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#include "demo.h"
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/time.h>
#include <glib-object.h>
#include <poppler.h>
static void
fps_draw (cairo_t *cr, const char *name, const struct timeval *last, const struct timeval *now)
{
#define N_FILTER 25
static double filter[25];
static int filter_pos;
cairo_text_extents_t extents;
char buf[80];
double fps;
int n, max;
fps = now->tv_sec - last->tv_sec;
fps += (now->tv_usec - last->tv_usec) / 1000000.;
max = N_FILTER;
if (filter_pos < max)
max = filter_pos;
for (n = 0; n < max; n++)
fps += filter[n];
fps /= max + 1;
filter[filter_pos++ % N_FILTER] = fps;
snprintf (buf, sizeof (buf), "%s: %.1f fps", name, 1. / fps);
cairo_set_font_size (cr, 12);
cairo_text_extents (cr, buf, &extents);
cairo_move_to (cr, 4 - extents.x_bearing, 4 - extents.y_bearing);
cairo_set_source_rgb (cr, .05, .05, .05);
cairo_show_text (cr, buf);
}
int
main (int argc, char **argv)
{
struct device *device;
struct timeval last, now;
const char *filename = NULL;
PopplerDocument *document;
gchar *absolute, *uri;
GError *error = NULL;
int n, num_pages;
device = device_open(argc, argv);
for (n = 1; n < argc; n++) {
if (strcmp (argv[n], "--filename") == 0) {
filename = argv[n+1];
n++;
}
}
if (filename == NULL) {
fprintf (stderr, "Please use --filename <filename> to specify the PDF file to render\n");
return 1;
}
g_type_init ();
if (g_path_is_absolute (filename)) {
absolute = g_strdup (filename);
} else {
gchar *dir = g_get_current_dir ();
absolute = g_build_filename (dir, filename, (gchar *) 0);
g_free (dir);
}
uri = g_filename_to_uri (absolute, NULL, &error);
g_free (absolute);
if (uri == NULL)
return 1;
document = poppler_document_new_from_file (uri, NULL, &error);
g_free (uri);
if (document == NULL)
return 1;
num_pages = poppler_document_get_n_pages (document);
n = 0;
gettimeofday (&last, NULL);
while (1) {
cairo_t *cr;
struct framebuffer *fb;
PopplerPage *page;
double page_width, page_height;
double sf_x, sf_y, sf;
fb = device->get_framebuffer (device);
page = poppler_document_get_page (document, n++ % num_pages);
cr = cairo_create (fb->surface);
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
poppler_page_get_size (page, &page_width, &page_height);
sf_x = device->width / page_width;
sf_y = device->height / page_height;
sf = MIN (sf_x, sf_y);
cairo_scale (cr, sf, sf);
poppler_page_render (page, cr);
g_object_unref (page);
gettimeofday (&now, NULL);
fps_draw (cr, device->name, &last, &now);
last = now;
cairo_destroy (cr);
fb->show (fb);
fb->destroy (fb);
}
return 0;
}
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