| Current File : /home/kelaby89/www/wp/wp-content/plugins/trx_addons/addons/ai-helper/classes/StableDiffusion.php |
<?php
namespace TrxAddons\AiHelper;
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Class to make queries to the Stable Diffusion API
*/
class StableDiffusion extends Api {
/**
* The API to use: 'sd' - Stable Diffusion, 'ml' - ModelsLab
*
* @access private
*
* @var use_api The API to use
*/
var $use_api = '';
/**
* Plugin constructor.
*
* @access protected
*/
protected function __construct() {
parent::__construct();
$this->logger_section = 'stable-diffusion';
$this->token_option = 'ai_helper_token_stable_diffusion';
}
/**
* Return a base URL to the vendor site
*
* @param string $endpoint The endpoint to use
* @param string $type The type of the URL: api or site. Default: site
*
* @return string The URL to the vendor site
*/
public function get_url( $endpoint = '', $type = 'site' ) {
return $this->use_api == 'sd'
? \ThemeRex\StableDiffusion\Images::baseUrl( $endpoint, $type )
: \ThemeRex\ModelsLab\Images::baseUrl( $endpoint, $type );
}
/**
* Set the API to use: 'sd' - Stable Diffusion, 'ml' - ModelsLab
*
* @param string $use_api API to use
*/
public function set_api( $use_api ) {
$this->use_api = $use_api;
$this->api = null;
}
/**
* Return an object of the API
*
* @param string $token API token for the API
*
* @return api The object of the API
*/
public function get_api( $token = '' ) {
if ( empty( $this->api ) ) {
if ( empty( $token ) ) {
$token = $this->get_token();
}
if ( ! empty( $token ) ) {
if ( empty( $this->use_api ) ) {
$this->use_api = trx_addons_get_option( 'ai_helper_use_api_stable_diffusion', 'sd' );
}
$this->api = $this->use_api == 'sd'
? new \ThemeRex\StableDiffusion\Images( $token )
: new \ThemeRex\ModelsLab\Images( $token );
}
}
return $this->api;
}
/**
* Return a guidance scale for the API
*
* @access protected
*
* @return float Guidance scale for the API
*/
protected function get_guidance_scale() {
return (float)trx_addons_get_option( 'ai_helper_guidance_scale_stable_diffusion', 7.5 );
}
/**
* Return inference steps for the API
*
* @access protected
*
* @return int Inference steps for the API
*/
protected function get_inference_steps() {
return (int)trx_addons_get_option( 'ai_helper_inference_steps_stable_diffusion', 21 );
}
/**
* Prepare arguments for the API format
*
* @access protected
*
* @param array $args Arguments to prepare
*
* @return array Prepared arguments
*/
protected function prepare_args( $args ) {
// token => key
if ( ! isset( $args['key'] ) ) {
$args['key'] = $args['token'];
unset( $args['token'] );
}
// size => width, height
if ( ! isset( $args['width'] ) && ! empty( $args['size'] ) ) {
$size = explode( 'x', $args['size'] );
if ( count( $size ) == 2 ) {
$args['width'] = (int)$size[0];
$args['height'] = (int)$size[1];
}
}
unset( $args['size'] );
// n => samples
if ( ! isset( $args['samples'] ) && isset( $args['n'] ) ) {
$args['samples'] = max( 1, min( 4, (int)$args['n'] ) );
unset( $args['n'] );
}
// model => model_id
if ( ! isset( $args['model_id'] ) && isset( $args['model'] ) ) {
$args['model_id'] = $args['model'];
unset( $args['model'] );
}
if ( ! empty( $args['model_id'] ) ) {
$args['model_id'] = str_replace(
array( 'stable-diffusion/default', 'stable-diffusion/' ),
array( '', '' ),
$args['model_id']
);
}
if ( empty( $args['model_id'] ) ) {
unset( $args['model_id'] );
}
// image => init_image
if ( ! isset( $args['init_image'] ) && isset( $args['image'] ) ) {
$args['init_image'] = $args['image'];
unset( $args['image'] );
}
// LoRA models and strength
if ( ! empty( $args['model_id'] ) && ! empty( $args['lora_model'] ) ) {
$parts = array_map( 'trim', explode( ',', $args['lora_model'] ) );
$lora_model = '';
$lora_strength = '';
foreach( $parts as $part ) {
$parts2 = array_map( 'trim', explode( '=', $part ) );
$lora_model .= ( $lora_model ? ',' : '' ) . $parts2[0];
if ( count( $parts2 ) > 1 ) {
$lora_strength .= ( $lora_strength ? ',' : '' ) . $parts2[1];
}
}
if ( ! empty( $lora_model ) ) {
$args['lora_model'] = $lora_model;
if ( ! empty( $lora_strength ) ) {
$args['lora_strength'] = $lora_strength;
}
} else {
unset( $args['lora_model'] );
}
}
return $args;
}
/**
* Get a list of available models
*
* @access public
*
* @param array $args Query arguments
*
* @return array Response from the API
*/
public function list_models( $args = array(), $type = 'stable_diffusion' ) {
$args = array_merge( array(
'token' => $this->get_token(),
), $args );
// Prepare arguments for SD API format
$args = $this->prepare_args( $args );
$response = false;
if ( ! empty( $args['key'] ) ) {
$api = $this->get_api( $args['key'] );
$response = $api->listModels( $args );
if ( is_array( $response ) ) {
if ( ! empty( $type ) && $type != 'all' && is_array( $response ) ) {
foreach( $response as $k => $v ) {
if ( ! empty( $v['model_category'] ) && strpos( $v['model_category'], $type ) === false ) {
unset( $response[ $k ] );
}
}
}
} else {
$response = false;
}
}
return $response;
}
/**
* Generate images via API
*
* @access public
*
* @param array $args Query arguments
*
* @return array Response from the API
*/
public function generate_images( $args = array() ) {
$args = array_merge( array(
'token' => $this->get_token(),
'prompt' => '',
'negative_prompt' => '',
'size' => '1024x1024',
'n' => 1,
'model' => '',
'num_inference_steps' => (int)$this->get_inference_steps(),
'guidance_scale' => (float)$this->get_guidance_scale()
), $args );
// Save a model name for the log
$model = str_replace( 'stable-diffusion/', '', ! empty( $args['model'] ) ? $args['model'] : 'stable-diffusion/default' );
$args_orig = $args;
// Prepare arguments for SD API format
$args = $this->prepare_args( $args );
$response = false;
if ( ! empty( $args['key'] ) && ! empty( $args['prompt'] ) ) {
$api = $this->get_api( $args['key'] );
$response = $api->textToImage( $args );
if ( is_array( $response ) ) {
$this->logger->log( $response, $model, $args_orig, $this->logger_section );
} else {
$response = false;
}
}
return $response;
}
/**
* Make variations of the image via API
*
* @access public
*
* @param array $args Query arguments
*
* @return array Response from the API
*/
public function make_variations( $args = array() ) {
$args = array_merge( array(
'token' => $this->get_token(),
'prompt' => '',
'image' => '',
'size' => '1024x1024',
'n' => 1,
'model' => '',
'num_inference_steps' => (int)$this->get_inference_steps(),
'guidance_scale' => (float)$this->get_guidance_scale()
), $args );
// Save a model name for the log
$model = str_replace( 'stable-diffusion/', '', ! empty( $args['model'] ) ? $args['model'] : 'stable-diffusion/default' );
$args_orig = $args;
// Prepare arguments for SD API format
$args = $this->prepare_args( $args );
$response = false;
if ( ! empty( $args['key'] ) && ! empty( $args['init_image'] ) ) {
$api = $this->get_api( $args['key'] );
if ( empty( $args['prompt'] ) ) {
$args['prompt'] = __( 'Make variations of the image.', 'trx_addons' );
}
$response = $api->imageToImage( $args );
if ( is_array( $response ) ) {
$this->logger->log( $response, $model, $args_orig, $this->logger_section );
} else {
$response = false;
}
}
return $response;
}
/**
* Upscale the image via API
*
* @access public
*
* @param array $args Query arguments
*
* @return array Response from the API
*/
public function upscale( $args = array() ) {
$args = array_merge( array(
'token' => $this->get_token(),
'model' => 'default',
'image' => '',
'scale' => 2,
), $args );
// Save a model name for the log
$model = str_replace( 'stable-diffusion/', '', ! empty( $args['model'] ) ? $args['model'] : 'stable-diffusion/upscale-sd-default' );
$args_orig = $args;
// Prepare arguments for SD API format
$args = $this->prepare_args( $args );
unset( $args['model'] );
unset( $args['model_id'] );
$upscalers = Lists::get_sd_upscalers();
if ( ! empty( $upscalers[ $model ]['model_id'] ) ) {
$args['model_id'] = $upscalers[ $model ]['model_id'];
}
if ( ! empty( $args['init_image'] ) ) {
$args['url'] = $args['init_image'];
unset( $args['init_image'] );
}
$response = false;
if ( ! empty( $args['key'] ) && ! empty( $args['url'] ) ) {
$api = $this->get_api( $args['key'] );
$response = $api->imageUpscale( $args );
if ( is_array( $response ) ) {
if ( ! empty( $response['output'] ) && ! is_array( $response['output'] ) ) {
$response['output'] = array( $response['output'] );
}
$this->logger->log( $response, $model, $args_orig, $this->logger_section );
} else {
$response = false;
}
}
return $response;
}
/**
* Fetch queued images via API
*
* @access public
*
* @param array $args Query arguments
*
* @return array Response from the API
*/
public function fetch_images( $args = array() ) {
$args = array_merge( array(
'token' => $this->get_token(),
'fetch_url' => '',
'fetch_id' => '',
), $args );
// Prepare arguments for SD API format
$args = $this->prepare_args( $args );
$response = false;
if ( ! empty( $args['key'] ) && ! empty( $args['fetch_id'] ) ) {
$api = $this->get_api( $args['key'] );
$response = $api->fetchImages( $args );
if ( ! is_array( $response ) ) {
$response = false;
}
}
return $response;
}
}