/**
* gst_plugin_load_by_name:
* @name: name of plugin to load
*
* Load the named plugin. Refs the plugin.
*
* Returns: A reference to a loaded plugin, or NULL on error.
*/
GstPlugin *
gst_plugin_load_by_name (const gchar * name)
{
GstPlugin *plugin, *newplugin;
GError *error = NULL;
GST_DEBUG ("looking up plugin %s in default registry", name);
plugin = gst_registry_find_plugin (gst_registry_get_default (), name);
if (plugin) {
GST_DEBUG ("loading plugin %s from file %s", name, plugin->filename);
newplugin = gst_plugin_load_file (plugin->filename, &error);
gst_object_unref (plugin);
if (!newplugin) {
GST_WARNING ("load_plugin error: %s", error->message);
g_error_free (error);
return NULL;
}
/* newplugin was reffed by load_file */
return newplugin;
}
GST_DEBUG ("Could not find plugin %s in registry", name);
return NULL;
}
/**
* gst_plugin_load:
* @plugin: plugin to load
*
* Loads @plugin. Note that the *return value* is the loaded plugin; @plugin is
* untouched. The normal use pattern of this function goes like this:
*
* <programlisting>
* GstPlugin *loaded_plugin;
* loaded_plugin = gst_plugin_load (plugin);
* // presumably, we're no longer interested in the potentially-unloaded plugin
* gst_object_unref (plugin);
* plugin = loaded_plugin;
* </programlisting>
*
* Returns: A reference to a loaded plugin, or NULL on error.
*/
GstPlugin *
gst_plugin_load (GstPlugin * plugin)
{
GError *error = NULL;
GstPlugin *newplugin;
if (gst_plugin_is_loaded (plugin)) {
return plugin;
}
if (!(newplugin = gst_plugin_load_file (plugin->filename, &error)))
goto load_error;
return newplugin;
load_error:
{
GST_WARNING ("load_plugin error: %s", error->message);
g_error_free (error);
return NULL;
}
}
static gboolean
do_plugin_load (GstPluginLoader * l, const gchar * filename, guint tag)
{
GstPlugin *newplugin;
GList *chunks = NULL;
GST_DEBUG ("Plugin scanner loading file %s. tag %u", filename, tag);
#if 0 /* Test code - crash based on filename */
if (strstr (filename, "coreelements") == NULL) {
g_printerr ("Crashing on file %s\n", filename);
g_printerr ("%d", *(gint *) (NULL));
}
#endif
newplugin = gst_plugin_load_file ((gchar *) filename, NULL);
if (newplugin) {
guint hdr_pos;
guint offset;
/* Now serialise the plugin details and send */
if (!_priv_gst_registry_chunks_save_plugin (&chunks,
gst_registry_get_default (), newplugin))
goto fail;
/* Store where the header is, write an empty one, then write
* all the payload chunks, then fix up the header size */
hdr_pos = l->tx_buf_write;
offset = HEADER_SIZE;
put_packet (l, PACKET_PLUGIN_DETAILS, tag, NULL, 0);
if (chunks) {
GList *walk;
for (walk = chunks; walk; walk = g_list_next (walk)) {
GstRegistryChunk *cur = walk->data;
put_chunk (l, cur, &offset);
_priv_gst_registry_chunk_free (cur);
}
g_list_free (chunks);
/* Store the size of the written payload */
GST_WRITE_UINT32_BE (l->tx_buf + hdr_pos + 4, offset - HEADER_SIZE);
}
#if 0 /* Test code - corrupt the tx buffer based on filename */
if (strstr (filename, "sink") != NULL) {
int fd, res;
g_printerr ("Corrupting tx buf on file %s\n", filename);
fd = open ("/dev/urandom", O_RDONLY);
res = read (fd, l->tx_buf, l->tx_buf_size);
close (fd);
}
#endif
gst_object_unref (newplugin);
} else {
put_packet (l, PACKET_PLUGIN_DETAILS, tag, NULL, 0);
}
return TRUE;
fail:
put_packet (l, PACKET_PLUGIN_DETAILS, tag, NULL, 0);
if (chunks) {
GList *walk;
for (walk = chunks; walk; walk = g_list_next (walk)) {
GstRegistryChunk *cur = walk->data;
_priv_gst_registry_chunk_free (cur);
}
g_list_free (chunks);
}
return FALSE;
}
int
main (int argc, char *argv[])
{
gboolean print_all = FALSE;
gboolean do_print_blacklist = FALSE;
gboolean plugin_name = FALSE;
gboolean print_aii = FALSE;
gboolean uri_handlers = FALSE;
gboolean check_exists = FALSE;
gchar *min_version = NULL;
guint minver_maj = GST_VERSION_MAJOR;
guint minver_min = GST_VERSION_MINOR;
guint minver_micro = 0;
#ifndef GST_DISABLE_OPTION_PARSING
GOptionEntry options[] = {
{"print-all", 'a', 0, G_OPTION_ARG_NONE, &print_all,
N_("Print all elements"), NULL},
{"print-blacklist", 'b', 0, G_OPTION_ARG_NONE, &do_print_blacklist,
N_("Print list of blacklisted files"), NULL},
{"print-plugin-auto-install-info", '\0', 0, G_OPTION_ARG_NONE, &print_aii,
N_("Print a machine-parsable list of features the specified plugin "
"or all plugins provide.\n "
"Useful in connection with external automatic plugin "
"installation mechanisms"), NULL},
{"plugin", '\0', 0, G_OPTION_ARG_NONE, &plugin_name,
N_("List the plugin contents"), NULL},
{"exists", '\0', 0, G_OPTION_ARG_NONE, &check_exists,
N_("Check if the specified element or plugin exists"), NULL},
{"atleast-version", '\0', 0, G_OPTION_ARG_STRING, &min_version,
N_
("When checking if an element or plugin exists, also check that its "
"version is at least the version specified"), NULL},
{"uri-handlers", 'u', 0, G_OPTION_ARG_NONE, &uri_handlers,
N_
("Print supported URI schemes, with the elements that implement them"),
NULL},
GST_TOOLS_GOPTION_VERSION,
{NULL}
};
GOptionContext *ctx;
GError *err = NULL;
#endif
setlocale (LC_ALL, "");
#ifdef ENABLE_NLS
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
textdomain (GETTEXT_PACKAGE);
#endif
/* avoid glib warnings when inspecting deprecated properties */
g_setenv ("G_ENABLE_DIAGNOSTIC", "0", FALSE);
g_set_prgname ("gst-inspect-" GST_API_VERSION);
#ifndef GST_DISABLE_OPTION_PARSING
ctx = g_option_context_new ("[ELEMENT-NAME | PLUGIN-NAME]");
g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE);
g_option_context_add_group (ctx, gst_init_get_option_group ());
if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
g_printerr ("Error initializing: %s\n", err->message);
g_clear_error (&err);
g_option_context_free (ctx);
return -1;
}
g_option_context_free (ctx);
#else
gst_init (&argc, &argv);
#endif
gst_tools_print_version ();
if (print_all && argc > 1) {
g_printerr ("-a requires no extra arguments\n");
return -1;
}
if (uri_handlers && argc > 1) {
g_printerr ("-u requires no extra arguments\n");
return -1;
}
/* --atleast-version implies --exists */
if (min_version != NULL) {
if (sscanf (min_version, "%u.%u.%u", &minver_maj, &minver_min,
&minver_micro) < 2) {
g_printerr ("Can't parse version '%s' passed to --atleast-version\n",
min_version);
return -1;
}
check_exists = TRUE;
}
if (check_exists) {
int exit_code;
if (argc == 1) {
g_printerr ("--exists requires an extra command line argument\n");
exit_code = -1;
} else {
if (!plugin_name) {
GstPluginFeature *feature;
feature = gst_registry_lookup_feature (gst_registry_get (), argv[1]);
if (feature != NULL && gst_plugin_feature_check_version (feature,
minver_maj, minver_min, minver_micro)) {
exit_code = 0;
} else {
exit_code = 1;
}
} else {
/* FIXME: support checking for plugins too */
g_printerr ("Checking for plugins is not supported yet\n");
exit_code = -1;
}
}
return exit_code;
}
/* if no arguments, print out list of elements */
if (uri_handlers) {
print_all_uri_handlers ();
} else if (argc == 1 || print_all) {
if (do_print_blacklist)
print_blacklist ();
else {
if (print_aii)
print_all_plugin_automatic_install_info ();
else
print_element_list (print_all);
}
} else {
/* else we try to get a factory */
GstElementFactory *factory;
GstPlugin *plugin;
const char *arg = argv[argc - 1];
int retval;
if (!plugin_name) {
factory = gst_element_factory_find (arg);
/* if there's a factory, print out the info */
if (factory) {
retval = print_element_info (factory, print_all);
gst_object_unref (factory);
} else {
retval = print_element_features (arg);
}
} else {
retval = -1;
}
/* otherwise check if it's a plugin */
if (retval) {
plugin = gst_registry_find_plugin (gst_registry_get (), arg);
/* if there is such a plugin, print out info */
if (plugin) {
if (print_aii) {
print_plugin_automatic_install_info (plugin);
} else {
print_plugin_info (plugin);
print_plugin_features (plugin);
}
} else {
GError *error = NULL;
if (g_file_test (arg, G_FILE_TEST_EXISTS)) {
plugin = gst_plugin_load_file (arg, &error);
if (plugin) {
if (print_aii) {
print_plugin_automatic_install_info (plugin);
} else {
print_plugin_info (plugin);
print_plugin_features (plugin);
}
} else {
g_printerr (_("Could not load plugin file: %s\n"), error->message);
g_clear_error (&error);
return -1;
}
} else {
g_printerr (_("No such element or plugin '%s'\n"), arg);
return -1;
}
}
}
}
return 0;
}
bool VideoPlayerBackend::initGStreamer(QString *errorMessage)
{
static bool loaded = false;
if (loaded)
return true;
GError *err;
if (gst_init_check(0, 0, &err) == FALSE)
{
Q_ASSERT(err);
qWarning() << "GStreamer initialization failed:" << err->message;
if (errorMessage)
*errorMessage = QString::fromLatin1("initialization failed: ") + QString::fromLatin1(err->message);
g_error_free(err);
return false;
}
#ifdef Q_OS_LINUX
if (QString::fromLatin1(GSTREAMER_PLUGINS).isEmpty())
return true;
#endif
#ifdef Q_OS_WIN
#define EXT ".dll"
#else
#define EXT ".so"
#endif
const char *plugins[] =
{
"libgsttypefindfunctions"EXT, "libgstapp"EXT, "libgstdecodebin2"EXT, "libgstmatroska"EXT,
"libgstffmpegcolorspace"EXT, "libgstcoreelements"EXT,
#ifndef Q_OS_WIN
"libgstffmpeg"EXT,
#endif
#ifdef Q_OS_WIN
"libgstffmpeg-lgpl"EXT, "libgstautodetect"EXT,
#elif defined(Q_OS_MAC)
"libgstosxaudio"EXT,
#endif
0
};
#undef EXT
#if defined(Q_OS_MAC)
QString pluginPath = QApplication::applicationDirPath() + QLatin1String("/../PlugIns/gstreamer/");
#else
QString pluginPath = QDir::toNativeSeparators(QApplication::applicationDirPath() + QDir::separator());
#endif
#if defined(GSTREAMER_PLUGINS) and not defined(Q_OS_MAC)
QString ppx = QDir::toNativeSeparators(QString::fromLatin1(GSTREAMER_PLUGINS "/"));
if (QDir::isAbsolutePath(ppx))
pluginPath = ppx;
else
pluginPath += ppx;
#endif
if (!QFile::exists(pluginPath))
{
qWarning() << "gstreamer: Plugin path" << pluginPath << "does not exist";
if (errorMessage)
*errorMessage = QString::fromLatin1("plugin path (%1) does not exist").arg(pluginPath);
return false;
}
bool success = true;
QByteArray path = QFile::encodeName(pluginPath);
int pathEnd = path.size();
if (errorMessage)
errorMessage->clear();
for (const char **p = plugins; *p; ++p)
{
path.truncate(pathEnd);
path.append(*p);
GError *err = 0;
GstPlugin *plugin = gst_plugin_load_file(path.constData(), &err);
if (!plugin)
{
Q_ASSERT(err);
qWarning() << "gstreamer: Failed to load plugin" << *p << ":" << err->message;
if (errorMessage)
errorMessage->append(QString::fromLatin1("plugin '%1' failed: %2\n").arg(QLatin1String(*p))
.arg(QLatin1String(err->message)));
g_error_free(err);
success = false;
}
else
{
Q_ASSERT(!err);
gst_object_unref(plugin);
}
}
if (success)
loaded = true;
return success;
}
int
main (int argc, char *argv[])
{
gboolean print_all = FALSE;
gboolean print_aii = FALSE;
GOptionEntry options[] = {
{"print-all", 'a', 0, G_OPTION_ARG_NONE, &print_all,
N_("Print all elements"), NULL},
{"print-plugin-auto-install-info", '\0', 0, G_OPTION_ARG_NONE, &print_aii,
N_("Print a machine-parsable list of features the specified plugin "
"provides.\n "
"Useful in connection with external automatic plugin "
"installation mechanisms"), NULL},
GST_TOOLS_GOPTION_VERSION,
{NULL}
};
GOptionContext *ctx;
GError *err = NULL;
#ifdef ENABLE_NLS
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
textdomain (GETTEXT_PACKAGE);
#endif
if (!g_thread_supported ())
g_thread_init (NULL);
ctx = g_option_context_new ("[ELEMENT-NAME | PLUGIN-NAME]");
g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE);
g_option_context_add_group (ctx, gst_init_get_option_group ());
if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
g_print ("Error initializing: %s\n", err->message);
exit (1);
}
g_option_context_free (ctx);
gst_tools_print_version ("gst-inspect");
if (print_all && argc > 2) {
g_print ("-a requires no extra arguments\n");
return 1;
}
/* if no arguments, print out list of elements */
if (argc == 1 || print_all) {
print_element_list (print_all);
/* else we try to get a factory */
} else {
GstElementFactory *factory;
GstPlugin *plugin;
const char *arg = argv[argc - 1];
int retval;
factory = gst_element_factory_find (arg);
/* if there's a factory, print out the info */
if (factory) {
retval = print_element_info (factory, print_all);
gst_object_unref (factory);
} else {
retval = print_element_features (arg);
}
/* otherwise check if it's a plugin */
if (retval) {
plugin = gst_default_registry_find_plugin (arg);
/* if there is such a plugin, print out info */
if (plugin) {
if (print_aii) {
print_plugin_automatic_install_info (plugin);
} else {
print_plugin_info (plugin);
print_plugin_features (plugin);
}
} else {
GError *error = NULL;
if (g_file_test (arg, G_FILE_TEST_EXISTS)) {
plugin = gst_plugin_load_file (arg, &error);
if (plugin) {
if (print_aii) {
print_plugin_automatic_install_info (plugin);
} else {
print_plugin_info (plugin);
print_plugin_features (plugin);
}
} else {
g_print (_("Could not load plugin file: %s\n"), error->message);
g_error_free (error);
return -1;
}
} else {
g_print (_("No such element or plugin '%s'\n"), arg);
return -1;
}
}
}
}
return 0;
}
