/* pngget.c - retrieval of values from info struct
*
- * Last changed in libpng 1.6.11 [June 5, 2014]
- * Copyright (c) 1998-2014 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.)
+ * Copyright (c) 2018 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * 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
return(0);
}
-png_size_t PNGAPI
+size_t PNGAPI
png_get_rowbytes(png_const_structrp png_ptr, png_const_inforp info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
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");
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");
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");
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");
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;
* 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_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");
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");
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");
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");
*/
png_fixed_point result;
if (ppm <= PNG_UINT_31_MAX && png_muldiv(&result, (png_int_32)ppm, 127,
- 5000))
- return result;
+ 5000) != 0)
+ return (png_uint_32)result;
/* Overflow. */
return 0;
static png_fixed_point
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
+ /* Convert from meters * 1,000,000 to inches * 100,000, meters to
* inches is simply *(100/2.54), so we want *(10/2.54) == 500/127.
* Notice that this can overflow - a warning is output and 0 is
* returned.
{
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");
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
#ifdef PNG_bKGD_SUPPORTED
png_uint_32 PNGAPI
png_get_bKGD(png_const_structrp png_ptr, png_inforp info_ptr,
- png_color_16p *background)
+ 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");
* consistent.
*/
if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS))
+ (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->colorspace.end_points_xy.whitex, "cHRM white X");
+ info_ptr->colorspace.end_points_xy.whitex, "cHRM white X");
if (white_y != NULL)
*white_y = png_float(png_ptr,
- info_ptr->colorspace.end_points_xy.whitey, "cHRM white Y");
+ info_ptr->colorspace.end_points_xy.whitey, "cHRM white Y");
if (red_x != NULL)
*red_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redx,
- "cHRM red X");
+ "cHRM red X");
if (red_y != NULL)
*red_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redy,
- "cHRM red Y");
+ "cHRM red Y");
if (green_x != NULL)
*green_x = png_float(png_ptr,
- info_ptr->colorspace.end_points_xy.greenx, "cHRM green X");
+ info_ptr->colorspace.end_points_xy.greenx, "cHRM green X");
if (green_y != NULL)
*green_y = png_float(png_ptr,
- info_ptr->colorspace.end_points_xy.greeny, "cHRM green Y");
+ info_ptr->colorspace.end_points_xy.greeny, "cHRM green Y");
if (blue_x != NULL)
*blue_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluex,
- "cHRM blue X");
+ "cHRM blue X");
if (blue_y != NULL)
*blue_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluey,
- "cHRM blue Y");
+ "cHRM blue Y");
return (PNG_INFO_cHRM);
}
png_uint_32 PNGAPI
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)
+ 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)
{
if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS))
+ (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, info_ptr->colorspace.end_points_XYZ.red_X,
- "cHRM red X");
+ "cHRM red X");
if (red_Y != NULL)
*red_Y = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Y,
- "cHRM red Y");
+ "cHRM red Y");
if (red_Z != NULL)
*red_Z = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Z,
- "cHRM red Z");
+ "cHRM red Z");
if (green_X != NULL)
*green_X = png_float(png_ptr,
- info_ptr->colorspace.end_points_XYZ.green_X, "cHRM green X");
+ info_ptr->colorspace.end_points_XYZ.green_X, "cHRM green X");
if (green_Y != NULL)
*green_Y = png_float(png_ptr,
- info_ptr->colorspace.end_points_XYZ.green_Y, "cHRM green Y");
+ info_ptr->colorspace.end_points_XYZ.green_Y, "cHRM green Y");
if (green_Z != NULL)
*green_Z = png_float(png_ptr,
- info_ptr->colorspace.end_points_XYZ.green_Z, "cHRM green Z");
+ info_ptr->colorspace.end_points_XYZ.green_Z, "cHRM green Z");
if (blue_X != NULL)
*blue_X = png_float(png_ptr,
- info_ptr->colorspace.end_points_XYZ.blue_X, "cHRM blue X");
+ info_ptr->colorspace.end_points_XYZ.blue_X, "cHRM blue X");
if (blue_Y != NULL)
*blue_Y = png_float(png_ptr,
- info_ptr->colorspace.end_points_XYZ.blue_Y, "cHRM blue Y");
+ info_ptr->colorspace.end_points_XYZ.blue_Y, "cHRM blue Y");
if (blue_Z != NULL)
*blue_Z = png_float(png_ptr,
- info_ptr->colorspace.end_points_XYZ.blue_Z, "cHRM blue Z");
+ info_ptr->colorspace.end_points_XYZ.blue_Z, "cHRM blue Z");
return (PNG_INFO_cHRM);
}
png_fixed_point *int_blue_Z)
{
if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS))
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
{
png_debug1(1, "in %s retrieval function", "cHRM_XYZ");
png_debug1(1, "in %s retrieval function", "cHRM");
if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS))
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
{
if (white_x != NULL)
*white_x = info_ptr->colorspace.end_points_xy.whitex;
png_debug1(1, "in %s retrieval function", "gAMA");
if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) &&
- file_gamma != NULL)
+ (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 &&
+ file_gamma != NULL)
{
*file_gamma = info_ptr->colorspace.gamma;
return (PNG_INFO_gAMA);
png_debug1(1, "in %s retrieval function", "gAMA(float)");
if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) &&
+ (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");
+ "png_get_gAMA");
return (PNG_INFO_gAMA);
}
{
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 = info_ptr->colorspace.rendering_intent;
return (PNG_INFO_sRGB);
{
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 && profile != NULL && proflen != NULL)
{
*name = info_ptr->iccp_name;
*profile = info_ptr->iccp_profile;
/* This is somewhat irrelevant since the profile data returned has
* actually been uncompressed.
*/
- *compression_type = PNG_COMPRESSION_TYPE_BASE;
+ if (compression_type != NULL)
+ *compression_type = PNG_COMPRESSION_TYPE_BASE;
return (PNG_INFO_iCCP);
}
return (0);
+
}
#endif
}
#endif
+#ifdef PNG_eXIf_SUPPORTED
+png_uint_32 PNGAPI
+png_get_eXIf(png_const_structrp png_ptr, png_inforp info_ptr,
+ png_bytep *exif)
+{
+ png_warning(png_ptr, "png_get_eXIf does not work; use png_get_eXIf_1");
+ PNG_UNUSED(info_ptr)
+ PNG_UNUSED(exif)
+ return 0;
+}
+
+png_uint_32 PNGAPI
+png_get_eXIf_1(png_const_structrp png_ptr, png_const_inforp info_ptr,
+ png_uint_32 *num_exif, png_bytep *exif)
+{
+ png_debug1(1, "in %s retrieval function", "eXIf");
+
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_eXIf) != 0 && exif != NULL)
+ {
+ *num_exif = info_ptr->num_exif;
+ *exif = info_ptr->exif;
+ return (PNG_INFO_eXIf);
+ }
+
+ return (0);
+}
+#endif
+
#ifdef PNG_hIST_SUPPORTED
png_uint_32 PNGAPI
png_get_hIST(png_const_structrp png_ptr, png_inforp info_ptr,
{
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);
{
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;
{
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;
{
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;
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; the API is currently eliminated
*/
*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");
+ "sCAL height");
return (PNG_INFO_sCAL);
}
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);
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;
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)
{
{
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;
{
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);
{
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);
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");
}
#endif
-png_size_t PNGAPI
+size_t PNGAPI
png_get_compression_buffer_size(png_const_structrp png_ptr)
{
if (png_ptr == NULL)
return 0;
-# ifdef PNG_WRITE_SUPPORTED
- if (png_ptr->mode & PNG_IS_READ_STRUCT)
-# endif
+#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_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_WRITE_SUPPORTED
+ else
+ return png_ptr->zbuffer_size;
+#endif
}
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
{
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
{
return png_ptr->chunk_name;
}
-#endif /* ?PNG_IO_STATE_SUPPORTED */
+#endif /* IO_STATE */
#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
# ifdef PNG_GET_PALETTE_MAX_SUPPORTED
# endif
#endif
-#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
+#ifdef PNG_APNG_SUPPORTED
+png_uint_32 PNGAPI
+png_get_acTL(png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 *num_frames, png_uint_32 *num_plays)
+{
+ png_debug1(1, "in %s retrieval function", "acTL");
+
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_acTL) &&
+ num_frames != NULL && num_plays != NULL)
+ {
+ *num_frames = info_ptr->num_frames;
+ *num_plays = info_ptr->num_plays;
+ return (1);
+ }
+
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_num_frames(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_get_num_frames()");
+
+ if (png_ptr != NULL && info_ptr != NULL)
+ return (info_ptr->num_frames);
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_num_plays(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_get_num_plays()");
+
+ if (png_ptr != NULL && info_ptr != NULL)
+ return (info_ptr->num_plays);
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_next_frame_fcTL(png_structp png_ptr, png_infop info_ptr,
+ png_uint_32 *width, png_uint_32 *height,
+ png_uint_32 *x_offset, png_uint_32 *y_offset,
+ png_uint_16 *delay_num, png_uint_16 *delay_den,
+ png_byte *dispose_op, png_byte *blend_op)
+{
+ png_debug1(1, "in %s retrieval function", "fcTL");
+
+ if (png_ptr != NULL && info_ptr != NULL &&
+ (info_ptr->valid & PNG_INFO_fcTL) &&
+ width != NULL && height != NULL &&
+ x_offset != NULL && y_offset != NULL &&
+ delay_num != NULL && delay_den != NULL &&
+ dispose_op != NULL && blend_op != NULL)
+ {
+ *width = info_ptr->next_frame_width;
+ *height = info_ptr->next_frame_height;
+ *x_offset = info_ptr->next_frame_x_offset;
+ *y_offset = info_ptr->next_frame_y_offset;
+ *delay_num = info_ptr->next_frame_delay_num;
+ *delay_den = info_ptr->next_frame_delay_den;
+ *dispose_op = info_ptr->next_frame_dispose_op;
+ *blend_op = info_ptr->next_frame_blend_op;
+ return (1);
+ }
+
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_next_frame_width(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_get_next_frame_width()");
+
+ if (png_ptr != NULL && info_ptr != NULL)
+ return (info_ptr->next_frame_width);
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_next_frame_height(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_get_next_frame_height()");
+
+ if (png_ptr != NULL && info_ptr != NULL)
+ return (info_ptr->next_frame_height);
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_next_frame_x_offset(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_get_next_frame_x_offset()");
+
+ if (png_ptr != NULL && info_ptr != NULL)
+ return (info_ptr->next_frame_x_offset);
+ return (0);
+}
+
+png_uint_32 PNGAPI
+png_get_next_frame_y_offset(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_get_next_frame_y_offset()");
+
+ if (png_ptr != NULL && info_ptr != NULL)
+ return (info_ptr->next_frame_y_offset);
+ return (0);
+}
+
+png_uint_16 PNGAPI
+png_get_next_frame_delay_num(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_get_next_frame_delay_num()");
+
+ if (png_ptr != NULL && info_ptr != NULL)
+ return (info_ptr->next_frame_delay_num);
+ return (0);
+}
+
+png_uint_16 PNGAPI
+png_get_next_frame_delay_den(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_get_next_frame_delay_den()");
+
+ if (png_ptr != NULL && info_ptr != NULL)
+ return (info_ptr->next_frame_delay_den);
+ return (0);
+}
+
+png_byte PNGAPI
+png_get_next_frame_dispose_op(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_get_next_frame_dispose_op()");
+
+ if (png_ptr != NULL && info_ptr != NULL)
+ return (info_ptr->next_frame_dispose_op);
+ return (0);
+}
+
+png_byte PNGAPI
+png_get_next_frame_blend_op(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_get_next_frame_blend_op()");
+
+ if (png_ptr != NULL && info_ptr != NULL)
+ return (info_ptr->next_frame_blend_op);
+ return (0);
+}
+
+png_byte PNGAPI
+png_get_first_frame_is_hidden(png_structp png_ptr, png_infop info_ptr)
+{
+ png_debug(1, "in png_first_frame_is_hidden()");
+
+ if (png_ptr != NULL)
+ return (png_byte)(png_ptr->apng_flags & PNG_FIRST_FRAME_HIDDEN);
+
+ PNG_UNUSED(info_ptr)
+
+ return 0;
+}
+#endif /* PNG_APNG_SUPPORTED */
+#endif /* READ || WRITE */
projects / platform / upstream / libpng.git / blobdiff