Initialize conv2d layer

include/layers/conv2d.cuh

@@ -0,0 +1,60 @@
+#ifndef CONV_LAYER_H
+#define CONV_LAYER_H
+
+#include <cublas_v2.h>
+
+#include <string>
+#include <vector>
+
+#include "activations.cuh"
+
+namespace Layers {
+
+class Conv2d {
+  public:
+    Conv2d(
+        int            inputSize,
+        int            inputChannels,
+        int            kernelSize,
+        int            stride,
+        std::string    padding,
+        int            numFilters,
+        Activation     activation,
+        cublasHandle_t cublasHandle
+    );
+    ~Conv2d();
+
+    void forward(const float* d_input, float* d_output);
+
+  private:
+    // Inputs
+    int inputSize;
+    int inputChannels;
+
+    // Kernel
+    int kernelSize;
+    int stride;
+    int paddingSize;
+    int numFilters;
+
+    // Outputs
+    int outputSize;
+
+    // Kernels
+    std::vector<float> kernels;
+
+    // Cuda
+    cublasHandle_t cublasHandle;
+    float*         d_kernels;
+    float*         d_padded;
+
+    // Kernels
+    Activation activation;
+
+    void initializeKernels();
+    void toCuda();
+};
+
+}  // namespace Layers
+
+#endif  // CONV_LAYER_H