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Diffstat (limited to 'print/ghostscript7-x11/files/patch-src_gdevpng.c')
-rw-r--r--print/ghostscript7-x11/files/patch-src_gdevpng.c187
1 files changed, 187 insertions, 0 deletions
diff --git a/print/ghostscript7-x11/files/patch-src_gdevpng.c b/print/ghostscript7-x11/files/patch-src_gdevpng.c
new file mode 100644
index 000000000000..21e900385c2f
--- /dev/null
+++ b/print/ghostscript7-x11/files/patch-src_gdevpng.c
@@ -0,0 +1,187 @@
+--- src/gdevpng.c.orig 2003-05-15 10:05:29 UTC
++++ src/gdevpng.c
+@@ -41,12 +41,6 @@
+ #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.
+- */
+-#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.
+@@ -258,7 +252,7 @@ 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;
+@@ -268,19 +262,12 @@ 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;
+@@ -292,51 +279,68 @@ png_print_page(gx_device_printer * pdev,
+ png_set_bKGD(png_ptr, info_ptr, &background);
+ }
+ break;
++ case 48:
++ 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_PALETTE,
++ PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
++ PNG_FILTER_TYPE_DEFAULT);
+ /* invert monocrome pixels */
+ png_set_invert_mono(png_ptr);
+ break;
+ }
+
++ /* 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));
+@@ -346,15 +350,16 @@ 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 */
++#if 0
+ info_ptr->num_text = 0;
+ info_ptr->text = NULL;
++#endif
+
+ /* Write the contents of the image. */
+ for (y = 0; y < height; y++) {
+@@ -365,8 +370,10 @@ png_print_page(gx_device_printer * pdev,
+ /* write the rest of the file */
+ png_write_end(png_ptr, info_ptr);
+
++#if 0
+ /* if you alloced the palette, free it here */
+ gs_free_object(mem, info_ptr->palette, "png palette");
++#endif
+
+ done:
+ /* free the structures */
+@@ -376,6 +383,7 @@ png_print_page(gx_device_printer * pdev,
+ return code;
+ }
+
++#if 0
+ /*
+ * Patch around a static reference to a never-used procedure.
+ * This could be avoided if we were willing to edit pngconf.h to
+@@ -393,6 +401,7 @@ png_push_fill_buffer(png_structp png_ptr
+ {
+ }
+ #endif
++#endif
+
+ private int
+ pngalpha_open(gx_device * pdev)
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-31 04:31:21 +0000