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/* GStreamer
* Copyright (C) 2016 Thibault Saunier <thibault.saunier@collabora.com>
* 2016 Stefan Sauer <ensonic@users.sf.net>
*
* gstlv2utils.h: Header for LV2 plugin utils
*
* 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.
*/
#ifndef __GST_LV2_UTILS_H__
#define __GST_LV2_UTILS_H__
#include <gst/gst.h>
#include <gst/audio/audio.h>
#include <gst/audio/audio-channels.h>
#include <lilv/lilv.h>
G_BEGIN_DECLS
typedef struct _GstLV2Group GstLV2Group;
typedef struct _GstLV2Port GstLV2Port;
typedef struct _GstLV2 GstLV2;
typedef struct _GstLV2Class GstLV2Class;
struct _GstLV2Group
{
gchar *uri; /**< RDF resource (URI or blank node) */
guint pad; /**< Gst pad index */
gchar *symbol; /**< Gst pad name / LV2 group symbol */
GArray *ports; /**< Array of GstLV2Port */
/* FIXME: not set as of now */
gboolean has_roles; /**< TRUE iff all ports have a known role */
};
typedef enum {
GST_LV2_PORT_AUDIO = 0,
GST_LV2_PORT_CONTROL,
GST_LV2_PORT_CV
} GstLV2PortType;
struct _GstLV2Port
{
gint index; /**< LV2 port index (on LV2 plugin) */
GstLV2PortType type; /**< Port type */
/**< Gst pad index (iff not part of a group), only for audio ports */
gint pad;
/* FIXME: not set as of now */
LilvNode *role; /**< Channel position / port role */
GstAudioChannelPosition position; /**< Channel position */
};
struct _GstLV2
{
GstLV2Class *klass;
LilvInstance *instance;
GHashTable *presets;
gboolean activated;
unsigned long rate;
struct
{
struct
{
gfloat *in;
gfloat *out;
} control;
} ports;
};
struct _GstLV2Class
{
guint properties;
const LilvPlugin *plugin;
GHashTable *sym_to_name;
gint num_control_in, num_control_out;
gint num_cv_in, num_cv_out;
GstLV2Group in_group; /**< Array of GstLV2Group */
GstLV2Group out_group; /**< Array of GstLV2Group */
GArray *control_in_ports; /**< Array of GstLV2Port */
GArray *control_out_ports; /**< Array of GstLV2Port */
};
gboolean gst_lv2_check_required_features (const LilvPlugin * lv2plugin);
void gst_lv2_host_init (void);
gchar **gst_lv2_get_preset_names (GstLV2 * lv2, GstObject * obj);
gboolean gst_lv2_load_preset (GstLV2 * lv2, GstObject * obj, const gchar * name);
gboolean gst_lv2_save_preset (GstLV2 * lv2, GstObject * obj, const gchar * name);
gboolean gst_lv2_delete_preset (GstLV2 * lv2, GstObject * obj, const gchar * name);
void gst_lv2_init (GstLV2 * lv2, GstLV2Class * lv2_class);
void gst_lv2_finalize (GstLV2 * lv2);
gboolean gst_lv2_setup (GstLV2 * lv2, unsigned long rate);
gboolean gst_lv2_cleanup (GstLV2 * lv2, GstObject *obj);
void gst_lv2_object_set_property (GstLV2 * lv2, GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
void gst_lv2_object_get_property (GstLV2 * lv2, GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
void gst_lv2_class_install_properties (GstLV2Class * lv2_class,
GObjectClass * object_class, guint offset);
void gst_lv2_element_class_set_metadata (GstLV2Class * lv2_class,
GstElementClass * elem_class, const gchar * lv2_class_tags);
void gst_lv2_class_init (GstLV2Class * lv2_class, GType type);
void gst_lv2_class_finalize (GstLV2Class * lv2_class);
G_END_DECLS
#endif /* __GST_LV2_UTILS_H__ */
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