1 /* Copyright 2019 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_DELEGATE_INTERNAL_H_ 17 #define TENSORFLOW_LITE_DELEGATES_GPU_METAL_DELEGATE_INTERNAL_H_ 18 19 #import <Metal/Metal.h> 20 21 #include <functional> 22 23 struct TfLiteDelegate; 24 25 // Binds Metal buffer to an input or an output tensor in the initialized 26 // delegate. Bound buffer should have sufficient storage to accommodate all 27 // elements of a tensor. For quantized model, the buffer is bound to internal 28 // dequantized float32 tensor. 29 // Returns non-zero on success, or zero otherwise. 30 // 31 // *** Must be called *after* `Interpreter::ModifyGraphWithDelegate`. *** 32 bool TFLGpuDelegateBindMetalBufferToTensor(TfLiteDelegate* delegate, 33 int tensor_index, 34 id<MTLBuffer> metal_buffer); 35 36 // Binds user-defined MTLCommandBuffer. The delegate puts all GPU tasks 37 // into this buffer instead of the internal command buffer. 38 bool TFLGpuDelegateSetCommandBuffer(TfLiteDelegate* delegate, 39 id<MTLCommandBuffer> command_buffer); 40 41 #endif // TENSORFLOW_LITE_DELEGATES_GPU_METAL_DELEGATE_INTERNAL_H_ 42