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struct STProcessingState {
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int stored; // flag indicating if we already have coordinates in coords stored
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mxArray *coords; // Matlab array with current coordinates
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float *points; // various information on control points
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// base_x, base_y, data_x, data_y
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// base_frac_x, base_frac_y
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uint8_t *input_buffer; // Input Image buffer / Host
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uint8_t *cuda_input_buffer; // Input Image buffer / Device