Fixes Ticket4680
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes part of Ticket4680
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes Ticket4657
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This also reduces the amount of memory needed
Fixes Ticket4672

The new code seems slightly faster as well, probably due to better cache usage
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

reduce memory needed for flags
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes Ticket4649
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

These 2 are highly related so they are in the same commit
Fixes part of Ticket4605
Fixes p0_04.j2k
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Split stepsize and data into int and float variants.
Eliminates a number of casts and simplifies spotting errors.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

And define the resolution levels according.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This prevents potential integer overflows
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Now only j2kdec / jpeg2000dec.c remain
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This fixes a TODO item and unifies both decoders structures
It also fixes undefined behavior due to aliasing violations

I choose 2 fields instead of a union because mistakely using the
wrong type with a union will lead to hard to debug "wrong output"
while with 2 fields mistakely using the wrong type will crash
with a null pointer derefernce which is much easier to debug
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This is more clear and less prone to mistakes.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

mant fits in 16bit
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This also changes the cblk size storage method to what jpeg2000 uses
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Based on the 2007 GSoC project from Kamil Nowosad <k.nowosad@students.mimuw.edu.pl>
Updated to current programming standards, style and many more small
fixes by Diego Biurrun <diego@biurrun.de>.
Signed-off-by: Diego Biurrun <diego@biurrun.de>