[692] | 1 | /*
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| 2 | -----------------------------------------------------------------------------
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| 3 | This source file is part of OGRE
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| 4 | (Object-oriented Graphics Rendering Engine)
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| 5 | For the latest info, see http://www.ogre3d.org/
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| 6 |
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| 7 | Copyright (c) 2000-2005 The OGRE Team
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| 8 | Also see acknowledgements in Readme.html
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| 9 |
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| 10 | This program is free software; you can redistribute it and/or modify it under
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| 11 | the terms of the GNU Lesser General Public License as published by the Free Software
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| 12 | Foundation; either version 2 of the License, or (at your option) any later
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| 13 | version.
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| 14 |
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| 15 | This program is distributed in the hope that it will be useful, but WITHOUT
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| 16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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| 17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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| 18 |
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| 19 | You should have received a copy of the GNU Lesser General Public License along with
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| 20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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| 21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to
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| 22 | http://www.gnu.org/copyleft/lesser.txt.
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| 23 | -----------------------------------------------------------------------------
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| 24 | */
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| 25 | #include "OgreStableHeaders.h"
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| 26 | #include "OgreImage.h"
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| 27 | #include "OgreArchiveManager.h"
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| 28 | #include "OgreException.h"
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| 29 | #include "OgreImageCodec.h"
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| 30 | #include "OgreColourValue.h"
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| 31 |
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| 32 | /* Use new scaling code when possible */
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| 33 | #define NEWSCALING
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| 34 |
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| 35 | #ifdef NEWSCALING
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| 36 | #include "OgreImageResampler.h"
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| 37 | #endif
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| 38 |
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| 39 | #if OGRE_NO_DEVIL == 0
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| 40 | #include "OgreILUtil.h"
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| 41 | // Dependency on IL/ILU for resize
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| 42 | #include <IL/il.h>
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| 43 | #include <IL/ilu.h>
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| 44 | #endif
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| 45 |
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| 46 | namespace Ogre {
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| 47 | ImageCodec::~ImageCodec() {
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| 48 | }
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| 49 |
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| 50 | //-----------------------------------------------------------------------------
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| 51 | Image::Image()
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| 52 | : m_uWidth(0),
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| 53 | m_uHeight(0),
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| 54 | m_uDepth(0),
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| 55 | m_uSize(0),
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| 56 | m_uNumMipmaps(0),
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| 57 | m_uFlags(0),
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| 58 | m_pBuffer( NULL ),
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| 59 | m_bAutoDelete( true )
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| 60 | {
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| 61 | }
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| 62 |
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| 63 | //-----------------------------------------------------------------------------
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| 64 | Image::Image( const Image &img )
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| 65 | : m_pBuffer( NULL ),
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| 66 | m_bAutoDelete( true )
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| 67 | {
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| 68 | // call assignment operator
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| 69 | *this = img;
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| 70 | }
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| 71 |
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| 72 | //-----------------------------------------------------------------------------
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| 73 | Image::~Image()
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| 74 | {
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| 75 | //Only delete if this was not a dynamic image (meaning app holds & destroys buffer)
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| 76 | if( m_pBuffer && m_bAutoDelete )
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| 77 | {
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| 78 | delete[] m_pBuffer;
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| 79 | m_pBuffer = NULL;
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| 80 | }
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| 81 | }
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| 82 |
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| 83 | //-----------------------------------------------------------------------------
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| 84 | Image & Image::operator = ( const Image &img )
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| 85 | {
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| 86 | if( m_pBuffer && m_bAutoDelete )
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| 87 | {
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| 88 | delete[] m_pBuffer;
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| 89 | m_pBuffer = NULL;
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| 90 | }
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| 91 | m_uWidth = img.m_uWidth;
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| 92 | m_uHeight = img.m_uHeight;
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| 93 | m_uDepth = img.m_uDepth;
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| 94 | m_eFormat = img.m_eFormat;
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| 95 | m_uSize = img.m_uSize;
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| 96 | m_uFlags = img.m_uFlags;
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| 97 | m_ucPixelSize = img.m_ucPixelSize;
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| 98 | m_uNumMipmaps = img.m_uNumMipmaps;
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| 99 | m_bAutoDelete = img.m_bAutoDelete;
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| 100 | //Only create/copy when previous data was not dynamic data
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| 101 | if( m_bAutoDelete )
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| 102 | {
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| 103 | m_pBuffer = new uchar[ m_uSize ];
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| 104 | memcpy( m_pBuffer, img.m_pBuffer, m_uSize );
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| 105 | }
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| 106 | else
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| 107 | {
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| 108 | m_pBuffer = img.m_pBuffer;
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| 109 | }
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| 110 |
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| 111 | return *this;
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| 112 | }
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| 113 |
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| 114 | //-----------------------------------------------------------------------------
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| 115 | Image & Image::flipAroundY()
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| 116 | {
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| 117 | OgreGuard( "Image::flipAroundY" );
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| 118 |
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| 119 | if( !m_pBuffer )
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| 120 | {
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| 121 | OGRE_EXCEPT(
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| 122 | Exception::ERR_INTERNAL_ERROR,
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| 123 | "Can not flip an unitialized texture",
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| 124 | "Image::flipAroundY" );
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| 125 | }
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| 126 |
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| 127 | m_uNumMipmaps = 0; // Image operations lose precomputed mipmaps
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| 128 |
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| 129 | uchar *pTempBuffer1 = NULL;
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| 130 | ushort *pTempBuffer2 = NULL;
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| 131 | uchar *pTempBuffer3 = NULL;
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| 132 | uint *pTempBuffer4 = NULL;
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| 133 |
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| 134 | uchar *src1 = m_pBuffer, *dst1 = NULL;
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| 135 | ushort *src2 = (ushort *)m_pBuffer, *dst2 = NULL;
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| 136 | uchar *src3 = m_pBuffer, *dst3 = NULL;
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| 137 | uint *src4 = (uint *)m_pBuffer, *dst4 = NULL;
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| 138 |
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| 139 | ushort y;
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| 140 | switch (m_ucPixelSize)
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| 141 | {
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| 142 | case 1:
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| 143 | pTempBuffer1 = new uchar[m_uWidth * m_uHeight];
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| 144 | for (y = 0; y < m_uHeight; y++)
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| 145 | {
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| 146 | dst1 = (pTempBuffer1 + ((y * m_uWidth) + m_uWidth - 1));
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| 147 | for (ushort x = 0; x < m_uWidth; x++)
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| 148 | memcpy(dst1--, src1++, sizeof(uchar));
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| 149 | }
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| 150 |
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| 151 | memcpy(m_pBuffer, pTempBuffer1, m_uWidth * m_uHeight * sizeof(uchar));
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| 152 | delete [] pTempBuffer1;
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| 153 | break;
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| 154 |
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| 155 | case 2:
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| 156 | pTempBuffer2 = new ushort[m_uWidth * m_uHeight];
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| 157 | for (y = 0; y < m_uHeight; y++)
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| 158 | {
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| 159 | dst2 = (pTempBuffer2 + ((y * m_uWidth) + m_uWidth - 1));
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| 160 | for (ushort x = 0; x < m_uWidth; x++)
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| 161 | memcpy(dst2--, src2++, sizeof(ushort));
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| 162 | }
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| 163 |
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| 164 | memcpy(m_pBuffer, pTempBuffer2, m_uWidth * m_uHeight * sizeof(ushort));
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| 165 | delete [] pTempBuffer2;
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| 166 | break;
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| 167 |
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| 168 | case 3:
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| 169 | pTempBuffer3 = new uchar[m_uWidth * m_uHeight * 3];
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| 170 | for (y = 0; y < m_uHeight; y++)
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| 171 | {
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| 172 | uint offset = ((y * m_uWidth) + (m_uWidth - 1)) * 3;
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| 173 | dst3 = pTempBuffer3;
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| 174 | dst3 += offset;
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| 175 | for (ushort x = 0; x < m_uWidth; x++)
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| 176 | {
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| 177 | memcpy(dst3, src3, sizeof(uchar) * 3);
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| 178 | dst3 -= 3; src3 += 3;
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| 179 | }
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| 180 | }
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| 181 |
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| 182 | memcpy(m_pBuffer, pTempBuffer3, m_uWidth * m_uHeight * sizeof(uchar) * 3);
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| 183 | delete [] pTempBuffer3;
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| 184 | break;
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| 185 |
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| 186 | case 4:
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| 187 | pTempBuffer4 = new uint[m_uWidth * m_uHeight];
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| 188 | for (y = 0; y < m_uHeight; y++)
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| 189 | {
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| 190 | dst4 = (pTempBuffer4 + ((y * m_uWidth) + m_uWidth - 1));
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| 191 | for (ushort x = 0; x < m_uWidth; x++)
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| 192 | memcpy(dst4--, src4++, sizeof(uint));
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| 193 | }
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| 194 |
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| 195 | memcpy(m_pBuffer, pTempBuffer4, m_uWidth * m_uHeight * sizeof(uint));
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| 196 | delete [] pTempBuffer4;
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| 197 | break;
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| 198 |
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| 199 | default:
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| 200 | OGRE_EXCEPT(
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| 201 | Exception::ERR_INTERNAL_ERROR,
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| 202 | "Unknown pixel depth",
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| 203 | "Image::flipAroundY" );
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| 204 | break;
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| 205 | }
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| 206 |
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| 207 | OgreUnguardRet( *this );
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| 208 | }
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| 209 |
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| 210 | //-----------------------------------------------------------------------------
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| 211 | Image & Image::flipAroundX()
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| 212 | {
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| 213 | OgreGuard( "Image::flipAroundX" );
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| 214 |
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| 215 | if( !m_pBuffer )
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| 216 | {
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| 217 | OGRE_EXCEPT(
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| 218 | Exception::ERR_INTERNAL_ERROR,
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| 219 | "Can not flip an unitialized texture",
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| 220 | "Image::flipAroundX" );
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| 221 | }
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| 222 |
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| 223 | m_uNumMipmaps = 0; // Image operations lose precomputed mipmaps
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| 224 |
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| 225 | size_t rowSpan = m_uWidth * m_ucPixelSize;
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| 226 |
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| 227 | uchar *pTempBuffer = new uchar[ rowSpan * m_uHeight ];
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| 228 | uchar *ptr1 = m_pBuffer, *ptr2 = pTempBuffer + ( ( m_uHeight - 1 ) * rowSpan );
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| 229 |
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| 230 | for( ushort i = 0; i < m_uHeight; i++ )
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| 231 | {
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| 232 | memcpy( ptr2, ptr1, rowSpan );
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| 233 | ptr1 += rowSpan; ptr2 -= rowSpan;
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| 234 | }
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| 235 |
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| 236 | memcpy( m_pBuffer, pTempBuffer, rowSpan * m_uHeight);
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| 237 |
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| 238 | delete [] pTempBuffer;
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| 239 |
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| 240 | OgreUnguardRet( *this );
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| 241 | }
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| 242 |
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| 243 | //-----------------------------------------------------------------------------
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| 244 | Image& Image::loadDynamicImage( uchar* pData, size_t uWidth, size_t uHeight,
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| 245 | size_t depth,
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| 246 | PixelFormat eFormat, bool autoDelete,
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| 247 | size_t numFaces, size_t numMipMaps)
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| 248 | {
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| 249 | OgreGuard( "Image::loadDynamicImage" );
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| 250 |
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| 251 | if( m_pBuffer && m_bAutoDelete )
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| 252 | {
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| 253 | delete[] m_pBuffer;
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| 254 | m_pBuffer = NULL;
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| 255 | }
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| 256 | // Set image metadata
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| 257 | m_uWidth = uWidth;
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| 258 | m_uHeight = uHeight;
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| 259 | m_uDepth = depth;
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| 260 | m_eFormat = eFormat;
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| 261 | m_ucPixelSize = PixelUtil::getNumElemBytes( m_eFormat );
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| 262 | m_uNumMipmaps = numMipMaps;
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| 263 | m_uFlags = 0;
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| 264 | // Set flags
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| 265 | if (PixelUtil::isCompressed(eFormat))
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| 266 | m_uFlags |= IF_COMPRESSED;
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| 267 | if (m_uDepth != 1)
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| 268 | m_uFlags |= IF_3D_TEXTURE;
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| 269 | if(numFaces == 6)
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| 270 | m_uFlags |= IF_CUBEMAP;
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| 271 | if(numFaces != 6 && numFaces != 1)
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| 272 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
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| 273 | "Number of faces currently must be 6 or 1.",
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| 274 | "Image::loadDynamicImage");
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| 275 |
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| 276 | m_uSize = calculateSize(numMipMaps, numFaces, uWidth, uHeight, depth, eFormat);
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| 277 | m_pBuffer = pData;
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| 278 | m_bAutoDelete = autoDelete;
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| 279 |
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| 280 | OgreUnguardRet( *this );
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| 281 | }
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| 282 |
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| 283 | //-----------------------------------------------------------------------------
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| 284 | Image & Image::loadRawData(
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| 285 | DataStreamPtr& stream,
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| 286 | size_t uWidth, size_t uHeight, size_t uDepth,
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| 287 | PixelFormat eFormat,
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| 288 | size_t numFaces, size_t numMipMaps)
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| 289 | {
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| 290 | OgreGuard( "Image::loadRawData" );
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| 291 |
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| 292 | size_t size = calculateSize(numMipMaps, numFaces, uWidth, uHeight, uDepth, eFormat);
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| 293 | if (size != stream->size())
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| 294 | {
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| 295 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
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| 296 | "Stream size does not match calculated image size",
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| 297 | "Image::loadRawData");
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| 298 | }
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| 299 |
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| 300 | uchar *buffer = new uchar[ size ];
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| 301 | stream->read(buffer, size);
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| 302 |
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| 303 | loadDynamicImage(buffer,
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| 304 | uWidth, uHeight, uDepth,
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| 305 | eFormat, true, numFaces, numMipMaps);
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| 306 |
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| 307 | OgreUnguardRet( *this );
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| 308 | }
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| 309 |
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| 310 | //-----------------------------------------------------------------------------
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| 311 | Image & Image::load(const String& strFileName, const String& group)
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| 312 | {
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| 313 | OgreGuard( "Image::load" );
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| 314 |
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| 315 | if( m_pBuffer && m_bAutoDelete )
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| 316 | {
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| 317 | delete[] m_pBuffer;
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| 318 | m_pBuffer = NULL;
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| 319 | }
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| 320 |
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| 321 | String strExt;
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| 322 |
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| 323 | size_t pos = strFileName.find_last_of(".");
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| 324 | if( pos == String::npos )
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| 325 | OGRE_EXCEPT(
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| 326 | Exception::ERR_INVALIDPARAMS,
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| 327 | "Unable to load image file '" + strFileName + "' - invalid extension.",
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| 328 | "Image::load" );
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| 329 |
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| 330 | while( pos != strFileName.length() - 1 )
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| 331 | strExt += strFileName[++pos];
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| 332 |
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| 333 | Codec * pCodec = Codec::getCodec(strExt);
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| 334 | if( !pCodec )
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| 335 | OGRE_EXCEPT(
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| 336 | Exception::ERR_INVALIDPARAMS,
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| 337 | "Unable to load image file '" + strFileName + "' - invalid extension.",
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| 338 | "Image::load" );
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| 339 |
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| 340 | DataStreamPtr encoded =
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| 341 | ResourceGroupManager::getSingleton().openResource(strFileName, group);
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| 342 |
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| 343 | Codec::DecodeResult res = pCodec->decode(encoded);
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| 344 |
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| 345 | ImageCodec::ImageData* pData =
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| 346 | static_cast<ImageCodec::ImageData*>(res.second.getPointer());
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| 347 |
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| 348 | // Get the format and compute the pixel size
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| 349 | m_uWidth = pData->width;
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| 350 | m_uHeight = pData->height;
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| 351 | m_uDepth = pData->depth;
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| 352 | m_uSize = pData->size;
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| 353 | m_eFormat = pData->format;
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| 354 | m_uNumMipmaps = pData->num_mipmaps;
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| 355 | m_ucPixelSize = PixelUtil::getNumElemBytes( m_eFormat );
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| 356 | m_uFlags = pData->flags;
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| 357 |
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| 358 | // re-use the decoded buffer
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| 359 | m_pBuffer = res.first->getPtr();
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| 360 | // ensure we don't delete when stream is closed
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| 361 | res.first->setFreeOnClose(false);
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| 362 |
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| 363 | OgreUnguardRet( *this );
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| 364 | }
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| 365 | //-----------------------------------------------------------------------------
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| 366 | void Image::save(const String& filename)
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| 367 | {
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| 368 | if( !m_pBuffer )
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| 369 | {
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| 370 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "No image data loaded",
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| 371 | "Image::save");
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| 372 | }
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| 373 |
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| 374 | String strExt;
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| 375 | size_t pos = filename.find_last_of(".");
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| 376 | if( pos == String::npos )
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| 377 | OGRE_EXCEPT(
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| 378 | Exception::ERR_INVALIDPARAMS,
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| 379 | "Unable to save image file '" + filename + "' - invalid extension.",
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| 380 | "Image::save" );
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| 381 |
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| 382 | while( pos != filename.length() - 1 )
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| 383 | strExt += filename[++pos];
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| 384 |
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| 385 | Codec * pCodec = Codec::getCodec(strExt);
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| 386 | if( !pCodec )
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| 387 | OGRE_EXCEPT(
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| 388 | Exception::ERR_INVALIDPARAMS,
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| 389 | "Unable to save image file '" + filename + "' - invalid extension.",
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| 390 | "Image::save" );
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| 391 |
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| 392 | ImageCodec::ImageData* imgData = new ImageCodec::ImageData();
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| 393 | imgData->format = m_eFormat;
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| 394 | imgData->height = m_uHeight;
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| 395 | imgData->width = m_uWidth;
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| 396 | imgData->depth = m_uDepth;
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| 397 | // Wrap in CodecDataPtr, this will delete
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| 398 | Codec::CodecDataPtr codeDataPtr(imgData);
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| 399 | // Wrap memory, be sure not to delete when stream destroyed
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| 400 | MemoryDataStreamPtr wrapper(new MemoryDataStream(m_pBuffer, m_uSize, false));
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| 401 |
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| 402 | pCodec->codeToFile(wrapper, filename, codeDataPtr);
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| 403 | }
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| 404 | //-----------------------------------------------------------------------------
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| 405 | Image & Image::load(DataStreamPtr& stream, const String& type )
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| 406 | {
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| 407 | OgreGuard( "Image::load" );
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| 408 | if( m_pBuffer && m_bAutoDelete )
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| 409 | {
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| 410 | delete[] m_pBuffer;
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| 411 | m_pBuffer = NULL;
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| 412 | }
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| 413 |
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| 414 | String strType = type;
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| 415 |
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| 416 | Codec * pCodec = Codec::getCodec(strType);
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| 417 | if( !pCodec )
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| 418 | OGRE_EXCEPT(
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| 419 | Exception::ERR_INVALIDPARAMS,
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| 420 | "Unable to load image - invalid extension.",
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| 421 | "Image::load" );
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| 422 |
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| 423 | Codec::DecodeResult res = pCodec->decode(stream);
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| 424 |
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| 425 | ImageCodec::ImageData* pData =
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| 426 | static_cast<ImageCodec::ImageData*>(res.second.getPointer());
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| 427 |
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| 428 | m_uWidth = pData->width;
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| 429 | m_uHeight = pData->height;
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| 430 | m_uDepth = pData->depth;
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| 431 | m_uSize = pData->size;
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| 432 | m_uNumMipmaps = pData->num_mipmaps;
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| 433 | m_uFlags = pData->flags;
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| 434 |
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| 435 | // Get the format and compute the pixel size
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| 436 | m_eFormat = pData->format;
|
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| 437 | m_ucPixelSize = PixelUtil::getNumElemBytes( m_eFormat );
|
---|
| 438 | // Just use internal buffer of returned memory stream
|
---|
| 439 | m_pBuffer = res.first->getPtr();
|
---|
| 440 | // Make sure stream does not delete
|
---|
| 441 | res.first->setFreeOnClose(false);
|
---|
| 442 |
|
---|
| 443 | OgreUnguardRet( *this );
|
---|
| 444 | }
|
---|
| 445 |
|
---|
| 446 | //-----------------------------------------------------------------------------
|
---|
| 447 | uchar* Image::getData()
|
---|
| 448 | {
|
---|
| 449 | return m_pBuffer;
|
---|
| 450 | }
|
---|
| 451 |
|
---|
| 452 | //-----------------------------------------------------------------------------
|
---|
| 453 | const uchar* Image::getData() const
|
---|
| 454 | {
|
---|
| 455 | assert( m_pBuffer );
|
---|
| 456 | return m_pBuffer;
|
---|
| 457 | }
|
---|
| 458 |
|
---|
| 459 | //-----------------------------------------------------------------------------
|
---|
| 460 | size_t Image::getSize() const
|
---|
| 461 | {
|
---|
| 462 | return m_uSize;
|
---|
| 463 | }
|
---|
| 464 |
|
---|
| 465 | //-----------------------------------------------------------------------------
|
---|
| 466 | size_t Image::getNumMipmaps() const
|
---|
| 467 | {
|
---|
| 468 | return m_uNumMipmaps;
|
---|
| 469 | }
|
---|
| 470 |
|
---|
| 471 | //-----------------------------------------------------------------------------
|
---|
| 472 | bool Image::hasFlag(const ImageFlags imgFlag) const
|
---|
| 473 | {
|
---|
| 474 | if(m_uFlags & imgFlag)
|
---|
| 475 | {
|
---|
| 476 | return true;
|
---|
| 477 | }
|
---|
| 478 | else
|
---|
| 479 | {
|
---|
| 480 | return false;
|
---|
| 481 | }
|
---|
| 482 | }
|
---|
| 483 |
|
---|
| 484 | //-----------------------------------------------------------------------------
|
---|
| 485 | size_t Image::getDepth() const
|
---|
| 486 | {
|
---|
| 487 | return m_uDepth;
|
---|
| 488 | }
|
---|
| 489 | //-----------------------------------------------------------------------------
|
---|
| 490 | size_t Image::getWidth() const
|
---|
| 491 | {
|
---|
| 492 | return m_uWidth;
|
---|
| 493 | }
|
---|
| 494 |
|
---|
| 495 | //-----------------------------------------------------------------------------
|
---|
| 496 | size_t Image::getHeight() const
|
---|
| 497 | {
|
---|
| 498 | return m_uHeight;
|
---|
| 499 | }
|
---|
| 500 | //-----------------------------------------------------------------------------
|
---|
| 501 | size_t Image::getNumFaces(void) const
|
---|
| 502 | {
|
---|
| 503 | if(hasFlag(IF_CUBEMAP))
|
---|
| 504 | return 6;
|
---|
| 505 | return 1;
|
---|
| 506 | }
|
---|
| 507 | //-----------------------------------------------------------------------------
|
---|
| 508 | size_t Image::getRowSpan() const
|
---|
| 509 | {
|
---|
| 510 | return m_uWidth * m_ucPixelSize;
|
---|
| 511 | }
|
---|
| 512 |
|
---|
| 513 | //-----------------------------------------------------------------------------
|
---|
| 514 | PixelFormat Image::getFormat() const
|
---|
| 515 | {
|
---|
| 516 | return m_eFormat;
|
---|
| 517 | }
|
---|
| 518 |
|
---|
| 519 | //-----------------------------------------------------------------------------
|
---|
| 520 | uchar Image::getBPP() const
|
---|
| 521 | {
|
---|
| 522 | return m_ucPixelSize * 8;
|
---|
| 523 | }
|
---|
| 524 |
|
---|
| 525 | //-----------------------------------------------------------------------------
|
---|
| 526 | bool Image::getHasAlpha(void) const
|
---|
| 527 | {
|
---|
| 528 | return PixelUtil::getFlags(m_eFormat) & PFF_HASALPHA;
|
---|
| 529 | }
|
---|
| 530 | //-----------------------------------------------------------------------------
|
---|
| 531 | void Image::applyGamma( unsigned char *buffer, Real gamma, size_t size, uchar bpp )
|
---|
| 532 | {
|
---|
| 533 | if( gamma == 1.0f )
|
---|
| 534 | return;
|
---|
| 535 |
|
---|
| 536 | //NB only 24/32-bit supported
|
---|
| 537 | if( bpp != 24 && bpp != 32 ) return;
|
---|
| 538 |
|
---|
| 539 | uint stride = bpp >> 3;
|
---|
| 540 |
|
---|
| 541 | for( size_t i = 0, j = size / stride; i < j; i++, buffer += stride )
|
---|
| 542 | {
|
---|
| 543 | float r, g, b;
|
---|
| 544 |
|
---|
| 545 | r = (float)buffer[0];
|
---|
| 546 | g = (float)buffer[1];
|
---|
| 547 | b = (float)buffer[2];
|
---|
| 548 |
|
---|
| 549 | r = r * gamma;
|
---|
| 550 | g = g * gamma;
|
---|
| 551 | b = b * gamma;
|
---|
| 552 |
|
---|
| 553 | float scale = 1.0f, tmp;
|
---|
| 554 |
|
---|
| 555 | if( r > 255.0f && (tmp=(255.0f/r)) < scale )
|
---|
| 556 | scale = tmp;
|
---|
| 557 | if( g > 255.0f && (tmp=(255.0f/g)) < scale )
|
---|
| 558 | scale = tmp;
|
---|
| 559 | if( b > 255.0f && (tmp=(255.0f/b)) < scale )
|
---|
| 560 | scale = tmp;
|
---|
| 561 |
|
---|
| 562 | r *= scale; g *= scale; b *= scale;
|
---|
| 563 |
|
---|
| 564 | buffer[0] = (uchar)r;
|
---|
| 565 | buffer[1] = (uchar)g;
|
---|
| 566 | buffer[2] = (uchar)b;
|
---|
| 567 | }
|
---|
| 568 | }
|
---|
| 569 | //-----------------------------------------------------------------------------
|
---|
| 570 | #if OGRE_NO_DEVIL == 0
|
---|
| 571 | // Local declaration of DevIL functions to prevent DevIL dependencies on header users
|
---|
| 572 | ILenum getILFilter(Image::Filter filter)
|
---|
| 573 | {
|
---|
| 574 | switch (filter)
|
---|
| 575 | {
|
---|
| 576 | case Image::FILTER_NEAREST:
|
---|
| 577 | return ILU_NEAREST;
|
---|
| 578 | case Image::FILTER_LINEAR:
|
---|
| 579 | return ILU_LINEAR;
|
---|
| 580 | case Image::FILTER_BILINEAR:
|
---|
| 581 | return ILU_BILINEAR;
|
---|
| 582 | case Image::FILTER_BOX:
|
---|
| 583 | return ILU_SCALE_BOX;
|
---|
| 584 | case Image::FILTER_TRIANGLE:
|
---|
| 585 | return ILU_SCALE_TRIANGLE;
|
---|
| 586 | case Image::FILTER_BICUBIC:
|
---|
| 587 | return ILU_SCALE_BSPLINE;
|
---|
| 588 | };
|
---|
| 589 | // keep compiler happy
|
---|
| 590 | return ILU_NEAREST;
|
---|
| 591 | }
|
---|
| 592 | #endif
|
---|
| 593 | //-----------------------------------------------------------------------------
|
---|
| 594 | void Image::resize(ushort width, ushort height, Filter filter)
|
---|
| 595 | {
|
---|
| 596 | // resizing dynamic images is not supported
|
---|
| 597 | assert(m_bAutoDelete);
|
---|
| 598 | assert(m_uDepth == 1);
|
---|
| 599 |
|
---|
| 600 | // reassign buffer to temp image, make sure auto-delete is true
|
---|
| 601 | Image temp;
|
---|
| 602 | temp.loadDynamicImage(m_pBuffer, m_uWidth, m_uHeight, 1, m_eFormat, true);
|
---|
| 603 | // do not delete[] m_pBuffer! temp will destroy it
|
---|
| 604 |
|
---|
| 605 | // set new dimensions, allocate new buffer
|
---|
| 606 | m_uWidth = width;
|
---|
| 607 | m_uHeight = height;
|
---|
| 608 | m_uSize = PixelUtil::getMemorySize(m_uWidth, m_uHeight, 1, m_eFormat);
|
---|
| 609 | m_pBuffer = new uchar[m_uSize];
|
---|
| 610 | m_uNumMipmaps = 0; // Loses precomputed mipmaps
|
---|
| 611 |
|
---|
| 612 | // scale the image from temp into our resized buffer
|
---|
| 613 | Image::scale(temp.getPixelBox(), getPixelBox(), filter);
|
---|
| 614 | }
|
---|
| 615 | //-----------------------------------------------------------------------
|
---|
| 616 | void Image::scale(const PixelBox &src, const PixelBox &scaled, Filter filter)
|
---|
| 617 | {
|
---|
| 618 | assert(PixelUtil::isAccessible(src.format));
|
---|
| 619 | assert(PixelUtil::isAccessible(scaled.format));
|
---|
| 620 | #ifdef NEWSCALING
|
---|
| 621 | MemoryDataStreamPtr buf; // For auto-delete
|
---|
| 622 | PixelBox temp;
|
---|
| 623 | switch (filter) {
|
---|
| 624 | case FILTER_NEAREST:
|
---|
| 625 | if(src.format == scaled.format) {
|
---|
| 626 | // No intermediate buffer needed
|
---|
| 627 | temp = scaled;
|
---|
| 628 | }
|
---|
| 629 | else
|
---|
| 630 | {
|
---|
| 631 | // Allocate temporary buffer of destination size in source format
|
---|
| 632 | temp = PixelBox(scaled.getWidth(), scaled.getHeight(), scaled.getDepth(), src.format);
|
---|
| 633 | buf.bind(new MemoryDataStream(temp.getConsecutiveSize()));
|
---|
| 634 | temp.data = buf->getPtr();
|
---|
| 635 | }
|
---|
| 636 | // super-optimized: no conversion
|
---|
| 637 | switch (PixelUtil::getNumElemBytes(src.format)) {
|
---|
| 638 | case 1: NearestResampler<1>::scale(src, temp); break;
|
---|
| 639 | case 2: NearestResampler<2>::scale(src, temp); break;
|
---|
| 640 | case 3: NearestResampler<3>::scale(src, temp); break;
|
---|
| 641 | case 4: NearestResampler<4>::scale(src, temp); break;
|
---|
| 642 | case 6: NearestResampler<6>::scale(src, temp); break;
|
---|
| 643 | case 8: NearestResampler<8>::scale(src, temp); break;
|
---|
| 644 | case 12: NearestResampler<12>::scale(src, temp); break;
|
---|
| 645 | case 16: NearestResampler<16>::scale(src, temp); break;
|
---|
| 646 | default:
|
---|
| 647 | // never reached
|
---|
| 648 | assert(false);
|
---|
| 649 | }
|
---|
| 650 | if(temp.data != scaled.data)
|
---|
| 651 | {
|
---|
| 652 | // Blit temp buffer
|
---|
| 653 | PixelUtil::bulkPixelConversion(temp, scaled);
|
---|
| 654 | }
|
---|
| 655 | break;
|
---|
| 656 |
|
---|
| 657 | case FILTER_LINEAR:
|
---|
| 658 | case FILTER_BILINEAR:
|
---|
| 659 | switch (src.format) {
|
---|
| 660 | case PF_L8: case PF_A8: case PF_BYTE_LA:
|
---|
| 661 | case PF_R8G8B8: case PF_B8G8R8:
|
---|
| 662 | case PF_R8G8B8A8: case PF_B8G8R8A8:
|
---|
| 663 | case PF_A8B8G8R8: case PF_A8R8G8B8:
|
---|
| 664 | case PF_X8B8G8R8: case PF_X8R8G8B8:
|
---|
| 665 | if(src.format == scaled.format) {
|
---|
| 666 | // No intermediate buffer needed
|
---|
| 667 | temp = scaled;
|
---|
| 668 | }
|
---|
| 669 | else
|
---|
| 670 | {
|
---|
| 671 | // Allocate temp buffer of destination size in source format
|
---|
| 672 | temp = PixelBox(scaled.getWidth(), scaled.getHeight(), scaled.getDepth(), src.format);
|
---|
| 673 | buf.bind(new MemoryDataStream(temp.getConsecutiveSize()));
|
---|
| 674 | temp.data = buf->getPtr();
|
---|
| 675 | }
|
---|
| 676 | // super-optimized: byte-oriented math, no conversion
|
---|
| 677 | switch (PixelUtil::getNumElemBytes(src.format)) {
|
---|
| 678 | case 1: LinearResampler_Byte<1>::scale(src, temp); break;
|
---|
| 679 | case 2: LinearResampler_Byte<2>::scale(src, temp); break;
|
---|
| 680 | case 3: LinearResampler_Byte<3>::scale(src, temp); break;
|
---|
| 681 | case 4: LinearResampler_Byte<4>::scale(src, temp); break;
|
---|
| 682 | default:
|
---|
| 683 | // never reached
|
---|
| 684 | assert(false);
|
---|
| 685 | }
|
---|
| 686 | if(temp.data != scaled.data)
|
---|
| 687 | {
|
---|
| 688 | // Blit temp buffer
|
---|
| 689 | PixelUtil::bulkPixelConversion(temp, scaled);
|
---|
| 690 | }
|
---|
| 691 | break;
|
---|
| 692 | case PF_FLOAT32_RGB:
|
---|
| 693 | case PF_FLOAT32_RGBA:
|
---|
| 694 | if (scaled.format == PF_FLOAT32_RGB || scaled.format == PF_FLOAT32_RGBA)
|
---|
| 695 | {
|
---|
| 696 | // float32 to float32, avoid unpack/repack overhead
|
---|
| 697 | LinearResampler_Float32::scale(src, scaled);
|
---|
| 698 | break;
|
---|
| 699 | }
|
---|
| 700 | // else, fall through
|
---|
| 701 | default:
|
---|
| 702 | // non-optimized: floating-point math, performs conversion but always works
|
---|
| 703 | LinearResampler::scale(src, scaled);
|
---|
| 704 | }
|
---|
| 705 | break;
|
---|
| 706 | default:
|
---|
| 707 | // fall back to old, slow, wildly incorrect DevIL code
|
---|
| 708 | #endif
|
---|
| 709 | #if OGRE_NO_DEVIL == 0
|
---|
| 710 | ILuint ImageName;
|
---|
| 711 | ilGenImages( 1, &ImageName );
|
---|
| 712 | ilBindImage( ImageName );
|
---|
| 713 |
|
---|
| 714 | // Convert image from OGRE to current IL image
|
---|
| 715 | ILUtil::fromOgre(src);
|
---|
| 716 |
|
---|
| 717 | // set filter
|
---|
| 718 | iluImageParameter(ILU_FILTER, getILFilter(filter));
|
---|
| 719 |
|
---|
| 720 | // do the scaling
|
---|
| 721 | if(!iluScale(scaled.getWidth(), scaled.getHeight(), scaled.getDepth())) {
|
---|
| 722 | OGRE_EXCEPT( Exception::ERR_INTERNAL_ERROR,
|
---|
| 723 | iluErrorString(ilGetError()),
|
---|
| 724 | "Image::scale" ) ;
|
---|
| 725 | }
|
---|
| 726 | ILUtil::toOgre(scaled);
|
---|
| 727 |
|
---|
| 728 | ilDeleteImages(1, &ImageName);
|
---|
| 729 |
|
---|
| 730 | // return to default filter
|
---|
| 731 | iluImageParameter(ILU_FILTER, ILU_NEAREST);
|
---|
| 732 | #else
|
---|
| 733 | OGRE_EXCEPT( Exception::UNIMPLEMENTED_FEATURE,
|
---|
| 734 | "Scaling algorithm not implemented without DevIL",
|
---|
| 735 | "Image::scale" ) ;
|
---|
| 736 | #endif
|
---|
| 737 | #ifdef NEWSCALING
|
---|
| 738 | }
|
---|
| 739 | #endif
|
---|
| 740 | }
|
---|
| 741 |
|
---|
| 742 | //-----------------------------------------------------------------------------
|
---|
| 743 |
|
---|
| 744 | ColourValue Image::getColourAt(int x, int y, int z)
|
---|
| 745 | {
|
---|
| 746 | ColourValue rval;
|
---|
| 747 | PixelUtil::unpackColour(&rval, m_eFormat, &m_pBuffer[m_ucPixelSize * (z * m_uWidth * m_uHeight + m_uWidth * y + x)]);
|
---|
| 748 | return rval;
|
---|
| 749 | }
|
---|
| 750 |
|
---|
| 751 | //-----------------------------------------------------------------------------
|
---|
| 752 |
|
---|
| 753 | PixelBox Image::getPixelBox(size_t face, size_t mipmap) const
|
---|
| 754 | {
|
---|
| 755 | if(mipmap > getNumMipmaps())
|
---|
| 756 | OGRE_EXCEPT( Exception::UNIMPLEMENTED_FEATURE,
|
---|
| 757 | "Mipmap index out of range",
|
---|
| 758 | "Image::getPixelBox" ) ;
|
---|
| 759 | if(face >= getNumFaces())
|
---|
| 760 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "Face index out of range",
|
---|
| 761 | "Image::getPixelBox");
|
---|
| 762 | // Calculate mipmap offset and size
|
---|
| 763 | uint8 *offset = const_cast<uint8*>(getData());
|
---|
| 764 | size_t width = getWidth(), height=getHeight(), depth=getDepth();
|
---|
| 765 | size_t faceSize; // Size of one face of the image
|
---|
| 766 | for(size_t mip=0; mip<mipmap; ++mip)
|
---|
| 767 | {
|
---|
| 768 | faceSize = PixelUtil::getMemorySize(width, height, depth, getFormat());
|
---|
| 769 | /// Skip all faces of this mipmap
|
---|
| 770 | offset += faceSize*getNumFaces();
|
---|
| 771 | /// Half size in each dimension
|
---|
| 772 | if(width!=1) width /= 2;
|
---|
| 773 | if(height!=1) height /= 2;
|
---|
| 774 | if(depth!=1) depth /= 2;
|
---|
| 775 | }
|
---|
| 776 | // We have advanced to the desired mipmap, offset to right face
|
---|
| 777 | faceSize = PixelUtil::getMemorySize(width, height, depth, getFormat());
|
---|
| 778 | offset += faceSize*face;
|
---|
| 779 | // Return subface as pixelbox
|
---|
| 780 | PixelBox src(width, height, depth, getFormat(), offset);
|
---|
| 781 | return src;
|
---|
| 782 | }
|
---|
| 783 | //-----------------------------------------------------------------------------
|
---|
| 784 | size_t Image::calculateSize(size_t mipmaps, size_t faces, size_t width, size_t height, size_t depth,
|
---|
| 785 | PixelFormat format)
|
---|
| 786 | {
|
---|
| 787 | size_t size = 0;
|
---|
| 788 | for(size_t mip=0; mip<=mipmaps; ++mip)
|
---|
| 789 | {
|
---|
| 790 | size += PixelUtil::getMemorySize(width, height, depth, format)*faces;
|
---|
| 791 | if(width!=1) width /= 2;
|
---|
| 792 | if(height!=1) height /= 2;
|
---|
| 793 | if(depth!=1) depth /= 2;
|
---|
| 794 | }
|
---|
| 795 | return size;
|
---|
| 796 | }
|
---|
| 797 |
|
---|
| 798 | }
|
---|