static void bufSizeTest()

in tjunittest.c [720:825]
96 lines of code
32 McCabe index (conditional complexity)

static void bufSizeTest(void)
{
  int w, h, i, subsamp;
  void *srcBuf = NULL;
  unsigned char *dstBuf = NULL;
  tjhandle handle = NULL;
  size_t dstSize = 0;
  int numSamp = TJ_NUMSAMP;

  if ((handle = tj3Init(TJINIT_COMPRESS)) == NULL)
    THROW_TJ(NULL);

  TRY_TJ(handle, tj3Set(handle, TJPARAM_NOREALLOC, !alloc));
  if (lossless) {
    TRY_TJ(handle, tj3Set(handle, TJPARAM_LOSSLESS, lossless));
    TRY_TJ(handle, tj3Set(handle, TJPARAM_LOSSLESSPSV,
                          ((psv++ - 1) % 7) + 1));
    numSamp = 1;
  } else
    TRY_TJ(handle, tj3Set(handle, TJPARAM_QUALITY, 100));

  printf("Buffer size regression test\n");
  for (subsamp = 0; subsamp < numSamp; subsamp++) {
    TRY_TJ(handle, tj3Set(handle, TJPARAM_SUBSAMP, subsamp));
    for (w = 1; w < 48; w++) {
      int maxh = (w == 1) ? 2048 : 48;

      for (h = 1; h < maxh; h++) {
        if (h % 100 == 0) printf("%.4d x %.4d\b\b\b\b\b\b\b\b\b\b\b", w, h);
        if ((srcBuf = malloc(w * h * 4 * sampleSize)) == NULL)
          THROW("Memory allocation failure");
        if (!alloc || doYUV) {
          if (doYUV) dstSize = tj3YUVBufSize(w, yuvAlign, h, subsamp);
          else dstSize = tj3JPEGBufSize(w, h, subsamp);
          if ((dstBuf = (unsigned char *)tj3Alloc(dstSize)) == NULL)
            THROW("Memory allocation failure");
        }

        for (i = 0; i < w * h * 4; i++) {
          if (random() < RAND_MAX / 2) setVal(srcBuf, i, 0);
          else setVal(srcBuf, i, maxSample);
        }

        if (doYUV) {
          TRY_TJ(handle, tj3EncodeYUV8(handle, (unsigned char *)srcBuf, w, 0,
                                       h, TJPF_BGRX, dstBuf, yuvAlign));
        } else {
          if (precision == 8) {
            TRY_TJ(handle, tj3Compress8(handle, (unsigned char *)srcBuf, w, 0,
                                        h, TJPF_BGRX, &dstBuf, &dstSize));
          } else if (precision == 12) {
            TRY_TJ(handle, tj3Compress12(handle, (short *)srcBuf, w, 0, h,
                                         TJPF_BGRX, &dstBuf, &dstSize));
          } else {
            TRY_TJ(handle, tj3Compress16(handle, (unsigned short *)srcBuf, w,
                                         0, h, TJPF_BGRX, &dstBuf, &dstSize));
          }
        }
        free(srcBuf);  srcBuf = NULL;
        if (!alloc || doYUV) {
          tj3Free(dstBuf);  dstBuf = NULL;
        }

        if ((srcBuf = malloc(h * w * 4 * sampleSize)) == NULL)
          THROW("Memory allocation failure");
        if (!alloc || doYUV) {
          if (doYUV) dstSize = tj3YUVBufSize(h, yuvAlign, w, subsamp);
          else dstSize = tj3JPEGBufSize(h, w, subsamp);
          if ((dstBuf = (unsigned char *)tj3Alloc(dstSize)) == NULL)
            THROW("Memory allocation failure");
        }

        for (i = 0; i < h * w * 4; i++) {
          if (random() < RAND_MAX / 2) setVal(srcBuf, i, 0);
          else setVal(srcBuf, i, maxSample);
        }

        if (doYUV) {
          TRY_TJ(handle, tj3EncodeYUV8(handle, (unsigned char *)srcBuf, h, 0,
                                       w, TJPF_BGRX, dstBuf, yuvAlign));
        } else {
          if (precision == 8) {
            TRY_TJ(handle, tj3Compress8(handle, (unsigned char *)srcBuf, h, 0,
                                        w, TJPF_BGRX, &dstBuf, &dstSize));
          } else if (precision == 12) {
            TRY_TJ(handle, tj3Compress12(handle, (short *)srcBuf, h, 0, w,
                                         TJPF_BGRX, &dstBuf, &dstSize));
          } else {
            TRY_TJ(handle, tj3Compress16(handle, (unsigned short *)srcBuf, h,
                                         0, w, TJPF_BGRX, &dstBuf, &dstSize));
          }
        }
        free(srcBuf);  srcBuf = NULL;
        if (!alloc || doYUV) {
          tj3Free(dstBuf);  dstBuf = NULL;
        }
      }
    }
  }
  printf("Done.      \n");

bailout:
  free(srcBuf);
  tj3Free(dstBuf);
  tj3Destroy(handle);
}