zhifu gao
2024-03-11 9d48230c4f8f25bf88c5d6105f97370a36c9cf43
funasr/models/bicif_paraformer/model.py
@@ -342,3 +342,89 @@
                results.append(result_i)
        
        return results, meta_data
    def export(
        self,
        max_seq_len=512,
        **kwargs,
    ):
        is_onnx = kwargs.get("type", "onnx") == "onnx"
        encoder_class = tables.encoder_classes.get(kwargs["encoder"] + "Export")
        self.encoder = encoder_class(self.encoder, onnx=is_onnx)
        predictor_class = tables.predictor_classes.get(kwargs["predictor"] + "Export")
        self.predictor = predictor_class(self.predictor, onnx=is_onnx)
        decoder_class = tables.decoder_classes.get(kwargs["decoder"] + "Export")
        self.decoder = decoder_class(self.decoder, onnx=is_onnx)
        from funasr.utils.torch_function import MakePadMask
        from funasr.utils.torch_function import sequence_mask
        if is_onnx:
            self.make_pad_mask = MakePadMask(max_seq_len, flip=False)
        else:
            self.make_pad_mask = sequence_mask(max_seq_len, flip=False)
        self.forward = self._export_forward
        return self
    def _export_forward(
        self,
        speech: torch.Tensor,
        speech_lengths: torch.Tensor,
    ):
        # a. To device
        batch = {"speech": speech, "speech_lengths": speech_lengths}
        # batch = to_device(batch, device=self.device)
        enc, enc_len = self.encoder(**batch)
        mask = self.make_pad_mask(enc_len)[:, None, :]
        pre_acoustic_embeds, pre_token_length, alphas, pre_peak_index = self.predictor(enc, mask)
        pre_token_length = pre_token_length.round().type(torch.int32)
        decoder_out, _ = self.decoder(enc, enc_len, pre_acoustic_embeds, pre_token_length)
        decoder_out = torch.log_softmax(decoder_out, dim=-1)
        # get predicted timestamps
        us_alphas, us_cif_peak = self.predictor.get_upsample_timestmap(enc, mask, pre_token_length)
        return decoder_out, pre_token_length, us_alphas, us_cif_peak
    def export_dummy_inputs(self):
        speech = torch.randn(2, 30, 560)
        speech_lengths = torch.tensor([6, 30], dtype=torch.int32)
        return (speech, speech_lengths)
    def export_input_names(self):
        return ['speech', 'speech_lengths']
    def export_output_names(self):
        return ['logits', 'token_num', 'us_alphas', 'us_cif_peak']
    def export_dynamic_axes(self):
        return {
            'speech': {
                0: 'batch_size',
                1: 'feats_length'
            },
            'speech_lengths': {
                0: 'batch_size',
            },
            'logits': {
                0: 'batch_size',
                1: 'logits_length'
            },
            'us_alphas': {
                0: 'batch_size',
                1: 'alphas_length'
            },
            'us_cif_peak': {
                0: 'batch_size',
                1: 'alphas_length'
            },
        }
    def export_name(self, ):
        return "model.onnx"