sb-direct-default / handler.py
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Update handler.py
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import torch
import speechbrain as sb
show_results_every = 100 # plots results every N iterations
run_opts = {
"device": "cuda" if torch.cuda.is_available() else "cpu"
}
class PipelineSLUTask(sb.pretrained.interfaces.Pretrained):
HPARAMS_NEEDED = [
"slu_enc",
"output_emb",
"dec",
"seq_lin",
"env_corrupt",
]
MODULES_NEEDED = [
"slu_enc",
"output_emb",
"dec",
"seq_lin",
"env_corrupt",
]
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
pass
def encode_file(self, path):
tokens_bos = torch.tensor([[0]]).to(self.device)
tokens = torch.tensor([], dtype=torch.int64).to(self.device)
waveform = self.load_audio(path)
wavs = waveform.unsqueeze(0)
wav_lens = torch.tensor([1.0])
# Fake a batch:
# batch = waveform.unsqueeze(0)
rel_length = torch.tensor([1.0])
with torch.no_grad():
rel_lens = rel_length.to(self.device)
# ASR encoder forward pass
ASR_encoder_out = self.hparams.asr_model.encode_batch(
wavs.detach(), wav_lens
)
# SLU forward pass
encoder_out = self.hparams.slu_enc(ASR_encoder_out)
e_in = self.hparams.output_emb(tokens_bos)
# print(e_in.shape)
# print(encoder_out.shape)
# print(wav_lens.shape)
h, _ = self.hparams.dec(e_in, encoder_out, wav_lens)
# Output layer for seq2seq log-probabilities
logits = self.hparams.seq_lin(h)
p_seq = self.hparams.log_softmax(logits)
# Compute outputs
# if (
# stage == sb.Stage.TRAIN
# and self.batch_count % show_results_every != 0
# ):
# return p_seq, wav_lens
# else:
p_tokens, scores = self.hparams.beam_searcher(encoder_out, wav_lens)
return p_seq, wav_lens, p_tokens
# return ASR_encoder_out
def decode(self, p_seq, wav_lens, predicted_tokens):
tokens_eos = torch.tensor([[0]]).to(self.device)
tokens_eos_lens = torch.tensor([0]).to(self.device)
# Decode token terms to words
predicted_semantics = [
tokenizer.decode_ids(utt_seq).split(" ")
for utt_seq in predicted_tokens
]
return predicted_semantics
from typing import Dict, List, Any
from pretrained import PipelineSLUTask
class EndpointHandler():
def __init__(self, path=""):
hparams_file = f"{path}/better_tokenizer/1986/direct-train.yaml"
overrides = {}
with open(hparams_file) as fin:
hparams = load_hyperpyyaml(fin, overrides)
run_opts = {
"device": "cuda" if torch.cuda.is_available() else "cpu"
}
self.pipeline = PipelineSLUTask(
modules=hparams['modules'],
hparams=hparams,
run_opts=run_opts
)
def __call__(self, data: Dict[str, Any]) -> List[Dict[str, Any]]:
"""
data args:
inputs (:obj: `str` | `PIL.Image` | `np.array`)
kwargs
Return:
A :obj:`list` | `dict`: will be serialized and returned
"""
# pseudo
# self.model(input)
data = data.get("inputs", data)
print(data)
ps, wl, pt = self.pipeline.encode_file(data)
return self.pipeline.decode(ps, wl, pt)