🏖️ Summer Update: Retro cleanup, QOL, optimized JPEG output

generate.php

@@ -0,0 +1,101 @@
+<?php
+// generate.php
+session_start();
+ini_set('max_execution_time', '300');
+header('Content-Type: text/html; charset=iso-8859-1');
+
+// Input values
+$prompt = $_POST['prompt'] ?? '';
+$negative_prompt = $_POST['negative_prompt'] ?? '';
+$width = isset($_POST['width']) ? (int)$_POST['width'] : 512;
+$height = isset($_POST['height']) ? (int)$_POST['height'] : 512;
+$steps = isset($_POST['steps']) ? (int)$_POST['steps'] : 20;
+$cfg_scale = isset($_POST['cfg_scale']) ? (float)$_POST['cfg_scale'] : 7.5;
+$sampler = $_POST['sampler'] ?? 'Euler';
+
+// Input validation
+if (strpos($prompt, '<') !== false || strpos($prompt, '>') !== false) {
+    die("Error: Angle brackets are not allowed in prompts.");
+}
+
+// Convert LORA-style square bracket syntax
+$processed_prompt = preg_replace('/\[([\w\s\-]+?):([\d\.]+)\]/', '<lora:$1:$2>', $prompt);
+
+// Build request
+$data = array(
+    'prompt' => $processed_prompt,
+    'negative_prompt' => $negative_prompt,
+    'steps' => $steps,
+    'width' => $width,
+    'height' => $height,
+    'cfg_scale' => $cfg_scale,
+    'sampler_name' => $sampler,
+    'override_settings' => new stdClass(),
+    'override_settings_restore_afterwards' => true
+);
+
+// Call Stable Diffusion API
+$ch = curl_init('http://127.0.0.1:7860/sdapi/v1/txt2img');
+curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+curl_setopt($ch, CURLOPT_POST, true);
+curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
+curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
+$result = curl_exec($ch);
+curl_close($ch);
+
+if (!$result) {
+    die("Error: Failed to communicate with the image generation API.");
+}
+
+$decoded = json_decode($result, true);
+if (!isset($decoded['images'][0])) {
+    die("Error: No image returned.");
+}
+
+// Decode base64 PNG
+$image_data = base64_decode($decoded['images'][0]);
+
+// Save original PNG temporarily
+$temp_png = 'temp_' . time() . '_' . bin2hex(random_bytes(8)) . '.png';
+file_put_contents($temp_png, $image_data);
+
+// Convert PNG to JPG with ImageMagick
+$generated_image = 'generated_' . time() . '_' . bin2hex(random_bytes(8)) . '.jpg';
+$quality = 75;
+$cmd = "convert \"$temp_png\" -strip -interlace Plane -gaussian-blur 0.05 -quality $quality -sampling-factor 4:2:0 \"$generated_image\" 2>&1";
+exec($cmd, $output, $returnVar);
+
+// Get image size info
+if ($returnVar !== 0 || !file_exists($generated_image)) {
+    $generated_image = $temp_png;
+    $size_info = null;
+} else {
+    $originalSize = filesize($temp_png);
+    $convertedSize = filesize($generated_image);
+    unlink($temp_png);
+
+    $size_info = array(
+        'original' => round($originalSize / 1024, 2),
+        'converted' => round($convertedSize / 1024, 2),
+        'reduction' => round((($originalSize - $convertedSize) / $originalSize) * 100, 2)
+    );
+}
+
+// Save result to session
+$_SESSION['result'] = array(
+    'generated_image' => $generated_image,
+    'prompt' => $prompt,
+    'negative_prompt' => $negative_prompt,
+    'processed_prompt' => $processed_prompt,
+    'width' => $width,
+    'height' => $height,
+    'steps' => $steps,
+    'cfg_scale' => $cfg_scale,
+    'sampler' => $sampler,
+    'size_info' => $size_info
+);
+
+// Redirect to result page
+header("Location: result.php");
+exit;
+