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Linshizhi
ffmpeg.wasm-core
Commits
a02fd06a
Commit
a02fd06a
authored
May 23, 2011
by
Anton Khirnov
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v4l2: add a private option for channel.
parent
fc68a8f7
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1 changed file
with
8 additions
and
5 deletions
+8
-5
v4l2.c
libavdevice/v4l2.c
+8
-5
No files found.
libavdevice/v4l2.c
View file @
a02fd06a
...
...
@@ -68,6 +68,7 @@ struct video_data {
void
**
buf_start
;
unsigned
int
*
buf_len
;
char
*
standard
;
int
channel
;
};
struct
buff_data
{
...
...
@@ -452,23 +453,24 @@ static int v4l2_set_parameters(AVFormatContext *s1, AVFormatParameters *ap)
streamparm
.
type
=
V4L2_BUF_TYPE_VIDEO_CAPTURE
;
if
(
ap
->
channel
>=
0
)
{
if
(
ap
->
channel
>
0
)
s
->
channel
=
ap
->
channel
;
/* set tv video input */
memset
(
&
input
,
0
,
sizeof
(
input
));
input
.
index
=
ap
->
channel
;
input
.
index
=
s
->
channel
;
if
(
ioctl
(
s
->
fd
,
VIDIOC_ENUMINPUT
,
&
input
)
<
0
)
{
av_log
(
s1
,
AV_LOG_ERROR
,
"The V4L2 driver ioctl enum input failed:
\n
"
);
return
AVERROR
(
EIO
);
}
av_log
(
s1
,
AV_LOG_DEBUG
,
"The V4L2 driver set input_id: %d, input: %s
\n
"
,
ap
->
channel
,
input
.
name
);
s
->
channel
,
input
.
name
);
if
(
ioctl
(
s
->
fd
,
VIDIOC_S_INPUT
,
&
input
.
index
)
<
0
)
{
av_log
(
s1
,
AV_LOG_ERROR
,
"The V4L2 driver ioctl set input(%d) failed
\n
"
,
ap
->
channel
);
s
->
channel
);
return
AVERROR
(
EIO
);
}
}
#if FF_API_FORMAT_PARAMETERS
if
(
ap
->
standard
)
{
...
...
@@ -694,6 +696,7 @@ static int v4l2_read_close(AVFormatContext *s1)
static
const
AVOption
options
[]
=
{
{
"standard"
,
""
,
offsetof
(
struct
video_data
,
standard
),
FF_OPT_TYPE_STRING
,
{.
str
=
"NTSC"
},
0
,
0
,
AV_OPT_FLAG_DECODING_PARAM
},
{
"channel"
,
""
,
offsetof
(
struct
video_data
,
channel
),
FF_OPT_TYPE_INT
,
{.
dbl
=
0
},
0
,
INT_MAX
,
AV_OPT_FLAG_DECODING_PARAM
},
{
NULL
},
};
...
...
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