DD::Image::ToBuffer Class Reference

Takes the output of an image tree and put it into an 8-bit buffer. More...

Inherits DD::Image::NoIop.

List of all members.

Public Types
enum	Transpose {   NONE, YFLIP, XFLIP, R180,   TRANSPOSE, R270, R90, TRANSPOSE1 }
Public Member Functions
	ToBuffer (Node *node=0)
const char *	Class () const
const char *	node_help () const
LUT *	lut ()
	The transfer function for output conversion.
int	stride ()
	The number of pixels to next row.
int	depth ()
	Image depth, ie number of channels.
Transpose	transpose ()
	Display orientation.
void	lut (LUT *l)
	The transfer function for output conversion.
void	transpose (Transpose tpose)
	The number of pixels to next row.
void	stride (const int v)
	Image depth, ie number of channels.
void	depth (const int v)
	Display orientation.
virtual void	to_buffer (unsigned char *buffer)
	The master to_buffer() function.
virtual void	to_buffer (U16 *buffer)
virtual void	to_buffer (unsigned char *buffer, int x, int y, int w, int h, ChannelMask channels, int delta=1, int stride=0)
virtual void	to_buffer (U16 *buffer, int x, int y, int w, int h, ChannelMask channels, int delta=1, int stride=0)
virtual void	to_buffer (unsigned char *buffer, int x, int y, int w, int h, int depth, int stride=0)
virtual void	to_buffer (U16 *buffer, int x, int y, int w, int h, int depth, int stride=0)
virtual void	to_buffer (unsigned char *buffer, int w, int h, int depth, Transpose=NONE, int stride=0)
virtual void	to_buffer (U16 *buffer, int w, int h, int depth, Transpose=NONE, int stride=0)
Protected Attributes
LUT *	lut_
int	stride_
int	depth_
Transpose	tpose_
void *	buffers [64]

---

Detailed Description

Takes the output of an image tree and put it into an 8-bit buffer.

Hides all the uglyness of calling DDImage and of multithreading.

Potential RLE compressed output types should derive from this class.

---

Member Function Documentation

void ToBuffer::to_buffer

(

unsigned char *

buffer

)

[virtual]

The master to_buffer() function.

The master to buffer function. The others simply set the necessary output attributes, and call this method. This fills the provided buffer with data from the region specified to this class.

References DD::Image::Op::all_forget_request(), DD::Image::IopInfoOwner::channels(), DD::Image::Box::h(), DD::Image::IopInfoOwner::h(), DD::Image::IopInfoOwner::info_, DD::Image::Iop::input(), DD::Image::Thread::numThreads, DD::Image::IopInfoOwner::r(), DD::Image::Iop::request(), DD::Image::Thread::spawn(), DD::Image::IopInfoOwner::t(), DD::Image::Box::w(), DD::Image::IopInfoOwner::w(), DD::Image::Thread::wait(), DD::Image::IopInfoOwner::x(), DD::Image::IopInfoOwner::y(), and DD::Image::IopInfoOwner::ydirection().

Referenced by to_buffer().

void ToBuffer::to_buffer

(

U16 *

buffer

)

[virtual]

Version producing 16-bit colors

References DD::Image::Op::all_forget_request(), DD::Image::IopInfoOwner::channels(), DD::Image::Box::h(), DD::Image::IopInfoOwner::h(), DD::Image::IopInfoOwner::info_, DD::Image::Iop::input(), DD::Image::Thread::numThreads, DD::Image::IopInfoOwner::r(), DD::Image::Iop::request(), DD::Image::Thread::spawn(), DD::Image::IopInfoOwner::t(), DD::Image::Box::w(), DD::Image::IopInfoOwner::w(), DD::Image::Thread::wait(), DD::Image::IopInfoOwner::x(), DD::Image::IopInfoOwner::y(), and DD::Image::IopInfoOwner::ydirection().

void ToBuffer::to_buffer	(	unsigned char *	buffer,
		int	x,
		int	y,
		int	w,
		int	h,
		ChannelMask	channels,
		int	delta = 1,
		int	stride = 0
	)		[virtual]

Read the output and put it into a set of buffers. By cleverly setting the buffer pointers and the delta and stride you should be able to produce any interlace pattern, mirror the image, or file rotate by right angles.

References DD::Image::Box::h(), DD::Image::IopInfoOwner::info_, stride(), to_buffer(), DD::Image::Box::w(), DD::Image::Box::x(), and DD::Image::Box::y().

void ToBuffer::to_buffer	(	unsigned char *	buffer,
		int	x,
		int	y,
		int	w,
		int	h,
		int	depth,
		int	stride = 0
	)		[virtual]

Put the first depth channels of the image into an interlaced buffer in OpenGL format. Pass a negative depth to flip the byte order to BGR or BGRA.

References depth(), DD::Image::Box::h(), DD::Image::IopInfoOwner::info_, stride(), to_buffer(), DD::Image::Box::w(), DD::Image::Box::x(), and DD::Image::Box::y().

void ToBuffer::to_buffer	(	unsigned char *	buffer,
		int	w,
		int	h,
		int	depth,
		Transpose	transpose = NONE,
		int	stride = 0
	)		[virtual]

Put the region 0, 0, w, h into buffer with simple rotations and reflections. Legal values for transpose are NONE=0, YFLIP=1, XFLIP=2, R180=3, TRANSPOSE=4 (0,0 position corner stays the same), R270=5, R90=6, TRANSPOSE1=7 (upper-right corner ends up at 0,0). Pass a negative delta to flip the byte order to BGR.

References depth(), DD::Image::Box::h(), DD::Image::IopInfoOwner::info_, stride(), to_buffer(), transpose(), DD::Image::Box::w(), DD::Image::Box::x(), and DD::Image::Box::y().