Initial revision

1 files changed, 88 insertions, 0 deletions

diff --git a/upsample-nearest.c b/upsample-nearest.c
new file mode 100644
index 0000000..0fb8220
--- /dev/null
+++ b/upsample-nearest.c
@@ -0,0 +1,88 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <sys/time.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <cairo.h>
+#include "tools.h"
+#include "setup.h"
+
+static int width = 384;
+static int height = 384;
+
+#define rdtscll(val) __asm__ __volatile__("rdtsc" : "=A" (val))
+
+static int test (cairo_surface_t *surface, const char *png_filename)
+{
+    cairo_surface_t *image = cairo_image_surface_create_from_png (png_filename);
+    cairo_pattern_t *pattern;
+    uint64_t before = 0;
+    uint64_t after = 0;
+    cairo_t *cr;
+
+    cr = cairo_create (surface);
+
+    cairo_set_source_rgba (cr, 0, 0, 0, 0);
+    cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+    cairo_rectangle (cr, 0, 0, width, height);
+    cairo_fill (cr);
+
+    cairo_scale (cr, 8.0, 8.0);
+
+    pattern = cairo_pattern_create_for_surface (image);
+    cairo_pattern_set_extend (pattern, CAIRO_EXTEND_NONE);
+    cairo_pattern_set_filter (pattern, CAIRO_FILTER_NEAREST);
+    cairo_set_source (cr, pattern);
+
+    rdtscll (before);
+    cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
+    cairo_paint (cr);
+    rdtscll (after);
+
+    cairo_destroy (cr);
+    cairo_pattern_destroy (pattern);
+
+    return (int) (after - before);
+}
+
+static const char *filenames[] = {
+    "48x48-brokenlock",
+    "48x48-mail",
+    "48x48-script",
+    "48x48-todo"
+};
+
+int main( int argc, char **argv )
+{
+    cairo_surface_t *surface;
+    int i;
+
+    surface = output_create_surface (argv [0], width, height);
+
+    for (i = 0; i < sizeof (filenames) / sizeof (const char *); i++) {
+        char input_filename [1024];
+        char output_filename [1024];
+        int j;
+
+        fprintf (stderr, "Testing %s...\n", filenames [i]);
+        sprintf (input_filename, "%s.png", filenames [i]);
+        sprintf (output_filename, "%s-upsample-nearest-out.png",
+                 filenames [i]);
+
+        test (surface, input_filename);
+        cairo_surface_write_to_png (surface, output_filename);
+
+        for (j = 0; j < NUM_RUNS; j++) {
+            int cur = test (surface, input_filename);
+            fprintf (stderr, "\t%d: %d (%.2fms)\n", j, cur,
+                     get_milliseconds (cur));
+        }
+    }
+
+    cairo_surface_destroy (surface);
+    output_cleanup ();
+    return 0;
+}
+