diff options
Diffstat (limited to 'src/3rdparty/libpng/pngget.c')
| -rw-r--r-- | src/3rdparty/libpng/pngget.c | 256 |
1 files changed, 116 insertions, 140 deletions
diff --git a/src/3rdparty/libpng/pngget.c b/src/3rdparty/libpng/pngget.c index 38e4f9e..8611b85 100644 --- a/src/3rdparty/libpng/pngget.c +++ b/src/3rdparty/libpng/pngget.c @@ -1,8 +1,8 @@ /* pngget.c - retrieval of values from info struct * - * Last changed in libpng 1.2.37 [June 4, 2009] - * Copyright (c) 1998-2009 Glenn Randers-Pehrson + * Last changed in libpng 1.4.0 [January 3, 2010] + * Copyright (c) 1998-2010 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * @@ -12,9 +12,10 @@ * */ -#define PNG_INTERNAL +#define PNG_NO_PEDANTIC_WARNINGS #include "png.h" #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) +#include "pngpriv.h" png_uint_32 PNGAPI png_get_valid(png_structp png_ptr, png_infop info_ptr, png_uint_32 flag) @@ -26,7 +27,7 @@ png_get_valid(png_structp png_ptr, png_infop info_ptr, png_uint_32 flag) return(0); } -png_uint_32 PNGAPI +png_size_t PNGAPI png_get_rowbytes(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) @@ -36,7 +37,7 @@ png_get_rowbytes(png_structp png_ptr, png_infop info_ptr) return(0); } -#if defined(PNG_INFO_IMAGE_SUPPORTED) +#ifdef PNG_INFO_IMAGE_SUPPORTED png_bytepp PNGAPI png_get_rows(png_structp png_ptr, png_infop info_ptr) { @@ -117,7 +118,7 @@ png_uint_32 PNGAPI png_get_x_pixels_per_meter(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) -#if defined(PNG_pHYs_SUPPORTED) +#ifdef PNG_pHYs_SUPPORTED if (info_ptr->valid & PNG_INFO_pHYs) { png_debug1(1, "in %s retrieval function", "png_get_x_pixels_per_meter"); @@ -138,7 +139,7 @@ png_uint_32 PNGAPI png_get_y_pixels_per_meter(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) -#if defined(PNG_pHYs_SUPPORTED) +#ifdef PNG_pHYs_SUPPORTED if (info_ptr->valid & PNG_INFO_pHYs) { png_debug1(1, "in %s retrieval function", "png_get_y_pixels_per_meter"); @@ -159,7 +160,7 @@ png_uint_32 PNGAPI png_get_pixels_per_meter(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) -#if defined(PNG_pHYs_SUPPORTED) +#ifdef PNG_pHYs_SUPPORTED if (info_ptr->valid & PNG_INFO_pHYs) { png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter"); @@ -182,13 +183,15 @@ float PNGAPI png_get_pixel_aspect_ratio(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) -#if defined(PNG_pHYs_SUPPORTED) +#ifdef PNG_pHYs_SUPPORTED if (info_ptr->valid & PNG_INFO_pHYs) { png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio"); + if (info_ptr->x_pixels_per_unit == 0) return ((float)0.0); + else return ((float)((float)info_ptr->y_pixels_per_unit /(float)info_ptr->x_pixels_per_unit)); @@ -204,7 +207,7 @@ png_int_32 PNGAPI png_get_x_offset_microns(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) -#if defined(PNG_oFFs_SUPPORTED) +#ifdef PNG_oFFs_SUPPORTED if (info_ptr->valid & PNG_INFO_oFFs) { @@ -227,7 +230,7 @@ png_get_y_offset_microns(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) -#if defined(PNG_oFFs_SUPPORTED) +#ifdef PNG_oFFs_SUPPORTED if (info_ptr->valid & PNG_INFO_oFFs) { png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns"); @@ -249,7 +252,7 @@ png_get_x_offset_pixels(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) -#if defined(PNG_oFFs_SUPPORTED) +#ifdef PNG_oFFs_SUPPORTED if (info_ptr->valid & PNG_INFO_oFFs) { png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns"); @@ -271,7 +274,7 @@ png_get_y_offset_pixels(png_structp png_ptr, png_infop info_ptr) { if (png_ptr != NULL && info_ptr != NULL) -#if defined(PNG_oFFs_SUPPORTED) +#ifdef PNG_oFFs_SUPPORTED if (info_ptr->valid & PNG_INFO_oFFs) { png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns"); @@ -324,7 +327,7 @@ png_get_y_offset_inches(png_structp png_ptr, png_infop info_ptr) *.00003937); } -#if defined(PNG_pHYs_SUPPORTED) +#ifdef PNG_pHYs_SUPPORTED png_uint_32 PNGAPI png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type) @@ -334,6 +337,7 @@ png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr, if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs)) { png_debug1(1, "in %s retrieval function", "pHYs"); + if (res_x != NULL) { *res_x = info_ptr->x_pixels_per_unit; @@ -382,7 +386,7 @@ png_get_signature(png_structp png_ptr, png_infop info_ptr) return (NULL); } -#if defined(PNG_bKGD_SUPPORTED) +#ifdef PNG_bKGD_SUPPORTED png_uint_32 PNGAPI png_get_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p *background) @@ -391,6 +395,7 @@ png_get_bKGD(png_structp png_ptr, png_infop info_ptr, && background != NULL) { png_debug1(1, "in %s retrieval function", "bKGD"); + *background = &(info_ptr->background); return (PNG_INFO_bKGD); } @@ -398,7 +403,7 @@ png_get_bKGD(png_structp png_ptr, png_infop info_ptr, } #endif -#if defined(PNG_cHRM_SUPPORTED) +#ifdef PNG_cHRM_SUPPORTED #ifdef PNG_FLOATING_POINT_SUPPORTED png_uint_32 PNGAPI png_get_cHRM(png_structp png_ptr, png_infop info_ptr, @@ -408,6 +413,7 @@ png_get_cHRM(png_structp png_ptr, png_infop info_ptr, if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM)) { png_debug1(1, "in %s retrieval function", "cHRM"); + if (white_x != NULL) *white_x = (double)info_ptr->x_white; if (white_y != NULL) @@ -436,9 +442,10 @@ png_get_cHRM_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y, png_fixed_point *blue_x, png_fixed_point *blue_y) { + png_debug1(1, "in %s retrieval function", "cHRM"); + if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM)) { - png_debug1(1, "in %s retrieval function", "cHRM"); if (white_x != NULL) *white_x = info_ptr->int_x_white; if (white_y != NULL) @@ -462,15 +469,16 @@ png_get_cHRM_fixed(png_structp png_ptr, png_infop info_ptr, #endif #endif -#if defined(PNG_gAMA_SUPPORTED) +#ifdef PNG_gAMA_SUPPORTED #ifdef PNG_FLOATING_POINT_SUPPORTED png_uint_32 PNGAPI png_get_gAMA(png_structp png_ptr, png_infop info_ptr, double *file_gamma) { + png_debug1(1, "in %s retrieval function", "gAMA"); + if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA) && file_gamma != NULL) { - png_debug1(1, "in %s retrieval function", "gAMA"); *file_gamma = (double)info_ptr->gamma; return (PNG_INFO_gAMA); } @@ -482,10 +490,11 @@ png_uint_32 PNGAPI png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point *int_file_gamma) { + png_debug1(1, "in %s retrieval function", "gAMA"); + if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA) && int_file_gamma != NULL) { - png_debug1(1, "in %s retrieval function", "gAMA"); *int_file_gamma = info_ptr->int_gamma; return (PNG_INFO_gAMA); } @@ -494,14 +503,15 @@ png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, #endif #endif -#if defined(PNG_sRGB_SUPPORTED) +#ifdef PNG_sRGB_SUPPORTED png_uint_32 PNGAPI png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent) { + png_debug1(1, "in %s retrieval function", "sRGB"); + if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB) && file_srgb_intent != NULL) { - png_debug1(1, "in %s retrieval function", "sRGB"); *file_srgb_intent = (int)info_ptr->srgb_intent; return (PNG_INFO_sRGB); } @@ -509,16 +519,17 @@ png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent) } #endif -#if defined(PNG_iCCP_SUPPORTED) +#ifdef PNG_iCCP_SUPPORTED png_uint_32 PNGAPI png_get_iCCP(png_structp png_ptr, png_infop info_ptr, png_charpp name, int *compression_type, png_charpp profile, png_uint_32 *proflen) { + png_debug1(1, "in %s retrieval function", "iCCP"); + if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP) && name != NULL && profile != NULL && proflen != NULL) { - png_debug1(1, "in %s retrieval function", "iCCP"); *name = info_ptr->iccp_name; *profile = info_ptr->iccp_profile; /* Compression_type is a dummy so the API won't have to change @@ -532,7 +543,7 @@ png_get_iCCP(png_structp png_ptr, png_infop info_ptr, } #endif -#if defined(PNG_sPLT_SUPPORTED) +#ifdef PNG_sPLT_SUPPORTED png_uint_32 PNGAPI png_get_sPLT(png_structp png_ptr, png_infop info_ptr, png_sPLT_tpp spalettes) @@ -546,14 +557,15 @@ png_get_sPLT(png_structp png_ptr, png_infop info_ptr, } #endif -#if defined(PNG_hIST_SUPPORTED) +#ifdef PNG_hIST_SUPPORTED png_uint_32 PNGAPI png_get_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p *hist) { + png_debug1(1, "in %s retrieval function", "hIST"); + if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST) && hist != NULL) { - png_debug1(1, "in %s retrieval function", "hIST"); *hist = info_ptr->hist; return (PNG_INFO_hIST); } @@ -568,62 +580,48 @@ png_get_IHDR(png_structp png_ptr, png_infop info_ptr, int *filter_type) { - if (png_ptr != NULL && info_ptr != NULL && width != NULL && height != NULL && - bit_depth != NULL && color_type != NULL) - { - png_debug1(1, "in %s retrieval function", "IHDR"); - *width = info_ptr->width; - *height = info_ptr->height; - *bit_depth = info_ptr->bit_depth; - if (info_ptr->bit_depth < 1 || info_ptr->bit_depth > 16) - png_error(png_ptr, "Invalid bit depth"); - - *color_type = info_ptr->color_type; + png_debug1(1, "in %s retrieval function", "IHDR"); - if (info_ptr->color_type > 6) - png_error(png_ptr, "Invalid color type"); - - if (compression_type != NULL) - *compression_type = info_ptr->compression_type; + if (png_ptr == NULL || info_ptr == NULL || width == NULL || + height == NULL || bit_depth == NULL || color_type == NULL) + return (0); - if (filter_type != NULL) - *filter_type = info_ptr->filter_type; + *width = info_ptr->width; + *height = info_ptr->height; + *bit_depth = info_ptr->bit_depth; + *color_type = info_ptr->color_type; - if (interlace_type != NULL) - *interlace_type = info_ptr->interlace_type; + if (compression_type != NULL) + *compression_type = info_ptr->compression_type; - /* Check for potential overflow of rowbytes */ - if (*width == 0 || *width > PNG_UINT_31_MAX) - png_error(png_ptr, "Invalid image width"); + if (filter_type != NULL) + *filter_type = info_ptr->filter_type; - if (*height == 0 || *height > PNG_UINT_31_MAX) - png_error(png_ptr, "Invalid image height"); + if (interlace_type != NULL) + *interlace_type = info_ptr->interlace_type; - if (info_ptr->width > (PNG_UINT_32_MAX - >> 3) /* 8-byte RGBA pixels */ - - 64 /* bigrowbuf hack */ - - 1 /* filter byte */ - - 7*8 /* rounding of width to multiple of 8 pixels */ - - 8) /* extra max_pixel_depth pad */ - { - png_warning(png_ptr, - "Width too large for libpng to process image data."); - } + /* This is redundant if we can be sure that the info_ptr values were all + * assigned in png_set_IHDR(). We do the check anyhow in case an + * application has ignored our advice not to mess with the members + * of info_ptr directly. + */ + png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height, + info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type, + info_ptr->compression_type, info_ptr->filter_type); - return (1); - } - return (0); + return (1); } -#if defined(PNG_oFFs_SUPPORTED) +#ifdef PNG_oFFs_SUPPORTED png_uint_32 PNGAPI png_get_oFFs(png_structp png_ptr, png_infop info_ptr, png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type) { + png_debug1(1, "in %s retrieval function", "oFFs"); + if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs) && offset_x != NULL && offset_y != NULL && unit_type != NULL) { - png_debug1(1, "in %s retrieval function", "oFFs"); *offset_x = info_ptr->x_offset; *offset_y = info_ptr->y_offset; *unit_type = (int)info_ptr->offset_unit_type; @@ -633,17 +631,18 @@ png_get_oFFs(png_structp png_ptr, png_infop info_ptr, } #endif -#if defined(PNG_pCAL_SUPPORTED) +#ifdef PNG_pCAL_SUPPORTED png_uint_32 PNGAPI png_get_pCAL(png_structp png_ptr, png_infop info_ptr, png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams, png_charp *units, png_charpp *params) { + png_debug1(1, "in %s retrieval function", "pCAL"); + if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL) && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL && nparams != NULL && units != NULL && params != NULL) { - png_debug1(1, "in %s retrieval function", "pCAL"); *purpose = info_ptr->pcal_purpose; *X0 = info_ptr->pcal_X0; *X1 = info_ptr->pcal_X1; @@ -657,7 +656,7 @@ png_get_pCAL(png_structp png_ptr, png_infop info_ptr, } #endif -#if defined(PNG_sCAL_SUPPORTED) +#ifdef PNG_sCAL_SUPPORTED #ifdef PNG_FLOATING_POINT_SUPPORTED png_uint_32 PNGAPI png_get_sCAL(png_structp png_ptr, png_infop info_ptr, @@ -693,18 +692,18 @@ png_get_sCAL_s(png_structp png_ptr, png_infop info_ptr, #endif #endif -#if defined(PNG_pHYs_SUPPORTED) +#ifdef PNG_pHYs_SUPPORTED png_uint_32 PNGAPI png_get_pHYs(png_structp png_ptr, png_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type) { png_uint_32 retval = 0; + png_debug1(1, "in %s retrieval function", "pHYs"); + if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs)) { - png_debug1(1, "in %s retrieval function", "pHYs"); - if (res_x != NULL) { *res_x = info_ptr->x_pixels_per_unit; @@ -731,10 +730,11 @@ png_uint_32 PNGAPI png_get_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp *palette, int *num_palette) { + png_debug1(1, "in %s retrieval function", "PLTE"); + if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_PLTE) && palette != NULL) { - png_debug1(1, "in %s retrieval function", "PLTE"); *palette = info_ptr->palette; *num_palette = info_ptr->num_palette; png_debug1(3, "num_palette = %d", *num_palette); @@ -743,14 +743,15 @@ png_get_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp *palette, return (0); } -#if defined(PNG_sBIT_SUPPORTED) +#ifdef PNG_sBIT_SUPPORTED png_uint_32 PNGAPI png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit) { + png_debug1(1, "in %s retrieval function", "sBIT"); + if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT) && sig_bit != NULL) { - png_debug1(1, "in %s retrieval function", "sBIT"); *sig_bit = &(info_ptr->sig_bit); return (PNG_INFO_sBIT); } @@ -758,7 +759,7 @@ png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit) } #endif -#if defined(PNG_TEXT_SUPPORTED) +#ifdef PNG_TEXT_SUPPORTED png_uint_32 PNGAPI png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr, int *num_text) @@ -783,14 +784,15 @@ png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr, } #endif -#if defined(PNG_tIME_SUPPORTED) +#ifdef PNG_tIME_SUPPORTED png_uint_32 PNGAPI png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time) { + png_debug1(1, "in %s retrieval function", "tIME"); + if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME) && mod_time != NULL) { - png_debug1(1, "in %s retrieval function", "tIME"); *mod_time = &(info_ptr->mod_time); return (PNG_INFO_tIME); } @@ -798,36 +800,37 @@ png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time) } #endif -#if defined(PNG_tRNS_SUPPORTED) +#ifdef PNG_tRNS_SUPPORTED png_uint_32 PNGAPI png_get_tRNS(png_structp png_ptr, png_infop info_ptr, - png_bytep *trans, int *num_trans, png_color_16p *trans_values) + png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color) { png_uint_32 retval = 0; if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS)) { png_debug1(1, "in %s retrieval function", "tRNS"); + if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) { - if (trans != NULL) + if (trans_alpha != NULL) { - *trans = info_ptr->trans; + *trans_alpha = info_ptr->trans_alpha; retval |= PNG_INFO_tRNS; } - if (trans_values != NULL) - *trans_values = &(info_ptr->trans_values); + if (trans_color != NULL) + *trans_color = &(info_ptr->trans_color); } else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */ { - if (trans_values != NULL) + if (trans_color != NULL) { - *trans_values = &(info_ptr->trans_values); + *trans_color = &(info_ptr->trans_color); retval |= PNG_INFO_tRNS; } - if (trans != NULL) - *trans = NULL; + if (trans_alpha != NULL) + *trans_alpha = NULL; } if (num_trans != NULL) { @@ -839,7 +842,7 @@ png_get_tRNS(png_structp png_ptr, png_infop info_ptr, } #endif -#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) +#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED png_uint_32 PNGAPI png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr, png_unknown_chunkpp unknowns) @@ -853,7 +856,7 @@ png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr, } #endif -#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED) +#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED png_byte PNGAPI png_get_rgb_to_gray_status (png_structp png_ptr) { @@ -861,7 +864,7 @@ png_get_rgb_to_gray_status (png_structp png_ptr) } #endif -#if defined(PNG_USER_CHUNKS_SUPPORTED) +#ifdef PNG_USER_CHUNKS_SUPPORTED png_voidp PNGAPI png_get_user_chunk_ptr(png_structp png_ptr) { @@ -870,74 +873,47 @@ png_get_user_chunk_ptr(png_structp png_ptr) #endif #ifdef PNG_WRITE_SUPPORTED -png_uint_32 PNGAPI +png_size_t PNGAPI png_get_compression_buffer_size(png_structp png_ptr) { - return (png_uint_32)(png_ptr? png_ptr->zbuf_size : 0L); + return (png_ptr ? png_ptr->zbuf_size : 0L); } #endif -#ifdef PNG_ASSEMBLER_CODE_SUPPORTED -#ifndef PNG_1_0_X -/* This function was added to libpng 1.2.0 and should exist by default */ -png_uint_32 PNGAPI -png_get_asm_flags (png_structp png_ptr) -{ - /* Obsolete, to be removed from libpng-1.4.0 */ - return (png_ptr? 0L: 0L); -} -/* This function was added to libpng 1.2.0 and should exist by default */ +#ifdef PNG_SET_USER_LIMITS_SUPPORTED +/* These functions were added to libpng 1.2.6 */ png_uint_32 PNGAPI -png_get_asm_flagmask (int flag_select) +png_get_user_width_max (png_structp png_ptr) { - /* Obsolete, to be removed from libpng-1.4.0 */ - flag_select=flag_select; - return 0L; + return (png_ptr? png_ptr->user_width_max : 0); } - - /* GRR: could add this: && defined(PNG_MMX_CODE_SUPPORTED) */ -/* This function was added to libpng 1.2.0 */ png_uint_32 PNGAPI -png_get_mmx_flagmask (int flag_select, int *compilerID) -{ - /* Obsolete, to be removed from libpng-1.4.0 */ - flag_select=flag_select; - *compilerID = -1; /* unknown (i.e., no asm/MMX code compiled) */ - return 0L; -} - -/* This function was added to libpng 1.2.0 */ -png_byte PNGAPI -png_get_mmx_bitdepth_threshold (png_structp png_ptr) +png_get_user_height_max (png_structp png_ptr) { - /* Obsolete, to be removed from libpng-1.4.0 */ - return (png_ptr? 0: 0); + return (png_ptr? png_ptr->user_height_max : 0); } - -/* This function was added to libpng 1.2.0 */ +/* This function was added to libpng 1.4.0 */ png_uint_32 PNGAPI -png_get_mmx_rowbytes_threshold (png_structp png_ptr) +png_get_chunk_cache_max (png_structp png_ptr) { - /* Obsolete, to be removed from libpng-1.4.0 */ - return (png_ptr? 0L: 0L); + return (png_ptr? png_ptr->user_chunk_cache_max? 0x7fffffffL : + png_ptr->user_chunk_cache_max - 1 : 0); } -#endif /* ?PNG_1_0_X */ -#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */ +#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */ -#ifdef PNG_SET_USER_LIMITS_SUPPORTED -/* These functions were added to libpng 1.2.6 */ +#ifdef PNG_IO_STATE_SUPPORTED png_uint_32 PNGAPI -png_get_user_width_max (png_structp png_ptr) +png_get_io_state (png_structp png_ptr) { - return (png_ptr? png_ptr->user_width_max : 0); + return png_ptr->io_state; } -png_uint_32 PNGAPI -png_get_user_height_max (png_structp png_ptr) + +png_bytep PNGAPI +png_get_io_chunk_name (png_structp png_ptr) { - return (png_ptr? png_ptr->user_height_max : 0); + return png_ptr->chunk_name; } -#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */ - +#endif /* ?PNG_IO_STATE_SUPPORTED */ #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ |