Add 'auto' language code support for Whisper automatic language detection in AI Speech

Labels: enhancement, ai-speech

Description

The Oracle Cloud Infrastructure AI Speech API already supports automatic language detection using "auto" as a language code value, as documented in:

• Oracle Speech API Release Notes - Whisper Support
• Oracle Speech API Documentation - TranscriptionModelDetails

The OCI Python SDK supports this functionality via the LANGUAGE_CODE_AUTO = "auto" constant in TranscriptionModelDetails:

https://github.com/oracle/oci-python-sdk/blob/master/src/oci/ai_speech/models/transcription_model_details.py#L32

However, the Ruby SDK does not currently include this constant:

https://github.com/oracle/oci-ruby-sdk/blob/master/lib/oci/ai_speech/models/transcription_model_details.rb

Requested Enhancement

Add LANGUAGE_CODE_AUTO = "auto" constant to the TranscriptionModelDetails class in the Ruby SDK and include it in the LANGUAGE_CODE_ENUM array to match both the API specification and the Python SDK implementation.

Use Case

Automatic language detection allows the AI Speech service to automatically identify the spoken language in media files without requiring explicit language code specification. This is particularly useful for:

• Multi-language environments
• Unknown source languages
• Reducing manual locale mapping and configuration

Expected Implementation

LANGUAGE_CODE_AUTO = "auto".freeze

LANGUAGE_CODE_ENUM = [
  LANGUAGE_CODE_EN_US,
  LANGUAGE_CODE_ES_ES,
  # ... other language codes ...
  LANGUAGE_CODE_AUTO,
  LANGUAGE_CODE_UNKNOWN_ENUM_VALUE
].freeze

Open lib/oci/ai_speech/models/transcription_model_details.rb and compare its language constants and LANGUAGE_CODE_ENUM with the OCI API documentation and the Python SDK implementation. Done means the TranscriptionModelDetails class defines LANGUAGE_CODE_AUTO as "auto" and includes it in LANGUAGE_CODE_ENUM.