| 1 | /*␊ |
| 2 | * egpng.c␊ |
| 3 | * Loading function for PNG images (extension for libeg)␊ |
| 4 | *␊ |
| 5 | * Copyright (c) 2012-2013 Cadet-Petit Armel␊ |
| 6 | * All rights reserved.␊ |
| 7 | *␊ |
| 8 | * Redistribution and use in source and binary forms, with or without␊ |
| 9 | * modification, are permitted provided that the following conditions are␊ |
| 10 | * met:␊ |
| 11 | *␊ |
| 12 | * * Redistributions of source code must retain the above copyright␊ |
| 13 | * notice, this list of conditions and the following disclaimer.␊ |
| 14 | *␊ |
| 15 | * * Redistributions in binary form must reproduce the above copyright␊ |
| 16 | * notice, this list of conditions and the following disclaimer in the␊ |
| 17 | * documentation and/or other materials provided with the␊ |
| 18 | * distribution.␊ |
| 19 | *␊ |
| 20 | * * Neither the name of Cadet-Petit Armel nor the names of the␊ |
| 21 | * contributors may be used to endorse or promote products derived␊ |
| 22 | * from this software without specific prior written permission.␊ |
| 23 | *␊ |
| 24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS␊ |
| 25 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT␊ |
| 26 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR␊ |
| 27 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT␊ |
| 28 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,␊ |
| 29 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT␊ |
| 30 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,␊ |
| 31 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY␊ |
| 32 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT␊ |
| 33 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE␊ |
| 34 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.␊ |
| 35 | */␊ |
| 36 | ␊ |
| 37 | #include "libegint.h"␊ |
| 38 | #include <pexpert/i386/modules.h>␊ |
| 39 | #include "PngFile.h"␊ |
| 40 | ␊ |
| 41 | EG_IMAGE * egDecodePNG(IN UINT8 *FileData, IN UINTN FileDataLength, IN UINTN IconSize, IN BOOLEAN WantAlpha)␊ |
| 42 | {␊ |
| 43 | EG_IMAGE *NewImage;␊ |
| 44 | ␉UINT8␉␉␉␉*imagedata;␊ |
| 45 | ␉int␉␉␉␉␉width,height;␉␊ |
| 46 | ␉int␉␉␉␉␉piChannels;␊ |
| 47 | ␉VOID␉␉␉␉*BkgColor = NULL;␊ |
| 48 | ␉BOOLEAN␉␉␉␉ret ;␊ |
| 49 | ␊ |
| 50 | ␉if (FileData == NULL)␊ |
| 51 | ␉␉return NULL;␊ |
| 52 | ␉␊ |
| 53 | ␉width = 0;␊ |
| 54 | ␉height = 0;␊ |
| 55 | ␉piChannels = 0;␊ |
| 56 | ␉imagedata = NULL;␊ |
| 57 | ␉BkgColor = NULL;␊ |
| 58 | ␉ ␊ |
| 59 | ret = PngLoadData(FileData, FileDataLength, &width,␊ |
| 60 | ␉␉␉␉␉ &height, &imagedata, &piChannels, BkgColor);␊ |
| 61 | ␊ |
| 62 | ␉if (ret == FALSE) ␊ |
| 63 | ␉{␊ |
| 64 | ␉␉return NULL;␊ |
| 65 | ␉}␊ |
| 66 | ␉␊ |
| 67 | if (width && height && imagedata && piChannels)␊ |
| 68 | ␉{␊ |
| 69 | ␉␉NewImage = egCreateImageFromData((EG_PIXEL*)imagedata, width, height, (piChannels == 4) ? TRUE : FALSE, FALSE);␊ |
| 70 | ␉␉␊ |
| 71 | ␉␉if (NewImage) {␊ |
| 72 | ␉␉␉egFlipRB(NewImage);␉␉␉␉␉␊ |
| 73 | ␉␉␉return NewImage;␊ |
| 74 | ␉␉}␊ |
| 75 | ␊ |
| 76 | ␉}␊ |
| 77 | ␉␊ |
| 78 | ␉return NULL; ␊ |
| 79 | } |
