add flow decoder tensorrt infer

cosyvoice/cli/model.py

@@ -11,6 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+import os
 import torch
 import numpy as np
 import threading
@@ -19,6 +20,10 @@ from contextlib import nullcontext
 import uuid
 from cosyvoice.utils.common import fade_in_out
 
+try:
+    import tensorrt as trt
+except ImportError:
+    ...
 
 class CosyVoiceModel:
 
@@ -66,10 +71,20 @@ class CosyVoiceModel:
         llm_llm = torch.jit.load(llm_llm_model)
         self.llm.llm = llm_llm
 
-    def load_trt(self):
-        # TODO 你需要的TRT推理的准备
-        self.flow.decoder.estimator = xxx
-        self.flow.decoder.session = xxx
+    def load_trt(self, model_dir, use_fp16):
+        trt_file_name = 'estimator_fp16.plan' if use_fp16 else 'estimator_fp32.plan'
+        trt_file_path = os.path.join(model_dir, trt_file_name)
+        if not os.path.isfile(trt_file_path):
+            raise f"{trt_file_path} does not exist. Please use bin/export_trt.py to generate .plan file"
+
+        trt.init_libnvinfer_plugins(None, "")
+        logger = trt.Logger(trt.Logger.WARNING)
+        runtime = trt.Runtime(logger)
+        with open(trt_file_path, 'rb') as f:
+            serialized_engine = f.read()
+        engine = runtime.deserialize_cuda_engine(serialized_engine)
+        self.flow.decoder.estimator_context = engine.create_execution_context()
+        self.flow.decoder.estimator_engine = engine
 
     def llm_job(self, text, prompt_text, llm_prompt_speech_token, llm_embedding, uuid):
         with self.llm_context: