Skip to content
GitLab
Menu
Projects
Groups
Snippets
/
Help
Help
Support
Community forum
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in / Register
Toggle navigation
Menu
Open sidebar
Xiph.Org
aom-rav1e
Commits
500b33ec
Commit
500b33ec
authored
Dec 03, 2017
by
Nathan E. Egge
Committed by
Tim Terriberry
Dec 05, 2017
Browse files
Use a Type-IV 8-point DST instead of the Type-VII.
Change-Id: I5c9576069e75b0f369fa9db88d05c0342baf8e6d
parent
0ff69c63
Changes
1
Hide whitespace changes
Inline
Side-by-side
av1/common/daala_tx.c
View file @
500b33ec
...
...
@@ -4760,6 +4760,63 @@ void od_bin_idct8(od_coeff *x, int xstride, const od_coeff y[8]) {
x
[
7
*
xstride
]
=
(
od_coeff
)
r7
;
}
#if 1
void
od_bin_fdst8
(
od_coeff
y
[
8
],
const
od_coeff
*
x
,
int
xstride
)
{
int
r0
;
int
r1
;
int
r2
;
int
r3
;
int
r4
;
int
r5
;
int
r6
;
int
r7
;
r0
=
x
[
0
*
xstride
];
r1
=
x
[
1
*
xstride
];
r2
=
x
[
2
*
xstride
];
r3
=
x
[
3
*
xstride
];
r4
=
x
[
4
*
xstride
];
r5
=
x
[
5
*
xstride
];
r6
=
x
[
6
*
xstride
];
r7
=
x
[
7
*
xstride
];
OD_FDST_8_FLAT
(
r0
,
r1
,
r2
,
r3
,
r4
,
r5
,
r6
,
r7
);
y
[
0
]
=
(
od_coeff
)
r0
;
y
[
1
]
=
(
od_coeff
)
r4
;
y
[
2
]
=
(
od_coeff
)
r2
;
y
[
3
]
=
(
od_coeff
)
r6
;
y
[
4
]
=
(
od_coeff
)
r1
;
y
[
5
]
=
(
od_coeff
)
r5
;
y
[
6
]
=
(
od_coeff
)
r3
;
y
[
7
]
=
(
od_coeff
)
r7
;
}
void
od_bin_idst8
(
od_coeff
*
x
,
int
xstride
,
const
od_coeff
y
[
8
])
{
int
r0
;
int
r1
;
int
r2
;
int
r3
;
int
r4
;
int
r5
;
int
r6
;
int
r7
;
r0
=
y
[
0
];
r4
=
y
[
1
];
r2
=
y
[
2
];
r6
=
y
[
3
];
r1
=
y
[
4
];
r5
=
y
[
5
];
r3
=
y
[
6
];
r7
=
y
[
7
];
OD_IDST_8_FLAT
(
r0
,
r4
,
r2
,
r6
,
r1
,
r5
,
r3
,
r7
);
x
[
0
*
xstride
]
=
(
od_coeff
)
r0
;
x
[
1
*
xstride
]
=
(
od_coeff
)
r1
;
x
[
2
*
xstride
]
=
(
od_coeff
)
r2
;
x
[
3
*
xstride
]
=
(
od_coeff
)
r3
;
x
[
4
*
xstride
]
=
(
od_coeff
)
r4
;
x
[
5
*
xstride
]
=
(
od_coeff
)
r5
;
x
[
6
*
xstride
]
=
(
od_coeff
)
r6
;
x
[
7
*
xstride
]
=
(
od_coeff
)
r7
;
}
#else
const
int
OD_DST_8_PERM
[
8
]
=
{
0
,
7
,
1
,
6
,
2
,
5
,
3
,
4
};
/* Computes the Polynomial Product Y(z) ≡ X(z)*H(z) modulo (z^8 + 1) using
...
...
@@ -4962,7 +5019,7 @@ void od_bin_idst8(od_coeff *x, int xstride, const od_coeff y[8]) {
od_poly_prod_8
(
xp
,
yp
);
for
(
i
=
0
;
i
<
8
;
i
++
)
x
[
i
*
xstride
]
=
xp
[
i
];
}
#endif
void
od_bin_fdct16
(
od_coeff
y
[
16
],
const
od_coeff
*
x
,
int
xstride
)
{
int
s0
;
int
s1
;
...
...
Write
Preview
Supports
Markdown
0%
Try again
or
attach a new file
.
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment