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#include <glib/gprintf.h>
#include <gtk/gtk.h>
#include <gdk/gdk.h>
#include "uca.h"
#include "uca-cam.h"
struct ThreadData {
guchar *buffer, *pixels;
GtkWidget *image;
GdkPixbuf *pixbuf;
int width;
int height;
struct uca_camera_t *cam;
};
static gboolean delete_event(GtkWidget *widget, GdkEvent *event, gpointer data)
{
return FALSE;
}
/* Another callback */
static void destroy(GtkWidget *widget, gpointer data)
{
struct uca_t *uca = (struct uca_t *) data;
uca_destroy(uca);
gtk_main_quit ();
}
void grey_to_rgb(guchar *output, guchar *input, int width, int height)
{
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
const int off = y*width + x;
output[off*3] = input[off];
output[off*3+1] = input[off];
output[off*3+2] = input[off];
}
}
}
void *grab_thread(void *args)
{
struct ThreadData *data = (struct ThreadData *) args;
struct uca_camera_t *cam = data->cam;
while (TRUE) {
cam->grab(cam, (char *) data->buffer);
grey_to_rgb(data->pixels, data->buffer, data->width, data->height);
gdk_threads_enter();
gdk_flush();
gtk_image_clear(GTK_IMAGE(data->image));
gtk_image_set_from_pixbuf(GTK_IMAGE(data->image), data->pixbuf);
gtk_widget_queue_draw_area(data->image, 0, 0, data->width, data->height);
gdk_threads_leave();
}
}
void fill_tree_store(GtkTreeStore *tree_store, struct uca_camera_t *cam)
{
GtkTreeIter iter, child;
struct uca_property_t *property;
gchar *value_string = g_malloc(256);
guint8 value_8;
guint32 value_32;
gtk_tree_store_append(tree_store, &iter, NULL);
for (int prop_id = 0; prop_id < UCA_PROP_LAST; prop_id++) {
property = uca_get_full_property(prop_id);
switch (property->type) {
case uca_string:
cam->get_property(cam, prop_id, value_string);
break;
case uca_uint8t:
cam->get_property(cam, prop_id, &value_8);
g_sprintf(value_string, "%d", value_8);
break;
case uca_uint32t:
cam->get_property(cam, prop_id, &value_32);
g_sprintf(value_string, "%d", value_32);
break;
}
gtk_tree_store_set(tree_store, &iter,
0, property->name,
1, value_string,
-1);
gtk_tree_store_append(tree_store, &iter, NULL);
}
g_free(value_string);
}
int main(int argc, char *argv[])
{
struct uca_t *uca = uca_init();
if (uca == NULL) {
g_print("Couldn't initialize frame grabber and/or cameras\n");
return 1;
}
int width, height, bits_per_sample;
struct uca_camera_t *cam = uca->cameras;
cam->get_property(cam, UCA_PROP_WIDTH, &width);
cam->get_property(cam, UCA_PROP_HEIGHT, &height);
cam->get_property(cam, UCA_PROP_BITDEPTH, &bits_per_sample);
bits_per_sample = 8;
g_thread_init(NULL);
gdk_threads_init();
gtk_init (&argc, &argv);
GtkBuilder *builder = gtk_builder_new();
GError *error = NULL;
if (!gtk_builder_add_from_file(builder, "control.glade", &error)) {
g_print("Couldn't load UI file!\n");
g_print("Message: %s\n", error->message);
g_free(error);
}
GtkWidget *window = GTK_WIDGET(gtk_builder_get_object(builder, "window"));
GtkWidget *image = GTK_WIDGET(gtk_builder_get_object(builder, "image"));
GtkTreeStore *tree_store = GTK_TREE_STORE(gtk_builder_get_object(builder, "cameraproperties"));
fill_tree_store(tree_store, cam);
g_signal_connect (window, "delete-event",
G_CALLBACK (delete_event), NULL);
g_signal_connect (window, "destroy",
G_CALLBACK (destroy), uca);
GdkPixbuf *pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, bits_per_sample, width, height);
gtk_image_set_from_pixbuf(GTK_IMAGE(image), pixbuf);
gtk_widget_show(image);
gtk_widget_show(window);
/* start grabbing and thread */
struct ThreadData td;
uca_cam_alloc(cam, 20);
td.image = image;
td.pixbuf = pixbuf;
td.buffer = (guchar *) g_malloc(width * height);
td.pixels = gdk_pixbuf_get_pixels(pixbuf);
td.width = width;
td.height = height;
td.cam = cam;
cam->start_recording(cam);
if (!g_thread_create(grab_thread, &td, FALSE, &error)) {
g_printerr("Failed to create thread: %s\n", error->message);
uca_destroy(uca);
return 1;
}
gdk_threads_enter();
gtk_main ();
gdk_threads_leave();
return 0;
}
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