Ejemplo n.º 1
0
  public static void loopFilterY(VP8Frame frame) {
    for (int y = 0; y < frame.getMacroBlockRows(); y++) {
      frame.fireLFProgressUpdate(
          50 + (100.0f * ((float) (y + 1) / (float) (frame.getMacroBlockRows()))) / 2);
      for (int x = 0; x < frame.getMacroBlockCols(); x++) {
        MacroBlock rmb = frame.getMacroBlock(x, y);
        MacroBlock bmb = frame.getMacroBlock(x, y);
        int sharpnessLevel = frame.getSharpnessLevel();
        int loop_filter_level = rmb.getFilterLevel();

        if (loop_filter_level != 0) {
          int interior_limit = rmb.getFilterLevel();

          if (sharpnessLevel > 0) {
            interior_limit >>= sharpnessLevel > 4 ? 2 : 1;
            if (interior_limit > 9 - sharpnessLevel) interior_limit = 9 - sharpnessLevel;
          }
          if (interior_limit == 0) interior_limit = 1;

          int hev_threshold = 0;
          if (frame.getFrameType() == 0) /* current frame is a key frame */ {
            if (loop_filter_level >= 40) hev_threshold = 2;
            else if (loop_filter_level >= 15) hev_threshold = 1;
          } else /* current frame is an interframe */ {
            if (loop_filter_level >= 40) hev_threshold = 3;
            else if (loop_filter_level >= 20) hev_threshold = 2;
            else if (loop_filter_level >= 15) hev_threshold = 1;
          }

          /* Luma and Chroma use the same inter-macroblock edge limit */
          int mbedge_limit = ((loop_filter_level + 2) * 2) + interior_limit;
          /* Luma and Chroma use the same inter-subblock edge limit */
          int sub_bedge_limit = (loop_filter_level * 2) + interior_limit;

          // left
          if (x > 0) {
            MacroBlock lmb = frame.getMacroBlock(x - 1, y);
            for (int b = 0; b < 4; b++) {
              SubBlock rsb = rmb.getSubBlock(SubBlock.PLANE.Y1, 0, b);
              SubBlock lsb = lmb.getSubBlock(SubBlock.PLANE.Y1, 3, b);
              for (int a = 0; a < 4; a++) {
                Segment seg = getSegH(rsb, lsb, a);
                MBfilter(hev_threshold, interior_limit, mbedge_limit, seg);
                setSegH(rsb, lsb, seg, a);
              }
            }
          }
          // sb left
          if (!rmb.isSkip_inner_lf()) {
            for (int a = 1; a < 4; a++) {
              for (int b = 0; b < 4; b++) {
                SubBlock lsb = rmb.getSubBlock(SubBlock.PLANE.Y1, a - 1, b);
                SubBlock rsb = rmb.getSubBlock(SubBlock.PLANE.Y1, a, b);
                for (int c = 0; c < 4; c++) {
                  // System.out.println("sbleft a:"+a+" b:"+b+" c:"+c);
                  Segment seg = getSegH(rsb, lsb, c);
                  subblock_filter(hev_threshold, interior_limit, sub_bedge_limit, seg);
                  setSegH(rsb, lsb, seg, c);
                }
              }
            }
          }
          // top
          if (y > 0) {
            MacroBlock tmb = frame.getMacroBlock(x, y - 1);
            for (int b = 0; b < 4; b++) {
              SubBlock tsb = tmb.getSubBlock(SubBlock.PLANE.Y1, b, 3);
              SubBlock bsb = bmb.getSubBlock(SubBlock.PLANE.Y1, b, 0);
              for (int a = 0; a < 4; a++) {
                Segment seg = getSegV(bsb, tsb, a);
                MBfilter(hev_threshold, interior_limit, mbedge_limit, seg);
                setSegV(bsb, tsb, seg, a);
              }
            }
          }
          // sb top
          if (!rmb.isSkip_inner_lf()) {
            for (int a = 1; a < 4; a++) {
              for (int b = 0; b < 4; b++) {
                SubBlock tsb = bmb.getSubBlock(SubBlock.PLANE.Y1, b, a - 1);
                SubBlock bsb = bmb.getSubBlock(SubBlock.PLANE.Y1, b, a);
                for (int c = 0; c < 4; c++) {
                  Segment seg = getSegV(bsb, tsb, c);
                  subblock_filter(hev_threshold, interior_limit, sub_bedge_limit, seg);
                  setSegV(bsb, tsb, seg, c);
                }
              }
            }
          }
        }
      }
    }
  }
Ejemplo n.º 2
0
  public static void loopFilterSimple(VP8Frame frame) {
    for (int y = 0; y < frame.getMacroBlockRows(); y++) {
      frame.fireLFProgressUpdate(
          (100.0f * ((float) (y + 1) / (float) (frame.getMacroBlockRows()))));
      for (int x = 0; x < frame.getMacroBlockCols(); x++) {
        // System.out.println("x: "+x+" y: "+y);
        MacroBlock rmb = frame.getMacroBlock(x, y);
        MacroBlock bmb = frame.getMacroBlock(x, y);

        int loop_filter_level = rmb.getFilterLevel();
        if (loop_filter_level != 0) {
          int interior_limit = rmb.getFilterLevel();

          int sharpnessLevel = frame.getSharpnessLevel();
          if (sharpnessLevel > 0) {
            interior_limit >>= sharpnessLevel > 4 ? 2 : 1;
            if (interior_limit > 9 - sharpnessLevel) interior_limit = 9 - sharpnessLevel;
          }
          if (interior_limit == 0) interior_limit = 1;

          /* Luma and Chroma use the same inter-subblock edge limit */
          int sub_bedge_limit = (loop_filter_level * 2) + interior_limit;
          if (sub_bedge_limit < 1) sub_bedge_limit = 1;

          /* Luma and Chroma use the same inter-macroblock edge limit */
          int mbedge_limit = sub_bedge_limit + 4;

          // left
          if (x > 0) {
            MacroBlock lmb = frame.getMacroBlock(x - 1, y);
            for (int b = 0; b < 4; b++) {
              SubBlock rsb = rmb.getSubBlock(SubBlock.PLANE.Y1, 0, b);
              SubBlock lsb = lmb.getSubBlock(SubBlock.PLANE.Y1, 3, b);
              for (int a = 0; a < 4; a++) {
                Segment seg = getSegH(rsb, lsb, a);
                // MBfilter(hev_threshold, interior_limit,
                // mbedge_limit, seg);
                // System.out.println(mbedge_limit);
                simple_segment(mbedge_limit, seg);
                setSegH(rsb, lsb, seg, a);
              }
            }
          }

          // sb left
          if (!rmb.isSkip_inner_lf()) {

            for (int a = 1; a < 4; a++) {
              for (int b = 0; b < 4; b++) {
                SubBlock lsb = rmb.getSubBlock(SubBlock.PLANE.Y1, a - 1, b);
                SubBlock rsb = rmb.getSubBlock(SubBlock.PLANE.Y1, a, b);
                for (int c = 0; c < 4; c++) {
                  // System.out.println("sbleft a:"+a+" b:"+b+" c:"+c);
                  Segment seg = getSegH(rsb, lsb, c);
                  simple_segment(sub_bedge_limit, seg);
                  // System.out.println(sub_bedge_limit);
                  // subblock_filter(hev_threshold,interior_limit,sub_bedge_limit,
                  // seg);
                  setSegH(rsb, lsb, seg, c);
                }
              }
            }
          }

          // top
          if (y > 0) {
            MacroBlock tmb = frame.getMacroBlock(x, y - 1);
            for (int b = 0; b < 4; b++) {
              SubBlock tsb = tmb.getSubBlock(SubBlock.PLANE.Y1, b, 3);
              SubBlock bsb = bmb.getSubBlock(SubBlock.PLANE.Y1, b, 0);
              for (int a = 0; a < 4; a++) {
                Segment seg = getSegV(bsb, tsb, a);
                simple_segment(mbedge_limit, seg);
                // System.out.println(mbedge_limit);
                // MBfilter(hev_threshold, interior_limit,
                // mbedge_limit, seg);
                setSegV(bsb, tsb, seg, a);
              }
            }
          }

          // sb top
          if (!rmb.isSkip_inner_lf()) {
            for (int a = 1; a < 4; a++) {
              for (int b = 0; b < 4; b++) {
                SubBlock tsb = bmb.getSubBlock(SubBlock.PLANE.Y1, b, a - 1);
                SubBlock bsb = bmb.getSubBlock(SubBlock.PLANE.Y1, b, a);
                for (int c = 0; c < 4; c++) {
                  // System.out.println("sbtop");
                  Segment seg = getSegV(bsb, tsb, c);
                  simple_segment(sub_bedge_limit, seg);
                  // System.out.println(sub_bedge_limit);
                  // subblock_filter(hev_threshold,interior_limit,sub_bedge_limit,
                  // seg);
                  setSegV(bsb, tsb, seg, c);
                }
              }
            }
          }
        }
      }
    }
  }