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@ -1,29 +1,65 @@ |
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/* png.h - header file for PNG reference library
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* |
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* libpng version 1.6.35, July 15, 2018 |
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* libpng version 1.6.36 - December 1, 2018 |
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* |
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* Copyright (c) 2018 Cosmin Truta |
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* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson |
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* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) |
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* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) |
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* Copyright (c) 1996-1997 Andreas Dilger |
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* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc. |
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* |
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* This code is released under the libpng license (See LICENSE, below) |
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* This code is released under the libpng license. (See LICENSE, below.) |
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* |
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* Authors and maintainers: |
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* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat |
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* libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger |
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* libpng versions 0.97, January 1998, through 1.6.35, July 15, 2018: |
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* libpng versions 0.97, January 1998, through 1.6.35, July 2018: |
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* Glenn Randers-Pehrson. |
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* libpng version 1.6.36, December 1, 2018: Cosmin Truta |
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* See also "Contributing Authors", below. |
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*/ |
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/*
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* COPYRIGHT NOTICE, DISCLAIMER, and LICENSE: |
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* COPYRIGHT NOTICE, DISCLAIMER, and LICENSE |
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* ========================================= |
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* |
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* PNG Reference Library License version 2 |
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* --------------------------------------- |
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* |
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* * Copyright (c) 1995-2018 The PNG Reference Library Authors. |
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* * Copyright (c) 2018 Cosmin Truta. |
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* * Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson. |
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* * Copyright (c) 1996-1997 Andreas Dilger. |
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* * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc. |
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* |
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* The software is supplied "as is", without warranty of any kind, |
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* express or implied, including, without limitation, the warranties |
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* of merchantability, fitness for a particular purpose, title, and |
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* non-infringement. In no even shall the Copyright owners, or |
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* anyone distributing the software, be liable for any damages or |
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* other liability, whether in contract, tort or otherwise, arising |
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* from, out of, or in connection with the software, or the use or |
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* other dealings in the software, even if advised of the possibility |
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* of such damage. |
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* |
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* Permission is hereby granted to use, copy, modify, and distribute |
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* this software, or portions hereof, for any purpose, without fee, |
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* subject to the following restrictions: |
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* |
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* If you modify libpng you may insert additional notices immediately following |
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* this sentence. |
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* 1. The origin of this software must not be misrepresented; you |
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* must not claim that you wrote the original software. If you |
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* use this software in a product, an acknowledgment in the product |
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* documentation would be appreciated, but is not required. |
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* |
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* This code is released under the libpng license. |
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* 2. Altered source versions must be plainly marked as such, and must |
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* not be misrepresented as being the original software. |
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* |
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* 3. This Copyright notice may not be removed or altered from any |
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* source or altered source distribution. |
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* |
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* |
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* PNG Reference Library License version 1 (for libpng 0.5 through 1.6.35) |
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* ----------------------------------------------------------------------- |
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* |
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* libpng versions 1.0.7, July 1, 2000 through 1.6.35, July 15, 2018 are |
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* Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson, are |
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@ -31,38 +67,38 @@ |
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* disclaimer and license as libpng-1.0.6 with the following individuals |
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* added to the list of Contributing Authors: |
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* |
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* Simon-Pierre Cadieux |
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* Eric S. Raymond |
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* Mans Rullgard |
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* Cosmin Truta |
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* Gilles Vollant |
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* James Yu |
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* Mandar Sahastrabuddhe |
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* Google Inc. |
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* Vadim Barkov |
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* Simon-Pierre Cadieux |
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* Eric S. Raymond |
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* Mans Rullgard |
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* Cosmin Truta |
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* Gilles Vollant |
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* James Yu |
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* Mandar Sahastrabuddhe |
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* Google Inc. |
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* Vadim Barkov |
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* |
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* and with the following additions to the disclaimer: |
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* |
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* There is no warranty against interference with your enjoyment of the |
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* library or against infringement. There is no warranty that our |
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* efforts or the library will fulfill any of your particular purposes |
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* or needs. This library is provided with all faults, and the entire |
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* risk of satisfactory quality, performance, accuracy, and effort is with |
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* the user. |
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* There is no warranty against interference with your enjoyment of |
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* the library or against infringement. There is no warranty that our |
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* efforts or the library will fulfill any of your particular purposes |
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* or needs. This library is provided with all faults, and the entire |
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* risk of satisfactory quality, performance, accuracy, and effort is |
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* with the user. |
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* |
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* Some files in the "contrib" directory and some configure-generated |
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* files that are distributed with libpng have other copyright owners and |
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* files that are distributed with libpng have other copyright owners, and |
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* are released under other open source licenses. |
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* |
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* libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are |
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* Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from |
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* libpng-0.96, and are distributed according to the same disclaimer and |
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* license as libpng-0.96, with the following individuals added to the list |
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* of Contributing Authors: |
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* license as libpng-0.96, with the following individuals added to the |
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* list of Contributing Authors: |
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* |
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* Tom Lane |
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* Glenn Randers-Pehrson |
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* Willem van Schaik |
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* Tom Lane |
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* Glenn Randers-Pehrson |
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* Willem van Schaik |
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* |
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* libpng versions 0.89, June 1996, through 0.96, May 1997, are |
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* Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88, |
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@ -70,14 +106,14 @@ |
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* libpng-0.88, with the following individuals added to the list of |
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* Contributing Authors: |
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* |
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* John Bowler |
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* Kevin Bracey |
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* Sam Bushell |
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* Magnus Holmgren |
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* Greg Roelofs |
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* Tom Tanner |
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* John Bowler |
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* Kevin Bracey |
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* Sam Bushell |
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* Magnus Holmgren |
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* Greg Roelofs |
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* Tom Tanner |
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* |
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* Some files in the "scripts" directory have other copyright owners |
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* Some files in the "scripts" directory have other copyright owners, |
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* but are released under this license. |
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* |
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* libpng versions 0.5, May 1995, through 0.88, January 1996, are |
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@ -86,62 +122,49 @@ |
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* For the purposes of this copyright and license, "Contributing Authors" |
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* is defined as the following set of individuals: |
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* |
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* Andreas Dilger |
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* Dave Martindale |
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* Guy Eric Schalnat |
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* Paul Schmidt |
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* Tim Wegner |
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* |
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* The PNG Reference Library is supplied "AS IS". The Contributing Authors |
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* and Group 42, Inc. disclaim all warranties, expressed or implied, |
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* including, without limitation, the warranties of merchantability and of |
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* fitness for any purpose. The Contributing Authors and Group 42, Inc. |
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* assume no liability for direct, indirect, incidental, special, exemplary, |
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* or consequential damages, which may result from the use of the PNG |
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* Reference Library, even if advised of the possibility of such damage. |
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* Andreas Dilger |
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* Dave Martindale |
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* Guy Eric Schalnat |
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* Paul Schmidt |
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* Tim Wegner |
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* |
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* The PNG Reference Library is supplied "AS IS". The Contributing |
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* Authors and Group 42, Inc. disclaim all warranties, expressed or |
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* implied, including, without limitation, the warranties of |
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* merchantability and of fitness for any purpose. The Contributing |
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* Authors and Group 42, Inc. assume no liability for direct, indirect, |
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|
* incidental, special, exemplary, or consequential damages, which may |
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* result from the use of the PNG Reference Library, even if advised of |
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* the possibility of such damage. |
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* |
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|
* Permission is hereby granted to use, copy, modify, and distribute this |
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|
* source code, or portions hereof, for any purpose, without fee, subject |
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|
* to the following restrictions: |
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|
* |
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|
* 1. The origin of this source code must not be misrepresented. |
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* 1. The origin of this source code must not be misrepresented. |
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* |
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* 2. Altered versions must be plainly marked as such and must not |
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* be misrepresented as being the original source. |
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* 2. Altered versions must be plainly marked as such and must not |
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* be misrepresented as being the original source. |
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* |
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* 3. This Copyright notice may not be removed or altered from any |
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* source or altered source distribution. |
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* 3. This Copyright notice may not be removed or altered from any |
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* source or altered source distribution. |
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* |
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* The Contributing Authors and Group 42, Inc. specifically permit, without |
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* fee, and encourage the use of this source code as a component to |
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* supporting the PNG file format in commercial products. If you use this |
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* source code in a product, acknowledgment is not required but would be |
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* appreciated. |
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* The Contributing Authors and Group 42, Inc. specifically permit, |
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* without fee, and encourage the use of this source code as a component |
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* to supporting the PNG file format in commercial products. If you use |
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* this source code in a product, acknowledgment is not required but would |
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* be appreciated. |
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* |
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* END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE. |
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* |
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* TRADEMARK: |
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* TRADEMARK |
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* ========= |
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* |
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* The name "libpng" has not been registered by the Copyright owner |
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* The name "libpng" has not been registered by the Copyright owners |
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* as a trademark in any jurisdiction. However, because libpng has |
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* been distributed and maintained world-wide, continually since 1995, |
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* the Copyright owner claims "common-law trademark protection" in any |
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* the Copyright owners claim "common-law trademark protection" in any |
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* jurisdiction where common-law trademark is recognized. |
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* |
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* OSI CERTIFICATION: |
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* |
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* Libpng is OSI Certified Open Source Software. OSI Certified Open Source is |
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* a certification mark of the Open Source Initiative. OSI has not addressed |
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* the additional disclaimers inserted at version 1.0.7. |
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* |
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* EXPORT CONTROL: |
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* |
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* The Copyright owner believes that the Export Control Classification |
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* Number (ECCN) for libpng is EAR99, which means not subject to export |
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* controls or International Traffic in Arms Regulations (ITAR) because |
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* it is open source, publicly available software, that does not contain |
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* any encryption software. See the EAR, paragraphs 734.3(b)(3) and |
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* 734.7(b). |
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*/ |
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/*
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@ -207,23 +230,25 @@ |
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* 1.0.7rc1-2 1 10007 2.1.0.7rc1-2 (binary compatible) |
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* 1.0.7 1 10007 (still compatible) |
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* ... |
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* 1.0.19 10 10019 10.so.0.19[.0] |
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* 1.0.69 10 10069 10.so.0.69[.0] |
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* ... |
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* 1.2.59 13 10257 12.so.0.59[.0] |
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* 1.2.59 13 10259 12.so.0.59[.0] |
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* ... |
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* 1.5.30 15 10527 15.so.15.30[.0] |
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* 1.4.20 14 10420 14.so.0.20[.0] |
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* ... |
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* 1.6.35 16 10635 16.so.16.35[.0] |
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* |
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* Henceforth the source version will match the shared-library major |
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* and minor numbers; the shared-library major version number will be |
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* used for changes in backward compatibility, as it is intended. The |
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* PNG_LIBPNG_VER macro, which is not used within libpng but is available |
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* for applications, is an unsigned integer of the form xyyzz corresponding |
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* to the source version x.y.z (leading zeros in y and z). Beta versions |
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* were given the previous public release number plus a letter, until |
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* version 1.0.6j; from then on they were given the upcoming public |
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* release number plus "betaNN" or "rcNN". |
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* 1.5.30 15 10530 15.so.15.30[.0] |
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* ... |
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* 1.6.36 16 10636 16.so.16.36[.0] |
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* |
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* Henceforth the source version will match the shared-library major and |
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* minor numbers; the shared-library major version number will be used for |
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* changes in backward compatibility, as it is intended. |
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* The PNG_LIBPNG_VER macro, which is not used within libpng but is |
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* available for applications, is an unsigned integer of the form XYYZZ |
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* corresponding to the source version X.Y.Z (leading zeros in Y and Z). |
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* Beta versions were given the previous public release number plus a |
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* letter, until version 1.0.6j; from then on they were given the upcoming |
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* public release number plus "betaNN" or "rcNN". |
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* |
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* Binary incompatibility exists only when applications make direct access |
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* to the info_ptr or png_ptr members through png.h, and the compiled |
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@ -233,65 +258,8 @@ |
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* in binary compatibility (e.g., when a new feature is added). |
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* |
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* See libpng.txt or libpng.3 for more information. The PNG specification |
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* is available as a W3C Recommendation and as an ISO Specification, |
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* <https://www.w3.org/TR/2003/REC-PNG-20031110/
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*/ |
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/*
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* Y2K compliance in libpng: |
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* ========================= |
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* |
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|
* July 15, 2018 |
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* |
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* Since the PNG Development group is an ad-hoc body, we can't make |
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* an official declaration. |
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* |
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* This is your unofficial assurance that libpng from version 0.71 and |
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* upward through 1.6.35 are Y2K compliant. It is my belief that |
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* earlier versions were also Y2K compliant. |
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* |
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* Libpng only has two year fields. One is a 2-byte unsigned integer |
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* that will hold years up to 65535. The other, which is deprecated, |
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* holds the date in text format, and will hold years up to 9999. |
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* |
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* The integer is |
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* "png_uint_16 year" in png_time_struct. |
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* |
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* The string is |
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* "char time_buffer[29]" in png_struct. This is no longer used |
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* in libpng-1.6.x and will be removed from libpng-1.7.0. |
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* |
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* There are seven time-related functions: |
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* png.c: png_convert_to_rfc_1123_buffer() in png.c |
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* (formerly png_convert_to_rfc_1123() prior to libpng-1.5.x and |
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* png_convert_to_rfc_1152() in error prior to libpng-0.98) |
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* png_convert_from_struct_tm() in pngwrite.c, called in pngwrite.c |
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* png_convert_from_time_t() in pngwrite.c |
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* png_get_tIME() in pngget.c |
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* png_handle_tIME() in pngrutil.c, called in pngread.c |
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* png_set_tIME() in pngset.c |
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* png_write_tIME() in pngwutil.c, called in pngwrite.c |
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* |
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* All handle dates properly in a Y2K environment. The |
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* png_convert_from_time_t() function calls gmtime() to convert from system |
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* clock time, which returns (year - 1900), which we properly convert to |
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* the full 4-digit year. There is a possibility that libpng applications |
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* are not passing 4-digit years into the png_convert_to_rfc_1123_buffer() |
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* function, or that they are incorrectly passing only a 2-digit year |
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* instead of "year - 1900" into the png_convert_from_struct_tm() function, |
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* but this is not under our control. The libpng documentation has always |
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* stated that it works with 4-digit years, and the APIs have been |
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* documented as such. |
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* |
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* The tIME chunk itself is also Y2K compliant. It uses a 2-byte unsigned |
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* integer to hold the year, and can hold years as large as 65535. |
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* |
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* zlib, upon which libpng depends, is also Y2K compliant. It contains |
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* no date-related code. |
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* |
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* Glenn Randers-Pehrson |
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* libpng maintainer |
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* PNG Development Group |
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* is available as a W3C Recommendation and as an ISO/IEC Standard; see |
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* <https://www.w3.org/TR/2003/REC-PNG-20031110/>
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*/ |
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#ifndef PNG_H |
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@ -309,8 +277,8 @@ |
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*/ |
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/* Version information for png.h - this should match the version in png.c */ |
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#define PNG_LIBPNG_VER_STRING "1.6.35" |
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#define PNG_HEADER_VERSION_STRING " libpng version 1.6.35 - July 15, 2018\n" |
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#define PNG_LIBPNG_VER_STRING "1.6.36" |
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#define PNG_HEADER_VERSION_STRING " libpng version 1.6.36 - December 1, 2018\n" |
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#define PNG_LIBPNG_VER_SONUM 16 |
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#define PNG_LIBPNG_VER_DLLNUM 16 |
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@ -318,13 +286,13 @@ |
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/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */ |
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#define PNG_LIBPNG_VER_MAJOR 1 |
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#define PNG_LIBPNG_VER_MINOR 6 |
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#define PNG_LIBPNG_VER_RELEASE 35 |
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#define PNG_LIBPNG_VER_RELEASE 36 |
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/* This should match the numeric part of the final component of
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* PNG_LIBPNG_VER_STRING, omitting any leading zero: |
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*/ |
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#define PNG_LIBPNG_VER_BUILD 02 |
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#define PNG_LIBPNG_VER_BUILD 0 |
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/* Release Status */ |
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#define PNG_LIBPNG_BUILD_ALPHA 1 |
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@ -341,15 +309,16 @@ |
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#define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with |
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PNG_LIBPNG_BUILD_PRIVATE */ |
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#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_BETA |
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#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE |
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/* Careful here. At one time, Guy wanted to use 082, but that would be octal.
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* We must not include leading zeros. |
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* Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only |
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* version 1.0.0 was mis-numbered 100 instead of 10000). From |
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* version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release |
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/* Careful here. At one time, Guy wanted to use 082, but that
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* would be octal. We must not include leading zeros. |
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* Versions 0.7 through 1.0.0 were in the range 0 to 100 here |
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* (only version 1.0.0 was mis-numbered 100 instead of 10000). |
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* From version 1.0.1 it is: |
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* XXYYZZ, where XX=major, YY=minor, ZZ=release |
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*/ |
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#define PNG_LIBPNG_VER 10635 /* 1.6.35 */ |
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#define PNG_LIBPNG_VER 10636 /* 1.6.36 */ |
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/* Library configuration: these options cannot be changed after
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* the library has been built. |
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@ -459,7 +428,7 @@ extern "C" { |
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/* This triggers a compiler error in png.c, if png.c and png.h
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* do not agree upon the version number. |
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*/ |
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typedef char* png_libpng_version_1_6_35; |
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typedef char* png_libpng_version_1_6_36; |
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/* Basic control structions. Read libpng-manual.txt or libpng.3 for more info.
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* |
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@ -2013,12 +1982,12 @@ PNG_FIXED_EXPORT(233, void, png_set_cHRM_XYZ_fixed, (png_const_structrp png_ptr, |
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PNG_EXPORT(246, png_uint_32, png_get_eXIf, (png_const_structrp png_ptr, |
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png_inforp info_ptr, png_bytep *exif)); |
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PNG_EXPORT(247, void, png_set_eXIf, (png_const_structrp png_ptr, |
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png_inforp info_ptr, const png_bytep exif)); |
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png_inforp info_ptr, png_bytep exif)); |
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PNG_EXPORT(248, png_uint_32, png_get_eXIf_1, (png_const_structrp png_ptr, |
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png_const_inforp info_ptr, png_uint_32 *num_exif, png_bytep *exif)); |
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PNG_EXPORT(249, void, png_set_eXIf_1, (png_const_structrp png_ptr, |
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png_inforp info_ptr, const png_uint_32 num_exif, const png_bytep exif)); |
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png_inforp info_ptr, png_uint_32 num_exif, png_bytep exif)); |
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#endif |
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#ifdef PNG_gAMA_SUPPORTED |
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@ -2764,7 +2733,7 @@ typedef struct |
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* |
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* When the simplified API needs to convert between sRGB and linear colorspaces, |
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* the actual sRGB transfer curve defined in the sRGB specification (see the |
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* article at https://en.wikipedia.org/wiki/SRGB) is used, not the gamma=1/2.2
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* article at <https://en.wikipedia.org/wiki/SRGB>) is used, not the gamma=1/2.2
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* approximation used elsewhere in libpng. |
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* |
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* When an alpha channel is present it is expected to denote pixel coverage |
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@ -2967,7 +2936,7 @@ typedef struct |
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* 'flags' field of png_image. |
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*/ |
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#define PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB 0x01 |
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/* This indicates the the RGB values of the in-memory bitmap do not
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/* This indicates that the RGB values of the in-memory bitmap do not
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* correspond to the red, green and blue end-points defined by sRGB. |
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*/ |
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Stefan Dragnev
6 years ago