gstreamer/gst/gstqueryutils.c
Wim Taymans 8df6cd7243 Remove old query functions. Ported old code.
Original commit message from CVS:
Remove old query functions. Ported old code.
Added position/convert helper functions to gstutils.
Reordered gstpad.c code, grouping relevant things.
Remove gst_message_new(), always need to speficy a specific
message.
2005-05-09 10:53:13 +00:00

106 lines
3.1 KiB
C

/* GStreamer
* Copyright (C) 2005 Andy Wingo <wingo@pobox.com>
*
* gstqueryutils.c: Utility functions for creating and parsing GstQueries.
*
* 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 <stdarg.h>
#include "gstqueryutils.h"
#include "gstenumtypes.h"
#include "gstvalue.h"
#include "gst_private.h"
/* some macros are just waiting to be defined here */
void
gst_query_parse_seeking_query (GstQuery * query, GstFormat * format)
{
GstStructure *structure;
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_SEEKING);
structure = gst_query_get_structure (query);
if (format)
*format = g_value_get_enum (gst_structure_get_value (structure, "format"));
}
void
gst_query_set_seeking (GstQuery * query, GstFormat format,
gboolean seekable, gint64 segment_start, gint64 segment_end)
{
GstStructure *structure;
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_SEEKING);
structure = gst_query_get_structure (query);
gst_structure_set (structure,
"format", GST_TYPE_FORMAT, format,
"seekable", G_TYPE_BOOLEAN, seekable,
"segment-start", G_TYPE_INT64, segment_start,
"segment-end", G_TYPE_INT64, segment_end, NULL);
}
void
gst_query_parse_seeking_response (GstQuery * query, GstFormat * format,
gboolean * seekable, gint64 * segment_start, gint64 * segment_end)
{
GstStructure *structure;
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_SEEKING);
structure = gst_query_get_structure (query);
if (format)
*format = g_value_get_enum (gst_structure_get_value (structure, "format"));
if (seekable)
*seekable = g_value_get_boolean (gst_structure_get_value
(structure, "seekable"));
if (segment_start)
*segment_start = g_value_get_int64 (gst_structure_get_value
(structure, "segment-start"));
if (segment_end)
*segment_end = g_value_get_int64 (gst_structure_get_value
(structure, "segment-end"));
}
void
gst_query_set_formats (GstQuery * query, gint n_formats, ...)
{
va_list ap;
GValue list = { 0, };
GValue item = { 0, };
GstStructure *structure;
gint i;
g_value_init (&list, GST_TYPE_LIST);
va_start (ap, n_formats);
for (i = 0; i < n_formats; i++) {
g_value_init (&item, GST_TYPE_FORMAT);
g_value_set_enum (&item, va_arg (ap, GstFormat));
gst_value_list_append_value (&list, &item);
g_value_unset (&item);
}
va_end (ap);
structure = gst_query_get_structure (query);
gst_structure_set_value (structure, "formats", &list);
}