[nvJPEG] Integrate nvJPEG decoder (#1288)

* nvjpeg cmake

* add common decoder, nvjpeg decoder and add image name predict api

* ppclas support nvjpeg decoder

* remove useless comments

* image decoder support opencv

* nvjpeg decode fallback to opencv

* fdtensor add nbytes_allocated

* single image decode api

* fix bug

* add pybind

* ignore nvjpeg on jetson

* fix cmake in

* predict on fdmat

* remove image names predict api, add image decoder tutorial

* Update __init__.py

* fix pybind

fastdeploy/vision/common/image_decoder/image_decoder.h

@@ -0,0 +1,49 @@
+// Copyright (c) 2022 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.
+
+#pragma once
+
+#include "fastdeploy/utils/utils.h"
+#include "fastdeploy/vision/common/processors/mat.h"
+#include "fastdeploy/vision/common/image_decoder/nvjpeg_decoder.h"
+
+namespace fastdeploy {
+namespace vision {
+
+enum class FASTDEPLOY_DECL ImageDecoderLib { OPENCV, NVJPEG };
+
+class FASTDEPLOY_DECL ImageDecoder {
+ public:
+  explicit ImageDecoder(ImageDecoderLib lib = ImageDecoderLib::OPENCV);
+
+  ~ImageDecoder();
+
+  bool Decode(const std::string& img_name, FDMat* mat);
+
+  bool BatchDecode(const std::vector<std::string>& img_names,
+                   std::vector<FDMat>* mats);
+
+ private:
+  bool ImplByOpenCV(const std::vector<std::string>& img_names,
+                    std::vector<FDMat>* mats);
+  bool ImplByNvJpeg(const std::vector<std::string>& img_names,
+                    std::vector<FDMat>* mats);
+  ImageDecoderLib lib_ = ImageDecoderLib::OPENCV;
+#ifdef ENABLE_NVJPEG
+  nvjpeg::decode_params_t nvjpeg_params_;
+#endif
+};
+
+}  // namespace vision
+}  // namespace fastdeploy