LevelCrossingDetector.h

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* libscopehal                                                                                                          *
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#ifndef LevelCrossingDetector_h
#define LevelCrossingDetector_h
 
struct __attribute__((packed)) ZeroCrossingPushConstants
{
    int64_t triggerPhase;
    int64_t timescale;
    uint32_t inputSize;
    uint32_t inputPerThread;
    uint32_t outputPerThread;
    float threshold;
    float ftimescale;
};
 
struct __attribute__((packed)) PreGatherPushConstants
{
    uint32_t numBlocks;
    uint32_t stride;
};
 
struct __attribute__((packed)) GatherPushConstants
{
    uint32_t numBlocks;
    uint32_t stride;
};
 
class LevelCrossingDetector
{
public:
    LevelCrossingDetector();
 
    int64_t FindZeroCrossings(
        UniformAnalogWaveform* wfm,
        float threshold,
        vk::raii::CommandBuffer& cmdBuf,
        std::shared_ptr<QueueHandle> queue);
 
    int64_t FindZeroCrossings(
        SparseAnalogWaveform* wfm,
        float threshold,
        vk::raii::CommandBuffer& cmdBuf,
        std::shared_ptr<QueueHandle> queue);
 
    int64_t FindZeroCrossings(
        SparseDigitalWaveform* wfm,
        vk::raii::CommandBuffer& cmdBuf,
        std::shared_ptr<QueueHandle> queue);
 
    int64_t FindZeroCrossings(
        UniformDigitalWaveform* wfm,
        vk::raii::CommandBuffer& cmdBuf,
        std::shared_ptr<QueueHandle> queue);
 
    AcceleratorBuffer<int64_t>& GetResults()
    { return m_outbuf; }
 
protected:
    std::unique_ptr<ComputePipeline> m_zeroCrossingPipeline;
    std::unique_ptr<ComputePipeline> m_preGatherPipeline;
    std::unique_ptr<ComputePipeline> m_gatherPipeline;
 
    AcceleratorBuffer<int64_t> m_temporaryResults;
    AcceleratorBuffer<uint32_t> m_gatherIndexes;
    AcceleratorBuffer<int64_t> m_outbuf;
};
 
#endif