///////////////////////////////////////////////////////////////////////////////
// (static) super-initialization - called once at application startup
bool
LLMediaImplGStreamer::
startup ( LLMediaManagerData* init_data )
{
static bool done_init = false;
if (!done_init)
{
// Init the glib type system - we need it.
g_type_init();
// Get symbols!
if (! grab_gst_syms("libgstreamer-0.10.so.0",
"libgstvideo-0.10.so.0",
"libgstaudio-0.10.so.0") )
{
WARNMSG("Couldn't find suitable GStreamer 0.10 support on this system - video playback disabled.");
return false;
}
if (llgst_segtrap_set_enabled)
llgst_segtrap_set_enabled(FALSE);
else
WARNMSG("gst_segtrap_set_enabled() is not available; Automated crash-reporter may cease to function until next restart.");
// Protect against GStreamer resetting the locale, yuck.
static std::string saved_locale;
saved_locale = setlocale(LC_ALL, NULL);
if (0 == llgst_init_check(NULL, NULL, NULL))
{
WARNMSG("GST init failed for unspecified reason.");
setlocale(LC_ALL, saved_locale.c_str() );
return false;
}
setlocale(LC_ALL, saved_locale.c_str() );
// Init our custom plugins - only really need do this once.
gst_slvideo_init_class();
#if 0
gst_slsound_init_class();
#endif
done_init = true;
}
return true;
}
BOOL
LLMediaImplGStreamer::
init ()
{
static bool done_init = false;
if (!done_init)
{
// Init the glib type system - we need it.
g_type_init();
// Get symbols!
if (! grab_gst_syms("libgstreamer-0.10.so.0",
"libgstvideo-0.10.so.0",
"libgstaudio-0.10.so.0") )
{
llwarns << "Couldn't find suitable GStreamer 0.10 support on this system - video playback disabled." << llendl;
return FALSE;
}
if (llgst_segtrap_set_enabled)
llgst_segtrap_set_enabled(FALSE);
else
llwarns << "gst_segtrap_set_enabled() is not available; Second Life automated crash-reporter may cease to function until next restart." << llendl;
if (0 == llgst_init_check(NULL, NULL, NULL))
{
llwarns << "GST init failed for unspecified reason." << llendl;
return FALSE;
}
// Init our custom plugins - only really need do this once.
gst_slvideo_init_class();
#if 0
gst_slsound_init_class();
#endif
done_init = true;
}
mVolume = 0.1234567; // minor hack to force an initial volume update
// Create a pumpable main-loop for this media
mPump = g_main_loop_new (NULL, FALSE);
if (!mPump)
{
return FALSE;
}
// instantiate a playbin element to do the hard work
mPlaybin = llgst_element_factory_make ("playbin", "play");
if (!mPlaybin)
{
// todo: cleanup pump
return FALSE;
}
if (NULL == getenv("LL_GSTREAMER_EXTERNAL")) {
// instantiate and connect a custom video sink
mVideoSink =
GST_SLVIDEO(llgst_element_factory_make ("private-slvideo", "slvideo"));
if (!mVideoSink)
{
llwarns << "Could not instantiate private-slvideo element."
<< llendl;
// todo: cleanup.
return FALSE;
}
g_object_set(mPlaybin, "video-sink", mVideoSink, NULL);
#ifdef LL_GST_SOUNDSINK
// instantiate and connect a custom audio sink
mAudioSink =
GST_SLSOUND(llgst_element_factory_make ("private-slsound", "slsound"));
if (!mAudioSink)
{
llwarns << "Could not instantiate private-slsound element."
<< llendl;
// todo: cleanup.
return FALSE;
}
g_object_set(mPlaybin, "audio-sink", mAudioSink, NULL);
#endif
}
return LLMediaMovieBase::init();
}
//static
bool
MediaPluginGStreamer010::startup()
{
// first - check if GStreamer is explicitly disabled
if (NULL != getenv("LL_DISABLE_GSTREAMER"))
return false;
// only do global GStreamer initialization once.
if (!mDoneInit)
{
g_thread_init(NULL);
// Init the glib type system - we need it.
g_type_init();
// Get symbols!
#if LL_DARWIN
if (! grab_gst_syms("libgstreamer-0.10.dylib",
"libgstvideo-0.10.dylib") )
#elseif LL_WINDOWS
if (! grab_gst_syms("libgstreamer-0.10.dll",
"libgstvideo-0.10.dll") )
#else // linux or other ELFy unixoid
if (! grab_gst_syms("libgstreamer-0.10.so.0",
"libgstvideo-0.10.so.0") )
#endif
{
WARNMSG("Couldn't find suitable GStreamer 0.10 support on this system - video playback disabled.");
return false;
}
if (llgst_segtrap_set_enabled)
{
llgst_segtrap_set_enabled(FALSE);
}
else
{
WARNMSG("gst_segtrap_set_enabled() is not available; plugin crashes won't be caught.");
}
#if LL_LINUX
// Gstreamer tries a fork during init, waitpid-ing on it,
// which conflicts with any installed SIGCHLD handler...
struct sigaction tmpact, oldact;
if (llgst_registry_fork_set_enabled) {
// if we can disable SIGCHLD-using forking behaviour,
// do it.
llgst_registry_fork_set_enabled(false);
}
else {
// else temporarily install default SIGCHLD handler
// while GStreamer initialises
tmpact.sa_handler = SIG_DFL;
sigemptyset( &tmpact.sa_mask );
tmpact.sa_flags = SA_SIGINFO;
sigaction(SIGCHLD, &tmpact, &oldact);
}
#endif // LL_LINUX
// Protect against GStreamer resetting the locale, yuck.
static std::string saved_locale;
saved_locale = setlocale(LC_ALL, NULL);
// finally, try to initialize GStreamer!
GError *err = NULL;
gboolean init_gst_success = llgst_init_check(NULL, NULL, &err);
// restore old locale
setlocale(LC_ALL, saved_locale.c_str() );
#if LL_LINUX
// restore old SIGCHLD handler
if (!llgst_registry_fork_set_enabled)
sigaction(SIGCHLD, &oldact, NULL);
#endif // LL_LINUX
if (!init_gst_success) // fail
{
if (err)
{
WARNMSG("GST init failed: %s", err->message);
g_error_free(err);
}
else
{
WARNMSG("GST init failed for unspecified reason.");
}
return false;
}
// Init our custom plugins - only really need do this once.
gst_slvideo_init_class();
mDoneInit = true;
}
return true;
}
