bool ImageViewport::loadImage(unsigned int *buffer, unsigned int size, unsigned int format, double ts)
{
unsigned int *tmp_image;
bool ret;
// if scale was changed
if (m_scaleChange) {
// reset image
init(m_capSize[0], m_capSize[1]);
}
// size must be identical
if (size < getBuffSize())
return false;
if (m_avail) {
// just copy
return ImageBase::loadImage(buffer, size, format, ts);
}
else {
tmp_image = m_image;
m_image = buffer;
calcViewport(0, ts, format);
ret = m_avail;
m_image = tmp_image;
// since the image was not loaded to our buffer, it's not valid
m_avail = false;
}
return ret;
}
bool ImageBase::loadImage(unsigned int *buffer, unsigned int size, unsigned int format, double ts)
{
unsigned int *d, *s, v, len;
if (getImage(0, ts) != NULL && size >= getBuffSize()) {
switch (format) {
case GL_RGBA:
memcpy(buffer, m_image, getBuffSize());
break;
case GL_BGRA:
len = (unsigned int)m_size[0] * m_size[1];
for (s=m_image, d=buffer; len; len--) {
v = *s++;
*d++ = VT_SWAPBR(v);
}
break;
default:
THRWEXCP(InvalidImageMode,S_OK);
}
return true;
}
return false;
}
