By Charvi on 2025-07-02 17:34 in Google Summer of Code Joomla Team

Report Period: June 26 - July 2, 2025

The seventh Joomla! AI Framework project discussion meeting was successfully held on June 27, 2025. The meeting was attended by Benjamin Trenkle, Charvi Mehra, Eoin Oliver, Tushar and Shivam Rajput.

Key Accomplishments

• June 26:
  • Created Interface/AudioInterface.php defining standard audio capabilities
  • Added core audio methods: speech(), getAvailableVoices(), getTTSModels(), getSupportedAudioFormats()
  • Enhanced OpenAIProvider with AudioInterface implementation for text-to-speech functionality
  • Implemented main TTS functionality supporting text, model, voice, and options parameters
  • Developed comprehensive audio testing with 4 scenarios:
    • Basic speech generation (tts-1 + alloy voice)
    • Different voice and WAV format (tts-1-hd + nova voice)
    • Advanced model with instructions (gpt-4o-mini-tts + coral voice)
    • Helper method validation (models, voices, formats)
• June 27:
  • Added transcribe() method to OpenAIProvider for audio-to-text conversion
  • Improved multipart form handling in AbstractProvider for audio file uploads
  • Created transcribe.php test suite covering:
    • Basic transcription with standard text extraction
    • Format testing across all response formats (text, srt, vtt)
  • Presented comprehensive work progress demonstrating:
    • Image variation and editing capabilities
    • Text-to-speech functionality
    • Transcription capability results
  • Discussed future development roadmap for upcoming weeks
• June 28:
  • Implemented translate() method for foreign language audio to English text conversion
  • Built buildTranslationFormData() method creating proper multipart form data for translation requests
  • Added translation.php test creating French audio via TTS, then translating to English
• June 30:
  • Created Interface/EmbeddingInterface.php defining standard embedding capabilities
  • Added text embedding functionality enabling vector representation conversion
• July 1:
  • Developed embeddings.php test suite for embedding functionality with single and multiple text inputs
  • Added comprehensive gpt-image-1 model testing:
    • Basic image generation
    • Single image editing
    • Editing with transparent background support
  • Implemented custom OpenAI server support with dynamic base URL configuration
  • Enhanced OpenAIProvider constructor with base_url option and official API fallback
  • Refactored endpoint management for flexible server configuration
• July 2:
  • Resolved multi-image editing functionality issues for gpt-image-1 model
  • Corrected API request parsing for multiple image requests
  • Added comprehensive test for gpt-image-1 model with multiple images

Next Steps

• Add comprehensive validations and error handling for all capabilities
• Implement exception management across chat, vision, image, audio, and embedding functionalities
• Enhance error messaging throughout the framework