2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
3 * 2000 Wim Taymans <wtay@chello.be>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
23 #define DEBUG(format,args...)
24 #define DEBUG_NOPREFIX(format,args...)
25 #define VERBOSE(format,args...)
29 #include "gst_private.h"
31 #include "gstpipeline.h"
32 #include "gstthread.h"
35 typedef struct _gst_parse_priv gst_parse_priv;
36 struct _gst_parse_priv {
40 GHashTable *elementcounts;
45 typedef struct _gst_parse_delayed_pad gst_parse_delayed_pad;
46 struct _gst_parse_delayed_pad {
51 /* FIXME need to either revive this, or have pad->padtemplate connections in core
53 gst_parse_newpad(GstElement *element,GstPad *pad,launch_delayed_pad *peer)
55 gst_info("have NEW_PAD signal\n");
56 // if it matches, connect it
57 if (!strcmp(GST_PAD_NAME(pad),peer->name)) {
58 gst_pad_connect(pad,peer->peer);
59 gst_info("delayed connect of '%s' to '%s'\n",
60 GST_PAD_NAME(pad),GST_PAD_NAME(peer->peer));
70 static void have_eos (void)
72 DEBUG ("I have eos on the first element\n");
77 dynamic_connect (GstElement *element, GstPad *newpad, gpointer data)
79 dyn_connect *connect = (dyn_connect *)data;
81 if (!strcmp (gst_pad_get_name (newpad), connect->srcpadname)) {
82 gst_pad_connect (newpad, connect->target);
87 gst_parse_unique_name(gchar *type,gst_parse_priv *priv)
91 count = GPOINTER_TO_INT(g_hash_table_lookup(priv->elementcounts,type));
93 g_hash_table_insert(priv->elementcounts,type,GINT_TO_POINTER(count));
95 return g_strdup_printf("%s%d",type,count-1);
101 gst_parse_launch_cmdline(int argc,char *argv[],GstBin *parent,gst_parse_priv *priv)
105 GstElement *element = NULL, *previous = NULL, *prevelement = NULL;
106 gchar closingchar = '\0';
109 gchar *sinkpadname = NULL, *srcpadname = NULL;
111 GSList *sinkpads = NULL, *srcpads = NULL;
113 gint elementcount = 0;
118 if (GST_IS_PIPELINE(parent)) { closingchar = '\0';DEBUG("in pipeline "); }
119 else if (GST_IS_THREAD(parent)) { closingchar = '}';DEBUG("in thread "); }
120 else { closingchar = ')';DEBUG("in bin "); }
121 DEBUG_NOPREFIX("%s\n",GST_ELEMENT_NAME (GST_ELEMENT (parent)));
125 // FIXME this is a lame solution for problems with the first parser
126 if (arg == NULL) { i++;continue; }
129 DEBUG("** ARGUMENT is '%s'\n",arg);
131 // a null that slipped through the reconstruction
133 DEBUG("random arg, FIXME\n");
137 // end of the container
138 } else if (arg[0] == closingchar) {
139 // time to finish off this bin
140 DEBUG("exiting container %s\n",GST_ELEMENT_NAME (GST_ELEMENT (parent)));
145 } else if ((ptr = strchr(arg,'!'))) {
146 DEBUG("attempting to connect pads together....\n");
148 // if it starts with the !
151 // if there's a sinkpad...
153 sinkpadname = &arg[1];
157 srcpadname = g_strndup(arg,(ptr-arg));
158 // if there's a sinkpad
159 if (len > (ptr-arg)+1)
160 sinkpadname = &ptr[1];
165 GST_DEBUG(0,"have srcpad %s, sinkpad %s\n",srcpadname,sinkpadname);
167 g_slist_free(srcpads);
170 // if the srcpadname doesn't have any commas in it, find an actual pad
171 if (!srcpadname || !strchr(srcpadname,',')) {
172 if (srcpadname != NULL) {
173 if ((temppad = gst_element_get_pad(previous,srcpadname))){
174 srcpads = g_slist_append(srcpads,temppad);
176 else if ((temppad = gst_element_request_pad_by_name(previous,srcpadname))) {
177 srcpads = g_slist_append(srcpads,temppad);
180 GST_DEBUG(0,"NO SUCH pad %s in element %s\n",srcpadname,GST_ELEMENT_NAME(previous));
184 // check through the list to find the first sink pad
185 GST_DEBUG(0,"CHECKING through element %s for pad named %s\n",GST_ELEMENT_NAME(previous),srcpadname);
186 pads = gst_element_get_pad_list(previous);
188 temppad = GST_PARSE_LISTPAD(pads);
189 GST_DEBUG(0,"have pad %s:%s\n",GST_DEBUG_PAD_NAME(temppad));
190 if (GST_IS_GHOST_PAD(temppad)) GST_DEBUG(0,"it's a ghost pad\n");
191 if (gst_pad_get_direction (temppad) == GST_PAD_SRC){
192 srcpads = g_slist_append(srcpads,temppad);
195 pads = g_list_next (pads);
197 if (!srcpads) GST_DEBUG(0,"error, can't find a src pad!!!\n");
198 else GST_DEBUG(0,"have src pad %s:%s\n",GST_DEBUG_PAD_NAME(GST_PARSE_LISTPAD(srcpads)));
202 // argument with = in it
203 } else if (strstr(arg, "=")) {
206 gchar * pos = strstr(arg, "=");
207 // we have an argument
211 DEBUG("attempting to set argument '%s' to '%s' on element '%s'\n",
212 argname,argval,GST_ELEMENT_NAME(previous));
213 //gtk_object_set(GTK_OBJECT(previous),argname,argval,NULL);
214 gst_util_set_object_arg (GTK_OBJECT(previous), argname, argval);
217 // element or argument, or beginning of bin or thread
219 DEBUG("have element or bin/thread\n");
220 // if we have a bin or thread starting
221 if (strchr("({",arg[0])) {
223 // create a bin and add it to the current parent
224 element = gst_bin_new(g_strdup_printf("bin%d",priv->bincount++));
226 fprintf(stderr,"Couldn't create a bin!\n");
229 GST_DEBUG(0,"CREATED bin %s\n",GST_ELEMENT_NAME(element));
230 } else if (arg[0] == '{') {
231 // create a thread and add it to the current parent
232 element = gst_thread_new(g_strdup_printf("thread%d",priv->threadcount++));
234 fprintf(stderr,"Couldn't create a thread!\n");
237 GST_DEBUG(0,"CREATED thread %s\n",GST_ELEMENT_NAME(element));
240 i += gst_parse_launch_cmdline(argc - i, argv + i + 1, GST_BIN (element), priv);
243 // we have an element
244 DEBUG("attempting to create element '%s'\n",arg);
245 ptr = gst_parse_unique_name(arg,priv);
246 element = gst_elementfactory_make(arg,ptr);
249 fprintf(stderr,"Couldn't create a '%s', no such element or need to run gstreamer-register?\n",arg);
252 GST_DEBUG(0,"CREATED element %s\n",GST_ELEMENT_NAME(element));
255 gst_bin_add (GST_BIN (parent), element);
258 if (srcpads != NULL || srcpadname != NULL) {
260 GST_DEBUG(0, "need to connect to srcpad %s:%s\n",GST_DEBUG_PAD_NAME(GST_PARSE_LISTPAD(srcpads)));
262 g_slist_free(sinkpads);
265 if (sinkpadname != NULL){
266 if ((temppad = gst_element_get_pad(element,sinkpadname))){
267 sinkpads = g_slist_append(sinkpads,temppad);
269 else if ((temppad = gst_element_request_pad_by_name(element,sinkpadname))) {
270 sinkpads = g_slist_append(sinkpads,temppad);
274 // check through the list to find the first sink pad
275 pads = gst_element_get_pad_list(element);
277 temppad = GST_PAD(pads->data);
278 pads = g_list_next (pads);
279 if (gst_pad_get_direction (temppad) == GST_PAD_SINK){
280 sinkpads = g_slist_append(sinkpads,temppad);
286 if (!sinkpads) DEBUG("error, can't find a sink pad!!!\n");
287 else DEBUG("have sink pad %s:%s\n",GST_DEBUG_PAD_NAME(GST_PARSE_LISTPAD(sinkpads)));
290 dyn_connect *connect = g_malloc (sizeof (dyn_connect));
292 connect->srcpadname = srcpadname;
293 connect->target = GST_PARSE_LISTPAD(sinkpads);
295 GST_DEBUG(0,"SETTING UP dynamic connection %s:%s and %s:%s\n",gst_element_get_name (previous),
296 srcpadname,GST_DEBUG_PAD_NAME(GST_PARSE_LISTPAD(sinkpads)));
298 gtk_signal_connect (GTK_OBJECT (previous), "new_pad", dynamic_connect, connect);
299 gtk_signal_connect (GTK_OBJECT (previous), "new_ghost_pad", dynamic_connect, connect);
302 GST_DEBUG(0,"CONNECTING %s:%s and %s:%s\n",GST_DEBUG_PAD_NAME(GST_PARSE_LISTPAD(srcpads)),
303 GST_DEBUG_PAD_NAME(GST_PARSE_LISTPAD(sinkpads)));
304 gst_pad_connect(GST_PARSE_LISTPAD(srcpads),GST_PARSE_LISTPAD(sinkpads));
307 g_slist_free(srcpads);
310 g_slist_free(sinkpads);
315 // thomas: if we're the first element, connect eos signal
316 if (elementcount == 1)
318 gtk_signal_connect (GTK_OBJECT (element), "eos",
319 GTK_SIGNAL_FUNC (have_eos), NULL);
322 // if we're the first element, ghost all the sinkpads
323 if (elementcount == 1) {
324 DEBUG("first element, ghosting all of %s's sink pads to parent %s\n",
325 GST_ELEMENT_NAME(element),GST_ELEMENT_NAME(GST_ELEMENT(parent)));
326 pads = gst_element_get_pad_list (element);
328 temppad = GST_PAD (pads->data);
329 pads = g_list_next (pads);
330 if (!temppad) DEBUG("much oddness, pad doesn't seem to exist\n");
331 else if (gst_pad_get_direction (temppad) == GST_PAD_SINK) {
332 gst_element_add_ghost_pad (GST_ELEMENT (parent), temppad,
333 g_strdup_printf("%s-ghost",GST_PAD_NAME(temppad)));
334 GST_DEBUG(0,"GHOSTED %s:%s to %s as %s-ghost\n",
335 GST_DEBUG_PAD_NAME(temppad),GST_ELEMENT_NAME(GST_ELEMENT(parent)),GST_PAD_NAME(temppad));
341 if (!GST_IS_BIN(element)) prevelement = element;
347 // ghost all the src pads of the bin
348 if (prevelement != NULL) {
349 DEBUG("last element, ghosting all of %s's src pads to parent %s\n",
350 GST_ELEMENT_NAME(prevelement),GST_ELEMENT_NAME(GST_ELEMENT(parent)));
351 pads = gst_element_get_pad_list (prevelement);
353 temppad = GST_PAD (pads->data);
354 pads = g_list_next (pads);
355 if (!temppad) DEBUG("much oddness, pad doesn't seem to exist\n");
356 else if (gst_pad_get_direction (temppad) == GST_PAD_SRC) {
357 gst_element_add_ghost_pad (GST_ELEMENT (parent), temppad,
358 g_strdup_printf("%s-ghost",GST_PAD_NAME(temppad)));
359 GST_DEBUG(0,"GHOSTED %s:%s to %s as %s-ghost\n",
360 GST_DEBUG_PAD_NAME(temppad),GST_ELEMENT_NAME (parent),GST_PAD_NAME(temppad));
367 if (retval) return retval;
369 if (closingchar != '\0')
370 DEBUG("returning IN THE WRONG PLACE\n");
371 else DEBUG("ending pipeline\n");
377 * @cmdline: the command line describing the pipeline
378 * @parent: the parent bin for the resulting pipeline
380 * Create a new pipeline based on command line syntax.
385 gst_parse_launch(const gchar *cmdline,GstBin *parent)
391 const gchar *cp, *start, *end;
393 GSList *string_list = NULL, *slist;
396 priv.threadcount = 0;
398 priv.elementcounts = NULL;
399 priv.verbose = FALSE;
402 end = cmdline + strlen(cmdline);
407 // Extract the arguments to a gslist in reverse order
408 for (cp = cmdline; cp < end; ) {
409 i = strcspn(cp, "([{}]) \"\\");
412 temp = g_strconcat (temp, g_strndup (cp, i), NULL);
414 // see if we have an escape char
416 // normal argument - copy and add to the list
417 string_list = g_slist_prepend(string_list, temp);
422 temp = g_strconcat (temp, g_strndup (&cp[++i], 1), NULL);
428 while (cp < end && *cp == ' ') {
432 // handle quoted arguments
436 // find matching quote
437 while (cp < end && *cp != '"')
440 // make sure we got it
442 g_warning("gst_parse_launch: Unbalanced quote in command line");
443 // FIXME: The list leaks here
447 // copy the string sans quotes
448 string_list = g_slist_prepend(string_list, g_strndup(start, cp - start));
450 cp += 2; // skip the quote aswell
453 // brackets exist in a separate argument slot
454 if (*cp && strchr("([{}])", *cp)) {
455 string_list = g_slist_prepend(string_list, g_strndup(cp, 1));
461 // now allocate the new argv array
462 argvn = g_new0(char *,newargc);
463 GST_DEBUG(0,"got %d args\n",newargc);
465 // reverse the list and put the strings in the new array
468 for (slist = string_list; slist; slist = slist->next)
469 argvn[--i] = slist->data;
471 g_slist_free(string_list);
474 for (i=0;i<newargc;i++) {
475 GST_DEBUG(0,"arg %d is: %s\n",i,argvn[i]);
478 // set up the elementcounts hash
479 priv.elementcounts = g_hash_table_new(g_str_hash,g_str_equal);
482 i = gst_parse_launch_cmdline(newargc,argvn,parent,&priv);
484 // GST_DEBUG(0, "Finished - freeing temporary argument array");
485 // g_strfreev(argvn);