/*

 * Copyright (c) 2020 Jun Zhao<barryjzhao@tencent.com>

 *

 * This file is part of FFmpeg.

 *

 * FFmpeg is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * FFmpeg 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with FFmpeg; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

 */

#include <string.h>

#include "dovi_meta.h"

#include "mem.h"

AVDOVIDecoderConfigurationRecord *av_dovi_alloc(size_t *size)

{

    AVDOVIDecoderConfigurationRecord *dovi =

        av_mallocz(sizeof(AVDOVIDecoderConfigurationRecord));

    if (!dovi)

        return NULL;

     if (size)

        *size = sizeof(*dovi);

    return dovi;

}

typedef struct AVDOVIMetadataInternal {

    AVDOVIMetadata metadata;

    AVDOVIRpuDataHeader header;

    AVDOVIDataMapping mapping;

    AVDOVIColorMetadata color;

    AVDOVIDmData ext_blocks[AV_DOVI_MAX_EXT_BLOCKS];

} AVDOVIMetadataInternal;

AVDOVIMetadata *av_dovi_metadata_alloc(size_t *size)

{

    AVDOVIMetadataInternal *dovi = av_mallocz(sizeof(AVDOVIMetadataInternal));

    if (!dovi)

        return NULL;

    if (size)

        *size = sizeof(*dovi);

    dovi->metadata = (struct AVDOVIMetadata) {

        .header_offset      = offsetof(AVDOVIMetadataInternal, header),

        .mapping_offset     = offsetof(AVDOVIMetadataInternal, mapping),

        .color_offset       = offsetof(AVDOVIMetadataInternal, color),

        .ext_block_offset   = offsetof(AVDOVIMetadataInternal, ext_blocks),

        .ext_block_size     = sizeof(AVDOVIDmData),

    };

    return &dovi->metadata;

}

AVDOVIDmData *av_dovi_find_level(const AVDOVIMetadata *data, uint8_t level)

{

    for (int i = 0; i < data->num_ext_blocks; i++) {

        AVDOVIDmData *ext = av_dovi_get_ext(data, i);

        if (ext->level == level)

            return ext;

    }

    return NULL;

}