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#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <dirent.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "demo.h"
static struct source {
cairo_surface_t *surface;
int width, height;
} *sources;
static int num_sources;
static size_t in_pixels, out_pixels;
int preload = 1;
int prescale = 0;
static int load_source(const char *filename, struct device *device)
{
GdkPixbuf *pb;
cairo_surface_t *target, *surface, *image;
cairo_status_t status;
cairo_t *cr;
int width, height;
int ok = 0;
pb = gdk_pixbuf_new_from_file(filename, NULL);
if (pb == NULL)
return 0;
image = surface_create_from_pixbuf(device->scanout, pb);
g_object_unref(pb);
width = cairo_image_surface_get_width(image);
height = cairo_image_surface_get_height(image);
if (!preload && !prescale) {
struct source *s;
s = (struct source *)realloc(sources, (num_sources+1)*sizeof(struct source));
if (s == NULL) {
cairo_surface_destroy(image);
return 0;
}
s[num_sources].surface = image;
s[num_sources].width = width;
s[num_sources].height = height;
num_sources++;
sources = s;
in_pixels += width * height;
out_pixels += width * height;
return 1;
}
if (prescale) {
double delta;
if (height * device->width > width * device->height)
delta = device->width / (double)width;
else
delta = device->height / (double)height;
width *= delta;
height *= delta;
}
target = device->get_framebuffer(device)->surface;
surface = cairo_surface_create_similar(preload ? target : image,
CAIRO_CONTENT_COLOR,
width, height);
cr = cairo_create(surface);
cairo_scale(cr,
width / (float)cairo_image_surface_get_width(image),
height / (float)cairo_image_surface_get_height(image));
cairo_set_source_surface(cr, image, 0, 0);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_paint(cr);
status = cairo_status(cr);
cairo_destroy(cr);
if (status == CAIRO_STATUS_SUCCESS) {
struct source *s;
s = (struct source *)realloc(sources, (num_sources+1)*sizeof(struct source));
if (s) {
s[num_sources].surface =
cairo_surface_reference(surface);
s[num_sources].width = width;
s[num_sources].height = height;
num_sources++;
sources = s;
in_pixels += cairo_image_surface_get_width(image)*cairo_image_surface_get_height(image);
out_pixels += width * height;
ok = 1;
}
}
cairo_surface_destroy(image);
cairo_surface_destroy(surface);
return ok;
}
static int done;
static void signal_handler(int sig)
{
done = sig;
}
int main(int argc, char **argv)
{
struct device *device;
struct timeval start, last_tty, last_fps, now;
const char *filename = "images/4000x4000/202672-4000x4000.jpg";
int frames, n;
int frame = 0;
double factor = 1.0125;
double zoom = 0.75;
int show_fps = 1;
const char *version;
int benchmark;
device = device_open(argc, argv);
version = device_show_version(argc, argv);
benchmark = device_get_benchmark(argc,argv);
if (benchmark == 0)
benchmark = 20;
signal(SIGHUP, signal_handler);
g_type_init();
for (n = 1; n < argc; n++) {
if (strcmp (argv[n], "--image") == 0) {
filename = argv[++n];
} else if (strncmp (argv[n], "--image=", 8) == 0) {
filename = argv[n] + 8;
} else if (strcmp (argv[n], "--prescale") == 0) {
prescale = 1;
} else if (strcmp (argv[n], "--no-preload") == 0) {
preload = 0;
} else if (strcmp (argv[n], "--hide-fps") == 0) {
show_fps = 0;
}
}
if (!load_source(filename, device))
return 1;
gettimeofday(&start, 0); now = last_tty = last_fps = start;
n = frames = 0;
do {
struct framebuffer *fb = device->get_framebuffer (device);
struct source *source = &sources[n++ % num_sources];
cairo_t *cr;
double delta;
if (source->height * device->width > source->width * device->height)
delta = device->width / (double)source->width;
else
delta = device->height / (double)source->height;
delta *= zoom;
cr = cairo_create (fb->surface);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_translate(cr, device->width/2, device->height/2);
cairo_rotate(cr, (n%360)*M_PI/180);
cairo_scale(cr, delta, delta);
cairo_translate(cr, -source->width/2, -source->height/2);
cairo_set_source_surface(cr, source->surface, 0, 0);
cairo_pattern_set_extend(cairo_get_source(cr),
CAIRO_EXTEND_NONE);
cairo_pattern_set_filter(cairo_get_source(cr),
CAIRO_FILTER_BILINEAR);
cairo_identity_matrix(cr);
cairo_paint(cr);
if (++frame % 512 == 0)
factor = 1./factor;
zoom *= factor;
gettimeofday(&now, NULL);
if (benchmark < 0 && show_fps) {
if (last_fps.tv_sec)
fps_draw(cr, device->name, version,
&last_fps, &now);
last_fps = now;
}
cairo_destroy(cr);
fb->show (fb);
fb->destroy (fb);
if (0) {
frames++;
delta = now.tv_sec - last_tty.tv_sec;
delta += (now.tv_usec - last_tty.tv_usec)*1e-6;
if (delta > 5) {
printf("%.2f fps\n", frames/delta);
last_tty = now;
frames = 0;
}
}
if (benchmark > 0) {
delta = now.tv_sec - start.tv_sec;
delta += (now.tv_usec - start.tv_usec)*1e-6;
if (delta > benchmark) {
printf("spinner: %.2f fps\n",
frame / delta);
break;
}
}
} while (!done);
if (benchmark < 0) {
struct framebuffer *fb = device->get_framebuffer (device);
struct source *source = &sources[0];
cairo_t *cr;
double delta;
if (source->height * device->width > source->width * device->height)
delta = device->width / (double)source->width;
else
delta = device->height / (double)source->height;
cr = cairo_create (fb->surface);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_translate(cr, device->width/2, device->height/2);
cairo_rotate(cr, (n%360)*M_PI/180);
cairo_scale(cr, delta, delta);
cairo_translate(cr, -source->width/2, -source->height/2);
cairo_set_source_surface(cr, source->surface, 0, 0);
cairo_pattern_set_extend(cairo_get_source(cr),
CAIRO_EXTEND_NONE);
cairo_pattern_set_filter(cairo_get_source(cr),
CAIRO_FILTER_BILINEAR);
cairo_identity_matrix(cr);
cairo_paint(cr);
cairo_destroy(cr);
fps_finish(fb, device->name, version);
fb->show (fb);
fb->destroy (fb);
pause();
}
return 0;
}
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