1 /* Copyright 2021 The TensorFlow Authors. All Rights Reserved. 2 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 ==============================================================================*/ 15 16 #ifndef TENSORFLOW_LITE_DELEGATES_GPU_METAL_LINEAR_STORAGE_H_ 17 #define TENSORFLOW_LITE_DELEGATES_GPU_METAL_LINEAR_STORAGE_H_ 18 19 #import <Metal/Metal.h> 20 21 #include <string> 22 #include <utility> 23 24 #include "tensorflow/lite/delegates/gpu/common/data_type.h" 25 #include "tensorflow/lite/delegates/gpu/common/status.h" 26 #include "tensorflow/lite/delegates/gpu/common/task/tensor_desc.h" 27 #include "tensorflow/lite/delegates/gpu/common/task/tensor_linear_desc.h" 28 #include "tensorflow/lite/delegates/gpu/common/types.h" 29 #include "tensorflow/lite/delegates/gpu/metal/gpu_object.h" 30 31 namespace tflite { 32 namespace gpu { 33 namespace metal { 34 35 // Represent GPU 1D-array of FLT4(float4/half4) values 36 // Can use inside texture or buffer 37 class LinearStorage : public GPUObject { 38 public: LinearStorage()39 LinearStorage() {} ~LinearStorage()40 ~LinearStorage() override { Release(); } 41 42 // Move only 43 LinearStorage(LinearStorage&& storage); 44 LinearStorage& operator=(LinearStorage&& storage); 45 LinearStorage(const LinearStorage&) = delete; 46 LinearStorage& operator=(const LinearStorage&) = delete; 47 48 absl::Status GetGPUResources(const GPUObjectDescriptor* obj_ptr, 49 GPUResourcesWithValue* resources) const override; 50 51 absl::Status CreateFromTensorLinearDescriptor( 52 const TensorLinearDescriptor& desc, id<MTLDevice> device); 53 54 private: 55 void Release(); 56 57 id<MTLBuffer> buffer_ = nullptr; 58 id<MTLTexture> texture_ = nullptr; 59 int depth_; 60 LinearStorageType storage_type_; 61 }; 62 63 } // namespace metal 64 } // namespace gpu 65 } // namespace tflite 66 67 #endif // TENSORFLOW_LITE_DELEGATES_GPU_METAL_LINEAR_STORAGE_H_ 68