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author | Aki <please@ignore.pl> | 2021-10-01 23:46:47 +0200 |
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committer | Aki <please@ignore.pl> | 2021-10-01 23:46:47 +0200 |
commit | ddd76aa4e1571c8d5965709db5c3cd47a89c9a38 (patch) | |
tree | 4e07bfaebede6531a70984fdebc855bca52f394a /nGenEx/PngImage.cpp | |
parent | 3a507e08b1d4e5970b27401a7e6517570d529400 (diff) | |
parent | c2d2c3551501110fddd78674d5435bfaa70382a3 (diff) | |
download | starshatter-ddd76aa4e1571c8d5965709db5c3cd47a89c9a38.zip starshatter-ddd76aa4e1571c8d5965709db5c3cd47a89c9a38.tar.gz starshatter-ddd76aa4e1571c8d5965709db5c3cd47a89c9a38.tar.bz2 |
Project is now built with CMake
Diffstat (limited to 'nGenEx/PngImage.cpp')
-rw-r--r-- | nGenEx/PngImage.cpp | 279 |
1 files changed, 0 insertions, 279 deletions
diff --git a/nGenEx/PngImage.cpp b/nGenEx/PngImage.cpp deleted file mode 100644 index 2afa03e..0000000 --- a/nGenEx/PngImage.cpp +++ /dev/null @@ -1,279 +0,0 @@ -/* Starshatter OpenSource Distribution - Copyright (c) 1997-2004, Destroyer Studios LLC. - All Rights Reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - - * Redistributions of source code must retain the above copyright notice, - this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright notice, - this list of conditions and the following disclaimer in the documentation - and/or other materials provided with the distribution. - * Neither the name "Destroyer Studios" nor the names of its contributors - may be used to endorse or promote products derived from this software - without specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE - LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - POSSIBILITY OF SUCH DAMAGE. - - SUBSYSTEM: nGenEx.lib - FILE: PngImage.cpp - AUTHOR: John DiCamillo - - - OVERVIEW - ======== - BMP image file loader -*/ - - -#include "MemDebug.h" -#include "PngImage.h" - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -// Needed for compatibility with libpng 1.4++ -#define png_infopp_NULL (png_infopp)NULL -#define png_voidp_NULL (png_voidp)NULL -#define int_p_NULL (int*)NULL - -#include "png.h" - -// +--------------------------------------------------------------------+ - -PngImage::PngImage() -: width(0), height(0), bpp(0), alpha_loaded(false), image(0) -{ } - -PngImage::~PngImage() -{ - delete [] image; -} - -// +--------------------------------------------------------------------+ - -int PngImage::Load(char *filename) -{ - int status = PNG_INVALID; - FILE* f; - - fopen_s(&f, filename,"rb"); - if (f == NULL) - return PNG_NOFILE; - - BYTE buf[12]; - fread(buf, 8, 1, f); - fseek(f, 0, SEEK_SET); - - if (png_sig_cmp(buf, (png_size_t)0, 8)) - return PNG_INVALID; - - png_structp png_ptr; - png_infop info_ptr; - - /* Create and initialize the png_struct with the desired error handler - * functions. If you want to use the default stderr and longjump method, - * you can supply NULL for the last three parameters. We also supply the - * the compiler header file version, so that we know if the application - * was compiled with a compatible version of the library. REQUIRED - */ - png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0); - - if (!png_ptr) { - return PNG_NOMEM; - } - - /* Allocate/initialize the memory for image information. REQUIRED. */ - info_ptr = png_create_info_struct(png_ptr); - if (!info_ptr) { - png_destroy_read_struct(&png_ptr, png_infopp_NULL, png_infopp_NULL); - return PNG_NOMEM; - } - - png_init_io(png_ptr, f); - png_read_png(png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, png_voidp_NULL); - - status = CreateImage(png_ptr, info_ptr); - - png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL); - - fclose(f); - return status; -} - -// +--------------------------------------------------------------------+ - -struct PngIOStruct -{ - BYTE* fp; - BYTE* buffer; - DWORD length; -}; - -static void png_user_read_data(png_structp read_ptr, png_bytep data, png_size_t length) -{ - PngIOStruct* read_io_ptr = (PngIOStruct*) png_get_io_ptr(read_ptr); - - if (!read_io_ptr) - return; - - if (read_io_ptr->fp + length < read_io_ptr->buffer + read_io_ptr->length) { - memcpy(data, read_io_ptr->fp, length); - read_io_ptr->fp += length; - } -} - -static void png_user_write_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ -} - -static void png_user_flush_data(png_structp png_ptr) -{ -} - -int PngImage::LoadBuffer(unsigned char* buf, int len) -{ - int status = PNG_INVALID; - PngIOStruct io; - - if (buf == NULL) - return PNG_NOFILE; - - if (png_sig_cmp(buf, (png_size_t)0, 8)) - return PNG_INVALID; - - io.buffer = buf; - io.fp = buf; - io.length = len; - - png_structp png_ptr; - png_infop info_ptr; - - /* Create and initialize the png_struct with the desired error handler - * functions. If you want to use the default stderr and longjump method, - * you can supply NULL for the last three parameters. We also supply the - * the compiler header file version, so that we know if the application - * was compiled with a compatible version of the library. REQUIRED - */ - png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0); - - if (!png_ptr) { - return PNG_NOMEM; - } - - /* Allocate/initialize the memory for image information. REQUIRED. */ - info_ptr = png_create_info_struct(png_ptr); - if (!info_ptr) { - png_destroy_read_struct(&png_ptr, png_infopp_NULL, png_infopp_NULL); - return PNG_NOMEM; - } - - png_set_read_fn(png_ptr, (void *) (&io), png_user_read_data); - png_read_png(png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, png_voidp_NULL); - - status = CreateImage(png_ptr, info_ptr); - - png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL); - - return status; -} - -// +--------------------------------------------------------------------+ - -int -PngImage::CreateImage(png_structp png_ptr, png_infop info_ptr) -{ - int status = PNG_INVALID; - - width = png_get_image_width(png_ptr, info_ptr); - height = png_get_image_height(png_ptr, info_ptr); - bpp = png_get_bit_depth(png_ptr, info_ptr); - - if (width > 0 && width < 32768 && height > 0 && height < 32768) { - // true-color: - if (bpp >= 24) { - status = PNG_OK; - - if ( png_get_channels(png_ptr, info_ptr) == 4) - alpha_loaded = true; - - image = new DWORD[width*height]; - BYTE** rows = png_get_rows(png_ptr, info_ptr); - - for (DWORD row = 0; row < height; row++) { - BYTE* p = rows[row]; - - for (DWORD col = 0; col < width; col++) { - DWORD red = *p++; - DWORD green = *p++; - DWORD blue = *p++; - DWORD alpha = 0xff; - - if ( png_get_channels(png_ptr, info_ptr) == 4) - alpha = *p++; - - image[row*width+col] = (alpha << 24) | (red << 16) | (green << 8) | blue; - } - } - } - - // paletted: - else if (bpp == 8) { - DWORD pal[256]; - - png_bytep trans_alpha; int num_trans; png_color_16p trans_color; - png_colorp palette; - int num_palette; - - png_get_tRNS(png_ptr, info_ptr, &trans_alpha, &num_trans, &trans_color); - png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette); - - if (num_trans > 0) - alpha_loaded = true; - - for (int i = 0; i < 256; i++) { - if (i < num_palette) { - DWORD red = palette[i].red; - DWORD green = palette[i].green; - DWORD blue = palette[i].blue; - DWORD alpha = 0xff; - - if (i < num_trans) - alpha = trans_alpha[i]; - - pal[i] = (alpha << 24) | (red << 16) | (green << 8) | blue; - } - - else { - pal[i] = 0; - } - } - - image = new DWORD[width*height]; - BYTE** rows = png_get_rows(png_ptr, info_ptr); - - for (DWORD row = 0; row < height; row++) { - BYTE* p = rows[row]; - - for (DWORD col = 0; col < width; col++) { - BYTE index = *p++; - image[row*width+col] = pal[index]; - } - } - } - } - - return status; -}
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