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examples: camerabin2: add some error handling for format changing

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Check that the format could be initialized and shows a modal dialog
in case it couldn't.
This commit is contained in:
Thiago Santos 2011-12-29 13:30:13 -03:00
parent 0ef2d627be
commit b778d8a27e
1 changed files with 18 additions and 5 deletions
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23
tests/examples/camerabin2/gst-camera2.c
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@ -44,6 +44,7 @@
static GstElement *camera;
static GtkBuilder *builder;
static GtkWidget *ui_main_window;
typedef struct
{
@ -60,10 +61,10 @@ create_ogg_profile (void)
gst_caps_new_simple ("application/ogg", NULL), NULL);
gst_encoding_container_profile_add_profile (container, (GstEncodingProfile *)
gst_encoding_video_profile_new (gst_caps_new_simple ("video/theora",
gst_encoding_video_profile_new (gst_caps_new_simple ("video/x-theora",
NULL), NULL, NULL, 1));
gst_encoding_container_profile_add_profile (container, (GstEncodingProfile *)
gst_encoding_audio_profile_new (gst_caps_new_simple ("audio/vorbis",
gst_encoding_audio_profile_new (gst_caps_new_simple ("audio/x-vorbis",
NULL), NULL, NULL, 1));
return (GstEncodingProfile *) container;
@ -81,7 +82,7 @@ create_webm_profile (void)
gst_encoding_video_profile_new (gst_caps_new_simple ("video/x-vp8", NULL),
NULL, NULL, 1));
gst_encoding_container_profile_add_profile (container, (GstEncodingProfile *)
gst_encoding_audio_profile_new (gst_caps_new_simple ("audio/vorbis",
gst_encoding_audio_profile_new (gst_caps_new_simple ("audio/x-vorbis",
NULL), NULL, NULL, 1));
return (GstEncodingProfile *) container;
@ -171,8 +172,21 @@ on_formatComboBox_changed (GtkWidget * widget, gpointer data)
g_return_if_fail (profile != NULL);
gst_element_set_state (camera, GST_STATE_NULL);
g_object_set (camera, "video-profile", profile, NULL);
gst_element_set_state (camera, GST_STATE_PLAYING);
gst_encoding_profile_unref (profile);
if (GST_STATE_CHANGE_FAILURE == gst_element_set_state (camera,
GST_STATE_PLAYING)) {
GtkWidget *dialog =
gtk_message_dialog_new (GTK_WINDOW (ui_main_window), GTK_DIALOG_MODAL,
GTK_MESSAGE_ERROR, GTK_BUTTONS_OK,
"Could not initialize camerabin2 with the "
"selected format. Your system might not have the required plugins installed.\n"
"Please select another format.");
gtk_dialog_run (GTK_DIALOG (dialog));
gtk_widget_destroy (dialog);
}
}
static GstBusSyncReply
@ -265,7 +279,6 @@ int
main (int argc, char *argv[])
{
int ret = 0;
GtkWidget *ui_main_window;
GError *error = NULL;
GstBus *bus;