// Src and dst can be any size. Src and dst have same number of components.
void LLImageRaw::copyScaled( LLImageRaw* src )
{
LLImageRaw* dst = this; // Just for clarity.
llassert_always( (1 == src->getComponents()) || (3 == src->getComponents()) || (4 == src->getComponents()) );
llassert_always( src->getComponents() == dst->getComponents() );
if( (src->getWidth() == dst->getWidth()) && (src->getHeight() == dst->getHeight()) )
{
memcpy( dst->getData(), src->getData(), getWidth() * getHeight() * getComponents() ); /* Flawfinder: ignore */
return;
}
S32 temp_data_size = src->getWidth() * dst->getHeight() * getComponents();
llassert_always(temp_data_size > 0);
std::vector<U8> temp_buffer(temp_data_size);
// Vertical
for( S32 col = 0; col < src->getWidth(); col++ )
{
copyLineScaled( src->getData() + (getComponents() * col), &temp_buffer[0] + (getComponents() * col), src->getHeight(), dst->getHeight(), src->getWidth(), src->getWidth() );
}
// Horizontal
for( S32 row = 0; row < dst->getHeight(); row++ )
{
copyLineScaled( &temp_buffer[0] + (getComponents() * src->getWidth() * row), dst->getData() + (getComponents() * dst->getWidth() * row), src->getWidth(), dst->getWidth(), 1, 1 );
}
}
// Src and dst can be any size. Src and dst have same number of components.
void LLImageRaw::copyScaled( LLImageRaw* src )
{
LLMemType mt1((LLMemType::EMemType)mMemType);
LLImageRaw* dst = this; // Just for clarity.
llassert_always( (1 == src->getComponents()) || (3 == src->getComponents()) || (4 == src->getComponents()) );
llassert_always( src->getComponents() == dst->getComponents() );
if( (src->getWidth() == dst->getWidth()) && (src->getHeight() == dst->getHeight()) )
{
memcpy( dst->getData(), src->getData(), getWidth() * getHeight() * getComponents() ); /* Flawfinder: ignore */
return;
}
// Vertical
S32 temp_data_size = src->getWidth() * dst->getHeight() * getComponents();
llassert_always(temp_data_size > 0);
U8* temp_buffer = new U8[ temp_data_size ];
for( S32 col = 0; col < src->getWidth(); col++ )
{
copyLineScaled( src->getData() + (getComponents() * col), temp_buffer + (getComponents() * col), src->getHeight(), dst->getHeight(), src->getWidth(), src->getWidth() );
}
// Horizontal
for( S32 row = 0; row < dst->getHeight(); row++ )
{
copyLineScaled( temp_buffer + (getComponents() * src->getWidth() * row), dst->getData() + (getComponents() * dst->getWidth() * row), src->getWidth(), dst->getWidth(), 1, 1 );
}
// Clean up
delete[] temp_buffer;
}
// Src and dst can be any size. Src has 4 components. Dst has 3 components.
void LLImageRaw::compositeScaled4onto3(LLImageRaw* src)
{
LLMemType mt1((LLMemType::EMemType)mMemType);
llinfos << "compositeScaled4onto3" << llendl;
LLImageRaw* dst = this; // Just for clarity.
llassert( (4 == src->getComponents()) && (3 == dst->getComponents()) );
// Vertical: scale but no composite
S32 temp_data_size = src->getWidth() * dst->getHeight() * src->getComponents();
U8* temp_buffer = new U8[ temp_data_size ];
for( S32 col = 0; col < src->getWidth(); col++ )
{
copyLineScaled( src->getData() + (src->getComponents() * col), temp_buffer + (src->getComponents() * col), src->getHeight(), dst->getHeight(), src->getWidth(), src->getWidth() );
}
// Horizontal: scale and composite
for( S32 row = 0; row < dst->getHeight(); row++ )
{
compositeRowScaled4onto3( temp_buffer + (src->getComponents() * src->getWidth() * row), dst->getData() + (dst->getComponents() * dst->getWidth() * row), src->getWidth(), dst->getWidth() );
}
// Clean up
delete[] temp_buffer;
}
// Src and dst can be any size. Src has 4 components. Dst has 3 components.
void LLImageRaw::compositeScaled4onto3(LLImageRaw* src)
{
LLMemType mt1(mMemType);
llinfos << "compositeScaled4onto3" << llendl;
LLImageRaw* dst = this; // Just for clarity.
llassert( (4 == src->getComponents()) && (3 == dst->getComponents()) );
S32 temp_data_size = src->getWidth() * dst->getHeight() * src->getComponents();
llassert_always(temp_data_size > 0);
std::vector<U8> temp_buffer(temp_data_size);
// Vertical: scale but no composite
for( S32 col = 0; col < src->getWidth(); col++ )
{
copyLineScaled( src->getData() + (src->getComponents() * col), &temp_buffer[0] + (src->getComponents() * col), src->getHeight(), dst->getHeight(), src->getWidth(), src->getWidth() );
}
// Horizontal: scale and composite
for( S32 row = 0; row < dst->getHeight(); row++ )
{
compositeRowScaled4onto3( &temp_buffer[0] + (src->getComponents() * src->getWidth() * row), dst->getData() + (dst->getComponents() * dst->getWidth() * row), src->getWidth(), dst->getWidth() );
}
}
BOOL LLImageRaw::scale( S32 new_width, S32 new_height, BOOL scale_image_data )
{
llassert((1 == getComponents()) || (3 == getComponents()) || (4 == getComponents()) );
S32 old_width = getWidth();
S32 old_height = getHeight();
if( (old_width == new_width) && (old_height == new_height) )
{
return TRUE; // Nothing to do.
}
// Reallocate the data buffer.
if (scale_image_data)
{
S32 temp_data_size = old_width * new_height * getComponents();
llassert_always(temp_data_size > 0);
std::vector<U8> temp_buffer(temp_data_size);
// Vertical
for( S32 col = 0; col < old_width; col++ )
{
copyLineScaled( getData() + (getComponents() * col), &temp_buffer[0] + (getComponents() * col), old_height, new_height, old_width, old_width );
}
deleteData();
U8* new_buffer = allocateDataSize(new_width, new_height, getComponents());
// <FS:ND> Handle out of memory situations a bit more graceful than a crash
if( !new_buffer )
return FALSE;
// </FS:ND>
// Horizontal
for( S32 row = 0; row < new_height; row++ )
{
copyLineScaled( &temp_buffer[0] + (getComponents() * old_width * row), new_buffer + (getComponents() * new_width * row), old_width, new_width, 1, 1 );
}
}
else
{
// copy out existing image data
S32 temp_data_size = old_width * old_height * getComponents();
std::vector<U8> temp_buffer(temp_data_size);
memcpy(&temp_buffer[0], getData(), temp_data_size);
// allocate new image data, will delete old data
U8* new_buffer = allocateDataSize(new_width, new_height, getComponents());
// <FS:ND> Handle out of memory situations a bit more graceful than a crash
if( !new_buffer )
return FALSE;
// </FS:ND>
for( S32 row = 0; row < new_height; row++ )
{
if (row < old_height)
{
memcpy(new_buffer + (new_width * row * getComponents()), &temp_buffer[0] + (old_width * row * getComponents()), getComponents() * llmin(old_width, new_width));
if (old_width < new_width)
{
// pad out rest of row with black
memset(new_buffer + (getComponents() * ((new_width * row) + old_width)), 0, getComponents() * (new_width - old_width));
}
}
else
{
// pad remaining rows with black
memset(new_buffer + (new_width * row * getComponents()), 0, new_width * getComponents());
}
}
}
return TRUE ;
}
BOOL LLImageRaw::scale( S32 new_width, S32 new_height, BOOL scale_image_data )
{
LLMemType mt1((LLMemType::EMemType)mMemType);
llassert((1 == getComponents()) || (3 == getComponents()) || (4 == getComponents()) );
S32 old_width = getWidth();
S32 old_height = getHeight();
if( (old_width == new_width) && (old_height == new_height) )
{
return TRUE; // Nothing to do.
}
// Reallocate the data buffer.
if (scale_image_data)
{
// Vertical
S32 temp_data_size = old_width * new_height * getComponents();
llassert_always(temp_data_size > 0);
U8* temp_buffer = new U8[ temp_data_size ];
for( S32 col = 0; col < old_width; col++ )
{
copyLineScaled( getData() + (getComponents() * col), temp_buffer + (getComponents() * col), old_height, new_height, old_width, old_width );
}
deleteData();
U8* new_buffer = allocateDataSize(new_width, new_height, getComponents());
// Horizontal
for( S32 row = 0; row < new_height; row++ )
{
copyLineScaled( temp_buffer + (getComponents() * old_width * row), new_buffer + (getComponents() * new_width * row), old_width, new_width, 1, 1 );
}
// Clean up
delete[] temp_buffer;
}
else
{
// copy out existing image data
S32 temp_data_size = old_width * old_height * getComponents();
U8* temp_buffer = new U8[ temp_data_size ];
if (!temp_buffer)
{
llwarns << "Out of memory in LLImageRaw::scale: old (w, h, c) = (" << old_width << ", " << old_height << ", " << (S32)getComponents() <<
") ; new (w, h, c) = (" << new_width << ", " << new_height << ", " << (S32)getComponents() << ")" << llendl;
return FALSE ;
}
memcpy(temp_buffer, getData(), temp_data_size); /* Flawfinder: ignore */
// allocate new image data, will delete old data
U8* new_buffer = allocateDataSize(new_width, new_height, getComponents());
for( S32 row = 0; row < new_height; row++ )
{
if (row < old_height)
{
memcpy(new_buffer + (new_width * row * getComponents()), temp_buffer + (old_width * row * getComponents()), getComponents() * llmin(old_width, new_width)); /* Flawfinder: ignore */
if (old_width < new_width)
{
// pad out rest of row with black
memset(new_buffer + (getComponents() * ((new_width * row) + old_width)), 0, getComponents() * (new_width - old_width));
}
}
else
{
// pad remaining rows with black
memset(new_buffer + (new_width * row * getComponents()), 0, new_width * getComponents());
}
}
// Clean up
delete[] temp_buffer;
}
return TRUE ;
}
