nesa

I'm currently trying to make something like jit.qt.record but for writing 

uncompressed avi files with alpha channel, to avoid unnecessary disk 

fragmentation and time wasting one can get with huge .mov->.avi conversions, 

and quirks many windows programs have when they have to deal with quicktime.

I've found .avi specifications+some java programs writing avi files, and it 

seems to be easy to construct such a file, no problems with that. I'm 

- it seems that my files would be more than 4gb, which is more than 32bits.

in copyVectorToArray of JitterMatrix, what is 'dim - the dimension of the 

- I'll need and int[] array containing 4-plane char jit.matrix data, should 

this 'dim' be width*height? or should i just ignore this, and set it to 0 

I'm currently trying to make something like jit.qt.record but for writing 
uncompressed avi files with alpha channel, to avoid unnecessary disk 
fragmentation and time wasting one can get with huge .mov->.avi conversions, 
and quirks many windows programs have when they have to deal with quicktime.

I've found .avi specifications+some java programs writing avi files, and it 
seems to be easy to construct such a file, no problems with that. I'm 
concerned with the following:

how long is long?
- it seems that my files would be more than 4gb, which is more than 32bits.

in copyVectorToArray of JitterMatrix, what is 'dim - the dimension of the 
vector to copy'?
- I'll need and int[] array containing 4-plane char jit.matrix data, should 
this 'dim' be width*height? or should i just ignore this, and set it to 0 
like in jitvectorprocess.java?

avi-file-writerbasic-java-questions

Not to my knowledge. Sounds great though.

> - it seems that my files would be more than 4gb, which is more than 

http://java.sun.com/docs/books/tutorial/java/nutsandbolts/da

> in copyVectorToArray of JitterMatrix, what is 'dim - the dimension 

The dimension across which to copy (i.e. 0 is a row, 1 is a column, 2 

> - I'll need and int[] array containing 4-plane char jit.matrix 

> data, should this 'dim' be width*height? or should i just ignore 

> this, and set it to 0 like in jitvectorprocess.java?

This would be 0 for rows, and it doesn't span around rows, though in 

1.6, there's also a new method or copying to/from an entire matrix to 

a large 1D array (sorry the javadoc hasn't yet been updated for 1.6), 

but at the bottom, there's raw javadoc. You might also consider 

copying to a BufferedImage if you've already found code which works 

with BufferedImage Data (JitterMatrix.createBufferedImage()).

     * copies a matrix into an int array.

     * The elements of the matrix are read out in row-major order with 

     * A higher-dimensional matrix will populate the array in 2D slices.

     * float32 and float64 matrices will be cast to int.

     * The array parameter must have exactly the same number of cells as 

     * @param data the integer array to populate

     * @return the number of elements from the matrix that were copied 

    public native int copyMatrixToArray(int data[]);

    public native int copyMatrixToArray(float data[]);

    public native int copyMatrixToArray(double data[]);

     * copies an int array into a matrix.

     * The elements of the matrix are written out in row-major order 

     * A higher-dimensional matrix will be populated by the array in 2D 

     * data will be cast to the format of the matrix.

     * @param data the int array to populate the matrix from

     * @return the number of elements from the array that were copied to 

    public native int copyArrayToMatrix(int data[]);

    public native int copyArrayToMatrix(float data[]);

    public native int copyArrayToMatrix(double data[]);

> and java related:
>
> how long is long?
> - it seems that my files would be more than 4gb, which is more than  
> 32bits.

 http://java.sun.com/docs/books/tutorial/java/nutsandbolts/da tatypes.html

> and jitter+java related:
>
> in copyVectorToArray of JitterMatrix, what is 'dim - the dimension  
> of the vector to copy'?

The dimension across which to copy (i.e. 0 is a row, 1 is a column, 2  
would be a vector across depth).

> - I'll need and int[] array containing 4-plane char jit.matrix  
> data, should this 'dim' be width*height? or should i just ignore  
> this, and set it to 0 like in jitvectorprocess.java?

This would be 0 for rows, and it doesn't span around rows, though in  
1.6, there's also a new method or copying to/from an entire matrix to  
a large 1D array (sorry the javadoc hasn't yet been updated for 1.6),  
but at the bottom, there's raw javadoc. You might also consider  
copying to a BufferedImage if you've already found code which works  
with BufferedImage Data (JitterMatrix.createBufferedImage()).

	/**
	 * copies a matrix into an int array.
	 * The elements of the matrix are read out in row-major order with  
planes multiplexed.
	 * A higher-dimensional matrix will populate the array in 2D slices.
	 * float32 and float64 matrices will be cast to int.
	 * The array parameter must have exactly the same number of cells as  
the matrix.
	 * @param data the integer array to populate
	 * @return the number of elements from the matrix that were copied  
to the array
	 */
	public native int copyMatrixToArray(int data[]);
	public native int copyMatrixToArray(float data[]);
	public native int copyMatrixToArray(double data[]);

	/**
	 * copies an int array into a matrix.
	 * The elements of the matrix are written out in row-major order  
with planes multiplexed.
	 * A higher-dimensional matrix will be populated by the array in 2D  
slices.
	 * data will be cast to the format of the matrix.
	 * The array parameter must have exactly the same number of cells as  
the matrix.
	 * @param data the int array to populate the matrix from
	 * @return the number of elements from the array that were copied to  
the matrix
	 */
	public native int copyArrayToMatrix(int data[]);
	public native int copyArrayToMatrix(float data[]);
	public native int copyArrayToMatrix(double data[]);

thanks for java datatypes site, that exactly what i was looking for.

i've been fiddling with jmf, but unfortunately i've just wasted time: can't

get it to export alpha channels properly, and it definitely can't create avi

2.0(>1gb) so it sucks. it seemed a bit slow and memory-hungry too. i guess

it's time to install visual c++ express:)

you bet it does!
thanks for java datatypes site, that exactly  what i was looking for.

i've been fiddling with jmf, but unfortunately i've just wasted time: can't
get it to export alpha channels properly, and it definitely can't create avi
2.0(>1gb) so it sucks. it seemed a bit slow and memory-hungry too. i guess
it's time to install visual c++ express:)

avi file writer+basic java questions