video/format-utils.h

/* Simple Plugin API
 *
 * Copyright © 2018 Wim Taymans
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */
 
#ifndef SPA_PARAM_VIDEO_FORMAT_UTILS_H
#define SPA_PARAM_VIDEO_FORMAT_UTILS_H
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <spa/param/format-utils.h>
#include <spa/param/video/format.h>
#include <spa/param/video/raw-utils.h>
#include <spa/param/video/dsp-utils.h>
#include <spa/param/video/h264-utils.h>
#include <spa/param/video/mjpg-utils.h>
 
static inline int
spa_format_video_parse(const struct spa_pod *format, struct spa_video_info *info)
{
        int res;
 
        if ((res = spa_format_parse(format, &info->media_type, &info->media_subtype)) < 0)
                return res;
 
        if (info->media_type != SPA_MEDIA_TYPE_video)
                return -EINVAL;
 
        switch (info->media_subtype) {
        case SPA_MEDIA_SUBTYPE_raw:
                return spa_format_video_raw_parse(format, &info->info.raw);
        case SPA_MEDIA_SUBTYPE_dsp:
                return spa_format_video_dsp_parse(format, &info->info.dsp);
        case SPA_MEDIA_SUBTYPE_h264:
                return spa_format_video_h264_parse(format, &info->info.h264);
        case SPA_MEDIA_SUBTYPE_mjpg:
                return spa_format_video_mjpg_parse(format, &info->info.mjpg);
        }
        return -ENOTSUP;
}
 
static inline struct spa_pod *
spa_format_video_build(struct spa_pod_builder *builder, uint32_t id, struct spa_video_info *info)
{
        switch (info->media_subtype) {
        case SPA_MEDIA_SUBTYPE_raw:
                return spa_format_video_raw_build(builder, id, &info->info.raw);
        case SPA_MEDIA_SUBTYPE_dsp:
                return spa_format_video_dsp_build(builder, id, &info->info.dsp);
        case SPA_MEDIA_SUBTYPE_h264:
                return spa_format_video_h264_build(builder, id, &info->info.h264);
        case SPA_MEDIA_SUBTYPE_mjpg:
                return spa_format_video_mjpg_build(builder, id, &info->info.mjpg);
        }
        errno = ENOTSUP;
        return NULL;
}
 
#ifdef __cplusplus
} /* extern "C" */
#endif
 
#endif /* SPA_PARAM_VIDEO_FORMAT_UTILS_H */