From: Paul B Mahol <onemda@gmail.com>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCH 5/5] avformat: add sdr support
Date: Sun, 18 Jun 2023 13:46:05 +0200
Message-ID: <CAPYw7P7qauqimMy7Xv-AdnUWhvuVXizz-FDhu6NDjZW4ALL4sw@mail.gmail.com> (raw)
In-Reply-To: <20230617183723.GP1391451@pb2>
On Sat, Jun 17, 2023 at 8:37 PM Michael Niedermayer <michael@niedermayer.cc>
wrote:
> On Sat, Jun 17, 2023 at 08:08:11PM +0200, Paul B Mahol wrote:
> [...]
>
> > Which library handles compressed stuff?
>
> For digital stuff like DAB/DVB/...
>
> sdrdemux in libavformat will demodulate, do error correction then return
> AVPacket
> with H.264 / Mpeg2 video or AAC or wahetever
> That then will get passed to libavcodec, same as with any other demuxer.
>
> This code is not written yet. There is just analog AM demodulation. I
> posted
> this patch as soon as the first usecase worked
>
> usecase was "listen to random AM radio stations in ffplay" :)
> and it can also grab all AM stations in a 10Mhz window and demodulate all
> (that 10mhz is what my hw and usb bandwidth can do max)
>
> I intend to add FM demodulation, because it seems a fun thing to try to do.
>
> someone will need to add DAB/DVB support, I would be happy if someone else
> comes forth to do that. If noone does ill think about if i want to do it
> or not once FM is done and once this is in git.
>
> The initial reaction from some was a bit spicy, so i need to think
> how much fun this is in FFmpeg.
> But one thing i can say for sure, is, if i cannot use this in ffplay
> then it makes no sense for me to put more time into it
>
> We could implement seeking to next/previous stations differently but
> it seems a bit like creating extra work for everyone.
> I mean a new API in sdrdemux then ffplay needs to support that and then
> other players would need to support it and so on. While really the
> seeking on a realtime input has no other use
>
>
Sorry, but you are making and adding more and more unacceptable hacks.
> thx
>
> [...]
>
> --
> Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
>
> Democracy is the form of government in which you can choose your dictator
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next prev parent reply other threads:[~2023-06-18 11:46 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-16 22:20 [FFmpeg-devel] [PATCH 0/5] " Michael Niedermayer
2023-06-16 22:20 ` [FFmpeg-devel] [PATCH 1/5] avutil/tx_template: extend to 2M Michael Niedermayer
2023-07-22 15:40 ` Michael Niedermayer
2023-07-23 17:48 ` Tomas Härdin
2023-07-24 8:59 ` Michael Niedermayer
2023-07-24 11:06 ` Leo Izen
2023-07-24 12:39 ` Thilo Borgmann
2023-07-24 13:04 ` Rémi Denis-Courmont
2023-07-24 15:45 ` Thilo Borgmann
2023-07-24 8:35 ` Andreas Rheinhardt
2023-07-24 8:57 ` Paul B Mahol
2023-07-24 18:46 ` Tomas Härdin
2023-07-25 6:14 ` Paul B Mahol
2023-06-16 22:20 ` [FFmpeg-devel] [PATCH 2/5] avcodec/pcm: allow Changing parameters Michael Niedermayer
2023-06-16 22:20 ` [FFmpeg-devel] [PATCH 3/5] avcodec/kbdwin: Support arbitrary sized windows Michael Niedermayer
2023-06-16 22:20 ` [FFmpeg-devel] [PATCH 4/5] avcodec: Rename ff_kbd_window_init() as it will be needed from outside libavcodec Michael Niedermayer
2023-06-16 22:20 ` [FFmpeg-devel] [PATCH 5/5] avformat: add sdr support Michael Niedermayer
2023-06-17 6:16 ` Paul B Mahol
2023-06-17 8:46 ` Michael Niedermayer
2023-06-17 11:08 ` Paul B Mahol
2023-06-17 12:48 ` Michael Niedermayer
2023-06-17 18:08 ` Paul B Mahol
2023-06-17 18:37 ` Michael Niedermayer
2023-06-17 18:43 ` Michael Niedermayer
2023-06-18 11:46 ` Paul B Mahol [this message]
2023-06-18 12:36 ` Kieran Kunhya
2023-06-24 10:22 ` Tomas Härdin
2023-06-18 12:59 ` Lynne
2023-06-18 13:30 ` Hendrik Leppkes
2023-06-18 13:45 ` Lynne
2023-06-18 13:48 ` Michael Niedermayer
2023-06-17 13:30 ` Leo Izen
2023-06-17 18:10 ` Michael Niedermayer
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