176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* pngset.c - storage of image information into info struct 376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * 476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * Last changed in libpng 1.2.43 [February 25, 2010] 576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * Copyright (c) 1998-2010 Glenn Randers-Pehrson 676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) 776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) 876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * 976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * This code is released under the libpng license. 1076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * For conditions of distribution and use, see the disclaimer 1176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * and license in png.h 1276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * 1376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * The functions here are used during reads to store data from the file 1476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * into the info struct, and during writes to store application data 1576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * into the info struct for writing into the file. This abstracts the 1676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * info struct and allows us to change the structure in the future. 1776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman */ 1876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 1976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define PNG_INTERNAL 2076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#define PNG_NO_PEDANTIC_WARNINGS 2176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#include "png.h" 2276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) 2376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 2476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_bKGD_SUPPORTED 2576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 2676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p background) 2776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 2876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "bKGD"); 2976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 3076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 3176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 3276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 3376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(&(info_ptr->background), background, png_sizeof(png_color_16)); 3476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_bKGD; 3576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 3676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 3776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 3876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_cHRM_SUPPORTED 3976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FLOATING_POINT_SUPPORTED 4076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 4176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_cHRM(png_structp png_ptr, png_infop info_ptr, 4276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman double white_x, double white_y, double red_x, double red_y, 4376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman double green_x, double green_y, double blue_x, double blue_y) 4476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 4576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "cHRM"); 4676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 4776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 4876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 4976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 5076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->x_white = (float)white_x; 5176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->y_white = (float)white_y; 5276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->x_red = (float)red_x; 5376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->y_red = (float)red_y; 5476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->x_green = (float)green_x; 5576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->y_green = (float)green_y; 5676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->x_blue = (float)blue_x; 5776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->y_blue = (float)blue_y; 5876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FIXED_POINT_SUPPORTED 5976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_x_white = (png_fixed_point)(white_x*100000.+0.5); 6076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_y_white = (png_fixed_point)(white_y*100000.+0.5); 6176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_x_red = (png_fixed_point)( red_x*100000.+0.5); 6276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_y_red = (png_fixed_point)( red_y*100000.+0.5); 6376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_x_green = (png_fixed_point)(green_x*100000.+0.5); 6476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_y_green = (png_fixed_point)(green_y*100000.+0.5); 6576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_x_blue = (png_fixed_point)( blue_x*100000.+0.5); 6676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_y_blue = (png_fixed_point)( blue_y*100000.+0.5); 6776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 6876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_cHRM; 6976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 7076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif /* PNG_FLOATING_POINT_SUPPORTED */ 7176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 7276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FIXED_POINT_SUPPORTED 7376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 7476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr, 7576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x, 7676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y, 7776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_fixed_point blue_x, png_fixed_point blue_y) 7876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 7976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "cHRM fixed"); 8076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 8176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 8276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 8376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 8476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_CHECK_cHRM_SUPPORTED 8576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_check_cHRM_fixed(png_ptr, 8676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y)) 8776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 8876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 8976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_x_white = white_x; 9076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_y_white = white_y; 9176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_x_red = red_x; 9276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_y_red = red_y; 9376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_x_green = green_x; 9476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_y_green = green_y; 9576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_x_blue = blue_x; 9676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_y_blue = blue_y; 9776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FLOATING_POINT_SUPPORTED 9876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->x_white = (float)(white_x/100000.); 9976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->y_white = (float)(white_y/100000.); 10076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->x_red = (float)( red_x/100000.); 10176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->y_red = (float)( red_y/100000.); 10276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->x_green = (float)(green_x/100000.); 10376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->y_green = (float)(green_y/100000.); 10476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->x_blue = (float)( blue_x/100000.); 10576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->y_blue = (float)( blue_y/100000.); 10676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 10776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_cHRM; 10876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 10976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 11076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif /* PNG_FIXED_POINT_SUPPORTED */ 11176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif /* PNG_cHRM_SUPPORTED */ 11276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 11376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_gAMA_SUPPORTED 11476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FLOATING_POINT_SUPPORTED 11576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 11676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma) 11776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 11876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman double png_gamma; 11976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 12076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "gAMA"); 12176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 12276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 12376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 12476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 12576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman /* Check for overflow */ 12676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (file_gamma > 21474.83) 12776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 12876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, "Limiting gamma to 21474.83"); 12976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_gamma=21474.83; 13076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 13176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 13276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_gamma = file_gamma; 13376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->gamma = (float)png_gamma; 13476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FIXED_POINT_SUPPORTED 13576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_gamma = (int)(png_gamma*100000.+.5); 13676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 13776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_gAMA; 13876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_gamma == 0.0) 13976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, "Setting gamma=0"); 14076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 14176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 14276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 14376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point 14476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int_gamma) 14576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 14676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_fixed_point png_gamma; 14776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 14876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "gAMA"); 14976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 15076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 15176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 15276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 15376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (int_gamma > (png_fixed_point)PNG_UINT_31_MAX) 15476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 15576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, "Limiting gamma to 21474.83"); 15676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_gamma=PNG_UINT_31_MAX; 15776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 15876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 15976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 16076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (int_gamma < 0) 16176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 16276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, "Setting negative gamma to zero"); 16376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_gamma = 0; 16476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 16576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 16676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_gamma = int_gamma; 16776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 16876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FLOATING_POINT_SUPPORTED 16976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->gamma = (float)(png_gamma/100000.); 17076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 17176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FIXED_POINT_SUPPORTED 17276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->int_gamma = png_gamma; 17376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 17476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_gAMA; 17576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_gamma == 0) 17676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, "Setting gamma=0"); 17776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 17876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 17976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 18076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_hIST_SUPPORTED 18176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 18276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist) 18376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 18476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int i; 18576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 18676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "hIST"); 18776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 18876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 18976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 19076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 19176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (info_ptr->num_palette == 0 || info_ptr->num_palette 19276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman > PNG_MAX_PALETTE_LENGTH) 19376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 19476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, 19576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman "Invalid palette size, hIST allocation skipped."); 19676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 19776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 19876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 19976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FREE_ME_SUPPORTED 20076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0); 20176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 20276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in 20376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * version 1.2.1 20476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman */ 20576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->hist = (png_uint_16p)png_malloc_warn(png_ptr, 20676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_uint_32)(PNG_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16))); 20776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr->hist == NULL) 20876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 20976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, "Insufficient memory for hIST chunk data."); 21076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 21176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 21276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 21376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman for (i = 0; i < info_ptr->num_palette; i++) 21476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->hist[i] = hist[i]; 21576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->hist = png_ptr->hist; 21676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_hIST; 21776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 21876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FREE_ME_SUPPORTED 21976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->free_me |= PNG_FREE_HIST; 22076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#else 22176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->flags |= PNG_FLAG_FREE_HIST; 22276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 22376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 22476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 22576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 22676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 22776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_IHDR(png_structp png_ptr, png_infop info_ptr, 22876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_uint_32 width, png_uint_32 height, int bit_depth, 22976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int color_type, int interlace_type, int compression_type, 23076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int filter_type) 23176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 23276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "IHDR"); 23376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 23476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 23576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 23676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 23776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->width = width; 23876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->height = height; 23976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->bit_depth = (png_byte)bit_depth; 24076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->color_type = (png_byte)color_type; 24176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->compression_type = (png_byte)compression_type; 24276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->filter_type = (png_byte)filter_type; 24376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->interlace_type = (png_byte)interlace_type; 24476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 24576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height, 24676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type, 24776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->compression_type, info_ptr->filter_type); 24876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 24976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) 25076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->channels = 1; 25176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR) 25276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->channels = 3; 25376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 25476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->channels = 1; 25576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA) 25676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->channels++; 25776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth); 25876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 25976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman /* Check for potential overflow */ 26076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (width > (PNG_UINT_32_MAX 26176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman >> 3) /* 8-byte RGBA pixels */ 26276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman - 64 /* bigrowbuf hack */ 26376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman - 1 /* filter byte */ 26476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman - 7*8 /* rounding of width to multiple of 8 pixels */ 26576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman - 8) /* extra max_pixel_depth pad */ 26676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->rowbytes = (png_size_t)0; 26776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 26876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width); 26976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 27076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 27176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_oFFs_SUPPORTED 27276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 27376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_oFFs(png_structp png_ptr, png_infop info_ptr, 27476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_int_32 offset_x, png_int_32 offset_y, int unit_type) 27576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 27676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "oFFs"); 27776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 27876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 27976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 28076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 28176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->x_offset = offset_x; 28276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->y_offset = offset_y; 28376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->offset_unit_type = (png_byte)unit_type; 28476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_oFFs; 28576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 28676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 28776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 28876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_pCAL_SUPPORTED 28976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 29076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_pCAL(png_structp png_ptr, png_infop info_ptr, 29176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams, 29276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_charp units, png_charpp params) 29376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 29476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_uint_32 length; 29576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int i; 29676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 29776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "pCAL"); 29876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 29976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 30076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 30176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 30276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman length = png_strlen(purpose) + 1; 30376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(3, "allocating purpose for info (%lu bytes)", 30476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (unsigned long)length); 30576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->pcal_purpose = (png_charp)png_malloc_warn(png_ptr, length); 30676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (info_ptr->pcal_purpose == NULL) 30776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 30876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, "Insufficient memory for pCAL purpose."); 30976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 31076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 31176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(info_ptr->pcal_purpose, purpose, (png_size_t)length); 31276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 31376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug(3, "storing X0, X1, type, and nparams in info"); 31476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->pcal_X0 = X0; 31576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->pcal_X1 = X1; 31676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->pcal_type = (png_byte)type; 31776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->pcal_nparams = (png_byte)nparams; 31876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 31976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman length = png_strlen(units) + 1; 32076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(3, "allocating units for info (%lu bytes)", 32176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (unsigned long)length); 32276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->pcal_units = (png_charp)png_malloc_warn(png_ptr, length); 32376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (info_ptr->pcal_units == NULL) 32476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 32576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, "Insufficient memory for pCAL units."); 32676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 32776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 32876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(info_ptr->pcal_units, units, (png_size_t)length); 32976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 33076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->pcal_params = (png_charpp)png_malloc_warn(png_ptr, 33176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_uint_32)((nparams + 1) * png_sizeof(png_charp))); 33276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (info_ptr->pcal_params == NULL) 33376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 33476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, "Insufficient memory for pCAL params."); 33576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 33676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 33776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 33876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memset(info_ptr->pcal_params, 0, (nparams + 1) * png_sizeof(png_charp)); 33976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 34076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman for (i = 0; i < nparams; i++) 34176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 34276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman length = png_strlen(params[i]) + 1; 34376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug2(3, "allocating parameter %d for info (%lu bytes)", i, 34476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (unsigned long)length); 34576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length); 34676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (info_ptr->pcal_params[i] == NULL) 34776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 34876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, "Insufficient memory for pCAL parameter."); 34976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 35076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 35176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(info_ptr->pcal_params[i], params[i], (png_size_t)length); 35276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 35376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 35476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_pCAL; 35576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FREE_ME_SUPPORTED 35676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->free_me |= PNG_FREE_PCAL; 35776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 35876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 35976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 36076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 36176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#if defined(PNG_READ_sCAL_SUPPORTED) || defined(PNG_WRITE_sCAL_SUPPORTED) 36276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FLOATING_POINT_SUPPORTED 36376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 36476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_sCAL(png_structp png_ptr, png_infop info_ptr, 36576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int unit, double width, double height) 36676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 36776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "sCAL"); 36876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 36976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 37076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 37176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 37276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->scal_unit = (png_byte)unit; 37376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->scal_pixel_width = width; 37476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->scal_pixel_height = height; 37576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 37676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_sCAL; 37776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 37876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#else 37976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FIXED_POINT_SUPPORTED 38076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 38176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_sCAL_s(png_structp png_ptr, png_infop info_ptr, 38276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int unit, png_charp swidth, png_charp sheight) 38376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 38476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_uint_32 length; 38576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 38676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "sCAL"); 38776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 38876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 38976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 39076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 39176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->scal_unit = (png_byte)unit; 39276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 39376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman length = png_strlen(swidth) + 1; 39476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(3, "allocating unit for info (%u bytes)", 39576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (unsigned int)length); 39676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->scal_s_width = (png_charp)png_malloc_warn(png_ptr, length); 39776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (info_ptr->scal_s_width == NULL) 39876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 39976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, 40076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman "Memory allocation failed while processing sCAL."); 40176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 40276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 40376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(info_ptr->scal_s_width, swidth, (png_size_t)length); 40476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 40576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman length = png_strlen(sheight) + 1; 40676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(3, "allocating unit for info (%u bytes)", 40776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (unsigned int)length); 40876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->scal_s_height = (png_charp)png_malloc_warn(png_ptr, length); 40976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (info_ptr->scal_s_height == NULL) 41076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 41176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_free (png_ptr, info_ptr->scal_s_width); 41276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->scal_s_width = NULL; 41376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, 41476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman "Memory allocation failed while processing sCAL."); 41576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 41676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 41776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(info_ptr->scal_s_height, sheight, (png_size_t)length); 41876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_sCAL; 41976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FREE_ME_SUPPORTED 42076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->free_me |= PNG_FREE_SCAL; 42176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 42276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 42376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 42476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 42576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 42676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 42776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_pHYs_SUPPORTED 42876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 42976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_pHYs(png_structp png_ptr, png_infop info_ptr, 43076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_uint_32 res_x, png_uint_32 res_y, int unit_type) 43176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 43276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "pHYs"); 43376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 43476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 43576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 43676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 43776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->x_pixels_per_unit = res_x; 43876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->y_pixels_per_unit = res_y; 43976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->phys_unit_type = (png_byte)unit_type; 44076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_pHYs; 44176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 44276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 44376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 44476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 44576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_PLTE(png_structp png_ptr, png_infop info_ptr, 44676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_colorp palette, int num_palette) 44776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 44876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 44976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "PLTE"); 45076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 45176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 45276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 45376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 45476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (num_palette < 0 || num_palette > PNG_MAX_PALETTE_LENGTH) 45576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 45676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) 45776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_error(png_ptr, "Invalid palette length"); 45876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 45976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 46076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, "Invalid palette length"); 46176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 46276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 46376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 46476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 46576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman /* It may not actually be necessary to set png_ptr->palette here; 46676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * we do it for backward compatibility with the way the png_handle_tRNS 46776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * function used to do the allocation. 46876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman */ 46976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FREE_ME_SUPPORTED 47076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0); 47176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 47276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 47376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman /* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead 47476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * of num_palette entries, in case of an invalid PNG file that has 47576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * too-large sample values. 47676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman */ 47776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->palette = (png_colorp)png_calloc(png_ptr, 47876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color)); 47976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(png_ptr->palette, palette, num_palette * png_sizeof(png_color)); 48076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->palette = png_ptr->palette; 48176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette; 48276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 48376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FREE_ME_SUPPORTED 48476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->free_me |= PNG_FREE_PLTE; 48576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#else 48676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->flags |= PNG_FLAG_FREE_PLTE; 48776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 48876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 48976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_PLTE; 49076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 49176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 49276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_sBIT_SUPPORTED 49376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 49476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_sBIT(png_structp png_ptr, png_infop info_ptr, 49576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_color_8p sig_bit) 49676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 49776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "sBIT"); 49876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 49976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 50076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 50176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 50276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(&(info_ptr->sig_bit), sig_bit, png_sizeof(png_color_8)); 50376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_sBIT; 50476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 50576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 50676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 50776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_sRGB_SUPPORTED 50876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 50976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_sRGB(png_structp png_ptr, png_infop info_ptr, int intent) 51076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 51176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "sRGB"); 51276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 51376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 51476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 51576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 51676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->srgb_intent = (png_byte)intent; 51776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_sRGB; 51876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 51976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 52076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 52176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr, 52276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int intent) 52376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 52476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_gAMA_SUPPORTED 52576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FLOATING_POINT_SUPPORTED 52676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman float file_gamma; 52776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 52876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FIXED_POINT_SUPPORTED 52976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_fixed_point int_file_gamma; 53076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 53176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 53276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_cHRM_SUPPORTED 53376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FLOATING_POINT_SUPPORTED 53476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y; 53576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 53676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_fixed_point int_white_x, int_white_y, int_red_x, int_red_y, int_green_x, 53776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int_green_y, int_blue_x, int_blue_y; 53876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 53976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM"); 54076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 54176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 54276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 54376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 54476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_set_sRGB(png_ptr, info_ptr, intent); 54576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 54676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_gAMA_SUPPORTED 54776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FLOATING_POINT_SUPPORTED 54876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman file_gamma = (float).45455; 54976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_set_gAMA(png_ptr, info_ptr, file_gamma); 55076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 55176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FIXED_POINT_SUPPORTED 55276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int_file_gamma = 45455L; 55376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma); 55476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 55576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 55676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 55776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_cHRM_SUPPORTED 55876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int_white_x = 31270L; 55976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int_white_y = 32900L; 56076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int_red_x = 64000L; 56176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int_red_y = 33000L; 56276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int_green_x = 30000L; 56376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int_green_y = 60000L; 56476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int_blue_x = 15000L; 56576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int_blue_y = 6000L; 56676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 56776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FLOATING_POINT_SUPPORTED 56876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman white_x = (float).3127; 56976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman white_y = (float).3290; 57076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman red_x = (float).64; 57176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman red_y = (float).33; 57276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman green_x = (float).30; 57376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman green_y = (float).60; 57476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman blue_x = (float).15; 57576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman blue_y = (float).06; 57676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 57776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 57876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FIXED_POINT_SUPPORTED 57976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_set_cHRM_fixed(png_ptr, info_ptr, 58076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int_white_x, int_white_y, int_red_x, int_red_y, int_green_x, 58176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int_green_y, int_blue_x, int_blue_y); 58276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 58376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FLOATING_POINT_SUPPORTED 58476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_set_cHRM(png_ptr, info_ptr, 58576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y); 58676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 58776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif /* cHRM */ 58876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 58976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif /* sRGB */ 59076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 59176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 59276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_iCCP_SUPPORTED 59376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 59476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_iCCP(png_structp png_ptr, png_infop info_ptr, 59576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_charp name, int compression_type, 59676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_charp profile, png_uint_32 proflen) 59776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 59876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_charp new_iccp_name; 59976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_charp new_iccp_profile; 60076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_uint_32 length; 60176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 60276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "iCCP"); 60376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 60476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL) 60576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 60676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 60776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman length = png_strlen(name)+1; 60876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman new_iccp_name = (png_charp)png_malloc_warn(png_ptr, length); 60976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (new_iccp_name == NULL) 61076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 61176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, "Insufficient memory to process iCCP chunk."); 61276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 61376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 61476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(new_iccp_name, name, length); 61576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman new_iccp_profile = (png_charp)png_malloc_warn(png_ptr, proflen); 61676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (new_iccp_profile == NULL) 61776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 61876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_free (png_ptr, new_iccp_name); 61976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, 62076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman "Insufficient memory to process iCCP profile."); 62176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 62276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 62376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(new_iccp_profile, profile, (png_size_t)proflen); 62476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 62576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0); 62676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 62776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->iccp_proflen = proflen; 62876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->iccp_name = new_iccp_name; 62976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->iccp_profile = new_iccp_profile; 63076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman /* Compression is always zero but is here so the API and info structure 63176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * does not have to change if we introduce multiple compression types 63276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman */ 63376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->iccp_compression = (png_byte)compression_type; 63476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FREE_ME_SUPPORTED 63576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->free_me |= PNG_FREE_ICCP; 63676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 63776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_iCCP; 63876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 63976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 64076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 64176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_TEXT_SUPPORTED 64276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 64376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, 64476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int num_text) 64576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 64676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int ret; 64776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman ret = png_set_text_2(png_ptr, info_ptr, text_ptr, num_text); 64876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (ret) 64976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_error(png_ptr, "Insufficient memory to store text"); 65076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 65176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 65276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanint /* PRIVATE */ 65376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, 65476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int num_text) 65576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 65676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int i; 65776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 65876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", ((png_ptr == NULL || 65976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->chunk_name[0] == '\0') ? 66076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman "text" : (png_const_charp)png_ptr->chunk_name)); 66176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 66276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL || num_text == 0) 66376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return(0); 66476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 66576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman /* Make sure we have enough space in the "text" array in info_struct 66676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * to hold all of the incoming text_ptr objects. 66776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman */ 66876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (info_ptr->num_text + num_text > info_ptr->max_text) 66976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 67076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (info_ptr->text != NULL) 67176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 67276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_textp old_text; 67376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int old_max; 67476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 67576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman old_max = info_ptr->max_text; 67676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->max_text = info_ptr->num_text + num_text + 8; 67776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman old_text = info_ptr->text; 67876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->text = (png_textp)png_malloc_warn(png_ptr, 67976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_uint_32)(info_ptr->max_text * png_sizeof(png_text))); 68076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (info_ptr->text == NULL) 68176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 68276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_free(png_ptr, old_text); 68376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return(1); 68476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 68576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max * 68676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_sizeof(png_text))); 68776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_free(png_ptr, old_text); 68876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 68976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 69076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 69176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->max_text = num_text + 8; 69276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->num_text = 0; 69376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->text = (png_textp)png_malloc_warn(png_ptr, 69476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_uint_32)(info_ptr->max_text * png_sizeof(png_text))); 69576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (info_ptr->text == NULL) 69676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return(1); 69776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FREE_ME_SUPPORTED 69876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->free_me |= PNG_FREE_TEXT; 69976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 70076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 70176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(3, "allocated %d entries for info_ptr->text", 70276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->max_text); 70376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 70476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman for (i = 0; i < num_text; i++) 70576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 70676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_size_t text_length, key_len; 70776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_size_t lang_len, lang_key_len; 70876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_textp textp = &(info_ptr->text[info_ptr->num_text]); 70976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 71076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (text_ptr[i].key == NULL) 71176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman continue; 71276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 71376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman key_len = png_strlen(text_ptr[i].key); 71476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 71576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (text_ptr[i].compression <= 0) 71676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 71776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman lang_len = 0; 71876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman lang_key_len = 0; 71976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 72076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 72176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 72276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_iTXt_SUPPORTED 72376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 72476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman /* Set iTXt data */ 72576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 72676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (text_ptr[i].lang != NULL) 72776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman lang_len = png_strlen(text_ptr[i].lang); 72876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 72976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman lang_len = 0; 73076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (text_ptr[i].lang_key != NULL) 73176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman lang_key_len = png_strlen(text_ptr[i].lang_key); 73276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 73376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman lang_key_len = 0; 73476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 73576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#else /* PNG_iTXt_SUPPORTED */ 73676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 73776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, "iTXt chunk not supported."); 73876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman continue; 73976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 74076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 74176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 74276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0') 74376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 74476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman text_length = 0; 74576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_iTXt_SUPPORTED 74676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (text_ptr[i].compression > 0) 74776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman textp->compression = PNG_ITXT_COMPRESSION_NONE; 74876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 74976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 75076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman textp->compression = PNG_TEXT_COMPRESSION_NONE; 75176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 75276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 75376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 75476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 75576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman text_length = png_strlen(text_ptr[i].text); 75676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman textp->compression = text_ptr[i].compression; 75776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 75876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 75976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman textp->key = (png_charp)png_malloc_warn(png_ptr, 76076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_uint_32) 76176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (key_len + text_length + lang_len + lang_key_len + 4)); 76276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (textp->key == NULL) 76376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return(1); 76476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug2(2, "Allocated %lu bytes at %x in png_set_text", 76576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_uint_32) 76676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (key_len + lang_len + lang_key_len + text_length + 4), 76776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (int)textp->key); 76876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 76976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(textp->key, text_ptr[i].key,(png_size_t)(key_len)); 77076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman *(textp->key + key_len) = '\0'; 77176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_iTXt_SUPPORTED 77276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (text_ptr[i].compression > 0) 77376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 77476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman textp->lang = textp->key + key_len + 1; 77576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(textp->lang, text_ptr[i].lang, lang_len); 77676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman *(textp->lang + lang_len) = '\0'; 77776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman textp->lang_key = textp->lang + lang_len + 1; 77876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len); 77976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman *(textp->lang_key + lang_key_len) = '\0'; 78076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman textp->text = textp->lang_key + lang_key_len + 1; 78176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 78276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 78376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 78476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 78576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_iTXt_SUPPORTED 78676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman textp->lang=NULL; 78776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman textp->lang_key=NULL; 78876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 78976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman textp->text = textp->key + key_len + 1; 79076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 79176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (text_length) 79276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(textp->text, text_ptr[i].text, 79376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_size_t)(text_length)); 79476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman *(textp->text + text_length) = '\0'; 79576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 79676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_iTXt_SUPPORTED 79776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (textp->compression > 0) 79876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 79976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman textp->text_length = 0; 80076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman textp->itxt_length = text_length; 80176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 80276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 80376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 80476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 80576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 80676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman textp->text_length = text_length; 80776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_iTXt_SUPPORTED 80876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman textp->itxt_length = 0; 80976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 81076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 81176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->num_text++; 81276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(3, "transferred text chunk %d", info_ptr->num_text); 81376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 81476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return(0); 81576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 81676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 81776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 81876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_tIME_SUPPORTED 81976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 82076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time) 82176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 82276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "tIME"); 82376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 82476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL || 82576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_ptr->mode & PNG_WROTE_tIME)) 82676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 82776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 82876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(&(info_ptr->mod_time), mod_time, png_sizeof(png_time)); 82976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_tIME; 83076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 83176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 83276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 83376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_tRNS_SUPPORTED 83476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 83576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_tRNS(png_structp png_ptr, png_infop info_ptr, 83676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_bytep trans, int num_trans, png_color_16p trans_values) 83776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 83876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "tRNS"); 83976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 84076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 84176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 84276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 84376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (trans != NULL) 84476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 84576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman /* It may not actually be necessary to set png_ptr->trans here; 84676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * we do it for backward compatibility with the way the png_handle_tRNS 84776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * function used to do the allocation. 84876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman */ 84976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 85076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FREE_ME_SUPPORTED 85176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0); 85276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 85376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 85476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman /* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */ 85576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr, 85676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_uint_32)PNG_MAX_PALETTE_LENGTH); 85776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH) 85876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans); 85976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 86076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 86176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (trans_values != NULL) 86276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 86376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int sample_max = (1 << info_ptr->bit_depth); 86476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY && 86576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (int)trans_values->gray > sample_max) || 86676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (info_ptr->color_type == PNG_COLOR_TYPE_RGB && 86776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman ((int)trans_values->red > sample_max || 86876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (int)trans_values->green > sample_max || 86976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (int)trans_values->blue > sample_max))) 87076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, 87176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman "tRNS chunk has out-of-range samples for bit_depth"); 87276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(&(info_ptr->trans_values), trans_values, 87376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_sizeof(png_color_16)); 87476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (num_trans == 0) 87576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman num_trans = 1; 87676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 87776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 87876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->num_trans = (png_uint_16)num_trans; 87976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (num_trans != 0) 88076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 88176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_tRNS; 88276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FREE_ME_SUPPORTED 88376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->free_me |= PNG_FREE_TRNS; 88476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#else 88576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->flags |= PNG_FLAG_FREE_TRNS; 88676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 88776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 88876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 88976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 89076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 89176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_sPLT_SUPPORTED 89276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 89376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_sPLT(png_structp png_ptr, 89476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_infop info_ptr, png_sPLT_tp entries, int nentries) 89576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* 89676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * entries - array of png_sPLT_t structures 89776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * to be added to the list of palettes 89876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * in the info structure. 89976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * nentries - number of palette structures to be 90076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * added. 90176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman */ 90276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 90376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_sPLT_tp np; 90476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int i; 90576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 90676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 90776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 90876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 90976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman np = (png_sPLT_tp)png_malloc_warn(png_ptr, 91076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (info_ptr->splt_palettes_num + nentries) * 91176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_uint_32)png_sizeof(png_sPLT_t)); 91276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (np == NULL) 91376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 91476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, "No memory for sPLT palettes."); 91576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 91676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 91776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 91876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(np, info_ptr->splt_palettes, 91976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t)); 92076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_free(png_ptr, info_ptr->splt_palettes); 92176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->splt_palettes=NULL; 92276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 92376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman for (i = 0; i < nentries; i++) 92476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 92576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_sPLT_tp to = np + info_ptr->splt_palettes_num + i; 92676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_sPLT_tp from = entries + i; 92776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_uint_32 length; 92876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 92976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman length = png_strlen(from->name) + 1; 93076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman to->name = (png_charp)png_malloc_warn(png_ptr, length); 93176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (to->name == NULL) 93276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 93376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, 93476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman "Out of memory while processing sPLT chunk"); 93576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman continue; 93676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 93776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(to->name, from->name, length); 93876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr, 93976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_uint_32)(from->nentries * png_sizeof(png_sPLT_entry))); 94076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (to->entries == NULL) 94176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 94276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, 94376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman "Out of memory while processing sPLT chunk"); 94476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_free(png_ptr, to->name); 94576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman to->name = NULL; 94676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman continue; 94776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 94876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(to->entries, from->entries, 94976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman from->nentries * png_sizeof(png_sPLT_entry)); 95076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman to->nentries = from->nentries; 95176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman to->depth = from->depth; 95276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 95376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 95476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->splt_palettes = np; 95576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->splt_palettes_num += nentries; 95676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_sPLT; 95776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FREE_ME_SUPPORTED 95876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->free_me |= PNG_FREE_SPLT; 95976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 96076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 96176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif /* PNG_sPLT_SUPPORTED */ 96276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 96376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED 96476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 96576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_unknown_chunks(png_structp png_ptr, 96676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns) 96776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 96876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_unknown_chunkp np; 96976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int i; 97076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 97176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0) 97276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 97376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 97476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman np = (png_unknown_chunkp)png_malloc_warn(png_ptr, 97576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_uint_32)((info_ptr->unknown_chunks_num + num_unknowns) * 97676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_sizeof(png_unknown_chunk))); 97776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (np == NULL) 97876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 97976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, 98076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman "Out of memory while processing unknown chunk."); 98176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 98276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 98376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 98476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(np, info_ptr->unknown_chunks, 98576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk)); 98676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_free(png_ptr, info_ptr->unknown_chunks); 98776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->unknown_chunks = NULL; 98876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 98976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman for (i = 0; i < num_unknowns; i++) 99076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 99176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i; 99276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_unknown_chunkp from = unknowns + i; 99376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 99476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy((png_charp)to->name, (png_charp)from->name, 99576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_sizeof(from->name)); 99676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman to->name[png_sizeof(to->name)-1] = '\0'; 99776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman to->size = from->size; 99876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman /* Note our location in the read or write sequence */ 99976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman to->location = (png_byte)(png_ptr->mode & 0xff); 100076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 100176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (from->size == 0) 100276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman to->data=NULL; 100376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 100476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 100576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman to->data = (png_bytep)png_malloc_warn(png_ptr, 100676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_uint_32)from->size); 100776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (to->data == NULL) 100876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 100976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_warning(png_ptr, 101076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman "Out of memory while processing unknown chunk."); 101176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman to->size = 0; 101276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 101376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 101476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(to->data, from->data, from->size); 101576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 101676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 101776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 101876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->unknown_chunks = np; 101976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->unknown_chunks_num += num_unknowns; 102076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FREE_ME_SUPPORTED 102176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->free_me |= PNG_FREE_UNKN; 102276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 102376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 102476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 102576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr, 102676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int chunk, int location) 102776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 102876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk < 102976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (int)info_ptr->unknown_chunks_num) 103076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->unknown_chunks[chunk].location = (png_byte)location; 103176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 103276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 103376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 103476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#if defined(PNG_1_0_X) || defined(PNG_1_2_X) 103576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#if defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \ 103676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED) 103776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 103876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_permit_empty_plte (png_structp png_ptr, int empty_plte_permitted) 103976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 104076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman /* This function is deprecated in favor of png_permit_mng_features() 104176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman and will be removed from libpng-1.3.0 */ 104276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 104376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug(1, "in png_permit_empty_plte, DEPRECATED."); 104476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 104576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL) 104676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 104776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->mng_features_permitted = (png_byte) 104876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman ((png_ptr->mng_features_permitted & (~PNG_FLAG_MNG_EMPTY_PLTE)) | 104976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman ((empty_plte_permitted & PNG_FLAG_MNG_EMPTY_PLTE))); 105076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 105176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 105276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 105376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 105476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_MNG_FEATURES_SUPPORTED 105576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_uint_32 PNGAPI 105676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features) 105776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 105876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug(1, "in png_permit_mng_features"); 105976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 106076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL) 106176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return (png_uint_32)0; 106276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->mng_features_permitted = 106376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_byte)(mng_features & PNG_ALL_MNG_FEATURES); 106476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return (png_uint_32)png_ptr->mng_features_permitted; 106576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 106676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 106776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 106876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 106976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 107076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep 107176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman chunk_list, int num_chunks) 107276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 107376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_bytep new_list, p; 107476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman int i, old_num_chunks; 107576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL) 107676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 107776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (num_chunks == 0) 107876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 107976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (keep == PNG_HANDLE_CHUNK_ALWAYS || keep == PNG_HANDLE_CHUNK_IF_SAFE) 108076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS; 108176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 108276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS; 108376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 108476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (keep == PNG_HANDLE_CHUNK_ALWAYS) 108576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS; 108676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 108776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS; 108876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 108976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 109076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (chunk_list == NULL) 109176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 109276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman old_num_chunks = png_ptr->num_chunk_list; 109376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman new_list=(png_bytep)png_malloc(png_ptr, 109476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_uint_32) 109576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (5*(num_chunks + old_num_chunks))); 109676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr->chunk_list != NULL) 109776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman { 109876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(new_list, png_ptr->chunk_list, 109976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_size_t)(5*old_num_chunks)); 110076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_free(png_ptr, png_ptr->chunk_list); 110176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->chunk_list=NULL; 110276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman } 110376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_memcpy(new_list + 5*old_num_chunks, chunk_list, 110476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman (png_size_t)(5*num_chunks)); 110576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5) 110676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman *p=(png_byte)keep; 110776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->num_chunk_list = old_num_chunks + num_chunks; 110876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->chunk_list = new_list; 110976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_FREE_ME_SUPPORTED 111076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->free_me |= PNG_FREE_LIST; 111176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 111276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 111376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 111476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 111576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_READ_USER_CHUNKS_SUPPORTED 111676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 111776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr, 111876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_user_chunk_ptr read_user_chunk_fn) 111976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 112076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug(1, "in png_set_read_user_chunk_fn"); 112176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 112276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL) 112376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 112476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 112576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->read_user_chunk_fn = read_user_chunk_fn; 112676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->user_chunk_ptr = user_chunk_ptr; 112776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 112876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 112976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 113076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_INFO_IMAGE_SUPPORTED 113176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 113276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers) 113376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 113476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug1(1, "in %s storage function", "rows"); 113576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 113676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL || info_ptr == NULL) 113776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 113876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 113976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers)) 114076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); 114176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->row_pointers = row_pointers; 114276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (row_pointers) 114376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid |= PNG_INFO_IDAT; 114476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 114576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif 114676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 114776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 114876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_compression_buffer_size(png_structp png_ptr, 114976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_uint_32 size) 115076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 115176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL) 115276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 115376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_free(png_ptr, png_ptr->zbuf); 115476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->zbuf_size = (png_size_t)size; 115576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size); 115676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->zstream.next_out = png_ptr->zbuf; 115776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; 115876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 115976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 116076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 116176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask) 116276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 116376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr && info_ptr) 116476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman info_ptr->valid &= ~mask; 116576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 116676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 116776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 116876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifndef PNG_1_0_X 116976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_ASSEMBLER_CODE_SUPPORTED 117076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* Function was added to libpng 1.2.0 and should always exist by default */ 117176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 117276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_asm_flags (png_structp png_ptr, png_uint_32 asm_flags) 117376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 117476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* Obsolete as of libpng-1.2.20 and will be removed from libpng-1.4.0 */ 117576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr != NULL) 117676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->asm_flags = 0; 117776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman asm_flags = asm_flags; /* Quiet the compiler */ 117876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 117976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 118076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* This function was added to libpng 1.2.0 */ 118176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 118276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_mmx_thresholds (png_structp png_ptr, 118376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_byte mmx_bitdepth_threshold, 118476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_uint_32 mmx_rowbytes_threshold) 118576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 118676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* Obsolete as of libpng-1.2.20 and will be removed from libpng-1.4.0 */ 118776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL) 118876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 118976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman /* Quiet the compiler */ 119076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman mmx_bitdepth_threshold = mmx_bitdepth_threshold; 119176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman mmx_rowbytes_threshold = mmx_rowbytes_threshold; 119276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 119376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */ 119476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 119576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_SET_USER_LIMITS_SUPPORTED 119676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman/* This function was added to libpng 1.2.6 */ 119776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 119876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max, 119976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_uint_32 user_height_max) 120076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 120176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman /* Images with dimensions larger than these limits will be 120276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * rejected by png_set_IHDR(). To accept any PNG datastream 120376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman * regardless of dimensions, set both limits to 0x7ffffffL. 120476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman */ 120576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (png_ptr == NULL) 120676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman return; 120776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->user_width_max = user_width_max; 120876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->user_height_max = user_height_max; 120976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 121076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */ 121176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 121276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 121376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#ifdef PNG_BENIGN_ERRORS_SUPPORTED 121476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanvoid PNGAPI 121576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartmanpng_set_benign_errors(png_structp png_ptr, int allowed) 121676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman{ 121776d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_debug(1, "in png_set_benign_errors"); 121876d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman 121976d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman if (allowed) 122076d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN; 122176d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman else 122276d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman png_ptr->flags &= ~PNG_FLAG_BENIGN_ERRORS_WARN; 122376d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman} 122476d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif /* PNG_BENIGN_ERRORS_SUPPORTED */ 122576d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif /* ?PNG_1_0_X */ 122676d05dc695b06c4e987bb8078f78032441e1430cGreg Hartman#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ 1227