Inherits DD::Image::Iop, and DD::Image::PlanarI.
Inherited by DD::Image::Read.
Public Member Functions | |
| PlanarIop (Node *node) | |
| virtual void | getRequests (const Box &box, const ChannelSet &channels, int count, RequestOutput &reqData) const |
| virtual void | renderStripe (ImagePlane &plane)=0 |
| virtual PlanarI * | getPlanarI () |
| virtual bool | useStripes () const |
| virtual size_t | stripeHeight () const |
| virtual PackedPreference | packedPreference () const |
| virtual bool | renderFullPlanes () const |
| DD::Image::Box | expandToFullTiles (const DD::Image::Box &box) const |
| DD::Image::ChannelSet | expandChannelsToFullPlanes (const DD::Image::ChannelSet &channelSet) |
| PlanarI::PlaneSet | expandToFullPlanes (ChannelSet channelSet) |
| virtual LocalPlaneCache * | getCache () |
Protected Member Functions | |
| virtual void | _open () |
| void | engine (int y, int x, int r, ChannelMask m, Row &row) |
| virtual void | _request (int x, int y, int r, int t, ChannelMask chans, int count) |
| virtual void | doFetchPlane (ImagePlane &plane) |
| virtual ImagePlane | renderStripe (size_t stripe, const ChannelSet &m) |
base class for an Iop which strongly wishes to output planar data, possibly with striping. This implements PlanarI to hint as to how the data should be accessed, and adds ImagePlaneCache (privately) to provide a cache
| virtual void DD::Image::PlanarIop::renderStripe | ( | ImagePlane & | plane | ) | [pure virtual] |
This is the actual rendering function that subclasses should implement.
The subclass is responsible for filling plane to the extent of its bbox and channels. It is guaranteed that the plane will never have more than 4 channels, and that its bounding box will be one of those that getStripeBox() returns. The ChannelSet will be a full layer, but no more than one layer. It might be packed or not depending upon the results of negotiation.
It will only be called for channels in the out_channels as set by _validate.
Implemented in DD::Image::Read.
| virtual bool DD::Image::PlanarIop::useStripes | ( | ) | const [inline, virtual] |
this should be overridden by subclasses if they want striping
Reimplemented in DD::Image::Read.
| virtual size_t DD::Image::PlanarIop::stripeHeight | ( | ) | const [inline, virtual] |
this should be overridden by subclasses to return the desired stripe height
Reimplemented in DD::Image::Read.
| virtual bool DD::Image::PlanarIop::renderFullPlanes | ( | ) | const [inline, virtual] |
whether this PlanarIop needs to render in full planes.
| DD::Image::Box DD::Image::PlanarIop::expandToFullTiles | ( | const DD::Image::Box & | box | ) | const |
this expands the bounding box so as to cover the full extent of all overlapping tiles.
References DD::Image::Box::t(), and DD::Image::Box::y().
| DD::Image::ChannelSet DD::Image::PlanarIop::expandChannelsToFullPlanes | ( | const DD::Image::ChannelSet & | channelSet | ) |
this expands a channel set to include all channels in the planes that contain any of the channels passed in, not just those that have been requested.
| DD::Image::PlanarI::PlaneSet DD::Image::PlanarIop::expandToFullPlanes | ( | ChannelSet | channelSet | ) |
this expands a channel set to include all channels in the planes that contain any of the channels passed in, not just those that have been requested, and returns them as a plane set.
| DD::Image::LocalPlaneCache * DD::Image::PlanarIop::getCache | ( | ) | [virtual] |
return the planar cache for this iop
Reimplemented from DD::Image::PlanarI.
| void DD::Image::PlanarIop::_open | ( | ) | [protected, virtual] |
protected: implementation of this Iop function. Will initialise the planar cache as necessary.
Reimplemented from DD::Image::Iop.
Reimplemented in DD::Image::Read.
| void DD::Image::PlanarIop::engine | ( | int | y, |
| int | x, | ||
| int | r, | ||
| ChannelMask | m, | ||
| Row & | row | ||
| ) | [protected, virtual] |
protected: implementation of engine(). should not be overriden further
Implements DD::Image::Iop.
Reimplemented in DD::Image::Read.
| void DD::Image::PlanarIop::_request | ( | int | x, |
| int | y, | ||
| int | r, | ||
| int | t, | ||
| ChannelMask | chans, | ||
| int | count | ||
| ) | [protected, virtual] |
this should not be overriden by subclasses
if there are no further channels we can just return
we are going to end up calling engine for full tile and all the channels for this plane, so we need to call getRequests() with that
Reimplemented from DD::Image::Iop.
References DD::Image::RequestOutput::doRequest().
| void DD::Image::PlanarIop::doFetchPlane | ( | ImagePlane & | plane | ) | [protected, virtual] |
private: implementation of this Iop function. calls renderStripe to do actual work, which is the one that subclasses should implement
Reimplemented from DD::Image::Iop.
Reimplemented in DD::Image::Read.
References DD::Image::ImagePlane::copyIntersectionFrom(), DD::Image::ImagePlane::fillChannel(), DD::Image::ImagePlane::makeWritable(), DD::Image::ChannelSet::size(), DD::Image::Box::t(), and DD::Image::Box::y().
| DD::Image::ImagePlane DD::Image::PlanarIop::renderStripe | ( | size_t | stripe, |
| const ChannelSet & | m | ||
| ) | [protected, virtual] |
render the given stripe and plane and return the ImagePlane
References DD::Image::ChannelSet::size().