//
// Return the height of the frame in pixels, or zero if it is still undefined.
ULONG HeightOf(void) const
{
ULONG height;
if (m_pDimensions == NULL)
JPG_THROW(OBJECT_DOESNT_EXIST,"Image::HeightOf","no image created or loaded");
height = m_pDimensions->HeightOf();
//
// If the DNL marker is used, it might be that this is zero. In this case,
// take from the largest scale.
if (height == 0 && m_pLast) {
height = m_pLast->HeightOf();
}
return height;
}
/// Upsampler::Upsample
void Upsampler::Upsample(UBYTE **&data,class ImageLayout *src)
{
UWORD i;
// Delete the old image components. Does not release the
// memory we hold.
delete[] m_pComponent;
m_pComponent = NULL;
ReleaseComponents(data);
//
if (m_bChromaOnly) {
m_ulWidth = src->WidthOf();
m_ulHeight = src->HeightOf();
} else {
m_ulWidth = src->WidthOf() * m_ucScaleX;
m_ulHeight = src->HeightOf() * m_ucScaleY;
}
//
m_usDepth = src->DepthOf();
m_pComponent = new struct ComponentLayout[m_usDepth];
//
// Initialize component dimensions.
for(i = 0; i < m_usDepth; i++) {
if (m_bChromaOnly == false || i > 0) {
m_pComponent[i].m_ulWidth = src->WidthOf(i) * m_ucScaleX;
m_pComponent[i].m_ulHeight = src->HeightOf(i) * m_ucScaleY;
} else {
m_pComponent[i].m_ulWidth = src->WidthOf(i);
m_pComponent[i].m_ulHeight = src->HeightOf(i);
}
m_pComponent[i].m_ucBits = src->BitsOf(i);
m_pComponent[i].m_bSigned = src->isSigned(i);
m_pComponent[i].m_bFloat = src->isFloat(i);
if (m_bChromaOnly && i > 0) {
m_pComponent[i].m_ucSubX = 1;
m_pComponent[i].m_ucSubY = 1;
} else {
m_pComponent[i].m_ucSubX = src->SubXOf(i);
m_pComponent[i].m_ucSubY = src->SubYOf(i);
}
}
//
data = new UBYTE *[m_usDepth];
memset(data,0,sizeof(UBYTE *) * m_usDepth);
//
for(i = 0;i < m_usDepth;i++) {
UBYTE bps = (m_pComponent[i].m_ucBits + 7) >> 3;
if (m_pComponent[i].m_bFloat && m_pComponent[i].m_ucBits == 16)
bps = sizeof(FLOAT); // stored as float
//
data[i] = new UBYTE[m_pComponent[i].m_ulWidth * m_pComponent[i].m_ulHeight * bps];
m_pComponent[i].m_ulBytesPerPixel = bps;
m_pComponent[i].m_ulBytesPerRow = bps * m_pComponent[i].m_ulWidth;
m_pComponent[i].m_pPtr = data[i];
}
//
for(i = 0;i < m_usDepth;i++) {
UBYTE sx,sy;
//
if (m_bChromaOnly == false || i > 0) {
sx = m_ucScaleX;
sy = m_ucScaleY;
} else {
sx = 1;
sy = 1;
}
//
if (isSigned(i)) {
if (BitsOf(i) <= 8) {
BilinearFilter<BYTE>((BYTE *)src->DataOf(i),src->BytesPerPixel(i),src->BytesPerRow(i),
(BYTE *)DataOf(i),BytesPerPixel(i),BytesPerRow(i),
WidthOf(i),HeightOf(i),
BYTE(-1UL << (BitsOf(i) - 1)),BYTE((1UL << (BitsOf(i) - 1)) - 1),
sx,sy);
} else if (!isFloat(i) && BitsOf(i) <= 16) {
BilinearFilter<WORD>((WORD *)src->DataOf(i),src->BytesPerPixel(i),src->BytesPerRow(i),
(WORD *)DataOf(i),BytesPerPixel(i),BytesPerRow(i),
WidthOf(i),HeightOf(i),
WORD(-1UL << (BitsOf(i) - 1)),WORD((1UL << (BitsOf(i) - 1)) - 1),
sx,sy);
} else if (!isFloat(i) && BitsOf(i) <= 32) {
BilinearFilter<LONG>((LONG *)src->DataOf(i),src->BytesPerPixel(i),src->BytesPerRow(i),
(LONG *)DataOf(i),BytesPerPixel(i),BytesPerRow(i),
WidthOf(i),HeightOf(i),
LONG(-1UL << (BitsOf(i) - 1)),LONG((1UL << (BitsOf(i) - 1)) - 1),
sx,sy);
} else if (isFloat(i) && BitsOf(i) <= 32) {
BilinearFilter<FLOAT>((FLOAT *)src->DataOf(i),src->BytesPerPixel(i),src->BytesPerRow(i),
(FLOAT *)DataOf(i),BytesPerPixel(i),BytesPerRow(i),
WidthOf(i),HeightOf(i),
-HUGE_VAL,HUGE_VAL,
sx,sy);
} else if (isFloat(i) && BitsOf(i) == 64) {
BilinearFilter<DOUBLE>((DOUBLE *)src->DataOf(i),src->BytesPerPixel(i),src->BytesPerRow(i),
(DOUBLE *)DataOf(i),BytesPerPixel(i),BytesPerRow(i),
WidthOf(i),HeightOf(i),
-HUGE_VAL,HUGE_VAL,
sx,sy);
} else {
throw "unsupported data type";
}
} else {
if (BitsOf(i) <= 8) {
BilinearFilter<UBYTE>((UBYTE *)src->DataOf(i),src->BytesPerPixel(i),src->BytesPerRow(i),
(UBYTE *)DataOf(i),BytesPerPixel(i),BytesPerRow(i),
WidthOf(i),HeightOf(i),
0,UBYTE((1UL << BitsOf(i)) - 1),
sx,sy);
} else if (!isFloat(i) && BitsOf(i) <= 16) {
BilinearFilter<UWORD>((UWORD *)src->DataOf(i),src->BytesPerPixel(i),src->BytesPerRow(i),
(UWORD *)DataOf(i),BytesPerPixel(i),BytesPerRow(i),
WidthOf(i),HeightOf(i),
0,UWORD((1UL << BitsOf(i)) - 1),
sx,sy);
} else if (!isFloat(i) && BitsOf(i) <= 32) {
BilinearFilter<ULONG>((ULONG *)src->DataOf(i),src->BytesPerPixel(i),src->BytesPerRow(i),
(ULONG *)DataOf(i),BytesPerPixel(i),BytesPerRow(i),
WidthOf(i),HeightOf(i),
0,LONG((1UL << BitsOf(i)) - 1),
sx,sy);
} else if (isFloat(i) && BitsOf(i) <= 32) {
BilinearFilter<FLOAT>((FLOAT *)src->DataOf(i),src->BytesPerPixel(i),src->BytesPerRow(i),
(FLOAT *)DataOf(i),BytesPerPixel(i),BytesPerRow(i),
WidthOf(i),HeightOf(i),
0.0,HUGE_VAL,
sx,sy);
} else if (isFloat(i) && BitsOf(i) == 64) {
BilinearFilter<DOUBLE>((DOUBLE *)src->DataOf(i),src->BytesPerPixel(i),src->BytesPerRow(i),
(DOUBLE *)DataOf(i),BytesPerPixel(i),BytesPerRow(i),
WidthOf(i),HeightOf(i),
0.0,HUGE_VAL,
sx,sy);
} else {
throw "unsupported data type";
}
}
}
//
Swap(*src);
}
