GNURadio block for spectrum visualization using GPU https://osmocom.org/projects/sdr/wiki/Fosphor
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gr-fosphor/include/gnuradio/fosphor/base_sink_c.h

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/* -*- c++ -*- */
/*
* Copyright 2013-2021 Sylvain Munaut <tnt@246tNt.com>
*
* This file is part of gr-fosphor
*
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#pragma once
#include <gnuradio/fosphor/api.h>
#include <gnuradio/sync_block.h>
#include <gnuradio/fft/window.h>
namespace gr {
namespace fosphor {
/*!
* \brief Base fosphor sink API interface
* \ingroup fosphor
*/
class GR_FOSPHOR_API base_sink_c : public gr::sync_block
{
protected:
base_sink_c(const char *name = NULL);
public:
enum ui_action_t {
DB_PER_DIV_UP,
DB_PER_DIV_DOWN,
REF_UP,
REF_DOWN,
ZOOM_TOGGLE,
ZOOM_WIDTH_UP,
ZOOM_WIDTH_DOWN,
ZOOM_CENTER_UP,
ZOOM_CENTER_DOWN,
RATIO_UP,
RATIO_DOWN,
FREEZE_TOGGLE,
};
enum mouse_action_t {
CLICK,
};
virtual void execute_ui_action(enum ui_action_t action) = 0;
virtual void execute_mouse_action(enum mouse_action_t action, int x, int y) = 0;
virtual void set_frequency_range(const double center,
const double span) = 0;
virtual void set_frequency_center(const double center) = 0;
virtual void set_frequency_span(const double span) = 0;
virtual void set_fft_window(const gr::fft::window::win_type win) = 0;
};
} // namespace fosphor
} // namespace gr