mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-28 03:00:35 +00:00
fdd5d22828
By default, gst_parse_launch_full() creates a GstPipeline if there's more than one toplevel element. Add a flag to let it use a GstBin instead. Also fix the parser to let it use this flag for GST_TYPE_ELEMENT property values, to avoid having GstPipelines inside other GstPipelines. https://bugzilla.gnome.org/show_bug.cgi?id=763457
130 lines
4.5 KiB
C
130 lines
4.5 KiB
C
/* GStreamer
|
|
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
|
|
* 2000 Wim Taymans <wtay@chello.be>
|
|
*
|
|
* gstparse.h: get a pipeline from a text pipeline description
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __GST_PARSE_H__
|
|
#define __GST_PARSE_H__
|
|
|
|
#include <gst/gstelement.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
GQuark gst_parse_error_quark (void);
|
|
/**
|
|
* GST_PARSE_ERROR:
|
|
*
|
|
* Get access to the error quark of the parse subsystem.
|
|
*/
|
|
#define GST_PARSE_ERROR gst_parse_error_quark ()
|
|
|
|
/* FIXME 2.0: rename to GstParseLaunchError, this is not only related to
|
|
*parsing */
|
|
/**
|
|
* GstParseError:
|
|
* @GST_PARSE_ERROR_SYNTAX: A syntax error occurred.
|
|
* @GST_PARSE_ERROR_NO_SUCH_ELEMENT: The description contained an unknown element
|
|
* @GST_PARSE_ERROR_NO_SUCH_PROPERTY: An element did not have a specified property
|
|
* @GST_PARSE_ERROR_LINK: There was an error linking two pads.
|
|
* @GST_PARSE_ERROR_COULD_NOT_SET_PROPERTY: There was an error setting a property
|
|
* @GST_PARSE_ERROR_EMPTY_BIN: An empty bin was specified.
|
|
* @GST_PARSE_ERROR_EMPTY: An empty description was specified
|
|
* @GST_PARSE_ERROR_DELAYED_LINK: A delayed link did not get resolved.
|
|
*
|
|
* The different parsing errors that can occur.
|
|
*/
|
|
typedef enum
|
|
{
|
|
GST_PARSE_ERROR_SYNTAX,
|
|
GST_PARSE_ERROR_NO_SUCH_ELEMENT,
|
|
GST_PARSE_ERROR_NO_SUCH_PROPERTY,
|
|
GST_PARSE_ERROR_LINK,
|
|
GST_PARSE_ERROR_COULD_NOT_SET_PROPERTY,
|
|
GST_PARSE_ERROR_EMPTY_BIN,
|
|
GST_PARSE_ERROR_EMPTY,
|
|
GST_PARSE_ERROR_DELAYED_LINK
|
|
} GstParseError;
|
|
|
|
/**
|
|
* GstParseFlags:
|
|
* @GST_PARSE_FLAG_NONE: Do not use any special parsing options.
|
|
* @GST_PARSE_FLAG_FATAL_ERRORS: Always return %NULL when an error occurs
|
|
* (default behaviour is to return partially constructed bins or elements
|
|
* in some cases)
|
|
* @GST_PARSE_FLAG_NO_SINGLE_ELEMENT_BINS: If a bin only has a single element,
|
|
* just return the element.
|
|
* @GST_PARSE_FLAG_PLACE_IN_BIN: If more than one toplevel element is described
|
|
* by the pipeline description string, put them in a #GstBin instead of a
|
|
* #GstPipeline. (Since 1.10)
|
|
*
|
|
* Parsing options.
|
|
*/
|
|
typedef enum
|
|
{
|
|
GST_PARSE_FLAG_NONE = 0,
|
|
GST_PARSE_FLAG_FATAL_ERRORS = (1 << 0),
|
|
GST_PARSE_FLAG_NO_SINGLE_ELEMENT_BINS = (1 << 1),
|
|
GST_PARSE_FLAG_PLACE_IN_BIN = (1 << 2)
|
|
} GstParseFlags;
|
|
|
|
#define GST_TYPE_PARSE_CONTEXT (gst_parse_context_get_type())
|
|
|
|
/**
|
|
* GstParseContext:
|
|
*
|
|
* Opaque structure.
|
|
*/
|
|
typedef struct _GstParseContext GstParseContext;
|
|
|
|
/* create, process and free a parse context */
|
|
|
|
GType gst_parse_context_get_type (void);
|
|
GstParseContext * gst_parse_context_new (void) G_GNUC_MALLOC;
|
|
|
|
gchar ** gst_parse_context_get_missing_elements (GstParseContext * context) G_GNUC_MALLOC;
|
|
|
|
void gst_parse_context_free (GstParseContext * context);
|
|
|
|
|
|
/* parse functions */
|
|
|
|
GstElement * gst_parse_launch (const gchar * pipeline_description,
|
|
GError ** error) G_GNUC_MALLOC;
|
|
|
|
GstElement * gst_parse_launchv (const gchar ** argv,
|
|
GError ** error) G_GNUC_MALLOC;
|
|
|
|
GstElement * gst_parse_launch_full (const gchar * pipeline_description,
|
|
GstParseContext * context,
|
|
GstParseFlags flags,
|
|
GError ** error) G_GNUC_MALLOC;
|
|
|
|
GstElement * gst_parse_launchv_full (const gchar ** argv,
|
|
GstParseContext * context,
|
|
GstParseFlags flags,
|
|
GError ** error) G_GNUC_MALLOC;
|
|
|
|
#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
|
|
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstParseContext, gst_parse_context_free)
|
|
#endif
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_PARSE_H__ */
|