pipewire/spa/lib/format.c
2017-03-24 18:11:11 +01:00

61 lines
2.1 KiB
C

/* Simple Plugin API
* Copyright (C) 2016 Wim Taymans <wim.taymans@gmail.com>
*
* 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.
*/
#include <stdint.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <spa/format-builder.h>
#include <spa/video/format-utils.h>
#include <lib/props.h>
#include <lib/mapper.h>
SpaResult
spa_format_filter (const SpaFormat *format,
const SpaFormat *filter,
SpaPODBuilder *result)
{
SpaPODFrame f;
SpaResult res;
if (format == NULL || result == NULL)
return SPA_RESULT_INVALID_ARGUMENTS;
if (filter == NULL) {
spa_pod_builder_raw_padded (result, format, SPA_POD_SIZE (format));
return SPA_RESULT_OK;
}
if (SPA_FORMAT_MEDIA_TYPE (filter) != SPA_FORMAT_MEDIA_TYPE (format) ||
SPA_FORMAT_MEDIA_SUBTYPE (filter) != SPA_FORMAT_MEDIA_SUBTYPE (format))
return SPA_RESULT_INVALID_MEDIA_TYPE;
spa_pod_builder_push_format (result, &f, filter->body.obj_body.type,
SPA_FORMAT_MEDIA_TYPE (filter),
SPA_FORMAT_MEDIA_SUBTYPE (filter));
res = spa_props_filter (result,
SPA_POD_CONTENTS (SpaFormat, format),
SPA_POD_CONTENTS_SIZE (SpaFormat, format),
SPA_POD_CONTENTS (SpaFormat, filter),
SPA_POD_CONTENTS_SIZE (SpaFormat, filter));
spa_pod_builder_pop (result, &f);
return res;
}