q hSSKJr SSKrSSKJrJr SSKJr SSK J r J r SSKJ r SSKJr SS KJr \"S S \\55r"S S 5rSSjrg)) annotationsN)Enumunique)audio_frame_pb2) FfiClient FfiHandle)ffi_pb2) get_address) AudioFramec(\rSrSrSrSrSrSrSrSr g) AudioResamplerQuality quicklowmediumhigh very_highN) __name__ __module__ __qualname____firstlineno__QUICKLOWMEDIUMHIGH VERY_HIGH__static_attributes__rM/var/www/html/env/lib/python3.13/site-packages/livekit/rtc/audio_resampler.pyrr s E C F DIr rcf\rSrSrSrS\R S.S SjjrS SjrS Sjr Sr g ) AudioResamplera A class for resampling audio data from one sample rate to another. `AudioResampler` provides functionality to resample audio data from an input sample rate to an output sample rate using the Sox resampling library. It supports multiple channels and configurable resampling quality. r) num_channelsqualitycXlX lX0l[R"5nXR lX%R lX5R l[U5UR l [RRUR l[RRUR lSUR l["R$R'U5nUR R((a[+UR R(5e[-UR R.R0R25Ulg)a Initialize an `AudioResampler` instance for resampling audio data. Args: input_rate (int): The sample rate of the input audio data (in Hz). output_rate (int): The desired sample rate of the output audio data (in Hz). num_channels (int, optional): The number of audio channels (e.g., 1 for mono, 2 for stereo). Defaults to 1. quality (AudioResamplerQuality, optional): The quality setting for the resampler. Can be one of the `AudioResamplerQuality` enum values: `QUICK`, `LOW`, `MEDIUM`, `HIGH`, `VERY_HIGH`. Higher quality settings result in better audio quality but require more processing power. Defaults to `AudioResamplerQuality.MEDIUM`. Raises: Exception: If there is an error creating the resampler. rN) _input_rate _output_rate _num_channels proto_ffi FfiRequestnew_sox_resampler input_rate output_rater%_to_proto_qualityquality_recipeproto_audio_frameSoxResamplerDataTypeSOXR_DATATYPE_INT16Iinput_data_typeoutput_data_typeflagsrinstancerequesterror Exceptionr resamplerhandleid _ffi_handle)selfr.r/r%r&reqresps r!__init__AudioResampler.__init__s ,&')""$+5(,7)-9*/@/I,  2 2 G G -  2 2 G G .'(#!!))#.  ! ! ' 'D22889 9$T%;%;%E%E%L%L%O%OPr c [U[5(aUOURRS5n[R "5nUR RURl [[U55URl [U5URl[R R#U5nURR$(a['URR$5eURR((d/$[*R,URR-R/URR(5n[U5n[1UUR2UR4[U5UR4[*R6"[*R85--5/$)a Push audio data into the resampler and retrieve any available resampled data. This method accepts audio data, resamples it according to the configured input and output rates, and returns any resampled data that is available after processing the input. Args: data (bytearray | AudioFrame): The audio data to resample. This can be a `bytearray` containing raw audio bytes in int16le format or an `AudioFrame` object. Returns: list[AudioFrame]: A list of `AudioFrame` objects containing the resampled audio data. The list may be empty if no output data is available yet. Raises: Exception: If there is an error during resampling. b) isinstance bytearraydatacastr+r,r?r=push_sox_resamplerresampler_handler memoryviewdata_ptrlensizerr8r9r:r; output_ptrctypesc_int8 from_addressr r)r*sizeofc_int16)r@rIbdatarArBcdata output_datas r!pushAudioResampler.pushNsR$#4339L""$262B2B2I2I/*5j6G*H'&)%j#!!))#.  " " ( (D3399: :&&11I!8!8!=!==KK  # # . .  & !!""K T%7%7&--:W%WX    r c T[R"5nURRURl[ RRU5nURR(d/$[RURR-RURR5n[U5n[UUR UR"[%U5UR"[R&"[R(5--5/$)a Flush any remaining audio data through the resampler and retrieve the resampled data. This method should be called when no more input data will be provided to ensure that all internal buffers are processed and all resampled data is output. Returns: list[AudioFrame]: A list of `AudioFrame` objects containing the remaining resampled audio data after flushing. The list may be empty if no output data remains. Raises: Exception: If there is an error during flushing. )r+r,r?r=flush_sox_resamplerrLrr8r9rQrRrSrPrTrHr r)r*rOrUrV)r@rArBrXrYs r!flushAudioResampler.flush|s""$373C3C3J3J0!!))#.''22I!9!9!>!>>LL  $ $ / /  & !!""K T%7%7&--:W%WX    r )r?r(r*r)N) r.intr/r`r%r`r&rreturnNone)rIzbytearray | AudioFrameralist[AudioFrame])rarc) rrrr__doc__rrrCrZr^rrr r!r#r#s\)>)E)E .Q.Q.Q  .Q ' .Q .Q`, \! r r#cU[R:Xa[RR$U[R :Xa[RR $U[R:Xa[RR$U[R:Xa[RR$U[R:Xa[RR$g)N) rrr2SoxQualityRecipeSOXR_QUALITY_QUICKrSOXR_QUALITY_LOWrSOXR_QUALITY_MEDIUMrSOXR_QUALITY_HIGHrSOXR_QUALITY_VERYHIGH)r&s r!r0r0s'--- 11DDD )-- - 11BBB )00 0 11EEE ).. . 11CCC )33 3 11GGG 4r )r&rraz,proto_audio_frame.SoxQualityRecipe.ValueType) __future__rrRenumrr_protorr2 _ffi_clientrr r r+_utilsr audio_framer strrr#r0rr r!rss_" 8-(#CG G T H " H1 Hr