forked from Ivasoft/DSView
125 lines
3.0 KiB
C++
Executable File
125 lines
3.0 KiB
C++
Executable File
/*
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* This file is part of the DSView project.
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* DSView is based on PulseView.
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*
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* Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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* Copyright (C) 2013 DreamSourceLab <support@dreamsourcelab.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef DSVIEW_PV_DATA_ANALOGSNAPSHOT_H
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#define DSVIEW_PV_DATA_ANALOGSNAPSHOT_H
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#include <libsigrok4DSL/libsigrok.h>
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#include "snapshot.h"
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#include <utility>
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#include <vector>
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namespace AnalogSnapshotTest {
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class Basic;
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}
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namespace pv {
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namespace data {
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class AnalogSnapshot : public Snapshot
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{
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public:
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struct EnvelopeSample
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{
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uint8_t min;
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uint8_t max;
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};
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struct EnvelopeSection
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{
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uint64_t start;
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unsigned int scale;
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uint64_t length;
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uint64_t samples_num;
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EnvelopeSample *samples;
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};
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private:
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struct Envelope
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{
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uint64_t length;
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uint64_t ring_length;
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uint64_t count;
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uint64_t data_length;
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EnvelopeSample *samples;
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uint8_t *max;
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uint8_t *min;
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};
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private:
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static const unsigned int ScaleStepCount = 10;
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static const int EnvelopeScalePower;
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static const int EnvelopeScaleFactor;
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static const float LogEnvelopeScaleFactor;
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static const uint64_t EnvelopeDataUnit;
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static const uint64_t LeafBlockPower = 21;
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static const uint64_t LeafBlockSamples = 1 << LeafBlockPower;
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static const uint64_t LeafMask = ~(~0ULL << LeafBlockPower);
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public:
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AnalogSnapshot();
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virtual ~AnalogSnapshot();
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void clear();
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void init();
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void first_payload(const sr_datafeed_analog &analog,
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uint64_t total_sample_count, GSList *channels);
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void append_payload(const sr_datafeed_analog &analog);
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const uint8_t *get_samples(int64_t start_sample) const;
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void get_envelope_section(EnvelopeSection &s,
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uint64_t start, int64_t count, float min_length, int probe_index) const;
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int get_ch_order(int sig_index);
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int get_scale_factor() const;
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bool has_data(int index);
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int get_block_num();
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uint64_t get_block_size(int block_index);
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private:
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void append_data(void *data, uint64_t samples, uint16_t pitch);
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void free_envelop();
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void reallocate_envelope(Envelope &l);
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void append_payload_to_envelope_levels();
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private:
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struct Envelope _envelope_levels[DS_MAX_ANALOG_PROBES_NUM][ScaleStepCount];
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friend class AnalogSnapshotTest::Basic;
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};
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} // namespace data
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} // namespace pv
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#endif // DSVIEW_PV_DATA_ANALOGSNAPSHOT_H
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