benchmarking_backend_decider.h

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#pragma once
 
#include "image_processing/interfaces/i_backend_decider.h"
#include <chrono>
#include <optional>
 
#include "Halide.h"
 
namespace CaptureMoment::Core {
 
namespace ImageProcessing {
 
class BenchmarkingBackendDecider final : public IBackendDecider {
public:
    ~BenchmarkingBackendDecider() override = default;
 
    [[nodiscard]] Common::MemoryType decide() override;
 
    [[nodiscard]] const Halide::Target& getWinningTarget() const { return m_winning_target; };
 
private:
    // ============================================================
    // Configuration Constants
    // ============================================================
 
    static constexpr int k_benchmark_width = 1920;
 
    static constexpr int k_benchmark_height = 1080;
 
    static constexpr int k_benchmark_channels = 4;
 
    static constexpr double k_gpu_advantage_threshold = 0.9;
 
    // ============================================================
    // Benchmarking Methods
    // ============================================================
 
    [[nodiscard]] std::chrono::milliseconds benchmark_cpu() const;
 
    [[nodiscard]] std::optional<std::chrono::milliseconds>
    benchmark_gpu_feature(Halide::Target::Feature feature, const Halide::Buffer<float>& test_buffer) const;
 
    Halide::Target m_winning_target;
};
 
} // namespace ImageProcessing
 
} // namespace CaptureMoment::Core