#include <stdio.h>
#include <stdlib.h>
#include <poppler.h>
#define FAIL(msg) \
do { fprintf (stderr, "FAIL: %s\n", msg); exit (-1); } while (0)
#define PIXELS_PER_POINT 1
int main (int argc, char *argv[])
{
PopplerDocument *document;
PopplerPage *page;
double width, height;
const char *filename = argv[1];
const char *output_filename = argv[2];
const char *page_label = argv[3];
gchar *absolute, *uri;
cairo_surface_t *surface;
cairo_t *cr;
cairo_status_t status;
GError *error = NULL;
if (argc != 4)
FAIL ("usage: pdf2png input_file.pdf output_file.png page");
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)
FAIL (error->message);
document = poppler_document_new_from_file (uri, NULL, &error);
if (document == NULL)
FAIL (error->message);
page = poppler_document_get_page_by_label (document, page_label);
if (page == NULL)
FAIL ("page not found");
poppler_page_get_size (page, &width, &height);
surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
cr = cairo_create (surface);
cairo_surface_destroy (surface);
cairo_set_source_rgb (cr, 1,1,1);
cairo_paint (cr);
cairo_push_group_with_content (cr, CAIRO_CONTENT_COLOR_ALPHA);
poppler_page_render (page, cr);
g_object_unref (page);
cairo_pop_group_to_source (cr);
cairo_paint (cr);
status = cairo_surface_write_to_png (cairo_get_target (cr),
output_filename);
cairo_destroy (cr);
if (status)
FAIL (cairo_status_to_string (status));
return 0;
}