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Mathis Rosenhauer
libaec
Commits
ad908448
Commit
ad908448
authored
Jul 06, 2017
by
Mathis Rosenhauer
Browse files
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Check RSI end only when ID is read
parent
d6f47b1c
Changes
2
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Side-by-side
Showing
2 changed files
with
40 additions
and
60 deletions
+40
-60
src/decode.c
src/decode.c
+37
-60
src/decode.h
src/decode.h
+3
-0
No files found.
src/decode.c
View file @
ad908448
...
@@ -196,27 +196,12 @@ FLUSH(lsb_24)
...
@@ -196,27 +196,12 @@ FLUSH(lsb_24)
FLUSH
(
lsb_16
)
FLUSH
(
lsb_16
)
FLUSH
(
8
)
FLUSH
(
8
)
static
inline
void
check_rsi_end
(
struct
aec_stream
*
strm
)
{
/**
Flush output if end of RSI reached
*/
struct
internal_state
*
state
=
strm
->
state
;
if
(
state
->
rsi_size
==
RSI_USED
(
state
))
{
state
->
flush_output
(
strm
);
state
->
flush_start
=
state
->
rsi_buffer
;
state
->
rsip
=
state
->
rsi_buffer
;
}
}
static
inline
void
put_sample
(
struct
aec_stream
*
strm
,
uint32_t
s
)
static
inline
void
put_sample
(
struct
aec_stream
*
strm
,
uint32_t
s
)
{
{
struct
internal_state
*
state
=
strm
->
state
;
struct
internal_state
*
state
=
strm
->
state
;
*
state
->
rsip
++
=
s
;
*
state
->
rsip
++
=
s
;
strm
->
avail_out
-=
state
->
bytes_per_sample
;
strm
->
avail_out
-=
state
->
bytes_per_sample
;
check_rsi_end
(
strm
);
}
}
static
inline
uint32_t
direct_get
(
struct
aec_stream
*
strm
,
int
n
)
static
inline
uint32_t
direct_get
(
struct
aec_stream
*
strm
,
int
n
)
...
@@ -405,20 +390,29 @@ static int m_id(struct aec_stream *strm)
...
@@ -405,20 +390,29 @@ static int m_id(struct aec_stream *strm)
{
{
struct
internal_state
*
state
=
strm
->
state
;
struct
internal_state
*
state
=
strm
->
state
;
if
(
state
->
rsi_size
==
RSI_USED
(
state
))
{
state
->
flush_output
(
strm
);
state
->
flush_start
=
state
->
rsi_buffer
;
state
->
rsip
=
state
->
rsi_buffer
;
}
if
(
state
->
rsip
==
state
->
rsi_buffer
)
{
if
(
state
->
rsip
==
state
->
rsi_buffer
)
{
if
(
strm
->
flags
&
AEC_PAD_RSI
)
if
(
strm
->
flags
&
AEC_PAD_RSI
)
state
->
bitp
-=
state
->
bitp
%
8
;
state
->
bitp
-=
state
->
bitp
%
8
;
if
(
state
->
pp
)
if
(
state
->
pp
)
{
state
->
ref
=
1
;
state
->
ref
=
1
;
state
->
encoded_block_size
=
strm
->
block_size
-
1
;
}
}
else
{
}
else
{
state
->
ref
=
0
;
state
->
ref
=
0
;
state
->
encoded_block_size
=
strm
->
block_size
;
}
}
if
(
bits_ask
(
strm
,
state
->
id_len
)
==
0
)
if
(
bits_ask
(
strm
,
state
->
id_len
)
==
0
)
return
M_EXIT
;
return
M_EXIT
;
state
->
id
=
bits_get
(
strm
,
state
->
id_len
);
state
->
id
=
bits_get
(
strm
,
state
->
id_len
);
bits_drop
(
strm
,
state
->
id_len
);
bits_drop
(
strm
,
state
->
id_len
);
state
->
mode
=
state
->
id_table
[
state
->
id
];
state
->
mode
=
state
->
id_table
[
state
->
id
];
return
M_CONTINUE
;
return
M_CONTINUE
;
}
}
...
@@ -438,7 +432,6 @@ static int m_split_output(struct aec_stream *strm)
...
@@ -438,7 +432,6 @@ static int m_split_output(struct aec_stream *strm)
bits_drop
(
strm
,
k
);
bits_drop
(
strm
,
k
);
}
while
(
++
state
->
i
<
state
->
n
);
}
while
(
++
state
->
i
<
state
->
n
);
check_rsi_end
(
strm
);
state
->
mode
=
m_id
;
state
->
mode
=
m_id
;
return
M_CONTINUE
;
return
M_CONTINUE
;
}
}
...
@@ -464,45 +457,39 @@ static int m_split_fs(struct aec_stream *strm)
...
@@ -464,45 +457,39 @@ static int m_split_fs(struct aec_stream *strm)
static
int
m_split
(
struct
aec_stream
*
strm
)
static
int
m_split
(
struct
aec_stream
*
strm
)
{
{
size_t
i
;
size_t
i
;
size_t
binary_part
;
int
k
;
int
k
;
struct
internal_state
*
state
=
strm
->
state
;
struct
internal_state
*
state
=
strm
->
state
;
if
(
BUFFERSPACE
(
strm
))
{
if
(
BUFFERSPACE
(
strm
))
{
k
=
state
->
id
-
1
;
k
=
state
->
id
-
1
;
binary_part
=
(
k
*
state
->
encoded_block_size
)
/
8
+
9
;
if
(
state
->
ref
)
if
(
state
->
ref
)
*
state
->
rsip
++
=
direct_get
(
strm
,
strm
->
bits_per_sample
);
*
state
->
rsip
++
=
direct_get
(
strm
,
strm
->
bits_per_sample
);
for
(
i
=
0
;
i
<
st
rm
->
block_size
-
state
->
ref
;
i
++
)
for
(
i
=
0
;
i
<
st
ate
->
encoded_block_size
;
i
++
)
state
->
rsip
[
i
]
=
direct_get_fs
(
strm
)
<<
k
;
state
->
rsip
[
i
]
=
direct_get_fs
(
strm
)
<<
k
;
if
(
k
)
{
if
(
k
)
{
if
(
strm
->
avail_in
<
(
k
*
strm
->
block_size
)
/
8
+
9
)
if
(
strm
->
avail_in
<
binary_part
)
return
M_ERROR
;
return
M_ERROR
;
for
(
i
=
state
->
ref
;
i
<
strm
->
block_size
;
i
++
)
for
(
i
=
0
;
i
<
state
->
encoded_
block_size
;
i
++
)
*
state
->
rsip
++
+=
direct_get
(
strm
,
k
);
*
state
->
rsip
++
+=
direct_get
(
strm
,
k
);
}
else
{
}
else
{
state
->
rsip
+=
st
rm
->
block_size
-
state
->
ref
;
state
->
rsip
+=
st
ate
->
encoded_block_size
;
}
}
strm
->
avail_out
-=
state
->
out_blklen
;
strm
->
avail_out
-=
state
->
out_blklen
;
check_rsi_end
(
strm
);
state
->
mode
=
m_id
;
state
->
mode
=
m_id
;
return
M_CONTINUE
;
}
if
(
state
->
ref
)
{
if
(
copysample
(
strm
)
==
0
)
return
M_EXIT
;
state
->
n
=
strm
->
block_size
-
1
;
}
else
{
}
else
{
state
->
n
=
strm
->
block_size
;
if
(
state
->
ref
&&
(
copysample
(
strm
)
==
0
))
return
M_EXIT
;
state
->
n
=
state
->
encoded_block_size
;
state
->
i
=
0
;
state
->
mode
=
m_split_fs
;
}
}
state
->
i
=
0
;
state
->
mode
=
m_split_fs
;
return
M_CONTINUE
;
return
M_CONTINUE
;
}
}
...
@@ -537,22 +524,16 @@ static int m_zero_block(struct aec_stream *strm)
...
@@ -537,22 +524,16 @@ static int m_zero_block(struct aec_stream *strm)
zero_blocks
--
;
zero_blocks
--
;
}
}
if
(
state
->
ref
)
i
=
zero_blocks
*
strm
->
block_size
-
state
->
ref
;
i
=
zero_blocks
*
strm
->
block_size
-
1
;
else
i
=
zero_blocks
*
strm
->
block_size
;
zero_bytes
=
i
*
state
->
bytes_per_sample
;
zero_bytes
=
i
*
state
->
bytes_per_sample
;
if
(
strm
->
avail_out
>=
zero_bytes
)
{
if
(
state
->
rsi_size
-
RSI_USED
(
state
)
<
i
)
if
(
state
->
rsi_size
-
RSI_USED
(
state
)
<
i
)
return
M_ERROR
;
return
M_ERROR
;
if
(
strm
->
avail_out
>=
zero_bytes
)
{
memset
(
state
->
rsip
,
0
,
i
*
sizeof
(
uint32_t
));
memset
(
state
->
rsip
,
0
,
i
*
sizeof
(
uint32_t
));
state
->
rsip
+=
i
;
state
->
rsip
+=
i
;
strm
->
avail_out
-=
zero_bytes
;
strm
->
avail_out
-=
zero_bytes
;
check_rsi_end
(
strm
);
state
->
mode
=
m_id
;
state
->
mode
=
m_id
;
return
M_CONTINUE
;
return
M_CONTINUE
;
}
}
...
@@ -619,11 +600,10 @@ static int m_se(struct aec_stream *strm)
...
@@ -619,11 +600,10 @@ static int m_se(struct aec_stream *strm)
i
++
;
i
++
;
}
}
state
->
mode
=
m_id
;
state
->
mode
=
m_id
;
return
M_CONTINUE
;
}
else
{
state
->
mode
=
m_se_decode
;
state
->
i
=
state
->
ref
;
}
}
state
->
mode
=
m_se_decode
;
state
->
i
=
state
->
ref
;
return
M_CONTINUE
;
return
M_CONTINUE
;
}
}
...
@@ -634,7 +614,7 @@ static int m_low_entropy_ref(struct aec_stream *strm)
...
@@ -634,7 +614,7 @@ static int m_low_entropy_ref(struct aec_stream *strm)
if
(
state
->
ref
&&
copysample
(
strm
)
==
0
)
if
(
state
->
ref
&&
copysample
(
strm
)
==
0
)
return
M_EXIT
;
return
M_EXIT
;
if
(
state
->
id
==
1
)
{
if
(
state
->
id
==
1
)
{
state
->
mode
=
m_se
;
state
->
mode
=
m_se
;
return
M_CONTINUE
;
return
M_CONTINUE
;
}
}
...
@@ -677,14 +657,11 @@ static int m_uncomp(struct aec_stream *strm)
...
@@ -677,14 +657,11 @@ static int m_uncomp(struct aec_stream *strm)
for
(
i
=
0
;
i
<
strm
->
block_size
;
i
++
)
for
(
i
=
0
;
i
<
strm
->
block_size
;
i
++
)
*
state
->
rsip
++
=
direct_get
(
strm
,
strm
->
bits_per_sample
);
*
state
->
rsip
++
=
direct_get
(
strm
,
strm
->
bits_per_sample
);
strm
->
avail_out
-=
state
->
out_blklen
;
strm
->
avail_out
-=
state
->
out_blklen
;
check_rsi_end
(
strm
);
state
->
mode
=
m_id
;
state
->
mode
=
m_id
;
return
M_CONTINUE
;
}
else
{
state
->
i
=
strm
->
block_size
;
state
->
mode
=
m_uncomp_copy
;
}
}
state
->
i
=
strm
->
block_size
;
state
->
mode
=
m_uncomp_copy
;
return
M_CONTINUE
;
return
M_CONTINUE
;
}
}
...
@@ -736,8 +713,7 @@ int aec_decode_init(struct aec_stream *strm)
...
@@ -736,8 +713,7 @@ int aec_decode_init(struct aec_stream *strm)
else
else
state
->
flush_output
=
flush_lsb_32
;
state
->
flush_output
=
flush_lsb_32
;
}
}
state
->
out_blklen
=
strm
->
block_size
state
->
out_blklen
=
strm
->
block_size
*
state
->
bytes_per_sample
;
*
state
->
bytes_per_sample
;
}
}
else
if
(
strm
->
bits_per_sample
>
8
)
{
else
if
(
strm
->
bits_per_sample
>
8
)
{
state
->
bytes_per_sample
=
2
;
state
->
bytes_per_sample
=
2
;
...
@@ -793,7 +769,9 @@ int aec_decode_init(struct aec_stream *strm)
...
@@ -793,7 +769,9 @@ int aec_decode_init(struct aec_stream *strm)
if
(
state
->
rsi_buffer
==
NULL
)
if
(
state
->
rsi_buffer
==
NULL
)
return
AEC_MEM_ERROR
;
return
AEC_MEM_ERROR
;
state
->
pp
=
strm
->
flags
&
AEC_DATA_PREPROCESS
;
state
->
ref
=
0
;
state
->
ref
=
0
;
state
->
encoded_block_size
=
strm
->
block_size
;
strm
->
total_in
=
0
;
strm
->
total_in
=
0
;
strm
->
total_out
=
0
;
strm
->
total_out
=
0
;
...
@@ -801,7 +779,6 @@ int aec_decode_init(struct aec_stream *strm)
...
@@ -801,7 +779,6 @@ int aec_decode_init(struct aec_stream *strm)
state
->
flush_start
=
state
->
rsi_buffer
;
state
->
flush_start
=
state
->
rsi_buffer
;
state
->
bitp
=
0
;
state
->
bitp
=
0
;
state
->
fs
=
0
;
state
->
fs
=
0
;
state
->
pp
=
strm
->
flags
&
AEC_DATA_PREPROCESS
;
state
->
mode
=
m_id
;
state
->
mode
=
m_id
;
return
AEC_OK
;
return
AEC_OK
;
}
}
...
...
src/decode.h
View file @
ad908448
...
@@ -112,6 +112,9 @@ struct internal_state {
...
@@ -112,6 +112,9 @@ struct internal_state {
/* 1 if current block has reference sample */
/* 1 if current block has reference sample */
int
ref
;
int
ref
;
/* block_size minus reference sample if present */
uint32_t
encoded_block_size
;
/* 1 if postprocessor has to be used */
/* 1 if postprocessor has to be used */
int
pp
;
int
pp
;
...
...
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