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体验新版 GitCode,发现更多精彩内容 >>
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73142e75
编写于
7月 06, 2013
作者:
L
Luca Barbato
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
fifo: K&R formatting cosmetics
上级
4e7f0b08
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
28 addition
and
24 deletion
+28
-24
libavutil/fifo.c
libavutil/fifo.c
+28
-24
未找到文件。
libavutil/fifo.c
浏览文件 @
73142e75
...
...
@@ -24,11 +24,11 @@
AVFifoBuffer
*
av_fifo_alloc
(
unsigned
int
size
)
{
AVFifoBuffer
*
f
=
av_mallocz
(
sizeof
(
AVFifoBuffer
));
if
(
!
f
)
AVFifoBuffer
*
f
=
av_mallocz
(
sizeof
(
AVFifoBuffer
));
if
(
!
f
)
return
NULL
;
f
->
buffer
=
av_malloc
(
size
);
f
->
end
=
f
->
buffer
+
size
;
f
->
end
=
f
->
buffer
+
size
;
av_fifo_reset
(
f
);
if
(
!
f
->
buffer
)
av_freep
(
&
f
);
...
...
@@ -37,7 +37,7 @@ AVFifoBuffer *av_fifo_alloc(unsigned int size)
void
av_fifo_free
(
AVFifoBuffer
*
f
)
{
if
(
f
)
{
if
(
f
)
{
av_free
(
f
->
buffer
);
av_free
(
f
);
}
...
...
@@ -59,12 +59,13 @@ int av_fifo_space(AVFifoBuffer *f)
return
f
->
end
-
f
->
buffer
-
av_fifo_size
(
f
);
}
int
av_fifo_realloc2
(
AVFifoBuffer
*
f
,
unsigned
int
new_size
)
{
unsigned
int
old_size
=
f
->
end
-
f
->
buffer
;
int
av_fifo_realloc2
(
AVFifoBuffer
*
f
,
unsigned
int
new_size
)
{
unsigned
int
old_size
=
f
->
end
-
f
->
buffer
;
if
(
old_size
<
new_size
)
{
int
len
=
av_fifo_size
(
f
);
AVFifoBuffer
*
f2
=
av_fifo_alloc
(
new_size
);
if
(
old_size
<
new_size
)
{
int
len
=
av_fifo_size
(
f
);
AVFifoBuffer
*
f2
=
av_fifo_alloc
(
new_size
);
if
(
!
f2
)
return
-
1
;
...
...
@@ -72,45 +73,48 @@ int av_fifo_realloc2(AVFifoBuffer *f, unsigned int new_size) {
f2
->
wptr
+=
len
;
f2
->
wndx
+=
len
;
av_free
(
f
->
buffer
);
*
f
=
*
f2
;
*
f
=
*
f2
;
av_free
(
f2
);
}
return
0
;
}
// src must NOT be const as it can be a context for func that may need updating (like a pointer or byte counter)
int
av_fifo_generic_write
(
AVFifoBuffer
*
f
,
void
*
src
,
int
size
,
int
(
*
func
)(
void
*
,
void
*
,
int
))
/* src must NOT be const as it can be a context for func that may need
* updating (like a pointer or byte counter) */
int
av_fifo_generic_write
(
AVFifoBuffer
*
f
,
void
*
src
,
int
size
,
int
(
*
func
)(
void
*
,
void
*
,
int
))
{
int
total
=
size
;
do
{
int
len
=
FFMIN
(
f
->
end
-
f
->
wptr
,
size
);
if
(
func
)
{
if
(
func
(
src
,
f
->
wptr
,
len
)
<=
0
)
if
(
func
)
{
if
(
func
(
src
,
f
->
wptr
,
len
)
<=
0
)
break
;
}
else
{
memcpy
(
f
->
wptr
,
src
,
len
);
src
=
(
uint8_t
*
)
src
+
len
;
src
=
(
uint8_t
*
)
src
+
len
;
}
// Write memory barrier needed for SMP here in theory
f
->
wptr
+=
len
;
if
(
f
->
wptr
>=
f
->
end
)
f
->
wptr
=
f
->
buffer
;
f
->
wndx
+=
len
;
size
-=
len
;
size
-=
len
;
}
while
(
size
>
0
);
return
total
-
size
;
}
int
av_fifo_generic_read
(
AVFifoBuffer
*
f
,
void
*
dest
,
int
buf_size
,
void
(
*
func
)(
void
*
,
void
*
,
int
))
int
av_fifo_generic_read
(
AVFifoBuffer
*
f
,
void
*
dest
,
int
buf_size
,
void
(
*
func
)(
void
*
,
void
*
,
int
))
{
// Read memory barrier needed for SMP here in theory
do
{
int
len
=
FFMIN
(
f
->
end
-
f
->
rptr
,
buf_size
);
if
(
func
)
func
(
dest
,
f
->
rptr
,
len
);
else
{
if
(
func
)
func
(
dest
,
f
->
rptr
,
len
);
else
{
memcpy
(
dest
,
f
->
rptr
,
len
);
dest
=
(
uint8_t
*
)
dest
+
len
;
dest
=
(
uint8_t
*
)
dest
+
len
;
}
// memory barrier needed for SMP here in theory
av_fifo_drain
(
f
,
len
);
...
...
@@ -141,9 +145,9 @@ int main(void)
av_fifo_generic_write
(
fifo
,
&
i
,
sizeof
(
int
),
NULL
);
/* peek at FIFO */
n
=
av_fifo_size
(
fifo
)
/
sizeof
(
int
);
for
(
i
=
-
n
+
1
;
i
<
n
;
i
++
)
{
int
*
v
=
(
int
*
)
av_fifo_peek2
(
fifo
,
i
*
sizeof
(
int
));
n
=
av_fifo_size
(
fifo
)
/
sizeof
(
int
);
for
(
i
=
-
n
+
1
;
i
<
n
;
i
++
)
{
int
*
v
=
(
int
*
)
av_fifo_peek2
(
fifo
,
i
*
sizeof
(
int
));
printf
(
"%d: %d
\n
"
,
i
,
*
v
);
}
printf
(
"
\n
"
);
...
...
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