MIDI 生成回调

from flask import Flask, request, jsonify
import json

app = Flask(__name__)

@app.route('/suno-midi-callback', methods=['POST'])
def handle_callback():
    data = request.json
    
    code = data.get('code')
    msg = data.get('msg')
    task_id = data.get('task_id')
    callback_data = data.get('data', {})
    
    print(f"收到 MIDI 生成回调: {task_id}, 状态: {code}, 消息: {msg}")
    
    if code == 200:
        # 任务成功完成
        print("MIDI 生成完成")
        
        if callback_data and 'instruments' in callback_data:
            instruments = callback_data['instruments']
            print(f"检测到 {len(instruments)} 个乐器")
            
            for instrument in instruments:
                name = instrument.get('name')
                notes = instrument.get('notes', [])
                print(f"\n乐器: {name}")
                print(f"  音符数量: {len(notes)}")
                
                # 处理每个音符
                for idx, note in enumerate(notes[:3]):  # 显示前3个音符
                    print(f"  音符 {idx + 1}: 音高 {note['pitch']}, "
                          f"起始 {note['start']}秒, 结束 {note['end']}秒, "
                          f"力度 {note['velocity']}")
            
            # 保存 MIDI 数据到文件
            with open(f"midi_{task_id}.json", "w") as f:
                json.dump(callback_data, f, indent=2)
            print(f"MIDI 数据已保存到 midi_{task_id}.json")
            
    else:
        # 任务失败
        print(f"MIDI 生成失败: {msg}")
        
        # 处理失败场景...
    
    # 返回 200 状态码确认收到回调
    return jsonify({'status': 'received'}), 200

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=3000)

<?php
header('Content-Type: application/json');

// 获取 POST 数据
$input = file_get_contents('php://input');
$data = json_decode($input, true);

$code = $data['code'] ?? null;
$msg = $data['msg'] ?? '';
$taskId = $data['task_id'] ?? '';
$callbackData = $data['data'] ?? null;

error_log("收到 MIDI 生成回调: $taskId, 状态: $code, 消息: $msg");

if ($code === 200) {
    // 任务成功完成
    error_log("MIDI 生成完成");
    
    if ($callbackData && isset($callbackData['instruments'])) {
        $instruments = $callbackData['instruments'];
        error_log("检测到 " . count($instruments) . " 个乐器");
        
        foreach ($instruments as $instrument) {
            $name = $instrument['name'] ?? '';
            $notes = $instrument['notes'] ?? [];
            error_log("乐器: $name");
            error_log("  音符数量: " . count($notes));
            
            // 处理前3个音符作为示例
            foreach (array_slice($notes, 0, 3) as $idx => $note) {
                error_log(sprintf(
                    "  音符 %d: 音高 %d, 起始 %s秒, 结束 %s秒, 力度 %s",
                    $idx + 1,
                    $note['pitch'],
                    $note['start'],
                    $note['end'],
                    $note['velocity']
                ));
            }
        }
        
        // 保存 MIDI 数据到文件
        $filename = "midi_$taskId.json";
        file_put_contents($filename, json_encode($callbackData, JSON_PRETTY_PRINT));
        error_log("MIDI 数据已保存到 $filename");
    }
    
} else {
    // 任务失败
    error_log("MIDI 生成失败: $msg");
    
    // 处理失败场景...
}

// 返回 200 状态码确认收到回调
http_response_code(200);
echo json_encode(['status' => 'received']);
?>