static int parse_score_transform()

in libvmaf/src/read_json_model.c [186:274]

• 79 lines of code
• 26 McCabe index (conditional complexity)

static int parse_score_transform(json_stream *s, VmafModel *model)
{
    model->score_transform.enabled = false;
    while (json_peek(s) != JSON_OBJECT_END && !json_get_error(s)) {
        if (json_next(s) != JSON_STRING)
            return -EINVAL;

        const char *key = json_get_string(s, NULL);

        if (!strcmp(key, "enabled")) {
            if (json_peek(s) != JSON_TRUE && json_peek(s) != JSON_FALSE)
                return -EINVAL;
            model->score_transform.enabled = (json_next(s) == JSON_TRUE);
            continue;
        }

        if (!strcmp(key, "p0")) {
            if (json_peek(s) == JSON_NULL) {
                model->score_transform.p0.enabled = false;
            } else if (json_next(s) == JSON_NUMBER) {
                model->score_transform.p0.enabled = true;
                model->score_transform.p0.value = json_get_number(s);
            } else {
                return -EINVAL;
            }
            continue;
        }

        if (!strcmp(key, "p1")) {
            if (json_peek(s) == JSON_NULL) {
                model->score_transform.p1.enabled = false;
            } else if (json_next(s) == JSON_NUMBER) {
                model->score_transform.p1.enabled = true;
                model->score_transform.p1.value = json_get_number(s);
            } else {
                return -EINVAL;
            }
            continue;
        }

        if (!strcmp(key, "p2")) {
            if (json_peek(s) == JSON_NULL) {
                model->score_transform.p2.enabled = false;
            } else if (json_next(s) == JSON_NUMBER) {
                model->score_transform.p2.enabled = true;
                model->score_transform.p2.value = json_get_number(s);
            } else {
                return -EINVAL;
            }
            continue;
        }

        if (!strcmp(key, "knots")) {
            if (json_peek(s) == JSON_NULL) {
                model->score_transform.knots.enabled = false;
                model->score_transform.knots.n_knots = 0;
            } else if (json_next(s) == JSON_ARRAY) {
                int err = parse_knots(s, model);
                if (err) return err;
                json_skip_until(s, JSON_ARRAY_END);
            } else {
                return -EINVAL;
            }
            continue;
        }

        if (!strcmp(key, "out_lte_in")) {
            if (json_next(s) != JSON_STRING)
                return -EINVAL;
            const char *out_lte_in = json_get_string(s, NULL);
            if (!strcmp(out_lte_in, "true"))
                model->score_transform.out_lte_in = true;
            continue;
        }

        if (!strcmp(key, "out_gte_in")) {
            if (json_next(s) != JSON_STRING)
                return -EINVAL;
            const char *out_gte_in = json_get_string(s, NULL);
            if (!strcmp(out_gte_in, "true"))
                model->score_transform.out_gte_in = true;
            continue;
        }

        json_skip(s);
    }

    return 0;
}