o i@sddlmZddlmZddlmZmZmZddlm Z ddl m Z e e ZGdddZGdd d Zdd ed ed efddZdS))BytesIO)Lock)CallableDictOptional)open) get_loggerc@seZdZUdZdZeed<dZeed<iZe e e fed<dZ eed<e Ze ed <ed e d ee fd d Zed e de fddZed efddZedddZdS) AudioCachea Cache of 'bytes' objects with audio data. It is used to cache the "command" type audio inputs. The cache size is limited to max 100 elements and 500MB of audio. A global dict `__cache_dict` (static member variable of class AudioCache) is holding the wavs as 'bytes' arrays. The key is the 'source' identifier (i.e. the command for loading the data). Thread-safety is ensured by a threading.Lock guard. geͽAmax_cache_memorydmax_cache_elements_AudioCache__cache_dictr_AudioCache__cache_memory_AudioCache__lockkeyreturncCsP|j||jvr|j|WdS WddS1s!wYdS)zo Test if 'key' is in the chache. If yes return the bytes array, otherwise return None. N)rr )clsrrF/home/ubuntu/.local/lib/python3.10/site-packages/audiolab/av/lhotse.py try_cache1s  $zAudioCache.try_cachevaluecCst||jkr dS|jQt|j|jkst||j|jkrGtt|j}|j|}|jt|8_t|j|jkst||j|jks||j|<|jt|7_WddS1s`wYdS)z Add the new (key,value) pair to cache. Possibly free some elements before adding the new pair. The oldest elements are removed first. N) lenr rr r rnextiterpop)rrr removed_key removed_valuerrr add_to_cache>s  "zAudioCache.add_to_cachecCs|jS)z< Return size of AudioCache values in bytes. )rrrrr cache_memoryYszAudioCache.cache_memoryNcCs<|j|jd|_WddS1swYdS)z3 Clear the cache, remove the data. rN)rr clearrrrrr clear_cache`s "zAudioCache.clear_cache)rN)__name__ __module__ __qualname____doc__r int__annotations__r r rstrbytesrrr classmethodrrrpropertyrr!rrrrr s    r c@sXeZdZUdZdZeeed<dZee ed<e d dee fddZ e d dd Z dS) SmartOpenaWrapper class around smart_open.open method The smart_open.open attributes are cached as classed attributes - they play the role of singleton pattern. The SmartOpen.setup method is intended for initial setup. It imports the `open` method from the optional `smart_open` Python package, and sets the parameters which are shared between all calls of the `smart_open.open` method. If you do not call the setup method it is called automatically in SmartOpen.open with the provided parameters. The example demonstrates that instantiating S3 `session.client` once, instead using the defaults and leaving the smart_open creating it every time has dramatic performance benefits. Ntransport_params smart_opencCs4|jdur|j|krtd|j|||_t|_dS)Nz]SmartOpen.setup second call overwrites existing transport_params with new version %s vs %s)r-loggerwarningsm_openr.)rr-rrrsetup}s zSmartOpen.setuprbcKs<|jdur |j|d|r|n|j}|j|f||d|S)N)r-)moder-)r.r2r-)rurir4r-kwargsrrrrs  zSmartOpen.open)N)r3N)r"r#r$r%r-rrr'r.rr*dictr2rrrrrr,js  r,FurlcachercCsf|rt|nd}|dur/t|d }|}Wdn1s"wY|r/t||t|S)z Load an audio file from a URL. Args: url (str): The URL of the audio file. cache (bool): Whether to cache the audio file. Returns: The audio bytes. Nr3)r rr,rreadrr)r8r9 audio_bytesfrrrload_urls   r=N)F)ior threadingrtypingrrrr.rr1audiolab.av.utilsrr"r/r r,r(boolr=rrrrs    N+