o wiR@s:ddlZddlZ  d ddZddZdd Zd d ZdS) NTcCsxt|j}|dkr |dkstd|t|tj}t||}dd|D}|g|}t||}t |t s:t d||S)a Compresses a NumPy array lossily Args: input: A numpy.ndarray. May be of type np.float or np.double. tick_power: Determines the accuracy; the input will be compressed to integer multiples of 2^tick_power. do_regression: If true, use regression on previous elements in the array (one regression coefficient per axis) to reduce the magnitudes of the values to compress. rz.Expected number of axes to be in [1,15], got: cSsg|]}t|dqS))round).0xrT/home/ubuntu/sommelier/.venv/lib/python3.10/site-packages/lilcom/lilcom_interface.py szcompress..z6Something went wrong in compression, return value was ) lenshape ValueErrornpascontiguousarrayfloat32 regress_arraylilcom_extensioncompress_float isinstancebytes RuntimeError)input tick_power do_regressionn_dimcoeffs int_coeffsmetaansrrr compresss     rcCs|}dgt|j}|s|St|d|dd}tt|jD]\}|j|dkr/q%t|d|}|dd|dd|dddd}t |dkrYd}n |d kr`d }n|d krfd }|||<|dd|dd|8<t|d|}q%|S) a Works out coefficients for linear regression on the previous sample, for each axis of the array. @param [in] input The array to be compressed; must contain floats or doubles. @param [in] regression True if we are doing regression; if false, coefficients will be all zero. Returns a list of size len(input.shape), with either zero or regression coefficients in the range [-1..1] for each corresponding axis. Each axis's regression coefficient will be zero if regression == False, or the input's size on that axis was 1, or of the estimated regression coefficient had absolute value less than 0.2. gg#B ;rNg{Gz?gg?) copyr r rdotreshaperangeswapaxessumabs)r regressionr tot_sumsqaxiscoeffrrr r,s(4  rcCstt|tstdt|t|}|durtdtj |tj d}t ||}|dus1|dkr8td||S)z Decompresses audio data compressed by compress(). Args: input: A bytes object as returned by compress() Return: On success returns a NumPy array of float; on failure raises an exception. z,Expected input to be of type `bytes`, got {}NLCould not work out shape of array from input: is not really compressed data?)dtyperzUSomething went wrong in decompression (likely bad data): decompress_float returned {}) rr TypeErrorformattyperget_float_matrix_shaper remptyrdecompress_float) byte_stringr rretrrr decompressVs   r8cCst|}|dur td|S)a# Decompresses audio data compressed by compress() just enough to get the shape it would be when decompressed. Args: input: A bytes object as returned by compress() Return: On success returns a tuple representing the shape; on failure raises an exception. Nr.)rr3r )r6r rrr get_shapeus r9)rT)numpyrrrrr8r9rrrr s %*