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;
110 GstPad *sinkpad = NULL, *srcpad = NULL;
112 gint elementcount = 0;
117 if (GST_IS_PIPELINE(parent)) { closingchar = '\0';DEBUG("in pipeline "); }
118 else if (GST_IS_THREAD(parent)) { closingchar = '}';DEBUG("in thread "); }
119 else { closingchar = ')';DEBUG("in bin "); }
120 DEBUG_NOPREFIX("%s\n",GST_ELEMENT_NAME (GST_ELEMENT (parent)));
124 // FIXME this is a lame solution for problems with the first parser
125 if (arg == NULL) { i++;continue; }
128 DEBUG("** ARGUMENT is '%s'\n",arg);
130 // a null that slipped through the reconstruction
132 DEBUG("random arg, FIXME\n");
136 // end of the container
137 } else if (arg[0] == closingchar) {
138 // time to finish off this bin
139 DEBUG("exiting container %s\n",GST_ELEMENT_NAME (GST_ELEMENT (parent)));
144 } else if ((ptr = strchr(arg,'!'))) {
145 DEBUG("attempting to connect pads together....\n");
147 // if it starts with the !
150 // if there's a sinkpad...
152 sinkpadname = &arg[1];
156 srcpadname = g_strndup(arg,(ptr-arg));
157 // if there's a sinkpad
158 if (len > (ptr-arg)+1)
159 sinkpadname = &ptr[1];
164 GST_DEBUG(0,"have srcpad %s, sinkpad %s\n",srcpadname,sinkpadname);
168 // if the srcpadname doesn't have any commas in it, find an actual pad
169 if (!srcpadname || !strchr(srcpadname,',')) {
170 if (srcpadname != NULL) {
171 srcpad = gst_element_get_pad(previous,srcpadname);
173 GST_DEBUG(0,"NO SUCH pad %s in element %s\n",srcpadname,GST_ELEMENT_NAME(previous));
176 else if (srcpad == NULL) {
177 // check through the list to find the first sink pad
178 GST_DEBUG(0,"CHECKING through element %s for pad named %s\n",GST_ELEMENT_NAME(previous),srcpadname);
179 pads = gst_element_get_pad_list(previous);
181 srcpad = GST_PAD(pads->data);
182 GST_DEBUG(0,"have pad %s:%s\n",GST_DEBUG_PAD_NAME(srcpad));
183 if (GST_IS_GHOST_PAD(srcpad)) GST_DEBUG(0,"it's a ghost pad\n");
184 pads = g_list_next (pads);
185 if (gst_pad_get_direction (srcpad) == GST_PAD_SRC) break;
188 if (!srcpad) GST_DEBUG(0,"error, can't find a src pad!!!\n");
189 else GST_DEBUG(0,"have src pad %s:%s\n",GST_DEBUG_PAD_NAME(srcpad));
193 // argument with = in it
194 } else if (strstr(arg, "=")) {
197 gchar * pos = strstr(arg, "=");
198 // we have an argument
202 DEBUG("attempting to set argument '%s' to '%s' on element '%s'\n",
203 argname,argval,GST_ELEMENT_NAME(previous));
204 //gtk_object_set(GTK_OBJECT(previous),argname,argval,NULL);
205 gst_util_set_object_arg (GTK_OBJECT(previous), argname, argval);
208 // element or argument, or beginning of bin or thread
210 DEBUG("have element or bin/thread\n");
211 // if we have a bin or thread starting
212 if (strchr("({",arg[0])) {
214 // create a bin and add it to the current parent
215 element = gst_bin_new(g_strdup_printf("bin%d",priv->bincount++));
217 fprintf(stderr,"Couldn't create a bin!\n");
220 GST_DEBUG(0,"CREATED bin %s\n",GST_ELEMENT_NAME(element));
221 } else if (arg[0] == '{') {
222 // create a thread and add it to the current parent
223 element = gst_thread_new(g_strdup_printf("thread%d",priv->threadcount++));
225 fprintf(stderr,"Couldn't create a thread!\n");
228 GST_DEBUG(0,"CREATED thread %s\n",GST_ELEMENT_NAME(element));
231 i += gst_parse_launch_cmdline(argc - i, argv + i + 1, GST_BIN (element), priv);
234 // we have an element
235 DEBUG("attempting to create element '%s'\n",arg);
236 ptr = gst_parse_unique_name(arg,priv);
237 element = gst_elementfactory_make(arg,ptr);
240 fprintf(stderr,"Couldn't create a '%s', no such element or need to run gstreamer-register?\n",arg);
243 GST_DEBUG(0,"CREATED element %s\n",GST_ELEMENT_NAME(element));
246 gst_bin_add (GST_BIN (parent), element);
249 if (srcpad != NULL || srcpadname != NULL) {
251 DEBUG("need to connect to srcpad %s:%s\n",GST_DEBUG_PAD_NAME(srcpad));
255 if (sinkpadname != NULL)
256 sinkpad = gst_element_get_pad(previous,sinkpadname);
259 // check through the list to find the first sink pad
260 pads = gst_element_get_pad_list(element);
262 sinkpad = GST_PAD(pads->data);
263 pads = g_list_next (pads);
264 if (gst_pad_get_direction (sinkpad) == GST_PAD_SINK) break;
269 if (!sinkpad) DEBUG("error, can't find a sink pad!!!\n");
270 else DEBUG("have sink pad %s:%s\n",GST_DEBUG_PAD_NAME(sinkpad));
273 dyn_connect *connect = g_malloc (sizeof (dyn_connect));
275 connect->srcpadname = srcpadname;
276 connect->target = sinkpad;
278 GST_DEBUG(0,"SETTING UP dynamic connection %s:%s and %s:%s\n",gst_element_get_name (previous),
279 srcpadname,GST_DEBUG_PAD_NAME(sinkpad));
281 gtk_signal_connect (GTK_OBJECT (previous), "new_pad", dynamic_connect, connect);
284 GST_DEBUG(0,"CONNECTING %s:%s and %s:%s\n",GST_DEBUG_PAD_NAME(srcpad),GST_DEBUG_PAD_NAME(sinkpad));
285 gst_pad_connect(srcpad,sinkpad);
293 // thomas: if we're the first element, connect eos signal
294 if (elementcount == 1)
296 gtk_signal_connect (GTK_OBJECT (element), "eos",
297 GTK_SIGNAL_FUNC (have_eos), NULL);
300 // if we're the first element, ghost all the sinkpads
301 if (elementcount == 1) {
302 DEBUG("first element, ghosting all of %s's sink pads to parent %s\n",
303 GST_ELEMENT_NAME(element),GST_ELEMENT_NAME(GST_ELEMENT(parent)));
304 pads = gst_element_get_pad_list (element);
306 sinkpad = GST_PAD (pads->data);
307 pads = g_list_next (pads);
308 if (!sinkpad) DEBUG("much oddness, pad doesn't seem to exist\n");
309 else if (gst_pad_get_direction (sinkpad) == GST_PAD_SINK) {
310 gst_element_add_ghost_pad (GST_ELEMENT (parent), sinkpad,
311 g_strdup_printf("%s-ghost",GST_PAD_NAME(sinkpad)));
312 GST_DEBUG(0,"GHOSTED %s:%s to %s as %s-ghost\n",
313 GST_DEBUG_PAD_NAME(sinkpad),GST_ELEMENT_NAME(GST_ELEMENT(parent)),GST_PAD_NAME(sinkpad));
319 if (!GST_IS_BIN(element)) prevelement = element;
325 // ghost all the src pads of the bin
326 if (prevelement != NULL) {
327 DEBUG("last element, ghosting all of %s's src pads to parent %s\n",
328 GST_ELEMENT_NAME(prevelement),GST_ELEMENT_NAME(GST_ELEMENT(parent)));
329 pads = gst_element_get_pad_list (prevelement);
331 srcpad = GST_PAD (pads->data);
332 pads = g_list_next (pads);
333 if (!srcpad) DEBUG("much oddness, pad doesn't seem to exist\n");
334 else if (gst_pad_get_direction (srcpad) == GST_PAD_SRC) {
335 gst_element_add_ghost_pad (GST_ELEMENT (parent), srcpad,
336 g_strdup_printf("%s-ghost",GST_PAD_NAME(srcpad)));
337 GST_DEBUG(0,"GHOSTED %s:%s to %s as %s-ghost\n",
338 GST_DEBUG_PAD_NAME(srcpad),GST_ELEMENT_NAME (parent),GST_PAD_NAME(srcpad));
345 if (retval) return retval;
347 if (closingchar != '\0')
348 DEBUG("returning IN THE WRONG PLACE\n");
349 else DEBUG("ending pipeline\n");
355 * @cmdline: the command line describing the pipeline
356 * @parent: the parent bin for the resulting pipeline
358 * Create a new pipeline based on command line syntax.
363 gst_parse_launch(const gchar *cmdline,GstBin *parent)
369 const gchar *cp, *start, *end;
371 GSList *string_list = NULL, *slist;
374 priv.threadcount = 0;
376 priv.elementcounts = NULL;
377 priv.verbose = FALSE;
380 end = cmdline + strlen(cmdline);
385 // Extract the arguments to a gslist in reverse order
386 for (cp = cmdline; cp < end; ) {
387 i = strcspn(cp, "([{}]) \"\\");
390 temp = g_strconcat (temp, g_strndup (cp, i), NULL);
392 // see if we have an escape char
394 // normal argument - copy and add to the list
395 string_list = g_slist_prepend(string_list, temp);
400 temp = g_strconcat (temp, g_strndup (&cp[++i], 1), NULL);
406 while (cp < end && *cp == ' ') {
410 // handle quoted arguments
414 // find matching quote
415 while (cp < end && *cp != '"')
418 // make sure we got it
420 g_warning("gst_parse_launch: Unbalanced quote in command line");
421 // FIXME: The list leaks here
425 // copy the string sans quotes
426 string_list = g_slist_prepend(string_list, g_strndup(start, cp - start));
428 cp += 2; // skip the quote aswell
431 // brackets exist in a separate argument slot
432 if (*cp && strchr("([{}])", *cp)) {
433 string_list = g_slist_prepend(string_list, g_strndup(cp, 1));
439 // now allocate the new argv array
440 argvn = g_new0(char *,newargc);
441 GST_DEBUG(0,"got %d args\n",newargc);
443 // reverse the list and put the strings in the new array
446 for (slist = string_list; slist; slist = slist->next)
447 argvn[--i] = slist->data;
449 g_slist_free(string_list);
452 for (i=0;i<newargc;i++) {
453 GST_DEBUG(0,"arg %d is: %s\n",i,argvn[i]);
456 // set up the elementcounts hash
457 priv.elementcounts = g_hash_table_new(g_str_hash,g_str_equal);
460 i = gst_parse_launch_cmdline(newargc,argvn,parent,&priv);
462 // GST_DEBUG(0, "Finished - freeing temporary argument array");
463 // g_strfreev(argvn);