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Linshizhi
ffmpeg.wasm-core
Commits
4f248a34
Commit
4f248a34
authored
Mar 15, 2020
by
Paul B Mahol
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avformat: add derf demuxer
parent
c6bbdba9
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4 changed files
with
82 additions
and
0 deletions
+82
-0
Changelog
Changelog
+1
-0
Makefile
libavformat/Makefile
+1
-0
allformats.c
libavformat/allformats.c
+1
-0
derf.c
libavformat/derf.c
+79
-0
No files found.
Changelog
View file @
4f248a34
...
@@ -51,6 +51,7 @@ version <next>:
...
@@ -51,6 +51,7 @@ version <next>:
- ADPCM IMA MTF decoder
- ADPCM IMA MTF decoder
- FWSE demuxer
- FWSE demuxer
- DERF DPCM decoder
- DERF DPCM decoder
- DERF demuxer
version 4.2:
version 4.2:
...
...
libavformat/Makefile
View file @
4f248a34
...
@@ -151,6 +151,7 @@ OBJS-$(CONFIG_DASH_DEMUXER) += dash.o dashdec.o
...
@@ -151,6 +151,7 @@ OBJS-$(CONFIG_DASH_DEMUXER) += dash.o dashdec.o
OBJS-$(CONFIG_DAUD_DEMUXER)
+=
dauddec.o
OBJS-$(CONFIG_DAUD_DEMUXER)
+=
dauddec.o
OBJS-$(CONFIG_DAUD_MUXER)
+=
daudenc.o
OBJS-$(CONFIG_DAUD_MUXER)
+=
daudenc.o
OBJS-$(CONFIG_DCSTR_DEMUXER)
+=
dcstr.o
OBJS-$(CONFIG_DCSTR_DEMUXER)
+=
dcstr.o
OBJS-$(CONFIG_DERF_DEMUXER)
+=
derf.o
pcm.o
OBJS-$(CONFIG_DFA_DEMUXER)
+=
dfa.o
OBJS-$(CONFIG_DFA_DEMUXER)
+=
dfa.o
OBJS-$(CONFIG_DHAV_DEMUXER)
+=
dhav.o
OBJS-$(CONFIG_DHAV_DEMUXER)
+=
dhav.o
OBJS-$(CONFIG_DIRAC_DEMUXER)
+=
diracdec.o
rawdec.o
OBJS-$(CONFIG_DIRAC_DEMUXER)
+=
diracdec.o
rawdec.o
...
...
libavformat/allformats.c
View file @
4f248a34
...
@@ -113,6 +113,7 @@ extern AVOutputFormat ff_data_muxer;
...
@@ -113,6 +113,7 @@ extern AVOutputFormat ff_data_muxer;
extern
AVInputFormat
ff_daud_demuxer
;
extern
AVInputFormat
ff_daud_demuxer
;
extern
AVOutputFormat
ff_daud_muxer
;
extern
AVOutputFormat
ff_daud_muxer
;
extern
AVInputFormat
ff_dcstr_demuxer
;
extern
AVInputFormat
ff_dcstr_demuxer
;
extern
AVInputFormat
ff_derf_demuxer
;
extern
AVInputFormat
ff_dfa_demuxer
;
extern
AVInputFormat
ff_dfa_demuxer
;
extern
AVInputFormat
ff_dhav_demuxer
;
extern
AVInputFormat
ff_dhav_demuxer
;
extern
AVInputFormat
ff_dirac_demuxer
;
extern
AVInputFormat
ff_dirac_demuxer
;
...
...
libavformat/derf.c
0 → 100644
View file @
4f248a34
/*
* DERF demuxer
* Copyright (c) 2020 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 "internal.h"
#include "pcm.h"
static
int
derf_probe
(
const
AVProbeData
*
p
)
{
if
(
AV_RL32
(
p
->
buf
)
!=
MKTAG
(
'D'
,
'E'
,
'R'
,
'F'
))
return
0
;
if
(
AV_RL32
(
p
->
buf
+
4
)
!=
1
&&
AV_RL32
(
p
->
buf
+
4
)
!=
2
)
return
0
;
return
AVPROBE_SCORE_MAX
/
3
*
2
;
}
static
int
derf_read_header
(
AVFormatContext
*
s
)
{
unsigned
data_size
;
AVIOContext
*
pb
=
s
->
pb
;
AVCodecParameters
*
par
;
AVStream
*
st
;
avio_skip
(
pb
,
4
);
st
=
avformat_new_stream
(
s
,
NULL
);
if
(
!
st
)
return
AVERROR
(
ENOMEM
);
par
=
st
->
codecpar
;
par
->
codec_type
=
AVMEDIA_TYPE_AUDIO
;
par
->
codec_id
=
AV_CODEC_ID_DERF_DPCM
;
par
->
format
=
AV_SAMPLE_FMT_S16
;
par
->
channels
=
avio_rl32
(
pb
);
if
(
par
->
channels
!=
1
&&
par
->
channels
!=
2
)
return
AVERROR_INVALIDDATA
;
if
(
par
->
channels
==
1
)
par
->
channel_layout
=
AV_CH_LAYOUT_MONO
;
else
if
(
par
->
channels
==
2
)
par
->
channel_layout
=
AV_CH_LAYOUT_STEREO
;
data_size
=
avio_rl32
(
pb
);
st
->
duration
=
data_size
/
par
->
channels
;
par
->
sample_rate
=
22050
;
par
->
block_align
=
1
;
avpriv_set_pts_info
(
st
,
64
,
1
,
par
->
sample_rate
);
return
0
;
}
AVInputFormat
ff_derf_demuxer
=
{
.
name
=
"derf"
,
.
long_name
=
NULL_IF_CONFIG_SMALL
(
"Xilam DERF"
),
.
read_probe
=
derf_probe
,
.
read_header
=
derf_read_header
,
.
read_packet
=
ff_pcm_read_packet
,
.
read_seek
=
ff_pcm_read_seek
,
.
extensions
=
"adp"
,
};
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