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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2005 Wim Taymans <wim@fluendo.com>
*
* gstsignalprocessor.h:
*
* 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.
*/
#ifndef __GST_SIGNAL_PROCESSOR_H__
#define __GST_SIGNAL_PROCESSOR_H__
#include <gst/gst.h>
G_BEGIN_DECLS
typedef enum
{
GST_SIGNAL_PROCESSOR_CLASS_FLAG_CAN_PROCESS_IN_PLACE = 1<<0
} GstSignalProcessorClassFlags;
#define GST_SIGNAL_PROCESSOR_CLASS_CAN_PROCESS_IN_PLACE(klass) \
(GST_SIGNAL_PROCESSOR_CLASS (klass)->flags & \
GST_SIGNAL_PROCESSOR_CLASS_FLAG_CAN_PROCESS_IN_PLACE)
#define GST_SIGNAL_PROCESSOR_CLASS_SET_CAN_PROCESS_IN_PLACE(klass) \
GST_SIGNAL_PROCESSOR_CLASS (klass)->flags |= \
GST_SIGNAL_PROCESSOR_CLASS_FLAG_CAN_PROCESS_IN_PLACE
typedef enum
{
GST_SIGNAL_PROCESSOR_STATE_NULL,
GST_SIGNAL_PROCESSOR_STATE_INITIALIZED,
GST_SIGNAL_PROCESSOR_STATE_RUNNING
} GstSignalProcessorState;
#define GST_TYPE_SIGNAL_PROCESSOR (gst_signal_processor_get_type())
#define GST_SIGNAL_PROCESSOR(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SIGNAL_PROCESSOR,GstSignalProcessor))
#define GST_SIGNAL_PROCESSOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SIGNAL_PROCESSOR,GstSignalProcessorClass))
#define GST_SIGNAL_PROCESSOR_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_SIGNAL_PROCESSOR,GstSignalProcessorClass))
#define GST_IS_SIGNAL_PROCESSOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SIGNAL_PROCESSOR))
#define GST_IS_SIGNAL_PROCESSOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SIGNAL_PROCESSOR))
#define GST_SIGNAL_PROCESSOR_IS_INITIALIZED(obj) \
(GST_SIGNAL_PROCESSOR (obj)->state >= GST_SIGNAL_PROCESSOR_STATE_INITIALIZED)
#define GST_SIGNAL_PROCESSOR_IS_RUNNING(obj) \
(GST_SIGNAL_PROCESSOR (obj)->state == GST_SIGNAL_PROCESSOR_STATE_RUNNING)
typedef struct _GstSignalProcessor GstSignalProcessor;
typedef struct _GstSignalProcessorClass GstSignalProcessorClass;
struct _GstSignalProcessor {
GstElement element;
GstCaps *caps;
guint sample_rate;
GstSignalProcessorState state;
GstFlowReturn flow_state;
GstActivateMode mode;
guint pending_in;
guint pending_out;
gfloat *control_in;
gfloat **audio_in;
gfloat *control_out;
gfloat **audio_out;
};
struct _GstSignalProcessorClass {
GstElementClass parent_class;
/*< public >*/
guint num_control_in;
guint num_audio_in;
guint num_control_out;
guint num_audio_out;
guint flags;
/* virtual methods for subclasses */
gboolean (*setup) (GstSignalProcessor *self, guint sample_rate);
gboolean (*start) (GstSignalProcessor *self);
void (*stop) (GstSignalProcessor *self);
void (*cleanup) (GstSignalProcessor *self);
void (*process) (GstSignalProcessor *self, guint num_frames);
gboolean (*event) (GstSignalProcessor *self, GstEvent *event);
};
GType gst_signal_processor_get_type (void);
void gst_signal_processor_class_add_pad_template (GstSignalProcessorClass *klass,
const gchar *name, GstPadDirection direction, guint index);
G_END_DECLS
#endif /* __GST_SIGNAL_PROCESSOR_H__ */
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