/* GStreamer * Copyright (C) 1999,2000 Erik Walthinsen * 2000 Wim Taymans * * : * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #define DEBUG(format,args...) #define DEBUG_NOPREFIX(format,args...) #define VERBOSE(format,args...) #include #include "gst_private.h" #include "gstparse.h" #include "gstpipeline.h" #include "gstthread.h" #include "gstutils.h" typedef struct _gst_parse_priv gst_parse_priv; struct _gst_parse_priv { guint bincount; guint threadcount; gint binlevel; GHashTable *elementcounts; gboolean verbose; gboolean debug; }; typedef struct _gst_parse_delayed_pad gst_parse_delayed_pad; struct _gst_parse_delayed_pad { gchar *name; GstPad *peer; }; /* FIXME need to either revive this, or have pad->padtemplate connections in core static void gst_parse_newpad(GstElement *element,GstPad *pad,launch_delayed_pad *peer) { gst_info("have NEW_PAD signal\n"); // if it matches, connect it if (!strcmp(GST_PAD_NAME(pad),peer->name)) { gst_pad_connect(pad,peer->peer); gst_info("delayed connect of '%s' to '%s'\n", GST_PAD_NAME(pad),GST_PAD_NAME(peer->peer)); } } */ typedef struct { gchar *srcpadname; GstPad *target; } dyn_connect; static void have_eos (void) { DEBUG ("I have eos on the first element\n"); exit (0); } static void dynamic_connect (GstElement *element, GstPad *newpad, gpointer data) { dyn_connect *connect = (dyn_connect *)data; if (!strcmp (gst_pad_get_name (newpad), connect->srcpadname)) { gst_pad_connect (newpad, connect->target); } } static gchar * gst_parse_unique_name(gchar *type,gst_parse_priv *priv) { gint count; count = GPOINTER_TO_INT(g_hash_table_lookup(priv->elementcounts,type)); count++; g_hash_table_insert(priv->elementcounts,type,GINT_TO_POINTER(count)); return g_strdup_printf("%s%d",type,count-1); } static gint gst_parse_launch_cmdline(int argc,char *argv[],GstBin *parent,gst_parse_priv *priv) { gint i = 0; gchar *arg; GstElement *element = NULL, *previous = NULL, *prevelement = NULL; gchar closingchar = '\0'; gint len; gchar *ptr; gchar *sinkpadname = NULL, *srcpadname = NULL; GstPad *sinkpad = NULL, *srcpad = NULL; GList *pads; gint elementcount = 0; gint retval = 0; priv->binlevel++; if (GST_IS_PIPELINE(parent)) { closingchar = '\0';DEBUG("in pipeline "); } else if (GST_IS_THREAD(parent)) { closingchar = '}';DEBUG("in thread "); } else { closingchar = ')';DEBUG("in bin "); } DEBUG_NOPREFIX("%s\n",GST_ELEMENT_NAME (GST_ELEMENT (parent))); while (i < argc) { arg = argv[i]; // FIXME this is a lame solution for problems with the first parser if (arg == NULL) { i++;continue; } len = strlen(arg); element = NULL; DEBUG("** ARGUMENT is '%s'\n",arg); // a null that slipped through the reconstruction if (len == 0) { DEBUG("random arg, FIXME\n"); i++; continue; // end of the container } else if (arg[0] == closingchar) { // time to finish off this bin DEBUG("exiting container %s\n",GST_ELEMENT_NAME (GST_ELEMENT (parent))); retval = i+1; break; // a pad connection } else if ((ptr = strchr(arg,'!'))) { DEBUG("attempting to connect pads together....\n"); // if it starts with the ! if (arg[0] == '!') { srcpadname = NULL; // if there's a sinkpad... if (len > 1) sinkpadname = &arg[1]; else sinkpadname = NULL; } else { srcpadname = g_strndup(arg,(ptr-arg)); // if there's a sinkpad if (len > (ptr-arg)+1) sinkpadname = &ptr[1]; else sinkpadname = NULL; } GST_DEBUG(0,"have srcpad %s, sinkpad %s\n",srcpadname,sinkpadname); srcpad = NULL; // if the srcpadname doesn't have any commas in it, find an actual pad if (!srcpadname || !strchr(srcpadname,',')) { if (srcpadname != NULL) { srcpad = gst_element_get_pad(previous,srcpadname); if (!srcpad) { GST_DEBUG(0,"NO SUCH pad %s in element %s\n",srcpadname,GST_ELEMENT_NAME(previous)); } } else if (srcpad == NULL) { // check through the list to find the first sink pad GST_DEBUG(0,"CHECKING through element %s for pad named %s\n",GST_ELEMENT_NAME(previous),srcpadname); pads = gst_element_get_pad_list(previous); while (pads) { srcpad = GST_PAD(pads->data); GST_DEBUG(0,"have pad %s:%s\n",GST_DEBUG_PAD_NAME(srcpad)); if (GST_IS_GHOST_PAD(srcpad)) GST_DEBUG(0,"it's a ghost pad\n"); pads = g_list_next (pads); if (gst_pad_get_direction (srcpad) == GST_PAD_SRC) break; srcpad = NULL; } if (!srcpad) GST_DEBUG(0,"error, can't find a src pad!!!\n"); else GST_DEBUG(0,"have src pad %s:%s\n",GST_DEBUG_PAD_NAME(srcpad)); } } // argument with = in it } else if (strstr(arg, "=")) { gchar * argname; gchar * argval; gchar * pos = strstr(arg, "="); // we have an argument argname = arg; pos[0] = '\0'; argval = pos+1; DEBUG("attempting to set argument '%s' to '%s' on element '%s'\n", argname,argval,GST_ELEMENT_NAME(previous)); //gtk_object_set(GTK_OBJECT(previous),argname,argval,NULL); gst_util_set_object_arg (GTK_OBJECT(previous), argname, argval); g_free(argname); // element or argument, or beginning of bin or thread } else { DEBUG("have element or bin/thread\n"); // if we have a bin or thread starting if (strchr("({",arg[0])) { if (arg[0] == '(') { // create a bin and add it to the current parent element = gst_bin_new(g_strdup_printf("bin%d",priv->bincount++)); if (!element) { fprintf(stderr,"Couldn't create a bin!\n"); // exit(-1); } GST_DEBUG(0,"CREATED bin %s\n",GST_ELEMENT_NAME(element)); } else if (arg[0] == '{') { // create a thread and add it to the current parent element = gst_thread_new(g_strdup_printf("thread%d",priv->threadcount++)); if (!element) { fprintf(stderr,"Couldn't create a thread!\n"); // exit(-1); } GST_DEBUG(0,"CREATED thread %s\n",GST_ELEMENT_NAME(element)); } i += gst_parse_launch_cmdline(argc - i, argv + i + 1, GST_BIN (element), priv); } else { // we have an element DEBUG("attempting to create element '%s'\n",arg); ptr = gst_parse_unique_name(arg,priv); element = gst_elementfactory_make(arg,ptr); g_free(ptr); if (!element) { fprintf(stderr,"Couldn't create a '%s', no such element or need to run gstreamer-register?\n",arg); exit(-1); } GST_DEBUG(0,"CREATED element %s\n",GST_ELEMENT_NAME(element)); } gst_bin_add (GST_BIN (parent), element); elementcount++; if (srcpad != NULL || srcpadname != NULL) { if (srcpad) DEBUG("need to connect to srcpad %s:%s\n",GST_DEBUG_PAD_NAME(srcpad)); sinkpad = NULL; if (sinkpadname != NULL) sinkpad = gst_element_get_pad(previous,sinkpadname); if (!sinkpad) { // check through the list to find the first sink pad pads = gst_element_get_pad_list(element); while (pads) { sinkpad = GST_PAD(pads->data); pads = g_list_next (pads); if (gst_pad_get_direction (sinkpad) == GST_PAD_SINK) break; sinkpad = NULL; } } if (!sinkpad) DEBUG("error, can't find a sink pad!!!\n"); else DEBUG("have sink pad %s:%s\n",GST_DEBUG_PAD_NAME(sinkpad)); if (!srcpad) { dyn_connect *connect = g_malloc (sizeof (dyn_connect)); connect->srcpadname = srcpadname; connect->target = sinkpad; GST_DEBUG(0,"SETTING UP dynamic connection %s:%s and %s:%s\n",gst_element_get_name (previous), srcpadname,GST_DEBUG_PAD_NAME(sinkpad)); gtk_signal_connect (GTK_OBJECT (previous), "new_pad", dynamic_connect, connect); } else { GST_DEBUG(0,"CONNECTING %s:%s and %s:%s\n",GST_DEBUG_PAD_NAME(srcpad),GST_DEBUG_PAD_NAME(sinkpad)); gst_pad_connect(srcpad,sinkpad); } sinkpad = NULL; srcpad = NULL; } // thomas: if we're the first element, connect eos signal if (elementcount == 1) { gtk_signal_connect (GTK_OBJECT (element), "eos", GTK_SIGNAL_FUNC (have_eos), NULL); } // if we're the first element, ghost all the sinkpads if (elementcount == 1) { DEBUG("first element, ghosting all of %s's sink pads to parent %s\n", GST_ELEMENT_NAME(element),GST_ELEMENT_NAME(GST_ELEMENT(parent))); pads = gst_element_get_pad_list (element); while (pads) { sinkpad = GST_PAD (pads->data); pads = g_list_next (pads); if (!sinkpad) DEBUG("much oddness, pad doesn't seem to exist\n"); else if (gst_pad_get_direction (sinkpad) == GST_PAD_SINK) { gst_element_add_ghost_pad (GST_ELEMENT (parent), sinkpad, g_strdup_printf("%s-ghost",GST_PAD_NAME(sinkpad))); GST_DEBUG(0,"GHOSTED %s:%s to %s as %s-ghost\n", GST_DEBUG_PAD_NAME(sinkpad),GST_ELEMENT_NAME(GST_ELEMENT(parent)),GST_PAD_NAME(sinkpad)); } } } previous = element; if (!GST_IS_BIN(element)) prevelement = element; } i++; } // ghost all the src pads of the bin if (prevelement != NULL) { DEBUG("last element, ghosting all of %s's src pads to parent %s\n", GST_ELEMENT_NAME(prevelement),GST_ELEMENT_NAME(GST_ELEMENT(parent))); pads = gst_element_get_pad_list (prevelement); while (pads) { srcpad = GST_PAD (pads->data); pads = g_list_next (pads); if (!srcpad) DEBUG("much oddness, pad doesn't seem to exist\n"); else if (gst_pad_get_direction (srcpad) == GST_PAD_SRC) { gst_element_add_ghost_pad (GST_ELEMENT (parent), srcpad, g_strdup_printf("%s-ghost",GST_PAD_NAME(srcpad))); GST_DEBUG(0,"GHOSTED %s:%s to %s as %s-ghost\n", GST_DEBUG_PAD_NAME(srcpad),GST_ELEMENT_NAME (parent),GST_PAD_NAME(srcpad)); } } } priv->binlevel--; if (retval) return retval; if (closingchar != '\0') DEBUG("returning IN THE WRONG PLACE\n"); else DEBUG("ending pipeline\n"); return i+1; } /** * gst_parse_launch: * @cmdline: the command line describing the pipeline * @parent: the parent bin for the resulting pipeline * * Create a new pipeline based on command line syntax. * * Returns: ? */ gint gst_parse_launch(const gchar *cmdline,GstBin *parent) { gst_parse_priv priv; gchar **argvn; gint newargc; gint i; const gchar *cp, *start, *end; gchar *temp; GSList *string_list = NULL, *slist; priv.bincount = 0; priv.threadcount = 0; priv.binlevel = 0; priv.elementcounts = NULL; priv.verbose = FALSE; priv.debug = FALSE; end = cmdline + strlen(cmdline); newargc = 0; temp = ""; // Extract the arguments to a gslist in reverse order for (cp = cmdline; cp < end; ) { i = strcspn(cp, "([{}]) \"\\"); if (i > 0) { temp = g_strconcat (temp, g_strndup (cp, i), NULL); // see if we have an escape char if (cp[i] != '\\') { // normal argument - copy and add to the list string_list = g_slist_prepend(string_list, temp); newargc++; temp = ""; } else { temp = g_strconcat (temp, g_strndup (&cp[++i], 1), NULL); } cp += i; } // skip spaces while (cp < end && *cp == ' ') { cp++; } // handle quoted arguments if (*cp == '"') { start = ++cp; // find matching quote while (cp < end && *cp != '"') cp++; // make sure we got it if (cp == end) { g_warning("gst_parse_launch: Unbalanced quote in command line"); // FIXME: The list leaks here return 0; } // copy the string sans quotes string_list = g_slist_prepend(string_list, g_strndup(start, cp - start)); newargc++; cp += 2; // skip the quote aswell } // brackets exist in a separate argument slot if (*cp && strchr("([{}])", *cp)) { string_list = g_slist_prepend(string_list, g_strndup(cp, 1)); newargc++; cp++; } } // now allocate the new argv array argvn = g_new0(char *,newargc); GST_DEBUG(0,"got %d args\n",newargc); // reverse the list and put the strings in the new array i = newargc; for (slist = string_list; slist; slist = slist->next) argvn[--i] = slist->data; g_slist_free(string_list); // print them out for (i=0;i