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This is going to be a slow walk, I think. This class attempts to be the scratchpad which will hold in-memory track modifications.

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This commit is contained in:
Thomas Harte 2016-12-16 19:20:38 -05:00
parent 1e757d1039
commit dc08a23ceb
3 changed files with 73 additions and 0 deletions
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6
OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj
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@ -39,6 +39,7 @@
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@ -482,6 +483,8 @@
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@ -1295,11 +1298,13 @@
4BAB62AB1D3272D200DF5BA0 /* Disk.cpp */,
4B6C73BB1D387AE500AFCFCA /* DiskController.cpp */,
4B30512B1D989E2200B4FED8 /* Drive.cpp */,
4B3F1B441E0388D200DB26EE /* PCMPatchedTrack.cpp */,
4BAB62B61D3302CA00DF5BA0 /* PCMTrack.cpp */,
4B0BE4271D3481E700D5256B /* DigitalPhaseLockedLoop.hpp */,
4BAB62AC1D3272D200DF5BA0 /* Disk.hpp */,
4B6C73BC1D387AE500AFCFCA /* DiskController.hpp */,
4B30512C1D989E2200B4FED8 /* Drive.hpp */,
4B3F1B451E0388D200DB26EE /* PCMPatchedTrack.hpp */,
4BAB62B71D3302CA00DF5BA0 /* PCMTrack.hpp */,
4BB697CF1D4BA44900248BDF /* Encodings */,
4BAB62B21D327F7E00DF5BA0 /* Formats */,
@ -2367,6 +2372,7 @@
4B69FB441C4D941400B5F0AA /* TapeUEF.cpp in Sources */,
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4BA61EB01D91515900B3C876 /* NSData+StdVector.mm in Sources */,
4B3F1B461E0388D200DB26EE /* PCMPatchedTrack.cpp in Sources */,
4B4DC8211D2C2425003C5BF8 /* Vic20.cpp in Sources */,
4BF8295D1D8F048B001BAE39 /* MFM.cpp in Sources */,
4BE77A2E1D84ADFB00BC3827 /* File.cpp in Sources */,

16
Storage/Disk/PCMPatchedTrack.cpp Normal file
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@ -0,0 +1,16 @@
//
// PCMPatchedTrack.cpp
// Clock Signal
//
// Created by Thomas Harte on 15/12/2016.
// Copyright © 2016 Thomas Harte. All rights reserved.
//
#include "PCMPatchedTrack.hpp"
using namespace Storage::Disk;
void PCMPatchedTrack::add_segment(const Time &start_position, const PCMSegment &segment)
{
patches_.emplace_back(start_position, segment);
}

51
Storage/Disk/PCMPatchedTrack.hpp Normal file
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@ -0,0 +1,51 @@
//
// PCMPatchedTrack.hpp
// Clock Signal
//
// Created by Thomas Harte on 15/12/2016.
// Copyright © 2016 Thomas Harte. All rights reserved.
//
#ifndef PCMPatchedTrack_hpp
#define PCMPatchedTrack_hpp
#include "PCMTrack.hpp"
namespace Storage {
namespace Disk {
/*!
A subclass of @c Track that patches an existing track with PCM segments.
*/
class PCMPatchedTrack: public Track {
public:
/*!
Constructs a @c PCMPatchedTrack that will return events from @c underlying_track in
regions where it has not had alternative PCM data installed.
*/
PCMPatchedTrack(const PCMTrack &underlying_track);
/*!
Replaces whatever is currently on the track from @c start_position to @c start_position + segment length
with the contents of @c segment.
*/
void add_segment(const Time &start_position, const PCMSegment &segment);
// To satisfy Storage::Disk::Track
Event get_next_event();
Time seek_to(Time time_since_index_hole);
private:
const PCMTrack &underlying_track_;
struct Patch {
Time start_position;
PCMSegment segment;
Patch(const Time &start_position, const PCMSegment &segment) : start_position(start_position), segment(segment) {}
};
std::vector<Patch> patches_;
};
}
}
#endif /* PCMPatchedTrack_hpp */