added decoding of adc_sar_04 (#127)

python/src/ctb_raw_file.hpp

@@ -37,15 +37,30 @@ m.def("adc_sar_05_decode64to16", [](py::array_t<uint8_t> input) {
 
     //Create a view of the input and output arrays
     NDView<uint64_t, 2> input_view(reinterpret_cast<uint64_t*>(input.mutable_data()), {output.shape(0), output.shape(1)});
-
     NDView<uint16_t, 2> output_view(output.mutable_data(), {output.shape(0), output.shape(1)});
 
     adc_sar_05_decode64to16(input_view, output_view);
-    // for (size_t i=0; i!=input_view.size(); ++i) {
-    //     output_view(i) = decode_adc(input_view(i));
-    // }
+
+    return output;
+});
 
 
+m.def("adc_sar_04_decode64to16", [](py::array_t<uint8_t> input) {
+
+    
+    if(input.ndim() != 2){
+        throw std::runtime_error("Only 2D arrays are supported at this moment"); 
+    }
+
+    //Create a 2D output array with the same shape as the input
+    std::vector<ssize_t> shape{input.shape(0), input.shape(1)/8};
+    py::array_t<uint16_t> output(shape);
+
+    //Create a view of the input and output arrays
+    NDView<uint64_t, 2> input_view(reinterpret_cast<uint64_t*>(input.mutable_data()), {output.shape(0), output.shape(1)});
+    NDView<uint16_t, 2> output_view(output.mutable_data(), {output.shape(0), output.shape(1)});
+
+    adc_sar_04_decode64to16(input_view, output_view);
 
     return output;
 });