Function avformat_stream_group_create

libavformat/options.c:438–503

}

AVStreamGroup *avformat_stream_group_create(AVFormatContext *s,
                                            enum AVStreamGroupParamsType type,
                                            AVDictionary **options)
{
    AVStreamGroup **stream_groups;
    AVStreamGroup *stg;
    FFStreamGroup *stgi;

    stream_groups = av_realloc_array(s->stream_groups, s->nb_stream_groups + 1,
                                     sizeof(*stream_groups));
    if (!stream_groups)
        return NULL;
    s->stream_groups = stream_groups;

    stgi = av_mallocz(sizeof(*stgi));
    if (!stgi)
        return NULL;
    stg = &stgi->pub;

    stg->av_class = &stream_group_class;
    av_opt_set_defaults(stg);
    stg->type = type;
    switch (type) {
    case AV_STREAM_GROUP_PARAMS_IAMF_AUDIO_ELEMENT:
        stg->params.iamf_audio_element = av_iamf_audio_element_alloc();
        if (!stg->params.iamf_audio_element)
            goto fail;
        break;
    case AV_STREAM_GROUP_PARAMS_IAMF_MIX_PRESENTATION:
        stg->params.iamf_mix_presentation = av_iamf_mix_presentation_alloc();
        if (!stg->params.iamf_mix_presentation)
            goto fail;
        break;
    case AV_STREAM_GROUP_PARAMS_TILE_GRID:
        stg->params.tile_grid = av_mallocz(sizeof(*stg->params.tile_grid));
        if (!stg->params.tile_grid)
            goto fail;
        stg->params.tile_grid->av_class = &tile_grid_class;
        av_opt_set_defaults(stg->params.tile_grid);
        break;
    case AV_STREAM_GROUP_PARAMS_LCEVC:
        stg->params.lcevc = av_mallocz(sizeof(*stg->params.lcevc));
        if (!stg->params.lcevc)
            goto fail;
        stg->params.lcevc->av_class = &lcevc_class;
        av_opt_set_defaults(stg->params.lcevc);
        break;
    default:
        goto fail;
    }

    if (options) {
        if (av_opt_set_dict2(stg, options, AV_OPT_SEARCH_CHILDREN))
            goto fail;
    }

    stgi->fmtctx = s;
    stg->index   = s->nb_stream_groups;