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#include <chrono>
#include <cstdio>
#include "stencil_chain.h"
#ifndef NO_AUTO_SCHEDULE
#include "stencil_chain_auto_schedule.h"
#endif
#include "HalideBuffer.h"
#include "halide_benchmark.h"
#include "halide_image_io.h"
using namespace Halide::Runtime;
using namespace Halide::Tools;
int main(int argc, char **argv) {
if (argc < 4) {
printf("Usage: ./process input.png timing_iterations output.png\n"
"e.g.: ./process input.png 10 output.png\n");
return 0;
}
// Input may be a PNG8
Buffer<uint16_t, 3> input_rgb = load_and_convert_image(argv[1]);
// Just take the red channel
Buffer<uint16_t, 2> input = input_rgb.sliced(2, 0);
Buffer<uint16_t, 2> output(input.width(), input.height());
int timing = atoi(argv[2]);
stencil_chain(input, output);
// Timing code
// Manually-tuned version
double best_manual = benchmark(timing, 1, [&]() {
stencil_chain(input, output);
output.device_sync();
});
printf("Manually-tuned time: %gms\n", best_manual * 1e3);
#ifndef NO_AUTO_SCHEDULE
// Auto-scheduled version
double best_auto = benchmark(timing, 1, [&]() {
stencil_chain_auto_schedule(input, output);
output.device_sync();
});
printf("Auto-scheduled time: %gms\n", best_auto * 1e3);
#endif
convert_and_save_image(output, argv[3]);
printf("Success!\n");
return 0;
}
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