video/raw-utils.h

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/* 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_VIDEO_RAW_UTILS_H
#define SPA_VIDEO_RAW_UTILS_H

#ifdef __cplusplus
extern "C" {
#endif

#include <spa/pod/parser.h>
#include <spa/pod/builder.h>
#include <spa/param/video/raw.h>

static inline int
spa_format_video_raw_parse(const struct spa_pod *format,
                           struct spa_video_info_raw *info)
{
        info->flags = SPA_VIDEO_FLAG_NONE;
        if (spa_pod_find_prop (format, NULL, SPA_FORMAT_VIDEO_modifier)) {
                info->flags |= SPA_VIDEO_FLAG_MODIFIER;
        }

        return spa_pod_parse_object(format,
                SPA_TYPE_OBJECT_Format, NULL,
                SPA_FORMAT_VIDEO_format,                SPA_POD_OPT_Id(&info->format),
                SPA_FORMAT_VIDEO_modifier,              SPA_POD_OPT_Long(&info->modifier),
                SPA_FORMAT_VIDEO_size,                  SPA_POD_OPT_Rectangle(&info->size),
                SPA_FORMAT_VIDEO_framerate,             SPA_POD_OPT_Fraction(&info->framerate),
                SPA_FORMAT_VIDEO_maxFramerate,          SPA_POD_OPT_Fraction(&info->max_framerate),
                SPA_FORMAT_VIDEO_views,                 SPA_POD_OPT_Int(&info->views),
                SPA_FORMAT_VIDEO_interlaceMode,         SPA_POD_OPT_Id(&info->interlace_mode),
                SPA_FORMAT_VIDEO_pixelAspectRatio,      SPA_POD_OPT_Fraction(&info->pixel_aspect_ratio),
                SPA_FORMAT_VIDEO_multiviewMode,         SPA_POD_OPT_Id(&info->multiview_mode),
                SPA_FORMAT_VIDEO_multiviewFlags,        SPA_POD_OPT_Id(&info->multiview_flags),
                SPA_FORMAT_VIDEO_chromaSite,            SPA_POD_OPT_Id(&info->chroma_site),
                SPA_FORMAT_VIDEO_colorRange,            SPA_POD_OPT_Id(&info->color_range),
                SPA_FORMAT_VIDEO_colorMatrix,           SPA_POD_OPT_Id(&info->color_matrix),
                SPA_FORMAT_VIDEO_transferFunction,      SPA_POD_OPT_Id(&info->transfer_function),
                SPA_FORMAT_VIDEO_colorPrimaries,        SPA_POD_OPT_Id(&info->color_primaries));
}

static inline struct spa_pod *
spa_format_video_raw_build(struct spa_pod_builder *builder, uint32_t id,
                           struct spa_video_info_raw *info)
{
        struct spa_pod_frame f;
        spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, id);
        spa_pod_builder_add(builder,
                        SPA_FORMAT_mediaType,           SPA_POD_Id(SPA_MEDIA_TYPE_video),
                        SPA_FORMAT_mediaSubtype,        SPA_POD_Id(SPA_MEDIA_SUBTYPE_raw),
                        0);
        if (info->format != SPA_VIDEO_FORMAT_UNKNOWN)
                spa_pod_builder_add(builder,
                        SPA_FORMAT_VIDEO_format,        SPA_POD_Id(info->format), 0);
        if (info->size.width != 0 && info->size.height != 0)
                spa_pod_builder_add(builder,
                        SPA_FORMAT_VIDEO_size,          SPA_POD_Rectangle(&info->size), 0);
        if (info->framerate.denom != 0)
                spa_pod_builder_add(builder,
                        SPA_FORMAT_VIDEO_framerate,     SPA_POD_Fraction(&info->framerate), 0);
        if (info->modifier != 0 || info->flags & SPA_VIDEO_FLAG_MODIFIER)
                spa_pod_builder_add(builder,
                        SPA_FORMAT_VIDEO_modifier,      SPA_POD_Long(info->modifier), 0);
        if (info->max_framerate.denom != 0)
                spa_pod_builder_add(builder,
                        SPA_FORMAT_VIDEO_maxFramerate,  SPA_POD_Fraction(info->max_framerate), 0);
        if (info->views != 0)
                spa_pod_builder_add(builder,
                        SPA_FORMAT_VIDEO_views,         SPA_POD_Int(info->views), 0);
        if (info->interlace_mode != 0)
                spa_pod_builder_add(builder,
                        SPA_FORMAT_VIDEO_interlaceMode, SPA_POD_Id(info->interlace_mode), 0);
        if (info->pixel_aspect_ratio.denom != 0)
                spa_pod_builder_add(builder,
                        SPA_FORMAT_VIDEO_pixelAspectRatio,SPA_POD_Fraction(info->pixel_aspect_ratio), 0);
        if (info->multiview_mode != 0)
                spa_pod_builder_add(builder,
                        SPA_FORMAT_VIDEO_multiviewMode, SPA_POD_Id(info->multiview_mode), 0);
        if (info->multiview_flags != 0)
                spa_pod_builder_add(builder,
                        SPA_FORMAT_VIDEO_multiviewFlags,SPA_POD_Id(info->multiview_flags), 0);
        if (info->chroma_site != 0)
                spa_pod_builder_add(builder,
                        SPA_FORMAT_VIDEO_chromaSite,    SPA_POD_Id(info->chroma_site), 0);
        if (info->color_range != 0)
                spa_pod_builder_add(builder,
                        SPA_FORMAT_VIDEO_colorRange,    SPA_POD_Id(info->color_range), 0);
        if (info->color_matrix != 0)
                spa_pod_builder_add(builder,
                        SPA_FORMAT_VIDEO_colorMatrix,   SPA_POD_Id(info->color_matrix), 0);
        if (info->transfer_function != 0)
                spa_pod_builder_add(builder,
                        SPA_FORMAT_VIDEO_transferFunction,SPA_POD_Id(info->transfer_function), 0);
        if (info->color_primaries != 0)
                spa_pod_builder_add(builder,
                        SPA_FORMAT_VIDEO_colorPrimaries,SPA_POD_Id(info->color_primaries), 0);
        return (struct spa_pod*)spa_pod_builder_pop(builder, &f);
}

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

#endif /* SPA_VIDEO_RAW_UTILS_H */