From 4e44c9f46e550eab4ec6b70c099dcdae44eb9d61 Mon Sep 17 00:00:00 2001
From: zhifu gao <zhifu.gzf@alibaba-inc.com>
Date: 星期四, 23 三月 2023 20:34:21 +0800
Subject: [PATCH] Merge pull request #288 from alibaba-damo-academy/dev_gzf

---
 funasr/export/export_model.py |   62 ++++++++++++++++++++++++++++---
 1 files changed, 56 insertions(+), 6 deletions(-)

diff --git a/funasr/export/export_model.py b/funasr/export/export_model.py
index beb1efe..b1161cb 100644
--- a/funasr/export/export_model.py
+++ b/funasr/export/export_model.py
@@ -10,17 +10,19 @@
 from funasr.export.models import get_model
 import numpy as np
 import random
-
+from funasr.utils.types import str2bool
 # torch_version = float(".".join(torch.__version__.split(".")[:2]))
 # assert torch_version > 1.9
 
-class ASRModelExportParaformer:
+class ModelExport:
     def __init__(
         self,
         cache_dir: Union[Path, str] = None,
         onnx: bool = True,
         quant: bool = True,
         fallback_num: int = 0,
+        audio_in: str = None,
+        calib_num: int = 200,
     ):
         assert check_argument_types()
         self.set_all_random_seed(0)
@@ -36,6 +38,9 @@
         self.onnx = onnx
         self.quant = quant
         self.fallback_num = fallback_num
+        self.frontend = None
+        self.audio_in = audio_in
+        self.calib_num = calib_num
         
 
     def _export(
@@ -67,8 +72,15 @@
     def _torch_quantize(self, model):
         def _run_calibration_data(m):
             # using dummy inputs for a example
-            dummy_input = model.get_dummy_inputs()
-            m(*dummy_input)
+            if self.audio_in is not None:
+                feats, feats_len = self.load_feats(self.audio_in)
+                for i, (feat, len) in enumerate(zip(feats, feats_len)):
+                    with torch.no_grad():
+                        m(feat, len)
+            else:
+                dummy_input = model.get_dummy_inputs()
+                m(*dummy_input)
+            
 
         from torch_quant.module import ModuleFilter
         from torch_quant.quantizer import Backend, Quantizer
@@ -114,6 +126,39 @@
         random.seed(seed)
         np.random.seed(seed)
         torch.random.manual_seed(seed)
+
+    def parse_audio_in(self, audio_in):
+        
+        wav_list, name_list = [], []
+        if audio_in.endswith(".scp"):
+            f = open(audio_in, 'r')
+            lines = f.readlines()[:self.calib_num]
+            for line in lines:
+                name, path = line.strip().split()
+                name_list.append(name)
+                wav_list.append(path)
+        else:
+            wav_list = [audio_in,]
+            name_list = ["test",]
+        return wav_list, name_list
+    
+    def load_feats(self, audio_in: str = None):
+        import torchaudio
+
+        wav_list, name_list = self.parse_audio_in(audio_in)
+        feats = []
+        feats_len = []
+        for line in wav_list:
+            path = line.strip()
+            waveform, sampling_rate = torchaudio.load(path)
+            if sampling_rate != self.frontend.fs:
+                waveform = torchaudio.transforms.Resample(orig_freq=sampling_rate,
+                                                          new_freq=self.frontend.fs)(waveform)
+            fbank, fbank_len = self.frontend(waveform, [waveform.size(1)])
+            feats.append(fbank)
+            feats_len.append(fbank_len)
+        return feats, feats_len
+    
     def export(self,
                tag_name: str = 'damo/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-pytorch',
                mode: str = 'paraformer',
@@ -140,6 +185,7 @@
         model, asr_train_args = ASRTask.build_model_from_file(
             asr_train_config, asr_model_file, cmvn_file, 'cpu'
         )
+        self.frontend = model.frontend
         self._export(model, tag_name)
             
 
@@ -188,14 +234,18 @@
     parser.add_argument('--model-name', type=str, required=True)
     parser.add_argument('--export-dir', type=str, required=True)
     parser.add_argument('--type', type=str, default='onnx', help='["onnx", "torch"]')
-    parser.add_argument('--quantize', action='store_true', help='export quantized model')
+    parser.add_argument('--quantize', type=str2bool, default=False, help='export quantized model')
     parser.add_argument('--fallback-num', type=int, default=0, help='amp fallback number')
+    parser.add_argument('--audio_in', type=str, default=None, help='["wav", "wav.scp"]')
+    parser.add_argument('--calib_num', type=int, default=200, help='calib max num')
     args = parser.parse_args()
 
-    export_model = ASRModelExportParaformer(
+    export_model = ModelExport(
         cache_dir=args.export_dir,
         onnx=args.type == 'onnx',
         quant=args.quantize,
         fallback_num=args.fallback_num,
+        audio_in=args.audio_in,
+        calib_num=args.calib_num,
     )
     export_model.export(args.model_name)

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