On Sun, Nov 12, 2006 at 07:30:32PM +0100, Francesco Poli wrote:
> On Sun, 12 Nov 2006 19:18:31 +0100 Diego Biurrun wrote:
>
> > On Sun, Nov 12, 2006 at 05:56:09PM +0100, Francesco Poli wrote:
> > > On Sun, 12 Nov 2006 05:31:54 +0100 Diego Biurrun wrote:
> > >
> > > > On Sat, Nov 11, 2006 at 12:22:54AM +0100, Francesco Poli wrote:
> [...]
> > > > > Which license is available under?
> > > >
> > > > I would say public domain since I doubt it's copyrightable,
> > > > otherwise you can consider it GPL like the rest of MPlayer.
> > >
> > > Well, it depends on the FFmpeg licensing, I would say.
> >
> > No, it does not, FFmpeg is LGPL with some parts GPL, thus combined it
> > is GPL.
>
> OK, but a part under the GNU LGPL stays under the GNU LGPL when it's
> extracted from FFmpeg.
> While a part under the GNU GPL will always be under the GNU GPL (both as
> part of FFmpeg and when it's taken out).
Of course the license of source files does not change, but combined
binaries are always GPL.
> > Look at the file in question, it's just a handful of defines,
> > that's not copyrightable.
>
> I've not yet seen the file taken from FFmpeg, so I cannot comment on its
> copyrightability.
> Take into account that determining whether something is or is not
> copyrighted can be a hard task and (except for obvious cases) really
> requires a good lawyer to be sure.
> Unfortunately IANAL, so my opinion on the copyrightability of that file
> is not so relevant...
>
> Anyway, is there any legal notice inside the file in question, so that
> we can be on the safe side, should it turn out to be copyrighted?
I've attached the file for your perusal. It's just a bunch of #defines.
If this is copyrightable you can start closing down any sort of free
software distribution ...
Diego
#ifndef MPLAYER_MMX_H
#define MPLAYER_MMX_H
typedef union {
long long q; /* Quadword (64-bit) value */
unsigned long long uq; /* Unsigned Quadword */
int d[2]; /* 2 Doubleword (32-bit) values */
unsigned int ud[2]; /* 2 Unsigned Doubleword */
short w[4]; /* 4 Word (16-bit) values */
unsigned short uw[4]; /* 4 Unsigned Word */
char b[8]; /* 8 Byte (8-bit) values */
unsigned char ub[8]; /* 8 Unsigned Byte */
float s[2]; /* Single-precision (32-bit) value */
} mmx_t; /* On an 8-byte (64-bit) boundary */
#define movq_m2r(var, reg) mmx_m2r(movq, var, reg)
#define movq_r2m(reg, var) mmx_r2m(movq, reg, var)
#define movq_r2r(regs, regd) mmx_r2r(movq, regs, regd)
#define punpcklwd_m2r(var, reg) mmx_m2r(punpcklwd, var, reg)
#define punpcklwd_r2r(regs, regd) mmx_r2r(punpcklwd, regs, regd)
#define punpckhwd_m2r(var, reg) mmx_m2r(punpckhwd, var, reg)
#define punpckhwd_r2r(regs, regd) mmx_r2r(punpckhwd, regs, regd)
#define punpcklbw_r2r(regs, regd) mmx_r2r(punpcklbw, regs, regd)
#define punpckhbw_r2r(regs, regd) mmx_r2r(punpckhbw, regs, regd)
#define punpckhdq_r2r(regs, regd) mmx_r2r(punpckhdq, regs, regd)
#define punpckldq_r2r(regs, regd) mmx_r2r(punpckldq, regs, regd)
#define psubw_m2r(var, reg) mmx_m2r(psubw, var, reg)
#define psubw_r2r(regs, regd) mmx_r2r(psubw, regs, regd)
#define psubsw_r2r(regs, regd) mmx_r2r(psubsw, regs, regd)
#define pmaddwd_r2r(regs, regd) mmx_r2r(pmaddwd, regs, regd)
#define paddw_m2r(var, reg) mmx_m2r(paddw, var, reg)
#define paddw_r2r(regs, regd) mmx_r2r(paddw, regs, regd)
#define psrad_i2r(imm, reg) mmx_i2r(psrad, imm, reg)
#define psllw_i2r(imm, reg) mmx_i2r(psllw, imm, reg)
#define pmulhw_r2r(regs, regd) mmx_r2r(pmulhw, regs, regd)
#define pmulhw_m2r(var, reg) mmx_m2r(pmulhw, var, reg)
#define psraw_i2r(imm, reg) mmx_i2r(psraw, imm, reg)
#define packssdw_r2r(regs, regd) mmx_r2r(packssdw, regs, regd)
#define packuswb_r2r(regs, regd) mmx_r2r(packuswb, regs, regd)
#define pxor_r2r(regs, regd) mmx_r2r(pxor, regs, regd)
#define pcmpgtw_r2r(regs, regd) mmx_r2r(pcmpgtw, regs, regd)
#define por_r2r(regs, regd) mmx_r2r(por, regs, regd)
#define mmx_i2r(op,imm,reg) \
__asm__ __volatile__ (#op " %0, %%" #reg \
: /* nothing */ \
: "i" (imm) )
#define mmx_m2r(op, mem, reg) \
__asm__ __volatile__ (#op " %0, %%" #reg \
: /* nothing */ \
: "m" (mem))
#define mmx_r2m(op, reg, mem) \
__asm__ __volatile__ (#op " %%" #reg ", %0" \
: "=m" (mem) \
: /* nothing */ )
#define mmx_r2r(op, regs, regd) \
__asm__ __volatile__ (#op " %" #regs ", %" #regd)
#define emms() __asm__ __volatile__ ("emms")
#endif /* MPLAYER_MMX_H */
