indeo3.c

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

    }

    cur_frm_pos = cur + width * strip->ypos + strip->xpos;

    if((blks_width = strip->width) < 0) 
      blks_width += 3;
    blks_width >>= 2;
    blks_height = strip->height;

    if(ref_vectors != NULL) {
      ref_frm_pos = ref + (ref_vectors[0] + strip->ypos) * width +
        ref_vectors[1] + strip->xpos;
    } else 
      ref_frm_pos = cur_frm_pos - width_tbl[4];

    if(cmd == 2) {
      if(bit_pos <= 0) {
        bit_pos = 8;
        bit_buf = *buf1++;
      }

      bit_pos -= 2;
      cmd = (bit_buf >> bit_pos) & 0x03;

      if(cmd == 0 || ref_vectors != NULL) {
        for(lp1 = 0; lp1 < blks_width; lp1++) {
          for(i = 0, j = 0; i < blks_height; i++, j += width_tbl[1])
            ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
          cur_frm_pos += 4;
          ref_frm_pos += 4;
        }
      } else if(cmd != 1) 
        return;
    } else {
      k = *buf1 >> 4;
      j = *buf1 & 0x0f;
      buf1++;
      lv = j + fflags2;

      if((lv - 8) <= 7 && (k == 0 || k == 3 || k == 10)) {
        cp2 = s->ModPred + ((lv - 8) << 7);
        cp = ref_frm_pos;
        for(i = 0; i < blks_width << 2; i++) { 
            int v = *cp >> 1;
            *(cp++) = cp2[v]; 
        }
      }

      if(k == 1 || k == 4) {
        lv = (hdr[j] & 0xf) + fflags2;
        correction_type_sp[0] = s->corrector_type + (lv << 8);
        correction_lp[0] = correction + (lv << 8);
        lv = (hdr[j] >> 4) + fflags2;
        correction_lp[1] = correction + (lv << 8);
        correction_type_sp[1] = s->corrector_type + (lv << 8);
      } else {
        correctionloworder_lp[0] = correctionloworder_lp[1] = correctionloworder + (lv << 8);
        correctionhighorder_lp[0] = correctionhighorder_lp[1] = correctionhighorder + (lv << 8);
        correction_type_sp[0] = correction_type_sp[1] = s->corrector_type + (lv << 8);
        correction_lp[0] = correction_lp[1] = correction + (lv << 8);
      }

      switch(k) {
        case 1:
        case 0:                    /********** CASE 0 **********/
          for( ; blks_height > 0; blks_height -= 4) {
            for(lp1 = 0; lp1 < blks_width; lp1++) {
              for(lp2 = 0; lp2 < 4; ) {
                k = *buf1++;
                cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2];
                ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2];

                switch(correction_type_sp[0][k]) {
                  case 0:
                    *cur_lp = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
                    lp2++;
                    break;
                  case 1:
                    ((unsigned short *)cur_lp)[0] = ((((unsigned short *)(ref_lp))[0] >> 1)
                      + correction_lp[lp2 & 0x01][*buf1++]) << 1;
                    ((unsigned short *)cur_lp)[1] = ((((unsigned short *)(ref_lp))[1] >> 1)
                      + correction_lp[lp2 & 0x01][k]) << 1;
                    lp2++;
                    break;
                  case 2:
                    if(lp2 == 0) {
                      for(i = 0, j = 0; i < 2; i++, j += width_tbl[1])
                        cur_lp[j] = ref_lp[j];
                      lp2 += 2;
                    }
                    break;
                  case 3:
                    if(lp2 < 2) {
                      for(i = 0, j = 0; i < (3 - lp2); i++, j += width_tbl[1])
                        cur_lp[j] = ref_lp[j];
                      lp2 = 3;
                    }
                    break;
                  case 8:
                    if(lp2 == 0) {
                      RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)

                      if(rle_v1 == 1 || ref_vectors != NULL) {
                        for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
                          cur_lp[j] = ref_lp[j];
                      }

                      RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
                      break;
                    } else {
                      rle_v1 = 1;
                      rle_v2 = *buf1 - 1;
                    }
                  case 5:
                      LP2_CHECK(buf1,rle_v3,lp2)
                  case 4:
                    for(i = 0, j = 0; i < (4 - lp2); i++, j += width_tbl[1])
                      cur_lp[j] = ref_lp[j];
                    lp2 = 4;
                    break;

                  case 7:
                    if(rle_v3 != 0) 
                      rle_v3 = 0;
                    else {
                      buf1--;
                      rle_v3 = 1;
                    }
                  case 6:
                    if(ref_vectors != NULL) {
                      for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
                        cur_lp[j] = ref_lp[j];
                    }
                    lp2 = 4;
                    break;

                  case 9:
                    lv1 = *buf1++;
                    lv = (lv1 & 0x7F) << 1;
                    lv += (lv << 8);
                    lv += (lv << 16);
                    for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
                      cur_lp[j] = lv;

                    LV1_CHECK(buf1,rle_v3,lv1,lp2)
                    break;
                  default: 
                    return;
                }
              }

              cur_frm_pos += 4;
              ref_frm_pos += 4;
            }

            cur_frm_pos += ((width - blks_width) * 4);
            ref_frm_pos += ((width - blks_width) * 4);
          }
          break;

        case 4:
        case 3:                    /********** CASE 3 **********/
          if(ref_vectors != NULL) 
            return;
          flag1 = 1;

          for( ; blks_height > 0; blks_height -= 8) {
            for(lp1 = 0; lp1 < blks_width; lp1++) {
              for(lp2 = 0; lp2 < 4; ) {
                k = *buf1++;

                cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
                ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];

                switch(correction_type_sp[lp2 & 0x01][k]) {
                  case 0:
                    cur_lp[width_tbl[1]] = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
                    if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
                      cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
                    else
                      cur_lp[0] = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
                    lp2++;
                    break;

                  case 1:
                    ((unsigned short *)cur_lp)[width_tbl[2]] =
                      ((((unsigned short *)ref_lp)[0] >> 1) + correction_lp[lp2 & 0x01][*buf1++]) << 1;
                    ((unsigned short *)cur_lp)[width_tbl[2]+1] =
                      ((((unsigned short *)ref_lp)[1] >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
                    if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
                      cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
                    else
                      cur_lp[0] = cur_lp[width_tbl[1]];
                    lp2++;
                    break;

                  case 2:
                    if(lp2 == 0) {
                      for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
                        cur_lp[j] = *ref_lp;
                      lp2 += 2;
                    }
                    break;

                  case 3:
                    if(lp2 < 2) {
                      for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
                        cur_lp[j] = *ref_lp;
                      lp2 = 3;
                    }
                    break;

                  case 6:
                    lp2 = 4;
                    break;

                  case 7:
                    if(rle_v3 != 0) 
                      rle_v3 = 0;
                    else {
                      buf1--;
                      rle_v3 = 1;
                    }
                    lp2 = 4;
                    break;

                  case 8:
                    if(lp2 == 0) {
                      RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)

                      if(rle_v1 == 1) {
                        for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
                          cur_lp[j] = ref_lp[j];
                      }

                      RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
                      break;
                    } else {
                      rle_v2 = (*buf1) - 1;
                      rle_v1 = 1;
                    }
                  case 5:
                      LP2_CHECK(buf1,rle_v3,lp2)
                  case 4:
                    for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
                      cur_lp[j] = *ref_lp;
                    lp2 = 4;
                    break;

                  case 9:
                    av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
                    lv1 = *buf1++;
                    lv = (lv1 & 0x7F) << 1;
                    lv += (lv << 8);
                    lv += (lv << 16);

                    for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
                      cur_lp[j] = lv;

                    LV1_CHECK(buf1,rle_v3,lv1,lp2)
                    break;

                  default: 
                    return;
                }
              }

              cur_frm_pos += 4;
            }

            cur_frm_pos += (((width * 2) - blks_width) * 4);
            flag1 = 0;
          }
          break;

        case 10:                    /********** CASE 10 **********/
          if(ref_vectors == NULL) {
            flag1 = 1;

            for( ; blks_height > 0; blks_height -= 8) {
              for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
                for(lp2 = 0; lp2 < 4; ) {
                  k = *buf1++;
                  cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
                  ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
                  lv1 = ref_lp[0];
                  lv2 = ref_lp[1];
                  if(lp2 == 0 && flag1 != 0) {
                    lv1 = lv1 & 0x00FF00FF;
                    lv1 = (lv1 << 8) | lv1;
                    lv2 = lv2 & 0x00FF00FF;
                    lv2 = (lv2 << 8) | lv2;
                  }

                  switch(correction_type_sp[lp2 & 0x01][k]) {
                    case 0:
                      cur_lp[width_tbl[1]] = ((lv1 >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1;
                      cur_lp[width_tbl[1]+1] = ((lv2 >> 1) + correctionhighorder_lp[lp2 & 0x01][k]) << 1;
                      if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
                        cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
                        cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
                      } else {
                        cur_lp[0] = cur_lp[width_tbl[1]];
                        cur_lp[1] = cur_lp[width_tbl[1]+1];
                      }
                      lp2++;
                      break;

                    case 1:
                      cur_lp[width_tbl[1]] = ((lv1 >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1++]) << 1;
                      cur_lp[width_tbl[1]+1] = ((lv2 >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1;
                      if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
                        cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
                        cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
                      } else {
                        cur_lp[0] = cur_lp[width_tbl[1]];
                        cur_lp[1] = cur_lp[width_tbl[1]+1];
                      }
                      lp2++;
                      break;

                    case 2:
                      if(lp2 == 0) {
                        if(flag1 != 0) {
                          for(i = 0, j = width_tbl[1]; i < 3; i++, j += width_tbl[1]) {
                            cur_lp[j] = lv1;
                            cur_lp[j+1] = lv2;
                          }
                          cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
                          cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
                        } else {
                          for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
                            cur_lp[j] = lv1;
                            cur_lp[j+1] = lv2;
                          }
                        }
                        lp2 += 2;
                      }
                      break;

                    case 3:
                      if(lp2 < 2) {
                        if(lp2 == 0 && flag1 != 0) {
                          for(i = 0, j = width_tbl[1]; i < 5; i++, j += width_tbl[1]) {
                            cur_lp[j] = lv1;
                            cur_lp[j+1] = lv2;
                          }
                          cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
                          cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
                        } else {
                          for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
                            cur_lp[j] = lv1;
                            cur_lp[j+1] = lv2;
                          }
                        }
                        lp2 = 3;
                      }
                      break;

                    case 8:
                      if(lp2 == 0) {
                        RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
                        if(rle_v1 == 1) {
                          if(flag1 != 0) {
                            for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
                              cur_lp[j] = lv1;
                              cur_lp[j+1] = lv2;
                            }
                            cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
                            cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
                          } else {
                            for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
                              cur_lp[j] = lv1;
                              cur_lp[j+1] = lv2;