Change Clip BPM from max device

Hey Schlam, here's some of the code related to the solution I came up with. It might be a bit overcomplicated for your purpose because I was using it for a slightly strange scenario, but hopefully it's possible to understand how the dictionaries work from this. You might have to include 'loop_end' somewhere for your situation.

I also included some helper functions that my code used (to make sure I am always using the same LiveAPI object for efficiency, and for better organization). Let me know if you have more questions about this.

///// These are some helper functions

function livePath(path) {
  if (!api) {
    api = new LiveAPI(path);
  }
  else {
    api.goto(path);
  }
}

// WP stands for 'With Path', since it sets the path of the LiveAPI object first.
function getPropWP(prop, path) {
  livePath(path);
  return apiGet(prop);
}

function getIntPropWP(prop, path) {
  livePath(path);
  return parseInt(api.get(prop));
}

function getFloatPropWP(prop, path) {
  livePath(path);
  return parseFloat(api.get(prop));
}

function getDictPropWP(prop, path) {
  livePath(path);
  return JSON.parse(api.get(prop));
}


function getSongTempo() {
  var songPath = getSongPath();
  return getFloatPropWP("tempo", songPath);
}

///// This code deals with the warp markers

var sample_length = getIntPropWP("sample_length", clipPath);
var sample_rate = getFloatPropWP("sample_rate", clipPath);
var sampleLengthSeconds = sample_length / sample_rate;
var bpm = getSongTempo();
var beatsPerSecond = bpm / 60.0;
var secondsPerBeat = 1.0 / beatsPerSecond;

var sampleEndBeatTime = sampleLengthSeconds * beatsPerSecond;

var warpMarkersDict0 = getDictPropWP("warp_markers", clipPath);
var endMarker_BeatTime = getFloatPropWP("end_marker", clipPath); //might want loop_end here instead
//var endMarker_SampleTime = endMarker_BeatTime * secondsPerBeat;
var warpMarkersArr = warpMarkersDict0["warp_markers"];
var sampleEnd_WarpMarker_BeatTime = -1;
// If there were extra warp markers added already (might be able to leave this out)
if (warpMarkersArr.length >= 3) {
  for(var i = 1; i < warpMarkersArr.length - 1; i++) {
	log("Removing marker at index #" + i);
	livePath(clipPath);
	api.call("remove_warp_marker", warpMarkersArr[i].beat_time);
  }
}
var warpMarkersDict0_2 = getDictPropWP("warp_markers", clipPath);
var warpMarkersArr_2 = warpMarkersDict0_2["warp_markers"];
//log("warpMarkersArr_2.length:", warpMarkersArr_2.length);
//log("warpMarkersDict0_2:", warpMarkersDict0_2);


// We need to add the extra warp marker ourselves
var wmDict = JSON.stringify({ "beat_time": sampleEndBeatTime, "sample_time": sampleLengthSeconds });
livePath(clipPath);
api.call("add_warp_marker", [wmDict]); //If this doesn't work, try removing the array brackets
sampleEnd_WarpMarker_BeatTime = sampleEndBeatTime;
var beatTimeDiff = endMarker_BeatTime - sampleEnd_WarpMarker_BeatTime;
livePath(clipPath);
api.call("move_warp_marker", sampleEnd_WarpMarker_BeatTime, beatTimeDiff);

// Set the clip's warping to Complex Pro to remove warping artifacts.
// This wouldn't have been necessary if the LiveAPI allowed the modification of the segment BPM directly (moving the shadow marker)
var complexPro_modeNum = 6;
setPropWP("warp_mode", complexPro_modeNum, clipPath);
var complexPro_modeNum = 6;
setPropWP("warp_mode", complexPro_modeNum, clipPath);