--- /dev/null
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ * 2000 Wim Taymans <wtay@chello.be>
+ *
+ * :
+ *
+ * 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 <string.h>
+
+#include "gstparse.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;
+};
+
+/*
+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_get_name(pad),peer->name)) {
+ gst_pad_connect(pad,peer->peer);
+ gst_info("delayed connect of '%s' to '%s'\n",
+ gst_pad_get_name(pad),gst_pad_get_name(peer->peer));
+ }
+}
+*/
+
+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_get_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_get_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;
+ }
+
+ DEBUG("have sinkpad %s, srcpad %s\n",sinkpadname,srcpadname);
+
+ 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)
+ VERBOSE("NO SUCH pad %s in element %s\n",srcpadname,gst_element_get_name(previous));
+ }
+
+ if (srcpad == NULL) {
+ // check through the list to find the first sink pad
+ pads = gst_element_get_pad_list(previous);
+ while (pads) {
+ srcpad = GST_PAD(pads->data);
+ pads = g_list_next (pads);
+ if (gst_pad_get_direction (srcpad) == GST_PAD_SRC) break;
+ srcpad = NULL;
+ }
+ }
+
+ if (!srcpad) DEBUG("error, can't find a src pad!!!\n");
+ else DEBUG("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_get_name(previous));
+ gtk_object_set(GTK_OBJECT(previous),argname,argval,NULL);
+ 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);
+ }
+ VERBOSE("CREATED bin %s\n",gst_element_get_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);
+ }
+ VERBOSE("CREATED thread %s\n",gst_element_get_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);
+ element = gst_elementfactory_make(arg,gst_parse_unique_name(arg,priv));
+ if (!element) {
+ fprintf(stderr,"Couldn't create a '%s', no such element or need to run gstraemer-register?\n",arg);
+// exit(-1);
+ }
+ VERBOSE("CREATED element %s\n",gst_element_get_name(element));
+ DEBUG("created element %s\n",gst_element_get_name(element));
+ }
+
+ gst_bin_add (GST_BIN (parent), element);
+ elementcount++;
+
+ if (srcpad != NULL) {
+ DEBUG("need to connect to sinkpad %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));
+
+ VERBOSE("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;
+ }
+
+ // 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_get_name(element),gst_element_get_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);
+ DEBUG("ghosted %s:%s\n",GST_DEBUG_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_get_name(prevelement),gst_element_get_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);
+ DEBUG("ghosted %s:%s\n",GST_DEBUG_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;
+}
+
+gint gst_parse_launch(const gchar *cmdline,GstBin *parent) {
+ gst_parse_priv priv;
+ gchar **argvn;
+ gint newargc;
+ gint len;
+ int i,j,k;
+
+ priv.bincount = 0;
+ priv.threadcount = 0;
+ priv.binlevel = 0;
+ priv.elementcounts = NULL;
+ priv.verbose = FALSE;
+ priv.debug = FALSE;
+
+ // first walk through quickly and see how many more slots we need
+ len = strlen(cmdline);
+ newargc = 1;
+ for (i=0;i<len;i++) {
+ // if it's a space, it denotes a new arg
+ if (cmdline[i] == ' ') newargc++;
+ // if it's a brace and isn't followed by a space, give it an arg
+ if (strchr("([{}])",cmdline[i])) {
+ // not followed by space, gets one
+ if (cmdline[i+1] != ' ') newargc++;
+ }
+ }
+
+ // now allocate the new argv array
+ argvn = g_new0(char *,newargc+1);
+ DEBUG("supposed to have %d args\n",newargc);
+
+ // now attempt to construct the new arg list
+ j = 0;k = 0;
+ for (i=0;i<len+1;i++) {
+ // if it's a delimiter
+ if (strchr("([{}]) ",cmdline[i]) || (cmdline[i] == '\0')) {
+ // extract the previous arg
+ if (i-k > 0) {
+ if (cmdline[k] == ' ') k++;
+ argvn[j] = g_new0(char,(i-k)+1);
+ memcpy(argvn[j],&cmdline[k],i-k);
+
+ // catch misparses
+ if (strlen(argvn[j]) > 0) j++;
+ }
+ k = i;
+
+ // if this is a bracket, construct a word
+ if ((cmdline[i] != ' ') && (cmdline[i] != '\0')) {
+ argvn[j++] = g_strdup_printf("%c",cmdline[i]);
+ k++;
+ }
+ }
+ }
+
+ // print them out
+ for (i=0;i<newargc;i++) {
+ DEBUG("arg %d is: %s\n",i,argvn[i]);
+ }
+
+ // set up the elementcounts hash
+ priv.elementcounts = g_hash_table_new(g_str_hash,g_str_equal);
+
+ return gst_parse_launch_cmdline(newargc,argvn,parent,&priv);
+}
projects / platform / upstream / gstreamer.git / commitdiff