o 2wi7E@s|ddlmZddlmZmZddlZddlmZddlm Z m Z m Z ddl m Z ddlmZedd Zeejd ejd d d ejddejd ddddejddejd ddddejddejd ddddejdd ddd edeedeedeed ef d!d"Zeejd#ejd dd d$d ejd%ejd d d ejd&ed d'd(ejd)d*edd+d(ejd,d-egd.d/d0d(ejd1edd2d(d#ed%ed3ed4eed5ed6ef d7d8Zeejd#ejd dd d$d ejd%ejd d d ejd9ed:d;d(ejdd(ejd?d)ed@dAd(ejd1edd2d(d#ed%edBedCedDed6ef dEdFZeejd#ejd dd d$d ejd%ejd d d ejd=szsimple..css|] }|dup |jVqdSr)is_lazy)rmr r r Cs  zsimple..T) recordings supervisionsfeatures output_pathlazy)r!r"r#N)allrfrom_manifeststo_file) rrrrrsupervision_set feature_set recording_setcut_setr r r simples(+  r-cuts)rrr output_cutsz(--keep-overlapping/--discard-overlappingzwhen `False`, it will discard parts of other supervisions that overlap with the main supervision. In the illustration, it would discard `Sup2` in `Cut1` and `Sup1` in `Cut2`.)rdefaultrz-dz--min-durationaAn optional duration in seconds; specifying this argument will extend the cuts that would have been shorter than `min_duration` with actual acoustic context in the recording/features. If there are supervisions present in the context, they are kept when `keep_overlapping` is true. If there is not enough context, the returned cut will be shorter than `min_duration`. If the supervision segment is longer than `min_duration`, the return cut will be longer.z-cz--context-direction)centerleftrightrandomr1zWhich direction should the cut be expanded towards to include context. The value of "center" implies equal expansion to left and right; random uniformly samples a value between "left" and "right".z,--keep-all-channels/--discard-extra-channelszIf ``True``, the output cut will have the same channels as the input cut. By default, the trimmed cut will have the same channels as the supervision.keep_overlapping min_durationcontext_directionkeep_all_channelscC\t|}t|}|j||||dD]}||qWddS1s'wYdS)z Splits each input cut into as many cuts as there are supervisions. These cuts have identical start times and durations as the supervisions. When there are overlapping supervisions, they can be kept or discarded with options. )r5r6r7r8N)r from_file open_writertrim_to_supervisionswrite)r.r/r5r6r7r8writerrr r r r<Xs 2  "r<z--typewordz"Alignment type to use for trimmingz --max-pausegz=Merge alignments separated by a pause shorter than this valuez --delimiter z@Delimiter to use for concatenating alignment symbols for mergingr max_pause delimitercCr9)a Return a new CutSet with Cuts that have identical spans as the alignments of type `type`. An additional `max_pause` is allowed between the alignments to merge contiguous alignment items. For the case of a multi-channel cut with multiple alignments, we can either trim while respecting the supervision channels (in which case output cut has the same channels as the supervision) or ignore the channels (in which case output cut has the same channels as the input cut). )rrArBr8N)rr:r;trim_to_alignmentsr=)r.r/rrArBr8r>rr r r rCs ,  "rCzEMerge supervision groups separated by a pause shorter than this valuecCsVt|}t|}|j|dD]}||qWddS1s$wYdS)a5 Return a new CutSet with Cuts that have identical spans as the supervision groups. An additional `max_pause` is allowed to merge contiguous supervision groups. A supervision group is defined as a set of supervisions that are overlapping or separated by a pause shorter than `max_pause`. )rAN)rr:r;trim_to_supervision_groupsr=)r.r/rAr>rr r r rDs   "rD cut_manifests)nargsrcCsZdd|D}t|}t|D] }|t|qWddS1s&wYdS)a Create a CutSet stored in OUTPUT_CUT_MANIFEST by iterating jointly over CUT_MANIFESTS and mixing the Cuts on the same positions. E.g. the first output cut is created from the first cuts in each input manifest. The mix is performed by summing the features from all Cuts. If the CUT_MANIFESTS have different number of Cuts, the mixing ends when the shorter manifest is depleted. cSg|]}t|qSr rr:rpathr r r rz"mix_sequential..N)rr;zipr=r)rErwr.r r r mix_sequentials   "rOcCs^ddlm}ddlm}|dd|D}|dd|}tdd |D}||d S) z Create a CutSet stored in OUTPUT_CUT_MANIFEST by matching the Cuts from CUT_MANIFESTS by their recording IDs and mixing them together. r)groupby)combinecSrHr rIrJr r r rrLz'mix_by_recording_id..cSs|jSr) recording_id)rr r r sz%mix_by_recording_id..css|] \}}t|VqdSr)r)rrRr.r r r r s  z&mix_by_recording_id..N)cytoolz.itertoolzrPlhotse.manipulationrQr from_cutsitemsr()rErrPrQall_cutsrecording_id_to_cuts mixed_cut_setr r r mix_by_recording_ids   r[) show_default)context_settings cut_manifestz --preserve-idzHShould the cuts preserve IDs (by default, they will get new, random IDs)z--max-durationzCThe maximum duration in seconds of a cut in the resulting manifest.)rrequiredrz-oz --offset-type)startendr4r`zWhere should the truncated cut start: "start" - at the start of the original cut, "end" - MAX_DURATION before the end of the original cut, "random" - randomly choose somewhere between "start" and "end" options.zB--keep-overflowing-supervisions/--discard-overflowing-supervisionsz_When a cut is truncated in the middle of a supervision segment, should the supervision be kept. preserve_id max_duration offset_typekeep_overflowing_supervisionscCs*t|}|j||||d}||dS)z Truncate the cuts in the CUT_MANIFEST and write them to OUTPUT_CUT_MANIFEST. Cuts shorter than MAX_DURATION will not be modified. )rcrdkeep_excessive_supervisionsrbN)rr:truncater()r^rrbrcrdrer,truncated_cut_setr r r rgs ,rgcCsZdd|D}t|}t|D] }|t|qWddS1s&wYdS)a{ Create a new CutSet by appending the cuts in CUT_MANIFESTS. CUT_MANIFESTS are iterated position-wise (the cuts on i'th position in each manfiest are appended to each other). The cuts are appended in the order in which they appear in the input argument list. If CUT_MANIFESTS have different lengths, the script stops once the shortest CutSet is depleted. cSrHr rIrJr r r rRrLzappend..N)rr;rMr=r)rErcut_setsrNr.r r r appendDs   "rjz --durationzDesired duration of cuts after padding. Cuts longer than this won't be affected. By default, pad to the longest cut duration found in CUT_MANIFEST.)r0rrdurationcCs$t|}|j|d}||dS)z Create a new CutSet by padding the cuts in CUT_MANIFEST. The cuts will be right-padded, i.e. the padding is placed after the signal ends. )rkN)rr:padr()r^rrkr,padded_cut_setr r r rlXs  rlcutsetoutputcCst|jt|dddS)a  Decompose CUTSET into: * recording set (recordings.jsonl.gz) * feature set (features.jsonl.gz) * supervision set (supervisions.jsonl.gz) If any of these are not preset in any of the cuts, the corresponding file for them will be empty. T) output_dirverboseN)rr: decomposer)rnror r r rrrsrrcCst|dS)zZ Describe some statistics of CUTSET, such as the total speech and audio duration. N)rr:describe)rnr r r rssrs wspecifierz --shard-sizez data/shard-06%d.tar.gz"). The resulting CutSet contains audio/feature data in addition to metadata, and can be read in Python using 'CutSet.from_webdataset' API. This function is useful for I/O intensive applications where random reads are too slow, and a one-time lengthy export step that enables fast sequential reading is preferable. See the WebDataset project for more information: https://github.com/webdataset/webdataset r)export_to_webdatasetz7Only CutSet can be exported to WebDataset format (got: z from 'z'))r.r$rvrw load_audio load_features load_customrzN)lhotse.dataset.webdatasetr{rr: isinstancer) rnrtrvrwrxr#ryrzexport_r.r r r r{s" @  r{z-bz --num-bucketszDesired number of buckets.z--samplezMHow many samples to use for estimation (first N, by default use full cutset). num_bucketssamplereturncCsBddlm}t|td}|dur|j|d}t|||ddS)a  Estimate duration bins for dynamic bucketing. Prints a Python list of num_buckets-1 floats (seconds) which constitute the boundaries between buckets. The bins are estimated in such a way so that each bucket has a roughly equal total duration of data. r)estimate_duration_buckets) manifest_clsN)first)r))lhotse.dataset.sampling.dynamic_bucketingrr rsubsetclickecho)rnrrrr.r r r estimate_bucket_binss   r)(pathlibrtypingrrrlhotse.bin.modes.cli_baser lhotse.cutrrrlhotse.serializationr lhotse.utilsr grouprcommandargumentoptionboolr-floatChoicestrr<rCrDrOr[dictrgrjrlrrrsintr{rr r r r sX        ,         /