zhifu gao
2024-03-11 95cf2646fa6dae67bf53354f4ed5e81780d8fee9
funasr/models/paraformer_streaming/model.py
@@ -561,4 +561,134 @@
        return result, 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)
        if kwargs["decoder"] == "ParaformerSANMDecoder":
            kwargs["decoder"] = "ParaformerSANMDecoderOnline"
        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
        import copy
        import types
        encoder_model = copy.copy(self)
        decoder_model = copy.copy(self)
        # encoder
        encoder_model.forward = types.MethodType(ParaformerStreaming._export_encoder_forward, encoder_model)
        encoder_model.export_dummy_inputs = types.MethodType(ParaformerStreaming.export_encoder_dummy_inputs, encoder_model)
        encoder_model.export_input_names = types.MethodType(ParaformerStreaming.export_encoder_input_names, encoder_model)
        encoder_model.export_output_names = types.MethodType(ParaformerStreaming.export_encoder_output_names, encoder_model)
        encoder_model.export_dynamic_axes = types.MethodType(ParaformerStreaming.export_encoder_dynamic_axes, encoder_model)
        encoder_model.export_name = types.MethodType(ParaformerStreaming.export_encoder_name, encoder_model)
        # decoder
        decoder_model.forward = types.MethodType(ParaformerStreaming._export_decoder_forward, decoder_model)
        decoder_model.export_dummy_inputs = types.MethodType(ParaformerStreaming.export_decoder_dummy_inputs, decoder_model)
        decoder_model.export_input_names = types.MethodType(ParaformerStreaming.export_decoder_input_names, decoder_model)
        decoder_model.export_output_names = types.MethodType(ParaformerStreaming.export_decoder_output_names, decoder_model)
        decoder_model.export_dynamic_axes = types.MethodType(ParaformerStreaming.export_decoder_dynamic_axes, decoder_model)
        decoder_model.export_name = types.MethodType(ParaformerStreaming.export_decoder_name, decoder_model)
        return encoder_model, decoder_model
    def _export_encoder_forward(
        self,
        speech: torch.Tensor,
        speech_lengths: torch.Tensor,
    ):
        # a. To device
        batch = {"speech": speech, "speech_lengths": speech_lengths, "online": True}
        # batch = to_device(batch, device=self.device)
        enc, enc_len = self.encoder(**batch)
        mask = self.make_pad_mask(enc_len)[:, None, :]
        alphas, _ = self.predictor.forward_cnn(enc, mask)
        return enc, enc_len, alphas
    def export_encoder_dummy_inputs(self):
        speech = torch.randn(2, 30, 560)
        speech_lengths = torch.tensor([6, 30], dtype=torch.int32)
        return (speech, speech_lengths)
    def export_encoder_input_names(self):
        return ['speech', 'speech_lengths']
    def export_encoder_output_names(self):
        return ['enc', 'enc_len', 'alphas']
    def export_encoder_dynamic_axes(self):
        return {
            'speech': {
                0: 'batch_size',
                1: 'feats_length'
            },
            'speech_lengths': {
                0: 'batch_size',
            },
            'enc': {
                0: 'batch_size',
                1: 'feats_length'
            },
            'enc_len': {
                0: 'batch_size',
            },
            'alphas': {
                0: 'batch_size',
                1: 'feats_length'
            },
        }
    def export_encoder_name(self):
        return "model.onnx"
    def _export_decoder_forward(
        self,
        enc: torch.Tensor,
        enc_len: torch.Tensor,
        acoustic_embeds: torch.Tensor,
        acoustic_embeds_len: torch.Tensor,
        *args,
    ):
        decoder_out, out_caches = self.decoder(enc, enc_len, acoustic_embeds, acoustic_embeds_len, *args)
        sample_ids = decoder_out.argmax(dim=-1)
        return decoder_out, sample_ids, out_caches
    def export_decoder_dummy_inputs(self):
        dummy_inputs = self.decoder.get_dummy_inputs(enc_size=self.encoder._output_size)
        return dummy_inputs
    def export_decoder_input_names(self):
        return self.decoder.get_input_names()
    def export_decoder_output_names(self):
        return self.decoder.get_output_names()
    def export_decoder_dynamic_axes(self):
        return self.decoder.get_dynamic_axes()
    def export_decoder_name(self):
        return "decoder.onnx"