mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-26 19:51:11 +00:00
8b29840f55
Original commit message from CVS: 1. Add more warnings for the gst core only. Various trival fixes to quiet the warnings. 2. Fix GstBufferCopyFunc prototype. 3. Re-apply the reverted type!=0 assertion in gst_elementfactory_new.
413 lines
14 KiB
C
413 lines
14 KiB
C
/* GStreamer
|
|
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
|
|
* 2000 Wim Taymans <wim.taymans@chello.be>
|
|
*
|
|
* gstpad.h: Header for GstPad object
|
|
*
|
|
* 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_PAD_H__
|
|
#define __GST_PAD_H__
|
|
|
|
#include <parser.h> // NOTE: This is xml-config's fault
|
|
|
|
// Include compatability defines: if libxml hasn't already defined these,
|
|
// we have an old version 1.x
|
|
#ifndef xmlChildrenNode
|
|
#define xmlChildrenNode childs
|
|
#define xmlRootNode root
|
|
#endif
|
|
|
|
#include <gst/gstobject.h>
|
|
#include <gst/gstbuffer.h>
|
|
#include <gst/cothreads.h>
|
|
#include <gst/gstcaps.h>
|
|
#include <gst/gstevent.h>
|
|
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif /* __cplusplus */
|
|
|
|
|
|
#define GST_TYPE_PAD (gst_pad_get_type ())
|
|
#define GST_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_PAD, GstPad))
|
|
#define GST_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_PAD, GstPadClass))
|
|
#define GST_IS_PAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_PAD))
|
|
#define GST_IS_PAD_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_PAD))
|
|
|
|
#define GST_TYPE_REAL_PAD (gst_real_pad_get_type ())
|
|
#define GST_REAL_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_REAL_PAD, GstRealPad))
|
|
#define GST_REAL_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_REAL_PAD, GstRealPadClass))
|
|
#define GST_IS_REAL_PAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_REAL_PAD))
|
|
#define GST_IS_REAL_PAD_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_REAL_PAD))
|
|
|
|
#define GST_TYPE_GHOST_PAD (gst_ghost_pad_get_type ())
|
|
#define GST_GHOST_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_GHOST_PAD, GstGhostPad))
|
|
#define GST_GHOST_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_GHOST_PAD, GstGhostPadClass))
|
|
#define GST_IS_GHOST_PAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_GHOST_PAD))
|
|
#define GST_IS_GHOST_PAD_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_GHOST_PAD))
|
|
|
|
|
|
//typedef struct _GstPad GstPad;
|
|
//typedef struct _GstPadClass GstPadClass;
|
|
typedef struct _GstRealPad GstRealPad;
|
|
typedef struct _GstRealPadClass GstRealPadClass;
|
|
typedef struct _GstGhostPad GstGhostPad;
|
|
typedef struct _GstGhostPadClass GstGhostPadClass;
|
|
//typedef struct _GstPadTemplate GstPadTemplate;
|
|
//typedef struct _GstPadTemplateClass GstPadTemplateClass;
|
|
|
|
|
|
typedef enum {
|
|
GST_REGION_VOID,
|
|
GST_REGION_OFFSET_LEN,
|
|
GST_REGION_TIME_LEN,
|
|
} GstRegionType;
|
|
|
|
typedef enum {
|
|
GST_PAD_NEGOTIATE_FAIL,
|
|
GST_PAD_NEGOTIATE_AGREE,
|
|
GST_PAD_NEGOTIATE_TRY,
|
|
} GstPadNegotiateReturn;
|
|
|
|
|
|
/* this defines the functions used to chain buffers
|
|
* pad is the sink pad (so the same chain function can be used for N pads)
|
|
* buf is the buffer being passed */
|
|
typedef void (*GstPadChainFunction) (GstPad *pad,GstBuffer *buf);
|
|
typedef GstBuffer* (*GstPadGetFunction) (GstPad *pad);
|
|
typedef gboolean (*GstPadEventFunction) (GstPad *pad, GstEventType event, gint64 timestamp, guint32 data);
|
|
|
|
typedef GstBuffer* (*GstPadGetRegionFunction) (GstPad *pad, GstRegionType type, guint64 offset, guint64 len);
|
|
typedef GstBuffer* (*GstPadPullRegionFunction) (GstPad *pad, GstRegionType type, guint64 offset, guint64 len);
|
|
typedef GstPadNegotiateReturn (*GstPadNegotiateFunction) (GstPad *pad, GstCaps **caps, gpointer *data);
|
|
typedef void (*GstPadNewCapsFunction) (GstPad *pad, GstCaps *caps);
|
|
typedef GstBufferPool* (*GstPadBufferPoolFunction) (GstPad *pad);
|
|
|
|
typedef enum {
|
|
GST_PAD_UNKNOWN,
|
|
GST_PAD_SRC,
|
|
GST_PAD_SINK,
|
|
} GstPadDirection;
|
|
|
|
typedef enum {
|
|
GST_PAD_DISABLED = GST_OBJECT_FLAG_LAST,
|
|
GST_PAD_EOS,
|
|
|
|
GST_PAD_FLAG_LAST = GST_OBJECT_FLAG_LAST + 4,
|
|
} GstPadFlags;
|
|
|
|
struct _GstPad {
|
|
GstObject object;
|
|
|
|
gpointer element_private;
|
|
|
|
GstPadTemplate *padtemplate; /* the template for this pad */
|
|
};
|
|
|
|
struct _GstPadClass {
|
|
GstObjectClass parent_class;
|
|
};
|
|
|
|
struct _GstRealPad {
|
|
GstPad pad;
|
|
|
|
GstCaps *caps;
|
|
GstPadDirection direction;
|
|
|
|
cothread_state *threadstate;
|
|
|
|
GstRealPad *peer;
|
|
|
|
GstBuffer *bufpen;
|
|
GstRegionType regiontype;
|
|
guint64 offset;
|
|
guint64 len;
|
|
|
|
GstSchedule *sched;
|
|
|
|
GstPadChainFunction chainfunc;
|
|
GstPadChainFunction chainhandler;
|
|
GstPadGetFunction getfunc;
|
|
GstPadGetFunction gethandler;
|
|
|
|
GstPadEventFunction eventfunc;
|
|
GstPadEventFunction eventhandler;
|
|
|
|
GstPadGetRegionFunction getregionfunc;
|
|
GstPadPullRegionFunction pullregionfunc;
|
|
|
|
GstPadNegotiateFunction negotiatefunc;
|
|
GstPadNewCapsFunction newcapsfunc;
|
|
GstPadBufferPoolFunction bufferpoolfunc;
|
|
|
|
GList *ghostpads;
|
|
};
|
|
|
|
struct _GstRealPadClass {
|
|
GstPadClass parent_class;
|
|
|
|
/* signal callbacks */
|
|
void (*set_active) (GstPad *pad, gboolean active);
|
|
void (*caps_changed) (GstPad *pad, GstCaps *newcaps);
|
|
void (*caps_nego_failed) (GstPad *pad);
|
|
void (*connected) (GstPad *pad, GstPad *peer);
|
|
void (*disconnected) (GstPad *pad, GstPad *peer);
|
|
|
|
void (*eos) (GstPad *pad);
|
|
};
|
|
|
|
struct _GstGhostPad {
|
|
GstPad pad;
|
|
|
|
GstRealPad *realpad;
|
|
};
|
|
|
|
struct _GstGhostPadClass {
|
|
GstPadClass parent_class;
|
|
};
|
|
|
|
|
|
/***** helper macros *****/
|
|
/* GstPad */
|
|
#define GST_PAD_NAME(pad) (GST_OBJECT_NAME(pad))
|
|
#define GST_PAD_PARENT(pad) ((GstElement *)(GST_OBJECT_PARENT(pad)))
|
|
#define GST_PAD_ELEMENT_PRIVATE(pad) (((GstPad *)(pad))->element_private)
|
|
#define GST_PAD_PADTEMPLATE(pad) (((GstPad *)(pad))->padtemplate)
|
|
|
|
/* GstRealPad */
|
|
#define GST_RPAD_DIRECTION(pad) (((GstRealPad *)(pad))->direction)
|
|
#define GST_RPAD_CAPS(pad) (((GstRealPad *)(pad))->caps)
|
|
#define GST_RPAD_PEER(pad) (((GstRealPad *)(pad))->peer)
|
|
#define GST_RPAD_BUFPEN(pad) (((GstRealPad *)(pad))->bufpen)
|
|
#define GST_RPAD_SCHED(pad) (((GstRealPad *)(pad))->sched)
|
|
#define GST_RPAD_CHAINFUNC(pad) (((GstRealPad *)(pad))->chainfunc)
|
|
#define GST_RPAD_CHAINHANDLER(pad) (((GstRealPad *)(pad))->chainhandler)
|
|
#define GST_RPAD_GETFUNC(pad) (((GstRealPad *)(pad))->getfunc)
|
|
#define GST_RPAD_GETHANDLER(pad) (((GstRealPad *)(pad))->gethandler)
|
|
#define GST_RPAD_EVENTFUNC(pad) (((GstRealPad *)(pad))->eventfunc)
|
|
#define GST_RPAD_EVENTHANDLER(pad) (((GstRealPad *)(pad))->eventhandler)
|
|
|
|
#define GST_RPAD_GETREGIONFUNC(pad) (((GstRealPad *)(pad))->getregionfunc)
|
|
#define GST_RPAD_PULLREGIONFUNC(pad) (((GstRealPad *)(pad))->pullregionfunc)
|
|
|
|
#define GST_RPAD_NEGOTIATEFUNC(pad) (((GstRealPad *)(pad))->negotiatefunc)
|
|
#define GST_RPAD_NEWCAPSFUNC(pad) (((GstRealPad *)(pad))->newcapsfunc)
|
|
#define GST_RPAD_BUFFERPOOLFUNC(pad) (((GstRealPad *)(pad))->bufferpoolfunc)
|
|
|
|
#define GST_RPAD_REGIONTYPE(pad) (((GstRealPad *)(pad))->regiontype)
|
|
#define GST_RPAD_OFFSET(pad) (((GstRealPad *)(pad))->offset)
|
|
#define GST_RPAD_LEN(pad) (((GstRealPad *)(pad))->len)
|
|
|
|
/* GstGhostPad */
|
|
#define GST_GPAD_REALPAD(pad) (((GstGhostPad *)(pad))->realpad)
|
|
|
|
/* Generic */
|
|
#define GST_PAD_REALIZE(pad) (GST_IS_REAL_PAD(pad) ? ((GstRealPad *)(pad)) : GST_GPAD_REALPAD(pad))
|
|
#define GST_PAD_DIRECTION(pad) GST_RPAD_DIRECTION(GST_PAD_REALIZE(pad))
|
|
#define GST_PAD_CAPS(pad) GST_RPAD_CAPS(GST_PAD_REALIZE(pad))
|
|
#define GST_PAD_PEER(pad) GST_RPAD_PEER(GST_PAD_REALIZE(pad))
|
|
|
|
/* Some check functions (unused?) */
|
|
#define GST_PAD_CONNECTED(pad) (GST_PAD_PEER(pad) != NULL)
|
|
#define GST_PAD_CAN_PULL(pad) (GST_IS_REAL_PAD(pad) && GST_REAL_PAD(pad)->gethandler != NULL)
|
|
|
|
|
|
/***** PadTemplate *****/
|
|
#define GST_TYPE_PADTEMPLATE (gst_padtemplate_get_type ())
|
|
#define GST_PADTEMPLATE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_PADTEMPLATE,GstPadTemplate))
|
|
#define GST_PADTEMPLATE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_PADTEMPLATE,GstPadTemplateClass))
|
|
#define GST_IS_PADTEMPLATE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_PADTEMPLATE))
|
|
#define GST_IS_PADTEMPLATE_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_PADTEMPLATE))
|
|
|
|
typedef enum {
|
|
GST_PAD_ALWAYS,
|
|
GST_PAD_SOMETIMES,
|
|
GST_PAD_REQUEST,
|
|
} GstPadPresence;
|
|
|
|
#define GST_PADTEMPLATE_NAME_TEMPLATE(templ) (((GstPadTemplate *)(templ))->name_template)
|
|
#define GST_PADTEMPLATE_DIRECTION(templ) (((GstPadTemplate *)(templ))->direction)
|
|
#define GST_PADTEMPLATE_PRESENCE(templ) (((GstPadTemplate *)(templ))->presence)
|
|
#define GST_PADTEMPLATE_CAPS(templ) (((GstPadTemplate *)(templ))->caps)
|
|
|
|
struct _GstPadTemplate {
|
|
GstObject object;
|
|
|
|
gchar *name_template;
|
|
GstPadDirection direction;
|
|
GstPadPresence presence;
|
|
GstCaps *caps;
|
|
};
|
|
|
|
struct _GstPadTemplateClass {
|
|
GstObjectClass parent_class;
|
|
|
|
/* signal callbacks */
|
|
void (*pad_created) (GstPadTemplate *templ, GstPad *pad);
|
|
};
|
|
|
|
#define GST_PADTEMPLATE_NEW(padname, dir, pres, a...) \
|
|
gst_padtemplate_new ( \
|
|
padname, \
|
|
dir, \
|
|
pres, \
|
|
a , \
|
|
NULL)
|
|
|
|
#define GST_PADTEMPLATE_FACTORY(name, padname, dir, pres, a...) \
|
|
static GstPadTemplate* \
|
|
name (void) \
|
|
{ \
|
|
static GstPadTemplate *templ = NULL; \
|
|
if (!templ) { \
|
|
templ = GST_PADTEMPLATE_NEW ( \
|
|
padname, \
|
|
dir, \
|
|
pres, \
|
|
a ); \
|
|
} \
|
|
return templ; \
|
|
}
|
|
|
|
#define GST_PADTEMPLATE_GET(fact) (fact)()
|
|
|
|
GType gst_pad_get_type (void);
|
|
GType gst_real_pad_get_type (void);
|
|
GType gst_ghost_pad_get_type (void);
|
|
|
|
GstPad* gst_pad_new (gchar *name, GstPadDirection direction);
|
|
#define gst_pad_destroy(pad) gst_object_destroy (GST_OBJECT (pad))
|
|
GstPad* gst_pad_new_from_template (GstPadTemplate *templ, gchar *name);
|
|
|
|
GstPadDirection gst_pad_get_direction (GstPad *pad);
|
|
|
|
void gst_pad_set_chain_function (GstPad *pad, GstPadChainFunction chain);
|
|
void gst_pad_set_get_function (GstPad *pad, GstPadGetFunction get);
|
|
void gst_pad_set_event_function (GstPad *pad, GstPadEventFunction event);
|
|
|
|
void gst_pad_set_getregion_function (GstPad *pad, GstPadGetRegionFunction getregion);
|
|
|
|
void gst_pad_set_negotiate_function (GstPad *pad, GstPadNegotiateFunction nego);
|
|
void gst_pad_set_newcaps_function (GstPad *pad, GstPadNewCapsFunction newcaps);
|
|
void gst_pad_set_bufferpool_function (GstPad *pad, GstPadBufferPoolFunction bufpool);
|
|
|
|
gboolean gst_pad_set_caps (GstPad *pad, GstCaps *caps);
|
|
GstCaps* gst_pad_get_caps (GstPad *pad);
|
|
GstCaps* gst_pad_get_padtemplate_caps (GstPad *pad);
|
|
gboolean gst_pad_check_compatibility (GstPad *srcpad, GstPad *sinkpad);
|
|
|
|
void gst_pad_set_element_private (GstPad *pad, gpointer priv);
|
|
gpointer gst_pad_get_element_private (GstPad *pad);
|
|
|
|
void gst_pad_set_name (GstPad *pad, const gchar *name);
|
|
const gchar* gst_pad_get_name (GstPad *pad);
|
|
|
|
void gst_pad_set_parent (GstPad *pad, GstObject *parent);
|
|
GstElement* gst_pad_get_parent (GstPad *pad);
|
|
GstElement* gst_pad_get_real_parent (GstPad *pad);
|
|
|
|
void gst_pad_set_sched (GstPad *pad, GstSchedule *sched);
|
|
GstSchedule* gst_pad_get_sched (GstPad *pad);
|
|
|
|
void gst_pad_add_ghost_pad (GstPad *pad, GstPad *ghostpad);
|
|
void gst_pad_remove_ghost_pad (GstPad *pad, GstPad *ghostpad);
|
|
GList* gst_pad_get_ghost_pad_list (GstPad *pad);
|
|
|
|
GstPadTemplate* gst_pad_get_padtemplate (GstPad *pad);
|
|
|
|
GstPad* gst_pad_get_peer (GstPad *pad);
|
|
|
|
GstBufferPool* gst_pad_get_bufferpool (GstPad *pad);
|
|
|
|
gboolean gst_pad_try_connect (GstPad *srcpad, GstPad *sinkpad);
|
|
void gst_pad_connect (GstPad *srcpad, GstPad *sinkpad);
|
|
void gst_pad_disconnect (GstPad *srcpad, GstPad *sinkpad);
|
|
|
|
gboolean gst_pad_renegotiate (GstPad *pad);
|
|
GstPadNegotiateReturn gst_pad_negotiate_proxy (GstPad *srcpad, GstPad *destpad, GstCaps **caps);
|
|
|
|
#if 1
|
|
void gst_pad_push (GstPad *pad, GstBuffer *buf);
|
|
#else
|
|
#define gst_pad_push(pad,buf) G_STMT_START{ \
|
|
if (((GstRealPad *)(pad))->peer->chainhandler) \
|
|
(((GstRealPad *)(pad))->peer->chainhandler)((GstPad *)(((GstRealPad *)(pad))->peer),(buf)); \
|
|
}G_STMT_END
|
|
#endif
|
|
#if 1
|
|
GstBuffer* gst_pad_pull (GstPad *pad);
|
|
GstBuffer* gst_pad_pullregion (GstPad *pad, GstRegionType type, guint64 offset, guint64 len);
|
|
#else
|
|
#define gst_pad_pull(pad) \
|
|
( (((GstRealPad *)(pad))->peer->gethandler) ? \
|
|
(((GstRealPad *)(pad))->peer->gethandler)((GstPad *)(((GstRealPad *)(pad))->peer)) : \
|
|
NULL )
|
|
#define gst_pad_pullregion(pad,type,offset,len) \
|
|
( (((GstRealPad *)(pad))->peer->pullregionfunc) ? \
|
|
(((GstRealPad *)(pad))->peer->pullregionfunc)((GstPad *)(((GstRealPad *)(pad))->peer),(type),(offset),(len)) : \
|
|
NULL )
|
|
#endif
|
|
|
|
#if 1
|
|
gboolean gst_pad_event (GstPad *pad, GstEventType event, gint64 timestamp, guint32 data);
|
|
#else
|
|
#define gst_pad_event(pad,event,timestamp,data) G_STMT_START{ \
|
|
( (((GstRealPad *)(pad))->peer->eventhandler) ? \
|
|
(((GstRealPad *)(pad))->peer->eventhandler)((GstPad *)(((GstRealPad *)(pad))->peer),(event),(timestamp),(data)) : \
|
|
FALSE )
|
|
}G_STMT_END
|
|
#endif
|
|
|
|
|
|
GstBuffer* gst_pad_peek (GstPad *pad);
|
|
GstPad* gst_pad_select (GList *padlist);
|
|
GstPad* gst_pad_selectv (GstPad *pad, ...);
|
|
|
|
void gst_pad_load_and_connect (xmlNodePtr self, GstObject *parent);
|
|
|
|
|
|
/* ghostpads */
|
|
GstPad* gst_ghost_pad_new (gchar *name,GstPad *pad);
|
|
|
|
|
|
/* templates and factories */
|
|
GType gst_padtemplate_get_type (void);
|
|
|
|
GstPadTemplate* gst_padtemplate_new (gchar *name_template,
|
|
GstPadDirection direction, GstPadPresence presence,
|
|
GstCaps *caps, ...);
|
|
|
|
GstCaps* gst_padtemplate_get_caps (GstPadTemplate *templ);
|
|
GstCaps* gst_padtemplate_get_caps_by_name (GstPadTemplate *templ, const gchar *name);
|
|
|
|
xmlNodePtr gst_padtemplate_save_thyself (GstPadTemplate *templ, xmlNodePtr parent);
|
|
GstPadTemplate* gst_padtemplate_load_thyself (xmlNodePtr parent);
|
|
|
|
xmlNodePtr gst_pad_ghost_save_thyself (GstPad *pad,
|
|
GstElement *bin,
|
|
xmlNodePtr parent);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif /* __cplusplus */
|
|
|
|
|
|
#endif /* __GST_PAD_H__ */
|
|
|