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Linshizhi
ffmpeg.wasm-core
Commits
94adca68
Commit
94adca68
authored
Aug 30, 2011
by
Anton Khirnov
Committed by
Michael Niedermayer
Aug 30, 2011
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Plain Diff
ffmpeg: factor out initializing input streams.
parent
8b85b9fa
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Showing
1 changed file
with
35 additions
and
34 deletions
+35
-34
ffmpeg.c
ffmpeg.c
+35
-34
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ffmpeg.c
View file @
94adca68
...
@@ -1882,6 +1882,36 @@ static void print_sdp(OutputFile *output_files, int n)
...
@@ -1882,6 +1882,36 @@ static void print_sdp(OutputFile *output_files, int n)
av_freep
(
&
avc
);
av_freep
(
&
avc
);
}
}
static
int
init_input_stream
(
int
ist_index
,
OutputStream
*
output_streams
,
int
nb_output_streams
,
char
*
error
,
int
error_len
)
{
int
i
;
InputStream
*
ist
=
&
input_streams
[
ist_index
];
if
(
ist
->
decoding_needed
)
{
AVCodec
*
codec
=
ist
->
dec
;
if
(
!
codec
)
codec
=
avcodec_find_decoder
(
ist
->
st
->
codec
->
codec_id
);
if
(
!
codec
)
{
snprintf
(
error
,
sizeof
(
error
),
"Decoder (codec %s) not found for input stream #%d.%d"
,
avcodec_get_name
(
ist
->
st
->
codec
->
codec_id
),
ist
->
file_index
,
ist
->
st
->
index
);
return
AVERROR
(
EINVAL
);
}
if
(
avcodec_open2
(
ist
->
st
->
codec
,
codec
,
&
ist
->
opts
)
<
0
)
{
snprintf
(
error
,
sizeof
(
error
),
"Error while opening decoder for input stream #%d.%d"
,
ist
->
file_index
,
ist
->
st
->
index
);
return
AVERROR
(
EINVAL
);
}
assert_codec_experimental
(
ist
->
st
->
codec
,
0
);
assert_avoptions
(
ist
->
opts
);
}
ist
->
pts
=
ist
->
st
->
avg_frame_rate
.
num
?
-
ist
->
st
->
codec
->
has_b_frames
*
AV_TIME_BASE
/
av_q2d
(
ist
->
st
->
avg_frame_rate
)
:
0
;
ist
->
next_pts
=
AV_NOPTS_VALUE
;
ist
->
is_start
=
1
;
return
0
;
}
/*
/*
* The following code is the main loop of the file converter
* The following code is the main loop of the file converter
*/
*/
...
@@ -1890,7 +1920,7 @@ static int transcode(OutputFile *output_files,
...
@@ -1890,7 +1920,7 @@ static int transcode(OutputFile *output_files,
InputFile
*
input_files
,
InputFile
*
input_files
,
int
nb_input_files
)
int
nb_input_files
)
{
{
int
ret
=
0
,
i
,
j
;
int
ret
=
0
,
i
;
AVFormatContext
*
is
,
*
os
;
AVFormatContext
*
is
,
*
os
;
AVCodecContext
*
codec
,
*
icodec
;
AVCodecContext
*
codec
,
*
icodec
;
OutputStream
*
ost
;
OutputStream
*
ost
;
...
@@ -2180,39 +2210,10 @@ static int transcode(OutputFile *output_files,
...
@@ -2180,39 +2210,10 @@ static int transcode(OutputFile *output_files,
}
}
}
}
/* open each decoder */
/* init input streams */
for
(
i
=
0
;
i
<
nb_input_streams
;
i
++
)
{
for
(
i
=
0
;
i
<
nb_input_streams
;
i
++
)
ist
=
&
input_streams
[
i
];
if
((
ret
=
init_input_stream
(
i
,
output_streams
,
nb_output_streams
,
error
,
sizeof
(
error
))
<
0
))
if
(
ist
->
decoding_needed
)
{
goto
dump_format
;
AVCodec
*
codec
=
ist
->
dec
;
if
(
!
codec
)
codec
=
avcodec_find_decoder
(
ist
->
st
->
codec
->
codec_id
);
if
(
!
codec
)
{
snprintf
(
error
,
sizeof
(
error
),
"Decoder (codec %s) not found for input stream #%d.%d"
,
avcodec_get_name
(
ist
->
st
->
codec
->
codec_id
),
ist
->
file_index
,
ist
->
st
->
index
);
ret
=
AVERROR
(
EINVAL
);
goto
dump_format
;
}
if
(
avcodec_open2
(
ist
->
st
->
codec
,
codec
,
&
ist
->
opts
)
<
0
)
{
snprintf
(
error
,
sizeof
(
error
),
"Error while opening decoder for input stream #%d.%d"
,
ist
->
file_index
,
ist
->
st
->
index
);
ret
=
AVERROR
(
EINVAL
);
goto
dump_format
;
}
assert_codec_experimental
(
ist
->
st
->
codec
,
0
);
assert_avoptions
(
ost
->
opts
);
}
}
/* init pts */
for
(
i
=
0
;
i
<
nb_input_streams
;
i
++
)
{
AVStream
*
st
;
ist
=
&
input_streams
[
i
];
st
=
ist
->
st
;
ist
->
pts
=
st
->
avg_frame_rate
.
num
?
-
st
->
codec
->
has_b_frames
*
AV_TIME_BASE
/
av_q2d
(
st
->
avg_frame_rate
)
:
0
;
ist
->
next_pts
=
AV_NOPTS_VALUE
;
ist
->
is_start
=
1
;
}
/* open files and write file headers */
/* open files and write file headers */
for
(
i
=
0
;
i
<
nb_output_files
;
i
++
)
{
for
(
i
=
0
;
i
<
nb_output_files
;
i
++
)
{
...
...
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