148 lines
4.6 KiB
PHP
148 lines
4.6 KiB
PHP
<?php
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/**
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*
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* AI Labs extension
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*
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* @copyright (c) 2023, privet.fun, https://privet.fun
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* @license GNU General Public License, version 2 (GPL-2.0)
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*
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*/
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namespace privet\ailabs\controller;
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use privet\ailabs\includes\GenericCurl;
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use privet\ailabs\includes\GenericController;
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use privet\ailabs\includes\resultSubmit;
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use privet\ailabs\includes\resultParse;
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/*
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config
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{
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"api_key": "<api-key>",
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"url_texttoimage": "https://api.stability.ai/v1/generation/stable-diffusion-xl-beta-v2-2-2/text-to-image",
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"cfg_scale": 7.5,
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"clip_guidance_preset": "FAST_BLUE",
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"height": 512,
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"width": 512,
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"samples": 1,
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"steps": 30
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}
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template
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[quote={poster_name} post_id={post_id} user_id={poster_id}]{request}[/quote]
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{response}{attachments}
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*/
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class stablediffusion extends GenericController
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{
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protected function prepare($opts)
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{
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return [
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'text_prompts' => [
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['text' => trim($this->job['request'])],
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],
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'cfg_scale' => $this->cfg->cfg_scale,
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'clip_guidance_preset' => $this->cfg->clip_guidance_preset,
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'height' => $this->cfg->height,
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'width' => $this->cfg->width,
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'samples' => $this->cfg->samples,
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'steps' => $this->cfg->steps,
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];
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}
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protected function submit($opts): resultSubmit
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{
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$api = new GenericCurl($this->cfg->api_key);
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$this->cfg->api_key = null;
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$result = new resultSubmit();
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// https://api.stability.ai/docs#tag/v1generation/operation/textToImage
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// https://api.stability.ai/v1/generation/stable-diffusion-xl-beta-v2-2-2/text-to-image
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$result->response = $api->sendRequest($this->cfg->url_texttoimage, 'POST', $opts);
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$result->responseCodes = $api->responseCodes;
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return $result;
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}
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protected function parse(resultSubmit $resultSubmit): resultParse
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{
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/*
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Response headers:
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Content-Type required string
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Enum: "application/json" | "image/png"
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Finish-Reason string (FinishReason)
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Enum: "SUCCESS" | "ERROR" | "CONTENT_FILTERED"
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The result of the generation process.
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SUCCESS indicates success
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ERROR indicates an error
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CONTENT_FILTERED indicates the result affected by the content filter and may be blurred.
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This header is only present when the Accept is set to image/png. Otherwise it is returned in the response body.
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Seed integer
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Example: 3817857576
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The seed used to generate the image. This header is only present when the Accept is set to image/png. Otherwise it is returned in the response body.
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Response HTTP 200:
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{
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"artifacts":[
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{
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"base64":"<encoded>",
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"seed":4188843142,
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"finishReason":"SUCCESS"
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}
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]
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}
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Response HTTP 400, 401, 404, 500:
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{
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"id": "A unique identifier for this particular occurrence of the problem.",
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"name": "The short-name of this class of errors e.g. bad_request.",
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"message": "A human-readable explanation specific to this occurrence of the problem."
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}
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*/
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$json = json_decode($resultSubmit->response);
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$images = null;
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$message = null;
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if (
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empty($json->artifacts) ||
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!empty($json->name) ||
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!empty($json->message) ||
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!in_array(200, $resultSubmit->responseCodes)
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) {
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if (!empty($json->message)) {
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$message = $json->message;
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}
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} else {
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$this->job['status'] = 'ok';
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$images = [];
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$ind = 0;
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foreach ($json->artifacts as $item) {
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if ($item->finishReason !== 'SUCCESS') {
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$message = $item->finishReason;
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if (!empty($item->base64))
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$item->base64 = '<reducted>';
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} else {
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$filename = $this->save_base64_to_temp_file($item->base64, $ind);
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array_push($images, $filename);
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$item->base64 = '<reducted>';
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}
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$ind++;
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}
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}
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$result = new resultParse();
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$result->json = $json;
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$result->images = $images;
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$result->message = $message;
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return $result;
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}
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}
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