da03fde054
Original commit message from CVS: WARNING: Don't grab this updated unless you're really, REALLY sure. WARNING: Wait for the next one. Whole lotta changes here, including a few random bits: examples/*/Makefile: updated to use `libtool gcc`, not just `gcc` gst/ gstbuffer.h: updated to new flag style gst.c, gstdebug.h: added new debugging for function ptrs gstpipeline.c: set type of parent_class to the class, not the object gstthread.c: ditto plugins/ cdparanoia/cdparanoia.c: added an argument type, updated some defaults cobin/spindentity.c: updated to new do/while loopfunction style mp3encode/lame/gstlame.c: argument types, whole lotta lame options tests/: various changes Now, for the big changes: Once again, the scheduling system has changed. And once again, it broke a whole bunch of things. The gist of the change is that there is now a function pointer for gst_pad_push and gst_pad_pull, instead of a hard-wired function. Well, currently they are functions, but that's for debugging purposes only, they just call the function pointer after spewing lots of DEBUG(). This changed the GstPad structure a bit, and the GstPad API as well. Where elements used to provide chain() and pull() functions, they provide chain() and get() functions. gst_pad_set_pull[region]_function has been changed to get_pad_set_get[region]_function. This means all the elements out there that used to have pull functions need to be updated. The calls to that function have been changed in the normal elements, but the names of the functions passed is still _pull[region](), which is an aesthetic issue more than anything. As for what doesn't work yet, just about anything dealing with Connections is hosed, meaning threaded stuff won't work. This will be fixed about 12 hours from now, after I've slept, etc. The simplefake.c test works in both cothreaded and chained cases, but not much else will work due to the Connection problem. Needless to say, don't grab this unless you *need* these features *now*, else wait to update this stuff until tomorrow. I'm going to sleep now.
205 lines
6.4 KiB
C
205 lines
6.4 KiB
C
/* Gnome-Streamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_PAD_H__
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#define __GST_PAD_H__
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#include <gnome-xml/parser.h>
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#include <gst/gstobject.h>
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#include <gst/gstbuffer.h>
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#include <gst/cothreads.h>
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#include <gst/gstcaps.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define GST_TYPE_PAD (gst_pad_get_type ())
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#define GST_PAD(obj) (GTK_CHECK_CAST ((obj), GST_TYPE_PAD,GstPad))
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#define GST_PAD_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GST_TYPE_PAD,GstPadClass))
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#define GST_IS_PAD(obj) (GTK_CHECK_TYPE ((obj), GST_TYPE_PAD))
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#define GST_IS_PAD_CLASS(obj) (GTK_CHECK_CLASS_TYPE ((klass), GST_TYPE_PAD))
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// quick test to see if the pad is connected
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#define GST_PAD_CONNECTED(pad) ((pad) && (pad)->peer != NULL)
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#define GST_PAD_CAN_PULL(pad) ((pad) && (pad)->pullfunc != NULL)
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typedef struct _GstPad GstPad;
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typedef struct _GstPadClass GstPadClass;
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/* this defines the functions used to chain buffers
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* pad is the sink pad (so the same chain function can be used for N pads)
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* buf is the buffer being passed */
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typedef void (*GstPadChainFunction) (GstPad *pad,GstBuffer *buf);
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typedef void (*GstPadGetFunction) (GstPad *pad);
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typedef void (*GstPadGetRegionFunction) (GstPad *pad, gulong offset, gulong size);
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typedef void (*GstPadQoSFunction) (GstPad *pad, glong qos_message);
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typedef void (*GstPadPushFunction) (GstPad *pad, GstBuffer *buf);
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typedef GstBuffer *(*GstPadPullFunction) (GstPad *pad);
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typedef GstBuffer *(*GstPadPullRegionFunction) (GstPad *pad, gulong offset, gulong size);
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typedef enum {
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GST_PAD_UNKNOWN,
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GST_PAD_SRC,
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GST_PAD_SINK,
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} GstPadDirection;
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typedef enum {
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GST_PAD_DISABLED = GST_OBJECT_FLAG_LAST,
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GST_PAD_EOS,
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GST_PAD_FLAG_LAST = GST_OBJECT_FLAG_LAST + 4,
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} GstPadFlags;
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struct _GstPad {
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GstObject object;
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gchar *name;
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GstCaps *caps;
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cothread_state *threadstate;
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GstPadDirection direction;
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GstPad *peer;
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GstBuffer *bufpen;
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GstPadChainFunction chainfunc;
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GstPadGetFunction getfunc;
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GstPadGetRegionFunction getregionfunc;
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GstPadQoSFunction qosfunc;
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GstPadPushFunction pushfunc;
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GstPadPullFunction pullfunc;
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GstPadPullRegionFunction pullregionfunc;
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GstObject *parent;
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GList *ghostparents;
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};
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struct _GstPadClass {
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GstObjectClass parent_class;
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/* signal callbacks */
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void (*set_active) (GstPad *pad, gboolean active);
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void (*caps_changed) (GstPad *pad, GstCaps *newcaps);
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void (*eos) (GstPad *pad);
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};
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typedef enum {
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GST_PAD_ALWAYS,
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GST_PAD_SOMETIMES,
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} GstPadPresence;
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typedef struct _GstPadTemplate GstPadTemplate;
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/* template */
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struct _GstPadTemplate {
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gchar *name_template;
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GstPadDirection direction;
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GstPadPresence presence;
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GstCaps *caps;
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};
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/* factory */
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typedef gpointer GstPadFactoryEntry;
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typedef GstPadFactoryEntry GstPadFactory[];
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#define GST_PAD_FACTORY_ALWAYS GINT_TO_POINTER(GST_PAD_ALWAYS)
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#define GST_PAD_FACTORY_SOMETIMES GINT_TO_POINTER(GST_PAD_SOMETIMES)
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#define GST_PAD_FACTORY_SRC GINT_TO_POINTER(GST_PAD_SRC)
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#define GST_PAD_FACTORY_SINK GINT_TO_POINTER(GST_PAD_SINK)
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GtkType gst_pad_get_type (void);
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GstPad* gst_pad_new (gchar *name, GstPadDirection direction);
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#define gst_pad_destroy(pad) gst_object_destroy (GST_OBJECT (pad))
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GstPad* gst_pad_new_from_template (GstPadTemplate *temp, gchar *name);
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GstPadDirection gst_pad_get_direction (GstPad *pad);
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void gst_pad_set_chain_function (GstPad *pad, GstPadChainFunction chain);
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void gst_pad_set_get_function (GstPad *pad, GstPadGetFunction get);
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void gst_pad_set_getregion_function (GstPad *pad, GstPadGetRegionFunction getregion);
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void gst_pad_set_qos_function (GstPad *pad, GstPadQoSFunction qos);
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void gst_pad_set_caps (GstPad *pad, GstCaps *caps);
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GstCaps* gst_pad_get_caps (GstPad *pad);
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void gst_pad_set_name (GstPad *pad, const gchar *name);
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const gchar* gst_pad_get_name (GstPad *pad);
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void gst_pad_set_parent (GstPad *pad, GstObject *parent);
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GstObject* gst_pad_get_parent (GstPad *pad);
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void gst_pad_add_ghost_parent (GstPad *pad, GstObject *parent);
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void gst_pad_remove_ghost_parent (GstPad *pad, GstObject *parent);
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GList* gst_pad_get_ghost_parents (GstPad *pad);
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GstPad* gst_pad_get_peer (GstPad *pad);
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void gst_pad_connect (GstPad *srcpad, GstPad *sinkpad);
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void gst_pad_disconnect (GstPad *srcpad, GstPad *sinkpad);
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#if 1
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void gst_pad_push (GstPad *pad, GstBuffer *buffer);
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#else
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#define gst_pad_push(pad,buf) G_STMT_START{ \
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if ((pad)->peer->pushfunc) ((pad)->peer->pushfunc)((pad)->peer,(buf)); \
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}G_STMT_END
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#endif
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#if 1
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GstBuffer* gst_pad_pull (GstPad *pad);
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GstBuffer* gst_pad_pull_region (GstPad *pad, gulong offset, gulong size);
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#else
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#define gst_pad_pull(pad) \
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(((pad)->peer->pullfunc) ? ((pad)->peer->pullfunc)((pad)->peer) : NULL)
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#define gst_pad_pullregion(pad,offset,size) \
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(((pad)->peer->pullregionfunc) ? ((pad)->peer->pullregionfunc)((pad)->peer,(offset),(size)) : NULL)
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#endif
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void gst_pad_handle_qos (GstPad *pad, glong qos_message);
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xmlNodePtr gst_pad_save_thyself (GstPad *pad, xmlNodePtr parent);
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void gst_pad_load_and_connect (xmlNodePtr parent, GstObject *element, GHashTable *elements);
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/* factory */
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GstPadTemplate* gst_padtemplate_new (GstPadFactory *factory);
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GstPadTemplate* gst_padtemplate_create (gchar *name_template,
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GstPadDirection direction, GstPadPresence presence,
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GstCaps *caps);
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xmlNodePtr gst_padtemplate_save_thyself (GstPadTemplate *pad, xmlNodePtr parent);
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GstPadTemplate* gst_padtemplate_load_thyself (xmlNodePtr parent);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __GST_PAD_H__ */
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