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 14:15:10 PDT 2011
Sorry, I had some copy/paste errors. Here's the code, the runtime error is:
CRITICAL **: gst_interpolation_control_source_set: assertion `G_VALUE_TYPE
(value) == self->priv->type' failed.
I changed the duracion value variable unit to second (replacing 500 with 5),
and I tryed with GST_SECOND insted, but it didn't work.
So I wrote it back to GST_MSECOND.
The code ΅without" typing errors:
#include <gst.h>
#include <controller/gstcontroller.h>
#include <iostream>
#include <string.h>
using namespace std;
// Manejador de errores
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;
gint transicion = 1;
cout << "Inicio..." << endl;
/* init GStreamer */
gst_init (&argc, &argv);
bool iniciado = gst_controller_init (&argc, &argv);
loop = g_main_loop_new (NULL, FALSE);
if (argc != 3) {
g_print ("Usage: %s <filename1> <filename2>\n", argv[0]);
return -1;
}
cout << "Creando..." << endl;
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;
}
// Agrego Controlador
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_int = { 0, };
g_value_init (&val_int, G_TYPE_INT);
// 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_int(&val_int, 0);
gst_interpolation_control_source_set(csource,(0 * GST_MSECOND),&val_int);
// Seteo segundo valor
g_value_set_int (&val_int, 1);
gst_interpolation_control_source_set(csource,(duracion*GST_MSECOND),&val_int);
gst_controller_set_control_source (ctrl, "position", GST_CONTROL_SOURCE
(csource));
g_object_unref (csource);
g_value_unset (&val_int);
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 Rossana Guerra <guerra.rossana at gmail.com>
> 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
>>>
>>>
>>>
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> gstreamer-devel at lists.freedesktop.org
>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>
>>>
>>
>
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