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ladspa: add initial liblrdf support.
Get classification from rdf metadata.
This commit is contained in:
Stefan Kost
parent
1b7a9ca6c5
commit
eae238a125
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@ -860,6 +860,13 @@ AG_GST_CHECK_FEATURE(LADSPA, [ladspa], ladspa, [
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LADSPA_LIBS="-ldl",
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HAVE_LADSPA="no")
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CFLAGS="$save_cflags"
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PKG_CHECK_MODULES(LRDF, lrdf, HAVE_LRDF=yes, HAVE_LRDF=no)
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if test $HAVE_LRDF = "yes"; then
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AC_DEFINE(HAVE_LRDF, 1, [Define if we have liblrdf])
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fi
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AC_SUBST(LRDF_LIBS)
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AC_SUBST(LRDF_CFLAGS)
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])
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AC_SUBST(LADSPA_LIBS)
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@ -1,8 +1,8 @@
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plugin_LTLIBRARIES = libgstladspa.la
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libgstladspa_la_SOURCES = gstsignalprocessor.c gstladspa.c
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libgstladspa_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CONTROLLER_CFLAGS) $(GST_CFLAGS)
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libgstladspa_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) -lgstaudio-$(GST_MAJORMINOR) $(LIBM) $(LADSPA_LIBS)
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libgstladspa_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CONTROLLER_CFLAGS) $(GST_CFLAGS) $(LRDF_CFLAGS)
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libgstladspa_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) -lgstaudio-$(GST_MAJORMINOR) $(LIBM) $(LADSPA_LIBS) $(LRDF_LIBS)
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libgstladspa_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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libgstladspa_la_LIBTOOLFLAGS = --tag=disable-static
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@ -29,6 +29,9 @@
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#include "gstladspa.h"
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#include <ladspa.h> /* main ladspa sdk include file */
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#if HAVE_LRDF
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#include <lrdf.h>
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#endif
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/* 1.0 and the 1.1 preliminary headers don't define a version, but 1.1 final
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does */
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@ -72,6 +75,10 @@ gst_ladspa_base_init (gpointer g_class)
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GstElementDetails *details;
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LADSPA_Descriptor *desc;
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guint j, audio_in_count, audio_out_count, control_in_count, control_out_count;
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gchar *klass_tags;
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#if HAVE_LRDF
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gchar *uri, *extra_klass_tags = NULL;
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#endif
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GST_DEBUG ("base_init %p", g_class);
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@ -133,21 +140,104 @@ gst_ladspa_base_init (gpointer g_class)
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if (!details->author)
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details->author = g_strdup ("no author available");
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#if HAVE_LRDF
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/* libldrf support, we want to get extra class information here */
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uri = g_strdup_printf (LADSPA_BASE "%ld", desc->UniqueID);
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if (uri) {
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lrdf_statement query = { 0, };
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lrdf_uris *uris;
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gchar *str, *base_type = NULL;
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GST_DEBUG ("uri (id=%d) : %s", desc->UniqueID, uri);
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/* we can take this directly from 'desc', keep this example for future
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attributes.
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if ((str = lrdf_get_setting_metadata (uri, "title"))) {
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GST_DEBUG ("title : %s", str);
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}
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if ((str = lrdf_get_setting_metadata (uri, "creator"))) {
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GST_DEBUG ("creator : %s", str);
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}
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*/
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/* get the rdf:type for this plugin */
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query.subject = uri;
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query.predicate = RDF_BASE "type";
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query.object = "?";
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query.next = NULL;
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uris = lrdf_match_multi (&query);
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if (uris) {
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if (uris->count == 1) {
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base_type = g_strdup (uris->items[0]);
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GST_DEBUG ("base_type : %s", base_type);
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}
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lrdf_free_uris (uris);
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}
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/* query taxonomy */
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if (base_type) {
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uris = lrdf_get_all_superclasses (base_type);
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if (uris) {
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guint32 j;
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for (j = 0; j < uris->count; j++) {
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GST_LOG ("parent_type_uri : %s", uris->items[j]);
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if ((str = lrdf_get_label (uris->items[j]))) {
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GST_DEBUG ("parent_type_label : %s", str);
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if (extra_klass_tags) {
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gchar *old_tags = extra_klass_tags;
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extra_klass_tags = g_strconcat (extra_klass_tags, "/", str, NULL);
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g_free (old_tags);
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} else {
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extra_klass_tags = g_strconcat ("/", str, NULL);
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}
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}
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}
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lrdf_free_uris (uris);
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}
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g_free (base_type);
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}
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/* we can use this for the presets
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uris = lrdf_get_setting_uris (desc->UniqueID);
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if (uris) {
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guint32 j;
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for (j = 0; j < uris->count; j++) {
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GST_INFO ("setting_uri : %s", uris->items[j]);
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if ((str = lrdf_get_label (uris->items[j]))) {
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GST_INFO ("setting_label : %s", str);
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}
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}
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lrdf_free_uris (uris);
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}
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*/
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}
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g_free (uri);
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#endif
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if (gsp_class->num_audio_in == 0)
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details->klass = "Source/Audio/LADSPA";
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klass_tags = "Source/Audio/LADSPA";
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else if (gsp_class->num_audio_out == 0) {
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if (gsp_class->num_control_out == 0)
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details->klass = "Sink/Audio/LADSPA";
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klass_tags = "Sink/Audio/LADSPA";
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else
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details->klass = "Sink/Analyzer/Audio/LADSPA";
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klass_tags = "Sink/Analyzer/Audio/LADSPA";
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} else
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details->klass = "Filter/Effect/Audio/LADSPA";
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klass_tags = "Filter/Effect/Audio/LADSPA";
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if (extra_klass_tags) {
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details->klass = g_strconcat (klass_tags, extra_klass_tags, NULL);
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g_free (extra_klass_tags);
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} else {
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details->klass = klass_tags;
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}
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GST_INFO ("tags : %s", details->klass);
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gst_element_class_set_details (element_class, details);
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g_free (details->longname);
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g_free (details->author);
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g_free (details);
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klass->audio_in_portnums = g_new0 (gint, gsp_class->num_audio_in);
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klass->audio_out_portnums = g_new0 (gint, gsp_class->num_audio_out);
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klass->control_in_portnums = g_new0 (gint, gsp_class->num_control_in);
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@ -593,7 +683,6 @@ ladspa_describe_plugin (LADSPA_Descriptor_Function descriptor_function)
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(GInstanceInitFunc) gst_ladspa_init,
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};
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GType type;
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/* construct the type */
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type_name = g_strdup_printf ("ladspa-%s", desc->Label);
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g_strcanon (type_name, G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-+", '-');
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@ -617,6 +706,36 @@ ladspa_describe_plugin (LADSPA_Descriptor_Function descriptor_function)
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}
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}
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#if HAVE_LRDF
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static gboolean
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ladspa_rdf_directory_search (const char *dir_name)
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{
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GDir *dir;
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gchar *file_name, *file_uri;
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const gchar *entry_name;
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gint ok;
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GST_INFO ("scanning directory for rdfs \"%s\"", dir_name);
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dir = g_dir_open (dir_name, 0, NULL);
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if (!dir)
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return FALSE;
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while ((entry_name = g_dir_read_name (dir))) {
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file_name = g_build_filename (dir_name, entry_name, NULL);
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file_uri = g_strconcat ("file://", file_name, NULL);
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ok = lrdf_read_file (file_uri);
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GST_INFO ("read %s : %d", file_uri, ok);
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g_free (file_uri);
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g_free (file_name);
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}
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g_dir_close (dir);
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return TRUE;
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}
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#endif
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/* search just the one directory.
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*/
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static gboolean
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@ -629,7 +748,7 @@ ladspa_plugin_directory_search (const char *dir_name)
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GModule *plugin;
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gboolean ok = FALSE;
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GST_INFO ("scanning directory \"%s\"", dir_name);
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GST_INFO ("scanning directory for plugins \"%s\"", dir_name);
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dir = g_dir_open (dir_name, 0, NULL);
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if (!dir)
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@ -644,6 +763,7 @@ ladspa_plugin_directory_search (const char *dir_name)
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if (g_module_symbol (plugin, "ladspa_descriptor",
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(gpointer *) & descriptor_function)) {
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/* we've found a ladspa_descriptor function, now introspect it. */
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GST_INFO ("describe %s", file_name);
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ladspa_describe_plugin (descriptor_function);
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ok = TRUE;
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} else {
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@ -663,11 +783,14 @@ ladspa_plugin_directory_search (const char *dir_name)
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static gboolean
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ladspa_plugin_path_search (void)
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{
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const char *search_path;
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char *ladspa_path;
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const gchar *search_path;
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gchar *ladspa_path;
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gchar **paths;
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gint i, j, path_entries;
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gboolean res = FALSE, skip;
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#if HAVE_LRDF
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gchar *pos, *prefix, *rdf_path;
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#endif
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search_path = g_getenv ("LADSPA_PATH");
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if (search_path) {
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@ -682,6 +805,30 @@ ladspa_plugin_path_search (void)
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path_entries = g_strv_length (paths);
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GST_INFO ("%d dirs in search paths \"%s\"", path_entries, ladspa_path);
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#if HAVE_LRDF
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for (i = 0; i < path_entries; i++) {
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skip = FALSE;
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for (j = 0; j < i; j++) {
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if (!strcmp (paths[i], paths[j])) {
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skip = TRUE;
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break;
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}
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}
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if (skip)
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break;
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/* transform path: /usr/lib/ladspa -> /usr/share/ladspa/rdf/
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* yes, this is ugly, but lrdf has not searchpath
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*/
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if ((pos = strstr (paths[i], "/lib/ladspa"))) {
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prefix = g_strndup (paths[i], (pos - paths[i]));
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rdf_path = g_build_filename (prefix, "share", "ladspa", "rdf", NULL);
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ladspa_rdf_directory_search (rdf_path);
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g_free (rdf_path);
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g_free (prefix);
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}
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}
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#endif
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for (i = 0; i < path_entries; i++) {
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skip = FALSE;
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for (j = 0; j < i; j++) {
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@ -711,6 +858,10 @@ plugin_init (GstPlugin * plugin)
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"LADSPA_PATH",
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GST_LADSPA_DEFAULT_PATH, NULL, GST_PLUGIN_DEPENDENCY_FLAG_NONE);
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#if HAVE_LRDF
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lrdf_init ();
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#endif
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parent_class = g_type_class_ref (GST_TYPE_SIGNAL_PROCESSOR);
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ladspa_plugin = plugin;
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