pipewire/spa/include/spa/format-utils.h

/* 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.
 */

#ifndef __SPA_FORMAT_UTILS_H__
#define __SPA_FORMAT_UTILS_H__

#ifdef __cplusplus
extern "C" {
#endif

#include <stdarg.h>

#include <spa/format.h>
#include <spa/pod-parser.h>
#include <spa/type-map.h>

struct spa_type_media_type {
	uint32_t audio;
	uint32_t video;
	uint32_t image;
	uint32_t binary;
	uint32_t stream;
};

static inline void
spa_type_media_type_map(struct spa_type_map *map, struct spa_type_media_type *type)
{
	if (type->audio == 0) {
		type->audio = spa_type_map_get_id(map, SPA_TYPE_MEDIA_TYPE__audio);
		type->video = spa_type_map_get_id(map, SPA_TYPE_MEDIA_TYPE__video);
		type->image = spa_type_map_get_id(map, SPA_TYPE_MEDIA_TYPE__image);
		type->binary = spa_type_map_get_id(map, SPA_TYPE_MEDIA_TYPE__binary);
		type->stream = spa_type_map_get_id(map, SPA_TYPE_MEDIA_TYPE__stream);
	}
}

struct spa_type_media_subtype {
	uint32_t raw;
};

static inline void
spa_type_media_subtype_map(struct spa_type_map *map, struct spa_type_media_subtype *type)
{
	if (type->raw == 0) {
		type->raw = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__raw);
	}
}

struct spa_type_media_subtype_video {
	uint32_t h264;
	uint32_t mjpg;
	uint32_t dv;
	uint32_t mpegts;
	uint32_t h263;
	uint32_t mpeg1;
	uint32_t mpeg2;
	uint32_t mpeg4;
	uint32_t xvid;
	uint32_t vc1;
	uint32_t vp8;
	uint32_t vp9;
	uint32_t jpeg;
	uint32_t bayer;
};

static inline void
spa_type_media_subtype_video_map(struct spa_type_map *map,
				 struct spa_type_media_subtype_video *type)
{
	if (type->h264 == 0) {
		type->h264 = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__h264);
		type->mjpg = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__mjpg);
		type->dv = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__dv);
		type->mpegts = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__mpegts);
		type->h263 = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__h263);
		type->mpeg1 = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__mpeg1);
		type->mpeg2 = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__mpeg2);
		type->mpeg4 = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__mpeg4);
		type->xvid = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__xvid);
		type->vc1 = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__vc1);
		type->vp8 = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__vp8);
		type->vp9 = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__vp9);
		type->jpeg = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__jpeg);
		type->bayer = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__bayer);
	}
}

struct spa_type_media_subtype_audio {
	uint32_t mp3;
	uint32_t aac;
	uint32_t vorbis;
	uint32_t wma;
	uint32_t ra;
	uint32_t sbc;
	uint32_t adpcm;
	uint32_t g723;
	uint32_t g726;
	uint32_t g729;
	uint32_t amr;
	uint32_t gsm;
	uint32_t midi;
};

static inline void
spa_type_media_subtype_audio_map(struct spa_type_map *map,
				 struct spa_type_media_subtype_audio *type)
{
	if (type->mp3 == 0) {
		type->mp3 = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__mp3);
		type->aac = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__aac);
		type->vorbis = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__vorbis);
		type->wma = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__wma);
		type->ra = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__ra);
		type->sbc = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__sbc);
		type->adpcm = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__adpcm);
		type->g723 = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__g723);
		type->g726 = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__g726);
		type->g729 = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__g729);
		type->amr = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__amr);
		type->gsm = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__gsm);
		type->midi = spa_type_map_get_id(map, SPA_TYPE_MEDIA_SUBTYPE__midi);
	}
}

#define SPA_FORMAT_BODY_FOREACH(body, size, iter)							\
	for ((iter) = SPA_MEMBER((body), sizeof(struct spa_format_body), struct spa_pod_prop);		\
	     (iter) < SPA_MEMBER((body), (size), struct spa_pod_prop);					\
	     (iter) = SPA_MEMBER((iter), SPA_ROUND_UP_N(SPA_POD_SIZE(iter), 8), struct spa_pod_prop))

#define SPA_FORMAT_FOREACH(format, iter) \
	SPA_FORMAT_BODY_FOREACH(&format->body, SPA_POD_BODY_SIZE(format), iter)

#define SPA_FORMAT_MEDIA_TYPE(f)	SPA_POD_VALUE(struct spa_pod_id, &f->body.media_type)
#define SPA_FORMAT_MEDIA_SUBTYPE(f)	SPA_POD_VALUE(struct spa_pod_id, &f->body.media_subtype)

#define spa_format_parse(format,...)				\
({								\
	struct spa_pod_parser __p;				\
	const struct spa_format *__format = format;		\
	spa_pod_parser_pod(&__p, &__format->pod);		\
	spa_pod_parser_get(&__p, "<", ##__VA_ARGS__, NULL);	\
})

static inline struct spa_pod_prop *spa_format_find_prop(const struct spa_format *format, uint32_t key)
{
       return spa_pod_contents_find_prop(&format->pod, sizeof(struct spa_format), key);
}

static inline int spa_format_fixate(struct spa_format *format)
{
	struct spa_pod_prop *prop;

	SPA_FORMAT_FOREACH(format, prop)
		prop->body.flags &= ~SPA_POD_PROP_FLAG_UNSET;

	return SPA_RESULT_OK;
}

#ifdef __cplusplus
}  /* extern "C" */
#endif

#endif /* __SPA_FORMAT_UTILS_H__ */