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63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
//
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// PCMTrack.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 10/07/2016.
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// Copyright 2016 Thomas Harte. All rights reserved.
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//
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#ifndef PCMTrack_hpp
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#define PCMTrack_hpp
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#include "Track.hpp"
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#include "PCMSegment.hpp"
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#include <vector>
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namespace Storage {
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namespace Disk {
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/*!
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A subclass of @c Track that provides its @c Events by querying a pulse-code modulated record of original
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flux detections, with an implied index hole at the very start of the data.
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The data may consist of a single @c PCMSegment or of multiple, allowing a PCM-format track to contain
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multiple distinct segments of data, each with a separate clock rate.
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*/
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class PCMTrack: public Track {
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public:
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/*!
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Creates a @c PCMTrack consisting of multiple segments of data, permitting multiple clock rates.
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*/
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PCMTrack(const std::vector<PCMSegment> &);
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/*!
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Creates a @c PCMTrack consisting of a single continuous run of data, implying a constant clock rate.
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The segment's @c length_of_a_bit will be ignored and therefore need not be filled in.
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*/
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PCMTrack(const PCMSegment &);
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/*!
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Copy constructor; required for Tracks in order to support modifiable disks.
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*/
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PCMTrack(const PCMTrack &);
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// as per @c Track
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Event get_next_event() override;
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Time seek_to(const Time &time_since_index_hole) override;
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Track *clone() const override;
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private:
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// storage for the segments that describe this track
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std::vector<PCMSegmentEventSource> segment_event_sources_;
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// a pointer to the first bit to consider as the next event
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std::size_t segment_pointer_;
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PCMTrack();
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};
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}
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}
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#endif /* PCMTrack_hpp */
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