Invalid property's type for a controller at runtime: `G_VALUE_TYPE (value) == self->priv->type' failed
Rossana Guerra
guerra.rossana at gmail.com
Wed Oct 26 13:16:53 PDT 2011
Where it says guint duration = 500.0 it should say guint duration = 500.
Nonetheless, the error persists.
2011/10/26 Rossana Guerra <guerra.rossana at gmail.com>
> HI Stefan, thanks for your help, I changed the variable type from gdouble
> to guint, same error.
>
> Here's the whole code example:
>
>
> #include <gst.h>
> #include <controller/gstcontroller.h>
> #include <iostream>
>
>
> using namespace std;
>
> // Error handler
> static gboolean bus_call (GstBus *bus, GstMessage *msg, gpointer data)
> {
> GMainLoop *loop = (GMainLoop *) data;
>
> switch (GST_MESSAGE_TYPE (msg))
> {
> case GST_MESSAGE_EOS:
> g_print ("Final de stream\n");
> g_main_loop_quit (loop);
> break;
> case GST_MESSAGE_ERROR:
> {
> gchar *debug;
> GError *error;
> gst_message_parse_error (msg, &error, &debug);
> g_free (debug);
> g_printerr ("Error: %s\n", error->message);
> g_error_free (error);
> g_main_loop_quit (loop);
> break;
> }
> default:
> break;
> }
> return TRUE;
> }
>
> static void on_pad_added (GstElement *element, GstPad *pad, gpointer data)
> {
> GstPad *sinkpad = NULL;
> GstElement * elemento = (GstElement *) data;
>
>
> /* Ahora linkeo el pad de comp con sink pad */
> g_print ("Dynamic pad created, linking queue\n");
> sinkpad = gst_element_get_static_pad (elemento, "sink");
>
>
> gst_pad_link (pad, sinkpad);
> gst_object_unref(sinkpad);
>
> }
>
>
> int main(int argc, char *argv[])
> {
>
> GMainLoop *loop = NULL;
>
> GstElement *src1, *src2,*dec1,*dec2,*alfa1,*color,*smpte,*queue,*sink;
> GstBus *bus;
>
> guint duracion = 500.0;
> guint transicion = 1;
>
>
> /* init GStreamer */
> gst_init (&argc, &argv);
> bool iniciado = gst_controller_init (&argc, &argv);
>
>
>
> loop = g_main_loop_new (NULL, FALSE);
>
> /* make sure we have input */
> if (argc != 3) {
> g_print ("Usage: %s <filename1> <filename2>\n", argv[0]);
> return -1;
> }
>
> src1 = gst_element_factory_make("filesrc", "src1");
> g_object_set(G_OBJECT(src1),"location",argv[1], NULL);
>
> src2 = gst_element_factory_make("filesrc", "src2");
> g_object_set(G_OBJECT(src1),"location",argv[2], NULL);
>
> GstElement *pipeline = gst_pipeline_new ("video-player");
>
> dec1 = gst_element_factory_make("decodebin2","dec1");
>
> dec2 = gst_element_factory_make("decodebin2","dec2");
>
> cout << "Creando pipeline..." << endl;
>
> bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
> gst_bus_add_watch (bus, bus_call, loop);
> gst_object_unref (bus);
>
> alfa1 = gst_element_factory_make ("alpha","alfa1");
> smpte = gst_element_factory_make ("smptealpha","smpte");
> g_object_set(smpte,"type", transicion, NULL);
> color = gst_element_factory_make ("ffmpegcolorspace", "color");
> GstElement * mixer = gst_element_factory_make("videomixer", "mixer");
>
> if ((!alfa1) || (!smpte) || (!color) || (!mixer))
> {
> g_printerr ("Alguno de los elementos del Bin no pudo ser creado.
> Saliendo\n");
> return 0;
> }
>
>
> // Controller creation
>
>
> GstController * ctrl = gst_object_control_properties(G_OBJECT(smpte),
> "position",NULL);
>
> if (ctrl == NULL)
> {
> GST_WARNING ("No puede controlar el elemento fuente\n");
> return 1;
> }
>
> // Todo valor GValue debe inicializarse en 0
> GValue val_double = { 0, };
> g_value_init (&val_double, G_TYPE_DOUBLE);
>
> // Set interpolation mode
>
>
> GstInterpolationControlSource * csource =
> gst_interpolation_control_source_new();
>
>
> gst_interpolation_control_source_set_interpolation_mode(csource,GST_INTERPOLATE_LINEAR);
>
> // Seteo primer valor
> g_value_set_double(&val_double, 0.0);
> gst_interpolation_control_source_set(csource,(0 *
> GST_MSECOND),&val_double);
>
> // Seteo segundo valor
> g_value_set_double (&val_double, 1.0);
>
> gst_interpolation_control_source_set(csource,(duracion*GST_MSECOND),&val_double);
>
> gst_controller_set_control_source (ctrl, "position", GST_CONTROL_SOURCE
> (csource));
>
> g_object_unref (csource);
> g_value_unset (&val_double);
>
> g_signal_connect (G_OBJECT (dec1), "pad-added", G_CALLBACK
> (on_pad_added),alfa1);
> g_signal_connect (G_OBJECT (dec2), "pad-added", G_CALLBACK
> (on_pad_added),smpte);
>
> queue = gst_element_factory_make("queue", "queue");
> sink = gst_element_factory_make("autovideosink", "sink");
>
> gst_bin_add_many (GST_BIN (pipeline),src1, src2, dec1, dec2, alfa1,
> smpte, mixer, queue, color, sink, NULL);
>
> gst_element_link (src1,dec1);
> gst_element_link (src2,dec2);
> gst_element_link (alfa1,mixer);
> gst_element_link (smpte,mixer);
> gst_element_link (mixer,queue);
> gst_element_link (queue,sink);
>
>
> /* now run */
> gst_element_set_state (pipeline, GST_STATE_PLAYING);
> cout << "Playing..." << endl;
> g_main_loop_run (loop);
>
> /* also clean up */
> gst_element_set_state (pipeline, GST_STATE_NULL);
> gst_object_unref (GST_OBJECT (pipeline));
>
> return 0;
>
> }
>
>
>
>
>
>
> 2011/10/26 Stefan Sauer <ensonic at hora-obscura.de>
>
>> **
>> On 10/26/2011 03:12 AM, Rossana Guerra wrote:
>>
>> Hi I trying to control the position property of a smptealpha element. It
>> controls the opacity of the alpha channel,
>>
>> no, position controls the transition of the fade. 0.0:input1, 1.0:input2.
>>
>> it varies from 0.0 to 1.0.
>> The duration of this setting is 500ms.
>>
>> I am working around this problem, it happens at runtime, I can't figure out
>> what it's wrong.
>>
>>
>> What is not working? The code snippet looks more of less okay. Maybe you
>> can post a full standalone example.
>>
>> Stefan
>>
>> Thanks and regards,
>>
>> Rossana
>>
>>
>> Here's the code;
>> _____________
>>
>>
>> gst_interpolation_control_source_set: assertion `G_VALUE_TYPE (value) ==
>> self->priv->type' failed
>>
>> // Agrego Controlador
>>
>> gdouble duracion = 500;
>>
>> guint64 duracion = 500;
>>
>> GstController * ctrl = gst_object_control_properties(G_OBJECT(smpte),
>> "position",NULL);
>>
>> if (ctrl == NULL)
>> {
>> GST_WARNING ("No puede controlar el elemento fuente\n");
>> return 0;
>> }
>>
>>
>> // Todo valor GValue debe inicializarse en 0
>> GValue val_double = { 0, };
>> g_value_init (&val_double, G_TYPE_DOUBLE);
>>
>>
>> // Seteo modo de interpolacion
>>
>> GstInterpolationControlSource * csource =
>> gst_interpolation_control_source_new();
>>
>>
>> gst_interpolation_control_source_set_interpolation_mode(csource,GST_INTERPOLATE_LINEAR);
>>
>> // Seteo primer valor
>> g_value_set_double(&val_double, 0.0);
>> gst_interpolation_control_source_set(csource,(0 *
>> GST_MSECOND),&val_double);
>>
>> // Seteo segundo valor
>> g_value_set_double (&val_double, 1.0);
>>
>> gst_interpolation_control_source_set(csource,(duracion*GST_MSECOND),&val_double);
>>
>> gst_controller_set_control_source (ctrl, "position", GST_CONTROL_SOURCE
>> (csource));
>>
>> g_object_unref (csource);
>> g_value_unset (&val_double);
>>
>>
>>
>> _______________________________________________
>> gstreamer-devel mailing listgstreamer-devel at lists.freedesktop.orghttp://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
>>
>>
>> _______________________________________________
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>> gstreamer-devel at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
>>
>
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