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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>
* 2016 Thibault Saunier <thibault.saunier@collabora.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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstlv2.h"
#include "gstlv2utils.h"
#include <string.h>
#include <math.h>
#include <glib.h>
#include <lilv/lilv.h>
#include <gst/audio/audio.h>
#include <gst/audio/gstaudiofilter.h>
#include <gst/audio/audio-channels.h>
GST_DEBUG_CATEGORY_EXTERN (lv2_debug);
#define GST_CAT_DEFAULT lv2_debug
typedef struct _lv2_control_info
{
gchar *name;
gchar *param_name;
gfloat lowerbound, upperbound;
gfloat def;
gboolean lower, upper, samplerate;
gboolean toggled, logarithmic, integer, writable;
} lv2_control_info;
typedef struct _GstLV2Filter GstLV2Filter;
typedef struct _GstLV2FilterClass GstLV2FilterClass;
struct _GstLV2Filter
{
GstAudioFilter parent;
GstLV2 lv2;
};
struct _GstLV2FilterClass
{
GstAudioFilterClass parent_class;
GstLV2Class lv2;
};
static GstAudioFilter *parent_class = NULL;
/* preset interface */
static gchar **
gst_lv2_filter_get_preset_names (GstPreset * preset)
{
GstLV2Filter *self = (GstLV2Filter *) preset;
return gst_lv2_get_preset_names (&self->lv2, (GstObject *) self);
}
static gboolean
gst_lv2_filter_load_preset (GstPreset * preset, const gchar * name)
{
GstLV2Filter *self = (GstLV2Filter *) preset;
return gst_lv2_load_preset (&self->lv2, (GstObject *) self, name);
}
static gboolean
gst_lv2_filter_save_preset (GstPreset * preset, const gchar * name)
{
GstLV2Filter *self = (GstLV2Filter *) preset;
return gst_lv2_save_preset (&self->lv2, (GstObject *) self, name);
}
static gboolean
gst_lv2_filter_rename_preset (GstPreset * preset, const gchar * old_name,
const gchar * new_name)
{
return FALSE;
}
static gboolean
gst_lv2_filter_delete_preset (GstPreset * preset, const gchar * name)
{
GstLV2Filter *self = (GstLV2Filter *) preset;
return gst_lv2_delete_preset (&self->lv2, (GstObject *) self, name);
}
static gboolean
gst_lv2_filter_set_meta (GstPreset * preset, const gchar * name,
const gchar * tag, const gchar * value)
{
return FALSE;
}
static gboolean
gst_lv2_filter_get_meta (GstPreset * preset, const gchar * name,
const gchar * tag, gchar ** value)
{
*value = NULL;
return FALSE;
}
static void
gst_lv2_filter_preset_interface_init (gpointer g_iface, gpointer iface_data)
{
GstPresetInterface *iface = g_iface;
iface->get_preset_names = gst_lv2_filter_get_preset_names;
iface->load_preset = gst_lv2_filter_load_preset;
iface->save_preset = gst_lv2_filter_save_preset;
iface->rename_preset = gst_lv2_filter_rename_preset;
iface->delete_preset = gst_lv2_filter_delete_preset;
iface->set_meta = gst_lv2_filter_set_meta;
iface->get_meta = gst_lv2_filter_get_meta;
}
/* GObject vmethods implementation */
static void
gst_lv2_filter_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstLV2Filter *self = (GstLV2Filter *) object;
gst_lv2_object_set_property (&self->lv2, object, prop_id, value, pspec);
}
static void
gst_lv2_filter_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstLV2Filter *self = (GstLV2Filter *) object;
gst_lv2_object_get_property (&self->lv2, object, prop_id, value, pspec);
}
static void
gst_lv2_filter_finalize (GObject * object)
{
GstLV2Filter *self = (GstLV2Filter *) object;
gst_lv2_finalize (&self->lv2);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
#if 0
/* Convert an LV2 port role to a Gst channel positon
* WARNING: If the group has only a single port,
* GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER will be returned for pg:centerRole
* (which is used by LV2 for mono groups), but this is not correct. In this
* case the value must be changed to GST_AUDIO_CHANNEL_POSITION_FRONT_MONO
* (this can't be done by this function because this information isn't known
* at the time it is used).
*/
static GstAudioChannelPosition
gst_lv2_filter_role_to_position (LilvNode * role)
{
/* Front. Mono and left/right are mututally exclusive */
if (lilv_node_equals (role, center_role)) {
return GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
} else if (lilv_node_equals (role, left_role)) {
return GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
} else if (lilv_node_equals (role, right_role)) {
return GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
/* Rear. Left/right and center are mututally exclusive */
} else if (lilv_node_equals (role, rear_center_role)) {
return GST_AUDIO_CHANNEL_POSITION_REAR_CENTER;
} else if (lilv_node_equals (role, rear_left_role)) {
return GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
} else if (lilv_node_equals (role, rear_right_role)) {
return GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
/* Subwoofer/low-frequency-effects */
} else if (lilv_node_equals (role, lfe_role)) {
return GST_AUDIO_CHANNEL_POSITION_LFE1;
/* Center front speakers. Center and left/right_of_center
* are mutually exclusive */
} else if (lilv_node_equals (role, center_left_role)) {
return GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER;
} else if (lilv_node_equals (role, center_right_role)) {
return GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER;
/* sides */
} else if (lilv_node_equals (role, side_left_role)) {
return GST_AUDIO_CHANNEL_POSITION_SIDE_LEFT;
} else if (lilv_node_equals (role, side_right_role)) {
return GST_AUDIO_CHANNEL_POSITION_SIDE_RIGHT;
}
return GST_AUDIO_CHANNEL_POSITION_INVALID;
}
static GstAudioChannelPosition *
gst_lv2_filter_build_positions (GstLV2Group * group)
{
GstAudioChannelPosition *positions = NULL;
/* don't do anything for mono */
if (group->ports->len > 1) {
gint i;
positions = g_new (GstAudioChannelPosition, group->ports->len);
for (i = 0; i < group->ports->len; ++i)
positions[i] = g_array_index (group->ports, GstLV2Port, i).position;
}
return positions;
}
#endif
/* Find and return the group @a uri in @a groups, or NULL if not found */
static void
gst_lv2_filter_type_class_add_pad_templates (GstLV2FilterClass * klass)
{
GstCaps *srccaps, *sinkcaps;
GstPadTemplate *pad_template;
GstElementClass *elem_class = GST_ELEMENT_CLASS (klass);
gint in_channels = 1, out_channels = 1;
in_channels = klass->lv2.in_group.ports->len;
out_channels = klass->lv2.out_group.ports->len;
/* FIXME Implement deintereleaved audio support */
sinkcaps = gst_caps_new_simple ("audio/x-raw",
"format", G_TYPE_STRING, GST_AUDIO_NE (F32),
"channels", G_TYPE_INT, in_channels,
"rate", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"layout", G_TYPE_STRING, "interleaved", NULL);
srccaps = gst_caps_new_simple ("audio/x-raw",
"format", G_TYPE_STRING, GST_AUDIO_NE (F32),
"channels", G_TYPE_INT, out_channels,
"rate", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"layout", G_TYPE_STRING, "interleaved", NULL);
pad_template =
gst_pad_template_new (GST_BASE_TRANSFORM_SINK_NAME, GST_PAD_SINK,
GST_PAD_ALWAYS, sinkcaps);
gst_element_class_add_pad_template (elem_class, pad_template);
pad_template =
gst_pad_template_new (GST_BASE_TRANSFORM_SRC_NAME, GST_PAD_SRC,
GST_PAD_ALWAYS, srccaps);
gst_element_class_add_pad_template (elem_class, pad_template);
gst_caps_unref (sinkcaps);
gst_caps_unref (srccaps);
}
static gboolean
gst_lv2_filter_setup (GstAudioFilter * gsp, const GstAudioInfo * info)
{
GstLV2Filter *self = (GstLV2Filter *) gsp;
g_return_val_if_fail (self->lv2.activated == FALSE, FALSE);
GST_DEBUG_OBJECT (self, "instantiating the plugin at %d Hz",
GST_AUDIO_INFO_RATE (info));
if (!gst_lv2_setup (&self->lv2, GST_AUDIO_INFO_RATE (info)))
goto no_instance;
/* FIXME Handle audio channel positionning while negotiating CAPS */
#if 0
gint i;
/* set input group pad audio channel position */
for (i = 0; i < oclass->lv2.in_groups->len; ++i) {
group = &g_array_index (oclass->lv2.in_groups, GstLV2Group, i);
if (group->has_roles) {
if ((positions = gst_lv2_filter_build_positions (group))) {
if ((pad = gst_element_get_static_pad (GST_ELEMENT (gsp),
lilv_node_as_string (group->symbol)))) {
GST_INFO_OBJECT (self, "set audio channel positions on sink pad %s",
lilv_node_as_string (group->symbol));
s = gst_caps_get_structure (caps, 0);
gst_audio_set_channel_positions (s, positions);
gst_object_unref (pad);
}
g_free (positions);
positions = NULL;
}
}
}
/* set output group pad audio channel position */
for (i = 0; i < oclass->lv2.out_groups->len; ++i) {
group = &g_array_index (oclass->lv2.out_groups, GstLV2Group, i);
if (group->has_roles) {
if ((positions = gst_lv2_filter_build_positions (group))) {
if ((pad = gst_element_get_static_pad (GST_ELEMENT (gsp),
lilv_node_as_string (group->symbol)))) {
GST_INFO_OBJECT (self, "set audio channel positions on src pad %s",
lilv_node_as_string (group->symbol));
s = gst_caps_get_structure (caps, 0);
gst_audio_set_channel_positions (s, positions);
gst_object_unref (pad);
}
g_free (positions);
positions = NULL;
}
}
}
#endif
return TRUE;
no_instance:
{
GST_ERROR_OBJECT (gsp, "could not create instance");
return FALSE;
}
}
static gboolean
gst_lv2_filter_stop (GstBaseTransform * transform)
{
GstLV2Filter *lv2 = (GstLV2Filter *) transform;
return gst_lv2_cleanup (&lv2->lv2, (GstObject *) lv2);
}
static inline void
gst_lv2_filter_deinterleave_data (guint n_channels, gfloat * outdata,
guint samples, gfloat * indata)
{
guint i, j;
for (i = 0; i < n_channels; i++)
for (j = 0; j < samples; j++)
outdata[i * samples + j] = indata[j * n_channels + i];
}
static inline void
gst_lv2_filter_interleave_data (guint n_channels, gfloat * outdata,
guint samples, gfloat * indata)
{
guint i, j;
for (i = 0; i < n_channels; i++)
for (j = 0; j < samples; j++) {
outdata[j * n_channels + i] = indata[i * samples + j];
}
}
static GstFlowReturn
gst_lv2_filter_transform_data (GstLV2Filter * self,
GstMapInfo * in_map, GstMapInfo * out_map)
{
GstLV2FilterClass *klass =
(GstLV2FilterClass *) GST_AUDIO_FILTER_GET_CLASS (self);
GstLV2Class *lv2_class = &klass->lv2;
GstLV2Group *lv2_group;
GstLV2Port *lv2_port;
guint j, k, l, nframes, samples, out_samples;
gfloat *in = NULL, *out = NULL, *cv = NULL, *mem;
gfloat val;
nframes = in_map->size / sizeof (float);
/* multi channel inputs */
lv2_group = &lv2_class->in_group;
samples = nframes / lv2_group->ports->len;
in = g_new0 (gfloat, nframes);
GST_LOG_OBJECT (self, "in : samples=%u, nframes=%u, ports=%d", samples,
nframes, lv2_group->ports->len);
if (lv2_group->ports->len > 1)
gst_lv2_filter_deinterleave_data (lv2_group->ports->len, in,
samples, (gfloat *) in_map->data);
for (j = 0; j < lv2_group->ports->len; ++j) {
lv2_port = &g_array_index (lv2_group->ports, GstLV2Port, j);
lilv_instance_connect_port (self->lv2.instance, lv2_port->index,
in + (j * samples));
}
/* multi channel outputs */
lv2_group = &lv2_class->out_group;
out_samples = nframes / lv2_group->ports->len;
out = g_new0 (gfloat, samples * lv2_group->ports->len);
GST_LOG_OBJECT (self, "out: samples=%u, nframes=%u, ports=%d", out_samples,
nframes, lv2_group->ports->len);
for (j = 0; j < lv2_group->ports->len; ++j) {
lv2_port = &g_array_index (lv2_group->ports, GstLV2Port, j);
lilv_instance_connect_port (self->lv2.instance, lv2_port->index,
out + (j * out_samples));
}
/* cv ports */
cv = g_new (gfloat, samples * lv2_class->num_cv_in);
for (j = k = 0; j < lv2_class->control_in_ports->len; j++) {
lv2_port = &g_array_index (lv2_class->control_in_ports, GstLV2Port, j);
if (lv2_port->type != GST_LV2_PORT_CV)
continue;
mem = cv + (k * samples);
val = self->lv2.ports.control.in[j];
/* FIXME: use gst_control_binding_get_value_array */
for (l = 0; l < samples; l++)
mem[l] = val;
lilv_instance_connect_port (self->lv2.instance, lv2_port->index, mem);
k++;
}
lilv_instance_run (self->lv2.instance, samples);
if (lv2_group->ports->len > 1)
gst_lv2_filter_interleave_data (lv2_group->ports->len,
(gfloat *) out_map->data, out_samples, out);
g_free (out);
g_free (in);
g_free (cv);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_lv2_filter_transform_ip (GstBaseTransform * transform, GstBuffer * buf)
{
GstFlowReturn ret;
GstMapInfo map;
gst_buffer_map (buf, &map, GST_MAP_READWRITE);
ret = gst_lv2_filter_transform_data ((GstLV2Filter *) transform, &map, &map);
gst_buffer_unmap (buf, &map);
return ret;
}
static GstFlowReturn
gst_lv2_filter_transform (GstBaseTransform * transform,
GstBuffer * inbuf, GstBuffer * outbuf)
{
GstMapInfo in_map, out_map;
GstFlowReturn ret;
gst_buffer_map (inbuf, &in_map, GST_MAP_READ);
gst_buffer_map (outbuf, &out_map, GST_MAP_WRITE);
ret = gst_lv2_filter_transform_data ((GstLV2Filter *) transform,
&in_map, &out_map);
gst_buffer_unmap (inbuf, &in_map);
gst_buffer_unmap (outbuf, &out_map);
return ret;
}
static void
gst_lv2_filter_base_init (gpointer g_class)
{
GstLV2FilterClass *klass = (GstLV2FilterClass *) g_class;
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_lv2_class_init (&klass->lv2, G_TYPE_FROM_CLASS (klass));
gst_lv2_element_class_set_metadata (&klass->lv2, element_class,
"Filter/Effect/Audio/LV2");
gst_lv2_filter_type_class_add_pad_templates (klass);
}
static void
gst_lv2_filter_base_finalize (GstLV2FilterClass * lv2_class)
{
gst_lv2_class_finalize (&lv2_class->lv2);
}
static void
gst_lv2_filter_class_init (GstLV2FilterClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstBaseTransformClass *transform_class = GST_BASE_TRANSFORM_CLASS (klass);
GstAudioFilterClass *audiofilter_class = GST_AUDIO_FILTER_CLASS (klass);
GST_DEBUG ("class_init %p", klass);
gobject_class->set_property = gst_lv2_filter_set_property;
gobject_class->get_property = gst_lv2_filter_get_property;
gobject_class->finalize = gst_lv2_filter_finalize;
audiofilter_class->setup = gst_lv2_filter_setup;
transform_class->stop = gst_lv2_filter_stop;
transform_class->transform = gst_lv2_filter_transform;
transform_class->transform_ip = gst_lv2_filter_transform_ip;
gst_lv2_class_install_properties (&klass->lv2, gobject_class, 1);
}
static void
gst_lv2_filter_init (GstLV2Filter * self, GstLV2FilterClass * klass)
{
gst_lv2_init (&self->lv2, &klass->lv2);
if (!lilv_plugin_has_feature (klass->lv2.plugin, in_place_broken_pred))
gst_base_transform_set_in_place (GST_BASE_TRANSFORM (self), TRUE);
}
void
gst_lv2_filter_register_element (GstPlugin * plugin, GstStructure * lv2_meta)
{
GTypeInfo info = {
sizeof (GstLV2FilterClass),
(GBaseInitFunc) gst_lv2_filter_base_init,
(GBaseFinalizeFunc) gst_lv2_filter_base_finalize,
(GClassInitFunc) gst_lv2_filter_class_init,
NULL,
NULL,
sizeof (GstLV2Filter),
0,
(GInstanceInitFunc) gst_lv2_filter_init,
};
const gchar *type_name =
gst_structure_get_string (lv2_meta, "element-type-name");
GType element_type =
g_type_register_static (GST_TYPE_AUDIO_FILTER, type_name, &info, 0);
gboolean can_do_presets;
/* register interfaces */
gst_structure_get_boolean (lv2_meta, "can-do-presets", &can_do_presets);
if (can_do_presets) {
const GInterfaceInfo preset_interface_info = {
(GInterfaceInitFunc) gst_lv2_filter_preset_interface_init,
NULL,
NULL
};
g_type_add_interface_static (element_type, GST_TYPE_PRESET,
&preset_interface_info);
}
gst_element_register (plugin, type_name, GST_RANK_NONE, element_type);
if (!parent_class)
parent_class = g_type_class_ref (GST_TYPE_AUDIO_FILTER);
}