[pulseview.git] / pv / data / segment.hpp

/*
 * This file is part of the PulseView project.
 *
 * Copyright (C) 2017 Soeren Apel <soeren@apelpie.net>
 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef PULSEVIEW_PV_DATA_SEGMENT_HPP
#define PULSEVIEW_PV_DATA_SEGMENT_HPP

#include "pv/util.hpp"

#include <mutex>
#include <thread>
#include <vector>

using std::recursive_mutex;
using std::vector;

namespace SegmentTest {
struct SmallSize8Single;
struct MediumSize8Single;
struct MaxSize8Single;
struct MediumSize24Single;
struct MediumSize32Single;
struct MaxSize32Single;
struct MediumSize32Multi;
struct MaxSize32Multi;
struct MaxSize32MultiAtOnce;
struct MaxSize32MultiIterated;
}  // namespace SegmentTest

namespace pv {
namespace data {

typedef struct {
	uint64_t sample_index, chunk_num, chunk_offs;
	uint8_t* chunk;
	uint8_t* value;
} SegmentRawDataIterator;

class Segment
{
private:
	static const uint64_t MaxChunkSize;

public:
	Segment(uint64_t samplerate, unsigned int unit_size);

	virtual ~Segment();

	uint64_t get_sample_count() const;

	const pv::util::Timestamp& start_time() const;

	double samplerate() const;
	void set_samplerate(double samplerate);

	unsigned int unit_size() const;

	void free_unused_memory();

protected:
	void append_single_sample(void *data);
	void append_samples(void *data, uint64_t samples);
	uint8_t* get_raw_samples(uint64_t start, uint64_t count) const;

	SegmentRawDataIterator* begin_raw_sample_iteration(uint64_t start);
	void continue_raw_sample_iteration(SegmentRawDataIterator* it, uint64_t increase);
	void end_raw_sample_iteration(SegmentRawDataIterator* it);

	mutable recursive_mutex mutex_;
	vector<uint8_t*> data_chunks_;
	uint8_t* current_chunk_;
	uint64_t used_samples_, unused_samples_;
	uint64_t sample_count_;
	pv::util::Timestamp start_time_;
	double samplerate_;
	uint64_t chunk_size_;
	unsigned int unit_size_;
	int iterator_count_;
	bool mem_optimization_requested_;

	friend struct SegmentTest::SmallSize8Single;
	friend struct SegmentTest::MediumSize8Single;
	friend struct SegmentTest::MaxSize8Single;
	friend struct SegmentTest::MediumSize24Single;
	friend struct SegmentTest::MediumSize32Single;
	friend struct SegmentTest::MaxSize32Single;
	friend struct SegmentTest::MediumSize32Multi;
	friend struct SegmentTest::MaxSize32Multi;
	friend struct SegmentTest::MaxSize32MultiAtOnce;
	friend struct SegmentTest::MaxSize32MultiIterated;
};

} // namespace data
} // namespace pv

#endif // PULSEVIEW_PV_DATA_SEGMENT_HPP
Commit	Line	Data
	1	/*
	2	* This file is part of the PulseView project.
	3	*
	4	* Copyright (C) 2017 Soeren Apel <soeren@apelpie.net>
	5	* Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, see <http://www.gnu.org/licenses/>.
	19	*/
	20
	21	#ifndef PULSEVIEW_PV_DATA_SEGMENT_HPP
	22	#define PULSEVIEW_PV_DATA_SEGMENT_HPP
	23
	24	#include "pv/util.hpp"
	25
	26	#include <mutex>
	27	#include <thread>
	28	#include <vector>
	29
	30	using std::recursive_mutex;
	31	using std::vector;
	32
	33	namespace SegmentTest {
	34	struct SmallSize8Single;
	35	struct MediumSize8Single;
	36	struct MaxSize8Single;
	37	struct MediumSize24Single;
	38	struct MediumSize32Single;
	39	struct MaxSize32Single;
	40	struct MediumSize32Multi;
	41	struct MaxSize32Multi;
	42	struct MaxSize32MultiAtOnce;
	43	struct MaxSize32MultiIterated;
	44	} // namespace SegmentTest
	45
	46	namespace pv {
	47	namespace data {
	48
	49	typedef struct {
	50	uint64_t sample_index, chunk_num, chunk_offs;
	51	uint8_t* chunk;
	52	uint8_t* value;
	53	} SegmentRawDataIterator;
	54
	55	class Segment
	56	{
	57	private:
	58	static const uint64_t MaxChunkSize;
	59
	60	public:
	61	Segment(uint64_t samplerate, unsigned int unit_size);
	62
	63	virtual ~Segment();
	64
	65	uint64_t get_sample_count() const;
	66
	67	const pv::util::Timestamp& start_time() const;
	68
	69	double samplerate() const;
	70	void set_samplerate(double samplerate);
	71
	72	unsigned int unit_size() const;
	73
	74	void free_unused_memory();
	75
	76	protected:
	77	void append_single_sample(void *data);
	78	void append_samples(void *data, uint64_t samples);
	79	uint8_t* get_raw_samples(uint64_t start, uint64_t count) const;
	80
	81	SegmentRawDataIterator* begin_raw_sample_iteration(uint64_t start);
	82	void continue_raw_sample_iteration(SegmentRawDataIterator* it, uint64_t increase);
	83	void end_raw_sample_iteration(SegmentRawDataIterator* it);
	84
	85	mutable recursive_mutex mutex_;
	86	vector<uint8_t*> data_chunks_;
	87	uint8_t* current_chunk_;
	88	uint64_t used_samples_, unused_samples_;
	89	uint64_t sample_count_;
	90	pv::util::Timestamp start_time_;
	91	double samplerate_;
	92	uint64_t chunk_size_;
	93	unsigned int unit_size_;
	94	int iterator_count_;
	95	bool mem_optimization_requested_;
	96
	97	friend struct SegmentTest::SmallSize8Single;
	98	friend struct SegmentTest::MediumSize8Single;
	99	friend struct SegmentTest::MaxSize8Single;
	100	friend struct SegmentTest::MediumSize24Single;
	101	friend struct SegmentTest::MediumSize32Single;
	102	friend struct SegmentTest::MaxSize32Single;
	103	friend struct SegmentTest::MediumSize32Multi;
	104	friend struct SegmentTest::MaxSize32Multi;
	105	friend struct SegmentTest::MaxSize32MultiAtOnce;
	106	friend struct SegmentTest::MaxSize32MultiIterated;
	107	};
	108
	109	} // namespace data
	110	} // namespace pv
	111
	112	#endif // PULSEVIEW_PV_DATA_SEGMENT_HPP