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#include "Halide.h"
using namespace Halide;
namespace {
class ExternOutput : public Generator<ExternOutput> {
Input<Buffer<int, 2>> input{"input"};
Input<int> addend{"addend"};
Output<Buffer<int, 2>> output{"output"};
Func work;
Var x, y;
public:
void generate() {
work(x, y) = input(x, y) * 2;
std::vector<ExternFuncArgument> params = {work, addend};
std::vector<Type> types = {Int(32)};
std::vector<Var> args = {x, y};
output.define_extern("extern_stage", params, types, args);
}
void schedule() {
Var xo, yo;
output.tile(x, y, xo, yo, x, y, 16, 16)
.parallel(yo);
work.compute_at(output, xo);
}
};
} // namespace
HALIDE_REGISTER_GENERATOR(ExternOutput, extern_output)
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