DLLEXPORT int tj3Set()

in turbojpeg.c [670:799]

• 127 lines of code
• 47 McCabe index (conditional complexity)

DLLEXPORT int tj3Set(tjhandle handle, int param, int value)
{
  static const char FUNCTION_NAME[] = "tj3Set";
  int retval = 0;

  GET_TJINSTANCE(handle, -1);

  switch (param) {
  case TJPARAM_STOPONWARNING:
    SET_BOOL_PARAM(jerr.stopOnWarning);
    break;
  case TJPARAM_BOTTOMUP:
    SET_BOOL_PARAM(bottomUp);
    break;
  case TJPARAM_NOREALLOC:
    if (!(this->init & COMPRESS))
      THROW("TJPARAM_NOREALLOC is not applicable to decompression instances.");
    SET_BOOL_PARAM(noRealloc);
    break;
  case TJPARAM_QUALITY:
    if (!(this->init & COMPRESS))
      THROW("TJPARAM_QUALITY is not applicable to decompression instances.");
    SET_PARAM(quality, 1, 100);
    break;
  case TJPARAM_SUBSAMP:
    SET_PARAM(subsamp, 0, TJ_NUMSAMP - 1);
    break;
  case TJPARAM_JPEGWIDTH:
    if (!(this->init & DECOMPRESS))
      THROW("TJPARAM_JPEGWIDTH is not applicable to compression instances.");
    THROW("TJPARAM_JPEGWIDTH is read-only in decompression instances.");
    break;
  case TJPARAM_JPEGHEIGHT:
    if (!(this->init & DECOMPRESS))
      THROW("TJPARAM_JPEGHEIGHT is not applicable to compression instances.");
    THROW("TJPARAM_JPEGHEIGHT is read-only in decompression instances.");
    break;
  case TJPARAM_PRECISION:
    if (!(this->init & DECOMPRESS))
      THROW("TJPARAM_PRECISION is not applicable to compression instances.");
    THROW("TJPARAM_PRECISION is read-only in decompression instances.");
    break;
  case TJPARAM_COLORSPACE:
    if (!(this->init & COMPRESS))
      THROW("TJPARAM_COLORSPACE is read-only in decompression instances.");
    SET_PARAM(colorspace, 0, TJ_NUMCS - 1);
    break;
  case TJPARAM_FASTUPSAMPLE:
    if (!(this->init & DECOMPRESS))
      THROW("TJPARAM_FASTUPSAMPLE is not applicable to compression instances.");
    SET_BOOL_PARAM(fastUpsample);
    break;
  case TJPARAM_FASTDCT:
    SET_BOOL_PARAM(fastDCT);
    break;
  case TJPARAM_OPTIMIZE:
    if (!(this->init & COMPRESS))
      THROW("TJPARAM_OPTIMIZE is not applicable to decompression instances.");
    SET_BOOL_PARAM(optimize);
    break;
  case TJPARAM_PROGRESSIVE:
    if (!(this->init & COMPRESS))
      THROW("TJPARAM_PROGRESSIVE is read-only in decompression instances.");
    SET_BOOL_PARAM(progressive);
    break;
  case TJPARAM_SCANLIMIT:
    if (!(this->init & DECOMPRESS))
      THROW("TJPARAM_SCANLIMIT is not applicable to compression instances.");
    SET_PARAM(scanLimit, 0, -1);
    break;
  case TJPARAM_ARITHMETIC:
    if (!(this->init & COMPRESS))
      THROW("TJPARAM_ARITHMETIC is read-only in decompression instances.");
    SET_BOOL_PARAM(arithmetic);
    break;
  case TJPARAM_LOSSLESS:
    if (!(this->init & COMPRESS))
      THROW("TJPARAM_LOSSLESS is read-only in decompression instances.");
    SET_BOOL_PARAM(lossless);
    break;
  case TJPARAM_LOSSLESSPSV:
    if (!(this->init & COMPRESS))
      THROW("TJPARAM_LOSSLESSPSV is read-only in decompression instances.");
    SET_PARAM(losslessPSV, 1, 7);
    break;
  case TJPARAM_LOSSLESSPT:
    if (!(this->init & COMPRESS))
      THROW("TJPARAM_LOSSLESSPT is read-only in decompression instances.");
    SET_PARAM(losslessPt, 0, 15);
    break;
  case TJPARAM_RESTARTBLOCKS:
    if (!(this->init & COMPRESS))
      THROW("TJPARAM_RESTARTBLOCKS is not applicable to decompression instances.");
    SET_PARAM(restartIntervalBlocks, 0, 65535);
    if (value != 0) this->restartIntervalRows = 0;
    break;
  case TJPARAM_RESTARTROWS:
    if (!(this->init & COMPRESS))
      THROW("TJPARAM_RESTARTROWS is not applicable to decompression instances.");
    SET_PARAM(restartIntervalRows, 0, 65535);
    if (value != 0) this->restartIntervalBlocks = 0;
    break;
  case TJPARAM_XDENSITY:
    if (!(this->init & COMPRESS))
      THROW("TJPARAM_XDENSITY is read-only in decompression instances.");
    SET_PARAM(xDensity, 1, 65535);
    break;
  case TJPARAM_YDENSITY:
    if (!(this->init & COMPRESS))
      THROW("TJPARAM_YDENSITY is read-only in decompression instances.");
    SET_PARAM(yDensity, 1, 65535);
    break;
  case TJPARAM_DENSITYUNITS:
    if (!(this->init & COMPRESS))
      THROW("TJPARAM_DENSITYUNITS is read-only in decompression instances.");
    SET_PARAM(densityUnits, 0, 2);
    break;
  case TJPARAM_MAXMEMORY:
    SET_PARAM(maxMemory, 0, (int)(min(LONG_MAX / 1048576L, (long)INT_MAX)));
    break;
  case TJPARAM_MAXPIXELS:
    SET_PARAM(maxPixels, 0, -1);
    break;
  default:
    THROW("Invalid parameter");
  }

bailout:
  return retval;
}