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Diffstat (limited to 'Radio/HW/AirSpyHF/src/iqbalancer.h')
| -rw-r--r-- | Radio/HW/AirSpyHF/src/iqbalancer.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/Radio/HW/AirSpyHF/src/iqbalancer.h b/Radio/HW/AirSpyHF/src/iqbalancer.h new file mode 100644 index 0000000..baa1374 --- /dev/null +++ b/Radio/HW/AirSpyHF/src/iqbalancer.h @@ -0,0 +1,68 @@ +/* +Copyright (c) 2016-2023, Youssef Touil <youssef@airspy.com> +Copyright (c) 2018, Leif Asbrink <leif@sm5bsz.com> + +All rights reserved. + +Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: + + Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. + Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + Neither the name of Airspy HF+ nor the names of its contributors may be used to endorse or promote products derived from this software + without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, +THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +#ifndef __IQ_BALANCER_H__ +#define __IQ_BALANCER_H__ + +#include "airspyhf.h" + +#define FFTBins (4 * 1024) +#define BoostFactor 100000.0 +#define BinsToOptimize (FFTBins/25) +#define EdgeBinsToSkip (FFTBins/22) +#define CenterBinsToSkip 2 +#define MaxLookback 4 +#define PhaseStep 1e-2f +#define AmplitudeStep 1e-2f +#define MaxMu 50.0f +#define MinDeltaMu 0.1f +#define DcTimeConst 1e-4f +#define MinimumPower 0.01f +#define PowerThreshold 0.5f +#define BuffersToSkipOnReset 2 +#define MaxPowerDecay 0.98f +#define MaxPowerRatio 0.8f +#define BoostWindowNorm (MaxPowerRatio / 95) + +#if defined(__arm__) && !defined(__force_hiq__) + #define BuffersToSkip 4 + #define FFTIntegration 2 + #define FFTOverlap 1 + #define CorrelationIntegration 4 +#else + #define BuffersToSkip 2 + #define FFTIntegration 4 + #define FFTOverlap 2 + #define CorrelationIntegration 16 +#endif + +struct iq_balancer_t; + +typedef airspyhf_complex_float_t complex_t; + +ADDAPI struct iq_balancer_t * ADDCALL iq_balancer_create(float initial_phase, float initial_amplitude); +ADDAPI void ADDCALL iq_balancer_set_optimal_point(struct iq_balancer_t *iq_balancer, float w); +ADDAPI void ADDCALL iq_balancer_configure(struct iq_balancer_t *iq_balancer, int buffers_to_skip, int fft_integration, int fft_overlap, int correlation_integration); +ADDAPI void ADDCALL iq_balancer_process(struct iq_balancer_t *iq_balancer, complex_t* iq, int length, uint8_t skip_eval); +ADDAPI void ADDCALL iq_balancer_destroy(struct iq_balancer_t *iq_balancer); + +#endif |