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/*
* gmotionlive
*
* Copyright Jeroen Vreeken (pe1rxq@amsat.org) 2004, 2005
*
* This program is published under the terms of the GNU General
* Public License version 2.0 or any later version.
*/
#include <gtk/gtk.h>
#include <ctype.h>
#include <string.h>
#include <malloc.h>
#include <stdio.h>
#include <time.h>
GtkWidget *window;
GtkWidget *gtkimage=NULL;
GtkWidget *eventbox;
GdkPixbufLoader *pixbufloader=NULL;
enum {
NETCAM_STATE_HEADER,
NETCAM_STATE_START,
NETCAM_STATE_DATA,
};
int netcam_state = NETCAM_STATE_HEADER;
int netcam_linesize = 0;
#define NETCAM_LINELENGTH 80
char netcam_line[NETCAM_LINELENGTH];
int netcam_datasize = 0;
int netcam_data = 0;
int netcam_boundarylen;
int netcam_offset;
char databuf[8192];
char boundary[4096];
char *boundarystart;
char *buf = databuf + 4096;
int netcam_count = 0;
int netcam_time = 0;
int netcam_timecount = 0;
char *url_desc;
char *url;
time_t start_time;
long int bytecnt = 0;
long int imgcnt = 0;
char about[] =
"Gmotionlive 1.0\n"
"\n"
"Copyright Jeroen Vreeken (pe1rxq@amsat.org), 2004, 2005\n"
"\n"
"Gmotionlive is a simple multipart/x-mixed-replace viewer\n"
"It was written for viewing the streams produced by motion.\n"
"(http://motion.sourceforge.net)\n"
"\n"
"Gmotionlive is published under the GNU General Public License\n"
"version 2.0 or any later version.\n"
"\n";
void failure(char *text)
{
GtkWidget *dialog, *label;
dialog = gtk_dialog_new_with_buttons(NULL, NULL,
GTK_DIALOG_MODAL | GTK_DIALOG_NO_SEPARATOR, GTK_STOCK_OK,
GTK_RESPONSE_ACCEPT, NULL);
label = gtk_label_new(text);
g_signal_connect_swapped(GTK_OBJECT(dialog), "response",
G_CALLBACK(gtk_main_quit), GTK_OBJECT(dialog));
gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), label);
gtk_widget_show(label);
gtk_widget_show_all(dialog);
}
void image_closed(GdkPixbufLoader *loader, gpointer user_data)
{
GdkPixbuf *newpixbuf;
if (!pixbufloader) {
g_print("image_closed: Didn't get a pixbufloader\n");
return;
}
newpixbuf = gdk_pixbuf_loader_get_pixbuf(pixbufloader);
if (!newpixbuf)
return;
gtk_image_set_from_pixbuf(GTK_IMAGE(gtkimage), newpixbuf);
gtk_widget_show(gtkimage);
gtk_window_resize(GTK_WINDOW(window), 100, 100);
gtk_widget_show_all(window);
imgcnt++;
}
size_t netcam_write(void *ptr, size_t size, size_t nmemb, void *stream)
{
int i, j;
char *data = ptr;
/* Write the entire stream to stdout for debugging (or recording): */
/*write(2, data, size * nmemb);*/
bytecnt += size * nmemb;
for (i = 0; i < size * nmemb; i++) {
if (netcam_state == NETCAM_STATE_HEADER) {
for (; i < size * nmemb; i++) {
if (data[i] == '\n' ||
netcam_linesize >= NETCAM_LINELENGTH - 2) {
if (netcam_line[0] == '-' && netcam_line[1] == '-') {
netcam_boundarylen = strlen(netcam_line);
boundarystart = buf - netcam_boundarylen;
strcpy(boundary, netcam_line);
netcam_state = NETCAM_STATE_START;
i++;
}
netcam_line[0] = 0;
netcam_linesize = 0;
if (netcam_state != NETCAM_STATE_HEADER)
break;
} else {
netcam_line[netcam_linesize++] = data[i];
netcam_line[netcam_linesize] = 0;
}
}
}
if (netcam_state == NETCAM_STATE_START) {
for (; i < size * nmemb; i++) {
if (data[i] == '\n') {
if (netcam_linesize <= 1) {
i++;
netcam_linesize = 0;
netcam_state = NETCAM_STATE_DATA;
if ( pixbufloader )
g_object_unref(pixbufloader);
pixbufloader = gdk_pixbuf_loader_new();
if (!pixbufloader) {
g_print("ohoh6\n");
netcam_state = NETCAM_STATE_START;
break;
}
g_signal_connect(G_OBJECT(pixbufloader),
"closed",
G_CALLBACK(image_closed),
NULL);
break;
}
netcam_linesize = 0;
} else {
netcam_linesize++;
}
}
}
if (netcam_state == NETCAM_STATE_DATA) {
char *start;
int checklen;
int boundoff = 0;
int back = i + 1;
if (netcam_linesize == 0) {
netcam_linesize = 1;
start = data + i;
checklen = size * nmemb - i - netcam_boundarylen;
netcam_offset = 0;
if (checklen < 0) {
netcam_offset = netcam_boundarylen * 2 + checklen;
checklen = 0;
}
i += netcam_boundarylen;
} else {
i += netcam_offset;
start = boundarystart+netcam_offset;
checklen = size * nmemb - netcam_offset;
netcam_offset = 0;
if (checklen < 0) {
i = size * nmemb;
netcam_offset = -checklen;
boundoff = netcam_boundarylen - netcam_offset;
checklen = 0;
}
}
for (j = 0; j < checklen; j++) {
if (start[j] == '-' &&
!strncmp(boundarystart+j, boundary, netcam_boundarylen)) {
j--;
netcam_state = NETCAM_STATE_START;
break;
}
}
if (j) {
if (FALSE == gdk_pixbuf_loader_write(pixbufloader, (unsigned char*) start, j, NULL)) {
netcam_linesize = 1;
i = back;
netcam_state = NETCAM_STATE_START;
}
else
i += j;
}
if (netcam_state == NETCAM_STATE_START) {
netcam_linesize = 1;
netcam_line[0] = 0;
if ( G_IS_OBJECT(pixbufloader) ) {
gdk_pixbuf_loader_close(pixbufloader, NULL);
}
}
memcpy(boundarystart + boundoff, start + checklen, netcam_boundarylen);
}
}
return size * nmemb;
}
void read_callback (GObject *handle, GAsyncResult *result, gpointer callback_data)
{
GFile *file = G_FILE(callback_data);
GError *error = NULL;
gssize bytes_read;
bytes_read = g_input_stream_read_finish(G_INPUT_STREAM(handle),
result, &error);
if (error) {
g_object_unref(handle);
g_object_unref(file);
g_error_free(error);
failure("gmotionlive can not read from the stream");
return;
}
if (bytes_read) {
netcam_write(buf, 1, bytes_read, NULL);
g_input_stream_read_async(G_INPUT_STREAM(handle), buf, 4095,
G_PRIORITY_LOW, NULL, read_callback,
file);
} else {
g_object_unref(handle);
g_object_unref(file);
}
}
void open_callback (GObject *handle, GAsyncResult *result, gpointer callback_data)
{
GFileInputStream *stream;
GError *error = NULL;
stream = g_file_read_finish(G_FILE(handle), result, &error);
if (error) {
g_object_unref(handle);
g_error_free(error);
failure("gmotionlive was unable to open the specified stream");
return;
}
g_input_stream_read_async(G_INPUT_STREAM(stream), buf, 4095,
G_PRIORITY_LOW, NULL, read_callback, handle);
}
int transfer(char *transfer_url)
{
GFile *handle;
handle = g_file_new_for_uri(transfer_url);
g_file_read_async(handle, G_PRIORITY_LOW, NULL, open_callback, NULL);
return 0;
}
gint close_application(GtkWidget *widget, GdkEvent *event, gpointer data)
{
gtk_main_quit();
return FALSE;
}
static gboolean image_click (GtkWidget *eventbox, GdkEventButton *event, gpointer data)
{
GtkWidget *dialog, *label;
char *message;
message=malloc(strlen(about)+strlen(url_desc)+strlen(url)+80);
if (!message)
return FALSE;
sprintf(message, "%sNow viewing: %s\nURL: %s\nFrames viewed: %ld (%ld KBytes)\nFPS: %.1f (%.1f KBps)\n",
about, url_desc, url, imgcnt, bytecnt / 1024,
imgcnt/((float)(time(NULL) - start_time) + 0.0001),
bytecnt/((float)(time(NULL) - start_time) * 1024 + 0.0001));
dialog = gtk_dialog_new_with_buttons(NULL, NULL,
GTK_DIALOG_MODAL | GTK_DIALOG_NO_SEPARATOR, GTK_STOCK_OK,
GTK_RESPONSE_ACCEPT, NULL);
label = gtk_label_new(message);
g_signal_connect_swapped(GTK_OBJECT(dialog), "response",
G_CALLBACK(gtk_widget_destroy), GTK_OBJECT(dialog));
gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), label);
gtk_widget_show(label);
gtk_widget_show_all(dialog);
free(message);
return FALSE;
}
int main(int argc, char **argv)
{
gtk_init (&argc, &argv);
if (argc < 2 || argv[1] == NULL) {
failure("No URL to an image stream given!");
gtk_main();
return 1;
}
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtkimage = gtk_image_new();
eventbox = gtk_event_box_new();
gtk_container_add(GTK_CONTAINER(eventbox), gtkimage);
g_signal_connect(G_OBJECT(eventbox), "button_press_event",
G_CALLBACK(image_click), gtkimage);
gtk_container_add(GTK_CONTAINER(window), eventbox);
g_signal_connect(G_OBJECT(window), "delete_event",
G_CALLBACK(close_application), NULL);
gtk_widget_show_now(window);
start_time = time(NULL);
transfer(argv[1]);
url = argv[1];
if (argc >= 2 && argv[2] != NULL)
url_desc = argv[2];
else
url_desc = argv[1];
gtk_window_set_title(GTK_WINDOW(window), url_desc);
gtk_main();
return 0;
}
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