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/* GStreamer LADSPA utils
* Copyright (C) 1999 Erik Walthinsen <omega@cse.ogi.edu>
* 2001 Steve Baker <stevebaker_org@yahoo.co.uk>
* 2003 Andy Wingo <wingo at pobox.com>
* 2013 Juan Manuel Borges Caño <juanmabcmail@gmail.com>
* 2013 Stefan Sauer <ensonic@users.sf.net>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/*
* This module is smartly shared between the source, transform and
* sink elements. Handling any specific LADSPA <-> gstreamer interaction.
*
* FIXME:
* Assigning channel orders could be tricky since LADSPA seems to not
* specify order of channels in a really nice computer parseable way,
* stereo is probably wrong, more than stereo is crazy. LADSPA has
* no channel order. All that could be done is to parse the port names
* for "(Left)/(Right)", "-L/-R" or ":l/:r" - these are the 3 patterns
* seen most of the time. By now, it just let's them pass in / pass out.
* Some nice effort might be done to set channel-masks and/or channel
* positions correctly, if this is needed and expected, users will tell.
*
* This affects mainly interleaving, right now, it just interleaves all
* input and output ports. This is the right thing in 90% of the cases,
* but will e.g. create a 4 channel out for a plugin that has 2 stereo
* 'pairs'.
*
* Also, gstreamer supports not-interleaved audio, where you just memcpy
* each channel after each other: c1...c1c2....c2 and so on. This is not
* taken into account, but could be added to the _transform and caps easily
* if users demands it.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstladspa.h"
#include "gstladspautils.h"
#include "gstladspafilter.h"
#include "gstladspasource.h"
#include "gstladspasink.h"
#include <math.h>
#ifdef HAVE_LRDF
#include <lrdf.h>
#endif
GST_DEBUG_CATEGORY_EXTERN (ladspa_debug);
#define GST_CAT_DEFAULT ladspa_debug
/*
* Interleaved buffer: (c1c2c1c2...)
* De-interleaved buffer: (c1c1...c2c2...)
*/
static inline void
gst_ladspa_ladspa_deinterleave_data (GstLADSPA * ladspa, LADSPA_Data * outdata,
guint samples, guint8 * indata)
{
guint i, j;
const guint audio_in = ladspa->klass->count.audio.in;
for (i = 0; i < audio_in; i++)
for (j = 0; j < samples; j++)
outdata[i * samples + j] = ((LADSPA_Data *) indata)[j * audio_in + i];
}
/*
* Interleaved buffer: (c1c2c1c2...)
* De-interleaved buffer: (c1c1...c2c2...)
*/
static inline void
gst_ladspa_interleave_ladspa_data (GstLADSPA * ladspa, guint8 * outdata,
guint samples, LADSPA_Data * indata)
{
guint i, j;
const guint audio_out = ladspa->klass->count.audio.out;
for (i = 0; i < audio_out; i++)
for (j = 0; j < samples; j++)
((LADSPA_Data *) outdata)[j * audio_out + i] = indata[i * samples + j];
}
/*
* Connect the audio in ports.
*/
static inline void
gst_ladspa_connect_audio_in (GstLADSPA * ladspa, guint samples,
LADSPA_Data * data)
{
guint i;
for (i = 0; i < ladspa->klass->count.audio.in; i++) {
ladspa->ports.audio.in[i] = data + (i * samples);
ladspa->klass->descriptor->connect_port (ladspa->handle,
ladspa->klass->map.audio.in[i], ladspa->ports.audio.in[i]);
}
}
/*
* Connect the audio out ports.
*/
static inline void
gst_ladspa_connect_audio_out (GstLADSPA * ladspa, guint samples,
LADSPA_Data * data)
{
guint i;
for (i = 0; i < ladspa->klass->count.audio.out; i++) {
ladspa->ports.audio.out[i] = data + (i * samples);
ladspa->klass->descriptor->connect_port (ladspa->handle,
ladspa->klass->map.audio.out[i], ladspa->ports.audio.out[i]);
}
}
/*
* Process a block of audio with the ladspa plugin.
*/
static inline void
gst_ladspa_run (GstLADSPA * ladspa, guint nframes)
{
ladspa->klass->descriptor->run (ladspa->handle, nframes);
}
/*
* The data entry/exit point.
*/
gboolean
gst_ladspa_transform (GstLADSPA * ladspa, guint8 * outdata, guint samples,
guint8 * indata)
{
LADSPA_Data *in, *out;
in = g_new0 (LADSPA_Data, samples * ladspa->klass->count.audio.in);
out = g_new0 (LADSPA_Data, samples * ladspa->klass->count.audio.out);
gst_ladspa_ladspa_deinterleave_data (ladspa, in, samples, indata);
gst_ladspa_connect_audio_in (ladspa, samples, in);
gst_ladspa_connect_audio_out (ladspa, samples, out);
gst_ladspa_run (ladspa, samples);
gst_ladspa_interleave_ladspa_data (ladspa, outdata, samples, out);
g_free (out);
g_free (in);
return TRUE;
}
static gboolean
gst_ladspa_activate (GstLADSPA * ladspa)
{
g_return_val_if_fail (ladspa->handle != NULL, FALSE);
g_return_val_if_fail (ladspa->activated == FALSE, FALSE);
GST_DEBUG ("activating LADSPA plugin");
if (ladspa->klass->descriptor->activate)
ladspa->klass->descriptor->activate (ladspa->handle);
ladspa->activated = TRUE;
return TRUE;
}
static gboolean
gst_ladspa_deactivate (GstLADSPA * ladspa)
{
g_return_val_if_fail (ladspa->handle != NULL, FALSE);
g_return_val_if_fail (ladspa->activated == TRUE, FALSE);
GST_DEBUG ("LADSPA deactivating plugin");
if (ladspa->klass->descriptor->deactivate)
ladspa->klass->descriptor->deactivate (ladspa->handle);
ladspa->activated = FALSE;
return TRUE;
}
static gboolean
gst_ladspa_open (GstLADSPA * ladspa, unsigned long rate)
{
guint i;
GST_DEBUG ("LADSPA instantiating plugin at %lu Hz", rate);
if (!(ladspa->handle =
ladspa->klass->descriptor->instantiate (ladspa->klass->descriptor,
rate))) {
GST_WARNING ("could not instantiate LADSPA plugin");
return FALSE;
}
ladspa->rate = rate;
/* connect the control ports */
for (i = 0; i < ladspa->klass->count.control.in; i++)
ladspa->klass->descriptor->connect_port (ladspa->handle,
ladspa->klass->map.control.in[i], &(ladspa->ports.control.in[i]));
for (i = 0; i < ladspa->klass->count.control.out; i++)
ladspa->klass->descriptor->connect_port (ladspa->handle,
ladspa->klass->map.control.out[i], &(ladspa->ports.control.out[i]));
return TRUE;
}
static void
gst_ladspa_close (GstLADSPA * ladspa)
{
g_return_if_fail (ladspa->handle != NULL);
g_return_if_fail (ladspa->activated == FALSE);
GST_DEBUG ("LADSPA deinstantiating plugin");
if (ladspa->klass->descriptor->cleanup)
ladspa->klass->descriptor->cleanup (ladspa->handle);
ladspa->rate = 0;
ladspa->handle = NULL;
}
/*
* Safe open.
*/
gboolean
gst_ladspa_setup (GstLADSPA * ladspa, unsigned long rate)
{
gboolean ret = TRUE;
GST_DEBUG ("LADSPA setting up plugin");
if (ladspa->handle && ladspa->rate != rate) {
if (ladspa->activated)
gst_ladspa_deactivate (ladspa);
gst_ladspa_close (ladspa);
}
if (!ladspa->handle) {
gst_ladspa_open (ladspa, rate);
if (!(ret = gst_ladspa_activate (ladspa)))
gst_ladspa_close (ladspa);
}
return ret;
}
/*
* Safe close.
*/
gboolean
gst_ladspa_cleanup (GstLADSPA * ladspa)
{
gboolean ret = TRUE;
GST_DEBUG ("LADSPA cleaning up plugin");
if (ladspa->handle) {
if (ladspa->activated)
ret = gst_ladspa_deactivate (ladspa);
gst_ladspa_close (ladspa);
}
return ret;
}
static gchar *
gst_ladspa_object_class_get_param_name (GstLADSPAClass * ladspa_class,
GObjectClass * object_class, unsigned long portnum)
{
const LADSPA_Descriptor *desc = ladspa_class->descriptor;
gchar *name, **namev, **v, *tmp;
guint i;
/* beauty in the mess */
name = g_strdup ("");
namev = g_strsplit_set (desc->PortNames[portnum], "[]()", 0);
for (i = 0, v = namev; *v; i++, v++) {
if (!(i % 2)) {
tmp = name;
name = g_strconcat (name, *v, NULL);
g_free (tmp);
}
}
g_strfreev (namev);
g_strstrip (name);
tmp = name;
name = g_ascii_strdown (name, -1);
g_free (tmp);
/* this is the same thing that param_spec_* will do */
g_strcanon (name, G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-", '-');
/* satisfy glib2 (argname[0] must be [A-Za-z]) */
if (!((name[0] >= 'a' && name[0] <= 'z') || (name[0] >= 'A'
&& name[0] <= 'Z'))) {
tmp = name;
name = g_strconcat ("param-", name, NULL);
g_free (tmp);
}
/* check for duplicate property names */
if (g_object_class_find_property (G_OBJECT_CLASS (object_class), name)) {
gint n = 1;
gchar *nprop = g_strdup_printf ("%s-%d", name, n++);
while (g_object_class_find_property (G_OBJECT_CLASS (object_class), nprop)) {
g_free (nprop);
nprop = g_strdup_printf ("%s-%d", name, n++);
}
g_free (name);
name = nprop;
}
GST_DEBUG ("LADSPA built property name '%s' from port name '%s'", name,
desc->PortNames[portnum]);
return name;
}
static GParamSpec *
gst_ladspa_object_class_get_param_spec (GstLADSPAClass * ladspa_class,
GObjectClass * object_class, unsigned long portnum)
{
const LADSPA_Descriptor *desc = ladspa_class->descriptor;
GParamSpec *ret;
gchar *name;
gint hintdesc, perms;
gfloat lower, upper, def;
name =
gst_ladspa_object_class_get_param_name (ladspa_class, object_class,
portnum);
perms = G_PARAM_READABLE;
if (LADSPA_IS_PORT_INPUT (desc->PortDescriptors[portnum]))
perms |= G_PARAM_WRITABLE | G_PARAM_CONSTRUCT;
if (LADSPA_IS_PORT_CONTROL (desc->PortDescriptors[portnum]))
perms |= GST_PARAM_CONTROLLABLE;
/* short name for hint descriptor */
hintdesc = desc->PortRangeHints[portnum].HintDescriptor;
if (LADSPA_IS_HINT_TOGGLED (hintdesc)) {
ret =
g_param_spec_boolean (name, name, desc->PortNames[portnum], FALSE,
perms);
g_free (name);
return ret;
}
if (LADSPA_IS_HINT_BOUNDED_BELOW (hintdesc))
lower = desc->PortRangeHints[portnum].LowerBound;
else
lower = -G_MAXFLOAT;
if (LADSPA_IS_HINT_BOUNDED_ABOVE (hintdesc))
upper = desc->PortRangeHints[portnum].UpperBound;
else
upper = G_MAXFLOAT;
if (LADSPA_IS_HINT_SAMPLE_RATE (hintdesc)) {
/* FIXME:! (*= ladspa->rate?, *= GST_AUDIO_DEF_RATE?) */
lower *= 44100;
upper *= 44100;
}
if (LADSPA_IS_HINT_INTEGER (hintdesc)) {
lower = CLAMP (lower, G_MININT, G_MAXINT);
upper = CLAMP (upper, G_MININT, G_MAXINT);
}
/* default to lower bound */
def = lower;
#ifdef LADSPA_IS_HINT_HAS_DEFAULT
if (LADSPA_IS_HINT_HAS_DEFAULT (hintdesc)) {
if (LADSPA_IS_HINT_DEFAULT_0 (hintdesc))
def = 0.0;
else if (LADSPA_IS_HINT_DEFAULT_1 (hintdesc))
def = 1.0;
else if (LADSPA_IS_HINT_DEFAULT_100 (hintdesc))
def = 100.0;
else if (LADSPA_IS_HINT_DEFAULT_440 (hintdesc))
def = 440.0;
if (LADSPA_IS_HINT_DEFAULT_MINIMUM (hintdesc))
def = lower;
else if (LADSPA_IS_HINT_DEFAULT_MAXIMUM (hintdesc))
def = upper;
else if (LADSPA_IS_HINT_LOGARITHMIC (hintdesc)) {
if (LADSPA_IS_HINT_DEFAULT_LOW (hintdesc))
def = exp (0.75 * log (lower) + 0.25 * log (upper));
else if (LADSPA_IS_HINT_DEFAULT_MIDDLE (hintdesc))
def = exp (0.5 * log (lower) + 0.5 * log (upper));
else if (LADSPA_IS_HINT_DEFAULT_HIGH (hintdesc))
def = exp (0.25 * log (lower) + 0.75 * log (upper));
} else {
if (LADSPA_IS_HINT_DEFAULT_LOW (hintdesc))
def = 0.75 * lower + 0.25 * upper;
else if (LADSPA_IS_HINT_DEFAULT_MIDDLE (hintdesc))
def = 0.5 * lower + 0.5 * upper;
else if (LADSPA_IS_HINT_DEFAULT_HIGH (hintdesc))
def = 0.25 * lower + 0.75 * upper;
}
}
#endif /* LADSPA_IS_HINT_HAS_DEFAULT */
if (lower > upper) {
gfloat tmp;
/* silently swap */
tmp = lower;
lower = upper;
upper = tmp;
}
def = CLAMP (def, lower, upper);
if (LADSPA_IS_HINT_INTEGER (hintdesc)) {
ret =
g_param_spec_int (name, name, desc->PortNames[portnum], lower, upper,
def, perms);
} else {
ret =
g_param_spec_float (name, name, desc->PortNames[portnum], lower, upper,
def, perms);
}
g_free (name);
return ret;
}
void
gst_ladspa_object_set_property (GstLADSPA * ladspa, GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
/* remember, properties have an offset */
prop_id -= ladspa->klass->properties;
/* only input ports */
g_return_if_fail (prop_id < ladspa->klass->count.control.in);
/* now see what type it is */
switch (pspec->value_type) {
case G_TYPE_BOOLEAN:
ladspa->ports.control.in[prop_id] =
g_value_get_boolean (value) ? 1.f : 0.f;
break;
case G_TYPE_INT:
ladspa->ports.control.in[prop_id] = g_value_get_int (value);
break;
case G_TYPE_FLOAT:
ladspa->ports.control.in[prop_id] = g_value_get_float (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
void
gst_ladspa_object_get_property (GstLADSPA * ladspa, GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
LADSPA_Data *controls;
/* remember, properties have an offset */
prop_id -= ladspa->klass->properties;
if (prop_id < ladspa->klass->count.control.in) {
controls = ladspa->ports.control.in;
} else if (prop_id <
ladspa->klass->count.control.in + ladspa->klass->count.control.out) {
controls = ladspa->ports.control.out;
prop_id -= ladspa->klass->count.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_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
void
gst_ladspa_object_class_install_properties (GstLADSPAClass * ladspa_class,
GObjectClass * object_class, guint offset)
{
GParamSpec *p;
gint i;
ladspa_class->properties = offset;
/* register properties */
for (i = 0; i < ladspa_class->count.control.in; i++, offset++) {
p = gst_ladspa_object_class_get_param_spec (ladspa_class, object_class,
ladspa_class->map.control.in[i]);
g_object_class_install_property (object_class, offset, p);
}
for (i = 0; i < ladspa_class->count.control.out; i++, offset++) {
p = gst_ladspa_object_class_get_param_spec (ladspa_class, object_class,
ladspa_class->map.control.out[i]);
g_object_class_install_property (object_class, offset, p);
}
}
void
gst_ladspa_element_class_set_metadata (GstLADSPAClass * ladspa_class,
GstElementClass * elem_class, const gchar * ladspa_class_tags)
{
const LADSPA_Descriptor *desc = ladspa_class->descriptor;
gchar *longname, *author, *extra_ladspa_class_tags = NULL, *tmp;
#ifdef HAVE_LRDF
gchar *uri;
#endif
longname = g_locale_to_utf8 (desc->Name, -1, NULL, NULL, NULL);
if (!longname)
longname = g_strdup ("no LADSPA description available");
/* FIXME: no plugin author field different from element author field */
tmp = g_locale_to_utf8 (desc->Maker, -1, NULL, NULL, NULL);
if (!tmp)
tmp = g_strdup ("no LADSPA author available");
author =
g_strjoin (", ", tmp,
"Juan Manuel Borges Caño <juanmabcmail@gmail.com>",
"Andy Wingo <wingo at pobox.com>",
"Steve Baker <stevebaker_org@yahoo.co.uk>",
"Erik Walthinsen <omega@cse.ogi.edu>",
"Stefan Sauer <ensonic@users.sf.net>",
"Wim Taymans <wim@fluendo.com>", NULL);
g_free (tmp);
#ifdef HAVE_LRDF
/* libldrf support, we want to get extra klass information here */
uri = g_strdup_printf (LADSPA_BASE "%ld", desc->UniqueID);
if (uri) {
lrdf_statement query = { 0, };
lrdf_uris *uris;
gchar *str, *base_type = NULL;
GST_DEBUG ("LADSPA uri (id=%lu) : %s", desc->UniqueID, uri);
/* we can take this directly from 'desc', keep this example for future
attributes.
if ((str = lrdf_get_setting_metadata (uri, "title"))) {
GST_DEBUG ("LADSPA title : %s", str);
}
if ((str = lrdf_get_setting_metadata (uri, "creator"))) {
GST_DEBUG ("LADSPA creator : %s", str);
}
*/
/* get the rdf:type for this plugin */
query.subject = uri;
query.predicate = (char *) RDF_BASE "type";
query.object = (char *) "?";
query.next = NULL;
uris = lrdf_match_multi (&query);
if (uris) {
if (uris->count == 1) {
base_type = g_strdup (uris->items[0]);
GST_DEBUG ("LADSPA base_type : %s", base_type);
}
lrdf_free_uris (uris);
}
/* query taxonomy */
if (base_type) {
uris = lrdf_get_all_superclasses (base_type);
if (uris) {
guint32 j;
for (j = 0; j < uris->count; j++) {
if ((str = lrdf_get_label (uris->items[j]))) {
GST_DEBUG ("LADSPA parent_type_label : %s", str);
if (extra_ladspa_class_tags) {
gchar *old_tags = extra_ladspa_class_tags;
extra_ladspa_class_tags =
g_strconcat (extra_ladspa_class_tags, "/", str, NULL);
g_free (old_tags);
} else {
extra_ladspa_class_tags = g_strconcat ("/", str, NULL);
}
}
}
lrdf_free_uris (uris);
}
g_free (base_type);
}
/* we can use this for the presets
uris = lrdf_get_setting_uris (desc->UniqueID);
if (uris) {
guint32 j;
for (j = 0; j < uris->count; j++) {
GST_INFO ("setting_uri : %s", uris->items[j]);
if ((str = lrdf_get_label (uris->items[j]))) {
GST_INFO ("setting_label : %s", str);
}
}
lrdf_free_uris (uris);
}
*/
}
g_free (uri);
if (extra_ladspa_class_tags) {
char *s = g_strconcat (ladspa_class_tags, extra_ladspa_class_tags, NULL);
g_free (extra_ladspa_class_tags);
extra_ladspa_class_tags = s;
}
#endif
GST_INFO ("tags : %s", ladspa_class_tags);
gst_element_class_set_metadata (elem_class, longname,
extra_ladspa_class_tags ? extra_ladspa_class_tags : ladspa_class_tags,
longname, author);
g_free (extra_ladspa_class_tags);
g_free (author);
g_free (longname);
}
void
gst_ladspa_filter_type_class_add_pad_templates (GstLADSPAClass *
ladspa_class, GstAudioFilterClass * audio_class)
{
GstCaps *srccaps, *sinkcaps;
srccaps = gst_caps_new_simple ("audio/x-raw",
"format", G_TYPE_STRING, GST_AUDIO_NE (F32),
"channels", G_TYPE_INT, ladspa_class->count.audio.out,
"rate", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"layout", G_TYPE_STRING, "interleaved", NULL);
sinkcaps = gst_caps_new_simple ("audio/x-raw",
"format", G_TYPE_STRING, GST_AUDIO_NE (F32),
"channels", G_TYPE_INT, ladspa_class->count.audio.in,
"rate", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"layout", G_TYPE_STRING, "interleaved", NULL);
gst_my_audio_filter_class_add_pad_templates (audio_class, srccaps, sinkcaps);
gst_caps_unref (sinkcaps);
gst_caps_unref (srccaps);
}
void
gst_ladspa_source_type_class_add_pad_template (GstLADSPAClass *
ladspa_class, GstBaseSrcClass * base_class)
{
GstCaps *srccaps;
srccaps = gst_caps_new_simple ("audio/x-raw",
"format", G_TYPE_STRING, GST_AUDIO_NE (F32),
"channels", G_TYPE_INT, ladspa_class->count.audio.out,
"rate", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"layout", G_TYPE_STRING, "interleaved", NULL);
gst_my_base_source_class_add_pad_template (base_class, srccaps);
gst_caps_unref (srccaps);
}
void
gst_ladspa_sink_type_class_add_pad_template (GstLADSPAClass * ladspa_class,
GstBaseSinkClass * base_class)
{
GstCaps *sinkcaps;
sinkcaps = gst_caps_new_simple ("audio/x-raw",
"format", G_TYPE_STRING, GST_AUDIO_NE (F32),
"channels", G_TYPE_INT, ladspa_class->count.audio.in,
"rate", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"layout", G_TYPE_STRING, "interleaved", NULL);
gst_my_base_sink_class_add_pad_template (base_class, sinkcaps);
gst_caps_unref (sinkcaps);
}
void
gst_ladspa_init (GstLADSPA * ladspa, GstLADSPAClass * ladspa_class)
{
GST_DEBUG ("LADSPA initializing component");
ladspa->klass = ladspa_class;
ladspa->handle = NULL;
ladspa->activated = FALSE;
ladspa->rate = 0;
ladspa->ports.audio.in = g_new0 (LADSPA_Data *, ladspa_class->count.audio.in);
ladspa->ports.audio.out =
g_new0 (LADSPA_Data *, ladspa_class->count.audio.out);
ladspa->ports.control.in =
g_new0 (LADSPA_Data, ladspa_class->count.control.in);
ladspa->ports.control.out =
g_new0 (LADSPA_Data, ladspa_class->count.control.out);
}
void
gst_ladspa_finalize (GstLADSPA * ladspa)
{
GST_DEBUG ("LADSPA finalizing component");
g_free (ladspa->ports.control.out);
ladspa->ports.control.out = NULL;
g_free (ladspa->ports.control.in);
ladspa->ports.control.in = NULL;
g_free (ladspa->ports.audio.out);
ladspa->ports.audio.out = NULL;
g_free (ladspa->ports.audio.in);
ladspa->ports.audio.in = NULL;
}
void
gst_ladspa_class_init (GstLADSPAClass * ladspa_class, GType type)
{
guint mapper, ix;
guint audio_in = 0, audio_out = 0, control_in = 0, control_out = 0;
const GValue *value =
gst_structure_get_value (ladspa_meta_all, g_type_name (type));
GstStructure *ladspa_meta = g_value_get_boxed (value);
const gchar *file_name;
LADSPA_Descriptor_Function descriptor_function;
GST_DEBUG ("LADSPA initializing class");
file_name = gst_structure_get_string (ladspa_meta, "plugin-filename");
ladspa_class->plugin =
g_module_open (file_name, G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
g_module_symbol (ladspa_class->plugin, "ladspa_descriptor",
(gpointer *) & descriptor_function);
gst_structure_get_uint (ladspa_meta, "element-ix", &ix);
ladspa_class->descriptor = descriptor_function (ix);
gst_structure_get_uint (ladspa_meta, "audio-in",
&ladspa_class->count.audio.in);
gst_structure_get_uint (ladspa_meta, "audio-out",
&ladspa_class->count.audio.out);
gst_structure_get_uint (ladspa_meta, "control-in",
&ladspa_class->count.control.in);
gst_structure_get_uint (ladspa_meta, "control-out",
&ladspa_class->count.control.out);
ladspa_class->properties = 1;
ladspa_class->map.audio.in =
g_new0 (unsigned long, ladspa_class->count.audio.in);
ladspa_class->map.audio.out =
g_new0 (unsigned long, ladspa_class->count.audio.out);
ladspa_class->map.control.in =
g_new0 (unsigned long, ladspa_class->count.control.in);
ladspa_class->map.control.out =
g_new0 (unsigned long, ladspa_class->count.control.out);
for (mapper = 0; mapper < ladspa_class->descriptor->PortCount; mapper++) {
LADSPA_PortDescriptor p = ladspa_class->descriptor->PortDescriptors[mapper];
if (LADSPA_IS_PORT_AUDIO (p)) {
if (LADSPA_IS_PORT_INPUT (p))
ladspa_class->map.audio.in[audio_in++] = mapper;
else
ladspa_class->map.audio.out[audio_out++] = mapper;
} else if (LADSPA_IS_PORT_CONTROL (p)) {
if (LADSPA_IS_PORT_INPUT (p))
ladspa_class->map.control.in[control_in++] = mapper;
else
ladspa_class->map.control.out[control_out++] = mapper;
}
}
g_assert (control_out == ladspa_class->count.control.out);
g_assert (control_in == ladspa_class->count.control.in);
g_assert (audio_out == ladspa_class->count.audio.out);
g_assert (audio_in == ladspa_class->count.audio.in);
}
void
gst_ladspa_class_finalize (GstLADSPAClass * ladspa_class)
{
GST_DEBUG ("LADSPA finalizing class");
g_free (ladspa_class->map.control.out);
ladspa_class->map.control.out = NULL;
g_free (ladspa_class->map.control.in);
ladspa_class->map.control.in = NULL;
g_free (ladspa_class->map.audio.out);
ladspa_class->map.audio.out = NULL;
g_free (ladspa_class->map.audio.in);
ladspa_class->map.audio.in = NULL;
g_module_close (ladspa_class->plugin);
ladspa_class->plugin = NULL;
}
/*
* Create the type & register the element.
*/
void
ladspa_register_element (GstPlugin * plugin, GType parent_type,
const GTypeInfo * info, GstStructure * ladspa_meta)
{
const gchar *type_name =
gst_structure_get_string (ladspa_meta, "element-type-name");
gst_element_register (plugin, type_name, GST_RANK_NONE,
g_type_register_static (parent_type, type_name, info, 0));
}