/* pngget.c - retrieval of values from info struct
*
- * libpng 1.2.7 - September 12, 2004
- * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2004 Glenn Randers-Pehrson
+ * Last changed in libpng 1.4.2 [May 6, 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.)
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
*/
-#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)
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->valid & flag);
+
else
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)
return(info_ptr->rowbytes);
+
else
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)
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->row_pointers);
+
else
return(0);
}
#endif
#ifdef PNG_EASY_ACCESS_SUPPORTED
-/* easy access to info, added in libpng-0.99 */
+/* Easy access to info, added in libpng-0.99 */
png_uint_32 PNGAPI
png_get_image_width(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- {
return info_ptr->width;
- }
+
return (0);
}
png_get_image_height(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- {
return info_ptr->height;
- }
+
return (0);
}
png_get_bit_depth(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- {
return info_ptr->bit_depth;
- }
+
return (0);
}
png_get_color_type(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- {
return info_ptr->color_type;
- }
+
return (0);
}
png_get_filter_type(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- {
return info_ptr->filter_type;
- }
+
return (0);
}
png_get_interlace_type(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- {
return info_ptr->interlace_type;
- }
+
return (0);
}
png_get_compression_type(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
- {
return info_ptr->compression_type;
- }
+
return (0);
}
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\n", "png_get_x_pixels_per_meter");
- if(info_ptr->phys_unit_type != PNG_RESOLUTION_METER)
+ png_debug1(1, "in %s retrieval function", "png_get_x_pixels_per_meter");
+
+ if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER)
return (0);
- else return (info_ptr->x_pixels_per_unit);
+
+ else
+ return (info_ptr->x_pixels_per_unit);
}
#else
return (0);
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\n", "png_get_y_pixels_per_meter");
- if(info_ptr->phys_unit_type != PNG_RESOLUTION_METER)
+ png_debug1(1, "in %s retrieval function", "png_get_y_pixels_per_meter");
+
+ if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER)
return (0);
- else return (info_ptr->y_pixels_per_unit);
+
+ else
+ return (info_ptr->y_pixels_per_unit);
}
#else
return (0);
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\n", "png_get_pixels_per_meter");
- if(info_ptr->phys_unit_type != PNG_RESOLUTION_METER ||
+ png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter");
+
+ if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER ||
info_ptr->x_pixels_per_unit != info_ptr->y_pixels_per_unit)
return (0);
- else return (info_ptr->x_pixels_per_unit);
+
+ else
+ return (info_ptr->x_pixels_per_unit);
}
#else
return (0);
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\n", "png_get_aspect_ratio");
+ 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));
}
#else
- return (0.0);
+ return (0.0);
#endif
return ((float)0.0);
}
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)
{
- png_debug1(1, "in %s retrieval function\n", "png_get_x_offset_microns");
- if(info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER)
+ png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
+
+ if (info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER)
return (0);
- else return (info_ptr->x_offset);
+
+ else
+ return (info_ptr->x_offset);
}
#else
- return (0);
+ return (0);
#endif
return (0);
}
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\n", "png_get_y_offset_microns");
- if(info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER)
+ png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
+
+ if (info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER)
return (0);
- else return (info_ptr->y_offset);
+
+ else
+ return (info_ptr->y_offset);
}
#else
return (0);
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\n", "png_get_x_offset_microns");
- if(info_ptr->offset_unit_type != PNG_OFFSET_PIXEL)
+ png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
+
+ if (info_ptr->offset_unit_type != PNG_OFFSET_PIXEL)
return (0);
- else return (info_ptr->x_offset);
+
+ else
+ return (info_ptr->x_offset);
}
#else
return (0);
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\n", "png_get_y_offset_microns");
- if(info_ptr->offset_unit_type != PNG_OFFSET_PIXEL)
+ png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
+
+ if (info_ptr->offset_unit_type != PNG_OFFSET_PIXEL)
return (0);
- else return (info_ptr->y_offset);
+
+ else
+ return (info_ptr->y_offset);
}
#else
return (0);
*.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)
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
{
- png_debug1(1, "in %s retrieval function\n", "pHYs");
+ png_debug1(1, "in %s retrieval function", "pHYs");
+
if (res_x != NULL)
{
*res_x = info_ptr->x_pixels_per_unit;
{
*unit_type = (int)info_ptr->phys_unit_type;
retval |= PNG_INFO_pHYs;
- if(*unit_type == 1)
+ if (*unit_type == 1)
{
if (res_x != NULL) *res_x = (png_uint_32)(*res_x * .0254 + .50);
if (res_y != NULL) *res_y = (png_uint_32)(*res_y * .0254 + .50);
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)
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD)
&& background != NULL)
{
- png_debug1(1, "in %s retrieval function\n", "bKGD");
+ png_debug1(1, "in %s retrieval function", "bKGD");
+
*background = &(info_ptr->background);
return (PNG_INFO_bKGD);
}
}
#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,
{
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
{
- png_debug1(1, "in %s retrieval function\n", "cHRM");
+ png_debug1(1, "in %s retrieval function", "cHRM");
+
if (white_x != NULL)
*white_x = (double)info_ptr->x_white;
if (white_y != NULL)
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\n", "cHRM");
if (white_x != NULL)
*white_x = info_ptr->int_x_white;
if (white_y != NULL)
#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\n", "gAMA");
*file_gamma = (double)info_ptr->gamma;
return (PNG_INFO_gAMA);
}
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\n", "gAMA");
*int_file_gamma = info_ptr->int_gamma;
return (PNG_INFO_gAMA);
}
#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\n", "sRGB");
*file_srgb_intent = (int)info_ptr->srgb_intent;
return (PNG_INFO_sRGB);
}
}
#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\n", "iCCP");
*name = info_ptr->iccp_name;
*profile = info_ptr->iccp_profile;
- /* compression_type is a dummy so the API won't have to change
- if we introduce multiple compression types later. */
+ /* Compression_type is a dummy so the API won't have to change
+ * if we introduce multiple compression types later.
+ */
*proflen = (int)info_ptr->iccp_proflen;
*compression_type = (int)info_ptr->iccp_compression;
return (PNG_INFO_iCCP);
}
#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)
{
if (png_ptr != NULL && info_ptr != NULL && spalettes != NULL)
+ {
*spalettes = info_ptr->splt_palettes;
- return ((png_uint_32)info_ptr->splt_palettes_num);
+ return ((png_uint_32)info_ptr->splt_palettes_num);
+ }
+ return (0);
}
#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\n", "hIST");
*hist = info_ptr->hist;
return (PNG_INFO_hIST);
}
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\n", "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;
- if (info_ptr->color_type > 6)
- png_error(png_ptr, "Invalid color type");
- if (compression_type != NULL)
- *compression_type = info_ptr->compression_type;
- if (filter_type != NULL)
- *filter_type = info_ptr->filter_type;
- if (interlace_type != NULL)
- *interlace_type = info_ptr->interlace_type;
-
- /* check for potential overflow of rowbytes */
- if (width == 0 || *width > PNG_UINT_31_MAX)
- png_error(png_ptr, "Invalid image width");
- if (height == 0 || *height > PNG_UINT_31_MAX)
- png_error(png_ptr, "Invalid image height");
- 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.");
- }
- return (1);
- }
- return (0);
+ png_debug1(1, "in %s retrieval function", "IHDR");
+
+ if (png_ptr == NULL || info_ptr == NULL || width == NULL ||
+ height == NULL || bit_depth == NULL || color_type == NULL)
+ return (0);
+
+ *width = info_ptr->width;
+ *height = info_ptr->height;
+ *bit_depth = info_ptr->bit_depth;
+ *color_type = info_ptr->color_type;
+
+ if (compression_type != NULL)
+ *compression_type = info_ptr->compression_type;
+
+ if (filter_type != NULL)
+ *filter_type = info_ptr->filter_type;
+
+ if (interlace_type != NULL)
+ *interlace_type = info_ptr->interlace_type;
+
+ /* 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);
}
-#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\n", "oFFs");
*offset_x = info_ptr->x_offset;
*offset_y = info_ptr->y_offset;
*unit_type = (int)info_ptr->offset_unit_type;
}
#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)
+ && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
+ nparams != NULL && units != NULL && params != NULL)
{
- png_debug1(1, "in %s retrieval function\n", "pCAL");
*purpose = info_ptr->pcal_purpose;
*X0 = info_ptr->pcal_X0;
*X1 = info_ptr->pcal_X1;
}
#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,
int *unit, double *width, double *height)
{
if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->valid & PNG_INFO_sCAL))
+ (info_ptr->valid & PNG_INFO_sCAL))
{
*unit = info_ptr->scal_unit;
*width = info_ptr->scal_pixel_width;
int *unit, png_charpp width, png_charpp height)
{
if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->valid & PNG_INFO_sCAL))
+ (info_ptr->valid & PNG_INFO_sCAL))
{
*unit = info_ptr->scal_unit;
*width = info_ptr->scal_s_width;
#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\n", "pHYs");
if (res_x != NULL)
{
*res_x = info_ptr->x_pixels_per_unit;
retval |= PNG_INFO_pHYs;
}
+
if (res_y != NULL)
{
*res_y = info_ptr->y_pixels_per_unit;
retval |= PNG_INFO_pHYs;
}
+
if (unit_type != NULL)
{
*unit_type = (int)info_ptr->phys_unit_type;
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\n", "PLTE");
*palette = info_ptr->palette;
*num_palette = info_ptr->num_palette;
- png_debug1(3, "num_palette = %d\n", *num_palette);
+ png_debug1(3, "num_palette = %d", *num_palette);
return (PNG_INFO_PLTE);
}
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\n", "sBIT");
*sig_bit = &(info_ptr->sig_bit);
return (PNG_INFO_sBIT);
}
}
#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)
{
if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0)
{
- png_debug1(1, "in %s retrieval function\n",
+ png_debug1(1, "in %s retrieval function",
(png_ptr->chunk_name[0] == '\0' ? "text"
: (png_const_charp)png_ptr->chunk_name));
+
if (text_ptr != NULL)
*text_ptr = info_ptr->text;
+
if (num_text != NULL)
*num_text = info_ptr->num_text;
+
return ((png_uint_32)info_ptr->num_text);
}
if (num_text != NULL)
}
#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\n", "tIME");
*mod_time = &(info_ptr->mod_time);
return (PNG_INFO_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\n", "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)
+ if (num_trans != NULL)
{
*num_trans = info_ptr->num_trans;
retval |= PNG_INFO_tRNS;
}
#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)
{
if (png_ptr != NULL && info_ptr != NULL && unknowns != NULL)
+ {
*unknowns = info_ptr->unknown_chunks;
- return ((png_uint_32)info_ptr->unknown_chunks_num);
+ return ((png_uint_32)info_ptr->unknown_chunks_num);
+ }
+ return (0);
}
#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)
{
}
#endif
-#if defined(PNG_USER_CHUNKS_SUPPORTED)
+#ifdef PNG_USER_CHUNKS_SUPPORTED
png_voidp PNGAPI
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
-#ifndef PNG_1_0_X
-#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
-/* 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 and were enabled
+ * by default in libpng-1.4.0 */
png_uint_32 PNGAPI
-png_get_asm_flags (png_structp png_ptr)
+png_get_user_width_max (png_structp png_ptr)
{
- return (png_uint_32)(png_ptr? png_ptr->asm_flags : 0L);
+ return (png_ptr? png_ptr->user_width_max : 0);
}
-
-/* this function was added to libpng 1.2.0 and should exist by default */
png_uint_32 PNGAPI
-png_get_asm_flagmask (int flag_select)
+png_get_user_height_max (png_structp png_ptr)
{
- png_uint_32 settable_asm_flags = 0;
-
- if (flag_select & PNG_SELECT_READ)
- settable_asm_flags |=
- PNG_ASM_FLAG_MMX_READ_COMBINE_ROW |
- PNG_ASM_FLAG_MMX_READ_INTERLACE |
- PNG_ASM_FLAG_MMX_READ_FILTER_SUB |
- PNG_ASM_FLAG_MMX_READ_FILTER_UP |
- PNG_ASM_FLAG_MMX_READ_FILTER_AVG |
- PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
- /* no non-MMX flags yet */
-
-#if 0
- /* GRR: no write-flags yet, either, but someday... */
- if (flag_select & PNG_SELECT_WRITE)
- settable_asm_flags |=
- PNG_ASM_FLAG_MMX_WRITE_ [whatever] ;
-#endif /* 0 */
-
- return settable_asm_flags; /* _theoretically_ settable capabilities only */
+ return (png_ptr? png_ptr->user_height_max : 0);
}
-#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
-
-
-#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
- /* GRR: could add this: && defined(PNG_MMX_CODE_SUPPORTED) */
-/* 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_flagmask (int flag_select, int *compilerID)
+png_get_chunk_cache_max (png_structp png_ptr)
{
- png_uint_32 settable_mmx_flags = 0;
-
- if (flag_select & PNG_SELECT_READ)
- settable_mmx_flags |=
- PNG_ASM_FLAG_MMX_READ_COMBINE_ROW |
- PNG_ASM_FLAG_MMX_READ_INTERLACE |
- PNG_ASM_FLAG_MMX_READ_FILTER_SUB |
- PNG_ASM_FLAG_MMX_READ_FILTER_UP |
- PNG_ASM_FLAG_MMX_READ_FILTER_AVG |
- PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
-#if 0
- /* GRR: no MMX write support yet, but someday... */
- if (flag_select & PNG_SELECT_WRITE)
- settable_mmx_flags |=
- PNG_ASM_FLAG_MMX_WRITE_ [whatever] ;
-#endif /* 0 */
-
- if (compilerID != NULL) {
-#ifdef PNG_USE_PNGVCRD
- *compilerID = 1; /* MSVC */
-#else
-#ifdef PNG_USE_PNGGCCRD
- *compilerID = 2; /* gcc/gas */
-#else
- *compilerID = -1; /* unknown (i.e., no asm/MMX code compiled) */
-#endif
-#endif
- }
-
- return settable_mmx_flags; /* _theoretically_ settable capabilities only */
+ return (png_ptr? png_ptr->user_chunk_cache_max : 0);
}
-
-/* this function was added to libpng 1.2.0 */
-png_byte PNGAPI
-png_get_mmx_bitdepth_threshold (png_structp png_ptr)
+/* This function was added to libpng 1.4.1 */
+png_alloc_size_t PNGAPI
+png_get_chunk_malloc_max (png_structp png_ptr)
{
- return (png_byte)(png_ptr? png_ptr->mmx_bitdepth_threshold : 0);
+ return (png_ptr?
+ png_ptr->user_chunk_malloc_max : 0);
}
+#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
-/* this function was added to libpng 1.2.0 */
+/* These functions were added to libpng 1.4.0 */
+#ifdef PNG_IO_STATE_SUPPORTED
png_uint_32 PNGAPI
-png_get_mmx_rowbytes_threshold (png_structp png_ptr)
+png_get_io_state (png_structp png_ptr)
{
- return (png_uint_32)(png_ptr? png_ptr->mmx_rowbytes_threshold : 0L);
+ return png_ptr->io_state;
}
-#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
-#ifdef PNG_SET_USER_LIMITS_SUPPORTED
-/* these functions were added to libpng 1.2.6 */
-png_uint_32 PNGAPI
-png_get_user_width_max (png_structp png_ptr)
-{
- return (png_ptr? png_ptr->user_width_max : 0);
-}
-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_1_0_X */
+#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
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