libmng_object_prc.c

Linux下的基于X11的图形开发环境。

  mng_uint32     iNewW     = pBuf->iWidth;
  mng_uint32     iNewH     = pBuf->iHeight;
  mng_magnify_x  fMagnifyX = MNG_NULL;
  mng_magnify_y  fMagnifyY = MNG_NULL;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (pData, MNG_FN_MAGNIFY_IMGOBJECT, MNG_LC_START)
#endif

  if (pBuf->iColortype == 3)           /* indexed color ? */
  {                                    /* concrete buffer ? */
    if ((pBuf->bConcrete) && (pImage->iId))
      MNG_ERROR (pData, MNG_INVALIDCOLORTYPE)

    if (pBuf->iTRNScount)              /* with transparency ? */
      iRetcode = promote_imageobject (pData, pImage, 8, 6, 0);
    else
      iRetcode = promote_imageobject (pData, pImage, 8, 2, 0);

    if (iRetcode)                      /* on error bail out */
      return iRetcode;
  }

  if (pImage->iMAGN_MethodX)           /* determine new width */
  {
    if (pImage->iMAGN_MethodX == 1)
    {
      iNewW   = pImage->iMAGN_ML;
      if (pBuf->iWidth  > 1)
        iNewW = iNewW + pImage->iMAGN_MR;
      if (pBuf->iWidth  > 2)
        iNewW = iNewW + (pBuf->iWidth  - 2) * (pImage->iMAGN_MX);
    }
    else
    {
      iNewW   = pBuf->iWidth  + pImage->iMAGN_ML - 1;
      if (pBuf->iWidth  > 2)
        iNewW = iNewW + pImage->iMAGN_MR - 1;
      if (pBuf->iWidth  > 3)
        iNewW = iNewW + (pBuf->iWidth  - 3) * (pImage->iMAGN_MX - 1);
    }
  }

  if (pImage->iMAGN_MethodY)           /* determine new height */
  {
    if (pImage->iMAGN_MethodY == 1)
    {
      iNewH   = pImage->iMAGN_MT;
      if (pBuf->iHeight > 1)
        iNewH = iNewH + pImage->iMAGN_ML;
      if (pBuf->iHeight > 2)
        iNewH = iNewH + (pBuf->iHeight - 2) * (pImage->iMAGN_MY);
    }
    else
    {
      iNewH   = pBuf->iHeight + pImage->iMAGN_MT - 1;
      if (pBuf->iHeight > 2)
        iNewH = iNewH + pImage->iMAGN_MB - 1;
      if (pBuf->iHeight > 3)
        iNewH = iNewH + (pBuf->iHeight - 3) * (pImage->iMAGN_MY - 1);
    }
  }
                                       /* get new buffer */
  iNewrowsize  = iNewW * pBuf->iSamplesize;
  iNewsize     = iNewH * iNewrowsize;
  
  MNG_ALLOC (pData, pNewdata, iNewsize);

  switch (pBuf->iColortype)            /* determine magnification routines */
  {
    case  0 : ;
    case  8 : {
                if (pBuf->iBitdepth <= 8)
                {
                  switch (pImage->iMAGN_MethodX)
                  {
                    case 1  : { fMagnifyX = magnify_g8_x1; break; }
                    case 2  : { fMagnifyX = magnify_g8_x2; break; }
                    case 3  : { fMagnifyX = magnify_g8_x3; break; }
                    case 4  : { fMagnifyX = magnify_g8_x2; break; }
                    case 5  : { fMagnifyX = magnify_g8_x3; break; }
                  }

                  switch (pImage->iMAGN_MethodY)
                  {
                    case 1  : { fMagnifyY = magnify_g8_y1; break; }
                    case 2  : { fMagnifyY = magnify_g8_y2; break; }
                    case 3  : { fMagnifyY = magnify_g8_y3; break; }
                    case 4  : { fMagnifyY = magnify_g8_y2; break; }
                    case 5  : { fMagnifyY = magnify_g8_y3; break; }
                  }
                }
                else
                {

                  /* TODO: magnify 16-bit */

                }

                break;
              }

    case  2 : ;
    case 10 : {
                if (pBuf->iBitdepth <= 8)
                {
                  switch (pImage->iMAGN_MethodX)
                  {
                    case 1  : { fMagnifyX = magnify_rgb8_x1; break; }
                    case 2  : { fMagnifyX = magnify_rgb8_x2; break; }
                    case 3  : { fMagnifyX = magnify_rgb8_x3; break; }
                    case 4  : { fMagnifyX = magnify_rgb8_x2; break; }
                    case 5  : { fMagnifyX = magnify_rgb8_x3; break; }
                  }

                  switch (pImage->iMAGN_MethodY)
                  {
                    case 1  : { fMagnifyY = magnify_rgb8_y1; break; }
                    case 2  : { fMagnifyY = magnify_rgb8_y2; break; }
                    case 3  : { fMagnifyY = magnify_rgb8_y3; break; }
                    case 4  : { fMagnifyY = magnify_rgb8_y2; break; }
                    case 5  : { fMagnifyY = magnify_rgb8_y3; break; }
                  }
                }
                else
                {

                  /* TODO: magnify 16-bit */

                }

                break;
              }

    case  4 : ;
    case 12 : {
                if (pBuf->iBitdepth <= 8)
                {
                  switch (pImage->iMAGN_MethodX)
                  {
                    case 1  : { fMagnifyX = magnify_ga8_x1; break; }
                    case 2  : { fMagnifyX = magnify_ga8_x2; break; }
                    case 3  : { fMagnifyX = magnify_ga8_x3; break; }
                    case 4  : { fMagnifyX = magnify_ga8_x4; break; }
                    case 5  : { fMagnifyX = magnify_ga8_x5; break; }
                  }

                  switch (pImage->iMAGN_MethodY)
                  {
                    case 1  : { fMagnifyY = magnify_ga8_y1; break; }
                    case 2  : { fMagnifyY = magnify_ga8_y2; break; }
                    case 3  : { fMagnifyY = magnify_ga8_y3; break; }
                    case 4  : { fMagnifyY = magnify_ga8_y4; break; }
                    case 5  : { fMagnifyY = magnify_ga8_y5; break; }
                  }
                }
                else
                {

                  /* TODO: magnify 16-bit */

                }

                break;
              }

    case  6 : ;
    case 14 : {
                if (pBuf->iBitdepth <= 8)
                {
                  switch (pImage->iMAGN_MethodX)
                  {
                    case 1  : { fMagnifyX = magnify_rgba8_x1; break; }
                    case 2  : { fMagnifyX = magnify_rgba8_x2; break; }
                    case 3  : { fMagnifyX = magnify_rgba8_x3; break; }
                    case 4  : { fMagnifyX = magnify_rgba8_x4; break; }
                    case 5  : { fMagnifyX = magnify_rgba8_x5; break; }
                  }

                  switch (pImage->iMAGN_MethodY)
                  {
                    case 1  : { fMagnifyY = magnify_rgba8_y1; break; }
                    case 2  : { fMagnifyY = magnify_rgba8_y2; break; }
                    case 3  : { fMagnifyY = magnify_rgba8_y3; break; }
                    case 4  : { fMagnifyY = magnify_rgba8_y4; break; }
                    case 5  : { fMagnifyY = magnify_rgba8_y5; break; }
                  }
                }
                else
                {

                  /* TODO: magnify 16-bit */

                }

                break;
              }
  }

  pSrcline1 = pBuf->pImgdata;          /* initialize row-loop variables */
  pDstline  = pNewdata;
                                       /* allocate temporary row */
  MNG_ALLOC (pData, pTempline, iNewrowsize)

  for (iY = 0; iY < pBuf->iHeight; iY++)
  {
    pSrcline2 = pSrcline1 + pBuf->iRowsize;

    if (fMagnifyX)                     /* magnifying in X-direction ? */
    {
      iRetcode = fMagnifyX (pData, pImage->iMAGN_MX,
                            pImage->iMAGN_ML, pImage->iMAGN_MR,
                            pBuf->iWidth, pSrcline1, pDstline);

      if (iRetcode)                    /* on error bail out */
      {
        MNG_FREEX (pData, pTempline, iNewrowsize)
        MNG_FREEX (pData, pNewdata,  iNewsize)
        return iRetcode;
      }
    }
    else
    {
      MNG_COPY (pDstline, pSrcline1, iNewrowsize)
    }

    pDstline += iNewrowsize;
                                       /* magnifying in Y-direction ? */
    if ((fMagnifyY) &&
        ((iY < pBuf->iHeight - 1) || (pBuf->iHeight == 1) || (pImage->iMAGN_MethodY == 1)))
    {
      if (iY == 0)                     /* first interval ? */
      {
        if (pBuf->iHeight == 1)        /* single row ? */
          pSrcline2 = MNG_NULL;

        iM = (mng_int32)pImage->iMAGN_MT;
      }
      else                             /* last interval ? */
      if (((pImage->iMAGN_MethodY == 1) && (iY == (pBuf->iHeight - 1))) ||
          ((pImage->iMAGN_MethodY != 1) && (iY == (pBuf->iHeight - 2)))    )
        iM = (mng_int32)pImage->iMAGN_MB;
      else                             /* middle interval */
        iM = (mng_int32)pImage->iMAGN_MY;

      for (iS = 1; iS < iM; iS++)
      {
        iRetcode = fMagnifyY (pData, iS, iM, pBuf->iWidth,
                              pSrcline1, pSrcline2, pTempline);

        if (iRetcode)                  /* on error bail out */
        {
          MNG_FREEX (pData, pTempline, iNewrowsize)
          MNG_FREEX (pData, pNewdata,  iNewsize)
          return iRetcode;
        }

        if (fMagnifyX)                   /* magnifying in X-direction ? */
        {
          iRetcode = fMagnifyX (pData, pImage->iMAGN_MX,
                                pImage->iMAGN_ML, pImage->iMAGN_MR,
                                pBuf->iWidth, pTempline, pDstline);

          if (iRetcode)                  /* on error bail out */
          {
            MNG_FREEX (pData, pTempline, iNewrowsize)
            MNG_FREEX (pData, pNewdata,  iNewsize)
            return iRetcode;
          }
        }
        else
        {
          MNG_COPY (pDstline, pTempline, iNewrowsize)
        }

        pDstline  += iNewrowsize;
      }
    }

    pSrcline1 += pBuf->iRowsize;
  }
                                       /* drop temporary row */
  MNG_FREEX (pData, pTempline, iNewrowsize)
                                       /* drop old pixel-data */
  MNG_FREEX (pData, pBuf->pImgdata, pBuf->iImgdatasize)

  pBuf->pImgdata     = pNewdata;       /* save new buffer dimensions */
  pBuf->iRowsize     = iNewrowsize;
  pBuf->iImgdatasize = iNewsize;
  pBuf->iWidth       = iNewW;
  pBuf->iHeight      = iNewH;

  if (pImage->iId)                     /* real object ? */
  {
    pImage->iMAGN_MethodX = 0;         /* it's done; don't do it again !!! */
    pImage->iMAGN_MethodY = 0;
    pImage->iMAGN_MX      = 0;
    pImage->iMAGN_MY      = 0;
    pImage->iMAGN_ML      = 0;
    pImage->iMAGN_MR      = 0;
    pImage->iMAGN_MT      = 0;
    pImage->iMAGN_MB      = 0;
  }

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (pData, MNG_FN_MAGNIFY_IMGOBJECT, MNG_LC_END)
#endif

  return MNG_NOERROR;
}

/* ************************************************************************** */
/* *                                                                        * */
/* * Animation-object routines                                              * */
/* *                                                                        * */
/* * these handle the animation objects used to re-run parts of a MNG.      * */
/* * eg. during LOOP or TERM processing                                     * */
/* *                                                                        * */
/* ************************************************************************** */

void add_ani_object (mng_datap          pData,
                     mng_object_headerp pObject)
{
  mng_object_headerp pLast = (mng_object_headerp)pData->pLastaniobj;

  if (pLast)                           /* link it as last in the chain */
  {
    pObject->pPrev      = pLast;
    pLast->pNext        = pObject;
  }
  else
  {
    pObject->pPrev      = MNG_NULL;    /* be on the safe side */
    pData->pFirstaniobj = pObject;
  }

  pObject->pNext        = MNG_NULL;    /* be on the safe side */
  pData->pLastaniobj    = pObject;
                                       /* keep track for jumping */
  pObject->iFramenr     = pData->iFrameseq;
  pObject->iLayernr     = pData->iLayerseq;
  pObject->iPlaytime    = pData->iFrametime;
                                       /* save restart object ? */
  if ((pData->bDisplaying) && (!pData->bRunning) && (!pData->pCurraniobj))
    pData->pCurraniobj  = pObject;

  return;
}

/* ************************************************************************** */
/* ************************************************************************** */

mng_retcode create_ani_image (mng_datap pData)
{
  mng_ani_imagep pImage;
  mng_imagep     pCurrent;
  mng_retcode    iRetcode;

#ifdef MNG_SUPPORT_TRACE
  MNG_TRACE (pData, MNG_FN_CREATE_ANI_IMAGE, MNG_LC_START)
#endif

  if (pData->bCacheplayback)           /* caching playback info ? */
  {
    if (pData->bHasDHDR)               /* processing delta-image ? */
      pCurrent = (mng_imagep)pData->pObjzero;