How to play videos

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vyau

Ven, 06/05/2011 - 10:47

Hi Kusumat:

Just responded to your other thread of the same topic.

I will try to post some source code here but I am having trouble currently. Check your msg and I can email them to you.

--v

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vyau

Ven, 06/05/2011 - 13:29

Hi Kusumat:

This sample program below should play video for you. There is one problem. The Wndowing part in terms of geometry/size, only works on meego netbook and I am still investigating the problem on meego tablet. With this as is, it will run on tablet in fullscreen mode.

Hope this helps.

#include
#include
#include
#include
#include
#include

#define DEFAULT_VIDEOSINK "xvimagesink"

/**
* work with video sink
*/
static GstElement *
find_video_sink (void)
{
GstStateChangeReturn sret;
GstElement *sink;

if ((sink = gst_element_factory_make("xvimagesink", NULL))) {
sret = gst_element_set_state (sink, GST_STATE_READY);
if (sret == GST_STATE_CHANGE_SUCCESS) {
return sink;
}
gst_element_set_state (sink, GST_STATE_NULL);
}
gst_object_unref (sink);

if ((sink = gst_element_factory_make("ximagesink", NULL))) {
sret = gst_element_set_state(sink, GST_STATE_READY);
if (sret == GST_STATE_CHANGE_SUCCESS) {
return sink;
}

gst_element_set_state(sink, GST_STATE_NULL);
}
gst_object_unref (sink);

if (strcmp(DEFAULT_VIDEOSINK, "xvimagesink") == 0 ||
strcmp(DEFAULT_VIDEOSINK, "ximagesink") == 0) {
return NULL;
}

if ((sink = gst_element_factory_make (DEFAULT_VIDEOSINK, NULL))) {
if (GST_IS_BIN (sink)) {
gst_object_unref (sink);
return NULL;
}

sret = gst_element_set_state (sink, GST_STATE_READY);
if (sret == GST_STATE_CHANGE_SUCCESS) {
return sink;
}

gst_element_set_state (sink, GST_STATE_NULL);
}
gst_object_unref (sink);
return NULL;
}

int main(int argc, char *argv[])
{
if (!g_thread_supported ()) {
g_thread_init (NULL);
}

gst_init (&argc, &argv);
QApplication app(argc, argv);
app.setOrganizationName("sample");

// lastWindowClosed() -- QApplication signal
// quit() -- QCoreApplication slot
app.connect(&app, SIGNAL(lastWindowClosed()),
&app, SLOT(quit ()));

/* prepare the pipeline */
GstElement *pipeline = gst_pipeline_new ("xvoverlay");
GstElement *src = gst_element_factory_make ("videotestsrc",
NULL);
GstElement *sink = find_video_sink ();

if (sink == NULL) {
g_error ("Couldn't find a working video sink.");
}

gst_bin_add_many (GST_BIN (pipeline), src,
sink, NULL);
gst_element_link (src, sink);

/* prepare the ui */

QWidget window;
window.resize(800, 480);
window.setWindowTitle("GstXOverlay Qt demo");
window.show();
WId xwinid = window.winId();
gst_x_overlay_set_xwindow_id(GST_X_OVERLAY (sink),
xwinid);

/* run the pipeline */
GstStateChangeReturn sret = gst_element_set_state (pipeline,
GST_STATE_PLAYING);
if (sret == GST_STATE_CHANGE_FAILURE) {
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
/* Exit application */
QTimer::singleShot(0, QApplication::activeWindow(), SLOT(quit()));
}
int ret = app.exec();

//window.hide();
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);

return ret;
}

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vyau

Ven, 06/05/2011 - 13:31

Hi Kusumat:

I used the wrong formatting and as you can see the previous version does not come out legibly...Hope this will work.

This sample program below should play video for you. There is one problem. The Wndowing part in terms of geometry/size, only works on meego netbook and I am still investigating the problem on meego tablet. With this as is, it will run on tablet in fullscreen mode. Hope this helps.

#include
#include
#include
#include
#include
#include

#define DEFAULT_VIDEOSINK "xvimagesink"

/**
* slightly convoluted way to find a working video sink that's not a bin,
* one could use autovideosink from gst-plugins-good instead
*/
static GstElement *
find_video_sink (void)
{
GstStateChangeReturn sret;
GstElement *sink;