['reserved3'] = $this->LittleEndian2Int(substr($BMPheader, $offset, 4));
- $offset += 4;
- }
-
- } else {
-
- $ThisFileInfo['error'][] = 'Unknown BMP format in header.';
- return false;
-
- }
-
- if ($ExtractPalette || $ExtractData) {
- $PaletteEntries = 0;
- if ($thisfile_bmp_header_raw['bits_per_pixel'] < 16) {
- $PaletteEntries = pow(2, $thisfile_bmp_header_raw['bits_per_pixel']);
- } elseif (isset($thisfile_bmp_header_raw['colors_used']) && ($thisfile_bmp_header_raw['colors_used'] > 0) && ($thisfile_bmp_header_raw['colors_used'] <= 256)) {
- $PaletteEntries = $thisfile_bmp_header_raw['colors_used'];
- }
- if ($PaletteEntries > 0) {
- $BMPpalette = substr($BMPdata, $overalloffset, 4 * $PaletteEntries);
- $overalloffset += 4 * $PaletteEntries;
-
- $paletteoffset = 0;
- for ($i = 0; $i < $PaletteEntries; $i++) {
- // RGBQUAD - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_5f8y.asp
- // BYTE rgbBlue;
- // BYTE rgbGreen;
- // BYTE rgbRed;
- // BYTE rgbReserved;
- $blue = $this->LittleEndian2Int(substr($BMPpalette, $paletteoffset++, 1));
- $green = $this->LittleEndian2Int(substr($BMPpalette, $paletteoffset++, 1));
- $red = $this->LittleEndian2Int(substr($BMPpalette, $paletteoffset++, 1));
- if (($thisfile_bmp['type_os'] == 'OS/2') && ($thisfile_bmp['type_version'] == 1)) {
- // no padding byte
- } else {
- $paletteoffset++; // padding byte
- }
- $thisfile_bmp['palette'][$i] = (($red << 16) | ($green << 8) | ($blue));
- }
- }
- }
-
- if ($ExtractData) {
- $RowByteLength = ceil(($thisfile_bmp_header_raw['width'] * ($thisfile_bmp_header_raw['bits_per_pixel'] / 8)) / 4) * 4; // round up to nearest DWORD boundry
-
- $BMPpixelData = substr($BMPdata, $thisfile_bmp_header_raw['data_offset'], $thisfile_bmp_header_raw['height'] * $RowByteLength);
- $overalloffset = $thisfile_bmp_header_raw['data_offset'] + ($thisfile_bmp_header_raw['height'] * $RowByteLength);
-
- $pixeldataoffset = 0;
- switch (@$thisfile_bmp_header_raw['compression']) {
-
- case 0: // BI_RGB
- switch ($thisfile_bmp_header_raw['bits_per_pixel']) {
- case 1:
- for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) {
- for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col = $col) {
- $paletteindexbyte = ord($BMPpixelData{$pixeldataoffset++});
- for ($i = 7; $i >= 0; $i--) {
- $paletteindex = ($paletteindexbyte & (0x01 << $i)) >> $i;
- $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex];
- $col++;
- }
- }
- while (($pixeldataoffset % 4) != 0) {
- // lines are padded to nearest DWORD
- $pixeldataoffset++;
- }
- }
- break;
-
- case 4:
- for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) {
- for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col = $col) {
- $paletteindexbyte = ord($BMPpixelData{$pixeldataoffset++});
- for ($i = 1; $i >= 0; $i--) {
- $paletteindex = ($paletteindexbyte & (0x0F << (4 * $i))) >> (4 * $i);
- $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex];
- $col++;
- }
- }
- while (($pixeldataoffset % 4) != 0) {
- // lines are padded to nearest DWORD
- $pixeldataoffset++;
- }
- }
- break;
-
- case 8:
- for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) {
- for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) {
- $paletteindex = ord($BMPpixelData{$pixeldataoffset++});
- $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex];
- }
- while (($pixeldataoffset % 4) != 0) {
- // lines are padded to nearest DWORD
- $pixeldataoffset++;
- }
- }
- break;
-
- case 24:
- for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) {
- for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) {
- $thisfile_bmp['data'][$row][$col] = (ord($BMPpixelData{$pixeldataoffset+2}) << 16) | (ord($BMPpixelData{$pixeldataoffset+1}) << 8) | ord($BMPpixelData{$pixeldataoffset});
- $pixeldataoffset += 3;
- }
- while (($pixeldataoffset % 4) != 0) {
- // lines are padded to nearest DWORD
- $pixeldataoffset++;
- }
- }
- break;
-
- case 32:
- for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) {
- for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) {
- $thisfile_bmp['data'][$row][$col] = (ord($BMPpixelData{$pixeldataoffset+3}) << 24) | (ord($BMPpixelData{$pixeldataoffset+2}) << 16) | (ord($BMPpixelData{$pixeldataoffset+1}) << 8) | ord($BMPpixelData{$pixeldataoffset});
- $pixeldataoffset += 4;
- }
- while (($pixeldataoffset % 4) != 0) {
- // lines are padded to nearest DWORD
- $pixeldataoffset++;
- }
- }
- break;
-
- case 16:
- // ?
- break;
-
- default:
- $ThisFileInfo['error'][] = 'Unknown bits-per-pixel value ('.$thisfile_bmp_header_raw['bits_per_pixel'].') - cannot read pixel data';
- break;
- }
- break;
-
-
- case 1: // BI_RLE8 - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_6x0u.asp
- switch ($thisfile_bmp_header_raw['bits_per_pixel']) {
- case 8:
- $pixelcounter = 0;
- while ($pixeldataoffset < strlen($BMPpixelData)) {
- $firstbyte = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1));
- $secondbyte = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1));
- if ($firstbyte == 0) {
-
- // escaped/absolute mode - the first byte of the pair can be set to zero to
- // indicate an escape character that denotes the end of a line, the end of
- // a bitmap, or a delta, depending on the value of the second byte.
- switch ($secondbyte) {
- case 0:
- // end of line
- // no need for special processing, just ignore
- break;
-
- case 1:
- // end of bitmap
- $pixeldataoffset = strlen($BMPpixelData); // force to exit loop just in case
- break;
-
- case 2:
- // delta - The 2 bytes following the escape contain unsigned values
- // indicating the horizontal and vertical offsets of the next pixel
- // from the current position.
- $colincrement = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1));
- $rowincrement = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1));
- $col = ($pixelcounter % $thisfile_bmp_header_raw['width']) + $colincrement;
- $row = ($thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width'])) - $rowincrement;
- $pixelcounter = ($row * $thisfile_bmp_header_raw['width']) + $col;
- break;
-
- default:
- // In absolute mode, the first byte is zero and the second byte is a
- // value in the range 03H through FFH. The second byte represents the
- // number of bytes that follow, each of which contains the color index
- // of a single pixel. Each run must be aligned on a word boundary.
- for ($i = 0; $i < $secondbyte; $i++) {
- $paletteindex = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1));
- $col = $pixelcounter % $thisfile_bmp_header_raw['width'];
- $row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']);
- $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex];
- $pixelcounter++;
- }
- while (($pixeldataoffset % 2) != 0) {
- // Each run must be aligned on a word boundary.
- $pixeldataoffset++;
- }
- break;
- }
-
- } else {
-
- // encoded mode - the first byte specifies the number of consecutive pixels
- // to be drawn using the color index contained in the second byte.
- for ($i = 0; $i < $firstbyte; $i++) {
- $col = $pixelcounter % $thisfile_bmp_header_raw['width'];
- $row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']);
- $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$secondbyte];
- $pixelcounter++;
- }
-
- }
- }
- break;
-
- default:
- $ThisFileInfo['error'][] = 'Unknown bits-per-pixel value ('.$thisfile_bmp_header_raw['bits_per_pixel'].') - cannot read pixel data';
- break;
- }
- break;
-
-
-
- case 2: // BI_RLE4 - http://msdn.microsoft.com/library/en-us/gdi/bitmaps_6x0u.asp
- switch ($thisfile_bmp_header_raw['bits_per_pixel']) {
- case 4:
- $pixelcounter = 0;
- while ($pixeldataoffset < strlen($BMPpixelData)) {
- $firstbyte = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1));
- $secondbyte = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1));
- if ($firstbyte == 0) {
-
- // escaped/absolute mode - the first byte of the pair can be set to zero to
- // indicate an escape character that denotes the end of a line, the end of
- // a bitmap, or a delta, depending on the value of the second byte.
- switch ($secondbyte) {
- case 0:
- // end of line
- // no need for special processing, just ignore
- break;
-
- case 1:
- // end of bitmap
- $pixeldataoffset = strlen($BMPpixelData); // force to exit loop just in case
- break;
-
- case 2:
- // delta - The 2 bytes following the escape contain unsigned values
- // indicating the horizontal and vertical offsets of the next pixel
- // from the current position.
- $colincrement = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1));
- $rowincrement = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1));
- $col = ($pixelcounter % $thisfile_bmp_header_raw['width']) + $colincrement;
- $row = ($thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width'])) - $rowincrement;
- $pixelcounter = ($row * $thisfile_bmp_header_raw['width']) + $col;
- break;
-
- default:
- // In absolute mode, the first byte is zero. The second byte contains the number
- // of color indexes that follow. Subsequent bytes contain color indexes in their
- // high- and low-order 4 bits, one color index for each pixel. In absolute mode,
- // each run must be aligned on a word boundary.
- unset($paletteindexes);
- for ($i = 0; $i < ceil($secondbyte / 2); $i++) {
- $paletteindexbyte = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset++, 1));
- $paletteindexes[] = ($paletteindexbyte & 0xF0) >> 4;
- $paletteindexes[] = ($paletteindexbyte & 0x0F);
- }
- while (($pixeldataoffset % 2) != 0) {
- // Each run must be aligned on a word boundary.
- $pixeldataoffset++;
- }
-
- foreach ($paletteindexes as $dummy => $paletteindex) {
- $col = $pixelcounter % $thisfile_bmp_header_raw['width'];
- $row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']);
- $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindex];
- $pixelcounter++;
- }
- break;
- }
-
- } else {
-
- // encoded mode - the first byte of the pair contains the number of pixels to be
- // drawn using the color indexes in the second byte. The second byte contains two
- // color indexes, one in its high-order 4 bits and one in its low-order 4 bits.
- // The first of the pixels is drawn using the color specified by the high-order
- // 4 bits, the second is drawn using the color in the low-order 4 bits, the third
- // is drawn using the color in the high-order 4 bits, and so on, until all the
- // pixels specified by the first byte have been drawn.
- $paletteindexes[0] = ($secondbyte & 0xF0) >> 4;
- $paletteindexes[1] = ($secondbyte & 0x0F);
- for ($i = 0; $i < $firstbyte; $i++) {
- $col = $pixelcounter % $thisfile_bmp_header_raw['width'];
- $row = $thisfile_bmp_header_raw['height'] - 1 - (($pixelcounter - $col) / $thisfile_bmp_header_raw['width']);
- $thisfile_bmp['data'][$row][$col] = $thisfile_bmp['palette'][$paletteindexes[($i % 2)]];
- $pixelcounter++;
- }
-
- }
- }
- break;
-
- default:
- $ThisFileInfo['error'][] = 'Unknown bits-per-pixel value ('.$thisfile_bmp_header_raw['bits_per_pixel'].') - cannot read pixel data';
- break;
- }
- break;
-
-
- case 3: // BI_BITFIELDS
- switch ($thisfile_bmp_header_raw['bits_per_pixel']) {
- case 16:
- case 32:
- $redshift = 0;
- $greenshift = 0;
- $blueshift = 0;
- if (!$thisfile_bmp_header_raw['red_mask'] || !$thisfile_bmp_header_raw['green_mask'] || !$thisfile_bmp_header_raw['blue_mask']) {
- $ThisFileInfo['error'][] = 'missing $thisfile_bmp_header_raw[(red|green|blue)_mask]';
- return false;
- }
- while ((($thisfile_bmp_header_raw['red_mask'] >> $redshift) & 0x01) == 0) {
- $redshift++;
- }
- while ((($thisfile_bmp_header_raw['green_mask'] >> $greenshift) & 0x01) == 0) {
- $greenshift++;
- }
- while ((($thisfile_bmp_header_raw['blue_mask'] >> $blueshift) & 0x01) == 0) {
- $blueshift++;
- }
- for ($row = ($thisfile_bmp_header_raw['height'] - 1); $row >= 0; $row--) {
- for ($col = 0; $col < $thisfile_bmp_header_raw['width']; $col++) {
- $pixelvalue = $this->LittleEndian2Int(substr($BMPpixelData, $pixeldataoffset, $thisfile_bmp_header_raw['bits_per_pixel'] / 8));
- $pixeldataoffset += $thisfile_bmp_header_raw['bits_per_pixel'] / 8;
-
- $red = intval(round(((($pixelvalue & $thisfile_bmp_header_raw['red_mask']) >> $redshift) / ($thisfile_bmp_header_raw['red_mask'] >> $redshift)) * 255));
- $green = intval(round(((($pixelvalue & $thisfile_bmp_header_raw['green_mask']) >> $greenshift) / ($thisfile_bmp_header_raw['green_mask'] >> $greenshift)) * 255));
- $blue = intval(round(((($pixelvalue & $thisfile_bmp_header_raw['blue_mask']) >> $blueshift) / ($thisfile_bmp_header_raw['blue_mask'] >> $blueshift)) * 255));
- $thisfile_bmp['data'][$row][$col] = (($red << 16) | ($green << 8) | ($blue));
- }
- while (($pixeldataoffset % 4) != 0) {
- // lines are padded to nearest DWORD
- $pixeldataoffset++;
- }
- }
- break;
-
- default:
- $ThisFileInfo['error'][] = 'Unknown bits-per-pixel value ('.$thisfile_bmp_header_raw['bits_per_pixel'].') - cannot read pixel data';
- break;
- }
- break;
-
-
- default: // unhandled compression type
- $ThisFileInfo['error'][] = 'Unknown/unhandled compression type value ('.$thisfile_bmp_header_raw['compression'].') - cannot decompress pixel data';
- break;
- }
- }
-
- return true;
- }
-
- function IntColor2RGB($color) {
- $red = ($color & 0x00FF0000) >> 16;
- $green = ($color & 0x0000FF00) >> 8;
- $blue = ($color & 0x000000FF);
- return array($red, $green, $blue);
- }
-
- function PlotPixelsGD(&$BMPdata, $truecolor=true) {
- $imagewidth = $BMPdata['header']['raw']['width'];
- $imageheight = $BMPdata['header']['raw']['height'];
-
- if ($truecolor) {
-
- $gd = @ImageCreateTrueColor($imagewidth, $imageheight);
-
- } else {
-
- $gd = @ImageCreate($imagewidth, $imageheight);
- if (!empty($BMPdata['palette'])) {
- // create GD palette from BMP palette
- foreach ($BMPdata['palette'] as $dummy => $color) {
- list($r, $g, $b) = $this->IntColor2RGB($color);
- ImageColorAllocate($gd, $r, $g, $b);
- }
- } else {
- // create 216-color websafe palette
- for ($r = 0x00; $r <= 0xFF; $r += 0x33) {
- for ($g = 0x00; $g <= 0xFF; $g += 0x33) {
- for ($b = 0x00; $b <= 0xFF; $b += 0x33) {
- ImageColorAllocate($gd, $r, $g, $b);
- }
- }
- }
- }
-
- }
- if (!is_resource($gd)) {
- return false;
- }
-
- foreach ($BMPdata['data'] as $row => $colarray) {
- @set_time_limit(30);
- foreach ($colarray as $col => $color) {
- list($red, $green, $blue) = $this->IntColor2RGB($color);
- if ($truecolor) {
- $pixelcolor = ImageColorAllocate($gd, $red, $green, $blue);
- } else {
- $pixelcolor = ImageColorClosest($gd, $red, $green, $blue);
- }
- ImageSetPixel($gd, $col, $row, $pixelcolor);
- }
- }
- return $gd;
- }
-
- function PlotBMP(&$BMPinfo) {
- $starttime = time();
- if (!isset($BMPinfo['bmp']['data']) || !is_array($BMPinfo['bmp']['data'])) {
- echo 'ERROR: no pixel data<BR>';
- return false;
- }
- set_time_limit(intval(round($BMPinfo['resolution_x'] * $BMPinfo['resolution_y'] / 10000)));
- $im = $this->PlotPixelsGD($BMPinfo['bmp']);
- if (headers_sent()) {
- echo 'plotted '.($BMPinfo['resolution_x'] * $BMPinfo['resolution_y']).' pixels in '.(time() - $starttime).' seconds<BR>';
- ImageDestroy($im);
- exit;
- } else {
- header('Content-Type: image/png');
- ImagePNG($im);
- ImageDestroy($im);
- return true;
- }
- return false;
- }
-
- function BMPcompressionWindowsLookup($compressionid) {
- static $BMPcompressionWindowsLookup = array(
- 0 => 'BI_RGB',
- 1 => 'BI_RLE8',
- 2 => 'BI_RLE4',
- 3 => 'BI_BITFIELDS',
- 4 => 'BI_JPEG',
- 5 => 'BI_PNG'
- );
- return (isset($BMPcompressionWindowsLookup[$compressionid]) ? $BMPcompressionWindowsLookup[$compressionid] : 'invalid');
- }
-
- function BMPcompressionOS2Lookup($compressionid) {
- static $BMPcompressionOS2Lookup = array(
- 0 => 'BI_RGB',
- 1 => 'BI_RLE8',
- 2 => 'BI_RLE4',
- 3 => 'Huffman 1D',
- 4 => 'BI_RLE24',
- );
- return (isset($BMPcompressionOS2Lookup[$compressionid]) ? $BMPcompressionOS2Lookup[$compressionid] : 'invalid');
- }
-
-
- // from getid3.lib.php
-
- function trunc($floatnumber) {
- // truncates a floating-point number at the decimal point
- // returns int (if possible, otherwise float)
- if ($floatnumber >= 1) {
- $truncatednumber = floor($floatnumber);
- } elseif ($floatnumber <= -1) {
- $truncatednumber = ceil($floatnumber);
- } else {
- $truncatednumber = 0;
- }
- if ($truncatednumber <= 1073741824) { // 2^30
- $truncatednumber = (int) $truncatednumber;
- }
- return $truncatednumber;
- }
-
- function LittleEndian2Int($byteword) {
- $intvalue = 0;
- $byteword = strrev($byteword);
- $bytewordlen = strlen($byteword);
- for ($i = 0; $i < $bytewordlen; $i++) {
- $intvalue += ord($byteword{$i}) * pow(256, ($bytewordlen - 1 - $i));
- }
- return $intvalue;
- }
-
- function BigEndian2Int($byteword) {
- return $this->LittleEndian2Int(strrev($byteword));
- }
-
- function BigEndian2Bin($byteword) {
- $binvalue = '';
- $bytewordlen = strlen($byteword);
- for ($i = 0; $i < $bytewordlen; $i++) {
- $binvalue .= str_pad(decbin(ord($byteword{$i})), 8, '0', STR_PAD_LEFT);
- }
- return $binvalue;
- }
-
- function FixedPoint2_30($rawdata) {
- $binarystring = $this->BigEndian2Bin($rawdata);
- return $this->Bin2Dec(substr($binarystring, 0, 2)) + (float) ($this->Bin2Dec(substr($binarystring, 2, 30)) / 1073741824);
- }
-
- function Bin2Dec($binstring, $signed=false) {
- $signmult = 1;
- if ($signed) {
- if ($binstring{0} == '1') {
- $signmult = -1;
- }
- $binstring = substr($binstring, 1);
- }
- $decvalue = 0;
- for ($i = 0; $i < strlen($binstring); $i++) {
- $decvalue += ((int) substr($binstring, strlen($binstring) - $i - 1, 1)) * pow(2, $i);
- }
- return $this->CastAsInt($decvalue * $signmult);
- }
-
- function CastAsInt($floatnum) {
- // convert to float if not already
- $floatnum = (float) $floatnum;
-
- // convert a float to type int, only if possible
- if ($this->trunc($floatnum) == $floatnum) {
- // it's not floating point
- if ($floatnum <= 1073741824) { // 2^30
- // it's within int range
- $floatnum = (int) $floatnum;
- }
- }
- return $floatnum;
- }
-
-}
-
-?>
\ No newline at end of file
projects / atutor.git / blobdiff
