Module: Cohere::Transcribe::Audio::FFmpegNative

Defined in:
lib/cohere/transcribe/audio/ffmpeg_native.rb

Overview

Lazy binding for the gem's subprocess-free libav decoder adapter. The adapter itself dynamically selects a compatible FFmpeg 4-8 runtime; Ruby never launches ffmpeg and does not retain a Python codec runtime.

Defined Under Namespace

Classes: Library

Constant Summary collapse

ERROR_CAPACITY = 
1_024
CANCELLED_STATUS = 
6

Class Method Summary collapse

Class Method Details

.available? ⇒ Boolean

Returns:

  • (Boolean) 


208
209
210
211
212
213
 
# File 'lib/cohere/transcribe/audio/ffmpeg_native.rb', line 208

def available?
  library
  true
rescue TranscriptionRuntimeError
  false
end

.cancel_active! ⇒ Object

Pipeline cleanup must not load FFmpeg merely to discover that no native decode has ever started. If the adapter is already resident, this wakes every operation that captured an older cancellation generation while preserving later independent calls.



239
240
241
242
243
244
 
# File 'lib/cohere/transcribe/audio/ffmpeg_native.rb', line 239

def cancel_active!
  Library.loaded&.cancel_all!
  nil
rescue Fiddle::DLError, TranscriptionRuntimeError
  nil
end

.cancel_all! ⇒ Object 



229
230
231
232
233
 
# File 'lib/cohere/transcribe/audio/ffmpeg_native.rb', line 229

def cancel_all!
  library.cancel_all!
rescue TranscriptionRuntimeError
  nil
end

.decode(path, sample_rate:, max_decoded_bytes:) ⇒ Object 



221
222
223
 
# File 'lib/cohere/transcribe/audio/ffmpeg_native.rb', line 221

def decode(path, sample_rate:, max_decoded_bytes:)
  library.decode(path, sample_rate: sample_rate, max_decoded_bytes: max_decoded_bytes)
end

.diagnostic ⇒ Object 



215
216
217
218
219
 
# File 'lib/cohere/transcribe/audio/ffmpeg_native.rb', line 215

def diagnostic
  library.diagnostic
rescue TranscriptionRuntimeError => e
  e.message
end

.duration(path) ⇒ Object 



225
226
227
 
# File 'lib/cohere/transcribe/audio/ffmpeg_native.rb', line 225

def duration(path)
  library.duration(path)
end

.library ⇒ Object 



204
205
206
 
# File 'lib/cohere/transcribe/audio/ffmpeg_native.rb', line 204

def library
  Library.load
end