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Linshizhi
ffmpeg.wasm-core
Commits
08e50529
Commit
08e50529
authored
Feb 01, 2008
by
Michael Niedermayer
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const
Originally committed as revision 11747 to
svn://svn.ffmpeg.org/ffmpeg/trunk
parent
7e2ea583
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1 changed file
with
16 additions
and
15 deletions
+16
-15
tiff.c
libavcodec/tiff.c
+16
-15
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libavcodec/tiff.c
View file @
08e50529
...
...
@@ -44,25 +44,25 @@ typedef struct TiffContext {
int
strips
,
rps
;
int
sot
;
uint8_t
*
stripdata
;
uint8_t
*
stripsizes
;
const
uint8_t
*
stripdata
;
const
uint8_t
*
stripsizes
;
int
stripsize
,
stripoff
;
LZWState
*
lzw
;
}
TiffContext
;
static
int
tget_short
(
uint8_t
**
p
,
int
le
){
static
int
tget_short
(
const
uint8_t
**
p
,
int
le
){
int
v
=
le
?
AV_RL16
(
*
p
)
:
AV_RB16
(
*
p
);
*
p
+=
2
;
return
v
;
}
static
int
tget_long
(
uint8_t
**
p
,
int
le
){
static
int
tget_long
(
const
uint8_t
**
p
,
int
le
){
int
v
=
le
?
AV_RL32
(
*
p
)
:
AV_RB32
(
*
p
);
*
p
+=
4
;
return
v
;
}
static
int
tget
(
uint8_t
**
p
,
int
type
,
int
le
){
static
int
tget
(
const
uint8_t
**
p
,
int
type
,
int
le
){
switch
(
type
){
case
TIFF_BYTE
:
return
*
(
*
p
)
++
;
case
TIFF_SHORT
:
return
tget_short
(
p
,
le
);
...
...
@@ -71,9 +71,9 @@ static int tget(uint8_t **p, int type, int le){
}
}
static
int
tiff_unpack_strip
(
TiffContext
*
s
,
uint8_t
*
dst
,
int
stride
,
uint8_t
*
src
,
int
size
,
int
lines
){
static
int
tiff_unpack_strip
(
TiffContext
*
s
,
uint8_t
*
dst
,
int
stride
,
const
uint8_t
*
src
,
int
size
,
int
lines
){
int
c
,
line
,
pixels
,
code
;
uint8_t
*
ssrc
=
src
;
const
uint8_t
*
ssrc
=
src
;
int
width
=
s
->
width
*
(
s
->
bpp
/
8
);
#ifdef CONFIG_ZLIB
uint8_t
*
zbuf
;
unsigned
long
outlen
;
...
...
@@ -150,13 +150,14 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, uint8_t *
}
static
int
tiff_decode_tag
(
TiffContext
*
s
,
uint8_t
*
start
,
uint8_t
*
buf
,
uint8_t
*
end_buf
,
AVFrame
*
pic
)
static
int
tiff_decode_tag
(
TiffContext
*
s
,
const
uint8_t
*
start
,
const
uint8_t
*
buf
,
const
uint8_t
*
end_buf
,
AVFrame
*
pic
)
{
int
tag
,
type
,
count
,
off
,
value
=
0
;
uint8_t
*
src
,
*
dst
;
const
uint8_t
*
src
;
uint8_t
*
dst
;
int
i
,
j
,
ssize
,
soff
,
stride
;
uint32_t
*
pal
;
uint8_t
*
rp
,
*
gp
,
*
bp
;
const
uint8_t
*
rp
,
*
gp
,
*
bp
;
tag
=
tget_short
(
&
buf
,
s
->
le
);
type
=
tget_short
(
&
buf
,
s
->
le
);
...
...
@@ -346,14 +347,14 @@ static int tiff_decode_tag(TiffContext *s, uint8_t *start, uint8_t *buf, uint8_t
return
-
1
;
}
if
(
value
==
2
){
src
=
pic
->
data
[
0
];
dst
=
pic
->
data
[
0
];
stride
=
pic
->
linesize
[
0
];
soff
=
s
->
bpp
>>
3
;
ssize
=
s
->
width
*
soff
;
for
(
i
=
0
;
i
<
s
->
height
;
i
++
)
{
for
(
j
=
soff
;
j
<
ssize
;
j
++
)
src
[
j
]
+=
src
[
j
-
soff
];
src
+=
stride
;
dst
[
j
]
+=
dst
[
j
-
soff
];
dst
+=
stride
;
}
}
break
;
...
...
@@ -403,12 +404,12 @@ static int tiff_decode_tag(TiffContext *s, uint8_t *start, uint8_t *buf, uint8_t
static
int
decode_frame
(
AVCodecContext
*
avctx
,
void
*
data
,
int
*
data_size
,
uint8_t
*
buf
,
int
buf_size
)
const
uint8_t
*
buf
,
int
buf_size
)
{
TiffContext
*
const
s
=
avctx
->
priv_data
;
AVFrame
*
picture
=
data
;
AVFrame
*
const
p
=
(
AVFrame
*
)
&
s
->
picture
;
uint8_t
*
orig_buf
=
buf
,
*
end_buf
=
buf
+
buf_size
;
const
uint8_t
*
orig_buf
=
buf
,
*
end_buf
=
buf
+
buf_size
;
int
id
,
le
,
off
;
int
i
,
entries
;
...
...
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