Add pybind11 wrapper for decoder

fluid/DeepASR/decoder/decoder.cc

+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+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. */
+
+#include "decoder.h"
+
+std::string decode(std::vector<std::vector<float>> probs_mat) {
+  // Add decoding logic here
+
+  return "example decoding result";
+}

fluid/DeepASR/decoder/decoder.h

+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+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. */
+
+#include <string>
+#include <vector>
+
+std::string decode(std::vector<std::vector<float>> probs_mat);

fluid/DeepASR/decoder/pybind.cc

+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+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. */
+
+#include <pybind11/pybind11.h>
+#include <pybind11/stl.h>
+
+#include "decoder.h"
+
+namespace py = pybind11;
+
+PYBIND11_MODULE(decoder, m) {
+  m.doc() = "Decode function for Deep ASR model";
+
+  m.def("decode",
+        &decode,
+        "Decode one input probability matrix "
+        "and return the transcription");
+}

fluid/DeepASR/decoder/setup.py

+#  Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# 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
+from distutils.core import setup, Extension
+from distutils.sysconfig import get_config_vars
+
+args = ['-std=c++11']
+
+# remove warning about -Wstrict-prototypes
+(opt, ) = get_config_vars('OPT')
+os.environ['OPT'] = " ".join(flag for flag in opt.split()
+                             if flag != '-Wstrict-prototypes')
+
+ext_modules = [
+    Extension(
+        'decoder',
+        ['pybind.cc', 'decoder.cc'],
+        include_dirs=['pybind11/include', '.'],
+        language='c++',
+        extra_compile_args=args, ),
+]
+
+setup(
+    name='decoder',
+    version='0.0.1',
+    author='Paddle',
+    author_email='',
+    description='Decoder for Deep ASR model',
+    ext_modules=ext_modules, )

fluid/DeepASR/decoder/setup.sh

+
+
+if [ ! -d pybind11 ]; then
+    git clone https://github.com/pybind/pybind11.git
+fi 
+
+python setup.py build_ext -i