author seabld
Sun, 29 Apr 2012 01:09:18 -0700
changeset 89101 783aeb1dd7ede7ae83b32fec0fe2336789a721e9
parent 87852 9cf740464cd01a801e50b1e22f1156756765f2bf
child 98983 f4157e8c410708d76703f19e4dfb61859bfe32d8
permissions -rw-r--r--
Added tag SEAMONKEY_2_9_1_BUILD1 for changeset FIREFOX_12_0_BUILD1. CLOSED TREE a=release

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 * The Original Code is bitmap header definitions.
 * The Initial Developer of the Original Code is
 * Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2011
 * the Initial Developer. All Rights Reserved.
 * Contributor(s):
 *   Brian R. Bondy <>
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 * ***** END LICENSE BLOCK ***** */


namespace mozilla {
  namespace image {

    struct BMPFILEHEADER {
      char signature[2]; // String "BM"
      PRUint32 filesize;
      PRInt32 reserved; // Zero
      PRUint32 dataoffset; // Offset to raster data

      PRUint32 bihsize;

// The length of the bitmap file header as defined in the BMP spec.
#define BFH_LENGTH 14 
// Internally we store the bitmap file header with an additional 4 bytes which
// is used to store the bitmap information header size.


#define OS2_BIH_LENGTH 12 // This is the real BIH size (as contained in the bihsize field of BMPFILEHEADER)
#define WIN_BIH_LENGTH 40 // This is the real BIH size (as contained in the bihsize field of BMPFILEHEADER)


    struct BMPINFOHEADER {
      PRInt32 width; // Uint16 in OS/2 BMPs
      PRInt32 height; // Uint16 in OS/2 BMPs
      PRUint16 planes; // =1
      PRUint16 bpp; // Bits per pixel.
      // The rest of the header is not available in OS/2 BMP Files
      PRUint32 compression; // 0=no compression 1=8bit RLE 2=4bit RLE
      PRUint32 image_size; // (compressed) image size. Can be 0 if compression==0
      PRUint32 xppm; // Pixels per meter, horizontal
      PRUint32 yppm; // Pixels per meter, vertical
      PRUint32 colors; // Used Colors
      PRUint32 important_colors; // Number of important colors. 0=all

    struct colorTable {
      PRUint8 red;
      PRUint8 green;
      PRUint8 blue;

    struct bitFields {
      PRUint32 red;
      PRUint32 green;
      PRUint32 blue;
      PRUint8 redLeftShift;
      PRUint8 redRightShift;
      PRUint8 greenLeftShift;
      PRUint8 greenRightShift;
      PRUint8 blueLeftShift;
      PRUint8 blueRightShift;

  } // namespace image
} // namespace mozilla

#define BITFIELD_LENGTH 12 // Length of the bitfields structure in the bmp file
#define USE_RGB

// BMPINFOHEADER.compression defines
#ifndef BI_RGB
#define BI_RGB 0
#ifndef BI_RLE8
#define BI_RLE8 1
#ifndef BI_RLE4
#define BI_RLE4 2
#define BI_BITFIELDS 3
// BI_ALPHABITFIELDS  means no compression and specifies alpha bits
// valid only for 32bpp and 16bpp

// RLE Escape codes
#define RLE_ESCAPE       0
#define RLE_ESCAPE_EOL   0
#define RLE_ESCAPE_EOF   1

/// enums for mState
enum ERLEState {
  eRLEStateNeedYDelta,    ///< mStateData will hold x delta
  eRLEStateAbsoluteMode,  ///< mStateData will hold count of existing data to read
  eRLEStateAbsoluteModePadded ///< As above, but another byte of data has to be read as padding