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gstreamer/ext/ladspa/gstladspa.c
Ronald S. Bultje 38946080fd New typefind system: bytestream is now part of the core all plugins have been modified to use this new typefind syste... 
Original commit message from CVS:
New typefind system:
* bytestream is now part of the core
* all plugins have been modified to use this new typefind system
* asf typefinding added
* mpeg video stream typefiding removed because it's broken
* duplicate typefind entries removed
* extra id3 typefinding added, because we've seen 4 types of files
(riff/wav, flac, vorbis, mp3) with id3 headers and each of these needs
to work. Instead, I've added an id3 element and let it redo typefiding
after the id3 header. this needs a hack because spider only typefinds
once. We can remove this hack once spider supports multiple typefinds.
* with all this, mp3 typefinding is semi-rewritten
* id3 typefinding in flac/vorbis is removed, it's no longer needed
* fixed spider and gst-typefind to use this, too.
* Other general cleanups
2003-10-01 13:14:52 +00:00

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* <2001> Steve Baker <stevebaker_org@yahoo.co.uk>
*
* 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.
*/
#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 */
/* takes ownership of the name */
static GstPadTemplate*
ladspa_sink_factory (gchar *name)
{
return GST_PAD_TEMPLATE_NEW (
name,
GST_PAD_SINK,
GST_PAD_ALWAYS,
gst_caps_new (
"ladspa_sink",
"audio/x-raw-float",
GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_PROPS
)
);
}
/* takes ownership of the name */
static GstPadTemplate*
ladspa_src_factory (gchar *name)
{
return GST_PAD_TEMPLATE_NEW (
name,
GST_PAD_SRC,
GST_PAD_ALWAYS,
gst_caps_new (
"ladspa_src",
"audio/x-raw-float",
GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_PROPS
)
);
}
static void gst_ladspa_class_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, GstCaps *caps);
static void gst_ladspa_force_src_caps (GstLADSPA *ladspa, GstPad *pad);
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,GstBuffer *buf);
static GstBuffer * 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 DEBUG(...) \
GST_CAT_LEVEL_LOG (ladspa_debug, GST_LEVEL_DEBUG, NULL, __VA_ARGS__)
#define DEBUG_OBJ(obj,...) \
GST_CAT_LEVEL_LOG (ladspa_debug, GST_LEVEL_DEBUG, obj, __VA_ARGS__)
static void
gst_ladspa_class_init (GstLADSPAClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
LADSPA_Descriptor *desc;
gint i,current_portnum,sinkcount,srccount,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 */
klass->descriptor = g_hash_table_lookup(ladspa_descriptors,GINT_TO_POINTER(G_TYPE_FROM_CLASS(klass)));
desc = klass->descriptor;
klass->numports = desc->PortCount;
klass->numsinkpads = 0;
klass->numsrcpads = 0;
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]))
if (LADSPA_IS_PORT_INPUT(desc->PortDescriptors[i]))
klass->numsinkpads++;
else
klass->numsrcpads++;
else if (LADSPA_IS_PORT_INPUT(desc->PortDescriptors[i]))
klass->numcontrols++;
}
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->srcpad_portnums = g_new0(gint,klass->numsrcpads);
klass->sinkpad_portnums = g_new0(gint,klass->numsinkpads);
klass->control_portnums = g_new0(gint,klass->numcontrols);
sinkcount = 0;
srccount = 0;
controlcount = 0;
/* walk through the ports, note the portnums for srcpads, sinkpads and control
params */
for (i=0; i<desc->PortCount; i++) {
if (LADSPA_IS_PORT_AUDIO(desc->PortDescriptors[i]))
if (LADSPA_IS_PORT_INPUT(desc->PortDescriptors[i]))
klass->sinkpad_portnums[sinkcount++] = i;
else
klass->srcpad_portnums[srccount++] = i;
else if (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;
DEBUG ("adding arg %s from %s", argname, klass->control_info[i].name);
if (argtype==G_TYPE_BOOLEAN){
paramspec = g_param_spec_boolean(argname,argname,argname, FALSE, argperms);
} else if (argtype==G_TYPE_INT){
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 {
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);
ladspa->dpman = gst_dpman_new ("ladspa_dpman", GST_ELEMENT(ladspa));
/* 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;
}
/* set up dparams */
for (i=0; i<oclass->numcontrols; i++) {
if (LADSPA_IS_PORT_INPUT(desc->PortDescriptors[i])) {
cinfo = oclass->control_info[i];
ladspa->controls[i]=cinfo.def;
if (cinfo.toggled){
gst_dpman_add_required_dparam_callback (
ladspa->dpman,
g_param_spec_int(cinfo.param_name, cinfo.name, cinfo.name,
0, 1, (gint)(ladspa->controls[i]), G_PARAM_READWRITE),
"int", gst_ladspa_update_int, &(ladspa->controls[i])
);
}
else if (cinfo.integer){
gst_dpman_add_required_dparam_callback (
ladspa->dpman,
g_param_spec_int(cinfo.param_name, cinfo.name, cinfo.name,
(gint)cinfo.lowerbound, (gint)cinfo.upperbound,
(gint)ladspa->controls[i], G_PARAM_READWRITE),
"int", gst_ladspa_update_int, &(ladspa->controls[i])
);
}
else if (cinfo.samplerate){
gst_dpman_add_required_dparam_direct (
ladspa->dpman,
g_param_spec_float(cinfo.param_name, cinfo.name, cinfo.name,
cinfo.lowerbound, cinfo.upperbound,
ladspa->controls[i], G_PARAM_READWRITE),
"hertz-rate-bound", &(ladspa->controls[i])
);
}
else {
gst_dpman_add_required_dparam_direct (
ladspa->dpman,
g_param_spec_float(cinfo.param_name, cinfo.name, cinfo.name,
cinfo.lowerbound, cinfo.upperbound,
ladspa->controls[i], G_PARAM_READWRITE),
"float", &(ladspa->controls[i])
);
}
}
}
/* nonzero default needed to instantiate() some plugins */
ladspa->samplerate = 44100;
ladspa->buffer_frames = 0; /* should be set with caps */
ladspa->activated = FALSE;
ladspa->bufpool = NULL;
ladspa->inplace_broken = LADSPA_IS_INPLACE_BROKEN(ladspa->descriptor->Properties);
if (sinkcount==0 && srccount == 1) {
/* get mode (no sink pads) */
DEBUG_OBJ (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 */
DEBUG_OBJ (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 */
DEBUG_OBJ (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, GstCaps *caps)
{
GstElement *element = (GstElement*)GST_PAD_PARENT (pad);
GstLADSPA *ladspa = (GstLADSPA*)element;
const GList *l = NULL;
gint rate;
if (GST_CAPS_IS_FIXED (caps)) {
/* 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 */
gst_caps_get_int (caps, "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_caps_get_int (caps, "buffer-frames", &ladspa->buffer_frames);
if (ladspa->bufpool)
gst_buffer_pool_unref (ladspa->bufpool);
ladspa->bufpool = gst_buffer_pool_get_default (ladspa->buffer_frames * sizeof(gfloat),
3);
return GST_PAD_LINK_OK;
}
return GST_PAD_LINK_DELAYED;
}
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...) */
g_return_if_fail (ladspa->bufpool == NULL);
ladspa->bufpool =
gst_buffer_pool_get_default (ladspa->buffer_frames * sizeof(gfloat), 3);
}
DEBUG_OBJ (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", GST_PROPS_INT (32),
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"rate", GST_PROPS_INT (ladspa->samplerate),
"buffer-frames", GST_PROPS_INT (ladspa->buffer_frames),
"channels", GST_PROPS_INT (1),
NULL)));
}
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);
DEBUG_OBJ (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]);
DEBUG_OBJ (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 */
DEBUG_OBJ (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);
DEBUG_OBJ (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;
DEBUG_OBJ (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;
guint num_processed, num_to_process;
gint largest_buffer;
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);
largest_buffer = -1;
/* first get all the necessary data from the input ports */
for (i=0 ; i<numsinkpads ; i++){
get_buffer:
buffers_in[i] = 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], 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 (largest_buffer < 0)
largest_buffer = GST_BUFFER_SIZE (buffers_in[i])/sizeof(gfloat);
else
largest_buffer = MIN (GST_BUFFER_SIZE (buffers_in[i])/sizeof(gfloat), largest_buffer);
data_in[i] = (LADSPA_Data *) GST_BUFFER_DATA(buffers_in[i]);
GST_BUFFER_TIMESTAMP(buffers_in[i]) = ladspa->timestamp;
}
if (!ladspa->bufpool) {
gst_element_error (element, "Caps were never set, bailing...");
return;
}
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++) {
/* we have to make new buffers -- at least we're taking them from a pool */
buffers_out[i] = gst_buffer_new_from_pool (ladspa->bufpool, 0, 0);
GST_BUFFER_TIMESTAMP (buffers_out[i]) = ladspa->timestamp;
data_out[i] = (LADSPA_Data*)GST_BUFFER_DATA (buffers_out[i]);
}
GST_DPMAN_PREPROCESS(ladspa->dpman, largest_buffer, ladspa->timestamp);
num_processed = 0;
/* split up processing of the buffer into chunks so that dparams can
* be updated when required.
* In many cases the buffer will be processed in one chunk anyway.
*/
while (GST_DPMAN_PROCESS (ladspa->dpman, num_processed)) {
num_to_process = GST_DPMAN_FRAMES_TO_PROCESS(ladspa->dpman);
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_to_process);
for (i=0 ; i<numsinkpads ; i++)
data_in[i] += num_to_process;
for (i=0 ; i<numsrcpads ; i++)
data_out[i] += num_to_process;
num_processed += num_to_process;
}
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++) {
DEBUG_OBJ (ladspa, "pushing buffer (%p) on src pad %d", buffers_out[i], i);
gst_pad_push (ladspa->srcpads[i], 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, GstBuffer *buffer_in)
{
LADSPA_Descriptor *desc;
LADSPA_Data *data_in, **data_out = NULL;
GstBuffer **buffers_out = NULL;
unsigned long num_samples;
guint num_to_process, num_processed, 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));
if (!ladspa->bufpool) {
gst_element_error ((GstElement*)ladspa, "Caps were never set, bailing...");
return;
}
/* 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;
DEBUG ("reuse: %d", GST_BUFFER_SIZE (buffer_in));
data_out[i] = data_in;
i++;
}
for (; i<numsrcpads; i++) {
/* we have to make new buffers -- at least we're taking them from a pool */
buffers_out[i] = gst_buffer_new_from_pool (ladspa->bufpool, 0, 0);
/* the size of the buffer returned from the pool is the maximum size; this
chained buffer might be smaller */
GST_BUFFER_SIZE (buffers_out[i]) = GST_BUFFER_SIZE (buffer_in);
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]);
}
GST_DPMAN_PREPROCESS(ladspa->dpman, num_samples, GST_BUFFER_TIMESTAMP(buffer_in));
num_processed = 0;
/* split up processing of the buffer into chunks so that dparams can
* be updated when required.
* In many cases the buffer will be processed in one chunk anyway.
*/
while(GST_DPMAN_PROCESS(ladspa->dpman, num_processed)) {
num_to_process = GST_DPMAN_FRAMES_TO_PROCESS(ladspa->dpman);
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_to_process);
data_in += num_to_process;
for (i=0 ; i<numsrcpads ; i++)
data_out[i] += num_to_process;
num_processed += num_to_process;
}
if (!numsrcpads || buffers_out[0] != buffer_in)
gst_buffer_unref(buffer_in);
if (numsrcpads) {
for (i=0; i<numsrcpads; i++) {
DEBUG_OBJ (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], buffers_out[i]);
}
g_free(buffers_out);
g_free(data_out);
}
}
static GstBuffer *
gst_ladspa_get(GstPad *pad)
{
GstLADSPA *ladspa;
GstLADSPAClass *oclass;
GstBuffer *buf;
LADSPA_Data *data;
LADSPA_Descriptor *desc;
guint num_to_process, num_processed;
ladspa = (GstLADSPA *)gst_pad_get_parent (pad);
oclass = (GstLADSPAClass*)(G_OBJECT_GET_CLASS(ladspa));
desc = ladspa->descriptor;
if (!ladspa->bufpool) {
/* capsnego hasn't happened... */
gst_ladspa_force_src_caps(ladspa, ladspa->srcpads[0]);
}
buf = gst_buffer_new_from_pool (ladspa->bufpool, 0, 0);
GST_BUFFER_TIMESTAMP(buf) = ladspa->timestamp;
data = (LADSPA_Data *) GST_BUFFER_DATA(buf);
GST_DPMAN_PREPROCESS(ladspa->dpman, ladspa->buffer_frames, ladspa->timestamp);
num_processed = 0;
/* split up processing of the buffer into chunks so that dparams can
* be updated when required.
* In many cases the buffer will be processed in one chunk anyway.
*/
while(GST_DPMAN_PROCESS(ladspa->dpman, num_processed)) {
num_to_process = GST_DPMAN_FRAMES_TO_PROCESS(ladspa->dpman);
/* update timestamp */
ladspa->timestamp += num_to_process * GST_SECOND / ladspa->samplerate;
desc->connect_port(ladspa->handle,oclass->srcpad_portnums[0],data);
desc->run(ladspa->handle, num_to_process);
data += num_to_process;
num_processed = num_to_process;
}
return buf;
}
static void
ladspa_describe_plugin(const char *pcFullFilename,
void *pvPluginHandle,
LADSPA_Descriptor_Function pfDescriptorFunction)
{
const LADSPA_Descriptor *desc;
int i,j;
GstElementDetails *details;
GTypeInfo typeinfo = {
sizeof(GstLADSPAClass),
NULL,
NULL,
(GClassInitFunc)gst_ladspa_class_init,
NULL,
NULL,
sizeof(GstLADSPA),
0,
(GInstanceInitFunc)gst_ladspa_init,
};
GType type;
GstElementFactory *factory;
/* 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;
}
/* create the type now */
type = g_type_register_static(GST_TYPE_ELEMENT, type_name, &typeinfo, 0);
/* construct the element details struct */
details = g_new0(GstElementDetails,1);
details->longname = g_strdup(desc->Name);
details->klass = "Filter/Audio/LADSPA";
details->license = g_strdup (desc->Copyright);
details->description = details->longname;
details->version = g_strdup_printf("%ld",desc->UniqueID);
details->author = g_strdup(desc->Maker);
details->copyright = g_strdup(desc->Copyright);
/* register the plugin with gstreamer */
factory = gst_element_factory_new(type_name,type,details);
g_return_if_fail(factory != NULL);
gst_plugin_add_feature (ladspa_plugin, GST_PLUGIN_FEATURE (factory));
/* add this plugin to the hash */
g_hash_table_insert(ladspa_descriptors,
GINT_TO_POINTER(type),
(gpointer)desc);
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]))
gst_element_factory_add_pad_template (factory, ladspa_sink_factory (name));
else
gst_element_factory_add_pad_template (factory, ladspa_src_factory (name));
}
}
}
}
static gboolean
plugin_init (GModule *module, 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);
/* initialize dparam support library */
gst_control_init(NULL,NULL);
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"ladspa",
plugin_init
};
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