gstreamer/gst/gst.c

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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);
WARNING: Don't grab this updated unless you're really, REALLY sure. Original commit message from CVS: WARNING: Don't grab this updated unless you're really, REALLY sure. WARNING: Wait for the next one. Whole lotta changes here, including a few random bits: examples/*/Makefile: updated to use `libtool gcc`, not just `gcc` gst/ gstbuffer.h: updated to new flag style gst.c, gstdebug.h: added new debugging for function ptrs gstpipeline.c: set type of parent_class to the class, not the object gstthread.c: ditto plugins/ cdparanoia/cdparanoia.c: added an argument type, updated some defaults cobin/spindentity.c: updated to new do/while loopfunction style mp3encode/lame/gstlame.c: argument types, whole lotta lame options tests/: various changes Now, for the big changes: Once again, the scheduling system has changed. And once again, it broke a whole bunch of things. The gist of the change is that there is now a function pointer for gst_pad_push and gst_pad_pull, instead of a hard-wired function. Well, currently they are functions, but that's for debugging purposes only, they just call the function pointer after spewing lots of DEBUG(). This changed the GstPad structure a bit, and the GstPad API as well. Where elements used to provide chain() and pull() functions, they provide chain() and get() functions. gst_pad_set_pull[region]_function has been changed to get_pad_set_get[region]_function. This means all the elements out there that used to have pull functions need to be updated. The calls to that function have been changed in the normal elements, but the names of the functions passed is still _pull[region](), which is an aesthetic issue more than anything. As for what doesn't work yet, just about anything dealing with Connections is hosed, meaning threaded stuff won't work. This will be fixed about 12 hours from now, after I've slept, etc. The simplefake.c test works in both cothreaded and chained cases, but not much else will work due to the Connection problem. Needless to say, don't grab this unless you *need* these features *now*, else wait to update this stuff until tomorrow. I'm going to sleep now.
2000-12-16 10:18:09 +00:00
/**
* 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 ();
#ifndef GST_DISABLE_AUTOPLUG
gst_autoplugfactory_get_type ();
#endif
_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
}