Chris@8: "use strict";
Chris@8: 
Chris@8: var kissFFTModule = KissFFTModule({});
Chris@8: 
Chris@8: var kiss_fftr_alloc = kissFFTModule.cwrap(
Chris@8:     'kiss_fftr_alloc', 'number', ['number', 'number', 'number', 'number' ]
Chris@8: );
Chris@8: 
Chris@8: var kiss_fftr = kissFFTModule.cwrap(
Chris@8:     'kiss_fftr', 'void', ['number', 'number', 'number' ]
Chris@8: );
Chris@8: 
Chris@8: var kiss_fftri = kissFFTModule.cwrap(
Chris@8:     'kiss_fftri', 'void', ['number', 'number', 'number' ]
Chris@8: );
Chris@8: 
Chris@8: var kiss_fftr_free = kissFFTModule.cwrap(
Chris@8:     'kiss_fftr_free', 'void', ['number']
Chris@8: );
Chris@8: 
Chris@8: function KissFFT(size) {
Chris@8:     this.size = size;
Chris@8:     this.fcfg = kiss_fftr_alloc(size, false);
Chris@8:     this.icfg = kiss_fftr_alloc(size, true);
Chris@8:     this.ptr = kissFFTModule._malloc(size*4 + (size+2)*4);
Chris@8:     this.ri = new Uint8Array(kissFFTModule.HEAPU8.buffer, this.ptr, size*4);
Chris@8:     this.ci = new Uint8Array(kissFFTModule.HEAPU8.buffer, this.ptr + size*4, (size+2)*4);
Chris@8:     this.forward = function(real) {
Chris@8: 	var ptr = this.ptr;
Chris@8: 	var size = this.size;
Chris@8: 	this.ri.set(new Uint8Array(real.buffer));
Chris@8: 	kiss_fftr(this.fcfg, ptr, ptr + this.size*4);
Chris@8: 	var out = new Float32Array(kissFFTModule.HEAPU8.buffer, ptr + size*4, size+2);
Chris@8: 	return out;
Chris@8:     }
Chris@8:     this.inverse = function(cpx) {
Chris@8: 	var ptr = this.ptr;
Chris@8: 	var size = this.size;
Chris@8: 	this.ci.set(new Uint8Array(cpx.buffer));
Chris@8: 	kiss_fftri(this.icfg, ptr + size*4, ptr);
Chris@8: 	var out = new Float32Array(kissFFTModule.HEAPU8.buffer, ptr, size);
Chris@8: 	return out;
Chris@8:     }
Chris@8:     this.discard = function() {
Chris@8: 	kissFFTModule._free(this.ptr);
Chris@8: 	kiss_fftr_free(this.fcfg);
Chris@8: 	kiss_fftr_free(this.icfg);
Chris@8:     }
Chris@8: }
Chris@8: