Ejemplo n.º 1
0
  /** Translation durchfuehren */
  public void process() {
    int i, j, k;
    int ch, len;
    float f1;
    double d1, d2, d3, d4, d5;
    long progOff, progLen, lo;

    // io
    AudioFile reInF = null;
    AudioFile imInF = null;
    AudioFile reOutF = null;
    AudioFile imOutF = null;
    AudioFileDescr reInStream = null;
    AudioFileDescr imInStream = null;
    AudioFileDescr reOutStream = null;
    AudioFileDescr imOutStream = null;
    FloatFile reFloatF[] = null;
    FloatFile imFloatF[] = null;
    File reTempFile[] = null;
    File imTempFile[] = null;
    int outChanNum;

    float[][] reInBuf; // [ch][i]
    float[][] imInBuf; // [ch][i]
    float[][] reOutBuf = null; // [ch][i]
    float[][] imOutBuf = null; // [ch][i]
    float[] convBuf1, convBuf2;
    boolean complex;

    PathField ggOutput;

    // Synthesize
    Param ampRef = new Param(1.0, Param.ABS_AMP); // transform-Referenz
    float gain; // gain abs amp
    float dryGain, wetGain;
    float inGain;
    float maxAmp = 0.0f;
    Param peakGain;

    int inLength, inOff;
    int pre;
    int post;
    int length;
    int framesRead, framesWritten, outLength;
    boolean polarIn, polarOut;

    // phase unwrapping
    double[] phi;
    int[] wrap;
    double[] carry;

    Param lenRef;

    topLevel:
    try {

      complex = pr.bool[PR_HASIMINPUT] || pr.bool[PR_HASIMOUTPUT];
      polarIn = pr.intg[PR_OPERATOR] == OP_POLAR2RECT;
      polarOut = pr.intg[PR_OPERATOR] == OP_RECT2POLAR;
      if ((polarIn || polarOut) && !complex) throw new IOException(ERR_NOTCOMPLEX);

      // ---- open input ----

      reInF = AudioFile.openAsRead(new File(pr.text[PR_REINPUTFILE]));
      reInStream = reInF.getDescr();
      inLength = (int) reInStream.length;
      reInBuf = new float[reInStream.channels][8192];
      imInBuf = new float[reInStream.channels][8192];

      if (pr.bool[PR_HASIMINPUT]) {
        imInF = AudioFile.openAsRead(new File(pr.text[PR_IMINPUTFILE]));
        imInStream = imInF.getDescr();
        if (imInStream.channels != reInStream.channels) throw new IOException(ERR_COMPLEX);
        inLength = (int) Math.min(inLength, imInStream.length);
      }

      lenRef = new Param(AudioFileDescr.samplesToMillis(reInStream, inLength), Param.ABS_MS);
      d1 =
          AudioFileDescr.millisToSamples(
              reInStream, (Param.transform(pr.para[PR_OFFSET], Param.ABS_MS, lenRef, null).value));
      j = (int) (d1 >= 0.0 ? (d1 + 0.5) : (d1 - 0.5)); // correct rounding for negative values!
      length =
          (int)
              (AudioFileDescr.millisToSamples(
                      reInStream,
                      (Param.transform(pr.para[PR_LENGTH], Param.ABS_MS, lenRef, null)).value)
                  + 0.5);

      // System.err.println( "offset = "+j );

      if (j >= 0) {
        inOff = Math.min(j, inLength);
        if (!pr.bool[PR_REVERSE]) {
          reInF.seekFrame(inOff);
          if (pr.bool[PR_HASIMINPUT]) {
            imInF.seekFrame(inOff);
          }
        }
        inLength -= inOff;
        pre = 0;
      } else {
        inOff = 0;
        pre = Math.min(-j, length);
      }
      inLength = Math.min(inLength, length - pre);
      post = length - pre - inLength;

      if (pr.bool[PR_REVERSE]) {
        i = pre;
        pre = post;
        post = i;
        inOff += inLength;
      }

      // .... check running ....
      if (!threadRunning) break topLevel;

      // for( op = 0; op < 2; op++ ) {
      // 	System.out.println( op +": pre "+pre[op]+" / len "+inLength[op]+" / post "+post[op] );
      // }
      // System.out.println( "tot "+length[0]);

      outLength = length;
      outChanNum = reInStream.channels;

      // ---- open output ----

      ggOutput = (PathField) gui.getItemObj(GG_REOUTPUTFILE);
      if (ggOutput == null) throw new IOException(ERR_MISSINGPROP);
      reOutStream = new AudioFileDescr(reInStream);
      ggOutput.fillStream(reOutStream);
      reOutStream.channels = outChanNum;
      // well, more sophisticated code would
      // move and truncate the markers...
      if ((pre == 0) /* && (post == 0) */) {
        reInF.readMarkers();
        reOutStream.setProperty(
            AudioFileDescr.KEY_MARKERS, reInStream.getProperty(AudioFileDescr.KEY_MARKERS));
      }
      reOutF = AudioFile.openAsWrite(reOutStream);
      reOutBuf = new float[outChanNum][8192];
      imOutBuf = new float[outChanNum][8192];

      if (pr.bool[PR_HASIMOUTPUT]) {
        imOutStream = new AudioFileDescr(reInStream);
        ggOutput.fillStream(imOutStream);
        imOutStream.channels = outChanNum;
        imOutStream.file = new File(pr.text[PR_IMOUTPUTFILE]);
        imOutF = AudioFile.openAsWrite(imOutStream);
      }
      // .... check running ....
      if (!threadRunning) break topLevel;

      // ---- Further inits ----

      phi = new double[outChanNum];
      wrap = new int[outChanNum];
      carry = new double[outChanNum];
      for (ch = 0; ch < outChanNum; ch++) {
        phi[ch] = 0.0;
        wrap[ch] = 0;
        carry[ch] = Double.NEGATIVE_INFINITY;
      }

      progOff = 0; // read, transform, write
      progLen = (long) outLength * 3;

      wetGain = (float) (Param.transform(pr.para[PR_WETMIX], Param.ABS_AMP, ampRef, null)).value;
      dryGain = (float) (Param.transform(pr.para[PR_DRYMIX], Param.ABS_AMP, ampRef, null)).value;
      if (pr.bool[PR_DRYINVERT]) {
        dryGain = -dryGain;
      }
      inGain = (float) (Param.transform(pr.para[PR_INPUTGAIN], Param.ABS_AMP, ampRef, null)).value;
      if (pr.bool[PR_INVERT]) {
        inGain = -inGain;
      }

      // normalization requires temp files
      if (pr.intg[PR_GAINTYPE] == GAIN_UNITY) {
        reTempFile = new File[outChanNum];
        reFloatF = new FloatFile[outChanNum];
        for (ch = 0;
            ch < outChanNum;
            ch++) { // first zero them because an exception might be thrown
          reTempFile[ch] = null;
          reFloatF[ch] = null;
        }
        for (ch = 0; ch < outChanNum; ch++) {
          reTempFile[ch] = IOUtil.createTempFile();
          reFloatF[ch] = new FloatFile(reTempFile[ch], GenericFile.MODE_OUTPUT);
        }
        if (pr.bool[PR_HASIMOUTPUT]) {
          imTempFile = new File[outChanNum];
          imFloatF = new FloatFile[outChanNum];
          for (ch = 0;
              ch < outChanNum;
              ch++) { // first zero them because an exception might be thrown
            imTempFile[ch] = null;
            imFloatF[ch] = null;
          }
          for (ch = 0; ch < outChanNum; ch++) {
            imTempFile[ch] = IOUtil.createTempFile();
            imFloatF[ch] = new FloatFile(imTempFile[ch], GenericFile.MODE_OUTPUT);
          }
        }
        progLen += outLength;
      } else {
        gain = (float) (Param.transform(pr.para[PR_GAIN], Param.ABS_AMP, ampRef, null)).value;
        wetGain *= gain;
        dryGain *= gain;
      }
      // .... check running ....
      if (!threadRunning) break topLevel;

      // ----==================== the real stuff ====================----

      framesRead = 0;
      framesWritten = 0;

      while (threadRunning && (framesWritten < outLength)) {
        // ---- choose chunk len ----
        len = Math.min(8192, outLength - framesWritten);
        if (pre > 0) {
          len = Math.min(len, pre);
        } else if (inLength > 0) {
          len = Math.min(len, inLength);
        } else {
          len = Math.min(len, post);
        }

        // ---- read input chunks ----
        if (pre > 0) {
          Util.clear(reInBuf);
          if (complex) {
            Util.clear(imInBuf);
          }
          pre -= len;
        } else if (inLength > 0) {
          if (pr.bool[PR_REVERSE]) { // ---- read reversed ----
            reInF.seekFrame(inOff - framesRead - len);
            reInF.readFrames(reInBuf, 0, len);
            for (ch = 0; ch < reInStream.channels; ch++) {
              convBuf1 = reInBuf[ch];
              for (i = 0, j = len - 1; i < j; i++, j--) {
                f1 = convBuf1[j];
                convBuf1[j] = convBuf1[i];
                convBuf1[i] = f1;
              }
            }
            if (pr.bool[PR_HASIMINPUT]) {
              imInF.seekFrame(inOff - framesRead - len);
              imInF.readFrames(imInBuf, 0, len);
              for (ch = 0; ch < imInStream.channels; ch++) {
                convBuf1 = imInBuf[ch];
                for (i = 0, j = len - 1; i < j; i++, j--) {
                  f1 = convBuf1[j];
                  convBuf1[j] = convBuf1[i];
                  convBuf1[i] = f1;
                }
              }
            } else if (complex) {
              Util.clear(imInBuf);
            }
          } else { // ---- read normal ----
            reInF.readFrames(reInBuf, 0, len);
            if (pr.bool[PR_HASIMINPUT]) {
              imInF.readFrames(imInBuf, 0, len);
            } else if (complex) {
              Util.clear(imInBuf);
            }
          }
          inLength -= len;
          framesRead += len;
        } else {
          Util.clear(reInBuf);
          if (complex) {
            Util.clear(imInBuf);
          }
          post -= len;
        }
        progOff += len;
        // .... progress ....
        setProgression((float) progOff / (float) progLen);
        // .... check running ....
        if (!threadRunning) break topLevel;

        // ---- save dry signal ----
        for (ch = 0; ch < outChanNum; ch++) {
          convBuf1 = reInBuf[ch];
          convBuf2 = reOutBuf[ch];
          for (i = 0; i < len; i++) {
            convBuf2[i] = convBuf1[i] * dryGain;
          }
          if (complex) {
            convBuf1 = imInBuf[ch];
            convBuf2 = imOutBuf[ch];
            for (i = 0; i < len; i++) {
              convBuf2[i] = convBuf1[i] * dryGain;
            }
          }
        }

        // ---- rectify + apply input gain ----
        for (ch = 0; ch < reInStream.channels; ch++) {
          convBuf1 = reInBuf[ch];
          convBuf2 = imInBuf[ch];
          // ---- rectify ----
          if (pr.bool[PR_RECTIFY]) {
            if (complex) {
              if (polarIn) {
                for (i = 0; i < len; i++) {
                  convBuf2[i] = 0.0f;
                }
              } else {
                for (i = 0; i < len; i++) {
                  d1 = convBuf1[i];
                  d2 = convBuf2[i];
                  convBuf1[i] = (float) Math.sqrt(d1 * d1 + d2 * d2);
                  convBuf2[i] = 0.0f;
                }
              }
            } else {
              for (i = 0; i < len; i++) {
                convBuf1[i] = Math.abs(convBuf1[i]);
              }
            }
          }
          // ---- apply input gain ----
          Util.mult(convBuf1, 0, len, inGain);
          if (complex & !polarIn) {
            Util.mult(convBuf2, 0, len, inGain);
          }
        }

        // ---- heart of the dragon ----
        for (ch = 0; ch < outChanNum; ch++) {
          convBuf1 = reInBuf[ch];
          convBuf2 = imInBuf[ch];

          switch (pr.intg[PR_OPERATOR]) {
            case OP_NONE: // ================ None ================
              for (i = 0; i < len; i++) {
                reOutBuf[ch][i] += wetGain * convBuf1[i];
              }
              if (complex) {
                for (i = 0; i < len; i++) {
                  imOutBuf[ch][i] += wetGain * convBuf2[i];
                }
              }
              break;

            case OP_SIN: // ================ Cosinus ================
              if (complex) {
                for (i = 0; i < len; i++) {
                  reOutBuf[ch][i] += wetGain * (float) Math.sin(convBuf1[i] * Math.PI);
                  imOutBuf[ch][i] += wetGain * (float) Math.sin(convBuf2[i] * Math.PI);
                }
              } else {
                for (i = 0; i < len; i++) {
                  reOutBuf[ch][i] += wetGain * (float) Math.sin(convBuf1[i] * Math.PI);
                }
              }
              break;

            case OP_SQR: // ================ Square ================
              if (complex) {
                for (i = 0; i < len; i++) {
                  reOutBuf[ch][i] +=
                      wetGain * (convBuf1[i] * convBuf1[i] - convBuf2[i] * convBuf2[i]);
                  imOutBuf[ch][i] -= wetGain * (convBuf1[i] * convBuf2[i] * 2);
                }
              } else {
                for (i = 0; i < len; i++) {
                  reOutBuf[ch][i] += wetGain * (convBuf1[i] * convBuf1[i]);
                }
              }
              break;

            case OP_SQRT: // ================ Square root ================
              if (complex) {
                d3 = phi[ch];
                k = wrap[ch];
                d4 = k * Constants.PI2;
                for (i = 0; i < len; i++) {
                  d1 =
                      wetGain
                          * Math.pow(convBuf1[i] * convBuf1[i] + convBuf2[i] * convBuf2[i], 0.25);
                  d2 = Math.atan2(convBuf2[i], convBuf1[i]);
                  if (d2 - d3 > Math.PI) {
                    k--;
                    d4 = k * Constants.PI2;
                  } else if (d3 - d2 > Math.PI) {
                    k++;
                    d4 = k * Constants.PI2;
                  }
                  d2 += d4;
                  d3 = d2;
                  d2 /= 2;
                  reOutBuf[ch][i] += (float) (d1 * Math.cos(d2));
                  imOutBuf[ch][i] += (float) (d1 * Math.sin(d2));
                }
                phi[ch] = d3;
                wrap[ch] = k;

              } else {
                for (i = 0; i < len; i++) {
                  f1 = convBuf1[i];
                  if (f1 > 0) {
                    reOutBuf[ch][i] += wetGain * (float) Math.sqrt(f1);
                  } // else undefiniert
                }
              }
              break;

            case OP_RECT2POLARW: // ================ Rect->Polar (wrapped) ================
              for (i = 0; i < len; i++) {
                d1 = wetGain * Math.sqrt(convBuf1[i] * convBuf1[i] + convBuf2[i] * convBuf2[i]);
                d2 = Math.atan2(convBuf2[i], convBuf1[i]);
                reOutBuf[ch][i] += (float) d1;
                imOutBuf[ch][i] += (float) d2;
              }
              break;

            case OP_RECT2POLAR: // ================ Rect->Polar ================
              d3 = phi[ch];
              k = wrap[ch];
              d4 = k * Constants.PI2;
              for (i = 0; i < len; i++) {
                d1 = wetGain * Math.sqrt(convBuf1[i] * convBuf1[i] + convBuf2[i] * convBuf2[i]);
                d2 = Math.atan2(convBuf2[i], convBuf1[i]);
                if (d2 - d3 > Math.PI) {
                  k--;
                  d4 = k * Constants.PI2;
                } else if (d3 - d2 > Math.PI) {
                  k++;
                  d4 = k * Constants.PI2;
                }
                d2 += d4;
                reOutBuf[ch][i] += (float) d1;
                imOutBuf[ch][i] += (float) d2;
                d3 = d2;
              }
              phi[ch] = d3;
              wrap[ch] = k;
              break;

            case OP_POLAR2RECT: // ================ Polar->Rect ================
              for (i = 0; i < len; i++) {
                f1 = wetGain * convBuf1[i];
                reOutBuf[ch][i] += f1 * (float) Math.cos(convBuf2[i]);
                imOutBuf[ch][i] += f1 * (float) Math.sin(convBuf2[i]);
              }
              break;

            case OP_LOG: // ================ Log ================
              if (complex) {
                d3 = phi[ch];
                k = wrap[ch];
                d4 = k * Constants.PI2;
                d5 = carry[ch];
                for (i = 0; i < len; i++) {
                  d1 = Math.sqrt(convBuf1[i] * convBuf1[i] + convBuf2[i] * convBuf2[i]);
                  d2 = Math.atan2(convBuf2[i], convBuf1[i]);
                  if (d2 - d3 > Math.PI) {
                    k--;
                    d4 = k * Constants.PI2;
                  } else if (d3 - d2 > Math.PI) {
                    k++;
                    d4 = k * Constants.PI2;
                  }
                  if (d1 > 0.0) {
                    d5 = Math.log(d1);
                  }
                  d2 += d4;
                  reOutBuf[ch][i] += (float) d5;
                  imOutBuf[ch][i] += (float) d2;
                  d3 = d2;
                }
                phi[ch] = d3;
                wrap[ch] = k;
                carry[ch] = d5;

              } else {
                for (i = 0; i < len; i++) {
                  f1 = convBuf1[i];
                  if (f1 > 0) {
                    reOutBuf[ch][i] += wetGain * (float) Math.log(f1);
                  } // else undefiniert
                }
              }
              break;

            case OP_EXP: // ================ Exp ================
              if (complex) {
                for (i = 0; i < len; i++) {
                  d1 = wetGain * Math.exp(convBuf1[i]);
                  reOutBuf[ch][i] += (float) (d1 * Math.cos(convBuf2[i]));
                  imOutBuf[ch][i] += (float) (d1 * Math.sin(convBuf2[i]));
                }
              } else {
                for (i = 0; i < len; i++) {
                  reOutBuf[ch][i] += wetGain * (float) Math.exp(convBuf1[i]);
                }
              }
              break;

            case OP_NOT: // ================ NOT ================
              for (i = 0; i < len; i++) {
                lo = ~((long) (convBuf1[i] * 2147483647.0));
                reOutBuf[ch][i] += wetGain * (float) ((lo & 0xFFFFFFFFL) / 2147483647.0);
              }
              if (complex) {
                for (i = 0; i < len; i++) {
                  lo = ~((long) (convBuf2[i] * 2147483647.0));
                  imOutBuf[ch][i] += wetGain * (float) ((lo & 0xFFFFFFFFL) / 2147483647.0);
                }
              }
              break;
          }
        } // for outChan
        progOff += len;
        // .... progress ....
        setProgression((float) progOff / (float) progLen);
        // .... check running ....
        if (!threadRunning) break topLevel;

        // ---- write output chunk ----
        if (reFloatF != null) {
          for (ch = 0; ch < outChanNum; ch++) {
            reFloatF[ch].writeFloats(reOutBuf[ch], 0, len);
            if (pr.bool[PR_HASIMOUTPUT]) {
              imFloatF[ch].writeFloats(imOutBuf[ch], 0, len);
            }
          }
        } else {
          reOutF.writeFrames(reOutBuf, 0, len);
          if (pr.bool[PR_HASIMOUTPUT]) {
            imOutF.writeFrames(imOutBuf, 0, len);
          }
        }
        // check max amp
        for (ch = 0; ch < outChanNum; ch++) {
          convBuf1 = reOutBuf[ch];
          for (i = 0; i < len; i++) {
            f1 = Math.abs(convBuf1[i]);
            if (f1 > maxAmp) {
              maxAmp = f1;
            }
          }
          if (pr.bool[PR_HASIMOUTPUT]) {
            convBuf1 = imOutBuf[ch];
            for (i = 0; i < len; i++) {
              f1 = Math.abs(convBuf1[i]);
              if (f1 > maxAmp) {
                maxAmp = f1;
              }
            }
          }
        }

        progOff += len;
        framesWritten += len;
        // .... progress ....
        setProgression((float) progOff / (float) progLen);
      } // while not framesWritten

      // ----==================== normalize output ====================----

      if (pr.intg[PR_GAINTYPE] == GAIN_UNITY) {
        peakGain = new Param(maxAmp, Param.ABS_AMP);
        gain =
            (float)
                (Param.transform(
                        pr.para[PR_GAIN],
                        Param.ABS_AMP,
                        new Param(1.0 / peakGain.value, peakGain.unit),
                        null))
                    .value;
        f1 = pr.bool[PR_HASIMOUTPUT] ? ((1.0f + getProgression()) / 2) : 1.0f;
        normalizeAudioFile(reFloatF, reOutF, reOutBuf, gain, f1);
        if (pr.bool[PR_HASIMOUTPUT]) {
          normalizeAudioFile(imFloatF, imOutF, imOutBuf, gain, 1.0f);
        }
        maxAmp *= gain;

        for (ch = 0; ch < outChanNum; ch++) {
          reFloatF[ch].cleanUp();
          reFloatF[ch] = null;
          reTempFile[ch].delete();
          reTempFile[ch] = null;
          if (pr.bool[PR_HASIMOUTPUT]) {
            imFloatF[ch].cleanUp();
            imFloatF[ch] = null;
            imTempFile[ch].delete();
            imTempFile[ch] = null;
          }
        }
      }
      // .... check running ....
      if (!threadRunning) break topLevel;

      // ---- Finish ----

      reOutF.close();
      reOutF = null;
      reOutStream = null;
      if (imOutF != null) {
        imOutF.close();
        imOutF = null;
        imOutStream = null;
      }
      reInF.close();
      reInF = null;
      reInStream = null;
      if (pr.bool[PR_HASIMINPUT]) {
        imInF.close();
        imInF = null;
        imInStream = null;
      }
      reOutBuf = null;
      imOutBuf = null;
      reInBuf = null;
      imInBuf = null;

      // inform about clipping/ low level
      handleClipping(maxAmp);
    } catch (IOException e1) {
      setError(e1);
    } catch (OutOfMemoryError e2) {
      reOutBuf = null;
      imOutBuf = null;
      reInBuf = null;
      imInBuf = null;
      convBuf1 = null;
      convBuf2 = null;
      System.gc();

      setError(new Exception(ERR_MEMORY));
    }

    // ---- cleanup (topLevel) ----
    convBuf1 = null;
    convBuf2 = null;

    if (reInF != null) {
      reInF.cleanUp();
      reInF = null;
    }
    if (imInF != null) {
      imInF.cleanUp();
      imInF = null;
    }
    if (reOutF != null) {
      reOutF.cleanUp();
      reOutF = null;
    }
    if (imOutF != null) {
      imOutF.cleanUp();
      imOutF = null;
    }
    if (reFloatF != null) {
      for (ch = 0; ch < reFloatF.length; ch++) {
        if (reFloatF[ch] != null) {
          reFloatF[ch].cleanUp();
          reFloatF[ch] = null;
        }
        if (reTempFile[ch] != null) {
          reTempFile[ch].delete();
          reTempFile[ch] = null;
        }
      }
    }
    if (imFloatF != null) {
      for (ch = 0; ch < imFloatF.length; ch++) {
        if (imFloatF[ch] != null) {
          imFloatF[ch].cleanUp();
          imFloatF[ch] = null;
        }
        if (imTempFile[ch] != null) {
          imTempFile[ch].delete();
          imTempFile[ch] = null;
        }
      }
    }
  } // process()
Ejemplo n.º 2
0
  protected void process() {
    long progOff;
    final long progLen;

    AudioFile inF = null;
    final AudioFileDescr inDescr;
    final int inChanNum;
    final long inLength;

    //		final Param				ampRef			= new Param( 1.0, Param.ABS_AMP );			// transform-Referenz

    final PathField ggOutput;

    int chunkLen;

    final ConstQ constQ;
    final float boost = 1f; // 1000f;

    final double minFreq = pr.para[PR_MINFREQ].value;
    final double maxFreq = pr.para[PR_MAXFREQ].value;
    final double timeRes = pr.para[PR_TIMERES].value;
    final int bandsPerOct = (int) pr.para[PR_BANDSPEROCT].value;
    final int maxFFTSize = 256 << pr.intg[PR_MAXFFTSIZE];
    final boolean color = false;

    final int bitsPerSmp;
    ImageFile outF = null;
    final ImageStream imgStream;
    final byte[] row;
    final int overlapSize;

    final int width, height;
    final int inBufSize;
    final float[][] inBuf;
    final int fftSize;
    final int stepSize;
    final int numKernels;
    final float[] kernel;
    //		final float[]			hsb	= new float[ 3 ];
    final double signalCeil =
        pr.para[PR_SIGNALCEIL]
            .value; // (Param.transform( pr.para[ PR_SIGNALCEIL ], Param.ABS_AMP, ampRef, null
    // )).value;
    final double noiseFloor =
        pr.para[PR_NOISEFLOOR]
            .value; // (Param.transform( pr.para[ PR_NOISEFLOOR ], Param.ABS_AMP, ampRef, null
    // )).value;
    final double dynamic = signalCeil - noiseFloor;
    int rgb;
    int winSize, inOff;
    long framesRead;
    //		float					brightness;

    topLevel:
    try {

      // ---- open input, output; init ----
      // ptrn input
      inF = AudioFile.openAsRead(new File(pr.text[PR_INPUTFILE]));
      inDescr = inF.getDescr();
      inChanNum = inDescr.channels;
      inLength = inDescr.length;
      // this helps to prevent errors from empty files!
      if ((inLength < 1) || (inChanNum < 1)) throw new EOFException(ERR_EMPTY);
      if (inChanNum != 1) throw new EOFException(ERR_MONO);
      // .... check running ....
      if (!threadRunning) break topLevel;

      //			if( inChanNum > 1 ) {
      //				System.out.println( "WARNING: Multichannel input. Using mono mix for mosaic
      // correlation!" );
      //			}

      // ---- further inits ----

      constQ = new ConstQ();
      constQ.setSampleRate(inDescr.rate);
      constQ.setMinFreq((float) minFreq);
      constQ.setMaxFreq((float) maxFreq);
      constQ.setBandsPerOct(bandsPerOct);
      constQ.setMaxFFTSize(maxFFTSize);
      constQ.setMaxTimeRes((float) timeRes);
      constQ.createKernels();
      fftSize = constQ.getFFTSize();
      numKernels = constQ.getNumKernels();

      winSize = fftSize; // << 1;
      stepSize = (int) (AudioFileDescr.millisToSamples(inDescr, timeRes) + 0.5);
      overlapSize = fftSize - stepSize;
      height = (int) ((inLength + stepSize - 1) / stepSize);
      width = numKernels;

      // System.out.println( "w " + width + "; h " + height + "; winSize " + winSize + "; inLength "
      // + inLength );

      ggOutput = (PathField) gui.getItemObj(GG_OUTPUTFILE);
      if (ggOutput == null) throw new IOException(ERR_MISSINGPROP);
      outF = new ImageFile(pr.text[PR_OUTPUTFILE], GenericFile.MODE_OUTPUT | ggOutput.getType());
      imgStream = new ImageStream();
      imgStream.bitsPerSmp = 8; // ??? fillStream might not work correctly?
      ggOutput.fillStream(imgStream);
      imgStream.width = width;
      imgStream.height = height;
      imgStream.smpPerPixel = /* color ? 3 :*/ 1;
      bitsPerSmp = imgStream.bitsPerSmp;
      outF.initWriter(imgStream);
      row = outF.allocRow();

      inBufSize = Math.max(8192, fftSize);
      inBuf = new float[inChanNum][inBufSize];
      kernel = new float[numKernels];

      progLen = height;
      progOff = 0;

      // ----==================== processing loop ====================----

      framesRead = 0;
      inOff = 0;

      // final java.util.Random rnd = new java.util.Random();

      for (int y = 0; y < height; y++) {
        if (inOff < 0) {
          inF.seekFrame(Math.min(inF.getFrameNum(), inF.getFramePosition() - inOff));
          inOff = 0;
        }
        // read
        chunkLen = (int) Math.min(inLength - framesRead, winSize - inOff);

        // System.out.println( "readFrames " + inOff + " -> " + chunkLen );

        inF.readFrames(inBuf, inOff, chunkLen);
        if ((inOff + chunkLen) < winSize) {
          Util.clear(inBuf, inOff + chunkLen, winSize - (inOff + chunkLen));
        }

        // transform
        constQ.transform(inBuf[0], 0, winSize, kernel, 0);
        for (int x = 0; x < width; x++) {
          kernel[x] =
              (float)
                  ((Math.min(
                              signalCeil,
                              (Math.max(noiseFloor, MathUtil.linearToDB(kernel[x] * boost))))
                          - noiseFloor)
                      / dynamic);
          //					kernel[ x ] = rnd.nextFloat();
        }

        if (color) {
          throw new IllegalStateException("Color not yet implemented");
          //					if( bitsPerSmp == 8 ) {
          //						for( int x = 0; x < width; x++ ) {
          //
          //						}
          //					} else {
          //						for( int x = 0; x < width; x++ ) {
          //
          //						}
          //					}
        } else {
          if (bitsPerSmp == 8) {
            for (int x = 0; x < width; x++) {
              row[x] = (byte) (kernel[x] * 0xFF + 0.5f);
            }
          } else {
            for (int x = 0, cnt = 0; x < width; x++) {
              rgb = (int) (kernel[x] * 0xFFFF + 0.5f);
              row[cnt++] = (byte) (rgb >> 8);
              row[cnt++] = (byte) rgb;
            }
          }
        }

        outF.writeRow(row);

        // handle overlap
        // System.out.println( "inBuf : " + inBuf[0].length + "; stepSize = " + stepSize + ";
        // overlap = " + overlapSize );
        if (overlapSize > 0) Util.copy(inBuf, stepSize, inBuf, 0, overlapSize);
        inOff = overlapSize;

        framesRead += chunkLen;

        progOff++;
        setProgression((float) progOff / (float) progLen);
        // .... check running ....
        if (!threadRunning) break topLevel;
      } // for x

      inF.close();
      inF = null;
      outF.close();
      outF = null;
    } catch (IOException e1) {
      setError(e1);
    } catch (OutOfMemoryError e2) {
      setError(new Exception(ERR_MEMORY));
    }

    // ---- cleanup (topLevel) ----
    if (outF != null) outF.cleanUp();
    if (inF != null) inF.cleanUp();
  } // process()