Skip to content
Projects
Groups
Snippets
Help
Loading...
Help
Contribute to GitLab
Sign in / Register
Toggle navigation
F
ffmpeg.wasm-core
Project
Project
Details
Activity
Cycle Analytics
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Charts
Issues
0
Issues
0
List
Board
Labels
Milestones
Merge Requests
0
Merge Requests
0
CI / CD
CI / CD
Pipelines
Jobs
Schedules
Charts
Wiki
Wiki
Snippets
Snippets
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Charts
Create a new issue
Jobs
Commits
Issue Boards
Open sidebar
Linshizhi
ffmpeg.wasm-core
Commits
a57d560d
Commit
a57d560d
authored
Oct 18, 2012
by
Paul B Mahol
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
LVF demuxer
Signed-off-by:
Paul B Mahol
<
onemda@gmail.com
>
parent
3318d6b9
Hide whitespace changes
Inline
Side-by-side
Showing
6 changed files
with
153 additions
and
1 deletion
+153
-1
Changelog
Changelog
+1
-0
general.texi
doc/general.texi
+1
-0
Makefile
libavformat/Makefile
+1
-0
allformats.c
libavformat/allformats.c
+1
-0
lvfdec.c
libavformat/lvfdec.c
+148
-0
version.h
libavformat/version.h
+1
-1
No files found.
Changelog
View file @
a57d560d
...
...
@@ -15,6 +15,7 @@ version <next>:
- metadata (INFO tag) support in WAV muxer
- subtitles raw text decoder
- support for building DLLs using MSVC
- LVF demuxer
version 1.0:
...
...
doc/general.texi
View file @
a57d560d
...
...
@@ -232,6 +232,7 @@ library:
@tab Used by Linux Media Labs MPEG-4 PCI boards
@item LOAS @tab @tab X
@tab contains LATM multiplexed AAC audio
@item LVF @tab @tab X
@item LXF @tab @tab X
@tab VR native stream format, used by Leitch/Harris' video servers.
@item Matroska @tab X @tab X
...
...
libavformat/Makefile
View file @
a57d560d
...
...
@@ -151,6 +151,7 @@ OBJS-$(CONFIG_LATM_DEMUXER) += rawdec.o
OBJS-$(CONFIG_LATM_MUXER)
+=
latmenc.o
rawenc.o
OBJS-$(CONFIG_LMLM4_DEMUXER)
+=
lmlm4.o
OBJS-$(CONFIG_LOAS_DEMUXER)
+=
loasdec.o
OBJS-$(CONFIG_LVF_DEMUXER)
+=
lvfdec.o
OBJS-$(CONFIG_LXF_DEMUXER)
+=
lxfdec.o
OBJS-$(CONFIG_M4V_DEMUXER)
+=
m4vdec.o
rawdec.o
OBJS-$(CONFIG_M4V_MUXER)
+=
rawenc.o
...
...
libavformat/allformats.c
View file @
a57d560d
...
...
@@ -133,6 +133,7 @@ void av_register_all(void)
REGISTER_MUXDEMUX
(
LATM
,
latm
);
REGISTER_DEMUXER
(
LMLM4
,
lmlm4
);
REGISTER_DEMUXER
(
LOAS
,
loas
);
REGISTER_DEMUXER
(
LVF
,
lvf
);
REGISTER_DEMUXER
(
LXF
,
lxf
);
REGISTER_MUXDEMUX
(
M4V
,
m4v
);
REGISTER_MUXER
(
MD5
,
md5
);
...
...
libavformat/lvfdec.c
0 → 100644
View file @
a57d560d
/*
* LVF demuxer
* Copyright (c) 2012 Paul B Mahol
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/intreadwrite.h"
#include "avformat.h"
#include "riff.h"
static
int
lvf_probe
(
AVProbeData
*
p
)
{
if
(
AV_RL32
(
p
->
buf
)
==
MKTAG
(
'L'
,
'V'
,
'F'
,
'F'
))
return
AVPROBE_SCORE_MAX
/
2
;
return
0
;
}
static
int
lvf_read_header
(
AVFormatContext
*
s
)
{
AVStream
*
st
;
int64_t
next_offset
;
unsigned
size
,
nb_streams
,
id
;
avio_skip
(
s
->
pb
,
16
);
nb_streams
=
avio_rl32
(
s
->
pb
);
if
(
!
nb_streams
)
return
AVERROR_INVALIDDATA
;
if
(
nb_streams
>
2
)
{
av_log_ask_for_sample
(
s
,
"too many streams
\n
"
);
return
AVERROR_PATCHWELCOME
;
}
avio_skip
(
s
->
pb
,
1012
);
while
(
!
url_feof
(
s
->
pb
))
{
id
=
avio_rl32
(
s
->
pb
);
size
=
avio_rl32
(
s
->
pb
);
next_offset
=
avio_tell
(
s
->
pb
)
+
size
;
switch
(
id
)
{
case
MKTAG
(
'0'
,
'0'
,
'f'
,
'm'
):
st
=
avformat_new_stream
(
s
,
0
);
if
(
!
st
)
return
AVERROR
(
ENOMEM
);
st
->
codec
->
codec_type
=
AVMEDIA_TYPE_VIDEO
;
avio_skip
(
s
->
pb
,
4
);
st
->
codec
->
width
=
avio_rl32
(
s
->
pb
);
st
->
codec
->
height
=
avio_rl32
(
s
->
pb
);
avio_skip
(
s
->
pb
,
4
);
st
->
codec
->
codec_tag
=
avio_rl32
(
s
->
pb
);
st
->
codec
->
codec_id
=
ff_codec_get_id
(
ff_codec_bmp_tags
,
st
->
codec
->
codec_tag
);
avpriv_set_pts_info
(
st
,
32
,
1
,
1000
);
break
;
case
MKTAG
(
'0'
,
'1'
,
'f'
,
'm'
):
st
=
avformat_new_stream
(
s
,
0
);
if
(
!
st
)
return
AVERROR
(
ENOMEM
);
st
->
codec
->
codec_type
=
AVMEDIA_TYPE_AUDIO
;
st
->
codec
->
codec_tag
=
avio_rl16
(
s
->
pb
);
st
->
codec
->
channels
=
avio_rl16
(
s
->
pb
);
st
->
codec
->
sample_rate
=
avio_rl16
(
s
->
pb
);
avio_skip
(
s
->
pb
,
8
);
st
->
codec
->
bits_per_coded_sample
=
avio_r8
(
s
->
pb
);
st
->
codec
->
codec_id
=
ff_codec_get_id
(
ff_codec_wav_tags
,
st
->
codec
->
codec_tag
);
avpriv_set_pts_info
(
st
,
32
,
1
,
1000
);
break
;
case
0
:
avio_seek
(
s
->
pb
,
2048
+
8
,
SEEK_SET
);
return
0
;
default:
av_log_ask_for_sample
(
s
,
"unknown id
\n
"
);
return
AVERROR_PATCHWELCOME
;
}
avio_seek
(
s
->
pb
,
next_offset
,
SEEK_SET
);
}
return
AVERROR_EOF
;
}
static
int
lvf_read_packet
(
AVFormatContext
*
s
,
AVPacket
*
pkt
)
{
unsigned
size
,
flags
,
timestamp
,
id
;
int64_t
pos
;
int
ret
,
is_video
=
0
;
pos
=
avio_tell
(
s
->
pb
);
while
(
!
url_feof
(
s
->
pb
))
{
id
=
avio_rl32
(
s
->
pb
);
size
=
avio_rl32
(
s
->
pb
);
if
(
size
==
0xFFFFFFFFu
)
return
AVERROR_EOF
;
switch
(
id
)
{
case
MKTAG
(
'0'
,
'0'
,
'd'
,
'c'
):
is_video
=
1
;
case
MKTAG
(
'0'
,
'1'
,
'w'
,
'b'
):
if
(
size
<
8
)
return
AVERROR_INVALIDDATA
;
timestamp
=
avio_rl32
(
s
->
pb
);
flags
=
avio_rl32
(
s
->
pb
);
ret
=
av_get_packet
(
s
->
pb
,
pkt
,
size
-
8
);
if
(
flags
&
(
1
<<
12
))
pkt
->
flags
|=
AV_PKT_FLAG_KEY
;
pkt
->
stream_index
=
is_video
?
0
:
1
;
pkt
->
pts
=
timestamp
;
pkt
->
pos
=
pos
;
return
ret
;
default:
ret
=
avio_skip
(
s
->
pb
,
size
);
}
if
(
ret
<
0
)
return
ret
;
}
return
AVERROR_EOF
;
}
AVInputFormat
ff_lvf_demuxer
=
{
.
name
=
"lvf"
,
.
long_name
=
NULL_IF_CONFIG_SMALL
(
"LVF"
),
.
read_probe
=
lvf_probe
,
.
read_header
=
lvf_read_header
,
.
read_packet
=
lvf_read_packet
,
.
extensions
=
"lvf"
,
.
flags
=
AVFMT_GENERIC_INDEX
,
};
libavformat/version.h
View file @
a57d560d
...
...
@@ -30,7 +30,7 @@
#include "libavutil/avutil.h"
#define LIBAVFORMAT_VERSION_MAJOR 54
#define LIBAVFORMAT_VERSION_MINOR 3
3
#define LIBAVFORMAT_VERSION_MINOR 3
4
#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment