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));
71 dynamic_connect (GstElement *element, GstPad *newpad, gpointer data)
73 dyn_connect *connect = (dyn_connect *)data;
75 if (!strcmp (gst_pad_get_name (newpad), connect->srcpadname)) {
76 gst_pad_connect (newpad, connect->target);
81 gst_parse_unique_name(gchar *type,gst_parse_priv *priv)
85 count = GPOINTER_TO_INT(g_hash_table_lookup(priv->elementcounts,type));
87 g_hash_table_insert(priv->elementcounts,type,GINT_TO_POINTER(count));
89 return g_strdup_printf("%s%d",type,count-1);
95 gst_parse_launch_cmdline(int argc,char *argv[],GstBin *parent,gst_parse_priv *priv)
99 GstElement *element = NULL, *previous = NULL, *prevelement = NULL;
100 gchar closingchar = '\0';
103 gchar *sinkpadname = NULL, *srcpadname = NULL;
104 GstPad *sinkpad = NULL, *srcpad = NULL;
106 gint elementcount = 0;
111 if (GST_IS_PIPELINE(parent)) { closingchar = '\0';DEBUG("in pipeline "); }
112 else if (GST_IS_THREAD(parent)) { closingchar = '}';DEBUG("in thread "); }
113 else { closingchar = ')';DEBUG("in bin "); }
114 DEBUG_NOPREFIX("%s\n",GST_ELEMENT_NAME (GST_ELEMENT (parent)));
118 // FIXME this is a lame solution for problems with the first parser
119 if (arg == NULL) { i++;continue; }
122 DEBUG("** ARGUMENT is '%s'\n",arg);
124 // a null that slipped through the reconstruction
126 DEBUG("random arg, FIXME\n");
130 // end of the container
131 } else if (arg[0] == closingchar) {
132 // time to finish off this bin
133 DEBUG("exiting container %s\n",GST_ELEMENT_NAME (GST_ELEMENT (parent)));
138 } else if ((ptr = strchr(arg,'!'))) {
139 DEBUG("attempting to connect pads together....\n");
141 // if it starts with the !
144 // if there's a sinkpad...
146 sinkpadname = &arg[1];
150 srcpadname = g_strndup(arg,(ptr-arg));
151 // if there's a sinkpad
152 if (len > (ptr-arg)+1)
153 sinkpadname = &ptr[1];
158 GST_DEBUG(0,"have srcpad %s, sinkpad %s\n",srcpadname,sinkpadname);
162 // if the srcpadname doesn't have any commas in it, find an actual pad
163 if (!srcpadname || !strchr(srcpadname,',')) {
164 if (srcpadname != NULL) {
165 srcpad = gst_element_get_pad(previous,srcpadname);
167 GST_DEBUG(0,"NO SUCH pad %s in element %s\n",srcpadname,GST_ELEMENT_NAME(previous));
170 else if (srcpad == NULL) {
171 // check through the list to find the first sink pad
172 GST_DEBUG(0,"CHECKING through element %s for pad named %s\n",GST_ELEMENT_NAME(previous),srcpadname);
173 pads = gst_element_get_pad_list(previous);
175 srcpad = GST_PAD(pads->data);
176 GST_DEBUG(0,"have pad %s:%s\n",GST_DEBUG_PAD_NAME(srcpad));
177 if (GST_IS_GHOST_PAD(srcpad)) GST_DEBUG(0,"it's a ghost pad\n");
178 pads = g_list_next (pads);
179 if (gst_pad_get_direction (srcpad) == GST_PAD_SRC) break;
182 if (!srcpad) GST_DEBUG(0,"error, can't find a src pad!!!\n");
183 else GST_DEBUG(0,"have src pad %s:%s\n",GST_DEBUG_PAD_NAME(srcpad));
187 // argument with = in it
188 } else if (strstr(arg, "=")) {
191 gchar * pos = strstr(arg, "=");
192 // we have an argument
196 DEBUG("attempting to set argument '%s' to '%s' on element '%s'\n",
197 argname,argval,GST_ELEMENT_NAME(previous));
198 //gtk_object_set(GTK_OBJECT(previous),argname,argval,NULL);
199 gst_util_set_object_arg (GTK_OBJECT(previous), argname, argval);
202 // element or argument, or beginning of bin or thread
204 DEBUG("have element or bin/thread\n");
205 // if we have a bin or thread starting
206 if (strchr("({",arg[0])) {
208 // create a bin and add it to the current parent
209 element = gst_bin_new(g_strdup_printf("bin%d",priv->bincount++));
211 fprintf(stderr,"Couldn't create a bin!\n");
214 GST_DEBUG(0,"CREATED bin %s\n",GST_ELEMENT_NAME(element));
215 } else if (arg[0] == '{') {
216 // create a thread and add it to the current parent
217 element = gst_thread_new(g_strdup_printf("thread%d",priv->threadcount++));
219 fprintf(stderr,"Couldn't create a thread!\n");
222 GST_DEBUG(0,"CREATED thread %s\n",GST_ELEMENT_NAME(element));
225 i += gst_parse_launch_cmdline(argc - i, argv + i + 1, GST_BIN (element), priv);
228 // we have an element
229 DEBUG("attempting to create element '%s'\n",arg);
230 ptr = gst_parse_unique_name(arg,priv);
231 element = gst_elementfactory_make(arg,ptr);
234 fprintf(stderr,"Couldn't create a '%s', no such element or need to run gstreamer-register?\n",arg);
237 GST_DEBUG(0,"CREATED element %s\n",GST_ELEMENT_NAME(element));
240 gst_bin_add (GST_BIN (parent), element);
243 if (srcpad != NULL || srcpadname != NULL) {
245 DEBUG("need to connect to srcpad %s:%s\n",GST_DEBUG_PAD_NAME(srcpad));
249 if (sinkpadname != NULL)
250 sinkpad = gst_element_get_pad(previous,sinkpadname);
253 // check through the list to find the first sink pad
254 pads = gst_element_get_pad_list(element);
256 sinkpad = GST_PAD(pads->data);
257 pads = g_list_next (pads);
258 if (gst_pad_get_direction (sinkpad) == GST_PAD_SINK) break;
263 if (!sinkpad) DEBUG("error, can't find a sink pad!!!\n");
264 else DEBUG("have sink pad %s:%s\n",GST_DEBUG_PAD_NAME(sinkpad));
267 dyn_connect *connect = g_malloc (sizeof (dyn_connect));
269 connect->srcpadname = srcpadname;
270 connect->target = sinkpad;
272 GST_DEBUG(0,"SETTING UP dynamic connection %s:%s and %s:%s\n",gst_element_get_name (previous),
273 srcpadname,GST_DEBUG_PAD_NAME(sinkpad));
275 gtk_signal_connect (GTK_OBJECT (previous), "new_pad", dynamic_connect, connect);
278 GST_DEBUG(0,"CONNECTING %s:%s and %s:%s\n",GST_DEBUG_PAD_NAME(srcpad),GST_DEBUG_PAD_NAME(sinkpad));
279 gst_pad_connect(srcpad,sinkpad);
287 // if we're the first element, ghost all the sinkpads
288 if (elementcount == 1) {
289 DEBUG("first element, ghosting all of %s's sink pads to parent %s\n",
290 GST_ELEMENT_NAME(element),GST_ELEMENT_NAME(GST_ELEMENT(parent)));
291 pads = gst_element_get_pad_list (element);
293 sinkpad = GST_PAD (pads->data);
294 pads = g_list_next (pads);
295 if (!sinkpad) DEBUG("much oddness, pad doesn't seem to exist\n");
296 else if (gst_pad_get_direction (sinkpad) == GST_PAD_SINK) {
297 gst_element_add_ghost_pad (GST_ELEMENT (parent), sinkpad,
298 g_strdup_printf("%s-ghost",GST_PAD_NAME(sinkpad)));
299 GST_DEBUG(0,"GHOSTED %s:%s to %s as %s-ghost\n",
300 GST_DEBUG_PAD_NAME(sinkpad),GST_ELEMENT_NAME(GST_ELEMENT(parent)),GST_PAD_NAME(sinkpad));
306 if (!GST_IS_BIN(element)) prevelement = element;
312 // ghost all the src pads of the bin
313 if (prevelement != NULL) {
314 DEBUG("last element, ghosting all of %s's src pads to parent %s\n",
315 GST_ELEMENT_NAME(prevelement),GST_ELEMENT_NAME(GST_ELEMENT(parent)));
316 pads = gst_element_get_pad_list (prevelement);
318 srcpad = GST_PAD (pads->data);
319 pads = g_list_next (pads);
320 if (!srcpad) DEBUG("much oddness, pad doesn't seem to exist\n");
321 else if (gst_pad_get_direction (srcpad) == GST_PAD_SRC) {
322 gst_element_add_ghost_pad (GST_ELEMENT (parent), srcpad,
323 g_strdup_printf("%s-ghost",GST_PAD_NAME(srcpad)));
324 GST_DEBUG(0,"GHOSTED %s:%s to %s as %s-ghost\n",
325 GST_DEBUG_PAD_NAME(srcpad),GST_ELEMENT_NAME (parent),GST_PAD_NAME(srcpad));
332 if (retval) return retval;
334 if (closingchar != '\0')
335 DEBUG("returning IN THE WRONG PLACE\n");
336 else DEBUG("ending pipeline\n");
342 * @cmdline: the command line describing the pipeline
343 * @parent: the parent bin for the resulting pipeline
345 * Create a new pipeline based on command line syntax.
350 gst_parse_launch(const gchar *cmdline,GstBin *parent)
356 const gchar *cp, *start, *end;
358 GSList *string_list = NULL, *slist;
361 priv.threadcount = 0;
363 priv.elementcounts = NULL;
364 priv.verbose = FALSE;
367 end = cmdline + strlen(cmdline);
372 // Extract the arguments to a gslist in reverse order
373 for (cp = cmdline; cp < end; ) {
374 i = strcspn(cp, "([{}]) \"\\");
377 temp = g_strconcat (temp, g_strndup (cp, i), NULL);
379 // see if we have an escape char
381 // normal argument - copy and add to the list
382 string_list = g_slist_prepend(string_list, temp);
387 temp = g_strconcat (temp, g_strndup (&cp[++i], 1), NULL);
393 while (cp < end && *cp == ' ') {
397 // handle quoted arguments
401 // find matching quote
402 while (cp < end && *cp != '"')
405 // make sure we got it
407 g_warning("gst_parse_launch: Unbalanced quote in command line");
408 // FIXME: The list leaks here
412 // copy the string sans quotes
413 string_list = g_slist_prepend(string_list, g_strndup(start, cp - start));
415 cp += 2; // skip the quote aswell
418 // brackets exist in a separate argument slot
419 if (*cp && strchr("([{}])", *cp)) {
420 string_list = g_slist_prepend(string_list, g_strndup(cp, 1));
426 // now allocate the new argv array
427 argvn = g_new0(char *,newargc);
428 GST_DEBUG(0,"got %d args\n",newargc);
430 // reverse the list and put the strings in the new array
433 for (slist = string_list; slist; slist = slist->next)
434 argvn[--i] = slist->data;
436 g_slist_free(string_list);
439 for (i=0;i<newargc;i++) {
440 GST_DEBUG(0,"arg %d is: %s\n",i,argvn[i]);
443 // set up the elementcounts hash
444 priv.elementcounts = g_hash_table_new(g_str_hash,g_str_equal);
447 i = gst_parse_launch_cmdline(newargc,argvn,parent,&priv);
449 // GST_DEBUG(0, "Finished - freeing temporary argument array");
450 // g_strfreev(argvn);