diff options
Diffstat (limited to 'gst-libs/gst/signalprocessor/gstsignalprocessor.h')
-rw-r--r-- | gst-libs/gst/signalprocessor/gstsignalprocessor.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/gst-libs/gst/signalprocessor/gstsignalprocessor.h b/gst-libs/gst/signalprocessor/gstsignalprocessor.h new file mode 100644 index 00000000..f9fac73f --- /dev/null +++ b/gst-libs/gst/signalprocessor/gstsignalprocessor.h @@ -0,0 +1,124 @@ +/* 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; + + /* pending inputs before processing can take place */ + guint pending_in; + /* panding outputs to be filled */ + 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__ */ |