static OPJ_BOOL bmp_read_rle4_data(FILE* IN, OPJ_UINT8* pData,
OPJ_UINT32 stride, OPJ_UINT32 width, OPJ_UINT32 height)
{
- OPJ_UINT32 x, y;
+ OPJ_UINT32 x, y, written;
OPJ_UINT8 *pix;
const OPJ_UINT8 *beyond;
beyond = pData + stride * height;
pix = pData;
- x = y = 0U;
+ x = y = written = 0U;
while (y < height) {
int c = getc(IN);
if (c == EOF) {
for (j = 0; (j < c) && (x < width) &&
((OPJ_SIZE_T)pix < (OPJ_SIZE_T)beyond); j++, x++, pix++) {
*pix = (OPJ_UINT8)((j & 1) ? (c1 & 0x0fU) : ((c1 >> 4) & 0x0fU));
+ written++;
}
} else { /* absolute mode */
c = getc(IN);
c1 = (OPJ_UINT8)getc(IN);
}
*pix = (OPJ_UINT8)((j & 1) ? (c1 & 0x0fU) : ((c1 >> 4) & 0x0fU));
+ written++;
}
if (((c & 3) == 1) || ((c & 3) == 2)) { /* skip padding byte */
getc(IN);
}
}
} /* while(y < height) */
+ if (written != width * height) {
+ fprintf(stderr, "warning, image's actual size does not match advertized one\n");
+ return OPJ_FALSE;
+ }
return OPJ_TRUE;
}