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nixpkgs/pkgs/misc/ghostscript/libpng-1.5.patch
Yury G. Kudryashov d0654efc84 ghostscript: build with libpng-1.5 
svn path=/nixpkgs/branches/libpng15/; revision=29599
2011-10-03 15:30:10 +00:00

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$NetBSD: patch-ak,v 1.5 2011/01/15 14:08:10 wiz Exp $
Fix build with png-1.5. From John Bowler.
See also http://bugs.ghostscript.com/show_bug.cgi?id=692060
--- a/base/gdevpng.c.orig 2008-07-17 02:34:01.000000000 +0000
+++ b/base/gdevpng.c
@@ -36,12 +36,14 @@
#include "gdevpccm.h"
#include "gscdefs.h"
-#define PNG_INTERNAL
/*
* libpng versions 1.0.3 and later allow disabling access to the stdxxx
* files while retaining support for FILE * I/O.
+ *
+ * This is a misunderstanding - this is a build time option for libpng,
+ * it has no effect on a user of libpng.
*/
-#define PNG_NO_CONSOLE_IO
+/*#define PNG_NO_CONSOLE_IO*/
/*
* Earlier libpng versions require disabling FILE * I/O altogether.
* This produces a compiler warning about no prototype for png_init_io.
@@ -280,7 +282,7 @@ png_print_page(gx_device_printer * pdev,
goto done;
}
/* set error handling */
- if (setjmp(png_ptr->jmpbuf)) {
+ if (setjmp(png_jmpbuf(png_ptr))) {
/* If we get here, we had a problem reading the file */
code = gs_note_error(gs_error_VMerror);
goto done;
@@ -290,19 +292,12 @@ png_print_page(gx_device_printer * pdev,
png_init_io(png_ptr, file);
/* set the file information here */
- info_ptr->width = pdev->width;
- info_ptr->height = pdev->height;
- /* resolution is in pixels per meter vs. dpi */
- info_ptr->x_pixels_per_unit =
- (png_uint_32) (pdev->HWResolution[0] * (100.0 / 2.54));
- info_ptr->y_pixels_per_unit =
- (png_uint_32) (pdev->HWResolution[1] * (100.0 / 2.54));
- info_ptr->phys_unit_type = PNG_RESOLUTION_METER;
- info_ptr->valid |= PNG_INFO_pHYs;
switch (depth) {
case 32:
- info_ptr->bit_depth = 8;
- info_ptr->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
+ png_set_IHDR(png_ptr, info_ptr, pdev->width, pdev->height,
+ 8, PNG_COLOR_TYPE_RGB_ALPHA,
+ PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
+ PNG_FILTER_TYPE_DEFAULT);
png_set_invert_alpha(png_ptr);
{ gx_device_pngalpha *ppdev = (gx_device_pngalpha *)pdev;
png_color_16 background;
@@ -315,57 +310,69 @@ png_print_page(gx_device_printer * pdev,
}
break;
case 48:
- info_ptr->bit_depth = 16;
- info_ptr->color_type = PNG_COLOR_TYPE_RGB;
+ png_set_IHDR(png_ptr, info_ptr, pdev->width, pdev->height,
+ 16, PNG_COLOR_TYPE_RGB,
+ PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
+ PNG_FILTER_TYPE_DEFAULT);
#if defined(ARCH_IS_BIG_ENDIAN) && (!ARCH_IS_BIG_ENDIAN)
png_set_swap(png_ptr);
#endif
break;
case 24:
- info_ptr->bit_depth = 8;
- info_ptr->color_type = PNG_COLOR_TYPE_RGB;
+ png_set_IHDR(png_ptr, info_ptr, pdev->width, pdev->height,
+ 8, PNG_COLOR_TYPE_RGB,
+ PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
+ PNG_FILTER_TYPE_DEFAULT);
break;
case 8:
- info_ptr->bit_depth = 8;
- if (gx_device_has_color(pdev))
- info_ptr->color_type = PNG_COLOR_TYPE_PALETTE;
- else
- info_ptr->color_type = PNG_COLOR_TYPE_GRAY;
+ png_set_IHDR(png_ptr, info_ptr, pdev->width, pdev->height,
+ 8, gx_device_has_color(pdev) ?
+ PNG_COLOR_TYPE_PALETTE : PNG_COLOR_TYPE_GRAY,
+ PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
+ PNG_FILTER_TYPE_DEFAULT);
break;
case 4:
- info_ptr->bit_depth = 4;
- info_ptr->color_type = PNG_COLOR_TYPE_PALETTE;
+ png_set_IHDR(png_ptr, info_ptr, pdev->width, pdev->height,
+ 4, PNG_COLOR_TYPE_PALETTE,
+ PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
+ PNG_FILTER_TYPE_DEFAULT);
break;
case 1:
- info_ptr->bit_depth = 1;
- info_ptr->color_type = PNG_COLOR_TYPE_GRAY;
+ png_set_IHDR(png_ptr, info_ptr, pdev->width, pdev->height,
+ 1, PNG_COLOR_TYPE_GRAY,
+ PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
+ PNG_FILTER_TYPE_DEFAULT);
/* invert monocrome pixels */
png_set_invert_mono(png_ptr);
break;
+ default:
+ png_error(png_ptr, "invalid bit depth");
}
+ /* resolution is in pixels per meter vs. dpi */
+ png_set_pHYs(png_ptr, info_ptr,
+ (png_uint_32) (pdev->HWResolution[0] * (100.0 / 2.54)),
+ (png_uint_32) (pdev->HWResolution[1] * (100.0 / 2.54)),
+ PNG_RESOLUTION_METER);
+
/* set the palette if there is one */
- if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) {
+ if (png_get_color_type(png_ptr, info_ptr) == PNG_COLOR_TYPE_PALETTE) {
int i;
int num_colors = 1 << depth;
gx_color_value rgb[3];
+ png_color palette[256];
+
+ if (num_colors > 256)
+ num_colors = 256;
- info_ptr->palette =
- (void *)gs_alloc_bytes(mem, 256 * sizeof(png_color),
- "png palette");
- if (info_ptr->palette == 0) {
- code = gs_note_error(gs_error_VMerror);
- goto done;
- }
- info_ptr->num_palette = num_colors;
- info_ptr->valid |= PNG_INFO_PLTE;
for (i = 0; i < num_colors; i++) {
(*dev_proc(pdev, map_color_rgb)) ((gx_device *) pdev,
(gx_color_index) i, rgb);
- info_ptr->palette[i].red = gx_color_value_to_byte(rgb[0]);
- info_ptr->palette[i].green = gx_color_value_to_byte(rgb[1]);
- info_ptr->palette[i].blue = gx_color_value_to_byte(rgb[2]);
+ palette[i].red = gx_color_value_to_byte(rgb[0]);
+ palette[i].green = gx_color_value_to_byte(rgb[1]);
+ palette[i].blue = gx_color_value_to_byte(rgb[2]);
}
+ png_set_PLTE(png_ptr, info_ptr, palette, num_colors);
}
/* add comment */
strncpy(software_key, "Software", sizeof(software_key));
@@ -375,15 +382,14 @@ png_print_page(gx_device_printer * pdev,
text_png.key = software_key;
text_png.text = software_text;
text_png.text_length = strlen(software_text);
- info_ptr->text = &text_png;
- info_ptr->num_text = 1;
+ png_set_text(png_ptr, info_ptr, &text_png, 1);
/* write the file information */
png_write_info(png_ptr, info_ptr);
/* don't write the comments twice */
- info_ptr->num_text = 0;
- info_ptr->text = NULL;
+ /*info_ptr->num_text = 0;*/
+ /*info_ptr->text = NULL;*/
/* Write the contents of the image. */
for (y = 0; y < height; y++) {
@@ -395,7 +401,7 @@ png_print_page(gx_device_printer * pdev,
png_write_end(png_ptr, info_ptr);
/* if you alloced the palette, free it here */
- gs_free_object(mem, info_ptr->palette, "png palette");
+ /*gs_free_object(mem, info_ptr->palette, "png palette");*/
done:
/* free the structures */
@@ -405,6 +411,7 @@ png_print_page(gx_device_printer * pdev,
return code;
}
+#if 0 /* not required in 1.5 */
/*
* Patch around a static reference to a never-used procedure.
* This could be avoided if we were willing to edit pngconf.h to
@@ -422,6 +429,7 @@ png_push_fill_buffer(png_structp png_ptr
{
}
#endif
+#endif
static int
pngalpha_open(gx_device * pdev)
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