mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-04 05:35:53 +00:00
6c3416a44d
Original commit message from CVS: * gst/base/gstbasesink.c: (gst_base_sink_handle_object): * gst/base/gstbasetransform.c: (gst_base_transform_transform_size), fix up some debugging (gst_base_transform_get_unit_size), (gst_base_transform_buffer_alloc), (gst_base_transform_event), (gst_base_transform_handle_buffer): * gst/base/gstbasetransform.h: handle and store timed NEWSEGMENT events so that subclasses that calculate time by counting samples have a segment_start time they need to add to their timestamps - see audioresample
144 lines
5.2 KiB
C
144 lines
5.2 KiB
C
/* GStreamer
|
|
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
|
|
* 2005 Wim Taymans <wim@fluendo.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., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifndef __GST_BASE_TRANSFORM_H__
|
|
#define __GST_BASE_TRANSFORM_H__
|
|
|
|
#include <gst/gst.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_BASE_TRANSFORM (gst_base_transform_get_type())
|
|
#define GST_BASE_TRANSFORM(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BASE_TRANSFORM,GstBaseTransform))
|
|
#define GST_BASE_TRANSFORM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BASE_TRANSFORM,GstBaseTransformClass))
|
|
#define GST_BASE_TRANSFORM_GET_CLASS(obj) \
|
|
(G_TYPE_INSTANCE_GET_CLASS ((obj),GST_TYPE_BASE_TRANSFORM,GstBaseTransformClass))
|
|
#define GST_IS_BASE_TRANSFORM(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BASE_TRANSFORM))
|
|
#define GST_IS_BASE_TRANSFORM_CLASS(obj)(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BASE_TRANSFORM))
|
|
|
|
/* the names of the templates for the sink and source pads */
|
|
#define GST_BASE_TRANSFORM_SINK_NAME "sink"
|
|
#define GST_BASE_TRANSFORM_SRC_NAME "src"
|
|
|
|
typedef struct _GstBaseTransform GstBaseTransform;
|
|
typedef struct _GstBaseTransformClass GstBaseTransformClass;
|
|
|
|
struct _GstBaseTransform {
|
|
GstElement element;
|
|
|
|
/* source and sink pads */
|
|
GstPad *sinkpad;
|
|
GstPad *srcpad;
|
|
|
|
gboolean passthrough;
|
|
|
|
gboolean in_place;
|
|
|
|
GstCaps *cache_caps1;
|
|
guint cache_caps1_size;
|
|
GstCaps *cache_caps2;
|
|
guint cache_caps2_size;
|
|
|
|
gboolean delay_configure;
|
|
gboolean pending_configure;
|
|
|
|
gboolean have_newsegment;
|
|
|
|
gdouble segment_rate;
|
|
gint64 segment_start;
|
|
gint64 segment_stop;
|
|
gint64 segment_base;
|
|
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
/**
|
|
* GstBaseTransformClass::transform_caps:
|
|
* @direction: the pad direction
|
|
* @caps: the caps
|
|
*
|
|
* This method should answer the question "given this pad, and given these
|
|
* caps, what caps would you allow on the other pad inside your element ?"
|
|
*/
|
|
struct _GstBaseTransformClass {
|
|
GstElementClass parent_class;
|
|
|
|
/*< public >*/
|
|
/* virtual methods for subclasses */
|
|
|
|
/* given the (non-)fixed simple caps on the pad in the given direction,
|
|
* what can I do on the other pad ? */
|
|
GstCaps* (*transform_caps) (GstBaseTransform *trans,
|
|
GstPadDirection direction,
|
|
GstCaps *caps);
|
|
|
|
/* given caps on one pad, how would you fixate caps on the other pad ? */
|
|
void (*fixate_caps) (GstBaseTransform *trans,
|
|
GstPadDirection direction, GstCaps *caps,
|
|
GstCaps *othercaps);
|
|
|
|
/* given the size of a buffer in the given direction with the given caps,
|
|
* calculate the byte size of an buffer on the other side with the given
|
|
* other caps; the default
|
|
* implementation uses get_size and keeps the number of units the same */
|
|
gboolean (*transform_size) (GstBaseTransform *trans,
|
|
GstPadDirection direction,
|
|
GstCaps *caps, guint size,
|
|
GstCaps *othercaps, guint *othersize);
|
|
|
|
/* get the byte size of one unit for a given caps.
|
|
* Always needs to be implemented if the transform is not in-place. */
|
|
gboolean (*get_unit_size) (GstBaseTransform *trans, GstCaps *caps,
|
|
guint *size);
|
|
|
|
/* notify the subclass of new caps */
|
|
gboolean (*set_caps) (GstBaseTransform *trans, GstCaps *incaps,
|
|
GstCaps *outcaps);
|
|
|
|
/* start and stop processing, ideal for opening/closing the resource */
|
|
gboolean (*start) (GstBaseTransform *trans);
|
|
gboolean (*stop) (GstBaseTransform *trans);
|
|
|
|
gboolean (*event) (GstBaseTransform *trans, GstEvent *event);
|
|
|
|
/* transform one incoming buffer to one outgoing buffer.
|
|
* Always needs to be implemented.
|
|
* transform function is allowed to change size/timestamp/duration of
|
|
* the outgoing buffer. */
|
|
GstFlowReturn (*transform) (GstBaseTransform *trans, GstBuffer *inbuf,
|
|
GstBuffer *outbuf);
|
|
|
|
/* transform a buffer inplace */
|
|
GstFlowReturn (*transform_ip) (GstBaseTransform *trans, GstBuffer *buf);
|
|
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
void gst_base_transform_set_passthrough (GstBaseTransform *trans, gboolean passthrough);
|
|
gboolean gst_base_transform_is_passthrough (GstBaseTransform *trans);
|
|
|
|
GType gst_base_transform_get_type (void);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_BASE_TRANSFORM_H__ */
|