gstreamer/ext/ladspa/gstladspa.c
Stefan Kost 84371908c8 deactivate and remove dparams (libgstcontrol)
Original commit message from CVS:
deactivate and remove dparams (libgstcontrol)
2005-08-01 16:22:31 +00:00

958 lines
31 KiB
C

/* 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/control/control.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
static GstStaticCaps ladspa_pad_caps =
GST_STATIC_CAPS (GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_CAPS);
static void gst_ladspa_class_init (GstLADSPAClass * klass);
static void gst_ladspa_base_init (GstLADSPAClass * klass);
static void gst_ladspa_init (GstLADSPA * ladspa);
static void gst_ladspa_update_int (const GValue * value, gpointer data);
static GstPadLinkReturn gst_ladspa_link (GstPad * pad, const GstCaps * caps);
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_instantiate (GstLADSPA * ladspa);
static void gst_ladspa_activate (GstLADSPA * ladspa);
static void gst_ladspa_deactivate (GstLADSPA * ladspa);
static GstElementStateReturn gst_ladspa_change_state (GstElement * element);
static void gst_ladspa_loop (GstElement * element);
static void gst_ladspa_chain (GstPad * pad, GstData * _data);
static GstData *gst_ladspa_get (GstPad * pad);
static GstElementClass *parent_class = NULL;
static GstPlugin *ladspa_plugin;
static GHashTable *ladspa_descriptors;
enum
{
ARG_0,
ARG_SAMPLERATE,
ARG_BUFFERSIZE,
ARG_LAST
};
GST_DEBUG_CATEGORY_STATIC (ladspa_debug);
#define GST_CAT_DEFAULT ladspa_debug
static void
gst_ladspa_base_init (GstLADSPAClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstPadTemplate *templ;
GstElementDetails *details;
LADSPA_Descriptor *desc;
gint j, sinkcount, srccount;
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);
/* pad templates */
klass->numports = desc->PortCount;
klass->numsinkpads = 0;
klass->numsrcpads = 0;
for (j = 0; j < desc->PortCount; j++) {
if (LADSPA_IS_PORT_AUDIO (desc->PortDescriptors[j])) {
gchar *name = g_strdup ((gchar *) desc->PortNames[j]);
g_strcanon (name, G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-", '-');
/* the factories take ownership of the name */
if (LADSPA_IS_PORT_INPUT (desc->PortDescriptors[j])) {
templ = gst_pad_template_new (name, GST_PAD_SINK, GST_PAD_ALWAYS,
gst_caps_copy (gst_static_caps_get (&ladspa_pad_caps)));
klass->numsinkpads++;
} else {
templ = gst_pad_template_new (name, GST_PAD_SRC, GST_PAD_ALWAYS,
gst_caps_copy (gst_static_caps_get (&ladspa_pad_caps)));
klass->numsrcpads++;
}
gst_element_class_add_pad_template (element_class, templ);
}
}
/* 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 ((klass->numsinkpads > 0) && (klass->numsrcpads > 0))
details->klass = "Filter/Effect/Audio/LADSPA";
else if ((klass->numsinkpads == 0) && (klass->numsrcpads > 0))
details->klass = "Source/Audio/LADSPA";
else if ((klass->numsinkpads > 0) && (klass->numsrcpads == 0))
details->klass = "Sink/Audio/LADSPA";
else
details->klass = "Filter/Effect/Audio/LADSPA"; /* whatever this is */
gst_element_class_set_details (element_class, details);
klass->srcpad_portnums = g_new0 (gint, klass->numsrcpads);
klass->sinkpad_portnums = g_new0 (gint, klass->numsinkpads);
sinkcount = 0;
srccount = 0;
/* walk through the ports, note the portnums for srcpads, sinkpads */
for (j = 0; j < desc->PortCount; j++) {
if (LADSPA_IS_PORT_AUDIO (desc->PortDescriptors[j])) {
if (LADSPA_IS_PORT_INPUT (desc->PortDescriptors[j]))
klass->sinkpad_portnums[sinkcount++] = j;
else
klass->srcpad_portnums[srccount++] = j;
}
}
klass->descriptor = desc;
}
static void
gst_ladspa_class_init (GstLADSPAClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
LADSPA_Descriptor *desc;
gint i, current_portnum, controlcount;
gint hintdesc;
gint argtype, argperms;
GParamSpec *paramspec = NULL;
gchar *argname, *tempstr, *paren;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gobject_class->set_property = gst_ladspa_set_property;
gobject_class->get_property = gst_ladspa_get_property;
gstelement_class->change_state = gst_ladspa_change_state;
/* look up and store the ladspa descriptor */
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->numcontrols = 0;
/* walk through the ports, count the input, output and control ports */
for (i = 0; i < desc->PortCount; i++) {
if (!LADSPA_IS_PORT_AUDIO (desc->PortDescriptors[i]) &&
LADSPA_IS_PORT_INPUT (desc->PortDescriptors[i]))
klass->numcontrols++;
}
GST_DEBUG ("ladspa element class: init %s with %d sink, %d src, %d control\n",
g_type_name (G_TYPE_FROM_CLASS (klass)),
klass->numsinkpads, klass->numsrcpads, klass->numcontrols);
klass->control_portnums = g_new0 (gint, klass->numcontrols);
controlcount = 0;
/* walk through the ports, note the portnums for control params */
for (i = 0; i < desc->PortCount; i++) {
if (!LADSPA_IS_PORT_AUDIO (desc->PortDescriptors[i]) &&
LADSPA_IS_PORT_INPUT (desc->PortDescriptors[i]))
klass->control_portnums[controlcount++] = i;
}
/* now build the control info from the control ports */
klass->control_info = g_new0 (ladspa_control_info, klass->numcontrols);
for (i = 0; i < klass->numcontrols; i++) {
current_portnum = klass->control_portnums[i];
/* short name for hint descriptor */
hintdesc = desc->PortRangeHints[current_portnum].HintDescriptor;
/* get the various bits */
if (LADSPA_IS_HINT_TOGGLED (hintdesc))
klass->control_info[i].toggled = TRUE;
if (LADSPA_IS_HINT_LOGARITHMIC (hintdesc))
klass->control_info[i].logarithmic = TRUE;
if (LADSPA_IS_HINT_INTEGER (hintdesc))
klass->control_info[i].integer = TRUE;
/* figure out the argument details */
if (klass->control_info[i].toggled)
argtype = G_TYPE_BOOLEAN;
else if (klass->control_info[i].integer)
argtype = G_TYPE_INT;
else
argtype = G_TYPE_FLOAT;
/* grab the bounds */
if (LADSPA_IS_HINT_BOUNDED_BELOW (hintdesc)) {
klass->control_info[i].lower = TRUE;
klass->control_info[i].lowerbound =
desc->PortRangeHints[current_portnum].LowerBound;
} else {
if (argtype == G_TYPE_INT)
klass->control_info[i].lowerbound = (gfloat) G_MININT;
if (argtype == G_TYPE_FLOAT)
klass->control_info[i].lowerbound = -G_MAXFLOAT;
}
if (LADSPA_IS_HINT_BOUNDED_ABOVE (hintdesc)) {
klass->control_info[i].upper = TRUE;
klass->control_info[i].upperbound =
desc->PortRangeHints[current_portnum].UpperBound;
if (LADSPA_IS_HINT_SAMPLE_RATE (hintdesc)) {
klass->control_info[i].samplerate = TRUE;
klass->control_info[i].upperbound *= 44100; /* FIXME? */
}
} else {
if (argtype == G_TYPE_INT)
klass->control_info[i].upperbound = (gfloat) G_MAXINT;
if (argtype == G_TYPE_FLOAT)
klass->control_info[i].upperbound = G_MAXFLOAT;
}
/* use the lowerbound as the default value */
klass->control_info[i].def = klass->control_info[i].lowerbound;
#ifdef LADSPA_IS_HINT_HAS_DEFAULT
/* figure out the defaults */
if (LADSPA_IS_HINT_HAS_DEFAULT (hintdesc)) {
if (LADSPA_IS_HINT_DEFAULT_MINIMUM (hintdesc))
klass->control_info[i].def = klass->control_info[i].lowerbound;
else if (LADSPA_IS_HINT_DEFAULT_LOW (hintdesc))
if (LADSPA_IS_HINT_LOGARITHMIC (hintdesc))
klass->control_info[i].def =
exp (0.75 * log (klass->control_info[i].lowerbound) +
0.25 * log (klass->control_info[i].upperbound));
else
klass->control_info[i].def =
(0.75 * klass->control_info[i].lowerbound +
0.25 * klass->control_info[i].upperbound);
else if (LADSPA_IS_HINT_DEFAULT_MIDDLE (hintdesc))
if (LADSPA_IS_HINT_LOGARITHMIC (hintdesc))
klass->control_info[i].def =
exp (0.5 * log (klass->control_info[i].lowerbound) +
0.5 * log (klass->control_info[i].upperbound));
else
klass->control_info[i].def =
(0.5 * klass->control_info[i].lowerbound +
0.5 * klass->control_info[i].upperbound);
else if (LADSPA_IS_HINT_DEFAULT_HIGH (hintdesc))
if (LADSPA_IS_HINT_LOGARITHMIC (hintdesc))
klass->control_info[i].def =
exp (0.25 * log (klass->control_info[i].lowerbound) +
0.75 * log (klass->control_info[i].upperbound));
else
klass->control_info[i].def =
(0.25 * klass->control_info[i].lowerbound +
0.75 * klass->control_info[i].upperbound);
else if (LADSPA_IS_HINT_DEFAULT_MAXIMUM (hintdesc))
klass->control_info[i].def = klass->control_info[i].upperbound;
else if (LADSPA_IS_HINT_DEFAULT_0 (hintdesc))
klass->control_info[i].def = 0.0;
else if (LADSPA_IS_HINT_DEFAULT_1 (hintdesc))
klass->control_info[i].def = 1.0;
else if (LADSPA_IS_HINT_DEFAULT_100 (hintdesc))
klass->control_info[i].def = 100.0;
else if (LADSPA_IS_HINT_DEFAULT_440 (hintdesc))
klass->control_info[i].def = 440.0;
}
#endif /* LADSPA_IS_HINT_HAS_DEFAULT */
klass->control_info[i].def = CLAMP (klass->control_info[i].def,
klass->control_info[i].lowerbound, klass->control_info[i].upperbound);
if (LADSPA_IS_PORT_INPUT (desc->PortDescriptors[current_portnum])) {
argperms = G_PARAM_READWRITE;
klass->control_info[i].writable = TRUE;
} else {
argperms = G_PARAM_READABLE;
klass->control_info[i].writable = FALSE;
}
klass->control_info[i].name = g_strdup (desc->PortNames[current_portnum]);
argname = g_strdup (klass->control_info[i].name);
/* find out if there is a (unitname) at the end of the argname and get rid
of it */
paren = g_strrstr (argname, " (");
if (paren != NULL) {
*paren = '\0';
}
/* this is the same thing that param_spec_* will do */
g_strcanon (argname, G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-", '-');
/* satisfy glib2 (argname[0] must be [A-Za-z]) */
if (!((argname[0] >= 'a' && argname[0] <= 'z') || (argname[0] >= 'A'
&& argname[0] <= 'Z'))) {
tempstr = argname;
argname = g_strconcat ("param-", argname, NULL);
g_free (tempstr);
}
/* check for duplicate property names */
if (g_object_class_find_property (G_OBJECT_CLASS (klass), argname) != NULL) {
gint numarg = 1;
gchar *numargname = g_strdup_printf ("%s_%d", argname, numarg++);
while (g_object_class_find_property (G_OBJECT_CLASS (klass),
numargname) != NULL) {
g_free (numargname);
numargname = g_strdup_printf ("%s_%d", argname, numarg++);
}
argname = numargname;
}
klass->control_info[i].param_name = argname;
GST_DEBUG ("adding arg %s from %s with access-mode=%d", argname,
klass->control_info[i].name, argperms);
if (argtype == G_TYPE_BOOLEAN) {
paramspec =
g_param_spec_boolean (argname, argname, argname, FALSE, argperms);
} else if (argtype == G_TYPE_INT) {
if (klass->control_info[i].lowerbound > klass->control_info[i].upperbound) {
gfloat swap;
GST_ERROR
(" wrong order of parameter bounds %f ... %f ... %f in \"%s\" plugin",
klass->control_info[i].lowerbound, klass->control_info[i].def,
klass->control_info[i].upperbound, klass->descriptor->Name);
swap = klass->control_info[i].upperbound;
klass->control_info[i].upperbound = klass->control_info[i].lowerbound;
klass->control_info[i].lowerbound = swap;
}
paramspec = g_param_spec_int (argname, argname, argname,
(gint) klass->control_info[i].lowerbound,
(gint) klass->control_info[i].upperbound,
(gint) klass->control_info[i].def, argperms);
} else if (klass->control_info[i].samplerate) {
paramspec = g_param_spec_float (argname, argname, argname,
0.0, G_MAXFLOAT, 0.0, argperms);
} else {
if (klass->control_info[i].lowerbound > klass->control_info[i].upperbound) {
gfloat swap;
GST_ERROR
(" wrong order of parameter bounds %f ... %f ... %f in \"%s\" plugin",
klass->control_info[i].lowerbound, klass->control_info[i].def,
klass->control_info[i].upperbound, klass->descriptor->Name);
swap = klass->control_info[i].upperbound;
klass->control_info[i].upperbound = klass->control_info[i].lowerbound;
klass->control_info[i].lowerbound = swap;
}
paramspec = g_param_spec_float (argname, argname, argname,
klass->control_info[i].lowerbound, klass->control_info[i].upperbound,
klass->control_info[i].def, argperms);
}
/* properties have an offset of 1 */
g_object_class_install_property (G_OBJECT_CLASS (klass), i + 1, paramspec);
}
}
static void
gst_ladspa_init (GstLADSPA * ladspa)
{
GstLADSPAClass *oclass;
ladspa_control_info cinfo;
GList *l;
LADSPA_Descriptor *desc;
gint i, sinkcount, srccount;
oclass = (GstLADSPAClass *) G_OBJECT_GET_CLASS (ladspa);
desc = oclass->descriptor;
ladspa->descriptor = oclass->descriptor;
/* allocate the various arrays */
ladspa->srcpads = g_new0 (GstPad *, oclass->numsrcpads);
ladspa->sinkpads = g_new0 (GstPad *, oclass->numsinkpads);
ladspa->controls = g_new (gfloat, oclass->numcontrols);
/* set up pads */
sinkcount = 0;
srccount = 0;
for (l = GST_ELEMENT_CLASS (oclass)->padtemplates; l; l = l->next) {
GstPad *pad = gst_pad_new_from_template (GST_PAD_TEMPLATE (l->data),
GST_PAD_TEMPLATE_NAME_TEMPLATE (l->data));
gst_pad_set_link_function (pad, gst_ladspa_link);
gst_element_add_pad ((GstElement *) ladspa, pad);
if (GST_PAD_DIRECTION (pad) == GST_PAD_SINK)
ladspa->sinkpads[sinkcount++] = pad;
else
ladspa->srcpads[srccount++] = pad;
}
/* nonzero default needed to instantiate() some plugins */
ladspa->samplerate = 44100;
ladspa->buffer_frames = 0; /* should be set with caps */
ladspa->activated = FALSE;
ladspa->inplace_broken =
LADSPA_IS_INPLACE_BROKEN (ladspa->descriptor->Properties);
if (sinkcount == 0 && srccount == 1) {
/* get mode (no sink pads) */
GST_DEBUG_OBJECT (ladspa, "mono get mode with 1 src pad");
gst_pad_set_get_function (ladspa->srcpads[0], gst_ladspa_get);
} else if (sinkcount == 1) {
/* with one sink we can use the chain function */
GST_DEBUG_OBJECT (ladspa, "chain mode");
gst_pad_set_chain_function (ladspa->sinkpads[0], gst_ladspa_chain);
} else if (sinkcount > 1) {
/* more than one sink pad needs loop mode */
GST_DEBUG_OBJECT (ladspa, "loop mode with %d sink pads and %d src pads",
sinkcount, srccount);
gst_element_set_loop_function (GST_ELEMENT (ladspa), gst_ladspa_loop);
} else if (sinkcount == 0 && srccount == 0) {
/* for example, a plugin with only control inputs and output -- just ignore
* it for now */
} else {
g_warning ("%d sink pads, %d src pads not yet supported", sinkcount,
srccount);
}
gst_ladspa_instantiate (ladspa);
}
static void
gst_ladspa_update_int (const GValue * value, gpointer data)
{
gfloat *target = (gfloat *) data;
*target = (gfloat) g_value_get_int (value);
}
static GstPadLinkReturn
gst_ladspa_link (GstPad * pad, const GstCaps * caps)
{
GstElement *element = (GstElement *) GST_PAD_PARENT (pad);
GstLADSPA *ladspa = (GstLADSPA *) element;
const GList *l = NULL;
gint rate;
GstStructure *structure;
/* if this fails in some other plugin, the graph is left in an inconsistent
state */
for (l = gst_element_get_pad_list (element); l; l = l->next)
if (pad != (GstPad *) l->data)
if (gst_pad_try_set_caps ((GstPad *) l->data, caps) <= 0)
return GST_PAD_LINK_REFUSED;
/* we assume that the ladspa plugin can handle any sample rate, so this
check gets put last */
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "rate", &rate);
/* have to instantiate ladspa plugin when samplerate changes (groan) */
if (ladspa->samplerate != rate) {
ladspa->samplerate = rate;
if (!gst_ladspa_instantiate (ladspa))
return GST_PAD_LINK_REFUSED;
}
gst_structure_get_int (structure, "buffer-frames", &ladspa->buffer_frames);
return GST_PAD_LINK_OK;
}
#if 0
static void
gst_ladspa_force_src_caps (GstLADSPA * ladspa, GstPad * pad)
{
if (!ladspa->buffer_frames) {
ladspa->buffer_frames = 256; /* 5 ms at 44100 kHz (just a default...) */
}
GST_DEBUG_OBJECT (ladspa, "forcing caps with rate=%d, buffer-frames=%d",
ladspa->samplerate, ladspa->buffer_frames);
gst_pad_try_set_caps (pad,
gst_caps_new ("ladspa_src_caps",
"audio/x-raw-float",
gst_props_new ("width", G_TYPE_INT (32),
"endianness", G_TYPE_INT (G_BYTE_ORDER),
"rate", G_TYPE_INT (ladspa->samplerate),
"buffer-frames", G_TYPE_INT (ladspa->buffer_frames),
"channels", G_TYPE_INT (1), NULL)));
}
#endif
static void
gst_ladspa_set_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec)
{
GstLADSPA *ladspa = (GstLADSPA *) object;
GstLADSPAClass *oclass;
ladspa_control_info *control_info;
oclass = (GstLADSPAClass *) (G_OBJECT_GET_CLASS (object));
/* remember, properties have an offset of 1 */
prop_id--;
/* verify it exists */
g_return_if_fail (prop_id < oclass->numcontrols);
control_info = &(oclass->control_info[prop_id]);
g_return_if_fail (control_info->name != NULL);
/* check to see if it's writable */
g_return_if_fail (control_info->writable);
/* now see what type it is */
if (control_info->toggled)
ladspa->controls[prop_id] = g_value_get_boolean (value) ? 1.f : 0.f;
else if (control_info->integer)
ladspa->controls[prop_id] = g_value_get_int (value);
else
ladspa->controls[prop_id] = g_value_get_float (value);
GST_DEBUG_OBJECT (object, "set arg %s to %f", control_info->name,
ladspa->controls[prop_id]);
}
static void
gst_ladspa_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstLADSPA *ladspa = (GstLADSPA *) object;
GstLADSPAClass *oclass = (GstLADSPAClass *) (G_OBJECT_GET_CLASS (object));
ladspa_control_info *control_info;
/* remember, properties have an offset of 1 */
prop_id--;
/* verify it exists */
g_return_if_fail (prop_id < oclass->numcontrols);
control_info = &(oclass->control_info[prop_id]);
g_return_if_fail (control_info->name != NULL);
/* now see what type it is */
if (control_info->toggled)
g_value_set_boolean (value, ladspa->controls[prop_id] == 1.0);
else if (control_info->integer)
g_value_set_int (value, (gint) ladspa->controls[prop_id]);
else
g_value_set_float (value, ladspa->controls[prop_id]);
GST_DEBUG_OBJECT (object, "got arg %s as %f", control_info->name,
ladspa->controls[prop_id]);
}
static gboolean
gst_ladspa_instantiate (GstLADSPA * ladspa)
{
LADSPA_Descriptor *desc;
int i;
GstLADSPAClass *oclass = (GstLADSPAClass *) (G_OBJECT_GET_CLASS (ladspa));
gboolean was_activated;
desc = ladspa->descriptor;
/* check for old handle */
was_activated = ladspa->activated;
if (ladspa->handle != NULL) {
gst_ladspa_deactivate (ladspa);
desc->cleanup (ladspa->handle);
}
/* instantiate the plugin */
GST_DEBUG_OBJECT (ladspa, "instantiating the plugin at %d Hz",
ladspa->samplerate);
ladspa->handle = desc->instantiate (desc, ladspa->samplerate);
g_return_val_if_fail (ladspa->handle != NULL, FALSE);
/* connect the control ports */
for (i = 0; i < oclass->numcontrols; i++)
desc->connect_port (ladspa->handle,
oclass->control_portnums[i], &(ladspa->controls[i]));
/* reactivate if it was activated before the reinstantiation */
if (was_activated)
gst_ladspa_activate (ladspa);
return TRUE;
}
static GstElementStateReturn
gst_ladspa_change_state (GstElement * element)
{
LADSPA_Descriptor *desc;
GstLADSPA *ladspa = (GstLADSPA *) element;
desc = ladspa->descriptor;
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
gst_ladspa_activate (ladspa);
break;
case GST_STATE_READY_TO_NULL:
gst_ladspa_deactivate (ladspa);
break;
default:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
static void
gst_ladspa_activate (GstLADSPA * ladspa)
{
LADSPA_Descriptor *desc;
desc = ladspa->descriptor;
if (ladspa->activated)
gst_ladspa_deactivate (ladspa);
GST_DEBUG_OBJECT (ladspa, "activating");
/* activate the plugin (function might be null) */
if (desc->activate != NULL)
desc->activate (ladspa->handle);
ladspa->activated = TRUE;
}
static void
gst_ladspa_deactivate (GstLADSPA * ladspa)
{
LADSPA_Descriptor *desc;
desc = ladspa->descriptor;
GST_DEBUG_OBJECT (ladspa, "deactivating");
/* deactivate the plugin (function might be null) */
if (ladspa->activated && (desc->deactivate != NULL))
desc->deactivate (ladspa->handle);
ladspa->activated = FALSE;
}
static void
gst_ladspa_loop (GstElement * element)
{
guint i, j, numsrcpads, numsinkpads;
glong num_samples;
LADSPA_Data **data_in, **data_out;
GstBuffer **buffers_in, **buffers_out;
GstLADSPA *ladspa = (GstLADSPA *) element;
GstLADSPAClass *oclass = (GstLADSPAClass *) (G_OBJECT_GET_CLASS (ladspa));
LADSPA_Descriptor *desc = ladspa->descriptor;
numsinkpads = oclass->numsinkpads;
numsrcpads = oclass->numsrcpads;
/* fixme: these mallocs need to die */
data_in = g_new0 (LADSPA_Data *, numsinkpads);
data_out = g_new0 (LADSPA_Data *, numsrcpads);
buffers_in = g_new0 (GstBuffer *, numsinkpads);
buffers_out = g_new0 (GstBuffer *, numsrcpads);
/* determine largest buffer */
num_samples = -1;
/* first get all the necessary data from the input ports */
for (i = 0; i < numsinkpads; i++) {
get_buffer:
buffers_in[i] = GST_BUFFER (gst_pad_pull (ladspa->sinkpads[i]));
if (GST_IS_EVENT (buffers_in[i])) {
/* push it out on all pads */
gst_data_ref_by_count ((GstData *) buffers_in[i], numsrcpads);
for (j = 0; j < numsrcpads; j++)
gst_pad_push (ladspa->srcpads[j], GST_DATA (buffers_in[i]));
if (GST_EVENT_TYPE (buffers_in[i]) == GST_EVENT_EOS) {
/* shut down */
gst_element_set_eos (element);
return;
} else {
goto get_buffer;
}
}
if (num_samples < 0)
num_samples = GST_BUFFER_SIZE (buffers_in[i]) / sizeof (gfloat);
else
num_samples =
MIN (GST_BUFFER_SIZE (buffers_in[i]) / sizeof (gfloat), num_samples);
data_in[i] = (LADSPA_Data *) GST_BUFFER_DATA (buffers_in[i]);
GST_BUFFER_TIMESTAMP (buffers_in[i]) = ladspa->timestamp;
}
i = 0;
if (!ladspa->inplace_broken) {
for (; i < numsrcpads && i < numsinkpads; i++) {
/* reuse input buffers */
buffers_out[i] = buffers_in[i];
data_out[i] = data_in[i];
}
}
for (; i < numsrcpads; i++) {
buffers_out[i] =
gst_buffer_new_and_alloc (ladspa->buffer_frames * sizeof (gfloat));
GST_BUFFER_TIMESTAMP (buffers_out[i]) = ladspa->timestamp;
data_out[i] = (LADSPA_Data *) GST_BUFFER_DATA (buffers_out[i]);
}
/* process chunk */
for (i = 0; i < numsinkpads; i++)
desc->connect_port (ladspa->handle, oclass->sinkpad_portnums[i],
data_in[i]);
for (i = 0; i < numsrcpads; i++)
desc->connect_port (ladspa->handle, oclass->srcpad_portnums[i],
data_out[i]);
desc->run (ladspa->handle, num_samples);
for (i = 0; i < numsinkpads; i++) {
if (i >= numsrcpads || buffers_out[i] != buffers_in[i])
gst_buffer_unref (buffers_in[i]);
data_in[i] = NULL;
buffers_in[i] = NULL;
}
for (i = 0; i < numsrcpads; i++) {
GST_DEBUG_OBJECT (ladspa, "pushing buffer (%p) on src pad %d",
buffers_out[i], i);
gst_pad_push (ladspa->srcpads[i], GST_DATA (buffers_out[i]));
data_out[i] = NULL;
buffers_out[i] = NULL;
}
ladspa->timestamp += ladspa->buffer_frames * GST_SECOND / ladspa->samplerate;
/* FIXME: move these mallocs and frees to the state-change handler */
g_free (buffers_out);
g_free (buffers_in);
g_free (data_out);
g_free (data_in);
}
static void
gst_ladspa_chain (GstPad * pad, GstData * _data)
{
GstBuffer *buffer_in = GST_BUFFER (_data);
LADSPA_Descriptor *desc;
LADSPA_Data *data_in, **data_out = NULL;
GstBuffer **buffers_out = NULL;
gulong num_samples;
guint i, numsrcpads;
GstLADSPA *ladspa;
GstLADSPAClass *oclass;
ladspa = (GstLADSPA *) GST_OBJECT_PARENT (pad);
oclass = (GstLADSPAClass *) (G_OBJECT_GET_CLASS (ladspa));
data_in = (LADSPA_Data *) GST_BUFFER_DATA (buffer_in);
num_samples = GST_BUFFER_SIZE (buffer_in) / sizeof (gfloat);
numsrcpads = oclass->numsrcpads;
desc = ladspa->descriptor;
/* we shouldn't get events here... */
g_return_if_fail (GST_IS_BUFFER (buffer_in));
/* FIXME: this function shouldn't need to malloc() anything */
if (numsrcpads > 0) {
buffers_out = g_new (GstBuffer *, numsrcpads);
data_out = g_new (LADSPA_Data *, numsrcpads);
}
i = 0;
if (!ladspa->inplace_broken && numsrcpads) {
/* reuse the first (chained) buffer */
buffers_out[i] = buffer_in;
GST_DEBUG ("reuse: %d", GST_BUFFER_SIZE (buffer_in));
data_out[i] = data_in;
i++;
}
for (; i < numsrcpads; i++) {
buffers_out[i] = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buffer_in));
GST_DEBUG ("new %d", GST_BUFFER_SIZE (buffer_in));
GST_BUFFER_TIMESTAMP (buffers_out[i]) = ladspa->timestamp;
data_out[i] = (LADSPA_Data *) GST_BUFFER_DATA (buffers_out[i]);
}
/* process chunk */
desc->connect_port (ladspa->handle, oclass->sinkpad_portnums[0], data_in);
for (i = 0; i < numsrcpads; i++)
desc->connect_port (ladspa->handle, oclass->srcpad_portnums[i],
data_out[i]);
desc->run (ladspa->handle, num_samples);
if (!numsrcpads || buffers_out[0] != buffer_in)
gst_buffer_unref (buffer_in);
if (numsrcpads) {
for (i = 0; i < numsrcpads; i++) {
GST_DEBUG_OBJECT (ladspa,
"pushing buffer (%p, length %u bytes) on src pad %d", buffers_out[i],
GST_BUFFER_SIZE (buffers_out[i]), i);
gst_pad_push (ladspa->srcpads[i], GST_DATA (buffers_out[i]));
}
g_free (buffers_out);
g_free (data_out);
}
}
static GstData *
gst_ladspa_get (GstPad * pad)
{
GstLADSPA *ladspa;
GstLADSPAClass *oclass;
GstBuffer *buf;
LADSPA_Data *data;
LADSPA_Descriptor *desc;
ladspa = (GstLADSPA *) gst_pad_get_parent (pad);
oclass = (GstLADSPAClass *) (G_OBJECT_GET_CLASS (ladspa));
desc = ladspa->descriptor;
/* 4096 is arbitrary */
buf = gst_buffer_new_and_alloc (4096);
GST_BUFFER_TIMESTAMP (buf) = ladspa->timestamp;
data = (LADSPA_Data *) GST_BUFFER_DATA (buf);
/* update timestamp */
ladspa->timestamp += num_to_process * GST_SECOND / ladspa->samplerate;
/* process chunk */
desc->connect_port (ladspa->handle, oclass->srcpad_portnums[0], data);
desc->run (ladspa->handle, ladspa->buffer_frames);
return GST_DATA (buf);
}
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_ELEMENT, 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)