static void
load_animation (GInputStream *input_stream,
CbMedia *media)
{
GdkPixbufAnimation *animation;
GdkPixbuf *frame;
GError *error = NULL;
cairo_surface_t *surface;
cairo_t *ct;
gboolean has_alpha;
animation = gdk_pixbuf_animation_new_from_stream (input_stream, NULL, &error);
if (error)
{
g_warning ("Couldn't load pixbuf: %s (%s)", error->message, media->url);
mark_invalid (media);
g_error_free (error);
return;
}
frame = gdk_pixbuf_animation_get_static_image (animation);
if (!gdk_pixbuf_animation_is_static_image (animation))
media->animation = animation; /* Takes ref */
else
media->animation = NULL;
has_alpha = gdk_pixbuf_get_has_alpha (frame);
surface = cairo_image_surface_create (has_alpha ? CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24,
gdk_pixbuf_get_width (frame),
gdk_pixbuf_get_height (frame));
ct = cairo_create (surface);
gdk_cairo_set_source_pixbuf (ct, frame, 0.0, 0.0);
cairo_paint (ct);
cairo_destroy (ct);
media->surface = surface;
if (media->surface == NULL)
{
g_warning ("Surface of %p is null", media);
mark_invalid (media);
goto out;
}
media->width = gdk_pixbuf_get_width (frame);
media->height = gdk_pixbuf_get_height (frame);
media->loaded = TRUE;
media->invalid = FALSE;
out:
if (media->animation == NULL)
g_object_unref (animation);
cb_media_loading_finished (media);
}
static void
cb_media_downloader_load_twitter_video (CbMediaDownloader *downloader,
CbMedia *media)
{
SoupMessage *msg = soup_message_new ("GET", media->url);
GRegex *regex;
GMatchInfo *match_info;
soup_session_send_message (downloader->soup_session, msg);
if (msg->status_code != SOUP_STATUS_OK)
{
mark_invalid (media);
g_object_unref (msg);
return;
}
regex = g_regex_new ("<img src=\"(.*?)\" class=\"animated-gif-thumbnail", 0, 0, NULL);
g_regex_match (regex, (const char *)msg->response_body->data, 0, &match_info);
if (g_match_info_get_match_count (match_info) > 0)
{
g_assert (media->type == CB_MEDIA_TYPE_ANIMATED_GIF);
media->url = g_match_info_fetch (match_info, 1);
g_regex_unref (regex);
g_match_info_free (match_info);
g_object_unref (msg);
return;
}
else
{
g_regex_unref (regex);
g_match_info_free (match_info);
regex = g_regex_new ("<source video-src=\"(.*?)\"", 0, 0, NULL);
g_regex_match (regex, (const char *)msg->response_body->data, 0, &match_info);
media->url = g_match_info_fetch (match_info, 1);
media->type = CB_MEDIA_TYPE_TWITTER_VIDEO;
}
g_regex_unref (regex);
g_match_info_free (match_info);
regex = g_regex_new ("poster=\"(.*?)\"", 0, 0, NULL);
g_regex_match (regex, (const char *)msg->response_body->data, 0, &match_info);
media->thumb_url = g_match_info_fetch (match_info, 1);
g_regex_unref (regex);
g_match_info_free (match_info);
g_object_unref (msg);
}
static void handle_syscall(pid_t child) {
if (sc_pending[child]) {
sc_pending[child] = false;
return;
}
else {
sc_pending[child] = true;
}
/* IO Syscall require special care */
if (is_syscall_io(child)) {
if (tracer_state == TRACER_DUMPING && !is_valid_io(child)) {
mark_invalid();
}
}
}
static void
cb_media_downloader_load_threaded (CbMediaDownloader *downloader,
CbMedia *media)
{
const char *url;
SoupMessage *msg;
GInputStream *input_stream;
g_return_if_fail (CB_IS_MEDIA_DOWNLOADER (downloader));
g_return_if_fail (CB_IS_MEDIA (media));
g_return_if_fail (media->url != NULL);
g_object_ref (media);
url = canonicalize_url (media->url);
/* For these, we first need to download some html and get the real
URL of the image we want to display */
if (g_str_has_prefix (url, "instagr.am") ||
g_str_has_prefix (url, "instagram.com/p/"))
{
cb_media_downloader_get_instagram_url (downloader, media);
}
else if (g_str_has_prefix (url, "ow.ly/i/") ||
g_str_has_prefix (url, "flickr.com/photos/") ||
g_str_has_prefix (url, "flic.kr/p/") ||
g_str_has_prefix (url, "flic.kr/s/") ||
g_str_has_prefix (url, "vine.co/v/"))
{
cb_media_downloader_load_real_url (downloader, media,
"<meta property=\"og:image\" content=\"(.*?)\"", 1);
}
else if (g_str_has_prefix (url, "twitpic.com/"))
{
cb_media_downloader_load_real_url (downloader, media,
"<meta name=\"twitter:image\" value=\"(.*?)\"", 1);
}
else if (g_str_has_suffix (url, "/photo/1"))
{
cb_media_downloader_load_twitter_video (downloader, media);
}
else if (g_str_has_prefix (url, "d.pr/i/"))
{
cb_media_downloader_load_real_url (downloader, media,
"<meta property=\"og:image\"\\s+content=\"(.*?)\"", 1);
}
if (media->url == NULL)
{
g_warning ("Media is invalid.");
mark_invalid (media);
return;
}
msg = soup_message_new ("GET", media->thumb_url ? media->thumb_url : media->url);
if (msg == NULL)
{
mark_invalid (media);
g_warning ("soup_message_new failed for URI '%s'",
media->thumb_url ? media->thumb_url : media->url);
return;
}
g_signal_connect (msg, "got-chunk", G_CALLBACK (update_media_progress), media);
soup_session_send_message (downloader->soup_session, msg);
if (msg->status_code != SOUP_STATUS_OK)
{
g_debug ("Request on '%s' returned status '%s'",
media->thumb_url ? media->thumb_url : media->url,
soup_status_get_phrase (msg->status_code));
mark_invalid (media);
g_object_unref (msg);
return;
}
input_stream = g_memory_input_stream_new_from_data (msg->response_body->data,
msg->response_body->length,
NULL);
load_animation (input_stream, media);
g_input_stream_close (input_stream, NULL, NULL);
g_object_unref (input_stream);
g_object_unref (msg);
}
