mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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3b2990b425
Original commit message from CVS: update to latest copy
1359 lines
47 KiB
C
1359 lines
47 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstscheduler.c: Default scheduling code for most cases
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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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//#define GST_DEBUG_ENABLED
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#include "gst_private.h"
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#include "gstscheduler.h"
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static int
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gst_bin_loopfunc_wrapper (int argc,char *argv[])
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{
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GstElement *element = GST_ELEMENT (argv);
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G_GNUC_UNUSED const gchar *name = GST_ELEMENT_NAME (element);
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GST_DEBUG_ENTER("(%d,'%s')",argc,name);
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do {
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GST_DEBUG (GST_CAT_DATAFLOW,"calling loopfunc %s for element %s\n",
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GST_DEBUG_FUNCPTR_NAME (element->loopfunc),name);
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(element->loopfunc) (element);
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GST_DEBUG (GST_CAT_DATAFLOW,"element %s ended loop function\n", name);
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} while (!GST_ELEMENT_IS_COTHREAD_STOPPING(element));
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GST_FLAG_UNSET(element,GST_ELEMENT_COTHREAD_STOPPING);
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GST_DEBUG_LEAVE("(%d,'%s')",argc,name);
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return 0;
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}
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static int
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gst_bin_chain_wrapper (int argc,char *argv[])
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{
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GstElement *element = GST_ELEMENT (argv);
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G_GNUC_UNUSED const gchar *name = GST_ELEMENT_NAME (element);
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GList *pads;
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GstPad *pad;
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GstRealPad *realpad;
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GstBuffer *buf;
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GST_DEBUG_ENTER("(\"%s\")",name);
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GST_DEBUG (GST_CAT_DATAFLOW,"stepping through pads\n");
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do {
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pads = element->pads;
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while (pads) {
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pad = GST_PAD (pads->data);
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pads = g_list_next (pads);
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if (!GST_IS_REAL_PAD(pad)) continue;
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realpad = GST_REAL_PAD(pad);
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if (GST_RPAD_DIRECTION(realpad) == GST_PAD_SINK) {
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GST_DEBUG (GST_CAT_DATAFLOW,"pulling a buffer from %s:%s\n", name, GST_PAD_NAME (pad));
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buf = gst_pad_pull (pad);
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GST_DEBUG (GST_CAT_DATAFLOW,"calling chain function of %s:%s\n", name, GST_PAD_NAME (pad));
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if (buf) GST_RPAD_CHAINFUNC(realpad) (pad,buf);
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GST_DEBUG (GST_CAT_DATAFLOW,"calling chain function of %s:%s done\n", name, GST_PAD_NAME (pad));
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}
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}
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} while (!GST_ELEMENT_IS_COTHREAD_STOPPING(element));
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GST_FLAG_UNSET(element,GST_ELEMENT_COTHREAD_STOPPING);
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GST_DEBUG_LEAVE("(%d,'%s')",argc,name);
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return 0;
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}
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static int
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gst_bin_src_wrapper (int argc,char *argv[])
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{
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GstElement *element = GST_ELEMENT (argv);
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GList *pads;
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GstRealPad *realpad;
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GstBuffer *buf = NULL;
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G_GNUC_UNUSED const gchar *name = GST_ELEMENT_NAME (element);
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GST_DEBUG_ENTER("(%d,\"%s\")",argc,name);
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do {
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pads = element->pads;
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while (pads) {
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if (!GST_IS_REAL_PAD(pads->data)) continue;
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realpad = (GstRealPad*)(pads->data);
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pads = g_list_next(pads);
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if (GST_RPAD_DIRECTION(realpad) == GST_PAD_SRC) {
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GST_DEBUG (GST_CAT_DATAFLOW,"calling _getfunc for %s:%s\n",GST_DEBUG_PAD_NAME(realpad));
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if (realpad->regiontype != GST_REGION_NONE) {
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g_return_val_if_fail (GST_RPAD_GETREGIONFUNC(realpad) != NULL, 0);
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// if (GST_RPAD_GETREGIONFUNC(realpad) == NULL)
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// fprintf(stderr,"error, no getregionfunc in \"%s\"\n", name);
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// else
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buf = (GST_RPAD_GETREGIONFUNC(realpad))((GstPad*)realpad,realpad->regiontype,realpad->offset,realpad->len);
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} else {
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g_return_val_if_fail (GST_RPAD_GETFUNC(realpad) != NULL, 0);
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// if (GST_RPAD_GETFUNC(realpad) == NULL)
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// fprintf(stderr,"error, no getfunc in \"%s\"\n", name);
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// else
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buf = GST_RPAD_GETFUNC(realpad) ((GstPad*)realpad);
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}
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GST_DEBUG (GST_CAT_DATAFLOW,"calling gst_pad_push on pad %s:%s\n",GST_DEBUG_PAD_NAME(realpad));
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if (buf) gst_pad_push ((GstPad*)realpad, buf);
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}
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}
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} while (!GST_ELEMENT_IS_COTHREAD_STOPPING(element));
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GST_FLAG_UNSET(element,GST_ELEMENT_COTHREAD_STOPPING);
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GST_DEBUG_LEAVE("");
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return 0;
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}
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static void
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gst_bin_pushfunc_proxy (GstPad *pad, GstBuffer *buf)
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{
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GstRealPad *peer = GST_RPAD_PEER(pad);
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GST_DEBUG_ENTER("(%s:%s)",GST_DEBUG_PAD_NAME(pad));
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GST_DEBUG (GST_CAT_DATAFLOW,"putting buffer %p in peer's pen\n",buf);
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// FIXME this should be bounded
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// loop until the bufferpen is empty so we can fill it up again
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while (GST_RPAD_BUFPEN(pad) != NULL) {
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GST_DEBUG (GST_CAT_DATAFLOW, "switching to %p to empty bufpen\n",
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GST_ELEMENT (GST_PAD_PARENT (pad))->threadstate);
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cothread_switch (GST_ELEMENT (GST_PAD_PARENT (pad))->threadstate);
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// we may no longer be the same pad, check.
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if (GST_RPAD_PEER(peer) != (GstRealPad *)pad) {
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GST_DEBUG (GST_CAT_DATAFLOW, "new pad in mid-switch!\n");
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pad = (GstPad *)GST_RPAD_PEER(peer);
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}
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}
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// now fill the bufferpen and switch so it can be consumed
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GST_RPAD_BUFPEN(GST_RPAD_PEER(pad)) = buf;
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GST_DEBUG (GST_CAT_DATAFLOW,"switching to %p\n",GST_ELEMENT (GST_PAD_PARENT (pad))->threadstate);
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cothread_switch (GST_ELEMENT (GST_PAD_PARENT (pad))->threadstate);
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GST_DEBUG (GST_CAT_DATAFLOW,"done switching\n");
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}
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static GstBuffer*
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gst_bin_pullfunc_proxy (GstPad *pad)
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{
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GstBuffer *buf;
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GstRealPad *peer = GST_RPAD_PEER(pad);
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GST_DEBUG_ENTER("(%s:%s)",GST_DEBUG_PAD_NAME(pad));
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// FIXME this should be bounded
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// we will loop switching to the peer until it's filled up the bufferpen
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while (GST_RPAD_BUFPEN(pad) == NULL) {
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GST_DEBUG (GST_CAT_DATAFLOW, "switching to \"%s\": %p to fill bufpen\n",
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GST_ELEMENT_NAME(GST_ELEMENT(GST_PAD_PARENT(pad))),
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GST_ELEMENT(GST_PAD_PARENT(pad))->threadstate);
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cothread_switch (GST_ELEMENT(GST_PAD_PARENT(pad))->threadstate);
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// we may no longer be the same pad, check.
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if (GST_RPAD_PEER(peer) != (GstRealPad *)pad) {
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GST_DEBUG (GST_CAT_DATAFLOW, "new pad in mid-switch!\n");
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pad = (GstPad *)GST_RPAD_PEER(peer);
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}
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}
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GST_DEBUG (GST_CAT_DATAFLOW,"done switching\n");
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// now grab the buffer from the pen, clear the pen, and return the buffer
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buf = GST_RPAD_BUFPEN(pad);
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GST_RPAD_BUFPEN(pad) = NULL;
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return buf;
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}
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static GstBuffer*
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gst_bin_pullregionfunc_proxy (GstPad *pad,GstRegionType type,guint64 offset,guint64 len)
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{
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GstBuffer *buf;
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GstRealPad *peer = GST_RPAD_PEER(pad);
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GST_DEBUG_ENTER("%s:%s,%d,%lld,%lld",GST_DEBUG_PAD_NAME(pad),type,offset,len);
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// put the region info into the pad
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GST_RPAD_REGIONTYPE(pad) = type;
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GST_RPAD_OFFSET(pad) = offset;
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GST_RPAD_LEN(pad) = len;
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// FIXME this should be bounded
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// we will loop switching to the peer until it's filled up the bufferpen
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while (GST_RPAD_BUFPEN(pad) == NULL) {
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GST_DEBUG (GST_CAT_DATAFLOW, "switching to %p to fill bufpen\n",
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GST_ELEMENT(GST_PAD_PARENT(pad))->threadstate);
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cothread_switch (GST_ELEMENT(GST_PAD_PARENT(pad))->threadstate);
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// we may no longer be the same pad, check.
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if (GST_RPAD_PEER(peer) != (GstRealPad *)pad) {
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GST_DEBUG (GST_CAT_DATAFLOW, "new pad in mid-switch!\n");
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pad = (GstPad *)GST_RPAD_PEER(peer);
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}
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}
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GST_DEBUG (GST_CAT_DATAFLOW,"done switching\n");
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// now grab the buffer from the pen, clear the pen, and return the buffer
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buf = GST_RPAD_BUFPEN(pad);
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GST_RPAD_BUFPEN(pad) = NULL;
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return buf;
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}
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static void
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gst_schedule_cothreaded_chain (GstBin *bin, GstScheduleChain *chain) {
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GList *elements;
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GstElement *element;
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cothread_func wrapper_function;
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GList *pads;
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GstPad *pad;
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GST_DEBUG (GST_CAT_SCHEDULING,"chain is using COTHREADS\n");
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// first create thread context
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if (bin->threadcontext == NULL) {
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GST_DEBUG (GST_CAT_SCHEDULING,"initializing cothread context\n");
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bin->threadcontext = cothread_init ();
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}
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// walk through all the chain's elements
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elements = chain->elements;
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while (elements) {
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element = GST_ELEMENT (elements->data);
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elements = g_list_next (elements);
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// start out without a wrapper function, we select it later
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wrapper_function = NULL;
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// if the element has a loopfunc...
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if (element->loopfunc != NULL) {
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wrapper_function = GST_DEBUG_FUNCPTR(gst_bin_loopfunc_wrapper);
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GST_DEBUG (GST_CAT_SCHEDULING,"element '%s' is a loop-based\n",GST_ELEMENT_NAME(element));
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} else {
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// otherwise we need to decide what kind of cothread
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// if it's not DECOUPLED, we decide based on whether it's a source or not
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if (!GST_FLAG_IS_SET (element, GST_ELEMENT_DECOUPLED)) {
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// if it doesn't have any sinks, it must be a source (duh)
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if (element->numsinkpads == 0) {
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wrapper_function = GST_DEBUG_FUNCPTR(gst_bin_src_wrapper);
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GST_DEBUG (GST_CAT_SCHEDULING,"element '%s' is a source, using _src_wrapper\n",GST_ELEMENT_NAME(element));
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} else {
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wrapper_function = GST_DEBUG_FUNCPTR(gst_bin_chain_wrapper);
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GST_DEBUG (GST_CAT_SCHEDULING,"element '%s' is a filter, using _chain_wrapper\n",GST_ELEMENT_NAME(element));
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}
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}
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}
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// now we have to walk through the pads to set up their state
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pads = gst_element_get_pad_list (element);
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while (pads) {
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pad = GST_PAD (pads->data);
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pads = g_list_next (pads);
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if (!GST_IS_REAL_PAD(pad)) continue;
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// if the element is DECOUPLED or outside the manager, we have to chain
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if ((wrapper_function == NULL) ||
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(GST_RPAD_PEER(pad) &&
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(GST_ELEMENT (GST_PAD_PARENT (GST_PAD (GST_RPAD_PEER (pad))))->sched != chain->sched))
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) {
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// set the chain proxies
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if (GST_RPAD_DIRECTION(pad) == GST_PAD_SINK) {
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GST_DEBUG (GST_CAT_SCHEDULING,"copying chain function into push proxy for %s:%s\n",GST_DEBUG_PAD_NAME(pad));
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GST_RPAD_PUSHFUNC(pad) = GST_RPAD_CHAINFUNC(pad);
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} else {
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GST_DEBUG (GST_CAT_SCHEDULING,"copying get function into pull proxy for %s:%s\n",GST_DEBUG_PAD_NAME(pad));
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GST_RPAD_PULLFUNC(pad) = GST_RPAD_GETFUNC(pad);
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GST_RPAD_PULLREGIONFUNC(pad) = GST_RPAD_GETREGIONFUNC(pad);
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}
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// otherwise we really are a cothread
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} else {
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if (gst_pad_get_direction (pad) == GST_PAD_SINK) {
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GST_DEBUG (GST_CAT_SCHEDULING,"setting cothreaded push proxy for sinkpad %s:%s\n",GST_DEBUG_PAD_NAME(pad));
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GST_RPAD_PUSHFUNC(pad) = GST_DEBUG_FUNCPTR(gst_bin_pushfunc_proxy);
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} else {
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GST_DEBUG (GST_CAT_SCHEDULING,"setting cothreaded pull proxy for srcpad %s:%s\n",GST_DEBUG_PAD_NAME(pad));
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GST_RPAD_PULLFUNC(pad) = GST_DEBUG_FUNCPTR(gst_bin_pullfunc_proxy);
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GST_RPAD_PULLREGIONFUNC(pad) = GST_DEBUG_FUNCPTR(gst_bin_pullregionfunc_proxy);
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}
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}
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}
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// need to set up the cothread now
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if (wrapper_function != NULL) {
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if (element->threadstate == NULL) {
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element->threadstate = cothread_create (bin->threadcontext);
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GST_DEBUG (GST_CAT_SCHEDULING,"created cothread %p for '%s'\n",element->threadstate,GST_ELEMENT_NAME(element));
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}
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cothread_setfunc (element->threadstate, wrapper_function, 0, (char **)element);
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GST_DEBUG (GST_CAT_SCHEDULING,"set wrapper function for '%s' to &%s\n",GST_ELEMENT_NAME(element),
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GST_DEBUG_FUNCPTR_NAME(wrapper_function));
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}
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}
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}
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static void
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gst_schedule_chained_chain (GstBin *bin, _GstBinChain *chain) {
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GList *elements;
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GstElement *element;
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GList *pads;
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GstPad *pad;
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GST_DEBUG (GST_CAT_SCHEDULING,"chain entered\n");
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// walk through all the elements
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elements = chain->elements;
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while (elements) {
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element = GST_ELEMENT (elements->data);
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elements = g_list_next (elements);
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// walk through all the pads
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pads = gst_element_get_pad_list (element);
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while (pads) {
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pad = GST_PAD (pads->data);
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pads = g_list_next (pads);
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if (!GST_IS_REAL_PAD(pad)) continue;
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if (GST_RPAD_DIRECTION(pad) == GST_PAD_SINK) {
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GST_DEBUG (GST_CAT_SCHEDULING,"copying chain function into push proxy for %s:%s\n",GST_DEBUG_PAD_NAME(pad));
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GST_RPAD_PUSHFUNC(pad) = GST_RPAD_CHAINFUNC(pad);
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} else {
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GST_DEBUG (GST_CAT_SCHEDULING,"copying get function into pull proxy for %s:%s\n",GST_DEBUG_PAD_NAME(pad));
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GST_RPAD_PULLFUNC(pad) = GST_RPAD_GETFUNC(pad);
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GST_RPAD_PULLREGIONFUNC(pad) = GST_RPAD_GETREGIONFUNC(pad);
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}
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}
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}
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}
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/* depracated!! */
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static void
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gst_bin_schedule_cleanup (GstBin *bin)
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{
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GList *chains;
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_GstBinChain *chain;
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chains = bin->chains;
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while (chains) {
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chain = (_GstBinChain *)(chains->data);
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chains = g_list_next(chains);
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// g_list_free(chain->disabled);
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g_list_free(chain->elements);
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g_list_free(chain->entries);
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g_free(chain);
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}
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g_list_free(bin->chains);
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bin->chains = NULL;
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}
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static void
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gst_scheduler_handle_eos (GstElement *element, _GstBinChain *chain)
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{
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GST_DEBUG (GST_CAT_SCHEDULING,"chain removed from scheduler, EOS from element \"%s\"\n", GST_ELEMENT_NAME (element));
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chain->need_scheduling = FALSE;
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}
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/*
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void gst_bin_schedule_func(GstBin *bin) {
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GList *elements;
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GstElement *element;
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GSList *pending = NULL;
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GList *pads;
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GstPad *pad;
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GstElement *peerparent;
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GList *chains;
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GstScheduleChain *chain;
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GST_DEBUG_ENTER("(\"%s\")",GST_ELEMENT_NAME (GST_ELEMENT (bin)));
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gst_bin_schedule_cleanup(bin);
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// next we have to find all the separate scheduling chains
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GST_DEBUG (GST_CAT_SCHEDULING,"attempting to find scheduling chains...\n");
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// first make a copy of the managed_elements we can mess with
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elements = g_list_copy (bin->managed_elements);
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// we have to repeat until the list is empty to get all chains
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while (elements) {
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element = GST_ELEMENT (elements->data);
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// if this is a DECOUPLED element
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if (GST_FLAG_IS_SET (element, GST_ELEMENT_DECOUPLED)) {
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// skip this element entirely
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GST_DEBUG (GST_CAT_SCHEDULING,"skipping '%s' because it's decoupled\n",GST_ELEMENT_NAME(element));
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elements = g_list_next (elements);
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continue;
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}
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GST_DEBUG (GST_CAT_SCHEDULING,"starting with element '%s'\n",GST_ELEMENT_NAME(element));
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// prime the pending list with the first element off the top
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pending = g_slist_prepend (NULL, element);
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// and remove that one from the main list
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elements = g_list_remove (elements, element);
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// create a chain structure
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chain = g_new0 (_GstBinChain, 1);
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chain->need_scheduling = TRUE;
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// for each pending element, walk the pipeline
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do {
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// retrieve the top of the stack and pop it
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element = GST_ELEMENT (pending->data);
|
|
pending = g_slist_remove (pending, element);
|
|
|
|
// add ourselves to the chain's list of elements
|
|
GST_DEBUG (GST_CAT_SCHEDULING,"adding '%s' to chain\n",GST_ELEMENT_NAME(element));
|
|
chain->elements = g_list_prepend (chain->elements, element);
|
|
chain->num_elements++;
|
|
gtk_signal_connect (GTK_OBJECT (element), "eos", gst_scheduler_handle_eos, chain);
|
|
// set the cothreads flag as appropriate
|
|
if (GST_FLAG_IS_SET (element, GST_ELEMENT_USE_COTHREAD))
|
|
chain->need_cothreads = TRUE;
|
|
if (bin->use_cothreads == TRUE)
|
|
chain->need_cothreads = TRUE;
|
|
|
|
// if we're managed by the current bin, and we're not decoupled,
|
|
// go find all the peers and add them to the list of elements to check
|
|
if ((element->manager == GST_ELEMENT(bin)) &&
|
|
!GST_FLAG_IS_SET (element, GST_ELEMENT_DECOUPLED)) {
|
|
// remove ourselves from the outer list of all managed elements
|
|
// GST_DEBUG (GST_CAT_SCHEDULING,"removing '%s' from list of possible elements\n",GST_ELEMENT_NAME(element));
|
|
elements = g_list_remove (elements, element);
|
|
|
|
// if this element is a source, add it as an entry
|
|
if (element->numsinkpads == 0) {
|
|
chain->entries = g_list_prepend (chain->entries, element);
|
|
GST_DEBUG (GST_CAT_SCHEDULING,"added '%s' as SRC entry into the chain\n",GST_ELEMENT_NAME(element));
|
|
}
|
|
|
|
// now we have to walk the pads to find peers
|
|
pads = gst_element_get_pad_list (element);
|
|
while (pads) {
|
|
pad = GST_PAD (pads->data);
|
|
pads = g_list_next (pads);
|
|
if (!GST_IS_REAL_PAD(pad)) continue;
|
|
GST_DEBUG (GST_CAT_SCHEDULING,"have pad %s:%s\n",GST_DEBUG_PAD_NAME(pad));
|
|
|
|
if (GST_RPAD_PEER(pad) == NULL) continue;
|
|
if (GST_RPAD_PEER(pad) == NULL) GST_ERROR(pad,"peer is null!");
|
|
g_assert(GST_RPAD_PEER(pad) != NULL);
|
|
g_assert(GST_PAD_PARENT (GST_PAD(GST_RPAD_PEER(pad))) != NULL);
|
|
|
|
peerparent = GST_ELEMENT(GST_PAD_PARENT (GST_PAD(GST_RPAD_PEER(pad))));
|
|
|
|
GST_DEBUG (GST_CAT_SCHEDULING,"peer pad %p\n", GST_RPAD_PEER(pad));
|
|
// only bother with if the pad's peer's parent is this bin or it's DECOUPLED
|
|
// only add it if it's in the list of un-visited elements still
|
|
if ((g_list_find (elements, peerparent) != NULL) ||
|
|
GST_FLAG_IS_SET (peerparent, GST_ELEMENT_DECOUPLED)) {
|
|
// add the peer element to the pending list
|
|
GST_DEBUG (GST_CAT_SCHEDULING,"adding '%s' to list of pending elements\n",
|
|
GST_ELEMENT_NAME(peerparent));
|
|
pending = g_slist_prepend (pending, peerparent);
|
|
|
|
// if this is a sink pad, then the element on the other side is an entry
|
|
if ((GST_RPAD_DIRECTION(pad) == GST_PAD_SINK) &&
|
|
(GST_FLAG_IS_SET (peerparent, GST_ELEMENT_DECOUPLED))) {
|
|
chain->entries = g_list_prepend (chain->entries, peerparent);
|
|
gtk_signal_connect (GTK_OBJECT (peerparent), "eos", gst_scheduler_handle_eos, chain);
|
|
GST_DEBUG (GST_CAT_SCHEDULING,"added '%s' as DECOUPLED entry into the chain\n",GST_ELEMENT_NAME(peerparent));
|
|
}
|
|
} else
|
|
GST_DEBUG (GST_CAT_SCHEDULING,"element '%s' has already been dealt with\n",GST_ELEMENT_NAME(peerparent));
|
|
}
|
|
}
|
|
} while (pending);
|
|
|
|
// add the chain to the bin
|
|
GST_DEBUG (GST_CAT_SCHEDULING,"have chain with %d elements: ",chain->num_elements);
|
|
{ GList *elements = chain->elements;
|
|
while (elements) {
|
|
element = GST_ELEMENT (elements->data);
|
|
elements = g_list_next(elements);
|
|
GST_DEBUG_NOPREFIX(GST_CAT_SCHEDULING,"%s, ",GST_ELEMENT_NAME(element));
|
|
}
|
|
}
|
|
GST_DEBUG_NOPREFIX(GST_CAT_DATAFLOW,"\n");
|
|
bin->chains = g_list_prepend (bin->chains, chain);
|
|
bin->num_chains++;
|
|
}
|
|
// free up the list in case it's full of DECOUPLED elements
|
|
g_list_free (elements);
|
|
|
|
GST_DEBUG (GST_CAT_SCHEDULING,"\nwe have %d chains to schedule\n",bin->num_chains);
|
|
|
|
// now we have to go through all the chains and schedule them
|
|
chains = bin->chains;
|
|
while (chains) {
|
|
chain = (GstScheduleChain *)(chains->data);
|
|
chains = g_list_next (chains);
|
|
|
|
// schedule as appropriate
|
|
if (chain->need_cothreads) {
|
|
gst_schedule_cothreaded_chain (bin,chain);
|
|
} else {
|
|
gst_schedule_chained_chain (bin,chain);
|
|
}
|
|
}
|
|
|
|
GST_DEBUG_LEAVE("(\"%s\")",GST_ELEMENT_NAME(GST_ELEMENT(bin)));
|
|
}
|
|
*/
|
|
|
|
|
|
/*
|
|
// ***** check for possible connections outside
|
|
// get the pad's peer
|
|
peer = gst_pad_get_peer (pad);
|
|
// FIXME this should be an error condition, if not disabled
|
|
if (!peer) break;
|
|
// get the parent of the peer of the pad
|
|
outside = GST_ELEMENT (gst_pad_get_parent (peer));
|
|
// FIXME this should *really* be an error condition
|
|
if (!outside) break;
|
|
// if it's a source or connection and it's not ours...
|
|
if ((GST_IS_SRC (outside) || GST_IS_CONNECTION (outside)) &&
|
|
(gst_object_get_parent (GST_OBJECT (outside)) != GST_OBJECT (bin))) {
|
|
if (gst_pad_get_direction (pad) == GST_PAD_SINK) {
|
|
GST_DEBUG (0,"dealing with outside source element %s\n",GST_ELEMENT_NAME(outside));
|
|
// GST_DEBUG (0,"PUNT: copying pullfunc ptr from %s:%s to %s:%s (@ %p)\n",
|
|
//GST_DEBUG_PAD_NAME(pad->peer),GST_DEBUG_PAD_NAME(pad),&pad->pullfunc);
|
|
// pad->pullfunc = pad->peer->pullfunc;
|
|
// GST_DEBUG (0,"PUNT: setting pushfunc proxy to fake proxy on %s:%s\n",GST_DEBUG_PAD_NAME(pad->peer));
|
|
// pad->peer->pushfunc = GST_DEBUG_FUNCPTR(gst_bin_pushfunc_fake_proxy);
|
|
GST_RPAD_PULLFUNC(pad) = GST_DEBUG_FUNCPTR(gst_bin_pullfunc_proxy);
|
|
GST_RPAD_PULLREGIONFUNC(pad) = GST_DEBUG_FUNCPTR(gst_bin_pullregionfunc_proxy);
|
|
}
|
|
} else {
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
} else if (GST_IS_SRC (element)) {
|
|
GST_DEBUG (0,"adding '%s' as entry point, because it's a source\n",GST_ELEMENT_NAME (element));
|
|
bin->entries = g_list_prepend (bin->entries,element);
|
|
bin->num_entries++;
|
|
cothread_setfunc(element->threadstate,gst_bin_src_wrapper,0,(char **)element);
|
|
}
|
|
|
|
pads = gst_element_get_pad_list (element);
|
|
while (pads) {
|
|
pad = GST_PAD(pads->data);
|
|
|
|
if (gst_pad_get_direction (pad) == GST_PAD_SINK) {
|
|
GST_DEBUG (0,"setting push proxy for sinkpad %s:%s\n",GST_DEBUG_PAD_NAME(pad));
|
|
// set the proxy functions
|
|
pad->pushfunc = GST_DEBUG_FUNCPTR(gst_bin_pushfunc_proxy);
|
|
GST_DEBUG (0,"pushfunc %p = gst_bin_pushfunc_proxy %p\n",&pad->pushfunc,gst_bin_pushfunc_proxy);
|
|
} else if (gst_pad_get_direction (pad) == GST_PAD_SRC) {
|
|
GST_DEBUG (0,"setting pull proxies for srcpad %s:%s\n",GST_DEBUG_PAD_NAME(pad));
|
|
// set the proxy functions
|
|
GST_RPAD_PULLFUNC(pad) = GST_DEBUG_FUNCPTR(gst_bin_pullfunc_proxy);
|
|
GST_RPAD_PULLREGIONFUNC(pad) = GST_DEBUG_FUNCPTR(gst_bin_pullregionfunc_proxy);
|
|
GST_DEBUG (0,"pad->pullfunc(@%p) = gst_bin_pullfunc_proxy(@%p)\n",
|
|
&pad->pullfunc,gst_bin_pullfunc_proxy);
|
|
pad->pullregionfunc = GST_DEBUG_FUNCPTR(gst_bin_pullregionfunc_proxy);
|
|
}
|
|
pads = g_list_next (pads);
|
|
}
|
|
elements = g_list_next (elements);
|
|
|
|
// if there are no entries, we have to pick one at random
|
|
if (bin->num_entries == 0)
|
|
bin->entries = g_list_prepend (bin->entries, GST_ELEMENT(bin->children->data));
|
|
}
|
|
} else {
|
|
GST_DEBUG (0,"don't need cothreads, looking for entry points\n");
|
|
// we have to find which elements will drive an iteration
|
|
elements = bin->children;
|
|
while (elements) {
|
|
element = GST_ELEMENT (elements->data);
|
|
GST_DEBUG (0,"found element \"%s\"\n", GST_ELEMENT_NAME (element));
|
|
if (GST_IS_BIN (element)) {
|
|
gst_bin_create_plan (GST_BIN (element));
|
|
}
|
|
if (GST_IS_SRC (element)) {
|
|
GST_DEBUG (0,"adding '%s' as entry point, because it's a source\n",GST_ELEMENT_NAME (element));
|
|
bin->entries = g_list_prepend (bin->entries, element);
|
|
bin->num_entries++;
|
|
}
|
|
|
|
// go through all the pads, set pointers, and check for connections
|
|
pads = gst_element_get_pad_list (element);
|
|
while (pads) {
|
|
pad = GST_PAD (pads->data);
|
|
|
|
if (gst_pad_get_direction (pad) == GST_PAD_SINK) {
|
|
GST_DEBUG (0,"found SINK pad %s:%s\n", GST_DEBUG_PAD_NAME(pad));
|
|
|
|
// copy the peer's chain function, easy enough
|
|
GST_DEBUG (0,"copying peer's chainfunc to %s:%s's pushfunc\n",GST_DEBUG_PAD_NAME(pad));
|
|
GST_RPAD_PUSHFUNC(pad) = GST_DEBUG_FUNCPTR(GST_RPAD_CHAINFUNC(GST_RPAD_PEER(pad)));
|
|
|
|
// need to walk through and check for outside connections
|
|
//FIXME need to do this for all pads
|
|
// get the pad's peer
|
|
peer = GST_RPAD_PEER(pad);
|
|
if (!peer) {
|
|
GST_DEBUG (0,"found SINK pad %s has no peer\n", GST_ELEMENT_NAME (pad));
|
|
break;
|
|
}
|
|
// get the parent of the peer of the pad
|
|
outside = GST_ELEMENT (GST_RPAD_PARENT(peer));
|
|
if (!outside) break;
|
|
// if it's a connection and it's not ours...
|
|
if (GST_IS_CONNECTION (outside) &&
|
|
(gst_object_get_parent (GST_OBJECT (outside)) != GST_OBJECT (bin))) {
|
|
gst_info("gstbin: element \"%s\" is the external source Connection "
|
|
"for internal element \"%s\"\n",
|
|
GST_ELEMENT_NAME (GST_ELEMENT (outside)),
|
|
GST_ELEMENT_NAME (GST_ELEMENT (element)));
|
|
bin->entries = g_list_prepend (bin->entries, outside);
|
|
bin->num_entries++;
|
|
}
|
|
}
|
|
else {
|
|
GST_DEBUG (0,"found pad %s\n", GST_ELEMENT_NAME (pad));
|
|
}
|
|
pads = g_list_next (pads);
|
|
|
|
}
|
|
elements = g_list_next (elements);
|
|
}
|
|
*/
|
|
|
|
|
|
|
|
|
|
/*
|
|
// If cothreads are needed, we need to not only find elements but
|
|
// set up cothread states and various proxy functions.
|
|
if (bin->need_cothreads) {
|
|
GST_DEBUG (0,"bin is using cothreads\n");
|
|
|
|
// first create thread context
|
|
if (bin->threadcontext == NULL) {
|
|
GST_DEBUG (0,"initializing cothread context\n");
|
|
bin->threadcontext = cothread_init ();
|
|
}
|
|
|
|
// walk through all the children
|
|
elements = bin->managed_elements;
|
|
while (elements) {
|
|
element = GST_ELEMENT (elements->data);
|
|
elements = g_list_next (elements);
|
|
|
|
// start out with a NULL warpper function, we'll set it if we want a cothread
|
|
wrapper_function = NULL;
|
|
|
|
// have to decide if we need to or can use a cothreads, and if so which wrapper
|
|
// first of all, if there's a loopfunc, the decision's already made
|
|
if (element->loopfunc != NULL) {
|
|
wrapper_function = GST_DEBUG_FUNCPTR(gst_bin_loopfunc_wrapper);
|
|
GST_DEBUG (0,"element %s is a loopfunc, must use a cothread\n",GST_ELEMENT_NAME (element));
|
|
} else {
|
|
// otherwise we need to decide if it needs a cothread
|
|
// if it's complex, or cothreads are preferred and it's *not* decoupled, cothread it
|
|
if (GST_FLAG_IS_SET (element,GST_ELEMENT_COMPLEX) ||
|
|
(GST_FLAG_IS_SET (bin,GST_BIN_FLAG_PREFER_COTHREADS) &&
|
|
!GST_FLAG_IS_SET (element,GST_ELEMENT_DECOUPLED))) {
|
|
// base it on whether we're going to loop through source or sink pads
|
|
if (element->numsinkpads == 0)
|
|
wrapper_function = GST_DEBUG_FUNCPTR(gst_bin_src_wrapper);
|
|
else
|
|
wrapper_function = GST_DEBUG_FUNCPTR(gst_bin_chain_wrapper);
|
|
}
|
|
}
|
|
|
|
// walk through the all the pads for this element, setting proxy functions
|
|
// the selection of proxy functions depends on whether we're in a cothread or not
|
|
pads = gst_element_get_pad_list (element);
|
|
while (pads) {
|
|
pad = GST_PAD (pads->data);
|
|
pads = g_list_next (pads);
|
|
|
|
// check to see if someone else gets to set up the element
|
|
peer_manager = GST_ELEMENT((pad)->peer->parent)->manager;
|
|
if (peer_manager != GST_ELEMENT(bin)) {
|
|
GST_DEBUG (0,"WARNING: pad %s:%s is connected outside of bin\n",GST_DEBUG_PAD_NAME(pad));
|
|
}
|
|
|
|
// if the wrapper_function is set, we need to use the proxy functions
|
|
if (wrapper_function != NULL) {
|
|
// set up proxy functions
|
|
if (gst_pad_get_direction (pad) == GST_PAD_SINK) {
|
|
GST_DEBUG (0,"setting push proxy for sinkpad %s:%s\n",GST_DEBUG_PAD_NAME(pad));
|
|
pad->pushfunc = GST_DEBUG_FUNCPTR(gst_bin_pushfunc_proxy);
|
|
} else if (gst_pad_get_direction (pad) == GST_PAD_SRC) {
|
|
GST_DEBUG (0,"setting pull proxy for srcpad %s:%s\n",GST_DEBUG_PAD_NAME(pad));
|
|
GST_RPAD_PULLFUNC(pad) = GST_DEBUG_FUNCPTR(gst_bin_pullfunc_proxy);
|
|
GST_RPAD_PULLREGIONFUNC(pad) = GST_DEBUG_FUNCPTR(gst_bin_pullregionfunc_proxy);
|
|
}
|
|
} else {
|
|
// otherwise we need to set up for 'traditional' chaining
|
|
if (gst_pad_get_direction (pad) == GST_PAD_SINK) {
|
|
// we can just copy the chain function, since it shares the prototype
|
|
GST_DEBUG (0,"copying chain function into push proxy for %s:%s\n",
|
|
GST_DEBUG_PAD_NAME(pad));
|
|
pad->pushfunc = pad->chainfunc;
|
|
} else if (gst_pad_get_direction (pad) == GST_PAD_SRC) {
|
|
// we can just copy the get function, since it shares the prototype
|
|
GST_DEBUG (0,"copying get function into pull proxy for %s:%s\n",
|
|
GST_DEBUG_PAD_NAME(pad));
|
|
pad->pullfunc = pad->getfunc;
|
|
}
|
|
}
|
|
}
|
|
|
|
// if a loopfunc has been specified, create and set up a cothread
|
|
if (wrapper_function != NULL) {
|
|
if (element->threadstate == NULL) {
|
|
element->threadstate = cothread_create (bin->threadcontext);
|
|
GST_DEBUG (0,"created cothread %p (@%p) for \"%s\"\n",element->threadstate,
|
|
&element->threadstate,GST_ELEMENT_NAME (element));
|
|
}
|
|
cothread_setfunc (element->threadstate, wrapper_function, 0, (char **)element);
|
|
GST_DEBUG (0,"set wrapper function for \"%s\" to &%s\n",GST_ELEMENT_NAME (element),
|
|
GST_DEBUG_FUNCPTR_NAME(wrapper_function));
|
|
}
|
|
|
|
// // HACK: if the element isn't decoupled, it's an entry
|
|
// if (!GST_FLAG_IS_SET(element,GST_ELEMENT_DECOUPLED))
|
|
// bin->entries = g_list_append(bin->entries, element);
|
|
}
|
|
|
|
// otherwise, cothreads are not needed
|
|
} else {
|
|
GST_DEBUG (0,"bin is chained, no cothreads needed\n");
|
|
|
|
elements = bin->managed_elements;
|
|
while (elements) {
|
|
element = GST_ELEMENT (elements->data);
|
|
elements = g_list_next (elements);
|
|
|
|
pads = gst_element_get_pad_list (element);
|
|
while (pads) {
|
|
pad = GST_PAD (pads->data);
|
|
pads = g_list_next (pads);
|
|
|
|
if (gst_pad_get_direction (pad) == GST_PAD_SINK) {
|
|
GST_DEBUG (0,"copying chain function into push proxy for %s:%s\n",GST_DEBUG_PAD_NAME(pad));
|
|
pad->pushfunc = pad->chainfunc;
|
|
} else {
|
|
GST_DEBUG (0,"copying get function into pull proxy for %s:%s\n",GST_DEBUG_PAD_NAME(pad));
|
|
pad->pullfunc = pad->getfunc;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
*/
|
|
|
|
|
|
/*************** INCREMENTAL SCHEDULING CODE STARTS HERE ***************/
|
|
|
|
//static GstSchedule realsched;
|
|
//static GstSchedule *sched = &realsched;
|
|
|
|
|
|
static void gst_schedule_class_init (GstScheduleClass *klass);
|
|
static void gst_schedule_init (GstSchedule *schedule);
|
|
|
|
static GstObjectClass *parent_class = NULL;
|
|
|
|
GtkType gst_schedule_get_type(void) {
|
|
static GtkType schedule_type = 0;
|
|
|
|
if (!schedule_type) {
|
|
static const GtkTypeInfo schedule_info = {
|
|
"GstSchedule",
|
|
sizeof(GstSchedule),
|
|
sizeof(GstScheduleClass),
|
|
(GtkClassInitFunc)gst_schedule_class_init,
|
|
(GtkObjectInitFunc)gst_schedule_init,
|
|
(GtkArgSetFunc)NULL,
|
|
(GtkArgGetFunc)NULL,
|
|
(GtkClassInitFunc)NULL,
|
|
};
|
|
schedule_type = gtk_type_unique(GST_TYPE_OBJECT,&schedule_info);
|
|
}
|
|
return schedule_type;
|
|
}
|
|
|
|
static void
|
|
gst_schedule_class_init (GstScheduleClass *klass)
|
|
{
|
|
parent_class = gtk_type_class(GST_TYPE_OBJECT);
|
|
}
|
|
|
|
static void
|
|
gst_schedule_init (GstSchedule *schedule)
|
|
{
|
|
schedule->add_element = GST_DEBUG_FUNCPTR(gst_schedule_add_element);
|
|
schedule->remove_element = GST_DEBUG_FUNCPTR(gst_schedule_remove_element);
|
|
schedule->enable_element = GST_DEBUG_FUNCPTR(gst_schedule_enable_element);
|
|
schedule->disable_element = GST_DEBUG_FUNCPTR(gst_schedule_disable_element);
|
|
schedule->pad_connect = GST_DEBUG_FUNCPTR(gst_schedule_pad_connect);
|
|
schedule->pad_disconnect = GST_DEBUG_FUNCPTR(gst_schedule_pad_disconnect);
|
|
schedule->iterate = GST_DEBUG_FUNCPTR(gst_schedule_iterate);
|
|
}
|
|
|
|
GstSchedule*
|
|
gst_schedule_new(GstElement *parent)
|
|
{
|
|
GstSchedule *sched = GST_SCHEDULE (gtk_type_new (GST_TYPE_SCHEDULE));
|
|
|
|
sched->parent = parent;
|
|
|
|
return sched;
|
|
}
|
|
|
|
|
|
/* this function will look at a pad and determine if the peer parent is
|
|
* a possible candidate for connecting up in the same chain. */
|
|
GstElement *gst_schedule_check_pad (GstSchedule *sched, GstPad *pad) {
|
|
GstRealPad *peer;
|
|
GstElement *peerelement;
|
|
|
|
GST_INFO (GST_CAT_SCHEDULING, "checking pad %s:%s for peer in scheduler",
|
|
GST_DEBUG_PAD_NAME(pad));
|
|
|
|
peer = GST_PAD_PEER (pad);
|
|
if (peer == NULL) return NULL;
|
|
peerelement = GST_ELEMENT(GST_PAD_PARENT (peer));
|
|
|
|
// first of all, if the peer element is decoupled, it will be in the same chain
|
|
if (GST_FLAG_IS_SET(peerelement,GST_ELEMENT_DECOUPLED))
|
|
return peerelement;
|
|
|
|
// now check to see if it's in the same schedule
|
|
if (g_list_find(sched->elements,peerelement))
|
|
return peerelement;
|
|
|
|
// otherwise it's not a candidate
|
|
return NULL;
|
|
}
|
|
|
|
GstScheduleChain *
|
|
gst_schedule_chain_new (GstSchedule *sched)
|
|
{
|
|
GstScheduleChain *chain = g_new (GstScheduleChain, 1);
|
|
|
|
chain->sched = sched;
|
|
chain->disabled = NULL;
|
|
chain->elements = NULL;
|
|
chain->num_elements = 0;
|
|
chain->entry = NULL;
|
|
chain->cothreaded_elements = 0;
|
|
chain->schedule = FALSE;
|
|
|
|
sched->chains = g_list_prepend (sched->chains, chain);
|
|
sched->num_chains++;
|
|
|
|
GST_INFO (GST_CAT_SCHEDULING, "created new chain, now are %d chains",sched->num_chains);
|
|
|
|
return chain;
|
|
}
|
|
|
|
void
|
|
gst_schedule_chain_destroy (GstScheduleChain *chain)
|
|
{
|
|
chain->sched->chains = g_list_remove (chain->sched->chains, chain);
|
|
chain->sched->num_chains--;
|
|
|
|
g_list_free (chain->disabled);
|
|
g_list_free (chain->elements);
|
|
g_free (chain);
|
|
}
|
|
|
|
void
|
|
gst_schedule_chain_add_element (GstScheduleChain *chain, GstElement *element)
|
|
{
|
|
GST_INFO (GST_CAT_SCHEDULING, "adding element \"%s\" to chain", GST_ELEMENT_NAME (element));
|
|
|
|
chain->disabled = g_list_prepend (chain->disabled, element);
|
|
chain->num_elements++;
|
|
}
|
|
|
|
void
|
|
gst_schedule_chain_enable_element (GstScheduleChain *chain, GstElement *element)
|
|
{
|
|
GST_INFO (GST_CAT_SCHEDULING, "enabling element \"%s\" in chain", GST_ELEMENT_NAME (element));
|
|
|
|
// remove from disabled list
|
|
chain->disabled = g_list_remove (chain->disabled, element);
|
|
|
|
// add to elements list
|
|
chain->elements = g_list_prepend (chain->elements, element);
|
|
|
|
// reschedule the chain
|
|
gst_schedule_cothreaded_chain(GST_BIN(chain->sched->parent),chain);
|
|
}
|
|
|
|
void
|
|
gst_schedule_chain_disable_element (GstScheduleChain *chain, GstElement *element)
|
|
{
|
|
GST_INFO (GST_CAT_SCHEDULING, "disabling element \"%s\" in chain", GST_ELEMENT_NAME (element));
|
|
|
|
// remove from elements list
|
|
chain->elements = g_list_remove (chain->elements, element);
|
|
|
|
// add to disabled list
|
|
chain->disabled = g_list_prepend (chain->disabled, element);
|
|
|
|
// reschedule the chain
|
|
gst_schedule_cothreaded_chain(GST_BIN(chain->sched->parent),chain);
|
|
}
|
|
|
|
void
|
|
gst_schedule_chain_remove_element (GstScheduleChain *chain, GstElement *element)
|
|
{
|
|
GST_INFO (GST_CAT_SCHEDULING, "removing element \"%s\" from chain", GST_ELEMENT_NAME (element));
|
|
|
|
// if it's active, deactivate it
|
|
if (g_list_find (chain->elements, element)) {
|
|
gst_schedule_chain_disable_element (chain, element);
|
|
}
|
|
|
|
chain->disabled = g_list_remove (chain->disabled, element);
|
|
chain->num_elements--;
|
|
}
|
|
|
|
void
|
|
gst_schedule_chain_elements (GstSchedule *sched, GstElement *element1, GstElement *element2)
|
|
{
|
|
GList *chains;
|
|
GstScheduleChain *chain;
|
|
GstScheduleChain *chain1 = NULL, *chain2 = NULL;
|
|
GstElement *element;
|
|
|
|
// first find the chains that hold the two
|
|
chains = sched->chains;
|
|
while (chains) {
|
|
chain = (GstScheduleChain *)(chains->data);
|
|
chains = g_list_next(chains);
|
|
|
|
if (g_list_find (chain->disabled,element1))
|
|
chain1 = chain;
|
|
else if (g_list_find (chain->elements,element1))
|
|
chain1 = chain;
|
|
|
|
if (g_list_find (chain->disabled,element2))
|
|
chain2 = chain;
|
|
else if (g_list_find (chain->elements,element2))
|
|
chain2 = chain;
|
|
}
|
|
|
|
// first check to see if they're in the same chain, we're done if that's the case
|
|
if ((chain1 != NULL) && (chain1 == chain2)) {
|
|
GST_INFO (GST_CAT_SCHEDULING, "elements are already in the same chain");
|
|
return;
|
|
}
|
|
|
|
// now, if neither element has a chain, create one
|
|
if ((chain1 == NULL) && (chain2 == NULL)) {
|
|
GST_INFO (GST_CAT_SCHEDULING, "creating new chain to hold two new elements");
|
|
chain = gst_schedule_chain_new (sched);
|
|
gst_schedule_chain_add_element (chain, element1);
|
|
gst_schedule_chain_add_element (chain, element2);
|
|
// FIXME chain changed here
|
|
// gst_schedule_cothreaded_chain(chain->sched->parent,chain);
|
|
|
|
// otherwise if both have chains already, join them
|
|
} else if ((chain1 != NULL) && (chain2 != NULL)) {
|
|
GST_INFO (GST_CAT_SCHEDULING, "joining two existing chains together");
|
|
// take the contents of chain2 and merge them into chain1
|
|
chain1->disabled = g_list_concat (chain1->disabled, g_list_copy(chain2->disabled));
|
|
chain1->elements = g_list_concat (chain1->elements, g_list_copy(chain2->elements));
|
|
chain1->num_elements += chain2->num_elements;
|
|
// FIXME chain changed here
|
|
// gst_schedule_cothreaded_chain(chain->sched->parent,chain);
|
|
|
|
gst_schedule_chain_destroy(chain2);
|
|
|
|
// otherwise one has a chain already, the other doesn't
|
|
} else {
|
|
// pick out which one has the chain, and which doesn't
|
|
if (chain1 != NULL) chain = chain1, element = element2;
|
|
else chain = chain2, element = element1;
|
|
|
|
GST_INFO (GST_CAT_SCHEDULING, "adding element to existing chain");
|
|
gst_schedule_chain_add_element (chain, element);
|
|
// FIXME chain changed here
|
|
// gst_schedule_cothreaded_chain(chain->sched->parent,chain);
|
|
}
|
|
}
|
|
|
|
void
|
|
gst_schedule_pad_connect (GstSchedule *sched, GstPad *srcpad, GstPad *sinkpad)
|
|
{
|
|
GstElement *peerelement;
|
|
|
|
GST_INFO (GST_CAT_SCHEDULING, "have pad connected callback on %s:%s",GST_DEBUG_PAD_NAME(srcpad));
|
|
|
|
if ((peerelement = gst_schedule_check_pad(sched,srcpad))) {
|
|
GST_INFO (GST_CAT_SCHEDULING, "peer is in same schedule, chaining together");
|
|
gst_schedule_chain_elements (sched, GST_ELEMENT(GST_PAD_PARENT(srcpad)), peerelement);
|
|
}
|
|
}
|
|
|
|
// find the chain within the schedule that holds the element, if any
|
|
GstScheduleChain *
|
|
gst_schedule_find_chain (GstSchedule *sched, GstElement *element)
|
|
{
|
|
GList *chains;
|
|
GstScheduleChain *chain;
|
|
|
|
GST_INFO (GST_CAT_SCHEDULING, "searching for element \"%s\" in chains",GST_ELEMENT_NAME(element));
|
|
|
|
chains = sched->chains;
|
|
while (chains) {
|
|
chain = (GstScheduleChain *)(chains->data);
|
|
chains = g_list_next (chains);
|
|
|
|
if (g_list_find (chain->elements, element))
|
|
return chain;
|
|
if (g_list_find (chain->disabled, element))
|
|
return chain;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
gst_schedule_chain_recursive_add (GstScheduleChain *chain, GstElement *element)
|
|
{
|
|
GList *pads;
|
|
GstPad *pad;
|
|
GstElement *peerelement;
|
|
|
|
// add the element to the chain
|
|
gst_schedule_chain_add_element (chain, element);
|
|
|
|
// now go through all the pads and see which peers can be added
|
|
pads = element->pads;
|
|
while (pads) {
|
|
pad = GST_PAD(pads->data);
|
|
pads = g_list_next (pads);
|
|
|
|
// if it's a potential peer
|
|
if ((peerelement = gst_schedule_check_pad (chain->sched, pad))) {
|
|
// if it's not already in a chain, add it to this one
|
|
if (gst_schedule_find_chain (chain->sched, peerelement) == NULL) {
|
|
gst_schedule_chain_recursive_add (chain, peerelement);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
gst_schedule_pad_disconnect (GstSchedule *sched, GstPad *srcpad, GstPad *sinkpad)
|
|
{
|
|
GstScheduleChain *chain;
|
|
GstElement *element1, *element2;
|
|
GstScheduleChain *chain1, *chain2;
|
|
|
|
GST_INFO (GST_CAT_SCHEDULING, "have pad disconnected callback on %s:%s",GST_DEBUG_PAD_NAME(srcpad));
|
|
|
|
// we need to have the parent elements of each pad
|
|
element1 = GST_ELEMENT(GST_PAD_PARENT(srcpad));
|
|
element2 = GST_ELEMENT(GST_PAD_PARENT(sinkpad));
|
|
GST_INFO (GST_CAT_SCHEDULING, "disconnecting elements \"%s\" and \"%s\"",
|
|
GST_ELEMENT_NAME(element1), GST_ELEMENT_NAME(element2));
|
|
|
|
// first task is to remove the old chain they belonged to.
|
|
// this can be accomplished by taking either of the elements,
|
|
// since they are guaranteed to be in the same chain
|
|
// FIXME is it potentially better to make an attempt at splitting cleaner??
|
|
chain = gst_schedule_find_chain (sched, element1);
|
|
if (chain) {
|
|
GST_INFO (GST_CAT_SCHEDULING, "destroying chain");
|
|
gst_schedule_chain_destroy (chain);
|
|
}
|
|
|
|
// now create a new chain to hold element1 and build it from scratch
|
|
chain1 = gst_schedule_chain_new (sched);
|
|
gst_schedule_chain_recursive_add (chain1, element1);
|
|
// this is an ugly hack to handle elements left over
|
|
if (chain1->num_elements == 1)
|
|
gst_schedule_chain_destroy(chain1);
|
|
|
|
// check the other element to see if it landed in the newly created chain
|
|
if (gst_schedule_find_chain (sched, element2) == NULL) {
|
|
// if not in chain, create chain and build from scratch
|
|
chain2 = gst_schedule_chain_new (sched);
|
|
gst_schedule_chain_recursive_add (chain2, element2);
|
|
// this is an ugly hack to handle elements left over
|
|
if (chain2->num_elements == 1)
|
|
gst_schedule_chain_destroy(chain2);
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
gst_schedule_add_element (GstSchedule *sched, GstElement *element)
|
|
{
|
|
GList *pads;
|
|
GstPad *pad;
|
|
GstElement *peerelement;
|
|
|
|
g_return_if_fail (element != NULL);
|
|
g_return_if_fail (GST_IS_ELEMENT(element));
|
|
|
|
GST_INFO (GST_CAT_SCHEDULING, "adding element \"%s\" to schedule",
|
|
GST_ELEMENT_NAME(element));
|
|
|
|
// first add it to the list of elements that are to be scheduled
|
|
sched->elements = g_list_prepend (sched->elements, element);
|
|
sched->num_elements++;
|
|
|
|
// set the sched pointer in the element itself
|
|
gst_element_set_sched (element, sched);
|
|
|
|
// set the sched pointer in all the pads
|
|
pads = element->pads;
|
|
while (pads) {
|
|
pad = GST_PAD(pads->data);
|
|
pads = g_list_next(pads);
|
|
|
|
// we only operate on real pads
|
|
if (!GST_IS_REAL_PAD(pad)) continue;
|
|
|
|
// set the pad's sched pointer
|
|
gst_pad_set_sched (pad, sched);
|
|
|
|
// if the peer element is a candidate
|
|
if ((peerelement = gst_schedule_check_pad(sched,pad))) {
|
|
GST_INFO (GST_CAT_SCHEDULING, "peer is in same schedule, chaining together");
|
|
// make sure that the two elements are in the same chain
|
|
gst_schedule_chain_elements (sched,element,peerelement);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
gst_schedule_enable_element (GstSchedule *sched, GstElement *element)
|
|
{
|
|
GstScheduleChain *chain;
|
|
|
|
// find the chain the element's in
|
|
chain = gst_schedule_find_chain (sched, element);
|
|
|
|
if (chain)
|
|
gst_schedule_chain_enable_element (chain, element);
|
|
else
|
|
GST_INFO (GST_CAT_SCHEDULING, "element not found in any chain, not enabling");
|
|
}
|
|
|
|
void
|
|
gst_schedule_disable_element (GstSchedule *sched, GstElement *element)
|
|
{
|
|
GstScheduleChain *chain;
|
|
|
|
// find the chain the element is in
|
|
chain = gst_schedule_find_chain (sched, element);
|
|
|
|
// remove it from the chain
|
|
if (chain) {
|
|
gst_schedule_chain_disable_element(chain,element);
|
|
}
|
|
}
|
|
|
|
void
|
|
gst_schedule_remove_element (GstSchedule *sched, GstElement *element)
|
|
{
|
|
g_return_if_fail (element != NULL);
|
|
g_return_if_fail (GST_IS_ELEMENT(element));
|
|
|
|
if (g_list_find (sched->elements, element)) {
|
|
GST_INFO (GST_CAT_SCHEDULING, "removing element \"%s\" from schedule",
|
|
GST_ELEMENT_NAME(element));
|
|
|
|
// disable the element, i.e. remove from chain
|
|
gst_schedule_disable_element (sched, element);
|
|
|
|
// unset the scheduler
|
|
gst_element_set_sched (element, NULL);
|
|
|
|
// remove it from the list of elements
|
|
sched->elements = g_list_remove (sched->elements, element);
|
|
sched->num_elements--;
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gst_schedule_iterate (GstSchedule *sched)
|
|
{
|
|
GstBin *bin = GST_BIN(sched->parent);
|
|
GList *chains;
|
|
GstScheduleChain *chain;
|
|
GstElement *entry;
|
|
gint num_scheduled = 0;
|
|
gboolean eos = FALSE;
|
|
|
|
GST_DEBUG_ENTER("(\"%s\")", GST_ELEMENT_NAME (bin));
|
|
|
|
g_return_val_if_fail (bin != NULL, TRUE);
|
|
g_return_val_if_fail (GST_IS_BIN (bin), TRUE);
|
|
// g_return_val_if_fail (GST_STATE (bin) == GST_STATE_PLAYING, TRUE);
|
|
|
|
// step through all the chains
|
|
chains = sched->chains;
|
|
if (chains == NULL) return FALSE;
|
|
while (chains) {
|
|
chain = (GstScheduleChain *)(chains->data);
|
|
chains = g_list_next (chains);
|
|
|
|
// if (!chain->need_scheduling) continue;
|
|
|
|
// if (chain->need_cothreads) {
|
|
// all we really have to do is switch to the first child
|
|
// FIXME this should be lots more intelligent about where to start
|
|
GST_DEBUG (GST_CAT_DATAFLOW,"starting iteration via cothreads\n");
|
|
|
|
if (chain->elements) {
|
|
// FIXME FIXME FIXME need to not use a DECOUPLED element as entry
|
|
entry = GST_ELEMENT (chain->elements->data);
|
|
if (entry) {
|
|
GST_FLAG_SET (entry, GST_ELEMENT_COTHREAD_STOPPING);
|
|
GST_DEBUG (GST_CAT_DATAFLOW,"set COTHREAD_STOPPING flag on \"%s\"(@%p)\n",
|
|
GST_ELEMENT_NAME (entry),entry);
|
|
cothread_switch (entry->threadstate);
|
|
} else {
|
|
GST_INFO (GST_CAT_DATAFLOW,"no entry into chain!");
|
|
}
|
|
} else {
|
|
GST_INFO (GST_CAT_DATAFLOW,"no entry into chain!");
|
|
}
|
|
|
|
/*
|
|
} else {
|
|
GST_DEBUG (GST_CAT_DATAFLOW,"starting iteration via chain-functions\n");
|
|
|
|
entries = chain->entries;
|
|
|
|
g_assert (entries != NULL);
|
|
|
|
while (entries) {
|
|
entry = GST_ELEMENT (entries->data);
|
|
entries = g_list_next (entries);
|
|
|
|
GST_DEBUG (GST_CAT_DATAFLOW,"have entry \"%s\"\n",GST_ELEMENT_NAME (entry));
|
|
|
|
if (GST_IS_BIN (entry)) {
|
|
gst_bin_iterate (GST_BIN (entry));
|
|
} else {
|
|
pads = entry->pads;
|
|
while (pads) {
|
|
pad = GST_PAD (pads->data);
|
|
if (GST_RPAD_DIRECTION(pad) == GST_PAD_SRC) {
|
|
GST_DEBUG (GST_CAT_DATAFLOW,"calling getfunc of %s:%s\n",GST_DEBUG_PAD_NAME(pad));
|
|
if (GST_REAL_PAD(pad)->getfunc == NULL)
|
|
fprintf(stderr, "error, no getfunc in \"%s\"\n", GST_ELEMENT_NAME (entry));
|
|
else
|
|
buf = (GST_REAL_PAD(pad)->getfunc)(pad);
|
|
if (buf) gst_pad_push(pad,buf);
|
|
}
|
|
pads = g_list_next (pads);
|
|
}
|
|
}
|
|
}
|
|
}*/
|
|
num_scheduled++;
|
|
}
|
|
|
|
/*
|
|
// check if nothing was scheduled that was ours..
|
|
if (!num_scheduled) {
|
|
// are there any other elements that are still busy?
|
|
if (bin->num_eos_providers) {
|
|
GST_LOCK (bin);
|
|
GST_DEBUG (GST_CATA_DATAFLOW,"waiting for eos providers\n");
|
|
g_cond_wait (bin->eoscond, GST_OBJECT(bin)->lock);
|
|
GST_DEBUG (GST_CAT_DATAFLOW,"num eos providers %d\n", bin->num_eos_providers);
|
|
GST_UNLOCK (bin);
|
|
}
|
|
else {
|
|
gst_element_signal_eos (GST_ELEMENT (bin));
|
|
eos = TRUE;
|
|
}
|
|
}
|
|
*/
|
|
|
|
GST_DEBUG (GST_CAT_DATAFLOW, "leaving (%s)\n", GST_ELEMENT_NAME (bin));
|
|
return !eos;
|
|
}
|
|
|
|
|
|
|
|
void
|
|
gst_schedule_show (GstSchedule *sched)
|
|
{
|
|
GList *chains, *elements;
|
|
GstElement *element;
|
|
GstScheduleChain *chain;
|
|
|
|
if (sched == NULL) {
|
|
g_print("schedule doesn't exist for this element\n");
|
|
return;
|
|
}
|
|
|
|
g_return_if_fail(GST_IS_SCHEDULE(sched));
|
|
|
|
g_print("schedule has %d elements in it: ",sched->num_elements);
|
|
elements = sched->elements;
|
|
while (elements) {
|
|
element = GST_ELEMENT(elements->data);
|
|
elements = g_list_next(elements);
|
|
|
|
g_print("%s, ",GST_ELEMENT_NAME(element));
|
|
}
|
|
g_print("\n");
|
|
|
|
g_print("schedule has %d chains in it\n",sched->num_chains);
|
|
chains = sched->chains;
|
|
while (chains) {
|
|
chain = (GstScheduleChain *)(chains->data);
|
|
chains = g_list_next(chains);
|
|
|
|
elements = chain->disabled;
|
|
while (elements) {
|
|
element = GST_ELEMENT(elements->data);
|
|
elements = g_list_next(elements);
|
|
|
|
g_print("!%s, ",GST_ELEMENT_NAME(element));
|
|
}
|
|
|
|
elements = chain->elements;
|
|
while (elements) {
|
|
element = GST_ELEMENT(elements->data);
|
|
elements = g_list_next(elements);
|
|
|
|
g_print("%s, ",GST_ELEMENT_NAME(element));
|
|
}
|
|
g_print("\n");
|
|
}
|
|
}
|