bool StreamFieldOutput::WriteToNextFrame( const Picture& myfield )
{
bool ret_val;
ret_val=WriteFieldComponent(myfield.Data(Y_COMP) , myfield.GetPparams().PictureNum(), Y_COMP );
ret_val&=WriteFieldComponent(myfield.Data(U_COMP) , myfield.GetPparams().PictureNum(), U_COMP );
ret_val&=WriteFieldComponent(myfield.Data(V_COMP) , myfield.GetPparams().PictureNum(), V_COMP );
return ret_val;
}
void PictureBuffer::CopyPicture( const Picture& picture )
{
PushPicture(picture.GetPparams());
bool is_present;
Picture & p= GetPicture(picture.GetPparams().PictureNum(), is_present);
if(is_present)
p = picture;
}
bool StreamFieldInput::ReadNextPicture(Picture& mypic)
{
// FIXME: this method is BROKEN!
//return value. Failure if one of the components can't be read,
//success otherwise/.
bool ret_val;
bool is_field1 = ((mypic.GetPparams().PictureNum()%2) == 0);
ret_val=ReadFieldComponent( is_field1, mypic.Data(Y_COMP), Y_COMP);
ret_val&=ReadFieldComponent(is_field1, mypic.Data(U_COMP), U_COMP);
ret_val&=ReadFieldComponent(is_field1, mypic.Data(V_COMP), V_COMP);
int picture_size = m_sparams.Xl()*m_sparams.Yl() +
2*m_sparams.ChromaWidth()*m_sparams.ChromaHeight();
if (is_field1)
{
//Seek back to the beginning of frame so that the next field
//from the frame can be read
m_ip_pic_ptr->seekg (-picture_size, std::ios::cur);
}
return ret_val;
}