Attachment 45684 Details for Bug 36279 – source of program that demonstraits brokenness

source of program that demonstraits brokenness

bug.c (text/x-csrc), 1.53 KB, created by Thomas Jones on 2011-04-15 14:21:02 UTC

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Creator: Thomas Jones

Created: 2011-04-15 14:21:02 UTC

Size: 1.53 KB

patch

obsolete

>#include <unistd.h>
>#include <stdint.h>
>#include <stdio.h>
>#include <string.h>
>#include <cairo.h>
>
>
>#include "data.h"
>
>cairo_surface_t *create_surf(int width, int height, int depth, uint8_t *data)
>{
>	cairo_format_t format;
>	switch (depth) {
>		case 8:		format = CAIRO_FORMAT_A8;
>					break;
>		case 24:	format = CAIRO_FORMAT_RGB24;
>					depth = 32; // TODO: remove this
>					break;
>		case 32:	format = CAIRO_FORMAT_ARGB32;
>					break;
>		default: 	printf("invalid depth %d\n", depth);
>					break;
>	}
>	
>	cairo_surface_t *surface = cairo_image_surface_create(format, width, height);
>	
>	uint8_t *pixels = cairo_image_surface_get_data(surface);
>	int stride = cairo_image_surface_get_stride(surface);
>	for (int i = 0; i < height; i++)
>		memcpy(pixels + i * stride, data + i * width * depth / 8, depth / 8 * width);
>
>	return surface;
>}
>
>
>void do_paint(cairo_t *cr, cairo_surface_t *surf)
>{
>	cairo_set_source_surface(cr, surf, 0, 0);
>//	cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST);
>	cairo_paint(cr);
>}
>
>
>int main() {
>
>	cairo_surface_t *surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, img_width, img_height);
>	cairo_t *cr = cairo_create(surface);
>	
>	cairo_surface_t *surf1, *surf2;
>
>	surf1 = create_surf(img_width,img_height, 24, data1);
>	surf2 = create_surf(img_width,img_height, 32, data2);
>	
>	do_paint(cr, surf1);
>	do_paint(cr, surf2);
>
>	
>	cairo_surface_write_to_png(surf1, "surf1.png");
>	cairo_surface_write_to_png(surf2, "surf2.png");
>	cairo_surface_write_to_png(surface, "test.png");
>	cairo_destroy(cr);
>	cairo_surface_destroy(surface);
>}

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Attachments on bug 36279: 45684 | 45685

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