mirror of https://github.com/stella-emu/stella.git
Merge branch 'master' of github.com:stella-emu/stella
This commit is contained in:
commit
4610cae973
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@ -185,47 +185,31 @@ string RewindManager::getMessage(RewindState& state)
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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string RewindManager::getUnitString(Int64 cycles)
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string RewindManager::getUnitString(Int64 cycles)
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{
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{
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const uInt64 scanlines = myOSystem.console().tia().scanlinesLastFrame();
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const Int64 scanlines = myOSystem.console().tia().scanlinesLastFrame();
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const bool isNTSC = scanlines <= 285; // TODO: replace magic number
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const bool isNTSC = scanlines <= 285; // TODO: replace magic number
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const uInt64 NTSC_FREQ = 1193182; // ~76*262*60
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const Int64 NTSC_FREQ = 1193182; // ~76*262*60
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const uInt64 PAL_FREQ = 1182298; // ~76*312*50
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const Int64 PAL_FREQ = 1182298; // ~76*312*50
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const uInt64 freq = isNTSC ? NTSC_FREQ : PAL_FREQ; // = cycles/second
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const Int64 freq = isNTSC ? NTSC_FREQ : PAL_FREQ; // = cycles/second
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// TODO: do we need hours here? don't think so
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const Int32 NUM_UNITS = 5;
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const string UNIT_NAMES[NUM_UNITS] = { "cycle", "scanline", "frame", "second", "minute" };
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const Int64 UNIT_CYCLES[NUM_UNITS + 1] = { 1, 76, 76 * scanlines, freq, freq * 60, (Int64)1 << 63 };
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string unit;
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Int64 diffUnit;
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stringstream result;
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stringstream result;
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Int32 i;
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cycles = abs(cycles);
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cycles = abs(cycles);
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for(i = 0; i < NUM_UNITS - 1; ++i)
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{
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// use the lower unit up to twice the next unit, except for an exact match of the next unit
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// use the lower unit up to twice the next unit, except for an exact match of the next unit
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// TODO: does the latter make sense, e.g. for ROMs with changing scanlines?
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// TODO: does the latter make sense, e.g. for ROMs with changing scanlines?
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if(cycles < 76 * 2 && cycles % 76 != 0)
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if(cycles < UNIT_CYCLES[i + 1] * 2 && cycles % UNIT_CYCLES[i + 1] != 0)
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{
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break;
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unit = "cycle";
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diffUnit = cycles;
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}
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}
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else if(cycles < 76 * scanlines * 2 && cycles % (76 * scanlines) != 0)
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result << cycles / UNIT_CYCLES[i] << " " << UNIT_NAMES[i];
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{
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if(cycles / UNIT_CYCLES[i] != 1)
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unit = "scanline";
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diffUnit = cycles / 76;
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}
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else if(cycles < freq * 2 && cycles % freq != 0)
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{
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unit = "frame";
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diffUnit = cycles / (76 * scanlines);
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}
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else if(cycles < freq * 60 * 2 && cycles % (freq * 60) != 0)
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{
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unit = "second";
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diffUnit = cycles / freq;
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}
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else
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{
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unit = "minute";
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diffUnit = cycles / (freq * 60);
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} // TODO: do we need hours here? don't think so
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result << diffUnit << " " << unit;
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if(diffUnit != 1)
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result << "s";
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result << "s";
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return result.str();
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return result.str();
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