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    How to get around max start offset is 65536?

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    • d.healeyD
      d.healey @Christoph Hart
      last edited by

      @Christoph-Hart said in How to get around max start offset is 65536?:

      Can you use the modulator?

      That might work, I will test and report back, thanks.

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      • d.healeyD
        d.healey
        last edited by

        @Christoph-Hart I don't think it will work in this situation. I'm porting over a Kontakt instrument - 😧

        In Kontakt this instrument uses the timemachine legato mode. So sample A plays, and then when you play sample B it starts playback from the current position of sample A.

        If all the samples were the same length then I think the modulator would work, but in this case they are not so, for example, I don't know what 2000ms into sample A translates to as 0 - 1 of sample B.

        Or perhaps there is a method I'm not seeing.

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        • Dan KorneffD
          Dan Korneff @d.healey
          last edited by

          @d-healey Can you use getSampleLength() to calculate the 0-1 value?
          Something like:

          var totalSamples = currentSample.getSampleLength();
          
          var offsetSamples = (offsetMs * sampleRate) / 1000;
          
          var normalizedOffset = offsetSamples / totalSamples;
          

          And then use the normalizedOffset value for your modulator?

          Dan Korneff - Producer / Mixer / Audio Nerd

          d.healeyD 1 Reply Last reply Reply Quote 1
          • d.healeyD
            d.healey @Dan Korneff
            last edited by

            @Dan-Korneff how are you getting current sample?

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            • SimonS
              Simon @d.healey
              last edited by

              @d-healey I added a function to my fork to get sample length based on note/velocity in the map, I've found it very useful.

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              • Christoph HartC
                Christoph Hart @d.healey
                last edited by Christoph Hart

                @d-healey fair point. Could a method help that just multiplies the start offset for the sampler in question? This way you would loose a bit of precision but can yank the offset range into the dimension you need.

                So if you need to start the sample at 100.000 offset which is beyond 65k, then you'll use

                // Internally multiply the offsets by this amount
                Sampler.setOffsetMultiplier(2);
                
                
                // Later
                local realOffset = 100000;
                Message.setStartOffset(realOffset / 2); // 50k < 65k => all good
                

                it won't be 100% sample accurate anymore, but below a multiplication factor of 8 this shouldn't have any real world consequences.

                d.healeyD 1 Reply Last reply Reply Quote 0
                • d.healeyD
                  d.healey @Christoph Hart
                  last edited by

                  @Christoph-Hart that might work, am I able to change it dynamically in on note on?

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                  • Christoph HartC
                    Christoph Hart @d.healey
                    last edited by Christoph Hart

                    @d-healey yes but don‘t rely on the calls being always in order, if multiple notes are played in one buffer then it will use the latest value for the multiplier for all notes within that buffer.

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                    • d.healeyD
                      d.healey @Christoph Hart
                      last edited by

                      @Christoph-Hart Sounds promising, let's give it a try

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                      • d.healeyD
                        d.healey @Simon
                        last edited by

                        @Simon said in How to get around max start offset is 65536?:

                        I added a function to my fork to get sample length based on note/velocity in the map, I've found it very useful.

                        There's actually a built in way to do this.

                        Although I'm not sure if it's usable for realtime... but maybe I could "cache" this info during init and retrieve it in the on note on callback perhaps... something for me to play with

                        const var Sampler1 = Synth.getSampler("Sampler1");
                        
                        const list = Sampler1.createSelectionWithFilter(function()
                        {
                            return this.get(Sampler.Root) == 72 && this.get(Sampler.HiVel) > 20 && this.get(Sampler.RRGroup) == 1;
                        });
                        
                        Console.print(list[0].get(Sampler.SampleEnd));
                        

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                        • Christoph HartC
                          Christoph Hart @d.healey
                          last edited by

                          let's give it a try

                          You're chances of this not interrupting your workflow will rise by 100% if you try to implement this yourself and hit me with a sweet pull request. My local branch is heads deep into the rewrite for the new group management system and the implementation should be pretty easy:

                          All you need to do is to add the API method to the Sampler class and create a function in the ModulatorSampler::setStartOffsetMultiplier() class that stores the multiplier (ideally as an integer).

                          Then in the voice start code, you need to modify this line here:

                          https://github.com/christophhart/HISE/blob/961d7d903632982c4c315062271cf1318cee278b/hi_core/hi_sampler/sampler/ModulatorSampler.cpp#L1289

                          to include the multiplication with the factor.

                          d.healeyD 1 Reply Last reply Reply Quote 1
                          • d.healeyD
                            d.healey @Christoph Hart
                            last edited by

                            @Christoph-Hart Thank you

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                            • d.healeyD
                              d.healey
                              last edited by d.healey

                              Done - https://github.com/christophhart/HISE/pull/680

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