/**
 * @license
 * Copyright 2025 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { ImagenImageFormat } from '../../requests/imagen-image-format';
/**
 * Parameters for configuring an <code>{@link ImagenModel}</code>.
 *
 * @beta
 */
export interface ImagenModelParams {
    /**
     * The Imagen model to use for generating images.
     * For example: `imagen-3.0-generate-002`.
     *
     * Only Imagen 3 models (named `imagen-3.0-*`) are supported.
     *
     * See {@link https://firebase.google.com/docs/vertex-ai/models | model versions}
     * for a full list of supported Imagen 3 models.
     */
    model: string;
    /**
     * Configuration options for generating images with Imagen.
     */
    generationConfig?: ImagenGenerationConfig;
    /**
     * Safety settings for filtering potentially inappropriate content.
     */
    safetySettings?: ImagenSafetySettings;
}
/**
 * Configuration options for generating images with Imagen.
 *
 * See the {@link http://firebase.google.com/docs/vertex-ai/generate-images-imagen | documentation} for
 * more details.
 *
 * @beta
 */
export interface ImagenGenerationConfig {
    /**
     * A description of what should be omitted from the generated images.
     *
     * Support for negative prompts depends on the Imagen model.
     *
     * See the {@link http://firebase.google.com/docs/vertex-ai/model-parameters#imagen | documentation} for more details.
     */
    negativePrompt?: string;
    /**
     * The number of images to generate. The default value is 1.
     *
     * The number of sample images that may be generated in each request depends on the model
     * (typically up to 4); see the <a href="http://firebase.google.com/docs/vertex-ai/model-parameters#imagen"><code>sampleCount</code></a>
     * documentation for more details.
     */
    numberOfImages?: number;
    /**
     * The aspect ratio of the generated images. The default value is square 1:1.
     * Supported aspect ratios depend on the Imagen model, see <code>{@link ImagenAspectRatio}</code>
     * for more details.
     */
    aspectRatio?: ImagenAspectRatio;
    /**
     * The image format of the generated images. The default is PNG.
     *
     * See <code>{@link ImagenImageFormat}</code> for more details.
     */
    imageFormat?: ImagenImageFormat;
    /**
     * Whether to add an invisible watermark to generated images.
     *
     * If set to `true`, an invisible SynthID watermark is embedded in generated images to indicate
     * that they are AI generated. If set to `false`, watermarking will be disabled.
     *
     * For Imagen 3 models, the default value is `true`; see the <a href="http://firebase.google.com/docs/vertex-ai/model-parameters#imagen"><code>addWatermark</code></a>
     * documentation for more details.
     */
    addWatermark?: boolean;
}
/**
 * A filter level controlling how aggressively to filter sensitive content.
 *
 * Text prompts provided as inputs and images (generated or uploaded) through Imagen on Vertex AI
 * are assessed against a list of safety filters, which include 'harmful categories' (for example,
 * `violence`, `sexual`, `derogatory`, and `toxic`). This filter level controls how aggressively to
 * filter out potentially harmful content from responses. See the {@link http://firebase.google.com/docs/vertex-ai/generate-images | documentation }
 * and the {@link https://cloud.google.com/vertex-ai/generative-ai/docs/image/responsible-ai-imagen#safety-filters | Responsible AI and usage guidelines}
 * for more details.
 *
 * @beta
 */
export declare enum ImagenSafetyFilterLevel {
    /**
     * The most aggressive filtering level; most strict blocking.
     */
    BLOCK_LOW_AND_ABOVE = "block_low_and_above",
    /**
     * Blocks some sensitive prompts and responses.
     */
    BLOCK_MEDIUM_AND_ABOVE = "block_medium_and_above",
    /**
     * Blocks few sensitive prompts and responses.
     */
    BLOCK_ONLY_HIGH = "block_only_high",
    /**
     * The least aggressive filtering level; blocks very few sensitive prompts and responses.
     *
     * Access to this feature is restricted and may require your case to be reviewed and approved by
     * Cloud support.
     */
    BLOCK_NONE = "block_none"
}
/**
 * A filter level controlling whether generation of images containing people or faces is allowed.
 *
 * See the <a href="http://firebase.google.com/docs/vertex-ai/generate-images"><code>personGeneration</code></a>
 * documentation for more details.
 *
 * @beta
 */
export declare enum ImagenPersonFilterLevel {
    /**
     * Disallow generation of images containing people or faces; images of people are filtered out.
     */
    BLOCK_ALL = "dont_allow",
    /**
     * Allow generation of images containing adults only; images of children are filtered out.
     *
     * Generation of images containing people or faces may require your use case to be
     * reviewed and approved by Cloud support; see the {@link https://cloud.google.com/vertex-ai/generative-ai/docs/image/responsible-ai-imagen#person-face-gen | Responsible AI and usage guidelines}
     * for more details.
     */
    ALLOW_ADULT = "allow_adult",
    /**
     * Allow generation of images containing adults only; images of children are filtered out.
     *
     * Generation of images containing people or faces may require your use case to be
     * reviewed and approved by Cloud support; see the {@link https://cloud.google.com/vertex-ai/generative-ai/docs/image/responsible-ai-imagen#person-face-gen | Responsible AI and usage guidelines}
     * for more details.
     */
    ALLOW_ALL = "allow_all"
}
/**
 * Settings for controlling the aggressiveness of filtering out sensitive content.
 *
 * See the {@link http://firebase.google.com/docs/vertex-ai/generate-images | documentation }
 * for more details.
 *
 * @beta
 */
export interface ImagenSafetySettings {
    /**
     * A filter level controlling how aggressive to filter out sensitive content from generated
     * images.
     */
    safetyFilterLevel?: ImagenSafetyFilterLevel;
    /**
     * A filter level controlling whether generation of images containing people or faces is allowed.
     */
    personFilterLevel?: ImagenPersonFilterLevel;
}
/**
 * Aspect ratios for Imagen images.
 *
 * To specify an aspect ratio for generated images, set the `aspectRatio` property in your
 * <code>{@link ImagenGenerationConfig}</code>.
 *
 * See the the {@link http://firebase.google.com/docs/vertex-ai/generate-images | documentation }
 * for more details and examples of the supported aspect ratios.
 *
 * @beta
 */
export declare enum ImagenAspectRatio {
    /**
     * Square (1:1) aspect ratio.
     */
    SQUARE = "1:1",
    /**
     * Landscape (3:4) aspect ratio.
     */
    LANDSCAPE_3x4 = "3:4",
    /**
     * Portrait (4:3) aspect ratio.
     */
    PORTRAIT_4x3 = "4:3",
    /**
     * Landscape (16:9) aspect ratio.
     */
    LANDSCAPE_16x9 = "16:9",
    /**
     * Portrait (9:16) aspect ratio.
     */
    PORTRAIT_9x16 = "9:16"
}