gstreamer/ext/ladspa/gstladspa.c

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/* 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 "gstladspa.h"
#include <ladspa.h> /* main ladspa sdk include file */
#include "utils.h" /* ladspa sdk utility functions */
/* 1.0 and the 1.1 preliminary headers don't define a version, but 1.1 final
does */
#ifndef LADSPA_VERSION
#define LADSPA_VERSION "1.0"
#endif
GST_BOILERPLATE (GstLADSPA, gst_ladspa, GstSignalProcessor,
GST_TYPE_SIGNAL_PROCESSOR);
static void gst_ladspa_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_ladspa_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_ladspa_setup (GstSignalProcessor * sigproc,
guint sample_rate);
static gboolean gst_ladspa_start (GstSignalProcessor * sigproc);
static void gst_ladspa_stop (GstSignalProcessor * sigproc);
static void gst_ladspa_cleanup (GstSignalProcessor * sigproc);
static void gst_ladspa_process (GstSignalProcessor * sigproc, guint nframes);
static GstPlugin *ladspa_plugin;
static GHashTable *ladspa_descriptors;
GST_DEBUG_CATEGORY_STATIC (ladspa_debug);
#define GST_CAT_DEFAULT ladspa_debug
static void
gst_ladspa_base_init (gpointer g_class)
{
GstLADSPAClass *klass = (GstLADSPAClass *) g_class;
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstSignalProcessorClass *gsp_class = GST_SIGNAL_PROCESSOR_CLASS (g_class);
GstElementDetails *details;
LADSPA_Descriptor *desc;
gint j, sinkcount, srccount;
GST_DEBUG ("base_init %p", g_class);
desc = g_hash_table_lookup (ladspa_descriptors,
GINT_TO_POINTER (G_TYPE_FROM_CLASS (klass)));
if (!desc)
desc = g_hash_table_lookup (ladspa_descriptors, GINT_TO_POINTER (0));
g_assert (desc);
klass->descriptor = desc;
g_assert (desc);
/* pad templates */
gsp_class->num_audio_in = 0;
gsp_class->num_audio_out = 0;
/* control gets set in the class init */
for (j = 0; j < desc->PortCount; j++) {
LADSPA_PortDescriptor p = desc->PortDescriptors[j];
if (LADSPA_IS_PORT_AUDIO (p)) {
gchar *name = g_strdup ((gchar *) desc->PortNames[j]);
g_strcanon (name, G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-", '-');
if (LADSPA_IS_PORT_INPUT (p))
gst_signal_processor_class_add_pad_template (gsp_class, name,
GST_PAD_SINK, gsp_class->num_audio_in++);
else
gst_signal_processor_class_add_pad_template (gsp_class, name,
GST_PAD_SRC, gsp_class->num_audio_out++);
}
}
/* construct the element details struct */
details = g_new0 (GstElementDetails, 1);
details->longname = g_locale_to_utf8 (desc->Name, -1, NULL, NULL, NULL);
if (!details->longname)
details->longname = g_strdup ("no description available");
details->description = details->longname;
details->author = g_locale_to_utf8 (desc->Maker, -1, NULL, NULL, NULL);
if (!details->author)
details->author = g_strdup ("no author available");
if (gsp_class->num_audio_in == 0)
details->klass = "Source/Audio/LADSPA";
else if (gsp_class->num_audio_out == 0)
details->klass = "Sink/Audio/LADSPA";
else
details->klass = "Filter/Effect/Audio/LADSPA";
gst_element_class_set_details (element_class, 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);
sinkcount = srccount = 0;
for (j = 0; j < desc->PortCount; j++) {
if (LADSPA_IS_PORT_AUDIO (desc->PortDescriptors[j])) {
if (LADSPA_IS_PORT_INPUT (desc->PortDescriptors[j]))
klass->audio_in_portnums[sinkcount++] = j;
else
klass->audio_out_portnums[srccount++] = j;
}
}
klass->descriptor = desc;
}
static gchar *
gst_ladspa_class_get_param_name (GstLADSPAClass * klass, gint portnum)
{
LADSPA_Descriptor *desc;
gchar *ret, *paren;
desc = klass->descriptor;
ret = g_strdup (desc->PortNames[portnum]);
paren = g_strrstr (ret, " (");
if (paren != NULL)
*paren = '\0';
/* this is the same thing that param_spec_* will do */
g_strcanon (ret, G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-", '-');
/* satisfy glib2 (argname[0] must be [A-Za-z]) */
if (!((ret[0] >= 'a' && ret[0] <= 'z') || (ret[0] >= 'A' && ret[0] <= 'Z'))) {
gchar *tempstr = ret;
ret = g_strconcat ("param-", ret, NULL);
g_free (tempstr);
}
/* check for duplicate property names */
if (g_object_class_find_property (G_OBJECT_CLASS (klass), ret)) {
gint n = 1;
gchar *nret = g_strdup_printf ("%s-%d", ret, n++);
while (g_object_class_find_property (G_OBJECT_CLASS (klass), nret)) {
g_free (nret);
nret = g_strdup_printf ("%s-%d", ret, n++);
}
ret = nret;
}
return ret;
}
static GParamSpec *
gst_ladspa_class_get_param_spec (GstLADSPAClass * klass, gint portnum)
{
LADSPA_Descriptor *desc;
GParamSpec *ret;
gchar *name;
gint hintdesc, perms;
gfloat lower, upper, def;
desc = klass->descriptor;
name = gst_ladspa_class_get_param_name (klass, portnum);
perms = G_PARAM_READABLE;
if (LADSPA_IS_PORT_INPUT (desc->PortDescriptors[portnum]))
perms |= G_PARAM_WRITABLE | G_PARAM_CONSTRUCT;
/* short name for hint descriptor */
hintdesc = desc->PortRangeHints[portnum].HintDescriptor;
if (LADSPA_IS_HINT_TOGGLED (hintdesc)) {
ret = g_param_spec_boolean (name, name, name, 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! */
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, 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_ladspa_class_init (GstLADSPAClass * klass)
{
GObjectClass *gobject_class;
GstSignalProcessorClass *gsp_class;
LADSPA_Descriptor *desc;
gint i, control_in_count, control_out_count;
GST_DEBUG ("class_init %p", klass);
gobject_class = (GObjectClass *) klass;
gobject_class->set_property = gst_ladspa_set_property;
gobject_class->get_property = gst_ladspa_get_property;
gsp_class = GST_SIGNAL_PROCESSOR_CLASS (klass);
gsp_class->setup = gst_ladspa_setup;
gsp_class->start = gst_ladspa_start;
gsp_class->stop = gst_ladspa_stop;
gsp_class->cleanup = gst_ladspa_cleanup;
gsp_class->process = gst_ladspa_process;
desc = klass->descriptor;
g_assert (desc);
gsp_class->num_control_in = 0;
gsp_class->num_control_out = 0;
for (i = 0; i < desc->PortCount; i++) {
LADSPA_PortDescriptor p = desc->PortDescriptors[i];
if (!LADSPA_IS_PORT_AUDIO (p)) {
if (LADSPA_IS_PORT_INPUT (p))
gsp_class->num_control_in++;
else
gsp_class->num_control_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);
control_in_count = control_out_count = 0;
for (i = 0; i < desc->PortCount; i++) {
LADSPA_PortDescriptor p = desc->PortDescriptors[i];
if (!LADSPA_IS_PORT_AUDIO (p)) {
if (LADSPA_IS_PORT_INPUT (p))
klass->control_in_portnums[control_in_count++] = i;
else
klass->control_out_portnums[control_out_count++] = i;
}
}
g_assert (control_in_count == gsp_class->num_control_in);
g_assert (control_out_count == gsp_class->num_control_out);
for (i = 0; i < gsp_class->num_control_in; i++) {
GParamSpec *p;
p = gst_ladspa_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_ladspa_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_ladspa_init (GstLADSPA * ladspa, GstLADSPAClass * klass)
{
/* whoopee, nothing to do */
ladspa->descriptor = klass->descriptor;
ladspa->activated = FALSE;
ladspa->inplace_broken =
LADSPA_IS_INPLACE_BROKEN (ladspa->descriptor->Properties);
}
static void
gst_ladspa_set_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec)
{
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 ();
}
}
static void
gst_ladspa_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
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_assert_not_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_assert_not_reached ();
}
}
static gboolean
gst_ladspa_setup (GstSignalProcessor * gsp, guint sample_rate)
{
GstLADSPA *ladspa;
GstLADSPAClass *oclass;
GstSignalProcessorClass *gsp_class;
LADSPA_Descriptor *desc;
int i;
gsp_class = GST_SIGNAL_PROCESSOR_GET_CLASS (gsp);
ladspa = (GstLADSPA *) gsp;
oclass = (GstLADSPAClass *) 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]));
return TRUE;
}
static gboolean
gst_ladspa_start (GstSignalProcessor * gsp)
{
GstLADSPA *ladspa;
LADSPA_Descriptor *desc;
ladspa = (GstLADSPA *) 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;
return TRUE;
}
static void
gst_ladspa_stop (GstSignalProcessor * gsp)
{
GstLADSPA *ladspa;
LADSPA_Descriptor *desc;
ladspa = (GstLADSPA *) 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;
}
static void
gst_ladspa_cleanup (GstSignalProcessor * gsp)
{
GstLADSPA *ladspa;
LADSPA_Descriptor *desc;
ladspa = (GstLADSPA *) 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;
}
static void
gst_ladspa_process (GstSignalProcessor * gsp, guint nframes)
{
GstSignalProcessorClass *gsp_class;
GstLADSPA *ladspa;
GstLADSPAClass *oclass;
LADSPA_Descriptor *desc;
guint i;
gsp_class = GST_SIGNAL_PROCESSOR_GET_CLASS (gsp);
ladspa = (GstLADSPA *) gsp;
oclass = (GstLADSPAClass *) 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);
}
static void
ladspa_describe_plugin (const char *pcFullFilename,
void *pvPluginHandle, LADSPA_Descriptor_Function pfDescriptorFunction)
{
const LADSPA_Descriptor *desc;
gint i;
GTypeInfo typeinfo = {
sizeof (GstLADSPAClass),
(GBaseInitFunc) gst_ladspa_base_init,
NULL,
(GClassInitFunc) gst_ladspa_class_init,
NULL,
NULL,
sizeof (GstLADSPA),
0,
(GInstanceInitFunc) gst_ladspa_init,
};
GType type;
/* walk through all the plugins in this pluginlibrary */
i = 0;
while ((desc = pfDescriptorFunction (i++))) {
gchar *type_name;
/* construct the type */
type_name = g_strdup_printf ("ladspa-%s", desc->Label);
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)) {
g_free (type_name);
continue;
}
/* base-init temp alloc */
g_hash_table_insert (ladspa_descriptors,
GINT_TO_POINTER (0), (gpointer) desc);
/* create the type now */
type =
g_type_register_static (GST_TYPE_SIGNAL_PROCESSOR, type_name, &typeinfo,
0);
if (!gst_element_register (ladspa_plugin, type_name, GST_RANK_NONE, type))
continue;
/* add this plugin to the hash */
g_hash_table_insert (ladspa_descriptors,
GINT_TO_POINTER (type), (gpointer) desc);
}
g_hash_table_remove (ladspa_descriptors, GINT_TO_POINTER (0));
}
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (ladspa_debug, "ladspa",
GST_DEBUG_FG_GREEN | GST_DEBUG_BG_BLACK | GST_DEBUG_BOLD, "LADSPA");
ladspa_descriptors = g_hash_table_new (NULL, NULL);
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
ladspa_plugin = plugin;
LADSPAPluginSearch (ladspa_describe_plugin);
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"ladspa",
"All LADSPA plugins",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN)