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--- src/gdevpng.c.orig 2003-05-15 19:05:29.000000000 +0900
+++ src/gdevpng.c 2015-02-19 01:59:24.000000000 +0900
@@ -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 @@
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_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_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 @@
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 @@
/* 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 @@
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 @@
{
}
#endif
+#endif
private int
pngalpha_open(gx_device * pdev)
|
