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#include "Halide.h"
// Include the machine-generated .stub.h header file.
#include "configure.stub.h"
using namespace Halide;
const int kSize = 32;
void verify(const Buffer<int32_t, 3> &img, float compiletime_factor, float runtime_factor, int channels) {
img.for_each_element([=](int x, int y, int c) {
int expected = (int32_t)(compiletime_factor * runtime_factor * c * (x > y ? x : y));
int actual = img(x, y, c);
assert(expected == actual);
});
}
int main(int argc, char **argv) {
GeneratorContext context(get_jit_target_from_environment());
Buffer<int, 3> input(kSize, kSize, 3);
input.for_each_element([&](int x, int y, int c) {
input(x, y, c) = (x * 3 + y * 5 + c * 7);
});
std::vector<Buffer<uint8_t, 2>> extras;
int extra_value = 0;
for (int i = 0; i < 3; ++i) {
extras.push_back(Buffer<uint8_t, 2>(kSize, kSize));
extras.back().fill((uint8_t)i);
extra_value += i;
}
constexpr uint16_t typed_extra_value = 4;
Buffer<int16_t, 2> typed_extra(kSize, kSize);
typed_extra.fill(typed_extra_value);
constexpr int extra_scalar = 7;
constexpr int8_t extra_dynamic_scalar = 13;
constexpr uint16_t extra_func_value = 5;
constexpr int bias = 1;
extra_value += extra_scalar + extra_dynamic_scalar + extra_func_value + typed_extra_value + bias;
// Use a Generator Stub to create the Halide IR,
// then call realize() to JIT and execute it.
{
// When calling a Stub, Func inputs must be actual Halide::Func.
Var x, y, c;
Func func_extra;
func_extra(x, y, c) = cast<uint16_t>(extra_func_value);
auto result = configure::generate(context, configure::Inputs{
input,
bias,
extras[0], extras[1], extras[2],
typed_extra,
func_extra,
extra_scalar,
cast<int8_t>(extra_dynamic_scalar)});
Buffer<int32_t, 3> output = result.output.realize({kSize, kSize, 3});
Buffer<float, 3> extra_buffer_output = result.extra_buffer_output.realize({kSize, kSize, 3});
Buffer<double, 2> extra_func_output = result.extra_func_output.realize({kSize, kSize});
output.for_each_element([&](int x, int y, int c) {
assert(output(x, y, c) == input(x, y, c) + extra_value);
});
extra_buffer_output.for_each_element([&](int x, int y, int c) {
assert(extra_buffer_output(x, y, c) == output(x, y, c));
});
extra_func_output.for_each_element([&](int x, int y) {
assert(extra_func_output(x, y) == output(x, y, 0));
});
}
// Alternately, instead of using Generator Stubs, we can just use the Callable interface.
// We can call this on any Generator that is registered in the current process.
{
Callable configure = create_callable_from_generator(context, "configure");
Buffer<int, 3> output(kSize, kSize, 3);
Buffer<float, 3> extra_buffer_output(kSize, kSize, 3);
Buffer<double, 2> extra_func_output(kSize, kSize);
// All inputs to a Callable must be fully realized, so any Func inputs
// that the Generator has implicitly become Buffer inputs of the same type
// and dimensionality.
Buffer<uint16_t, 3> func_extra(kSize, kSize, 3);
func_extra.fill(extra_func_value);
int r = configure(input, bias,
// extra inputs are in the order they were added, after all predeclared inputs
extras[0], extras[1], extras[2],
typed_extra,
func_extra,
extra_scalar,
extra_dynamic_scalar,
output,
// extra outputs are in the order they were added, after all predeclared outputs
extra_buffer_output,
extra_func_output);
assert(r == 0);
output.for_each_element([&](int x, int y, int c) {
assert(output(x, y, c) == input(x, y, c) + extra_value);
});
extra_buffer_output.for_each_element([&](int x, int y, int c) {
assert(extra_buffer_output(x, y, c) == output(x, y, c));
});
extra_func_output.for_each_element([&](int x, int y) {
assert(extra_func_output(x, y) == output(x, y, 0));
});
}
// We can also make an explicitly-typed std::function if we prefer.
{
auto configure = create_callable_from_generator(context, "configure")
.make_std_function<
Buffer<int, 3>,
int32_t,
Buffer<uint8_t, 2>,
Buffer<uint8_t, 2>,
Buffer<uint8_t, 2>,
Buffer<int16_t, 2>,
Buffer<uint16_t, 3>,
int32_t,
int8_t,
Buffer<int, 3>,
Buffer<float, 3>,
Buffer<double, 2>>();
Buffer<int, 3> output(kSize, kSize, 3);
Buffer<float, 3> extra_buffer_output(kSize, kSize, 3);
Buffer<double, 2> extra_func_output(kSize, kSize);
// All inputs to a Callable must be fully realized, so any Func inputs
// that the Generator has implicitly become Buffer inputs of the same type
// and dimensionality.
Buffer<uint16_t, 3> func_extra(kSize, kSize, 3);
func_extra.fill(extra_func_value);
int r = configure(input, bias,
// extra inputs are in the order they were added, after all predeclared inputs
extras[0], extras[1], extras[2],
typed_extra,
func_extra,
extra_scalar,
extra_dynamic_scalar,
output,
// extra outputs are in the order they were added, after all predeclared outputs
extra_buffer_output,
extra_func_output);
assert(r == 0);
output.for_each_element([&](int x, int y, int c) {
assert(output(x, y, c) == input(x, y, c) + extra_value);
});
extra_buffer_output.for_each_element([&](int x, int y, int c) {
assert(extra_buffer_output(x, y, c) == output(x, y, c));
});
extra_func_output.for_each_element([&](int x, int y) {
assert(extra_func_output(x, y) == output(x, y, 0));
});
}
printf("Success!\n");
return 0;
}
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