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Commit Graph

23 Commits

Author SHA1 Message Date
Leo Izen
458cc7e314 avcodec/libjxl: add Jpeg XL decoding via libjxl
This commit adds decoding support to libavcodec
for Jpeg XL images via the external library libjxl.
2022-04-23 19:51:46 +02:00
Marton Balint
ee50cc18b3 avcodec/vbnenc: add VBN encoder
Signed-off-by: Marton Balint <cus@passwd.hu>
2022-04-10 20:12:23 +02:00
Jack Bruienne
70fef2371c avformat: add DFPWM raw format
This patch builds on my previous DFPWM codec patch, adding a raw
audio format to be able to read/write the raw files that are most commonly
used (as no other container format supports it yet).

The muxers are mostly copied from the PCM demuxer and the raw muxers, as
DFPWM is typically stored as raw data.

Please see the previous patch for more information on DFPWM.

Signed-off-by: Jack Bruienne <jackbruienne@gmail.com>
2022-03-10 14:11:12 +01:00
Jack Bruienne
39a33038ce avcodec: add DFPWM1a codec
From the wiki page (https://wiki.vexatos.com/dfpwm):
> DFPWM (Dynamic Filter Pulse Width Modulation) is an audio codec
> created by Ben “GreaseMonkey” Russell in 2012, originally to be used
> as a voice codec for asiekierka's pixmess, a C remake of 64pixels.
> It is a 1-bit-per-sample codec which uses a dynamic-strength one-pole
> low-pass filter as a predictor. Due to the fact that a raw DPFWM decoding
> creates a high-pitched whine, it is often followed by some post-processing
> filters to make the stream more listenable.

It has recently gained popularity through the ComputerCraft mod for
Minecraft, which added support for audio through this codec, as well as
the Computronics expansion which preceeded the official support. These
both implement the slightly adjusted 1a version of the codec, which is
the version I have chosen for this patch.

This patch adds a new codec (with encoding and decoding) for DFPWM1a.
The codec sources are pretty simple: they use the reference codec with
a basic wrapper to connect it to the FFmpeg AVCodec system.

To clarify, the codec does not have a specific sample rate - it is
provided by the container (or user), which is typically 48000, but has
also been known to be 32768. The codec does not specify channel info
either, and it's pretty much always used with one mono channel.
However, since it appears that libavcodec expects both sample rate and
channel count to be handled by either the codec or container, I have
made the decision to allow multiple channels interleaved, which as far
as I know has never been used, but it works fine here nevertheless. The
accompanying raw format has a channels option to set this. (I expect
most users of this will not use multiple channels, but it remains an
option just in case.)

This patch will be highly useful to ComputerCraft developers who are
working with audio, as it is the standard format for audio, and there
are few user-friendly encoders out there, and even fewer decoders. It
will streamline the process for importing and listening to audio,
replacing the need to write code or use tools that require very
specific input formats.

You may use the CraftOS-PC program (https://www.craftos-pc.cc) to test
out DFPWM playback. To use it, run the program and type this command:
"attach left speaker" Then run "speaker play <file.dfpwm>" for each file.
The app runs in a sandbox, so files have to be transferred in first;
the easiest way to do this is to simply drag the file on the window.
(Or copy files to the folder at https://www.craftos-pc.cc/docs/saves.)

Sample DFPWM files can be generated with an online tool at
https://music.madefor.cc. This is the current best way to encode DFPWM
files. Simply drag an audio file onto the page, and it will encode it,
giving a download link on the page.

I've made sure to update all of the docs as per Developer§7, and I've
tested it as per section 8. Test files encoded to DFPWM play correctly
in ComputerCraft, and other files that work in CC are correctly decoded.
I have also verified that corrupt files do not crash the decoder - this
should theoretically not be an issue as the result size is constant with
respect to the input size.

Signed-off-by: Jack Bruienne <jackbruienne@gmail.com>
2022-03-10 14:05:25 +01:00
Paul B Mahol
148ada5577 avcodec: add native Speex decoder 2021-10-10 17:44:41 +02:00
Peter Ross
60a9d3778f avcodec: GEM Raster image decoder
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Peter Ross <pross@xvid.org>
2021-10-08 20:37:36 +11:00
James Almer
8a6beccf0d avformat: add an AV1 Low overhead bitstream format muxer
Suggested-by: BBB
Signed-off-by: James Almer <jamrial@gmail.com>
2021-09-01 19:55:30 -03:00
Paul B Mahol
ed47a4a842 avcodec: add SMC encoder 2021-08-18 08:55:56 +02:00
Jun Zhao
7bd7377ddb lavc:libsvtav1: Update SVT-AV1 new repo
SVT-AV1 moved the repo from github to gitlab.

Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
2021-07-10 15:46:22 +08:00
Cameron Cawley
5c7313c740
avcodec: Implement Acorn Replay IMA ADPCM decoder
Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
2021-05-09 17:01:27 +10:00
Zane van Iperen
a6d4ea285c
doc: update for adpcm_ima_ws encoder and wsaud muxer
Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
2021-04-27 00:26:10 +10:00
parazyd
51367267c8 avformat/gopher: Add support for Gopher over TLS
This commit adds a "gophers" handler to the gopher protocol. gophers
is a community-adopted protocol that acts the same way like normal
gopher with the added TLS encapsulation.

The gophers protocol is supported by gopher servers like geomydae(8),
and clients like curl(1), clic(1), and hurl(1).

This commit also adds compilation guards to both gopher and gophers,
since now there are two protocols in the file it makes sense to
have this addition.

Signed-off-by: parazyd <parazyd@dyne.org>
Signed-off-by: Marton Balint <cus@passwd.hu>
2021-03-11 23:47:19 +01:00
Jan Ekström
64af14555b avformat: add TTML muxer
Enables writing TTML documents or encoded TTML paragraphs as such
documents.

Additionally, a test for the combined TTML encoder and muxer has
been added to validate that the components still work.

Signed-off-by: Jan Ekström <jan.ekstrom@24i.com>
2021-03-05 19:45:00 +02:00
Jan Ekström
18713d22a2 avcodec: add TTML encoder
Enables encoding of other subtitle formats into TTML paragraphs.

Signed-off-by: Jan Ekström <jan.ekstrom@24i.com>
2021-03-05 19:45:00 +02:00
Paul B Mahol
a52b9464e4 doc/general_contents: add few more entries
Also extend description of some entries.
2021-02-07 00:01:12 +01:00
Peter Ross
2aab42bc40 avformat/mspdec: Microsoft Paint (MSP) demuxer
Signed-off-by: Peter Ross <pross@xvid.org>
2020-12-06 20:03:47 +11:00
Jean-Baptiste Kempf
052a5993ad avcodec: add SpeedHQ encoder 2020-11-24 09:38:35 +01:00
Zane van Iperen
555f5c1fc5
avcodec: add adpcm_ima_amv encoder
Fixes ticket #747.

Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
2020-11-09 14:58:38 +10:00
Zane van Iperen
67d4ab50ec
doc: mark "ADPCM IMA High Voltage Software ALP" as encodable
Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
2020-11-03 12:25:08 +10:00
hwren
682990a849 doc/general_contents.texi: add uavs3d section
Signed-off-by: hwren <hwrenx@126.com>
2020-10-21 09:33:07 +08:00
Lynne
45070eec4c
libwavpackenc: remove libwavpackenc wrapper
The manual states "there is virtually no reason to use that encoder.".

It supports less sample formats than the native encoder, is less efficient
than the native encoder and is also slower and pretty much remains untested.
libwavpack also isn't being fuzzed, which given that we plug the parameters
without any sanitizing them looks concerning.
2020-10-02 17:43:15 +02:00
Zixing Liu
d58f8fd8e6 avformat: add mca demuxer
Signed-off-by: liushuyu <liushuyu@aosc.io>
2020-09-10 17:38:08 +02:00
Nicolas George
6accb7718a doc/general: move contents into a separate file.
It will allow to include it.
2020-09-08 14:29:19 +02:00