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Diffstat (limited to 'src/3rdparty/libpng/pngget.c')
-rw-r--r--src/3rdparty/libpng/pngget.c563
1 files changed, 329 insertions, 234 deletions
diff --git a/src/3rdparty/libpng/pngget.c b/src/3rdparty/libpng/pngget.c
index 43400cda7e..743a6a9bbc 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 1.5.7 [December 15, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.17 [March 26, 2015]
+ * Copyright (c) 1998-2015 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.)
*
@@ -17,7 +17,7 @@
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
png_uint_32 PNGAPI
-png_get_valid(png_const_structp png_ptr, png_const_infop info_ptr,
+png_get_valid(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_uint_32 flag)
{
if (png_ptr != NULL && info_ptr != NULL)
@@ -27,7 +27,7 @@ png_get_valid(png_const_structp png_ptr, png_const_infop info_ptr,
}
png_size_t PNGAPI
-png_get_rowbytes(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_rowbytes(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->rowbytes);
@@ -37,7 +37,7 @@ png_get_rowbytes(png_const_structp png_ptr, png_const_infop info_ptr)
#ifdef PNG_INFO_IMAGE_SUPPORTED
png_bytepp PNGAPI
-png_get_rows(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_rows(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->row_pointers);
@@ -49,7 +49,7 @@ png_get_rows(png_const_structp png_ptr, png_const_infop info_ptr)
#ifdef PNG_EASY_ACCESS_SUPPORTED
/* Easy access to info, added in libpng-0.99 */
png_uint_32 PNGAPI
-png_get_image_width(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_image_width(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->width;
@@ -58,7 +58,7 @@ png_get_image_width(png_const_structp png_ptr, png_const_infop info_ptr)
}
png_uint_32 PNGAPI
-png_get_image_height(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_image_height(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->height;
@@ -67,7 +67,7 @@ png_get_image_height(png_const_structp png_ptr, png_const_infop info_ptr)
}
png_byte PNGAPI
-png_get_bit_depth(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_bit_depth(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->bit_depth;
@@ -76,7 +76,7 @@ png_get_bit_depth(png_const_structp png_ptr, png_const_infop info_ptr)
}
png_byte PNGAPI
-png_get_color_type(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_color_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->color_type;
@@ -85,7 +85,7 @@ png_get_color_type(png_const_structp png_ptr, png_const_infop info_ptr)
}
png_byte PNGAPI
-png_get_filter_type(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_filter_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->filter_type;
@@ -94,7 +94,7 @@ png_get_filter_type(png_const_structp png_ptr, png_const_infop info_ptr)
}
png_byte PNGAPI
-png_get_interlace_type(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_interlace_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->interlace_type;
@@ -103,7 +103,7 @@ png_get_interlace_type(png_const_structp png_ptr, png_const_infop info_ptr)
}
png_byte PNGAPI
-png_get_compression_type(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_compression_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return info_ptr->compression_type;
@@ -112,10 +112,12 @@ png_get_compression_type(png_const_structp png_ptr, png_const_infop info_ptr)
}
png_uint_32 PNGAPI
-png_get_x_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_x_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp
+ info_ptr)
{
#ifdef PNG_pHYs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_pHYs) != 0)
{
png_debug1(1, "in %s retrieval function",
"png_get_x_pixels_per_meter");
@@ -123,16 +125,21 @@ png_get_x_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
return (info_ptr->x_pixels_per_unit);
}
+#else
+ PNG_UNUSED(png_ptr)
+ PNG_UNUSED(info_ptr)
#endif
return (0);
}
png_uint_32 PNGAPI
-png_get_y_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_y_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp
+ info_ptr)
{
#ifdef PNG_pHYs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_pHYs) != 0)
{
png_debug1(1, "in %s retrieval function",
"png_get_y_pixels_per_meter");
@@ -140,16 +147,20 @@ png_get_y_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
return (info_ptr->y_pixels_per_unit);
}
+#else
+ PNG_UNUSED(png_ptr)
+ PNG_UNUSED(info_ptr)
#endif
return (0);
}
png_uint_32 PNGAPI
-png_get_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
#ifdef PNG_pHYs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_pHYs) != 0)
{
png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter");
@@ -157,6 +168,9 @@ png_get_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
info_ptr->x_pixels_per_unit == info_ptr->y_pixels_per_unit)
return (info_ptr->x_pixels_per_unit);
}
+#else
+ PNG_UNUSED(png_ptr)
+ PNG_UNUSED(info_ptr)
#endif
return (0);
@@ -164,10 +178,12 @@ png_get_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
#ifdef PNG_FLOATING_POINT_SUPPORTED
float PNGAPI
-png_get_pixel_aspect_ratio(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_pixel_aspect_ratio(png_const_structrp png_ptr, png_const_inforp
+ info_ptr)
{
#ifdef PNG_READ_pHYs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_pHYs) != 0)
{
png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio");
@@ -175,6 +191,9 @@ png_get_pixel_aspect_ratio(png_const_structp png_ptr, png_const_infop info_ptr)
return ((float)((float)info_ptr->y_pixels_per_unit
/(float)info_ptr->x_pixels_per_unit));
}
+#else
+ PNG_UNUSED(png_ptr)
+ PNG_UNUSED(info_ptr)
#endif
return ((float)0.0);
@@ -183,14 +202,15 @@ png_get_pixel_aspect_ratio(png_const_structp png_ptr, png_const_infop info_ptr)
#ifdef PNG_FIXED_POINT_SUPPORTED
png_fixed_point PNGAPI
-png_get_pixel_aspect_ratio_fixed(png_const_structp png_ptr,
- png_const_infop info_ptr)
+png_get_pixel_aspect_ratio_fixed(png_const_structrp png_ptr,
+ png_const_inforp info_ptr)
{
#ifdef PNG_READ_pHYs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs)
- && info_ptr->x_pixels_per_unit > 0 && info_ptr->y_pixels_per_unit > 0
- && info_ptr->x_pixels_per_unit <= PNG_UINT_31_MAX
- && info_ptr->y_pixels_per_unit <= PNG_UINT_31_MAX)
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_pHYs) != 0 &&
+ info_ptr->x_pixels_per_unit > 0 && info_ptr->y_pixels_per_unit > 0 &&
+ info_ptr->x_pixels_per_unit <= PNG_UINT_31_MAX &&
+ info_ptr->y_pixels_per_unit <= PNG_UINT_31_MAX)
{
png_fixed_point res;
@@ -200,9 +220,12 @@ png_get_pixel_aspect_ratio_fixed(png_const_structp png_ptr,
* range of 0..2^31-1; otherwise the cast might overflow.
*/
if (png_muldiv(&res, (png_int_32)info_ptr->y_pixels_per_unit, PNG_FP_1,
- (png_int_32)info_ptr->x_pixels_per_unit))
+ (png_int_32)info_ptr->x_pixels_per_unit) != 0)
return res;
}
+#else
+ PNG_UNUSED(png_ptr)
+ PNG_UNUSED(info_ptr)
#endif
return 0;
@@ -210,64 +233,80 @@ png_get_pixel_aspect_ratio_fixed(png_const_structp png_ptr,
#endif
png_int_32 PNGAPI
-png_get_x_offset_microns(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_x_offset_microns(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
#ifdef PNG_oFFs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_oFFs) != 0)
{
png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
return (info_ptr->x_offset);
}
+#else
+ PNG_UNUSED(png_ptr)
+ PNG_UNUSED(info_ptr)
#endif
return (0);
}
png_int_32 PNGAPI
-png_get_y_offset_microns(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_y_offset_microns(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
#ifdef PNG_oFFs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_oFFs) != 0)
{
png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
return (info_ptr->y_offset);
}
+#else
+ PNG_UNUSED(png_ptr)
+ PNG_UNUSED(info_ptr)
#endif
return (0);
}
png_int_32 PNGAPI
-png_get_x_offset_pixels(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_x_offset_pixels(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
#ifdef PNG_oFFs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_oFFs) != 0)
{
png_debug1(1, "in %s retrieval function", "png_get_x_offset_pixels");
if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
return (info_ptr->x_offset);
}
+#else
+ PNG_UNUSED(png_ptr)
+ PNG_UNUSED(info_ptr)
#endif
return (0);
}
png_int_32 PNGAPI
-png_get_y_offset_pixels(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_y_offset_pixels(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
#ifdef PNG_oFFs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_oFFs) != 0)
{
png_debug1(1, "in %s retrieval function", "png_get_y_offset_pixels");
if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
return (info_ptr->y_offset);
}
+#else
+ PNG_UNUSED(png_ptr)
+ PNG_UNUSED(info_ptr)
#endif
return (0);
@@ -298,7 +337,7 @@ ppi_from_ppm(png_uint_32 ppm)
*/
png_fixed_point result;
if (ppm <= PNG_UINT_31_MAX && png_muldiv(&result, (png_int_32)ppm, 127,
- 5000))
+ 5000) != 0)
return result;
/* Overflow. */
@@ -307,26 +346,26 @@ ppi_from_ppm(png_uint_32 ppm)
}
png_uint_32 PNGAPI
-png_get_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_pixels_per_inch(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
return ppi_from_ppm(png_get_pixels_per_meter(png_ptr, info_ptr));
}
png_uint_32 PNGAPI
-png_get_x_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_x_pixels_per_inch(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
return ppi_from_ppm(png_get_x_pixels_per_meter(png_ptr, info_ptr));
}
png_uint_32 PNGAPI
-png_get_y_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_y_pixels_per_inch(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
return ppi_from_ppm(png_get_y_pixels_per_meter(png_ptr, info_ptr));
}
#ifdef PNG_FIXED_POINT_SUPPORTED
static png_fixed_point
-png_fixed_inches_from_microns(png_structp png_ptr, png_int_32 microns)
+png_fixed_inches_from_microns(png_const_structrp png_ptr, png_int_32 microns)
{
/* Convert from metres * 1,000,000 to inches * 100,000, meters to
* inches is simply *(100/2.54), so we want *(10/2.54) == 500/127.
@@ -337,8 +376,8 @@ png_fixed_inches_from_microns(png_structp png_ptr, png_int_32 microns)
}
png_fixed_point PNGAPI
-png_get_x_offset_inches_fixed(png_structp png_ptr,
- png_const_infop info_ptr)
+png_get_x_offset_inches_fixed(png_const_structrp png_ptr,
+ png_const_inforp info_ptr)
{
return png_fixed_inches_from_microns(png_ptr,
png_get_x_offset_microns(png_ptr, info_ptr));
@@ -347,8 +386,8 @@ png_get_x_offset_inches_fixed(png_structp png_ptr,
#ifdef PNG_FIXED_POINT_SUPPORTED
png_fixed_point PNGAPI
-png_get_y_offset_inches_fixed(png_structp png_ptr,
- png_const_infop info_ptr)
+png_get_y_offset_inches_fixed(png_const_structrp png_ptr,
+ png_const_inforp info_ptr)
{
return png_fixed_inches_from_microns(png_ptr,
png_get_y_offset_microns(png_ptr, info_ptr));
@@ -357,7 +396,7 @@ png_get_y_offset_inches_fixed(png_structp png_ptr,
#ifdef PNG_FLOATING_POINT_SUPPORTED
float PNGAPI
-png_get_x_offset_inches(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_x_offset_inches(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
/* To avoid the overflow do the conversion directly in floating
* point.
@@ -368,7 +407,7 @@ png_get_x_offset_inches(png_const_structp png_ptr, png_const_infop info_ptr)
#ifdef PNG_FLOATING_POINT_SUPPORTED
float PNGAPI
-png_get_y_offset_inches(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_y_offset_inches(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
/* To avoid the overflow do the conversion directly in floating
* point.
@@ -379,12 +418,13 @@ png_get_y_offset_inches(png_const_structp png_ptr, png_const_infop info_ptr)
#ifdef PNG_pHYs_SUPPORTED
png_uint_32 PNGAPI
-png_get_pHYs_dpi(png_const_structp png_ptr, png_const_infop info_ptr,
+png_get_pHYs_dpi(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
{
png_uint_32 retval = 0;
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_pHYs) != 0)
{
png_debug1(1, "in %s retrieval function", "pHYs");
@@ -415,15 +455,16 @@ png_get_pHYs_dpi(png_const_structp png_ptr, png_const_infop info_ptr,
return (retval);
}
-#endif /* PNG_pHYs_SUPPORTED */
-#endif /* PNG_INCH_CONVERSIONS_SUPPORTED */
+#endif /* pHYs */
+#endif /* INCH_CONVERSIONS */
/* png_get_channels really belongs in here, too, but it's been around longer */
-#endif /* PNG_EASY_ACCESS_SUPPORTED */
+#endif /* EASY_ACCESS */
+
png_byte PNGAPI
-png_get_channels(png_const_structp png_ptr, png_const_infop info_ptr)
+png_get_channels(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->channels);
@@ -431,22 +472,25 @@ png_get_channels(png_const_structp png_ptr, png_const_infop info_ptr)
return (0);
}
+#ifdef PNG_READ_SUPPORTED
png_const_bytep PNGAPI
-png_get_signature(png_const_structp png_ptr, png_infop info_ptr)
+png_get_signature(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
return(info_ptr->signature);
return (NULL);
}
+#endif
#ifdef PNG_bKGD_SUPPORTED
png_uint_32 PNGAPI
-png_get_bKGD(png_const_structp png_ptr, png_infop info_ptr,
+png_get_bKGD(png_const_structrp png_ptr, png_inforp info_ptr,
png_color_16p *background)
{
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD)
- && background != NULL)
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_bKGD) != 0 &&
+ background != NULL)
{
png_debug1(1, "in %s retrieval function", "bKGD");
@@ -463,87 +507,47 @@ png_get_bKGD(png_const_structp png_ptr, png_infop info_ptr,
* same time to correct the rgb grayscale coefficient defaults obtained from the
* cHRM chunk in 1.5.4
*/
-png_uint_32 PNGFAPI
-png_get_cHRM_XYZ_fixed(png_structp png_ptr, png_const_infop info_ptr,
- png_fixed_point *int_red_X, png_fixed_point *int_red_Y,
- png_fixed_point *int_red_Z, png_fixed_point *int_green_X,
- png_fixed_point *int_green_Y, png_fixed_point *int_green_Z,
- png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
- png_fixed_point *int_blue_Z)
-{
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
- {
- png_xy xy;
- png_XYZ XYZ;
-
- png_debug1(1, "in %s retrieval function", "cHRM_XYZ");
-
- xy.whitex = info_ptr->x_white;
- xy.whitey = info_ptr->y_white;
- xy.redx = info_ptr->x_red;
- xy.redy = info_ptr->y_red;
- xy.greenx = info_ptr->x_green;
- xy.greeny = info_ptr->y_green;
- xy.bluex = info_ptr->x_blue;
- xy.bluey = info_ptr->y_blue;
-
- /* The *_checked function handles error reporting, so just return 0 if
- * there is a failure here.
- */
- if (png_XYZ_from_xy_checked(png_ptr, &XYZ, xy))
- {
- if (int_red_X != NULL)
- *int_red_X = XYZ.redX;
- if (int_red_Y != NULL)
- *int_red_Y = XYZ.redY;
- if (int_red_Z != NULL)
- *int_red_Z = XYZ.redZ;
- if (int_green_X != NULL)
- *int_green_X = XYZ.greenX;
- if (int_green_Y != NULL)
- *int_green_Y = XYZ.greenY;
- if (int_green_Z != NULL)
- *int_green_Z = XYZ.greenZ;
- if (int_blue_X != NULL)
- *int_blue_X = XYZ.blueX;
- if (int_blue_Y != NULL)
- *int_blue_Y = XYZ.blueY;
- if (int_blue_Z != NULL)
- *int_blue_Z = XYZ.blueZ;
-
- return (PNG_INFO_cHRM);
- }
- }
-
- return (0);
-}
-
# ifdef PNG_FLOATING_POINT_SUPPORTED
png_uint_32 PNGAPI
-png_get_cHRM(png_const_structp png_ptr, png_const_infop info_ptr,
+png_get_cHRM(png_const_structrp png_ptr, png_const_inforp info_ptr,
double *white_x, double *white_y, double *red_x, double *red_y,
double *green_x, double *green_y, double *blue_x, double *blue_y)
{
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
+ /* Quiet API change: this code used to only return the end points if a cHRM
+ * chunk was present, but the end points can also come from iCCP or sRGB
+ * chunks, so in 1.6.0 the png_get_ APIs return the end points regardless and
+ * the png_set_ APIs merely check that set end points are mutually
+ * consistent.
+ */
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
{
png_debug1(1, "in %s retrieval function", "cHRM");
if (white_x != NULL)
- *white_x = png_float(png_ptr, info_ptr->x_white, "cHRM white X");
+ *white_x = png_float(png_ptr,
+ info_ptr->colorspace.end_points_xy.whitex, "cHRM white X");
if (white_y != NULL)
- *white_y = png_float(png_ptr, info_ptr->y_white, "cHRM white Y");
+ *white_y = png_float(png_ptr,
+ info_ptr->colorspace.end_points_xy.whitey, "cHRM white Y");
if (red_x != NULL)
- *red_x = png_float(png_ptr, info_ptr->x_red, "cHRM red X");
+ *red_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redx,
+ "cHRM red X");
if (red_y != NULL)
- *red_y = png_float(png_ptr, info_ptr->y_red, "cHRM red Y");
+ *red_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redy,
+ "cHRM red Y");
if (green_x != NULL)
- *green_x = png_float(png_ptr, info_ptr->x_green, "cHRM green X");
+ *green_x = png_float(png_ptr,
+ info_ptr->colorspace.end_points_xy.greenx, "cHRM green X");
if (green_y != NULL)
- *green_y = png_float(png_ptr, info_ptr->y_green, "cHRM green Y");
+ *green_y = png_float(png_ptr,
+ info_ptr->colorspace.end_points_xy.greeny, "cHRM green Y");
if (blue_x != NULL)
- *blue_x = png_float(png_ptr, info_ptr->x_blue, "cHRM blue X");
+ *blue_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluex,
+ "cHRM blue X");
if (blue_y != NULL)
- *blue_y = png_float(png_ptr, info_ptr->y_blue, "cHRM blue Y");
+ *blue_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluey,
+ "cHRM blue Y");
return (PNG_INFO_cHRM);
}
@@ -551,35 +555,43 @@ png_get_cHRM(png_const_structp png_ptr, png_const_infop info_ptr,
}
png_uint_32 PNGAPI
-png_get_cHRM_XYZ(png_structp png_ptr, png_const_infop info_ptr,
+png_get_cHRM_XYZ(png_const_structrp png_ptr, png_const_inforp info_ptr,
double *red_X, double *red_Y, double *red_Z, double *green_X,
double *green_Y, double *green_Z, double *blue_X, double *blue_Y,
double *blue_Z)
{
- png_XYZ XYZ;
-
- if (png_get_cHRM_XYZ_fixed(png_ptr, info_ptr,
- &XYZ.redX, &XYZ.redY, &XYZ.redZ, &XYZ.greenX, &XYZ.greenY, &XYZ.greenZ,
- &XYZ.blueX, &XYZ.blueY, &XYZ.blueZ) & PNG_INFO_cHRM)
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
{
+ png_debug1(1, "in %s retrieval function", "cHRM_XYZ(float)");
+
if (red_X != NULL)
- *red_X = png_float(png_ptr, XYZ.redX, "cHRM red X");
+ *red_X = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_X,
+ "cHRM red X");
if (red_Y != NULL)
- *red_Y = png_float(png_ptr, XYZ.redY, "cHRM red Y");
+ *red_Y = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Y,
+ "cHRM red Y");
if (red_Z != NULL)
- *red_Z = png_float(png_ptr, XYZ.redZ, "cHRM red Z");
+ *red_Z = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Z,
+ "cHRM red Z");
if (green_X != NULL)
- *green_X = png_float(png_ptr, XYZ.greenX, "cHRM green X");
+ *green_X = png_float(png_ptr,
+ info_ptr->colorspace.end_points_XYZ.green_X, "cHRM green X");
if (green_Y != NULL)
- *green_Y = png_float(png_ptr, XYZ.greenY, "cHRM green Y");
+ *green_Y = png_float(png_ptr,
+ info_ptr->colorspace.end_points_XYZ.green_Y, "cHRM green Y");
if (green_Z != NULL)
- *green_Z = png_float(png_ptr, XYZ.greenZ, "cHRM green Z");
+ *green_Z = png_float(png_ptr,
+ info_ptr->colorspace.end_points_XYZ.green_Z, "cHRM green Z");
if (blue_X != NULL)
- *blue_X = png_float(png_ptr, XYZ.blueX, "cHRM blue X");
+ *blue_X = png_float(png_ptr,
+ info_ptr->colorspace.end_points_XYZ.blue_X, "cHRM blue X");
if (blue_Y != NULL)
- *blue_Y = png_float(png_ptr, XYZ.blueY, "cHRM blue Y");
+ *blue_Y = png_float(png_ptr,
+ info_ptr->colorspace.end_points_XYZ.blue_Y, "cHRM blue Y");
if (blue_Z != NULL)
- *blue_Z = png_float(png_ptr, XYZ.blueZ, "cHRM blue Z");
+ *blue_Z = png_float(png_ptr,
+ info_ptr->colorspace.end_points_XYZ.blue_Z, "cHRM blue Z");
return (PNG_INFO_cHRM);
}
@@ -589,31 +601,69 @@ png_get_cHRM_XYZ(png_structp png_ptr, png_const_infop info_ptr,
# ifdef PNG_FIXED_POINT_SUPPORTED
png_uint_32 PNGAPI
-png_get_cHRM_fixed(png_const_structp png_ptr, png_const_infop info_ptr,
+png_get_cHRM_XYZ_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ png_fixed_point *int_red_X, png_fixed_point *int_red_Y,
+ png_fixed_point *int_red_Z, png_fixed_point *int_green_X,
+ png_fixed_point *int_green_Y, png_fixed_point *int_green_Z,
+ png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
+ png_fixed_point *int_blue_Z)
+{
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
+ {
+ png_debug1(1, "in %s retrieval function", "cHRM_XYZ");
+
+ if (int_red_X != NULL)
+ *int_red_X = info_ptr->colorspace.end_points_XYZ.red_X;
+ if (int_red_Y != NULL)
+ *int_red_Y = info_ptr->colorspace.end_points_XYZ.red_Y;
+ if (int_red_Z != NULL)
+ *int_red_Z = info_ptr->colorspace.end_points_XYZ.red_Z;
+ if (int_green_X != NULL)
+ *int_green_X = info_ptr->colorspace.end_points_XYZ.green_X;
+ if (int_green_Y != NULL)
+ *int_green_Y = info_ptr->colorspace.end_points_XYZ.green_Y;
+ if (int_green_Z != NULL)
+ *int_green_Z = info_ptr->colorspace.end_points_XYZ.green_Z;
+ if (int_blue_X != NULL)
+ *int_blue_X = info_ptr->colorspace.end_points_XYZ.blue_X;
+ if (int_blue_Y != NULL)
+ *int_blue_Y = info_ptr->colorspace.end_points_XYZ.blue_Y;
+ if (int_blue_Z != NULL)
+ *int_blue_Z = info_ptr->colorspace.end_points_XYZ.blue_Z;
+ return (PNG_INFO_cHRM);
+ }
+
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_cHRM_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x,
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))
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
{
if (white_x != NULL)
- *white_x = info_ptr->x_white;
+ *white_x = info_ptr->colorspace.end_points_xy.whitex;
if (white_y != NULL)
- *white_y = info_ptr->y_white;
+ *white_y = info_ptr->colorspace.end_points_xy.whitey;
if (red_x != NULL)
- *red_x = info_ptr->x_red;
+ *red_x = info_ptr->colorspace.end_points_xy.redx;
if (red_y != NULL)
- *red_y = info_ptr->y_red;
+ *red_y = info_ptr->colorspace.end_points_xy.redy;
if (green_x != NULL)
- *green_x = info_ptr->x_green;
+ *green_x = info_ptr->colorspace.end_points_xy.greenx;
if (green_y != NULL)
- *green_y = info_ptr->y_green;
+ *green_y = info_ptr->colorspace.end_points_xy.greeny;
if (blue_x != NULL)
- *blue_x = info_ptr->x_blue;
+ *blue_x = info_ptr->colorspace.end_points_xy.bluex;
if (blue_y != NULL)
- *blue_y = info_ptr->y_blue;
+ *blue_y = info_ptr->colorspace.end_points_xy.bluey;
return (PNG_INFO_cHRM);
}
@@ -623,49 +673,57 @@ png_get_cHRM_fixed(png_const_structp png_ptr, png_const_infop info_ptr,
#endif
#ifdef PNG_gAMA_SUPPORTED
-png_uint_32 PNGFAPI
-png_get_gAMA_fixed(png_const_structp png_ptr, png_const_infop info_ptr,
+# ifdef PNG_FIXED_POINT_SUPPORTED
+png_uint_32 PNGAPI
+png_get_gAMA_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_fixed_point *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)
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 &&
+ file_gamma != NULL)
{
- *file_gamma = info_ptr->gamma;
+ *file_gamma = info_ptr->colorspace.gamma;
return (PNG_INFO_gAMA);
}
return (0);
}
+# endif
+
# ifdef PNG_FLOATING_POINT_SUPPORTED
png_uint_32 PNGAPI
-png_get_gAMA(png_const_structp png_ptr, png_const_infop info_ptr,
+png_get_gAMA(png_const_structrp png_ptr, png_const_inforp info_ptr,
double *file_gamma)
{
- png_fixed_point igamma;
- png_uint_32 ok = png_get_gAMA_fixed(png_ptr, info_ptr, &igamma);
+ png_debug1(1, "in %s retrieval function", "gAMA(float)");
- if (ok)
- *file_gamma = png_float(png_ptr, igamma, "png_get_gAMA");
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 &&
+ file_gamma != NULL)
+ {
+ *file_gamma = png_float(png_ptr, info_ptr->colorspace.gamma,
+ "png_get_gAMA");
+ return (PNG_INFO_gAMA);
+ }
- return ok;
+ return (0);
}
-
# endif
#endif
#ifdef PNG_sRGB_SUPPORTED
png_uint_32 PNGAPI
-png_get_sRGB(png_const_structp png_ptr, png_const_infop info_ptr,
+png_get_sRGB(png_const_structrp png_ptr, png_const_inforp 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)
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_sRGB) != 0 && file_srgb_intent != NULL)
{
- *file_srgb_intent = (int)info_ptr->srgb_intent;
+ *file_srgb_intent = info_ptr->colorspace.rendering_intent;
return (PNG_INFO_sRGB);
}
@@ -675,23 +733,24 @@ png_get_sRGB(png_const_structp png_ptr, png_const_infop info_ptr,
#ifdef PNG_iCCP_SUPPORTED
png_uint_32 PNGAPI
-png_get_iCCP(png_const_structp png_ptr, png_const_infop info_ptr,
+png_get_iCCP(png_const_structrp png_ptr, png_inforp info_ptr,
png_charpp name, int *compression_type,
png_bytepp 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 && compression_type != NULL && profile != NULL &&
- proflen != NULL)
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_iCCP) != 0 &&
+ name != NULL && compression_type != NULL && profile != NULL &&
+ proflen != NULL)
{
*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.
+ *proflen = png_get_uint_32(info_ptr->iccp_profile);
+ /* This is somewhat irrelevant since the profile data returned has
+ * actually been uncompressed.
*/
- *proflen = info_ptr->iccp_proflen;
- *compression_type = info_ptr->iccp_compression;
+ *compression_type = PNG_COMPRESSION_TYPE_BASE;
return (PNG_INFO_iCCP);
}
@@ -700,14 +759,14 @@ png_get_iCCP(png_const_structp png_ptr, png_const_infop info_ptr,
#endif
#ifdef PNG_sPLT_SUPPORTED
-png_uint_32 PNGAPI
-png_get_sPLT(png_const_structp png_ptr, png_const_infop info_ptr,
+int PNGAPI
+png_get_sPLT(png_const_structrp png_ptr, png_inforp 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 info_ptr->splt_palettes_num;
}
return (0);
@@ -716,13 +775,13 @@ png_get_sPLT(png_const_structp png_ptr, png_const_infop info_ptr,
#ifdef PNG_hIST_SUPPORTED
png_uint_32 PNGAPI
-png_get_hIST(png_const_structp png_ptr, png_const_infop info_ptr,
+png_get_hIST(png_const_structrp png_ptr, png_inforp 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)
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_hIST) != 0 && hist != NULL)
{
*hist = info_ptr->hist;
return (PNG_INFO_hIST);
@@ -733,22 +792,27 @@ png_get_hIST(png_const_structp png_ptr, png_const_infop info_ptr,
#endif
png_uint_32 PNGAPI
-png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
+png_get_IHDR(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_uint_32 *width, png_uint_32 *height, int *bit_depth,
int *color_type, int *interlace_type, int *compression_type,
int *filter_type)
-
{
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)
+ if (png_ptr == NULL || info_ptr == NULL)
return (0);
- *width = info_ptr->width;
- *height = info_ptr->height;
- *bit_depth = info_ptr->bit_depth;
- *color_type = info_ptr->color_type;
+ if (width != NULL)
+ *width = info_ptr->width;
+
+ if (height != NULL)
+ *height = info_ptr->height;
+
+ if (bit_depth != NULL)
+ *bit_depth = info_ptr->bit_depth;
+
+ if (color_type != NULL)
+ *color_type = info_ptr->color_type;
if (compression_type != NULL)
*compression_type = info_ptr->compression_type;
@@ -764,7 +828,7 @@ png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
* 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,
+ 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);
@@ -773,13 +837,14 @@ png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
#ifdef PNG_oFFs_SUPPORTED
png_uint_32 PNGAPI
-png_get_oFFs(png_const_structp png_ptr, png_const_infop info_ptr,
+png_get_oFFs(png_const_structrp png_ptr, png_const_inforp 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)
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_oFFs) != 0 &&
+ offset_x != NULL && offset_y != NULL && unit_type != NULL)
{
*offset_x = info_ptr->x_offset;
*offset_y = info_ptr->y_offset;
@@ -793,14 +858,15 @@ png_get_oFFs(png_const_structp png_ptr, png_const_infop info_ptr,
#ifdef PNG_pCAL_SUPPORTED
png_uint_32 PNGAPI
-png_get_pCAL(png_const_structp png_ptr, png_const_infop info_ptr,
+png_get_pCAL(png_const_structrp png_ptr, png_inforp 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 &&
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_pCAL) != 0 &&
+ purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
nparams != NULL && units != NULL && params != NULL)
{
*purpose = info_ptr->pcal_purpose;
@@ -819,16 +885,20 @@ png_get_pCAL(png_const_structp png_ptr, png_const_infop info_ptr,
#ifdef PNG_sCAL_SUPPORTED
# ifdef PNG_FIXED_POINT_SUPPORTED
-# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
+# if defined(PNG_FLOATING_ARITHMETIC_SUPPORTED) || \
+ defined(PNG_FLOATING_POINT_SUPPORTED)
png_uint_32 PNGAPI
-png_get_sCAL_fixed(png_structp png_ptr, png_const_infop info_ptr,
+png_get_sCAL_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
int *unit, png_fixed_point *width, png_fixed_point *height)
{
if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->valid & PNG_INFO_sCAL))
+ (info_ptr->valid & PNG_INFO_sCAL) != 0)
{
*unit = info_ptr->scal_unit;
- /*TODO: make this work without FP support */
+ /*TODO: make this work without FP support; the API is currently eliminated
+ * if neither floating point APIs nor internal floating point arithmetic
+ * are enabled.
+ */
*width = png_fixed(png_ptr, atof(info_ptr->scal_s_width), "sCAL width");
*height = png_fixed(png_ptr, atof(info_ptr->scal_s_height),
"sCAL height");
@@ -841,11 +911,11 @@ png_get_sCAL_fixed(png_structp png_ptr, png_const_infop info_ptr,
# endif /* FIXED_POINT */
# ifdef PNG_FLOATING_POINT_SUPPORTED
png_uint_32 PNGAPI
-png_get_sCAL(png_const_structp png_ptr, png_const_infop info_ptr,
+png_get_sCAL(png_const_structrp png_ptr, png_const_inforp 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) != 0)
{
*unit = info_ptr->scal_unit;
*width = atof(info_ptr->scal_s_width);
@@ -857,11 +927,11 @@ png_get_sCAL(png_const_structp png_ptr, png_const_infop info_ptr,
}
# endif /* FLOATING POINT */
png_uint_32 PNGAPI
-png_get_sCAL_s(png_const_structp png_ptr, png_const_infop info_ptr,
+png_get_sCAL_s(png_const_structrp png_ptr, png_const_inforp info_ptr,
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) != 0)
{
*unit = info_ptr->scal_unit;
*width = info_ptr->scal_s_width;
@@ -875,7 +945,7 @@ png_get_sCAL_s(png_const_structp png_ptr, png_const_infop info_ptr,
#ifdef PNG_pHYs_SUPPORTED
png_uint_32 PNGAPI
-png_get_pHYs(png_const_structp png_ptr, png_const_infop info_ptr,
+png_get_pHYs(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
{
png_uint_32 retval = 0;
@@ -883,7 +953,7 @@ png_get_pHYs(png_const_structp png_ptr, png_const_infop info_ptr,
png_debug1(1, "in %s retrieval function", "pHYs");
if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->valid & PNG_INFO_pHYs))
+ (info_ptr->valid & PNG_INFO_pHYs) != 0)
{
if (res_x != NULL)
{
@@ -909,13 +979,13 @@ png_get_pHYs(png_const_structp png_ptr, png_const_infop info_ptr,
#endif /* pHYs */
png_uint_32 PNGAPI
-png_get_PLTE(png_const_structp png_ptr, png_const_infop info_ptr,
+png_get_PLTE(png_const_structrp png_ptr, png_inforp 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)
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_PLTE) != 0 && palette != NULL)
{
*palette = info_ptr->palette;
*num_palette = info_ptr->num_palette;
@@ -928,13 +998,13 @@ png_get_PLTE(png_const_structp png_ptr, png_const_infop info_ptr,
#ifdef PNG_sBIT_SUPPORTED
png_uint_32 PNGAPI
-png_get_sBIT(png_const_structp png_ptr, png_infop info_ptr,
+png_get_sBIT(png_const_structrp png_ptr, png_inforp 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)
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_sBIT) != 0 && sig_bit != NULL)
{
*sig_bit = &(info_ptr->sig_bit);
return (PNG_INFO_sBIT);
@@ -945,8 +1015,8 @@ png_get_sBIT(png_const_structp png_ptr, png_infop info_ptr,
#endif
#ifdef PNG_TEXT_SUPPORTED
-png_uint_32 PNGAPI
-png_get_text(png_const_structp png_ptr, png_const_infop info_ptr,
+int PNGAPI
+png_get_text(png_const_structrp png_ptr, png_inforp info_ptr,
png_textp *text_ptr, int *num_text)
{
if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0)
@@ -960,7 +1030,7 @@ png_get_text(png_const_structp png_ptr, png_const_infop info_ptr,
if (num_text != NULL)
*num_text = info_ptr->num_text;
- return ((png_uint_32)info_ptr->num_text);
+ return info_ptr->num_text;
}
if (num_text != NULL)
@@ -972,12 +1042,13 @@ png_get_text(png_const_structp png_ptr, png_const_infop info_ptr,
#ifdef PNG_tIME_SUPPORTED
png_uint_32 PNGAPI
-png_get_tIME(png_const_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
+png_get_tIME(png_const_structrp png_ptr, png_inforp 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)
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_tIME) != 0 && mod_time != NULL)
{
*mod_time = &(info_ptr->mod_time);
return (PNG_INFO_tIME);
@@ -989,11 +1060,12 @@ png_get_tIME(png_const_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
#ifdef PNG_tRNS_SUPPORTED
png_uint_32 PNGAPI
-png_get_tRNS(png_const_structp png_ptr, png_infop info_ptr,
+png_get_tRNS(png_const_structrp png_ptr, png_inforp info_ptr,
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))
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_tRNS) != 0)
{
png_debug1(1, "in %s retrieval function", "tRNS");
@@ -1032,9 +1104,9 @@ png_get_tRNS(png_const_structp png_ptr, png_infop info_ptr,
}
#endif
-#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
int PNGAPI
-png_get_unknown_chunks(png_const_structp png_ptr, png_const_infop info_ptr,
+png_get_unknown_chunks(png_const_structrp png_ptr, png_inforp info_ptr,
png_unknown_chunkpp unknowns)
{
if (png_ptr != NULL && info_ptr != NULL && unknowns != NULL)
@@ -1049,7 +1121,7 @@ png_get_unknown_chunks(png_const_structp png_ptr, png_const_infop info_ptr,
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
png_byte PNGAPI
-png_get_rgb_to_gray_status (png_const_structp png_ptr)
+png_get_rgb_to_gray_status (png_const_structrp png_ptr)
{
return (png_byte)(png_ptr ? png_ptr->rgb_to_gray_status : 0);
}
@@ -1057,68 +1129,91 @@ png_get_rgb_to_gray_status (png_const_structp png_ptr)
#ifdef PNG_USER_CHUNKS_SUPPORTED
png_voidp PNGAPI
-png_get_user_chunk_ptr(png_const_structp png_ptr)
+png_get_user_chunk_ptr(png_const_structrp png_ptr)
{
return (png_ptr ? png_ptr->user_chunk_ptr : NULL);
}
#endif
png_size_t PNGAPI
-png_get_compression_buffer_size(png_const_structp png_ptr)
+png_get_compression_buffer_size(png_const_structrp png_ptr)
{
- return (png_ptr ? png_ptr->zbuf_size : 0);
+ if (png_ptr == NULL)
+ return 0;
+
+#ifdef PNG_WRITE_SUPPORTED
+ if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0)
+#endif
+ {
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+ return png_ptr->IDAT_read_size;
+#else
+ return PNG_IDAT_READ_SIZE;
+#endif
+ }
+
+#ifdef PNG_WRITE_SUPPORTED
+ else
+ return png_ptr->zbuffer_size;
+#endif
}
#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_user_width_max (png_const_structp png_ptr)
+png_get_user_width_max (png_const_structrp png_ptr)
{
return (png_ptr ? png_ptr->user_width_max : 0);
}
png_uint_32 PNGAPI
-png_get_user_height_max (png_const_structp png_ptr)
+png_get_user_height_max (png_const_structrp png_ptr)
{
return (png_ptr ? png_ptr->user_height_max : 0);
}
/* This function was added to libpng 1.4.0 */
png_uint_32 PNGAPI
-png_get_chunk_cache_max (png_const_structp png_ptr)
+png_get_chunk_cache_max (png_const_structrp png_ptr)
{
return (png_ptr ? png_ptr->user_chunk_cache_max : 0);
}
/* This function was added to libpng 1.4.1 */
png_alloc_size_t PNGAPI
-png_get_chunk_malloc_max (png_const_structp png_ptr)
+png_get_chunk_malloc_max (png_const_structrp png_ptr)
{
return (png_ptr ? png_ptr->user_chunk_malloc_max : 0);
}
-#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
+#endif /* SET_USER_LIMITS */
/* These functions were added to libpng 1.4.0 */
#ifdef PNG_IO_STATE_SUPPORTED
png_uint_32 PNGAPI
-png_get_io_state (png_structp png_ptr)
+png_get_io_state (png_const_structrp png_ptr)
{
return png_ptr->io_state;
}
png_uint_32 PNGAPI
-png_get_io_chunk_type (png_const_structp png_ptr)
+png_get_io_chunk_type (png_const_structrp png_ptr)
{
return png_ptr->chunk_name;
}
+#endif /* IO_STATE */
-png_const_bytep PNGAPI
-png_get_io_chunk_name (png_structp png_ptr)
+#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
+# ifdef PNG_GET_PALETTE_MAX_SUPPORTED
+int PNGAPI
+png_get_palette_max(png_const_structp png_ptr, png_const_infop info_ptr)
{
- PNG_CSTRING_FROM_CHUNK(png_ptr->io_chunk_string, png_ptr->chunk_name);
- return png_ptr->io_chunk_string;
+ if (png_ptr != NULL && info_ptr != NULL)
+ return png_ptr->num_palette_max;
+
+ return (-1);
}
-#endif /* ?PNG_IO_STATE_SUPPORTED */
+# endif
+#endif
-#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
+#endif /* READ || WRITE */
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-07 07:25:46 +0000