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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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09141c6e1f
Since we started depending on GLib 2.44, we can be sure this macro is defined (it will be a no-op on compilers that don't support it). For plugins we should just start using `G_DECLARE_FINAL_TYPE` which means we no longer need the macro there, but for most types in core we don't want to break ABI, which means it's better to just keep it like it is (and use the `#ifdef` instead).
138 lines
4.6 KiB
C
138 lines
4.6 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstparse.h: get a pipeline from a text pipeline description
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_PARSE_H__
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#define __GST_PARSE_H__
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#include <gst/gstelement.h>
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G_BEGIN_DECLS
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GST_API
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GQuark gst_parse_error_quark (void);
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/**
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* GST_PARSE_ERROR:
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*
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* Get access to the error quark of the parse subsystem.
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*/
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#define GST_PARSE_ERROR gst_parse_error_quark ()
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/* FIXME 2.0: rename to GstParseLaunchError, this is not only related to
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*parsing */
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/**
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* GstParseError:
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* @GST_PARSE_ERROR_SYNTAX: A syntax error occurred.
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* @GST_PARSE_ERROR_NO_SUCH_ELEMENT: The description contained an unknown element
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* @GST_PARSE_ERROR_NO_SUCH_PROPERTY: An element did not have a specified property
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* @GST_PARSE_ERROR_LINK: There was an error linking two pads.
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* @GST_PARSE_ERROR_COULD_NOT_SET_PROPERTY: There was an error setting a property
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* @GST_PARSE_ERROR_EMPTY_BIN: An empty bin was specified.
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* @GST_PARSE_ERROR_EMPTY: An empty description was specified
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* @GST_PARSE_ERROR_DELAYED_LINK: A delayed link did not get resolved.
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*
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* The different parsing errors that can occur.
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*/
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typedef enum
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{
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GST_PARSE_ERROR_SYNTAX,
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GST_PARSE_ERROR_NO_SUCH_ELEMENT,
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GST_PARSE_ERROR_NO_SUCH_PROPERTY,
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GST_PARSE_ERROR_LINK,
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GST_PARSE_ERROR_COULD_NOT_SET_PROPERTY,
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GST_PARSE_ERROR_EMPTY_BIN,
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GST_PARSE_ERROR_EMPTY,
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GST_PARSE_ERROR_DELAYED_LINK
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} GstParseError;
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/**
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* GstParseFlags:
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* @GST_PARSE_FLAG_NONE: Do not use any special parsing options.
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* @GST_PARSE_FLAG_FATAL_ERRORS: Always return %NULL when an error occurs
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* (default behaviour is to return partially constructed bins or elements
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* in some cases)
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* @GST_PARSE_FLAG_NO_SINGLE_ELEMENT_BINS: If a bin only has a single element,
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* just return the element.
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* @GST_PARSE_FLAG_PLACE_IN_BIN: If more than one toplevel element is described
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* by the pipeline description string, put them in a #GstBin instead of a
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* #GstPipeline. (Since: 1.10)
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*
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* Parsing options.
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*/
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typedef enum
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{
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GST_PARSE_FLAG_NONE = 0,
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GST_PARSE_FLAG_FATAL_ERRORS = (1 << 0),
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GST_PARSE_FLAG_NO_SINGLE_ELEMENT_BINS = (1 << 1),
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GST_PARSE_FLAG_PLACE_IN_BIN = (1 << 2)
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} GstParseFlags;
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#define GST_TYPE_PARSE_CONTEXT (gst_parse_context_get_type())
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/**
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* GstParseContext:
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*
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* Opaque structure.
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*/
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typedef struct _GstParseContext GstParseContext;
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/* create, process and free a parse context */
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GST_API
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GType gst_parse_context_get_type (void);
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GST_API
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GstParseContext * gst_parse_context_new (void) G_GNUC_MALLOC;
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GST_API
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gchar ** gst_parse_context_get_missing_elements (GstParseContext * context) G_GNUC_MALLOC;
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GST_API
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void gst_parse_context_free (GstParseContext * context);
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GST_API
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GstParseContext * gst_parse_context_copy (const GstParseContext * context);
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/* parse functions */
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GST_API
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GstElement * gst_parse_launch (const gchar * pipeline_description,
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GError ** error) G_GNUC_MALLOC;
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GST_API
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GstElement * gst_parse_launchv (const gchar ** argv,
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GError ** error) G_GNUC_MALLOC;
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GST_API
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GstElement * gst_parse_launch_full (const gchar * pipeline_description,
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GstParseContext * context,
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GstParseFlags flags,
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GError ** error) G_GNUC_MALLOC;
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GST_API
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GstElement * gst_parse_launchv_full (const gchar ** argv,
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GstParseContext * context,
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GstParseFlags flags,
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GError ** error) G_GNUC_MALLOC;
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstParseContext, gst_parse_context_free)
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G_END_DECLS
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#endif /* __GST_PARSE_H__ */
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