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[FFmpeg-devel,v23,16/21] avfilter/textmod: Add textmod, censor and show_speaker filters

Message ID DM8P223MB03651B126BFB50522D556769BA719@DM8P223MB0365.NAMP223.PROD.OUTLOOK.COM
State New
Headers show
Series Subtitle Filtering | expand

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Context Check Description
andriy/make_x86 success Make finished
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andriy/make_ppc success Make finished
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Commit Message

Soft Works Dec. 10, 2021, 9:37 p.m. UTC
- textmod {S -> S)
  Modify subtitle text in a number of ways

- censor {S -> S)
  Censor subtitles using a word list

- show_speaker {S -> S)
  Prepend speaker names from ASS subtitles to the visible text lines

Signed-off-by: softworkz <softworkz@hotmail.com>
---
 doc/filters.texi         | 206 ++++++++++++
 libavfilter/Makefile     |   5 +
 libavfilter/allfilters.c |   3 +
 libavfilter/sf_textmod.c | 697 +++++++++++++++++++++++++++++++++++++++
 4 files changed, 911 insertions(+)
 create mode 100644 libavfilter/sf_textmod.c

Comments

Michael Niedermayer Dec. 11, 2021, 3:33 p.m. UTC | #1
On Fri, Dec 10, 2021 at 09:37:53PM +0000, Soft Works wrote:
> - textmod {S -> S)
>   Modify subtitle text in a number of ways
> 
> - censor {S -> S)
>   Censor subtitles using a word list
> 
> - show_speaker {S -> S)
>   Prepend speaker names from ASS subtitles to the visible text lines
> 
> Signed-off-by: softworkz <softworkz@hotmail.com>
> ---
>  doc/filters.texi         | 206 ++++++++++++
>  libavfilter/Makefile     |   5 +
>  libavfilter/allfilters.c |   3 +
>  libavfilter/sf_textmod.c | 697 +++++++++++++++++++++++++++++++++++++++
>  4 files changed, 911 insertions(+)
>  create mode 100644 libavfilter/sf_textmod.c

doesnt apply (using git am with the email, the other patches
with lower numbers all applied with no such issues)

Applying: avfilter/textmod: Add textmod, censor and show_speaker filters
.git/rebase-apply/patch:269: trailing whitespace.
/*
.git/rebase-apply/patch:270: trailing whitespace.
 * Copyright (c) 2021 softworkz
.git/rebase-apply/patch:271: trailing whitespace.
 *
.git/rebase-apply/patch:272: trailing whitespace.
 * This file is part of FFmpeg.
.git/rebase-apply/patch:273: trailing whitespace.
 *
warning: squelched 692 whitespace errors
warning: 697 lines add whitespace errors.
Using index info to reconstruct a base tree...
M	libavfilter/Makefile
M	libavfilter/allfilters.c
.git/rebase-apply/patch:269: trailing whitespace.
/*
.git/rebase-apply/patch:270: trailing whitespace.
 * Copyright (c) 2021 softworkz
.git/rebase-apply/patch:271: trailing whitespace.
 *
.git/rebase-apply/patch:272: trailing whitespace.
 * This file is part of FFmpeg.
.git/rebase-apply/patch:273: trailing whitespace.
 *
error: patch failed: doc/filters.texi:25644
error: doc/filters.texi: patch does not apply
error: patch failed: libavfilter/Makefile:553
error: libavfilter/Makefile: patch does not apply
error: patch failed: libavfilter/allfilters.c:544
error: libavfilter/allfilters.c: patch does not apply
error: Did you hand edit your patch?
It does not apply to blobs recorded in its index.
Patch failed at 0001 avfilter/textmod: Add textmod, censor and show_speaker filters
Use 'git am --show-current-patch' to see the failed patch
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

[...]
Soft Works Dec. 11, 2021, 4:24 p.m. UTC | #2
> -----Original Message-----
> From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of Michael
> Niedermayer
> Sent: Saturday, December 11, 2021 4:33 PM
> To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
> Subject: Re: [FFmpeg-devel] [PATCH v23 16/21] avfilter/textmod: Add textmod,
> censor and show_speaker filters
> 
> On Fri, Dec 10, 2021 at 09:37:53PM +0000, Soft Works wrote:
> > - textmod {S -> S)
> >   Modify subtitle text in a number of ways
> >
> > - censor {S -> S)
> >   Censor subtitles using a word list
> >
> > - show_speaker {S -> S)
> >   Prepend speaker names from ASS subtitles to the visible text lines
> >
> > Signed-off-by: softworkz <softworkz@hotmail.com>
> > ---
> >  doc/filters.texi         | 206 ++++++++++++
> >  libavfilter/Makefile     |   5 +
> >  libavfilter/allfilters.c |   3 +
> >  libavfilter/sf_textmod.c | 697 +++++++++++++++++++++++++++++++++++++++
> >  4 files changed, 911 insertions(+)
> >  create mode 100644 libavfilter/sf_textmod.c
> 
> doesnt apply (using git am with the email, the other patches
> with lower numbers all applied with no such issues)
> 
> Applying: avfilter/textmod: Add textmod, censor and show_speaker filters
> .git/rebase-apply/patch:269: trailing whitespace.
> /*
> .git/rebase-apply/patch:270: trailing whitespace.
>  * Copyright (c) 2021 softworkz
> .git/rebase-apply/patch:271: trailing whitespace.
>  *
> .git/rebase-apply/patch:272: trailing whitespace.
>  * This file is part of FFmpeg.
> .git/rebase-apply/patch:273: trailing whitespace.
>  *
> warning: squelched 692 whitespace errors
> warning: 697 lines add whitespace errors.
> Using index info to reconstruct a base tree...
> M	libavfilter/Makefile
> M	libavfilter/allfilters.c
> .git/rebase-apply/patch:269: trailing whitespace.
> /*
> .git/rebase-apply/patch:270: trailing whitespace.
>  * Copyright (c) 2021 softworkz
> .git/rebase-apply/patch:271: trailing whitespace.
>  *
> .git/rebase-apply/patch:272: trailing whitespace.
>  * This file is part of FFmpeg.
> .git/rebase-apply/patch:273: trailing whitespace.
>  *
> error: patch failed: doc/filters.texi:25644
> error: doc/filters.texi: patch does not apply
> error: patch failed: libavfilter/Makefile:553
> error: libavfilter/Makefile: patch does not apply
> error: patch failed: libavfilter/allfilters.c:544
> error: libavfilter/allfilters.c: patch does not apply
> error: Did you hand edit your patch?
> It does not apply to blobs recorded in its index.
> Patch failed at 0001 avfilter/textmod: Add textmod, censor and show_speaker
> filters
> Use 'git am --show-current-patch' to see the failed patch
> When you have resolved this problem, run "git am --continue".
> If you prefer to skip this patch, run "git am --skip" instead.
> To restore the original branch and stop patching, run "git am --abort".
> 
> [...]
> --


Hi Michael,

I have no idea what is going on here.

When I look at those lines in the file that was generated
by git format-patch, there isn't any trailing white space.
Same is true when I look at this e-mail as I have received
it from the ML, and when downloading the M-Box from patchwork,
it hasn't any trailing whitespace either.

There are lines with a single space between hunks,
but all files generated by git format-patch have that.
I have double-checked all involved source files and none of them 
has any trailing white space anymore.

Yesterday, Andreas had pointed out the whitespace messages 
would only be warnings, but then I wouldn't know what's 
causing this, as it doesn't seem to be a line ending issue
either. Patchwork could apply it, interestingly.

I have attached the full patchset as zip. Hopefully this will
apply at least.

Thanks,
softworkz



Application: Microsoft.Office.Interop.Outlook.ApplicationClass
Class: 43
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Parent: System.__ComObject
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Body: 

> -----Original Message-----
> From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of Michael
> Niedermayer
> Sent: Saturday, December 11, 2021 4:33 PM
> To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
> Subject: Re: [FFmpeg-devel] [PATCH v23 16/21] avfilter/textmod: Add textmod,
> censor and show_speaker filters
> 
> On Fri, Dec 10, 2021 at 09:37:53PM +0000, Soft Works wrote:
> > - textmod {S -> S)
> >   Modify subtitle text in a number of ways
> >
> > - censor {S -> S)
> >   Censor subtitles using a word list
> >
> > - show_speaker {S -> S)
> >   Prepend speaker names from ASS subtitles to the visible text lines
> >
> > Signed-off-by: softworkz <softworkz@hotmail.com>
> > ---
> >  doc/filters.texi         | 206 ++++++++++++
> >  libavfilter/Makefile     |   5 +
> >  libavfilter/allfilters.c |   3 +
> >  libavfilter/sf_textmod.c | 697 +++++++++++++++++++++++++++++++++++++++
> >  4 files changed, 911 insertions(+)
> >  create mode 100644 libavfilter/sf_textmod.c
> 
> doesnt apply (using git am with the email, the other patches
> with lower numbers all applied with no such issues)
> 
> Applying: avfilter/textmod: Add textmod, censor and show_speaker filters
> .git/rebase-apply/patch:269: trailing whitespace.
> /*
> .git/rebase-apply/patch:270: trailing whitespace.
>  * Copyright (c) 2021 softworkz
> .git/rebase-apply/patch:271: trailing whitespace.
>  *
> .git/rebase-apply/patch:272: trailing whitespace.
>  * This file is part of FFmpeg.
> .git/rebase-apply/patch:273: trailing whitespace.
>  *
> warning: squelched 692 whitespace errors
> warning: 697 lines add whitespace errors.
> Using index info to reconstruct a base tree...
> M	libavfilter/Makefile
> M	libavfilter/allfilters.c
> .git/rebase-apply/patch:269: trailing whitespace.
> /*
> .git/rebase-apply/patch:270: trailing whitespace.
>  * Copyright (c) 2021 softworkz
> .git/rebase-apply/patch:271: trailing whitespace.
>  *
> .git/rebase-apply/patch:272: trailing whitespace.
>  * This file is part of FFmpeg.
> .git/rebase-apply/patch:273: trailing whitespace.
>  *
> error: patch failed: doc/filters.texi:25644
> error: doc/filters.texi: patch does not apply
> error: patch failed: libavfilter/Makefile:553
> error: libavfilter/Makefile: patch does not apply
> error: patch failed: libavfilter/allfilters.c:544
> error: libavfilter/allfilters.c: patch does not apply
> error: Did you hand edit your patch?
> It does not apply to blobs recorded in its index.
> Patch failed at 0001 avfilter/textmod: Add textmod, censor and show_speaker
> filters
> Use 'git am --show-current-patch' to see the failed patch
> When you have resolved this problem, run "git am --continue".
> If you prefer to skip this patch, run "git am --skip" instead.
> To restore the original branch and stop patching, run "git am --abort".
> 
> [...]
> --


Hi Michael,

I have no idea what is going on here.

When I look at those lines in the file that was generated
by git format-patch, there isn't any trailing white space.
Same is true when I look at this e-mail as I have received
it from the ML, and when downloading the M-Box from patchwork,
it hasn't any trailing whitespace either.

There are lines with a single space between hunks,
but all files generated by git format-patch have that.
I have double-checked all involved source files and none of them 
has any trailing white space anymore.

Yesterday, Andreas had pointed out the whitespace messages 
would only be warnings, but then I wouldn't know what's 
causing this, as it doesn't seem to be a line ending issue
either. Patchwork could apply it, interestingly.

I have attached the full patchset as zip. Hopefully this will
apply at least.

Thanks,
softworkz




Categories: 
Companies: 
ConversationIndex: 0101D7EE0E3097BC542CE25E8F449EA54DC82CBAE9E7AC2D6CB800800008FC40
ConversationTopic: [PATCH 1/1] Test ref file change
CreationTime: 11 Dec 2021 17:05:25
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<P><FONT SIZE=2>&gt; -----Original Message-----<BR>
&gt; From: ffmpeg-devel &lt;ffmpeg-devel-bounces@ffmpeg.org&gt; On Behalf Of Michael<BR>
&gt; Niedermayer<BR>
&gt; Sent: Saturday, December 11, 2021 4:33 PM<BR>
&gt; To: FFmpeg development discussions and patches &lt;ffmpeg-devel@ffmpeg.org&gt;<BR>
&gt; Subject: Re: [FFmpeg-devel] [PATCH v23 16/21] avfilter/textmod: Add textmod,<BR>
&gt; censor and show_speaker filters<BR>
&gt;<BR>
&gt; On Fri, Dec 10, 2021 at 09:37:53PM +0000, Soft Works wrote:<BR>
&gt; &gt; - textmod {S -&gt; S)<BR>
&gt; &gt;&nbsp;&nbsp; Modify subtitle text in a number of ways<BR>
&gt; &gt;<BR>
&gt; &gt; - censor {S -&gt; S)<BR>
&gt; &gt;&nbsp;&nbsp; Censor subtitles using a word list<BR>
&gt; &gt;<BR>
&gt; &gt; - show_speaker {S -&gt; S)<BR>
&gt; &gt;&nbsp;&nbsp; Prepend speaker names from ASS subtitles to the visible text lines<BR>
&gt; &gt;<BR>
&gt; &gt; Signed-off-by: softworkz &lt;softworkz@hotmail.com&gt;<BR>
&gt; &gt; ---<BR>
&gt; &gt;&nbsp; doc/filters.texi&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; | 206 ++++++++++++<BR>
&gt; &gt;&nbsp; libavfilter/Makefile&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp; 5 +<BR>
&gt; &gt;&nbsp; libavfilter/allfilters.c |&nbsp;&nbsp; 3 +<BR>
&gt; &gt;&nbsp; libavfilter/sf_textmod.c | 697 +++++++++++++++++++++++++++++++++++++++<BR>
&gt; &gt;&nbsp; 4 files changed, 911 insertions(+)<BR>
&gt; &gt;&nbsp; create mode 100644 libavfilter/sf_textmod.c<BR>
&gt;<BR>
&gt; doesnt apply (using git am with the email, the other patches<BR>
&gt; with lower numbers all applied with no such issues)<BR>
&gt;<BR>
&gt; Applying: avfilter/textmod: Add textmod, censor and show_speaker filters<BR>
&gt; .git/rebase-apply/patch:269: trailing whitespace.<BR>
&gt; /*<BR>
&gt; .git/rebase-apply/patch:270: trailing whitespace.<BR>
&gt;&nbsp; * Copyright (c) 2021 softworkz<BR>
&gt; .git/rebase-apply/patch:271: trailing whitespace.<BR>
&gt;&nbsp; *<BR>
&gt; .git/rebase-apply/patch:272: trailing whitespace.<BR>
&gt;&nbsp; * This file is part of FFmpeg.<BR>
&gt; .git/rebase-apply/patch:273: trailing whitespace.<BR>
&gt;&nbsp; *<BR>
&gt; warning: squelched 692 whitespace errors<BR>
&gt; warning: 697 lines add whitespace errors.<BR>
&gt; Using index info to reconstruct a base tree...<BR>
&gt; M&nbsp;&nbsp;&nbsp;&nbsp; libavfilter/Makefile<BR>
&gt; M&nbsp;&nbsp;&nbsp;&nbsp; libavfilter/allfilters.c<BR>
&gt; .git/rebase-apply/patch:269: trailing whitespace.<BR>
&gt; /*<BR>
&gt; .git/rebase-apply/patch:270: trailing whitespace.<BR>
&gt;&nbsp; * Copyright (c) 2021 softworkz<BR>
&gt; .git/rebase-apply/patch:271: trailing whitespace.<BR>
&gt;&nbsp; *<BR>
&gt; .git/rebase-apply/patch:272: trailing whitespace.<BR>
&gt;&nbsp; * This file is part of FFmpeg.<BR>
&gt; .git/rebase-apply/patch:273: trailing whitespace.<BR>
&gt;&nbsp; *<BR>
&gt; error: patch failed: doc/filters.texi:25644<BR>
&gt; error: doc/filters.texi: patch does not apply<BR>
&gt; error: patch failed: libavfilter/Makefile:553<BR>
&gt; error: libavfilter/Makefile: patch does not apply<BR>
&gt; error: patch failed: libavfilter/allfilters.c:544<BR>
&gt; error: libavfilter/allfilters.c: patch does not apply<BR>
&gt; error: Did you hand edit your patch?<BR>
&gt; It does not apply to blobs recorded in its index.<BR>
&gt; Patch failed at 0001 avfilter/textmod: Add textmod, censor and show_speaker<BR>
&gt; filters<BR>
&gt; Use 'git am --show-current-patch' to see the failed patch<BR>
&gt; When you have resolved this problem, run &quot;git am --continue&quot;.<BR>
&gt; If you prefer to skip this patch, run &quot;git am --skip&quot; instead.<BR>
&gt; To restore the original branch and stop patching, run &quot;git am --abort&quot;.<BR>
&gt;<BR>
&gt; [...]<BR>
&gt; --<BR>
<BR>
<BR>
Hi Michael,<BR>
<BR>
I have no idea what is going on here.<BR>
<BR>
When I look at those lines in the file that was generated<BR>
by git format-patch, there isn't any trailing white space.<BR>
Same is true when I look at this e-mail as I have received<BR>
it from the ML, and when downloading the M-Box from patchwork,<BR>
it hasn't any trailing whitespace either.<BR>
<BR>
There are lines with a single space between hunks,<BR>
but all files generated by git format-patch have that.<BR>
I have double-checked all involved source files and none of them<BR>
has any trailing white space anymore.<BR>
<BR>
Yesterday, Andreas had pointed out the whitespace messages<BR>
would only be warnings, but then I wouldn't know what's<BR>
causing this, as it doesn't seem to be a line ending issue<BR>
either. Patchwork could apply it, interestingly.<BR>
<BR>
I have attached the full patchset as zip. Hopefully this will<BR>
apply at least.<BR>
<BR>
Thanks,<BR>
softworkz<BR>
<BR>
<BR>
<BR>
<BR>
</FONT>
</P>

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TaskSubject: RE: [FFmpeg-devel] [PATCH v23 16/21] avfilter/textmod: Add textmod, censor and show_speaker filters
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Michael Niedermayer Dec. 11, 2021, 5:02 p.m. UTC | #3
On Sat, Dec 11, 2021 at 04:24:14PM +0000, Soft Works wrote:
> 
> 
> > -----Original Message-----
> > From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of Michael
> > Niedermayer
> > Sent: Saturday, December 11, 2021 4:33 PM
> > To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
> > Subject: Re: [FFmpeg-devel] [PATCH v23 16/21] avfilter/textmod: Add textmod,
> > censor and show_speaker filters
> > 
> > On Fri, Dec 10, 2021 at 09:37:53PM +0000, Soft Works wrote:
> > > - textmod {S -> S)
> > >   Modify subtitle text in a number of ways
> > >
> > > - censor {S -> S)
> > >   Censor subtitles using a word list
> > >
> > > - show_speaker {S -> S)
> > >   Prepend speaker names from ASS subtitles to the visible text lines
> > >
> > > Signed-off-by: softworkz <softworkz@hotmail.com>
> > > ---
> > >  doc/filters.texi         | 206 ++++++++++++
> > >  libavfilter/Makefile     |   5 +
> > >  libavfilter/allfilters.c |   3 +
> > >  libavfilter/sf_textmod.c | 697 +++++++++++++++++++++++++++++++++++++++
> > >  4 files changed, 911 insertions(+)
> > >  create mode 100644 libavfilter/sf_textmod.c
> > 
> > doesnt apply (using git am with the email, the other patches
> > with lower numbers all applied with no such issues)
> > 
> > Applying: avfilter/textmod: Add textmod, censor and show_speaker filters
> > .git/rebase-apply/patch:269: trailing whitespace.
> > /*
> > .git/rebase-apply/patch:270: trailing whitespace.
> >  * Copyright (c) 2021 softworkz
> > .git/rebase-apply/patch:271: trailing whitespace.
> >  *
> > .git/rebase-apply/patch:272: trailing whitespace.
> >  * This file is part of FFmpeg.
> > .git/rebase-apply/patch:273: trailing whitespace.
> >  *
> > warning: squelched 692 whitespace errors
> > warning: 697 lines add whitespace errors.
> > Using index info to reconstruct a base tree...
> > M	libavfilter/Makefile
> > M	libavfilter/allfilters.c
> > .git/rebase-apply/patch:269: trailing whitespace.
> > /*
> > .git/rebase-apply/patch:270: trailing whitespace.
> >  * Copyright (c) 2021 softworkz
> > .git/rebase-apply/patch:271: trailing whitespace.
> >  *
> > .git/rebase-apply/patch:272: trailing whitespace.
> >  * This file is part of FFmpeg.
> > .git/rebase-apply/patch:273: trailing whitespace.
> >  *
> > error: patch failed: doc/filters.texi:25644
> > error: doc/filters.texi: patch does not apply
> > error: patch failed: libavfilter/Makefile:553
> > error: libavfilter/Makefile: patch does not apply
> > error: patch failed: libavfilter/allfilters.c:544
> > error: libavfilter/allfilters.c: patch does not apply
> > error: Did you hand edit your patch?
> > It does not apply to blobs recorded in its index.
> > Patch failed at 0001 avfilter/textmod: Add textmod, censor and show_speaker
> > filters
> > Use 'git am --show-current-patch' to see the failed patch
> > When you have resolved this problem, run "git am --continue".
> > If you prefer to skip this patch, run "git am --skip" instead.
> > To restore the original branch and stop patching, run "git am --abort".
> > 
> > [...]
> > --
> 
> 
> Hi Michael,
> 
> I have no idea what is going on here.
> 
> When I look at those lines in the file that was generated
> by git format-patch, there isn't any trailing white space.
> Same is true when I look at this e-mail as I have received
> it from the ML, and when downloading the M-Box from patchwork,
> it hasn't any trailing whitespace either.
> 
> There are lines with a single space between hunks,
> but all files generated by git format-patch have that.
> I have double-checked all involved source files and none of them 
> has any trailing white space anymore.
> 
> Yesterday, Andreas had pointed out the whitespace messages 
> would only be warnings, but then I wouldn't know what's 
> causing this, as it doesn't seem to be a line ending issue
> either. Patchwork could apply it, interestingly.

patchwork uses different code to apply patches we already determined this
last time.

heres what patch does:

patch -p1 --dry-run <.git/rebase-apply/patch
(Stripping trailing CRs from patch; use --binary to disable.)
checking file doc/filters.texi
(Stripping trailing CRs from patch; use --binary to disable.)
checking file libavfilter/Makefile
Hunk #1 succeeded at 554 (offset 1 line).
(Stripping trailing CRs from patch; use --binary to disable.)
checking file libavfilter/allfilters.c
Hunk #1 succeeded at 545 (offset 1 line).
(Stripping trailing CRs from patch; use --binary to disable.)
checking file libavfilter/sf_textmod.c

it applies it but it still complains about issues, OTOH git am
refuses this.
also using --binary patch also refuses this

patch -p1 --dry-run --binary <.git/rebase-apply/patch
checking file doc/filters.texi
Hunk #1 FAILED at 25644 (different line endings).
Hunk #2 FAILED at 25811 (different line endings).
2 out of 2 hunks FAILED
checking file libavfilter/Makefile
Hunk #1 FAILED at 553 (different line endings).
1 out of 1 hunk FAILED
checking file libavfilter/allfilters.c
Hunk #1 FAILED at 544 (different line endings).
1 out of 1 hunk FAILED
checking file libavfilter/sf_textmod.c

I dont want all of a sudden random files to change their cr/lf line endings
which this is smelling like it could result in


> 
> I have attached the full patchset as zip. Hopefully this will
> apply at least.

please provide a git repository, github or whatever, working with attached
zip files is not reasonable when it involves repeatedly sent patchsets

thx 

[...]
Soft Works Dec. 11, 2021, 5:10 p.m. UTC | #4
> -----Original Message-----
> From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of Michael
> Niedermayer
> Sent: Saturday, December 11, 2021 6:03 PM
> To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
> Subject: Re: [FFmpeg-devel] [PATCH v23 16/21] avfilter/textmod: Add textmod,
> censor and show_speaker filters
> 
> On Sat, Dec 11, 2021 at 04:24:14PM +0000, Soft Works wrote:
> >
> >
> > > -----Original Message-----
> > > From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of Michael
> > > Niedermayer
> > > Sent: Saturday, December 11, 2021 4:33 PM
> > > To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
> > > Subject: Re: [FFmpeg-devel] [PATCH v23 16/21] avfilter/textmod: Add
> textmod,
> > > censor and show_speaker filters
> > >
> > > On Fri, Dec 10, 2021 at 09:37:53PM +0000, Soft Works wrote:
> > > > - textmod {S -> S)
> > > >   Modify subtitle text in a number of ways
> > > >
> > > > - censor {S -> S)
> > > >   Censor subtitles using a word list
> > > >
> > > > - show_speaker {S -> S)
> > > >   Prepend speaker names from ASS subtitles to the visible text lines
> > > >
> > > > Signed-off-by: softworkz <softworkz@hotmail.com>
> > > > ---
> > > >  doc/filters.texi         | 206 ++++++++++++
> > > >  libavfilter/Makefile     |   5 +
> > > >  libavfilter/allfilters.c |   3 +
> > > >  libavfilter/sf_textmod.c | 697 +++++++++++++++++++++++++++++++++++++++
> > > >  4 files changed, 911 insertions(+)
> > > >  create mode 100644 libavfilter/sf_textmod.c
> > >
> > > doesnt apply (using git am with the email, the other patches
> > > with lower numbers all applied with no such issues)
> > >
> > > Applying: avfilter/textmod: Add textmod, censor and show_speaker filters
> > > .git/rebase-apply/patch:269: trailing whitespace.
> > > /*
> > > .git/rebase-apply/patch:270: trailing whitespace.
> > >  * Copyright (c) 2021 softworkz
> > > .git/rebase-apply/patch:271: trailing whitespace.
> > >  *
> > > .git/rebase-apply/patch:272: trailing whitespace.
> > >  * This file is part of FFmpeg.
> > > .git/rebase-apply/patch:273: trailing whitespace.
> > >  *
> > > warning: squelched 692 whitespace errors
> > > warning: 697 lines add whitespace errors.
> > > Using index info to reconstruct a base tree...
> > > M	libavfilter/Makefile
> > > M	libavfilter/allfilters.c
> > > .git/rebase-apply/patch:269: trailing whitespace.
> > > /*
> > > .git/rebase-apply/patch:270: trailing whitespace.
> > >  * Copyright (c) 2021 softworkz
> > > .git/rebase-apply/patch:271: trailing whitespace.
> > >  *
> > > .git/rebase-apply/patch:272: trailing whitespace.
> > >  * This file is part of FFmpeg.
> > > .git/rebase-apply/patch:273: trailing whitespace.
> > >  *
> > > error: patch failed: doc/filters.texi:25644
> > > error: doc/filters.texi: patch does not apply
> > > error: patch failed: libavfilter/Makefile:553
> > > error: libavfilter/Makefile: patch does not apply
> > > error: patch failed: libavfilter/allfilters.c:544
> > > error: libavfilter/allfilters.c: patch does not apply
> > > error: Did you hand edit your patch?
> > > It does not apply to blobs recorded in its index.
> > > Patch failed at 0001 avfilter/textmod: Add textmod, censor and
> show_speaker
> > > filters
> > > Use 'git am --show-current-patch' to see the failed patch
> > > When you have resolved this problem, run "git am --continue".
> > > If you prefer to skip this patch, run "git am --skip" instead.
> > > To restore the original branch and stop patching, run "git am --abort".
> > >
> > > [...]
> > > --
> >
> >
> > Hi Michael,
> >
> > I have no idea what is going on here.
> >
> > When I look at those lines in the file that was generated
> > by git format-patch, there isn't any trailing white space.
> > Same is true when I look at this e-mail as I have received
> > it from the ML, and when downloading the M-Box from patchwork,
> > it hasn't any trailing whitespace either.
> >
> > There are lines with a single space between hunks,
> > but all files generated by git format-patch have that.
> > I have double-checked all involved source files and none of them
> > has any trailing white space anymore.
> >
> > Yesterday, Andreas had pointed out the whitespace messages
> > would only be warnings, but then I wouldn't know what's
> > causing this, as it doesn't seem to be a line ending issue
> > either. Patchwork could apply it, interestingly.
> 
> patchwork uses different code to apply patches we already determined this
> last time.
> 
> heres what patch does:
> 
> patch -p1 --dry-run <.git/rebase-apply/patch
> (Stripping trailing CRs from patch; use --binary to disable.)
> checking file doc/filters.texi
> (Stripping trailing CRs from patch; use --binary to disable.)
> checking file libavfilter/Makefile
> Hunk #1 succeeded at 554 (offset 1 line).
> (Stripping trailing CRs from patch; use --binary to disable.)
> checking file libavfilter/allfilters.c
> Hunk #1 succeeded at 545 (offset 1 line).
> (Stripping trailing CRs from patch; use --binary to disable.)
> checking file libavfilter/sf_textmod.c
> 
> it applies it but it still complains about issues, OTOH git am
> refuses this.
> also using --binary patch also refuses this
> 
> patch -p1 --dry-run --binary <.git/rebase-apply/patch
> checking file doc/filters.texi
> Hunk #1 FAILED at 25644 (different line endings).
> Hunk #2 FAILED at 25811 (different line endings).
> 2 out of 2 hunks FAILED
> checking file libavfilter/Makefile
> Hunk #1 FAILED at 553 (different line endings).
> 1 out of 1 hunk FAILED
> checking file libavfilter/allfilters.c
> Hunk #1 FAILED at 544 (different line endings).
> 1 out of 1 hunk FAILED
> checking file libavfilter/sf_textmod.c
> 
> I dont want all of a sudden random files to change their cr/lf line endings
> which this is smelling like it could result in
> 
> 
> >
> > I have attached the full patchset as zip. Hopefully this will
> > apply at least.
> 
> please provide a git repository, github or whatever, working with attached
> zip files is not reasonable when it involves repeatedly sent patchsets

OMG - there's hardly anything I'd like to do more than that :-)  

Please hold on..

swApplication: Microsoft.Office.Interop.Outlook.ApplicationClass
Class: 43
Session: System.__ComObject
Parent: System.__ComObject
Attachments: System.__ComObject
BillingInformation: 
Body: 

> -----Original Message-----
> From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of Michael
> Niedermayer
> Sent: Saturday, December 11, 2021 6:03 PM
> To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
> Subject: Re: [FFmpeg-devel] [PATCH v23 16/21] avfilter/textmod: Add textmod,
> censor and show_speaker filters
> 
> On Sat, Dec 11, 2021 at 04:24:14PM +0000, Soft Works wrote:
> >
> >
> > > -----Original Message-----
> > > From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of Michael
> > > Niedermayer
> > > Sent: Saturday, December 11, 2021 4:33 PM
> > > To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
> > > Subject: Re: [FFmpeg-devel] [PATCH v23 16/21] avfilter/textmod: Add
> textmod,
> > > censor and show_speaker filters
> > >
> > > On Fri, Dec 10, 2021 at 09:37:53PM +0000, Soft Works wrote:
> > > > - textmod {S -> S)
> > > >   Modify subtitle text in a number of ways
> > > >
> > > > - censor {S -> S)
> > > >   Censor subtitles using a word list
> > > >
> > > > - show_speaker {S -> S)
> > > >   Prepend speaker names from ASS subtitles to the visible text lines
> > > >
> > > > Signed-off-by: softworkz <softworkz@hotmail.com>
> > > > ---
> > > >  doc/filters.texi         | 206 ++++++++++++
> > > >  libavfilter/Makefile     |   5 +
> > > >  libavfilter/allfilters.c |   3 +
> > > >  libavfilter/sf_textmod.c | 697 +++++++++++++++++++++++++++++++++++++++
> > > >  4 files changed, 911 insertions(+)
> > > >  create mode 100644 libavfilter/sf_textmod.c
> > >
> > > doesnt apply (using git am with the email, the other patches
> > > with lower numbers all applied with no such issues)
> > >
> > > Applying: avfilter/textmod: Add textmod, censor and show_speaker filters
> > > .git/rebase-apply/patch:269: trailing whitespace.
> > > /*
> > > .git/rebase-apply/patch:270: trailing whitespace.
> > >  * Copyright (c) 2021 softworkz
> > > .git/rebase-apply/patch:271: trailing whitespace.
> > >  *
> > > .git/rebase-apply/patch:272: trailing whitespace.
> > >  * This file is part of FFmpeg.
> > > .git/rebase-apply/patch:273: trailing whitespace.
> > >  *
> > > warning: squelched 692 whitespace errors
> > > warning: 697 lines add whitespace errors.
> > > Using index info to reconstruct a base tree...
> > > M	libavfilter/Makefile
> > > M	libavfilter/allfilters.c
> > > .git/rebase-apply/patch:269: trailing whitespace.
> > > /*
> > > .git/rebase-apply/patch:270: trailing whitespace.
> > >  * Copyright (c) 2021 softworkz
> > > .git/rebase-apply/patch:271: trailing whitespace.
> > >  *
> > > .git/rebase-apply/patch:272: trailing whitespace.
> > >  * This file is part of FFmpeg.
> > > .git/rebase-apply/patch:273: trailing whitespace.
> > >  *
> > > error: patch failed: doc/filters.texi:25644
> > > error: doc/filters.texi: patch does not apply
> > > error: patch failed: libavfilter/Makefile:553
> > > error: libavfilter/Makefile: patch does not apply
> > > error: patch failed: libavfilter/allfilters.c:544
> > > error: libavfilter/allfilters.c: patch does not apply
> > > error: Did you hand edit your patch?
> > > It does not apply to blobs recorded in its index.
> > > Patch failed at 0001 avfilter/textmod: Add textmod, censor and
> show_speaker
> > > filters
> > > Use 'git am --show-current-patch' to see the failed patch
> > > When you have resolved this problem, run "git am --continue".
> > > If you prefer to skip this patch, run "git am --skip" instead.
> > > To restore the original branch and stop patching, run "git am --abort".
> > >
> > > [...]
> > > --
> >
> >
> > Hi Michael,
> >
> > I have no idea what is going on here.
> >
> > When I look at those lines in the file that was generated
> > by git format-patch, there isn't any trailing white space.
> > Same is true when I look at this e-mail as I have received
> > it from the ML, and when downloading the M-Box from patchwork,
> > it hasn't any trailing whitespace either.
> >
> > There are lines with a single space between hunks,
> > but all files generated by git format-patch have that.
> > I have double-checked all involved source files and none of them
> > has any trailing white space anymore.
> >
> > Yesterday, Andreas had pointed out the whitespace messages
> > would only be warnings, but then I wouldn't know what's
> > causing this, as it doesn't seem to be a line ending issue
> > either. Patchwork could apply it, interestingly.
> 
> patchwork uses different code to apply patches we already determined this
> last time.
> 
> heres what patch does:
> 
> patch -p1 --dry-run <.git/rebase-apply/patch
> (Stripping trailing CRs from patch; use --binary to disable.)
> checking file doc/filters.texi
> (Stripping trailing CRs from patch; use --binary to disable.)
> checking file libavfilter/Makefile
> Hunk #1 succeeded at 554 (offset 1 line).
> (Stripping trailing CRs from patch; use --binary to disable.)
> checking file libavfilter/allfilters.c
> Hunk #1 succeeded at 545 (offset 1 line).
> (Stripping trailing CRs from patch; use --binary to disable.)
> checking file libavfilter/sf_textmod.c
> 
> it applies it but it still complains about issues, OTOH git am
> refuses this.
> also using --binary patch also refuses this
> 
> patch -p1 --dry-run --binary <.git/rebase-apply/patch
> checking file doc/filters.texi
> Hunk #1 FAILED at 25644 (different line endings).
> Hunk #2 FAILED at 25811 (different line endings).
> 2 out of 2 hunks FAILED
> checking file libavfilter/Makefile
> Hunk #1 FAILED at 553 (different line endings).
> 1 out of 1 hunk FAILED
> checking file libavfilter/allfilters.c
> Hunk #1 FAILED at 544 (different line endings).
> 1 out of 1 hunk FAILED
> checking file libavfilter/sf_textmod.c
> 
> I dont want all of a sudden random files to change their cr/lf line endings
> which this is smelling like it could result in
> 
> 
> >
> > I have attached the full patchset as zip. Hopefully this will
> > apply at least.
> 
> please provide a git repository, github or whatever, working with attached
> zip files is not reasonable when it involves repeatedly sent patchsets

OMG - there's hardly anything I'd like to do more than that :-)  

Please hold on..

sw
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<P><FONT SIZE=2>&gt; -----Original Message-----<BR>
&gt; From: ffmpeg-devel &lt;ffmpeg-devel-bounces@ffmpeg.org&gt; On Behalf Of Michael<BR>
&gt; Niedermayer<BR>
&gt; Sent: Saturday, December 11, 2021 6:03 PM<BR>
&gt; To: FFmpeg development discussions and patches &lt;ffmpeg-devel@ffmpeg.org&gt;<BR>
&gt; Subject: Re: [FFmpeg-devel] [PATCH v23 16/21] avfilter/textmod: Add textmod,<BR>
&gt; censor and show_speaker filters<BR>
&gt;<BR>
&gt; On Sat, Dec 11, 2021 at 04:24:14PM +0000, Soft Works wrote:<BR>
&gt; &gt;<BR>
&gt; &gt;<BR>
&gt; &gt; &gt; -----Original Message-----<BR>
&gt; &gt; &gt; From: ffmpeg-devel &lt;ffmpeg-devel-bounces@ffmpeg.org&gt; On Behalf Of Michael<BR>
&gt; &gt; &gt; Niedermayer<BR>
&gt; &gt; &gt; Sent: Saturday, December 11, 2021 4:33 PM<BR>
&gt; &gt; &gt; To: FFmpeg development discussions and patches &lt;ffmpeg-devel@ffmpeg.org&gt;<BR>
&gt; &gt; &gt; Subject: Re: [FFmpeg-devel] [PATCH v23 16/21] avfilter/textmod: Add<BR>
&gt; textmod,<BR>
&gt; &gt; &gt; censor and show_speaker filters<BR>
&gt; &gt; &gt;<BR>
&gt; &gt; &gt; On Fri, Dec 10, 2021 at 09:37:53PM +0000, Soft Works wrote:<BR>
&gt; &gt; &gt; &gt; - textmod {S -&gt; S)<BR>
&gt; &gt; &gt; &gt;&nbsp;&nbsp; Modify subtitle text in a number of ways<BR>
&gt; &gt; &gt; &gt;<BR>
&gt; &gt; &gt; &gt; - censor {S -&gt; S)<BR>
&gt; &gt; &gt; &gt;&nbsp;&nbsp; Censor subtitles using a word list<BR>
&gt; &gt; &gt; &gt;<BR>
&gt; &gt; &gt; &gt; - show_speaker {S -&gt; S)<BR>
&gt; &gt; &gt; &gt;&nbsp;&nbsp; Prepend speaker names from ASS subtitles to the visible text lines<BR>
&gt; &gt; &gt; &gt;<BR>
&gt; &gt; &gt; &gt; Signed-off-by: softworkz &lt;softworkz@hotmail.com&gt;<BR>
&gt; &gt; &gt; &gt; ---<BR>
&gt; &gt; &gt; &gt;&nbsp; doc/filters.texi&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; | 206 ++++++++++++<BR>
&gt; &gt; &gt; &gt;&nbsp; libavfilter/Makefile&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp; 5 +<BR>
&gt; &gt; &gt; &gt;&nbsp; libavfilter/allfilters.c |&nbsp;&nbsp; 3 +<BR>
&gt; &gt; &gt; &gt;&nbsp; libavfilter/sf_textmod.c | 697 +++++++++++++++++++++++++++++++++++++++<BR>
&gt; &gt; &gt; &gt;&nbsp; 4 files changed, 911 insertions(+)<BR>
&gt; &gt; &gt; &gt;&nbsp; create mode 100644 libavfilter/sf_textmod.c<BR>
&gt; &gt; &gt;<BR>
&gt; &gt; &gt; doesnt apply (using git am with the email, the other patches<BR>
&gt; &gt; &gt; with lower numbers all applied with no such issues)<BR>
&gt; &gt; &gt;<BR>
&gt; &gt; &gt; Applying: avfilter/textmod: Add textmod, censor and show_speaker filters<BR>
&gt; &gt; &gt; .git/rebase-apply/patch:269: trailing whitespace.<BR>
&gt; &gt; &gt; /*<BR>
&gt; &gt; &gt; .git/rebase-apply/patch:270: trailing whitespace.<BR>
&gt; &gt; &gt;&nbsp; * Copyright (c) 2021 softworkz<BR>
&gt; &gt; &gt; .git/rebase-apply/patch:271: trailing whitespace.<BR>
&gt; &gt; &gt;&nbsp; *<BR>
&gt; &gt; &gt; .git/rebase-apply/patch:272: trailing whitespace.<BR>
&gt; &gt; &gt;&nbsp; * This file is part of FFmpeg.<BR>
&gt; &gt; &gt; .git/rebase-apply/patch:273: trailing whitespace.<BR>
&gt; &gt; &gt;&nbsp; *<BR>
&gt; &gt; &gt; warning: squelched 692 whitespace errors<BR>
&gt; &gt; &gt; warning: 697 lines add whitespace errors.<BR>
&gt; &gt; &gt; Using index info to reconstruct a base tree...<BR>
&gt; &gt; &gt; M libavfilter/Makefile<BR>
&gt; &gt; &gt; M libavfilter/allfilters.c<BR>
&gt; &gt; &gt; .git/rebase-apply/patch:269: trailing whitespace.<BR>
&gt; &gt; &gt; /*<BR>
&gt; &gt; &gt; .git/rebase-apply/patch:270: trailing whitespace.<BR>
&gt; &gt; &gt;&nbsp; * Copyright (c) 2021 softworkz<BR>
&gt; &gt; &gt; .git/rebase-apply/patch:271: trailing whitespace.<BR>
&gt; &gt; &gt;&nbsp; *<BR>
&gt; &gt; &gt; .git/rebase-apply/patch:272: trailing whitespace.<BR>
&gt; &gt; &gt;&nbsp; * This file is part of FFmpeg.<BR>
&gt; &gt; &gt; .git/rebase-apply/patch:273: trailing whitespace.<BR>
&gt; &gt; &gt;&nbsp; *<BR>
&gt; &gt; &gt; error: patch failed: doc/filters.texi:25644<BR>
&gt; &gt; &gt; error: doc/filters.texi: patch does not apply<BR>
&gt; &gt; &gt; error: patch failed: libavfilter/Makefile:553<BR>
&gt; &gt; &gt; error: libavfilter/Makefile: patch does not apply<BR>
&gt; &gt; &gt; error: patch failed: libavfilter/allfilters.c:544<BR>
&gt; &gt; &gt; error: libavfilter/allfilters.c: patch does not apply<BR>
&gt; &gt; &gt; error: Did you hand edit your patch?<BR>
&gt; &gt; &gt; It does not apply to blobs recorded in its index.<BR>
&gt; &gt; &gt; Patch failed at 0001 avfilter/textmod: Add textmod, censor and<BR>
&gt; show_speaker<BR>
&gt; &gt; &gt; filters<BR>
&gt; &gt; &gt; Use 'git am --show-current-patch' to see the failed patch<BR>
&gt; &gt; &gt; When you have resolved this problem, run &quot;git am --continue&quot;.<BR>
&gt; &gt; &gt; If you prefer to skip this patch, run &quot;git am --skip&quot; instead.<BR>
&gt; &gt; &gt; To restore the original branch and stop patching, run &quot;git am --abort&quot;.<BR>
&gt; &gt; &gt;<BR>
&gt; &gt; &gt; [...]<BR>
&gt; &gt; &gt; --<BR>
&gt; &gt;<BR>
&gt; &gt;<BR>
&gt; &gt; Hi Michael,<BR>
&gt; &gt;<BR>
&gt; &gt; I have no idea what is going on here.<BR>
&gt; &gt;<BR>
&gt; &gt; When I look at those lines in the file that was generated<BR>
&gt; &gt; by git format-patch, there isn't any trailing white space.<BR>
&gt; &gt; Same is true when I look at this e-mail as I have received<BR>
&gt; &gt; it from the ML, and when downloading the M-Box from patchwork,<BR>
&gt; &gt; it hasn't any trailing whitespace either.<BR>
&gt; &gt;<BR>
&gt; &gt; There are lines with a single space between hunks,<BR>
&gt; &gt; but all files generated by git format-patch have that.<BR>
&gt; &gt; I have double-checked all involved source files and none of them<BR>
&gt; &gt; has any trailing white space anymore.<BR>
&gt; &gt;<BR>
&gt; &gt; Yesterday, Andreas had pointed out the whitespace messages<BR>
&gt; &gt; would only be warnings, but then I wouldn't know what's<BR>
&gt; &gt; causing this, as it doesn't seem to be a line ending issue<BR>
&gt; &gt; either. Patchwork could apply it, interestingly.<BR>
&gt;<BR>
&gt; patchwork uses different code to apply patches we already determined this<BR>
&gt; last time.<BR>
&gt;<BR>
&gt; heres what patch does:<BR>
&gt;<BR>
&gt; patch -p1 --dry-run &lt;.git/rebase-apply/patch<BR>
&gt; (Stripping trailing CRs from patch; use --binary to disable.)<BR>
&gt; checking file doc/filters.texi<BR>
&gt; (Stripping trailing CRs from patch; use --binary to disable.)<BR>
&gt; checking file libavfilter/Makefile<BR>
&gt; Hunk #1 succeeded at 554 (offset 1 line).<BR>
&gt; (Stripping trailing CRs from patch; use --binary to disable.)<BR>
&gt; checking file libavfilter/allfilters.c<BR>
&gt; Hunk #1 succeeded at 545 (offset 1 line).<BR>
&gt; (Stripping trailing CRs from patch; use --binary to disable.)<BR>
&gt; checking file libavfilter/sf_textmod.c<BR>
&gt;<BR>
&gt; it applies it but it still complains about issues, OTOH git am<BR>
&gt; refuses this.<BR>
&gt; also using --binary patch also refuses this<BR>
&gt;<BR>
&gt; patch -p1 --dry-run --binary &lt;.git/rebase-apply/patch<BR>
&gt; checking file doc/filters.texi<BR>
&gt; Hunk #1 FAILED at 25644 (different line endings).<BR>
&gt; Hunk #2 FAILED at 25811 (different line endings).<BR>
&gt; 2 out of 2 hunks FAILED<BR>
&gt; checking file libavfilter/Makefile<BR>
&gt; Hunk #1 FAILED at 553 (different line endings).<BR>
&gt; 1 out of 1 hunk FAILED<BR>
&gt; checking file libavfilter/allfilters.c<BR>
&gt; Hunk #1 FAILED at 544 (different line endings).<BR>
&gt; 1 out of 1 hunk FAILED<BR>
&gt; checking file libavfilter/sf_textmod.c<BR>
&gt;<BR>
&gt; I dont want all of a sudden random files to change their cr/lf line endings<BR>
&gt; which this is smelling like it could result in<BR>
&gt;<BR>
&gt;<BR>
&gt; &gt;<BR>
&gt; &gt; I have attached the full patchset as zip. Hopefully this will<BR>
&gt; &gt; apply at least.<BR>
&gt;<BR>
&gt; please provide a git repository, github or whatever, working with attached<BR>
&gt; zip files is not reasonable when it involves repeatedly sent patchsets<BR>
<BR>
OMG - there's hardly anything I'd like to do more than that :-)&nbsp;<BR>
<BR>
Please hold on..<BR>
<BR>
sw<BR>
</FONT>
</P>

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TaskSubject: RE: [FFmpeg-devel] [PATCH v23 16/21] avfilter/textmod: Add textmod, censor and show_speaker filters
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Soft Works Dec. 11, 2021, 6:15 p.m. UTC | #5
> -----Original Message-----
> From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of Michael
> Niedermayer
> Sent: Saturday, December 11, 2021 6:03 PM
> To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
> Subject: Re: [FFmpeg-devel] [PATCH v23 16/21] avfilter/textmod: Add textmod,
> censor and show_speaker filters
> 
> On Sat, Dec 11, 2021 at 04:24:14PM +0000, Soft Works wrote:
> >
> >
> > > -----Original Message-----
> > > From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of Michael
> > > Niedermayer
> > > Sent: Saturday, December 11, 2021 4:33 PM
> > > To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
> > > Subject: Re: [FFmpeg-devel] [PATCH v23 16/21] avfilter/textmod: Add
> textmod,
> > > censor and show_speaker filters
> > >
> > > On Fri, Dec 10, 2021 at 09:37:53PM +0000, Soft Works wrote:
> > > > - textmod {S -> S)
> > > >   Modify subtitle text in a number of ways
> > > >
> > > > - censor {S -> S)
> > > >   Censor subtitles using a word list
> > > >
> > > > - show_speaker {S -> S)
> > > >   Prepend speaker names from ASS subtitles to the visible text lines
> > > >
> > > > Signed-off-by: softworkz <softworkz@hotmail.com>
> > > > ---
> > > >  doc/filters.texi         | 206 ++++++++++++
> > > >  libavfilter/Makefile     |   5 +
> > > >  libavfilter/allfilters.c |   3 +
> > > >  libavfilter/sf_textmod.c | 697 +++++++++++++++++++++++++++++++++++++++
> > > >  4 files changed, 911 insertions(+)
> > > >  create mode 100644 libavfilter/sf_textmod.c
> > >
> > > doesnt apply (using git am with the email, the other patches
> > > with lower numbers all applied with no such issues)
> > >
> > > Applying: avfilter/textmod: Add textmod, censor and show_speaker filters
> > > .git/rebase-apply/patch:269: trailing whitespace.
> > > /*
> > > .git/rebase-apply/patch:270: trailing whitespace.
> > >  * Copyright (c) 2021 softworkz
> > > .git/rebase-apply/patch:271: trailing whitespace.
> > >  *
> > > .git/rebase-apply/patch:272: trailing whitespace.
> > >  * This file is part of FFmpeg.
> > > .git/rebase-apply/patch:273: trailing whitespace.
> > >  *
> > > warning: squelched 692 whitespace errors
> > > warning: 697 lines add whitespace errors.
> > > Using index info to reconstruct a base tree...
> > > M	libavfilter/Makefile
> > > M	libavfilter/allfilters.c
> > > .git/rebase-apply/patch:269: trailing whitespace.
> > > /*
> > > .git/rebase-apply/patch:270: trailing whitespace.
> > >  * Copyright (c) 2021 softworkz
> > > .git/rebase-apply/patch:271: trailing whitespace.
> > >  *
> > > .git/rebase-apply/patch:272: trailing whitespace.
> > >  * This file is part of FFmpeg.
> > > .git/rebase-apply/patch:273: trailing whitespace.
> > >  *
> > > error: patch failed: doc/filters.texi:25644
> > > error: doc/filters.texi: patch does not apply
> > > error: patch failed: libavfilter/Makefile:553
> > > error: libavfilter/Makefile: patch does not apply
> > > error: patch failed: libavfilter/allfilters.c:544
> > > error: libavfilter/allfilters.c: patch does not apply
> > > error: Did you hand edit your patch?
> > > It does not apply to blobs recorded in its index.
> > > Patch failed at 0001 avfilter/textmod: Add textmod, censor and
> show_speaker
> > > filters
> > > Use 'git am --show-current-patch' to see the failed patch
> > > When you have resolved this problem, run "git am --continue".
> > > If you prefer to skip this patch, run "git am --skip" instead.
> > > To restore the original branch and stop patching, run "git am --abort".
> > >
> > > [...]
> > > --
> >
> >
> > Hi Michael,
> >
> > I have no idea what is going on here.
> >
> > When I look at those lines in the file that was generated
> > by git format-patch, there isn't any trailing white space.
> > Same is true when I look at this e-mail as I have received
> > it from the ML, and when downloading the M-Box from patchwork,
> > it hasn't any trailing whitespace either.
> >
> > There are lines with a single space between hunks,
> > but all files generated by git format-patch have that.
> > I have double-checked all involved source files and none of them
> > has any trailing white space anymore.
> >
> > Yesterday, Andreas had pointed out the whitespace messages
> > would only be warnings, but then I wouldn't know what's
> > causing this, as it doesn't seem to be a line ending issue
> > either. Patchwork could apply it, interestingly.
> 
> patchwork uses different code to apply patches we already determined this
> last time.
> 
> heres what patch does:
> 
> patch -p1 --dry-run <.git/rebase-apply/patch
> (Stripping trailing CRs from patch; use --binary to disable.)
> checking file doc/filters.texi
> (Stripping trailing CRs from patch; use --binary to disable.)
> checking file libavfilter/Makefile
> Hunk #1 succeeded at 554 (offset 1 line).
> (Stripping trailing CRs from patch; use --binary to disable.)
> checking file libavfilter/allfilters.c
> Hunk #1 succeeded at 545 (offset 1 line).
> (Stripping trailing CRs from patch; use --binary to disable.)
> checking file libavfilter/sf_textmod.c
> 
> it applies it but it still complains about issues, OTOH git am
> refuses this.
> also using --binary patch also refuses this
> 
> patch -p1 --dry-run --binary <.git/rebase-apply/patch
> checking file doc/filters.texi
> Hunk #1 FAILED at 25644 (different line endings).
> Hunk #2 FAILED at 25811 (different line endings).
> 2 out of 2 hunks FAILED
> checking file libavfilter/Makefile
> Hunk #1 FAILED at 553 (different line endings).
> 1 out of 1 hunk FAILED
> checking file libavfilter/allfilters.c
> Hunk #1 FAILED at 544 (different line endings).
> 1 out of 1 hunk FAILED
> checking file libavfilter/sf_textmod.c
> 
> I dont want all of a sudden random files to change their cr/lf line endings
> which this is smelling like it could result in
> 
> 
> >
> > I have attached the full patchset as zip. Hopefully this will
> > apply at least.
> 
> please provide a git repository, github or whatever, working with attached
> zip files is not reasonable when it involves repeatedly sent patchsets


This is a fresh fork to which I pushed my v32 subtitles branch:

https://github.com/softworkz/FFmpeg/tree/subs_v23


And this one additionally has the dvbsubdec fix and the fix for hard-space parsing
which patchwork didn't take (due to mixed line endings).

https://github.com/softworkz/FFmpeg/tree/subs_v23_plus


Thanks again,
softworkz
diff mbox series

Patch

diff --git a/doc/filters.texi b/doc/filters.texi
index 7041f9031e..e87d3993df 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -25644,6 +25644,145 @@  existing filters using @code{--disable-filters}.
 
 Below is a description of the currently available subtitle filters.
 
+
+@section censor
+
+Censor selected words in text subtitles.
+
+Inputs:
+@itemize
+@item 0: Subtitles[TEXT]
+@end itemize
+
+Outputs:
+@itemize
+@item 0: Subtitles[TEXT]
+@end itemize
+
+It accepts the following parameters:
+
+@table @option
+@item mode
+The censoring mode to apply.
+
+Supported censoring modes are:
+
+@table @var
+@item 0, keep_first_last
+Replace all characters with the 'censor_char' except the first and the last character of a word.
+For words with less than 4 characters, the last character will be replaced as well.
+For words with less than 3 characters, the first character will be replaced as well.
+@item 1, keep_first
+Replace all characters with the 'censor_char' except the first character of a word.
+For words with less than 3 characters, the first character will be replaced as well.
+@item 2, all
+Replace all characters with the 'censor_char'.
+@end table
+
+@item words
+A list of words to censor, separated by 'separator'.
+
+@item words_file
+Specify a file from which to load the contents for the 'words' parameter.
+
+@item censor_char
+Single character used as replacement for censoring.
+
+@item separator
+Delimiter character for words. Used with replace_words and remove_words- Must be a single character.
+The default is '.'.
+
+@end table
+
+@subsection Examples
+
+@itemize
+@item
+Censor a few given words with a pound character.
+@example
+ffmpeg -i "http://streams.videolan.org/samples/sub/SSA/subtitle_testing_complex.mkv" -filter_complex "[0:1]censor=words='diss,louder,hope,beam,word':censor_char='#'" -map 0 -y output.mkv
+@end example
+@end itemize
+
+
+@section textmod
+
+Modify subtitle text in a number of ways.
+
+Inputs:
+@itemize
+@item 0: Subtitles[TEXT]
+@end itemize
+
+Outputs:
+@itemize
+@item 0: Subtitles[TEXT]
+@end itemize
+
+It accepts the following parameters:
+
+@table @option
+@item mode
+The kind of text modification to apply
+
+Supported operation modes are:
+
+@table @var
+@item 0, leet
+Convert subtitle text to 'leet speak'. It's primarily useful for testing as the modification will be visible with almost all text lines.
+@item 1, to_upper
+Change all text to upper case. Might improve readability.
+@item 2, to_lower
+Change all text to lower case.
+@item 3, replace_chars
+Replace one or more characters. Requires the find and replace parameters to be specified.
+Both need to be equal in length.
+The first char in find is replaced by the first char in replace, same for all subsequent chars.
+@item 4, remove_chars
+Remove certain characters. Requires the find parameter to be specified.
+All chars in the find parameter string will be removed from all subtitle text.
+@item 5, replace_words
+Replace one or more words. Requires the find and replace parameters to be specified. Multiple words must be separated by the delimiter char specified vie the separator parameter (default: ',').
+The number of words in the find and replace parameters needs to be equal.
+The first word in find is replaced by the first word in replace, same for all subsequent words
+@item 6, remove_words
+Remove certain words. Requires the find parameter to be specified. Multiple words must be separated by the delimiter char specified vie the separator parameter (default: ',').
+All words in the find parameter string will be removed from all subtitle text.
+@end table
+
+@item find
+Required for replace_chars, remove_chars, replace_words and remove_words.
+
+@item find_file
+Specify a file from which to load the contents for the 'find' parameter.
+
+@item replace
+Required for replace_chars and replace_words.
+
+@item replace_file
+Specify a file from which to load the contents for the 'replace' parameter.
+
+@item separator
+Delimiter character for words. Used with replace_words and remove_words- Must be a single character.
+The default is '.'.
+
+@end table
+
+@subsection Examples
+
+@itemize
+@item
+Change all characters to upper case while keeping all styles and animations:
+@example
+ffmpeg -i "https://streams.videolan.org/ffmpeg/mkv_subtitles.mkv" -filter_complex "[0:s]textmod=mode=to_upper" -map 0 -y out.mkv
+@end example
+@item
+Remove a set of symbol characters for am improved and smoother visual apperance:
+@example
+ffmpeg -i "https://streams.videolan.org/ffmpeg/mkv_subtitles.mkv" -filter_complex "[0:s]textmod=mode=remove_chars:find='$&#@*§'" -map 0 -y out.mkv
+@end example
+@end itemize
+
 @section graphicsub2video
 
 Renders graphic subtitles as video frames.
@@ -25811,6 +25950,73 @@  ffmpeg -i "http://streams.videolan.org/samples/sub/SSA/subtitle_testing_complex.
 @end example
 @end itemize
 
+@section showspeaker
+
+Prepend speaker names to subtitle lines (when available).
+
+Subtitles in ASS/SSA format are often including the names of the persons
+or character for each subtitle line. The showspeaker filter adds those names
+to the actual subtitle text to make it visible on playback.
+
+Inputs:
+@itemize
+@item 0: Subtitles[TEXT]
+@end itemize
+
+Outputs:
+@itemize
+@item 0: Subtitles[TEXT]
+@end itemize
+
+It accepts the following parameters:
+
+@table @option
+@item format
+The format for prepending speaker names. Default is 'square_brackets'.
+
+Supported operation modes are:
+
+@table @var
+@item 0, square_brackets
+Enclose the speaker name in square brackets, followed by space ('[speaker] text').
+@item 1, round_brackets
+Enclose the speaker name in round brackets, followed by space ('(speaker) text').
+@item 2, colon
+Separate the speaker name with a colon and space ('speaker: text').
+@item 3, plain
+Separate the speaker name with a space only ('speaker text').
+@end table
+
+@item line_break
+Set thís parameter to insert a line break between speaker name and text instead of the space character.
+
+@item style
+Allows to set a specific style for the speaker name text.
+
+This can be either a named style that exists in the ass subtitle header script (e.g. 'Default') or an ass style override code.
+Example:  @{\\c&HDD0000&\\be1\\i1\\bord10@}
+This sets the color to blue, enables edge blurring, italic font and a border of size 10.
+
+The behavior is as follows:
+
+- When the style parameter is not provided, the filter will find the first position in the event string that is actual text.
+  The speaker name will be inserted at this position. This allows to have the speaker name shown in the same style like the
+  regular text, in case the string would start with a sequence of style codes.
+- When the style parameter is provided, everything will be prepended to the original text:
+  Style Code or Style name >> Speaker Name >> Style Reset Code >> Original Text
+
+@end table
+
+@subsection Examples
+
+@itemize
+@item
+Prepend speaker names with blue text, smooth edges and blend/overlay that onto the video.
+@example
+ffmpeg -i INPUT -filter_complex "showspeaker=format=colon:style='@{\\c&HDD0000&\\be1@}',[0:v]overlay_textsubs"
+@end example
+@end itemize
+
 @section textsub2video
 
 Converts text subtitles to video frames.
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index a49369e7f5..d2995fbec6 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -553,6 +553,11 @@  OBJS-$(CONFIG_YUVTESTSRC_FILTER)             += vsrc_testsrc.o
 
 OBJS-$(CONFIG_NULLSINK_FILTER)               += vsink_nullsink.o
 
+# subtitle filters
+OBJS-$(CONFIG_CENSOR_FILTER)                 += sf_textmod.o
+OBJS-$(CONFIG_SHOW_SPEAKER_FILTER)           += sf_textmod.o
+OBJS-$(CONFIG_TEXTMOD_FILTER)                += sf_textmod.o
+
 # multimedia filters
 OBJS-$(CONFIG_ABITSCOPE_FILTER)              += avf_abitscope.o
 OBJS-$(CONFIG_ADRAWGRAPH_FILTER)             += f_drawgraph.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index dca38cd57b..673f9fb839 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -544,6 +544,9 @@  extern const AVFilter ff_avf_showvolume;
 extern const AVFilter ff_avf_showwaves;
 extern const AVFilter ff_avf_showwavespic;
 extern const AVFilter ff_vaf_spectrumsynth;
+extern const AVFilter ff_sf_censor;
+extern const AVFilter ff_sf_showspeaker;
+extern const AVFilter ff_sf_textmod;
 extern const AVFilter ff_svf_graphicsub2video;
 extern const AVFilter ff_svf_textsub2video;
 
diff --git a/libavfilter/sf_textmod.c b/libavfilter/sf_textmod.c
new file mode 100644
index 0000000000..d73f329b87
--- /dev/null
+++ b/libavfilter/sf_textmod.c
@@ -0,0 +1,697 @@ 
+/*
+ * Copyright (c) 2021 softworkz
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * text subtitle filter which allows to modify subtitle text in several ways
+ */
+
+#include <libavutil/ass_internal.h>
+
+#include "libavutil/opt.h"
+#include "internal.h"
+#include "libavutil/ass_split_internal.h"
+#include "libavutil/bprint.h"
+#include "libavutil/file.h"
+
+static const char* leet_src = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+static const char* leet_dst = "abcd3f6#1jklmn0pq257uvwxyzAB(D3F6#1JKLMN0PQ257UVWXYZ";
+
+enum TextModFilterType {
+    TM_TEXTMOD,
+    TM_CENSOR,
+    TM_SHOW_SPEAKER,
+};
+
+enum TextModOperation {
+    OP_LEET,
+    OP_TO_UPPER,
+    OP_TO_LOWER,
+    OP_REPLACE_CHARS,
+    OP_REMOVE_CHARS,
+    OP_REPLACE_WORDS,
+    OP_REMOVE_WORDS,
+    NB_OPS,
+};
+
+enum CensorMode {
+    CM_KEEP_FIRST_LAST,
+    CM_KEEP_FIRST,
+    CM_ALL,
+};
+
+enum ShowSpeakerMode {
+    SM_SQUARE_BRACKETS,
+    SM_ROUND_BRACKETS,
+    SM_COLON,
+    SM_PLAIN,
+};
+
+typedef struct TextModContext {
+    const AVClass *class;
+    enum AVSubtitleType format;
+    enum TextModFilterType filter_type;
+    enum TextModOperation operation;
+    enum CensorMode censor_mode;
+    enum ShowSpeakerMode speaker_mode;
+    char *find;
+    char *find_file;
+    char *style;
+    char *replace;
+    char *replace_file;
+    char *separator;
+    char *censor_char;
+    char **find_list;
+    int  line_break;
+    int  nb_find_list;
+    char **replace_list;
+    int  nb_replace_list;
+} TextModContext;
+
+static char **split_string(char *source, int *nb_elems, const char *delim)
+{
+    char **list = NULL;
+    char *temp = NULL;
+    char *ptr = av_strtok(source, delim, &temp);
+
+    while (ptr) {
+        if (strlen(ptr)) {
+            av_dynarray_add(&list, nb_elems, ptr);
+            if (!list)
+                return NULL;
+        }
+
+        ptr = av_strtok(NULL, delim, &temp);
+    }
+
+    if (!list)
+        return NULL;
+
+    for (int i = 0; i < *nb_elems; i++) {
+        list[i] = av_strdup(list[i]);
+        if (!list[i]) {
+            for (int n = 0; n < i; n++)
+                av_free(list[n]);
+            av_free(list);
+            return NULL;
+        }
+    }
+
+    return list;
+}
+
+static int load_text_from_file(AVFilterContext *ctx, const char *file_name, char **text, char separator)
+{
+    int err;
+    uint8_t *textbuf;
+    char *tmp;
+    size_t textbuf_size;
+    int offset = 0;
+
+    if ((err = av_file_map(file_name, &textbuf, &textbuf_size, 0, ctx)) < 0) {
+        av_log(ctx, AV_LOG_ERROR, "The text file '%s' could not be read or is empty\n", file_name);
+        return err;
+    }
+
+    if (textbuf_size > 1 &&
+        (textbuf[0] == 0xFF && textbuf[1] == 0xFE
+        || textbuf[0] == 0xFE && textbuf[1] == 0xFF)) {
+        av_log(ctx, AV_LOG_ERROR, "UTF text files are not supported. File: %s\n", file_name);
+        return AVERROR(EINVAL);
+    }
+
+    if (textbuf_size > 2 && textbuf[0] == 0xEF && textbuf[1] == 0xBB && textbuf[2] == 0xBF)
+        offset = 3; // UTF-8
+
+    if (textbuf_size > SIZE_MAX - 1 || !((tmp = av_strndup((char *)textbuf + offset, textbuf_size - offset)))) {
+        av_file_unmap(textbuf, textbuf_size);
+        return AVERROR(ENOMEM);
+    }
+
+    av_file_unmap(textbuf, textbuf_size);
+
+    for (size_t i = 0; i < strlen(tmp); i++) {
+        switch (tmp[i]) {
+        case '\n':
+        case '\r':
+        case '\f':
+        case '\v':
+            tmp[i] = separator;
+        }
+    }
+
+    *text = tmp;
+
+    return 0;
+}
+
+static int load_files(AVFilterContext *ctx)
+{
+    TextModContext *s = ctx->priv;
+    int ret;
+
+    if (!s->separator || strlen(s->separator) != 1) {
+        av_log(ctx, AV_LOG_ERROR, "A single character needs to be specified for the separator parameter.\n");
+        return AVERROR(EINVAL);
+    }
+
+    if (s->find_file && strlen(s->find_file)) {
+        ret = load_text_from_file(ctx, s->find_file, &s->find, s->separator[0]);
+        if (ret < 0 )
+            return ret;
+    }
+
+    if (s->replace_file && strlen(s->replace_file)) {
+        ret = load_text_from_file(ctx, s->replace_file, &s->replace, s->separator[0]);
+        if (ret < 0 )
+            return ret;
+    }
+
+    return 0;
+}
+
+static int init_censor(AVFilterContext *ctx)
+{
+    TextModContext *s = ctx->priv;
+    int ret;
+
+    s->filter_type = TM_CENSOR;
+    s->operation = OP_REPLACE_WORDS;
+
+    ret = load_files(ctx);
+    if (ret < 0 )
+        return ret;
+
+    if (!s->find || !strlen(s->find)) {
+        av_log(ctx, AV_LOG_ERROR, "Either the 'words' or the 'words_file' parameter needs to be specified\n");
+        return AVERROR(EINVAL);
+    }
+
+    if (!s->censor_char || strlen(s->censor_char) != 1) {
+        av_log(ctx, AV_LOG_ERROR, "A single character needs to be specified for the censor_char parameter\n");
+        return AVERROR(EINVAL);
+    }
+
+    s->find_list = split_string(s->find, &s->nb_find_list, s->separator);
+    if (!s->find_list)
+        return AVERROR(ENOMEM);
+
+    s->replace_list = av_calloc(s->nb_find_list, sizeof(char *));
+    if (!s->replace_list)
+        return AVERROR(ENOMEM);
+
+    for (int i = 0; i < s->nb_find_list; i++) {
+        size_t len, start = 0, end;
+        char *item = av_strdup(s->find_list[i]);
+        if (!item)
+            return AVERROR(ENOMEM);
+
+        len = end = strlen(item);
+
+        switch (s->censor_mode) {
+        case CM_KEEP_FIRST_LAST:
+
+            if (len > 2)
+                start = 1;
+            if (len > 3)
+                end--;
+
+            break;
+        case CM_KEEP_FIRST:
+
+            if (len > 2)
+                start = 1;
+
+            break;
+        }
+
+        for (size_t n = start; n < end; n++)
+            item[n] = s->censor_char[0];
+
+        s->replace_list[i] = item;
+    }
+
+    return 0;
+}
+
+static int init_showspeaker(AVFilterContext *ctx)
+{
+    TextModContext *s = ctx->priv;
+    s->filter_type = TM_SHOW_SPEAKER;
+
+    return 0;
+}
+
+static int init(AVFilterContext *ctx)
+{
+    TextModContext *s = ctx->priv;
+    int ret;
+
+    ret = load_files(ctx);
+    if (ret < 0 )
+        return ret;
+
+    switch (s->operation) {
+    case OP_REPLACE_CHARS:
+    case OP_REMOVE_CHARS:
+    case OP_REPLACE_WORDS:
+    case OP_REMOVE_WORDS:
+        if (!s->find || !strlen(s->find)) {
+            av_log(ctx, AV_LOG_ERROR, "Selected mode requires the 'find' parameter to be specified\n");
+            return AVERROR(EINVAL);
+        }
+        break;
+    }
+
+    switch (s->operation) {
+    case OP_REPLACE_CHARS:
+    case OP_REPLACE_WORDS:
+        if (!s->replace || !strlen(s->replace)) {
+            av_log(ctx, AV_LOG_ERROR, "Selected mode requires the 'replace' parameter to be specified\n");
+            return AVERROR(EINVAL);
+        }
+        break;
+    }
+
+    if (s->operation == OP_REPLACE_CHARS && strlen(s->find) != strlen(s->replace)) {
+        av_log(ctx, AV_LOG_ERROR, "Selected mode requires the 'find' and 'replace' parameters to have the same length\n");
+        return AVERROR(EINVAL);
+    }
+
+    if (s->operation == OP_REPLACE_WORDS || s->operation == OP_REMOVE_WORDS) {
+        if (!s->separator || strlen(s->separator) != 1) {
+            av_log(ctx, AV_LOG_ERROR, "Selected mode requires a single separator char to be specified\n");
+            return AVERROR(EINVAL);
+        }
+
+        s->find_list = split_string(s->find, &s->nb_find_list, s->separator);
+        if (!s->find_list)
+            return AVERROR(ENOMEM);
+
+        if (s->operation == OP_REPLACE_WORDS) {
+
+            s->replace_list = split_string(s->replace, &s->nb_replace_list, s->separator);
+            if (!s->replace_list)
+                return AVERROR(ENOMEM);
+
+            if (s->nb_find_list != s->nb_replace_list) {
+                av_log(ctx, AV_LOG_ERROR, "The number of words in 'find' and 'replace' needs to be equal\n");
+                return AVERROR(EINVAL);
+            }
+        }
+    }
+
+    return 0;
+}
+
+static void uninit(AVFilterContext *ctx)
+{
+    TextModContext *s = ctx->priv;
+
+    for (int i = 0; i < s->nb_find_list; i++)
+        av_freep(&s->find_list[i]);
+
+    s->nb_find_list = 0;
+    av_freep(&s->find_list);
+
+    for (int i = 0; i < s->nb_replace_list; i++)
+        av_freep(&s->replace_list[i]);
+
+    s->nb_replace_list = 0;
+    av_freep(&s->replace_list);
+}
+
+static char *process_text(TextModContext *s, char *text)
+{
+    const char *char_src = s->find;
+    const char *char_dst = s->replace;
+    char *result         = NULL;
+    int escape_level     = 0, k = 0;
+
+    switch (s->operation) {
+    case OP_LEET:
+    case OP_REPLACE_CHARS:
+
+        if (s->operation == OP_LEET) {
+            char_src = leet_src;
+            char_dst = leet_dst;
+        }
+
+        result = av_strdup(text);
+        if (!result)
+            return NULL;
+
+        for (size_t n = 0; n < strlen(result); n++) {
+            if (result[n] == '{')
+                escape_level++;
+
+            if (!escape_level) {
+                size_t len = strlen(char_src);
+                for (size_t t = 0; t < len; t++) {
+                    if (result[n] == char_src[t]) {
+                        result[n] = char_dst[t];
+                        break;
+                    }
+                }
+            }
+
+            if (result[n] == '}')
+                escape_level--;
+        }
+
+        break;
+    case OP_TO_UPPER:
+    case OP_TO_LOWER:
+
+        result = av_strdup(text);
+        if (!result)
+            return NULL;
+
+        for (size_t n = 0; n < strlen(result); n++) {
+            if (result[n] == '{')
+                escape_level++;
+            if (!escape_level)
+                result[n] = s->operation == OP_TO_LOWER ? av_tolower(result[n]) : av_toupper(result[n]);
+            if (result[n] == '}')
+                escape_level--;
+        }
+
+        break;
+    case OP_REMOVE_CHARS:
+
+        result = av_strdup(text);
+        if (!result)
+            return NULL;
+
+        for (size_t n = 0; n < strlen(result); n++) {
+            int skip_char = 0;
+
+            if (result[n] == '{')
+                escape_level++;
+
+            if (!escape_level) {
+                size_t len = strlen(char_src);
+                for (size_t t = 0; t < len; t++) {
+                    if (result[n] == char_src[t]) {
+                        skip_char = 1;
+                        break;
+                    }
+                }
+            }
+
+            if (!skip_char)
+                result[k++] = result[n];
+
+            if (result[n] == '}')
+                escape_level--;
+        }
+
+        result[k] = 0;
+
+        break;
+    case OP_REPLACE_WORDS:
+    case OP_REMOVE_WORDS:
+
+        result = av_strdup(text);
+        if (!result)
+            return NULL;
+
+        for (int n = 0; n < s->nb_find_list; n++) {
+            char *tmp           = result;
+            const char *replace = (s->operation == OP_REPLACE_WORDS) ? s->replace_list[n] : "";
+
+            result = av_strireplace(result, s->find_list[n], replace);
+            if (!result)
+                return NULL;
+
+            av_free(tmp);
+        }
+
+        break;
+    }
+
+    return result;
+}
+
+static char *process_dialog_show_speaker(TextModContext *s, char *ass_line)
+{
+    ASSDialog *dialog = avpriv_ass_split_dialog(NULL, ass_line);
+    int escape_level = 0;
+    unsigned pos = 0, len;
+    char *result, *text;
+    AVBPrint pbuf;
+
+    if (!dialog)
+        return NULL;
+
+    text = process_text(s, dialog->text);
+    if (!text)
+        return NULL;
+
+    if (!dialog->name || !strlen(dialog->name) || !dialog->text || !strlen(dialog->text))
+        return av_strdup(ass_line);
+
+    // Find insertion point in case the line starts with style codes
+    len = (unsigned)strlen(dialog->text);
+    for (unsigned i = 0; i < len; i++) {
+
+        if (dialog->text[i] == '{')
+            escape_level++;
+
+        if (dialog->text[i] == '}')
+            escape_level--;
+
+        if (escape_level == 0) {
+            pos = i;
+            break;
+        }
+    }
+
+    if (s->style && strlen(s->style))
+        // When a style is specified reset the insertion point
+        // (always add speaker plus style at the start in that case)
+        pos = 0;
+
+    if (pos >= len - 1)
+        return av_strdup(ass_line);
+
+    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
+
+    if (pos > 0) {
+        av_bprint_append_data(&pbuf, dialog->text, pos);
+    }
+
+    if (s->style && strlen(s->style)) {
+        if (s->style[0] == '{')
+            // Assume complete and valid style code, e.g. {\c&HFF0000&}
+            av_bprintf(&pbuf, "%s", s->style);
+        else
+            // Otherwise it must be a style name
+            av_bprintf(&pbuf, "{\\r%s}", s->style);
+    }
+
+    switch (s->speaker_mode) {
+    case SM_SQUARE_BRACKETS:
+        av_bprintf(&pbuf, "[%s]", dialog->name);
+        break;
+    case SM_ROUND_BRACKETS:
+        av_bprintf(&pbuf, "(%s)", dialog->name);
+        break;
+    case SM_COLON:
+        av_bprintf(&pbuf, "%s:", dialog->name);
+        break;
+    case SM_PLAIN:
+        av_bprintf(&pbuf, "%s", dialog->name);
+        break;
+    }
+
+    if (s->style && strlen(s->style)) {
+        // Reset line style
+        if (dialog->style && strlen(dialog->style) && !av_strcasecmp(dialog->style, "default"))
+            av_bprintf(&pbuf, "{\\r%s}", dialog->style);
+        else
+            av_bprintf(&pbuf, "{\\r}");
+    }
+
+    if (s->line_break)
+        av_bprintf(&pbuf, "\\N");
+    else
+        av_bprintf(&pbuf, " ");
+
+    av_bprint_append_data(&pbuf, dialog->text + pos, len - pos);
+
+    av_bprint_finalize(&pbuf, &text);
+
+    result = avpriv_ass_get_dialog(dialog->readorder, dialog->layer, dialog->style, dialog->name, text);
+
+    av_free(text);
+    avpriv_ass_free_dialog(&dialog);
+    return result;
+}
+
+static char *process_dialog(TextModContext *s, char *ass_line)
+{
+    ASSDialog *dialog;
+    char *result, *text;
+
+    if (s->filter_type == TM_SHOW_SPEAKER)
+        return process_dialog_show_speaker(s, ass_line);
+
+    dialog = avpriv_ass_split_dialog(NULL, ass_line);
+    if (!dialog)
+        return NULL;
+
+    text = process_text(s, dialog->text);
+    if (!text)
+        return NULL;
+
+    result = avpriv_ass_get_dialog(dialog->readorder, dialog->layer, dialog->style, dialog->name, text);
+
+    av_free(text);
+    avpriv_ass_free_dialog(&dialog);
+    return result;
+}
+
+static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
+{
+    TextModContext *s = inlink->dst->priv;
+    AVFilterLink *outlink = inlink->dst->outputs[0];
+    int ret;
+
+    outlink->format = inlink->format;
+
+    ret = av_frame_make_writable(frame);
+    if (ret < 0)
+        return ret;
+
+    for (unsigned i = 0; i < frame->num_subtitle_areas; i++) {
+
+        AVSubtitleArea *area = frame->subtitle_areas[i];
+
+        if (area->ass) {
+            char *tmp = area->ass;
+            area->ass = process_dialog(s, area->ass);
+            av_free(tmp);
+            if (!area->ass)
+                return AVERROR(ENOMEM);
+        }
+    }
+
+    return ff_filter_frame(outlink, frame);
+}
+
+#define OFFSET(x) offsetof(TextModContext, x)
+#define FLAGS (AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_FILTERING_PARAM)
+
+static const AVOption textmod_options[] = {
+    { "mode",             "set operation mode",              OFFSET(operation),    AV_OPT_TYPE_INT,    {.i64=OP_LEET},          OP_LEET, NB_OPS-1, FLAGS, "mode" },
+    {   "leet",           "convert text to 'leet speak'",    0,                    AV_OPT_TYPE_CONST,  {.i64=OP_LEET},          0,       0,        FLAGS, "mode" },
+    {   "to_upper",       "change to upper case",            0,                    AV_OPT_TYPE_CONST,  {.i64=OP_TO_UPPER},      0,       0,        FLAGS, "mode" },
+    {   "to_lower",       "change to lower case",            0,                    AV_OPT_TYPE_CONST,  {.i64=OP_TO_LOWER},      0,       0,        FLAGS, "mode" },
+    {   "replace_chars",  "replace characters",              0,                    AV_OPT_TYPE_CONST,  {.i64=OP_REPLACE_CHARS}, 0,       0,        FLAGS, "mode" },
+    {   "remove_chars",   "remove characters",               0,                    AV_OPT_TYPE_CONST,  {.i64=OP_REMOVE_CHARS},  0,       0,        FLAGS, "mode" },
+    {   "replace_words",  "replace words",                   0,                    AV_OPT_TYPE_CONST,  {.i64=OP_REPLACE_WORDS}, 0,       0,        FLAGS, "mode" },
+    {   "remove_words",   "remove words",                    0,                    AV_OPT_TYPE_CONST,  {.i64=OP_REMOVE_WORDS},  0,       0,        FLAGS, "mode" },
+    { "find",             "chars/words to find or remove",   OFFSET(find),         AV_OPT_TYPE_STRING, {.str = NULL},           0,       0,        FLAGS, NULL   },
+    { "find_file",        "load find param from file",       OFFSET(find_file),    AV_OPT_TYPE_STRING, {.str = NULL},           0,       0,        FLAGS, NULL   },
+    { "replace",          "chars/words to replace",          OFFSET(replace),      AV_OPT_TYPE_STRING, {.str = NULL},           0,       0,        FLAGS, NULL   },
+    { "replace_file",     "load replace param from file",    OFFSET(replace_file), AV_OPT_TYPE_STRING, {.str = NULL},           0,       0,        FLAGS, NULL   },
+    { "separator",        "word separator",                  OFFSET(separator),    AV_OPT_TYPE_STRING, {.str = ","},            0,       0,        FLAGS, NULL   },
+    { NULL },
+};
+
+
+static const AVOption censor_options[] = {
+    { "mode",               "set censoring mode",        OFFSET(censor_mode), AV_OPT_TYPE_INT,    {.i64=CM_KEEP_FIRST_LAST}, 0, 2, FLAGS, "mode" },
+    {   "keep_first_last",  "censor inner chars",        0,                   AV_OPT_TYPE_CONST,  {.i64=CM_KEEP_FIRST_LAST}, 0, 0, FLAGS, "mode" },
+    {   "keep_first",       "censor all but first char", 0,                   AV_OPT_TYPE_CONST,  {.i64=CM_KEEP_FIRST},      0, 0, FLAGS, "mode" },
+    {   "all",              "censor all chars",          0,                   AV_OPT_TYPE_CONST,  {.i64=CM_ALL},             0, 0, FLAGS, "mode" },
+    { "words",              "list of words to censor",   OFFSET(find),        AV_OPT_TYPE_STRING, {.str = NULL},             0, 0, FLAGS, NULL   },
+    { "words_file",         "path to word list file",    OFFSET(find_file),   AV_OPT_TYPE_STRING, {.str = NULL},             0, 0, FLAGS, NULL   },
+    { "separator",          "word separator",            OFFSET(separator),   AV_OPT_TYPE_STRING, {.str = ","},              0, 0, FLAGS, NULL   },
+    { "censor_char",        "replacement character",     OFFSET(censor_char), AV_OPT_TYPE_STRING, {.str = "*"},              0, 0, FLAGS, NULL   },
+    { NULL },
+};
+
+static const AVOption showspeaker_options[] = {
+    { "format",             "speaker name formatting",        OFFSET(speaker_mode), AV_OPT_TYPE_INT,    {.i64=SM_SQUARE_BRACKETS}, 0, 2, FLAGS, "format" },
+    {   "square_brackets",  "[speaker] text",                 0,                    AV_OPT_TYPE_CONST,  {.i64=SM_SQUARE_BRACKETS}, 0, 0, FLAGS, "format" },
+    {   "round_brackets",   "(speaker) text",                 0,                    AV_OPT_TYPE_CONST,  {.i64=SM_ROUND_BRACKETS},  0, 0, FLAGS, "format" },
+    {   "colon",            "speaker: text",                  0,                    AV_OPT_TYPE_CONST,  {.i64=SM_COLON},           0, 0, FLAGS, "format" },
+    {   "plain",            "speaker text",                   0,                    AV_OPT_TYPE_CONST,  {.i64=SM_PLAIN},           0, 0, FLAGS, "format" },
+    { "line_break",         "insert line break",              OFFSET(line_break),   AV_OPT_TYPE_BOOL,   {.i64=0},                  0, 1, FLAGS, NULL     },
+    { "style",              "ass type name or style code",    OFFSET(style),        AV_OPT_TYPE_STRING, {.str = NULL},             0, 0, FLAGS, NULL     },
+    { NULL },
+};
+
+AVFILTER_DEFINE_CLASS(textmod);
+AVFILTER_DEFINE_CLASS(censor);
+AVFILTER_DEFINE_CLASS(showspeaker);
+
+static const AVFilterPad inputs[] = {
+    {
+        .name         = "default",
+        .type         = AVMEDIA_TYPE_SUBTITLE,
+        .filter_frame = filter_frame,
+    },
+};
+
+static const AVFilterPad outputs[] = {
+    {
+        .name          = "default",
+        .type          = AVMEDIA_TYPE_SUBTITLE,
+    },
+};
+
+const AVFilter ff_sf_textmod = {
+    .name          = "textmod",
+    .description   = NULL_IF_CONFIG_SMALL("Modify subtitle text in several ways"),
+    .init          = init,
+    .uninit        = uninit,
+    .priv_size     = sizeof(TextModContext),
+    .priv_class    = &textmod_class,
+    FILTER_INPUTS(inputs),
+    FILTER_OUTPUTS(outputs),
+    FILTER_SINGLE_SUBFMT(AV_SUBTITLE_FMT_ASS),
+};
+
+const AVFilter ff_sf_censor = {
+    .name          = "censor",
+    .description   = NULL_IF_CONFIG_SMALL("Censor words in subtitle text"),
+    .init          = init_censor,
+    .uninit        = uninit,
+    .priv_size     = sizeof(TextModContext),
+    .priv_class    = &censor_class,
+    FILTER_INPUTS(inputs),
+    FILTER_OUTPUTS(outputs),
+    FILTER_SINGLE_SUBFMT(AV_SUBTITLE_FMT_ASS),
+};
+
+const AVFilter ff_sf_showspeaker = {
+    .name          = "showspeaker",
+    .description   = NULL_IF_CONFIG_SMALL("Prepend speaker names to text subtitles (when available)"),
+    .init          = init_showspeaker,
+    .uninit        = uninit,
+    .priv_size     = sizeof(TextModContext),
+    .priv_class    = &showspeaker_class,
+    FILTER_INPUTS(inputs),
+    FILTER_OUTPUTS(outputs),
+    FILTER_SINGLE_SUBFMT(AV_SUBTITLE_FMT_ASS),
+};