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BC
public
external
ffmpeg
Commits
49733979
Commit
49733979
authored
Oct 09, 2002
by
Michael Niedermayer
Browse files
mpeg1 2pass encoding
Originally committed as revision 1019 to
svn://svn.ffmpeg.org/ffmpeg/trunk
parent
9c89585a
Changes
1
Hide whitespace changes
Inline
Side-by-side
libavcodec/mpeg12.c
View file @
49733979
...
...
@@ -69,6 +69,16 @@ static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred);
static
UINT16
mv_penalty
[
MAX_FCODE
+
1
][
MAX_MV
*
2
+
1
];
static
UINT8
fcode_tab
[
MAX_MV
*
2
+
1
];
static
inline
int
get_bits_diff
(
MpegEncContext
*
s
){
int
bits
,
ret
;
bits
=
get_bit_count
(
&
s
->
pb
);
ret
=
bits
-
s
->
last_bits
;
s
->
last_bits
=
bits
;
return
ret
;
}
static
void
init_2d_vlc_rl
(
RLTable
*
rl
)
{
int
i
;
...
...
@@ -299,6 +309,9 @@ void mpeg1_encode_mb(MpegEncContext *s,
(
mb_x
==
s
->
mb_width
-
1
&&
mb_y
==
s
->
mb_height
-
1
))))
{
s
->
mb_incr
++
;
s
->
qscale
-=
s
->
dquant
;
s
->
skip_count
++
;
s
->
misc_bits
++
;
s
->
last_bits
++
;
}
else
{
/* output mb incr */
mb_incr
=
s
->
mb_incr
;
...
...
@@ -318,6 +331,8 @@ void mpeg1_encode_mb(MpegEncContext *s,
put_bits
(
&
s
->
pb
,
1
,
1
);
/* macroblock_type : macroblock_quant = 0 */
s
->
qscale
-=
s
->
dquant
;
}
s
->
misc_bits
+=
get_bits_diff
(
s
);
s
->
i_count
++
;
}
else
{
if
(
s
->
mb_intra
)
{
if
(
s
->
dquant
&&
cbp
){
...
...
@@ -327,6 +342,8 @@ void mpeg1_encode_mb(MpegEncContext *s,
put_bits
(
&
s
->
pb
,
5
,
0x03
);
s
->
qscale
-=
s
->
dquant
;
}
s
->
misc_bits
+=
get_bits_diff
(
s
);
s
->
i_count
++
;
}
else
{
if
(
cbp
!=
0
)
{
if
(
motion_x
==
0
&&
motion_y
==
0
)
{
...
...
@@ -336,6 +353,7 @@ void mpeg1_encode_mb(MpegEncContext *s,
}
else
{
put_bits
(
&
s
->
pb
,
2
,
1
);
/* macroblock_pattern only */
}
s
->
misc_bits
+=
get_bits_diff
(
s
);
put_bits
(
&
s
->
pb
,
mbPatTable
[
cbp
-
1
][
1
],
mbPatTable
[
cbp
-
1
][
0
]);
}
else
{
if
(
s
->
dquant
){
...
...
@@ -344,8 +362,10 @@ void mpeg1_encode_mb(MpegEncContext *s,
}
else
{
put_bits
(
&
s
->
pb
,
1
,
1
);
/* motion + cbp */
}
s
->
misc_bits
+=
get_bits_diff
(
s
);
mpeg1_encode_motion
(
s
,
motion_x
-
s
->
last_mv
[
0
][
0
][
0
]);
mpeg1_encode_motion
(
s
,
motion_y
-
s
->
last_mv
[
0
][
0
][
1
]);
s
->
mv_bits
+=
get_bits_diff
(
s
);
put_bits
(
&
s
->
pb
,
mbPatTable
[
cbp
-
1
][
1
],
mbPatTable
[
cbp
-
1
][
0
]);
}
}
else
{
...
...
@@ -353,7 +373,9 @@ void mpeg1_encode_mb(MpegEncContext *s,
mpeg1_encode_motion
(
s
,
motion_x
-
s
->
last_mv
[
0
][
0
][
0
]);
mpeg1_encode_motion
(
s
,
motion_y
-
s
->
last_mv
[
0
][
0
][
1
]);
s
->
qscale
-=
s
->
dquant
;
s
->
mv_bits
+=
get_bits_diff
(
s
);
}
s
->
f_count
++
;
}
}
for
(
i
=
0
;
i
<
6
;
i
++
)
{
...
...
@@ -362,6 +384,10 @@ void mpeg1_encode_mb(MpegEncContext *s,
}
}
s
->
mb_incr
=
1
;
if
(
s
->
mb_intra
)
s
->
i_tex_bits
+=
get_bits_diff
(
s
);
else
s
->
p_tex_bits
+=
get_bits_diff
(
s
);
}
s
->
last_mv
[
0
][
0
][
0
]
=
motion_x
;
s
->
last_mv
[
0
][
0
][
1
]
=
motion_y
;
...
...
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