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-rw-r--r--ext/lv2/gstlv2.c588
1 files changed, 588 insertions, 0 deletions
diff --git a/ext/lv2/gstlv2.c b/ext/lv2/gstlv2.c
new file mode 100644
index 00000000..5d05f603
--- /dev/null
+++ b/ext/lv2/gstlv2.c
@@ -0,0 +1,588 @@
+/* GStreamer
+ * Copyright (C) 1999 Erik Walthinsen <omega@cse.ogi.edu>
+ * 2001 Steve Baker <stevebaker_org@yahoo.co.uk>
+ * 2003 Andy Wingo <wingo at pobox.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include <string.h>
+#include <math.h>
+#include <gst/audio/audio.h>
+#include <gst/controller/gstcontroller.h>
+
+#include "gstlv2.h"
+#include <slv2/slv2.h>
+
+#define GST_SLV2_PLUGIN_QDATA g_quark_from_static_string("slv2-plugin")
+
+static void gst_lv2_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec);
+
+static void gst_lv2_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec);
+
+static gboolean gst_lv2_setup (GstSignalProcessor * sigproc, guint sample_rate);
+static gboolean gst_lv2_start (GstSignalProcessor * sigproc);
+static void gst_lv2_stop (GstSignalProcessor * sigproc);
+static void gst_lv2_cleanup (GstSignalProcessor * sigproc);
+static void gst_lv2_process (GstSignalProcessor * sigproc, guint nframes);
+
+static SLV2World world;
+SLV2Value audio_class;
+SLV2Value control_class;
+SLV2Value input_class;
+SLV2Value output_class;
+SLV2Value integer_prop;
+SLV2Value toggled_prop;
+
+static GstSignalProcessorClass *parent_class;
+
+static GstPlugin *gst_lv2_plugin;
+
+GST_DEBUG_CATEGORY_STATIC (lv2_debug);
+#define GST_CAT_DEFAULT lv2_debug
+
+
+static void
+gst_lv2_base_init (gpointer g_class)
+{
+ GstLV2Class *klass = (GstLV2Class *) g_class;
+ GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+ GstSignalProcessorClass *gsp_class = GST_SIGNAL_PROCESSOR_CLASS (g_class);
+ GstElementDetails *details;
+ SLV2Plugin lv2plugin;
+ SLV2Value val;
+ guint j, audio_in_count, audio_out_count, control_in_count, control_out_count;
+ gchar *klass_tags;
+
+ GST_DEBUG ("base_init %p", g_class);
+
+ lv2plugin = (SLV2Plugin) g_type_get_qdata (G_OBJECT_CLASS_TYPE (klass),
+ GST_SLV2_PLUGIN_QDATA);
+
+ g_assert (lv2plugin);
+
+ /* pad templates */
+ gsp_class->num_audio_in = 0;
+ gsp_class->num_audio_out = 0;
+ /* properties */
+ gsp_class->num_control_in = 0;
+ gsp_class->num_control_out = 0;
+
+ for (j = 0; j < slv2_plugin_get_num_ports (lv2plugin); j++) {
+ SLV2Port port = slv2_plugin_get_port_by_index (lv2plugin, j);
+ if (slv2_port_is_a (lv2plugin, port, audio_class)) {
+ gchar *name =
+ g_strdup (slv2_value_as_string (slv2_port_get_symbol (lv2plugin,
+ port)));
+
+ GST_DEBUG ("LV2 port name: \"%s\"", name);
+
+ if (slv2_port_is_a (lv2plugin, port, input_class))
+ gst_signal_processor_class_add_pad_template (gsp_class, name,
+ GST_PAD_SINK, gsp_class->num_audio_in++);
+ else if (slv2_port_is_a (lv2plugin, port, output_class))
+ gst_signal_processor_class_add_pad_template (gsp_class, name,
+ GST_PAD_SRC, gsp_class->num_audio_out++);
+ /* TODO: else ignore plugin */
+
+ g_free (name);
+ } else if (slv2_port_is_a (lv2plugin, port, control_class)) {
+ if (slv2_port_is_a (lv2plugin, port, input_class))
+ gsp_class->num_control_in++;
+ else if (slv2_port_is_a (lv2plugin, port, output_class))
+ gsp_class->num_control_out++;
+ /* TODO: else ignore plugin */
+ }
+ /* TODO: else ignore plugin */
+ }
+
+ /* construct the element details struct */
+ details = g_new0 (GstElementDetails, 1);
+ val = slv2_plugin_get_name (lv2plugin);
+ if (val) {
+ details->longname = g_strdup (slv2_value_as_string (val));
+ slv2_value_free (val);
+ } else {
+ details->longname = g_strdup ("no description available");
+ }
+ details->description = details->longname;
+ val = slv2_plugin_get_author_name (lv2plugin);
+ if (val) {
+ details->author = g_strdup (slv2_value_as_string (val));
+ slv2_value_free (val);
+ } else {
+ details->author = g_strdup ("no author available");
+ }
+
+ if (gsp_class->num_audio_in == 0)
+ klass_tags = "Source/Audio/LV2";
+ else if (gsp_class->num_audio_out == 0) {
+ if (gsp_class->num_control_out == 0)
+ klass_tags = "Sink/Audio/LV2";
+ else
+ klass_tags = "Sink/Analyzer/Audio/LV2";
+ } else
+ klass_tags = "Filter/Effect/Audio/LV2";
+
+ details->klass = klass_tags;
+ GST_INFO ("tags : %s", details->klass);
+ gst_element_class_set_details (element_class, details);
+ g_free (details->longname);
+ g_free (details->author);
+ g_free (details);
+
+ klass->audio_in_portnums = g_new0 (gint, gsp_class->num_audio_in);
+ klass->audio_out_portnums = g_new0 (gint, gsp_class->num_audio_out);
+ klass->control_in_portnums = g_new0 (gint, gsp_class->num_control_in);
+ klass->control_out_portnums = g_new0 (gint, gsp_class->num_control_out);
+
+ audio_in_count = audio_out_count = control_in_count = control_out_count = 0;
+
+ for (j = 0; j < slv2_plugin_get_num_ports (lv2plugin); j++) {
+ SLV2Port port = slv2_plugin_get_port_by_index (lv2plugin, j);
+ gboolean is_input = slv2_port_is_a (lv2plugin, port, input_class);
+ if (slv2_port_is_a (lv2plugin, port, audio_class)) {
+ if (is_input)
+ klass->audio_in_portnums[audio_in_count++] = j;
+ else
+ klass->audio_out_portnums[audio_out_count++] = j;
+ } else if (slv2_port_is_a (lv2plugin, port, control_class)) {
+ if (is_input)
+ klass->control_in_portnums[control_in_count++] = j;
+ else
+ klass->control_out_portnums[control_out_count++] = j;
+ }
+ }
+
+ g_assert (audio_in_count == gsp_class->num_audio_in);
+ g_assert (audio_out_count == gsp_class->num_audio_out);
+ g_assert (control_in_count == gsp_class->num_control_in);
+ g_assert (control_out_count == gsp_class->num_control_out);
+
+ /*if (!LV2_IS_INPLACE_BROKEN (desc->Properties))
+ GST_SIGNAL_PROCESSOR_CLASS_SET_CAN_PROCESS_IN_PLACE (klass); */
+
+ klass->plugin = lv2plugin;
+}
+
+static gchar *
+gst_lv2_class_get_param_name (GstLV2Class * klass, gint portnum)
+{
+ SLV2Plugin lv2plugin = klass->plugin;
+ SLV2Port port = slv2_plugin_get_port_by_index (lv2plugin, portnum);
+ return g_strdup (slv2_value_as_string (slv2_port_get_symbol (lv2plugin,
+ port)));
+}
+
+static GParamSpec *
+gst_lv2_class_get_param_spec (GstLV2Class * klass, gint portnum)
+{
+ SLV2Plugin lv2plugin = klass->plugin;
+ SLV2Port port = slv2_plugin_get_port_by_index (lv2plugin, portnum);
+ SLV2Value lv2def, lv2min, lv2max;
+ GParamSpec *ret;
+ gchar *name;
+ gint perms;
+ gfloat lower = 0.0f, upper = 1.0f, def = 0.0f;
+
+ name = gst_lv2_class_get_param_name (klass, portnum);
+ perms = G_PARAM_READABLE;
+ if (slv2_port_is_a (lv2plugin, port, input_class))
+ perms |= G_PARAM_WRITABLE | G_PARAM_CONSTRUCT;
+ if (slv2_port_is_a (lv2plugin, port, control_class))
+ perms |= GST_PARAM_CONTROLLABLE;
+
+ if (slv2_port_has_property (lv2plugin, port, toggled_prop)) {
+ ret = g_param_spec_boolean (name, name, name, FALSE, perms);
+ g_free (name);
+ return ret;
+ }
+
+ slv2_port_get_range (lv2plugin, port, &lv2def, &lv2min, &lv2max);
+
+ if (lv2def)
+ def = slv2_value_as_float (lv2def);
+ if (lv2min)
+ lower = slv2_value_as_float (lv2min);
+ if (lv2max)
+ upper = slv2_value_as_float (lv2max);
+
+ if (def < lower) {
+ fprintf (stderr, "ERROR: %s BAD LOWER %f > %f\n",
+ slv2_value_as_string (slv2_plugin_get_uri (lv2plugin)), lower, def);
+ lower = def;
+ }
+
+ if (def > upper) {
+ fprintf (stderr, "ERROR: %s BAD UPPER %f < %f\n",
+ slv2_value_as_string (slv2_plugin_get_uri (lv2plugin)), upper, def);
+ upper = def;
+ }
+
+ if (slv2_port_has_property (lv2plugin, port, integer_prop))
+ ret = g_param_spec_int (name, name, name, lower, upper, def, perms);
+ else
+ ret = g_param_spec_float (name, name, name, lower, upper, def, perms);
+
+ g_free (name);
+
+ return ret;
+}
+
+static void
+gst_lv2_class_init (GstLV2Class * klass, SLV2Plugin lv2plugin)
+{
+ GObjectClass *gobject_class;
+ GstSignalProcessorClass *gsp_class;
+ gint i;
+
+ GST_DEBUG ("class_init %p", klass);
+
+ gobject_class = (GObjectClass *) klass;
+ gobject_class->set_property = gst_lv2_set_property;
+ gobject_class->get_property = gst_lv2_get_property;
+
+ gsp_class = GST_SIGNAL_PROCESSOR_CLASS (klass);
+ gsp_class->setup = gst_lv2_setup;
+ gsp_class->start = gst_lv2_start;
+ gsp_class->stop = gst_lv2_stop;
+ gsp_class->cleanup = gst_lv2_cleanup;
+ gsp_class->process = gst_lv2_process;
+
+ klass->plugin = lv2plugin;
+
+ /* register properties */
+
+ for (i = 0; i < gsp_class->num_control_in; i++) {
+ GParamSpec *p;
+
+ p = gst_lv2_class_get_param_spec (klass, klass->control_in_portnums[i]);
+
+ /* properties have an offset of 1 */
+ g_object_class_install_property (G_OBJECT_CLASS (klass), i + 1, p);
+ }
+
+ for (i = 0; i < gsp_class->num_control_out; i++) {
+ GParamSpec *p;
+
+ p = gst_lv2_class_get_param_spec (klass, klass->control_out_portnums[i]);
+
+ /* properties have an offset of 1, and we already added num_control_in */
+ g_object_class_install_property (G_OBJECT_CLASS (klass),
+ gsp_class->num_control_in + i + 1, p);
+ }
+}
+
+static void
+gst_lv2_init (GstLV2 * lv2, GstLV2Class * klass)
+{
+#if 0
+ lv2->plugin = klass->plugin;
+ lv2->instance = NULL;
+ lv2->activated = FALSE;
+ lv2->inplace_broken = LV2_IS_INPLACE_BROKEN (lv2->descriptor->Properties);
+#endif
+}
+
+static void
+gst_lv2_set_property (GObject * object, guint prop_id, const GValue * value,
+ GParamSpec * pspec)
+{
+#if 0
+ GstSignalProcessor *gsp;
+ GstSignalProcessorClass *gsp_class;
+
+ gsp = GST_SIGNAL_PROCESSOR (object);
+ gsp_class = GST_SIGNAL_PROCESSOR_GET_CLASS (object);
+
+ /* remember, properties have an offset of 1 */
+ prop_id--;
+
+ /* only input ports */
+ g_return_if_fail (prop_id < gsp_class->num_control_in);
+
+ /* now see what type it is */
+ switch (pspec->value_type) {
+ case G_TYPE_BOOLEAN:
+ gsp->control_in[prop_id] = g_value_get_boolean (value) ? 1.f : 0.f;
+ break;
+ case G_TYPE_INT:
+ gsp->control_in[prop_id] = g_value_get_int (value);
+ break;
+ case G_TYPE_FLOAT:
+ gsp->control_in[prop_id] = g_value_get_float (value);
+ break;
+ default:
+ g_assert_not_reached ();
+ }
+#endif
+}
+
+static void
+gst_lv2_get_property (GObject * object, guint prop_id, GValue * value,
+ GParamSpec * pspec)
+{
+#if 0
+ GstSignalProcessor *gsp;
+ GstSignalProcessorClass *gsp_class;
+ gfloat *controls;
+
+ gsp = GST_SIGNAL_PROCESSOR (object);
+ gsp_class = GST_SIGNAL_PROCESSOR_GET_CLASS (object);
+
+ /* remember, properties have an offset of 1 */
+ prop_id--;
+
+ if (prop_id < gsp_class->num_control_in) {
+ controls = gsp->control_in;
+ } else if (prop_id < gsp_class->num_control_in + gsp_class->num_control_out) {
+ controls = gsp->control_out;
+ prop_id -= gsp_class->num_control_in;
+ } else {
+ g_return_if_reached ();
+ }
+
+ /* now see what type it is */
+ switch (pspec->value_type) {
+ case G_TYPE_BOOLEAN:
+ g_value_set_boolean (value, controls[prop_id] > 0.5);
+ break;
+ case G_TYPE_INT:
+ g_value_set_int (value, CLAMP (controls[prop_id], G_MININT, G_MAXINT));
+ break;
+ case G_TYPE_FLOAT:
+ g_value_set_float (value, controls[prop_id]);
+ break;
+ default:
+ g_return_if_reached ();
+ }
+#endif
+}
+
+static gboolean
+gst_lv2_setup (GstSignalProcessor * gsp, guint sample_rate)
+{
+#if 0
+ GstLV2 *ladspa;
+ GstLV2Class *oclass;
+ GstSignalProcessorClass *gsp_class;
+ LV2_Descriptor *desc;
+ int i;
+
+ gsp_class = GST_SIGNAL_PROCESSOR_GET_CLASS (gsp);
+ ladspa = (GstLV2 *) gsp;
+ oclass = (GstLV2Class *) gsp_class;
+ desc = ladspa->descriptor;
+
+ g_return_val_if_fail (ladspa->handle == NULL, FALSE);
+ g_return_val_if_fail (ladspa->activated == FALSE, FALSE);
+
+ GST_DEBUG_OBJECT (ladspa, "instantiating the plugin at %d Hz", sample_rate);
+
+ ladspa->handle = desc->instantiate (desc, sample_rate);
+
+ g_return_val_if_fail (ladspa->handle != NULL, FALSE);
+
+ /* connect the control ports */
+ for (i = 0; i < gsp_class->num_control_in; i++)
+ desc->connect_port (ladspa->handle,
+ oclass->control_in_portnums[i], &(gsp->control_in[i]));
+ for (i = 0; i < gsp_class->num_control_out; i++)
+ desc->connect_port (ladspa->handle,
+ oclass->control_out_portnums[i], &(gsp->control_out[i]));
+#endif
+ return TRUE;
+}
+
+static gboolean
+gst_lv2_start (GstSignalProcessor * gsp)
+{
+#if 0
+ GstLV2 *ladspa;
+ LV2_Descriptor *desc;
+
+ ladspa = (GstLV2 *) gsp;
+ desc = ladspa->descriptor;
+
+ g_return_val_if_fail (ladspa->activated == FALSE, FALSE);
+ g_return_val_if_fail (ladspa->handle != NULL, FALSE);
+
+ GST_DEBUG_OBJECT (ladspa, "activating");
+
+ if (desc->activate)
+ desc->activate (ladspa->handle);
+
+ ladspa->activated = TRUE;
+#endif
+
+ return TRUE;
+}
+
+static void
+gst_lv2_stop (GstSignalProcessor * gsp)
+{
+#if 0
+ GstLV2 *ladspa;
+ LV2_Descriptor *desc;
+
+ ladspa = (GstLV2 *) gsp;
+ desc = ladspa->descriptor;
+
+ g_return_if_fail (ladspa->activated == TRUE);
+ g_return_if_fail (ladspa->handle != NULL);
+
+ GST_DEBUG_OBJECT (ladspa, "deactivating");
+
+ if (desc->activate)
+ desc->activate (ladspa->handle);
+
+ ladspa->activated = FALSE;
+#endif
+}
+
+static void
+gst_lv2_cleanup (GstSignalProcessor * gsp)
+{
+#if 0
+ GstLV2 *ladspa;
+ LV2_Descriptor *desc;
+
+ ladspa = (GstLV2 *) gsp;
+ desc = ladspa->descriptor;
+
+ g_return_if_fail (ladspa->activated == FALSE);
+ g_return_if_fail (ladspa->handle != NULL);
+
+ GST_DEBUG_OBJECT (ladspa, "cleaning up");
+
+ if (desc->cleanup)
+ desc->cleanup (ladspa->handle);
+
+ ladspa->handle = NULL;
+#endif
+}
+
+static void
+gst_lv2_process (GstSignalProcessor * gsp, guint nframes)
+{
+#if 0
+ GstSignalProcessorClass *gsp_class;
+ GstLV2 *ladspa;
+ GstLV2Class *oclass;
+ LV2_Descriptor *desc;
+ guint i;
+
+ gsp_class = GST_SIGNAL_PROCESSOR_GET_CLASS (gsp);
+ ladspa = (GstLV2 *) gsp;
+ oclass = (GstLV2Class *) gsp_class;
+ desc = ladspa->descriptor;
+
+ for (i = 0; i < gsp_class->num_audio_in; i++)
+ desc->connect_port (ladspa->handle, oclass->audio_in_portnums[i],
+ gsp->audio_in[i]);
+ for (i = 0; i < gsp_class->num_audio_out; i++)
+ desc->connect_port (ladspa->handle, oclass->audio_out_portnums[i],
+ gsp->audio_out[i]);
+
+ desc->run (ladspa->handle, nframes);
+#endif
+}
+
+/* search the plugin path
+ */
+static gboolean
+lv2_plugin_discover (void)
+{
+ unsigned i;
+ SLV2Plugins plugins = slv2_world_get_all_plugins (world);
+ for (i = 0; i < slv2_plugins_size (plugins); ++i) {
+ SLV2Plugin lv2plugin = slv2_plugins_get_at (plugins, i);
+ GTypeInfo typeinfo = {
+ sizeof (GstLV2Class),
+ (GBaseInitFunc) gst_lv2_base_init,
+ NULL,
+ (GClassInitFunc) gst_lv2_class_init,
+ NULL,
+ lv2plugin,
+ sizeof (GstLV2),
+ 0,
+ (GInstanceInitFunc) gst_lv2_init,
+ };
+
+ GType type;
+
+ /* construct the type name from plugin URI */
+ gchar *type_name = g_strdup_printf ("%s",
+ slv2_value_as_uri (slv2_plugin_get_uri (lv2plugin)));
+ g_strcanon (type_name, G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-+", '-');
+
+ /* if it's already registered, drop it */
+ if (g_type_from_name (type_name))
+ goto next;
+
+ /* create the type */
+ type =
+ g_type_register_static (GST_TYPE_SIGNAL_PROCESSOR, type_name, &typeinfo,
+ 0);
+
+ /* FIXME: not needed anymore when we can add pad templates, etc in class_init
+ * as class_data contains the LADSPA_Descriptor too */
+ g_type_set_qdata (type, GST_SLV2_PLUGIN_QDATA, (gpointer) lv2plugin);
+
+ if (!gst_element_register (gst_lv2_plugin, type_name, GST_RANK_NONE, type))
+ goto next;
+
+ next:
+ g_free (type_name);
+ }
+ return TRUE;
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ GST_DEBUG_CATEGORY_INIT (lv2_debug, "lv2",
+ GST_DEBUG_FG_GREEN | GST_DEBUG_BG_BLACK | GST_DEBUG_BOLD, "LV2");
+
+ world = slv2_world_new ();
+ slv2_world_load_all (world);
+
+ audio_class = slv2_value_new_uri (world, SLV2_PORT_CLASS_AUDIO);
+ control_class = slv2_value_new_uri (world, SLV2_PORT_CLASS_CONTROL);
+ input_class = slv2_value_new_uri (world, SLV2_PORT_CLASS_INPUT);
+ output_class = slv2_value_new_uri (world, SLV2_PORT_CLASS_OUTPUT);
+ integer_prop =
+ slv2_value_new_uri (world, "http://lv2plug.in/ns/lv2core#integer");
+ toggled_prop =
+ slv2_value_new_uri (world, "http://lv2plug.in/ns/lv2core#toggled");
+
+ parent_class = g_type_class_ref (GST_TYPE_SIGNAL_PROCESSOR);
+
+ gst_lv2_plugin = plugin;
+
+ return lv2_plugin_discover ();
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "lv2",
+ "All LV2 plugins",
+ plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-07 00:03:33 +0000