6bcb0919aa
libpng(3) to be able to use the new libpng, which disabled some deprecated interfaces. Modify file.c to use mkstemp instead of tmpnam. Fix an old bug -- when the new server's configuration is created from scratch, we write a file and then read it -- use O_RDWR instead of O_WRONLY. I could not reproduce Andreas' complaint regarding compface related crashes and plan to re-enable them in the Makefile. Too bad this program is no longer in development :(
130 lines
3.9 KiB
C
130 lines
3.9 KiB
C
--- src/png.c Sat Nov 21 09:55:13 1998
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+++ src/png.c Fri Jul 13 11:29:00 2001
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@@ -78,6 +78,12 @@
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+static Pixmap rep_fail(const char *e) {
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+ ArtTextAddLine(main_widgets.text, e, ascii_font->body_font,
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+ global.alert_pixel);
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+ return None;
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+}
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+
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Pixmap do_png(char *data, long len, long *wp, long *hp)
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{
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- png_struct p_str;
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- png_info p_info;
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+ png_structp png_ptr;
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+ png_infop info_ptr;
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Pixmap pixmap;
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@@ -94,9 +100,6 @@
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- if (!(vol_fp = dump_for_png(data, len))) {
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- ArtTextAddLine(main_widgets.text, "[knews: temp file error.]",
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- ascii_font->body_font, global.alert_pixel);
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- return None;
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- }
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+ if (!(vol_fp = dump_for_png(data, len)))
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+ return rep_fail("[knews: temp file error.]");
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- if (setjmp(p_str.jmpbuf))
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+ if (setjmp(png_jmpbuf(png_ptr)))
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ArtTextAddLine(main_widgets.text, "[knews: png error.]",
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@@ -110,18 +113,26 @@
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- png_read_init(&p_str);
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- png_info_init(&p_info);
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+ png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING,
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+ NULL, NULL, NULL);
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+ if (!png_ptr)
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+ return rep_fail("[knews: can't allocate PNG structure.]");
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+ info_ptr = png_create_info_struct(png_ptr);
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+ if (!info_ptr) {
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+ png_destroy_read_struct(&png_ptr,
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+ (png_infopp)NULL, (png_infopp)NULL);
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+ return rep_fail("[knews: can't PNG info structure.]");
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+ }
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- png_init_io(&p_str, vol_fp);
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- png_read_info(&p_str, &p_info);
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+ png_init_io(png_ptr, vol_fp);
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+ png_read_info(png_ptr, info_ptr);
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- vol_w = w = p_info.width;
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- vol_h = h = p_info.height;
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+ vol_w = w = info_ptr->width;
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+ vol_h = h = info_ptr->height;
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- if (p_info.bit_depth == 16)
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- png_set_strip_16(&p_str);
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- else if (p_info.bit_depth < 8)
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- png_set_packing(&p_str);
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+ if (info_ptr->bit_depth == 16)
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+ png_set_strip_16(png_ptr);
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+ else if (info_ptr->bit_depth < 8)
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+ png_set_packing(png_ptr);
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- if (p_info.valid & PNG_INFO_bKGD)
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- png_set_background(&p_str, &p_info.background,
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+ if (info_ptr->valid & PNG_INFO_bKGD)
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+ png_set_background(png_ptr, &info_ptr->background,
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PNG_BACKGROUND_GAMMA_FILE, True, 1.0);
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@@ -129,3 +140,3 @@
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static png_color_16 bg = {0, };
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- png_set_background(&p_str, &bg,
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+ png_set_background(png_ptr, &bg,
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PNG_BACKGROUND_GAMMA_SCREEN, False, 1.0);
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@@ -135,10 +146,10 @@
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- if (!(p_info.color_type & PNG_COLOR_MASK_COLOR)) { /* grey image */
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+ if (!(info_ptr->color_type & PNG_COLOR_MASK_COLOR)) { /* grey image */
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grey = True;
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- png_set_expand(&p_str);
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+ png_set_expand(png_ptr);
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} else if (!p_cmap) { /* true color visual */
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- if (p_info.color_type == PNG_COLOR_TYPE_PALETTE)
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- png_set_expand(&p_str);
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+ if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
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+ png_set_expand(png_ptr);
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per_line *= 3;
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- } else if (p_info.color_type & PNG_COLOR_MASK_PALETTE) {
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+ } else if (info_ptr->color_type & PNG_COLOR_MASK_PALETTE) {
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CMAP_ENTRY *pal;
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@@ -146,8 +157,8 @@
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- pn = p_info.num_palette;
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+ pn = info_ptr->num_palette;
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pal = (CMAP_ENTRY *)XtMalloc(pn * sizeof *pal);
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for (i = 0 ; i < pn ; i++) {
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- pal[i].r = p_info.palette[i].red;
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- pal[i].g = p_info.palette[i].green;
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- pal[i].b = p_info.palette[i].blue;
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+ pal[i].r = info_ptr->palette[i].red;
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+ pal[i].g = info_ptr->palette[i].green;
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+ pal[i].b = info_ptr->palette[i].blue;
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}
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@@ -156,3 +167,3 @@
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} else {
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- png_set_dither(&p_str, p_cmap, cmap_size,
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+ png_set_dither(png_ptr, p_cmap, cmap_size,
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cmap_size, NULL, True);
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@@ -160,4 +171,4 @@
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- pass = png_set_interlace_handling(&p_str);
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- png_start_read_image(&p_str);
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+ pass = png_set_interlace_handling(png_ptr);
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+ png_start_read_image(png_ptr);
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@@ -169,3 +180,3 @@
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for (j = 0 ; j < h ; j++) {
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- png_read_row(&p_str, NULL, row);
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+ png_read_row(png_ptr, NULL, row);
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if (!did)
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@@ -176,3 +187,3 @@
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- png_read_end(&p_str, NULL);
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+ png_read_end(png_ptr, NULL);
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}
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@@ -206,3 +217,3 @@
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- png_read_destroy(&p_str, &p_info, NULL);
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+ png_read_destroy(png_ptr, info_ptr, NULL);
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fclose((FILE *)vol_fp);
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