mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-02 04:35:55 +00:00
8df6cd7243
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.
107 lines
3.1 KiB
C
107 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);
|
|
}
|