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gstreamer/gst/gst.c
Wim Taymans 12bbbd5c1e Lots of modifications to the plugin system. 
Original commit message from CVS:
Lots of modifications to the plugin system.
- Added a GstPluginfeature object that serves as a base class for all
plugin contents.
- changed the plugin API, everyhting is now added with
gst_plugin_add_feature
- typefactories are named now so that they can be located easily and filled
in at plugin load.
- mime types like "video/raw image/raw" are gone for now.
- lots of plugin updates (style and API changes)
- tested with an without registry.
- updates to various tools.
- added a little testsuite to test/show how you can load plugins (4 modes)

Test this one, Almost everything has changed :-)
2001-08-21 20:16:48 +00:00

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gst.c: Initialization and non-pipeline operations
*
* 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.
*/
#include <stdlib.h>
#include "gst_private.h"
#include "gstcpu.h"
#include "gsttype.h"
#include "gstplugin.h"
#include "gstbuffer.h"
#include "gstbin.h"
#include "gstpipeline.h"
#include "gstthread.h"
#include "gstqueue.h"
#include "gstautoplug.h"
#ifndef GST_DISABLE_TYPEFIND
#include "gsttypefind.h"
#endif
#define MAX_PATH_SPLIT 16
gchar *_gst_progname;
extern gint _gst_trace_on;
extern gboolean _gst_plugin_spew;
static gboolean gst_init_check (int *argc, gchar ***argv);
/**
* gst_init:
* @argc: pointer to application's argc
* @argv: pointer to application's argv
*
* Initializes the GStreamer library, setting up internal path lists,
* registering built-in elements, and loading standard plugins.
*/
void
gst_init (int *argc, char **argv[])
{
#ifndef GST_DISABLE_TRACE
GstTrace *gst_trace;
#endif
if (!g_thread_supported ()) g_thread_init (NULL);
#ifdef USE_GLIB2
g_type_init();
#else
{
gchar *display;
/* Only initialise gtk fully if we have an X display.
* FIXME: this fails if the display is specified differently, eg, by
* a command line parameter. This is okay though, since this is only
* a quick hack and should be replaced when we move to gobject.*/
display = g_getenv("DISPLAY");
if (display == NULL) {
gtk_type_init ();
} else {
gtk_init (argc,argv);
}
}
#endif
if (!gst_init_check (argc,argv)) {
exit (0); // FIXME!
}
GST_INFO (GST_CAT_GST_INIT, "Initializing GStreamer Core Library");
gst_elementfactory_get_type ();
gst_typefactory_get_type ();
gst_autoplugfactory_get_type ();
_gst_cpu_initialize ();
_gst_props_initialize ();
_gst_caps_initialize ();
_gst_plugin_initialize ();
_gst_buffer_initialize ();
_gst_buffer_pool_initialize ();
/* register some standard builtin types */
gst_elementfactory_new ("bin", gst_bin_get_type (), &gst_bin_details);
gst_elementfactory_new ("pipeline", gst_pipeline_get_type (), &gst_pipeline_details);
gst_elementfactory_new ("thread", gst_thread_get_type (), &gst_thread_details);
gst_elementfactory_new ("queue", gst_queue_get_type (), &gst_queue_details);
#ifndef GST_DISABLE_TYPEFIND
gst_elementfactory_new ("typefind", gst_typefind_get_type (), &gst_typefind_details);
#endif
#ifndef GST_DISABLE_TRACE
_gst_trace_on = 0;
if (_gst_trace_on) {
gst_trace = gst_trace_new ("gst.trace",1024);
gst_trace_set_default (gst_trace);
}
#endif // GST_DISABLE_TRACE
}
static void
gst_add_paths_func (const gchar *pathlist)
{
gchar **paths;
gint j = 0;
gchar *lastpath = g_strdup (pathlist);
while (lastpath) {
paths = g_strsplit (lastpath, G_SEARCHPATH_SEPARATOR_S, MAX_PATH_SPLIT);
g_free (lastpath);
lastpath = NULL;
while (paths[j]) {
GST_INFO (GST_CAT_GST_INIT, "Adding plugin path: \"%s\"", paths[j]);
gst_plugin_add_path (paths[j]);
if (++j == MAX_PATH_SPLIT) {
lastpath = g_strdup (paths[j]);
g_strfreev (paths);
j=0;
break;
}
}
}
}
/* returns FALSE if the program can be aborted */
static gboolean
gst_init_check (int *argc,
gchar ***argv)
{
gboolean ret = TRUE;
gboolean showhelp = FALSE;
_gst_progname = NULL;
if (argc && argv) {
gint i, j, k;
_gst_progname = g_strdup(*argv[0]);
for (i=1; i< *argc; i++) {
if (!strncmp ("--gst-info-mask=", (*argv)[i], 16)) {
guint32 val;
// handle either 0xHEX or dec
if (*((*argv)[i]+17) == 'x') {
sscanf ((*argv)[i]+18, "%08x", &val);
} else {
sscanf ((*argv)[i]+16, "%d", &val);
}
gst_info_set_categories (val);
(*argv)[i] = NULL;
}
else if (!strncmp ("--gst-debug-mask=", (*argv)[i], 17)) {
guint32 val;
// handle either 0xHEX or dec
if (*((*argv)[i]+18) == 'x') {
sscanf ((*argv)[i]+19, "%08x", &val);
} else {
sscanf ((*argv)[i]+17, "%d", &val);
}
gst_debug_set_categories (val);
(*argv)[i] = NULL;
}
else if (!strncmp ("--gst-mask=", (*argv)[i], 11)) {
guint32 val;
// handle either 0xHEX or dec
if (*((*argv)[i]+12) == 'x') {
sscanf ((*argv)[i]+13, "%08x", &val);
} else {
sscanf ((*argv)[i]+11, "%d", &val);
}
gst_debug_set_categories (val);
gst_info_set_categories (val);
(*argv)[i] = NULL;
}
else if (!strncmp ("--gst-plugin-spew", (*argv)[i], 17)) {
_gst_plugin_spew = TRUE;
(*argv)[i] = NULL;
}
else if (!strncmp ("--gst-plugin-path=", (*argv)[i], 17)) {
gst_add_paths_func ((*argv)[i]+18);
(*argv)[i] = NULL;
}
else if (!strncmp ("--help", (*argv)[i], 6)) {
showhelp = TRUE;
}
}
for (i = 1; i < *argc; i++) {
for (k = i; k < *argc; k++)
if ((*argv)[k] != NULL)
break;
if (k > i) {
k -= i;
for (j = i + k; j < *argc; j++)
(*argv)[j-k] = (*argv)[j];
*argc -= k;
}
}
}
if (_gst_progname == NULL) {
_gst_progname = g_strdup("gstprog");
}
/* check for ENV variables */
{
const gchar *plugin_path = g_getenv("GST_PLUGIN_PATH");
gst_add_paths_func (plugin_path);
}
if (showhelp) {
guint i;
g_print ("usage %s [OPTION...]\n", _gst_progname);
g_print ("\nGStreamer options\n");
g_print (" --gst-info-mask=FLAGS GST info flags to set (current %08x)\n", gst_info_get_categories());
g_print (" --gst-debug-mask=FLAGS GST debugging flags to set\n");
g_print (" --gst-mask=FLAGS GST info *and* debug flags to set\n");
g_print (" --gst-plugin-spew Enable printout of errors while loading GST plugins\n");
g_print (" --gst-plugin-path=PATH Add directories separated with '%s' to the plugin search path\n",
G_SEARCHPATH_SEPARATOR_S);
g_print ("\n Mask (to be OR'ed) info/debug FLAGS \n");
g_print ("--------------------------------------------------------\n");
for (i = 0; i<GST_CAT_MAX_CATEGORY; i++) {
if (gst_get_category_name(i)) {
#if GST_DEBUG_COLOR
g_print (" 0x%08x %s%s \033[%sm%s\033[00m\n", 1<<i,
(gst_info_get_categories() & (1<<i)?"(enabled)":" "),
(gst_debug_get_categories() & (1<<i)?"/(enabled)":"/ "),
_gst_category_colors[i], gst_get_category_name (i));
#else
g_print (" 0x%08x %s%s %s\n", 1<<i,
(gst_info_get_categories() & (1<<i)?"(enabled)":" "),
(gst_debug_get_categories() & (1<<i)?"/(enabled)":"/ "),
gst_get_category_name (i));
#endif
}
}
ret = FALSE;
}
return ret;
}
/**
* gst_main:
*
* Enter the main GStreamer processing loop
*/
void
gst_main (void)
{
#ifndef USE_GLIB2
gtk_main ();
#endif
}
/**
* gst_main_quit:
*
* Exits the main GStreamer processing loop
*/
void
gst_main_quit (void)
{
#ifndef USE_GLIB2
gtk_main_quit ();
#endif
}
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