예제 #1
0
  private static void bufSizeTest() throws Exception {
    int w, h, i, subsamp;
    byte[] srcBuf, jpegBuf;
    TJCompressor tjc = null;
    Random r = new Random();

    try {
      tjc = new TJCompressor();
      System.out.println("Buffer size regression test");
      for (subsamp = 0; subsamp < TJ.NUMSAMP; subsamp++) {
        for (w = 1; w < 48; w++) {
          int maxh = (w == 1) ? 2048 : 48;
          for (h = 1; h < maxh; h++) {
            if (h % 100 == 0) System.out.format("%04d x %04d\b\b\b\b\b\b\b\b\b\b\b", w, h);
            srcBuf = new byte[w * h * 4];
            jpegBuf = new byte[TJ.bufSize(w, h, subsamp)];
            for (i = 0; i < w * h * 4; i++) {
              srcBuf[i] = (byte) (r.nextInt(2) * 255);
            }
            tjc.setSourceImage(srcBuf, w, 0, h, TJ.PF_BGRX);
            tjc.setSubsamp(subsamp);
            tjc.setJPEGQuality(100);
            tjc.compress(jpegBuf, 0);

            srcBuf = new byte[h * w * 4];
            jpegBuf = new byte[TJ.bufSize(h, w, subsamp)];
            for (i = 0; i < h * w * 4; i++) {
              srcBuf[i] = (byte) (r.nextInt(2) * 255);
            }
            tjc.setSourceImage(srcBuf, h, 0, w, TJ.PF_BGRX);
            tjc.compress(jpegBuf, 0);
          }
        }
      }
      System.out.println("Done.      ");
    } catch (Exception e) {
      if (tjc != null) tjc.close();
      throw e;
    }
    if (tjc != null) tjc.close();
  }
예제 #2
0
  private static int compTest(
      TJCompressor tjc,
      byte[] dstBuf,
      int w,
      int h,
      int pf,
      String baseName,
      int subsamp,
      int jpegQual,
      int flags)
      throws Exception {
    String tempstr;
    byte[] srcBuf = null;
    BufferedImage img = null;
    String pfStr;
    double t;
    int size = 0, ps, imgType = pf;

    if (bi) {
      pf = biTypePF(imgType);
      pfStr = biTypeStr(imgType);
    } else pfStr = pixFormatStr[pf];
    ps = TJ.getPixelSize(pf);

    System.out.print(pfStr + " ");
    if (bi) System.out.print("(" + pixFormatStr[pf] + ") ");
    if ((flags & TJ.FLAG_BOTTOMUP) != 0) System.out.print("Bottom-Up");
    else System.out.print("Top-Down ");
    System.out.print(" -> " + subNameLong[subsamp] + " ");
    if (yuv == YUVENCODE) System.out.print("YUV ... ");
    else System.out.print("Q" + jpegQual + " ... ");

    if (bi) {
      img = new BufferedImage(w, h, imgType);
      initImg(img, pf, flags);
      tempstr =
          baseName
              + "_enc_"
              + pfStr
              + "_"
              + (((flags & TJ.FLAG_BOTTOMUP) != 0) ? "BU" : "TD")
              + "_"
              + subName[subsamp]
              + "_Q"
              + jpegQual
              + ".png";
      File file = new File(tempstr);
      ImageIO.write(img, "png", file);
    } else {
      srcBuf = new byte[w * h * ps + 1];
      initBuf(srcBuf, w, w * ps, h, pf, flags);
    }
    Arrays.fill(dstBuf, (byte) 0);

    t = getTime();
    tjc.setSubsamp(subsamp);
    tjc.setJPEGQuality(jpegQual);
    if (bi) {
      if (yuv == YUVENCODE) tjc.encodeYUV(img, dstBuf, flags);
      else tjc.compress(img, dstBuf, flags);
    } else {
      tjc.setSourceImage(srcBuf, w, 0, h, pf);
      if (yuv == YUVENCODE) tjc.encodeYUV(dstBuf, flags);
      else tjc.compress(dstBuf, flags);
    }
    size = tjc.getCompressedSize();
    t = getTime() - t;

    if (yuv == YUVENCODE)
      tempstr =
          baseName
              + "_enc_"
              + pfStr
              + "_"
              + (((flags & TJ.FLAG_BOTTOMUP) != 0) ? "BU" : "TD")
              + "_"
              + subName[subsamp]
              + ".yuv";
    else
      tempstr =
          baseName
              + "_enc_"
              + pfStr
              + "_"
              + (((flags & TJ.FLAG_BOTTOMUP) != 0) ? "BU" : "TD")
              + "_"
              + subName[subsamp]
              + "_Q"
              + jpegQual
              + ".jpg";
    writeJPEG(dstBuf, size, tempstr);

    if (yuv == YUVENCODE) {
      if (checkBufYUV(dstBuf, size, w, h, subsamp) == 1) System.out.print("Passed.");
      else {
        System.out.print("FAILED!");
        exitStatus = -1;
      }
    } else System.out.print("Done.");
    System.out.format("  %.6f ms\n", t * 1000.);
    System.out.println("  Result in " + tempstr);

    return size;
  }