[FFmpeg-devel] [PATCH 1/5] MAINTAINERS: Add a maintaince level field

[FFmpeg-devel] [PATCH 1/5] MAINTAINERS: Add a maintaince level field

[Michael Niedermayer]

Text was stolen from the linux kernel
This is thus identical to the kernel just a different more compact format.
I am very happy also to switch the file entirely to the format of the linux kernel maintainer list
if people prefer

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 MAINTAINERS | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 6ce8bc86393..a27116e9d15 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6,7 +6,12 @@ FFmpeg code.
 
 Please try to keep entries where you are the maintainer up to date!
 
-Names in () mean that the maintainer currently has no time to maintain the code.
+maintaince level:
+[X] Old code. Something tagged obsolete generally means it has been replaced by a better system and you should be using that.
+[0] No current maintainer [but maybe you could take the role as you write your new code].
+[1] It has a maintainer but they don't have time to do much other than throw the odd patch in.
+[2] Someone actually looks after it.
+
 A (CC <address>) after the name means that the maintainer prefers to be CC-ed on
 patches and related discussions.
 
-- 
2.45.2

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[FFmpeg-devel] [PATCH 2/5] MAINTAINERS: some random updating

[Michael Niedermayer]

Adding level to some of my entries
Adding level to some random entries of other people who i have seen actively maintaining their code
removing some people who have not been active where others where active

For most we will need to contact people and ask if they are still available as maintainers
(but for cases where patches are ignored for many months even with pings sent to the maintainer
 entries should be set to unmaintained)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 MAINTAINERS | 60 ++++++++++++++++++++++++++---------------------------
 1 file changed, 30 insertions(+), 30 deletions(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index a27116e9d15..94d9b04d249 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -23,10 +23,10 @@ ffmpeg:
   ffmpeg.c                              Michael Niedermayer, Anton Khirnov
 
 ffplay:
-  ffplay.c                              Marton Balint
+  ffplay.c                          [2] Marton Balint
 
 ffprobe:
-  ffprobe.c                             Stefano Sabatini
+  ffprobe.c                         [2] Stefano Sabatini
 
 Commandline utility code:
   cmdutils.c, cmdutils.h                Michael Niedermayer
@@ -53,11 +53,11 @@ Communication
 website                                 Deby Barbara Lepage
 fate.ffmpeg.org                         Timothy Gu
 Trac bug tracker                        Alexander Strasser, Michael Niedermayer, Carl Eugen Hoyos
-Patchwork                               Andriy Gelman
+Patchwork                           [2] Andriy Gelman
 mailing lists                           Baptiste Coudurier
 Twitter                                 Reynaldo H. Verdejo Pinochet
 Launchpad                               Timothy Gu
-ffmpeg-security                         Andreas Cadhalpun, Carl Eugen Hoyos, Clément Bœsch, Michael Niedermayer, Reimar Doeffinger, rcombs, wm4
+ffmpeg-security                     [2] Michael Niedermayer, Reimar Doeffinger
 
 
 libavutil
@@ -74,22 +74,22 @@ Other:
   bswap.h
   des                                   Reimar Doeffinger
   dynarray.h                            Nicolas George
-  eval.c, eval.h                        Michael Niedermayer
+  eval.c, eval.h                    [2] Michael Niedermayer
   float_dsp                             Loren Merritt
   hash                                  Reimar Doeffinger
   hwcontext_cuda*                       Timo Rothenpieler
-  hwcontext_vulkan*                     Lynne
+  hwcontext_vulkan*                 [2] Lynne
   intfloat*                             Michael Niedermayer
   integer.c, integer.h                  Michael Niedermayer
   lzo                                   Reimar Doeffinger
-  mathematics.c, mathematics.h          Michael Niedermayer
-  mem.c, mem.h                          Michael Niedermayer
+  mathematics.c, mathematics.h      [2] Michael Niedermayer
+  mem.c, mem.h                      [2] Michael Niedermayer
   opencl.c, opencl.h                    Wei Gao
   opt.c, opt.h                          Michael Niedermayer
-  rational.c, rational.h                Michael Niedermayer
+  rational.c, rational.h            [2] Michael Niedermayer
   rc4                                   Reimar Doeffinger
   ripemd.c, ripemd.h                    James Almer
-  tx*                                   Lynne
+  tx*                               [2] Lynne
 
 
 libavcodec
@@ -114,17 +114,17 @@ Generic Parts:
     rangecoder.c, rangecoder.h          Michael Niedermayer
     lzw.*                               Michael Niedermayer
   floating point AAN DCT:
-    faandct.c, faandct.h                Michael Niedermayer
+    faandct.c, faandct.h            [2] Michael Niedermayer
   Golomb coding:
-    golomb.c, golomb.h                  Michael Niedermayer
+    golomb.c, golomb.h              [2] Michael Niedermayer
   motion estimation:
     motion*                             Michael Niedermayer
   rate control:
-    ratecontrol.c                       Michael Niedermayer
+    ratecontrol.c                   [2] Michael Niedermayer
   simple IDCT:
-    simple_idct.c, simple_idct.h        Michael Niedermayer
+    simple_idct.c, simple_idct.h    [2] Michael Niedermayer
   postprocessing:
-    libpostproc/*                       Michael Niedermayer
+    libpostproc/*                   [2] Michael Niedermayer
   table generation:
     tableprint.c, tableprint.h          Reimar Doeffinger
   fixed point FFT:
@@ -132,7 +132,7 @@ Generic Parts:
   Text Subtitles                        Clément Bœsch
 
 Codecs:
-  4xm.c                                 Michael Niedermayer
+  4xm.c                             [2] Michael Niedermayer
   8bps.c                                Roberto Togni
   8svx.c                                Jaikrishnan Menon
   aacenc*, aaccoder.c                   Rostislav Pehlivanov
@@ -168,7 +168,7 @@ Codecs:
   dvbsubdec.c                           Anshul Maheshwari
   eacmv*, eaidct*, eat*                 Peter Ross
   exif.c, exif.h                        Thilo Borgmann
-  ffv1*                                 Michael Niedermayer
+  ffv1*                             [2] Michael Niedermayer
   ffwavesynth.c                         Nicolas George
   fifo.c                                Jan Sebechlebsky
   flicvideo.c                           Mike Melanson
@@ -255,7 +255,7 @@ Codecs:
   vp8                                   David Conrad, Ronald Bultje
   vp9                                   Ronald Bultje
   vqavideo.c                            Mike Melanson
-  vvc                                   Nuo Mi
+  vvc                               [2] Nuo Mi
   wmaprodec.c                           Sascha Sommer
   wmavoice.c                            Ronald S. Bultje
   wmv2.c                                Michael Niedermayer
@@ -330,12 +330,12 @@ Filters:
   vf_mestimate.c                        Davinder Singh
   vf_minterpolate.c                     Davinder Singh
   vf_readvitc.c                         Tobias Rapp (CC t.rapp at noa-archive dot com)
-  vf_scale.c                            Michael Niedermayer
+  vf_scale.c                        [2] Michael Niedermayer
   vf_tonemap_opencl.c                   Ruiling Song
-  vf_yadif.c                            Michael Niedermayer
+  vf_yadif.c                        [2] Michael Niedermayer
 
 Sources:
-  vsrc_mandelbrot.c                     Michael Niedermayer
+  vsrc_mandelbrot.c                 [2] Michael Niedermayer
 
 dnn                                     Yejun Guo
 
@@ -481,27 +481,27 @@ libswresample
 =============
 
 Generic parts:
-  audioconvert.c                        Michael Niedermayer
-  dither.c                              Michael Niedermayer
-  rematrix*.c                           Michael Niedermayer
-  swresample*.c                         Michael Niedermayer
+  audioconvert.c                    [2] Michael Niedermayer
+  dither.c                          [2] Michael Niedermayer
+  rematrix*.c                       [2] Michael Niedermayer
+  swresample*.c                     [2] Michael Niedermayer
 
 Resamplers:
-  resample*.c                           Michael Niedermayer
+  resample*.c                       [2] Michael Niedermayer
   soxr_resample.c                       Rob Sykes
 
 
 Operating systems / CPU architectures
 =====================================
 
-*BSD                                    Brad Smith
-Alpha                                   Falk Hueffner
+*BSD                                [2] Brad Smith
+Alpha                               [0]
 MIPS                                    Manojkumar Bhosale, Shiyou Yin
-LoongArch                               Shiyou Yin
+LoongArch                           [2] Shiyou Yin
 Mac OS X / PowerPC                      Romain Dolbeau, Guillaume Poirier
 Amiga / PowerPC                         Colin Ward
 Linux / PowerPC                         Lauri Kasanen
-RISC-V                                  Rémi Denis-Courmont
+RISC-V                              [2] Rémi Denis-Courmont
 Windows MinGW                           Alex Beregszaszi, Ramiro Polla
 Windows Cygwin                          Victor Paesa
 Windows MSVC                            Hendrik Leppkes
-- 
2.45.2

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[FFmpeg-devel] [PATCH 3/5] avcodec/wmavoice: Do not use uninitialized pitch[0]

[Michael Niedermayer]

Fixes: use of uninitialized value
Fixes: 70850/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMAVOICE_fuzzer-4806127362048000

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/wmavoice.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavcodec/wmavoice.c b/libavcodec/wmavoice.c
index 3db73773b77..39868e02b3c 100644
--- a/libavcodec/wmavoice.c
+++ b/libavcodec/wmavoice.c
@@ -1506,6 +1506,8 @@ static int synth_frame(AVCodecContext *ctx, GetBitContext *gb, int frame_idx,
     /* Parse frame type ("frame header"), see frame_descs */
     int bd_idx = s->vbm_tree[get_vlc2(gb, frame_type_vlc, 6, 3)], block_nsamples;
 
+    pitch[0] = INT_MAX;
+
     if (bd_idx < 0) {
         av_log(ctx, AV_LOG_ERROR,
                "Invalid frame type VLC code, skipping\n");
@@ -1623,6 +1625,9 @@ static int synth_frame(AVCodecContext *ctx, GetBitContext *gb, int frame_idx,
         double i_lsps[MAX_LSPS];
         float lpcs[MAX_LSPS];
 
+        if(frame_descs[bd_idx].fcb_type >= FCB_TYPE_AW_PULSES && pitch[0] == INT_MAX)
+            return AVERROR_INVALIDDATA;
+
         for (n = 0; n < s->lsps; n++) // LSF -> LSP
             i_lsps[n] = cos(0.5 * (prev_lsps[n] + lsps[n]));
         ff_acelp_lspd2lpc(i_lsps, lpcs, s->lsps >> 1);
-- 
2.45.2

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[FFmpeg-devel] [PATCH 4/5] avformat/mvdec: Check if name was fully read

[Michael Niedermayer]

Fixes: use of uninitialized value
Fixes: 70901/clusterfuzz-testcase-minimized-ffmpeg_dem_MV_fuzzer-6341913949569024

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavformat/mvdec.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/mvdec.c b/libavformat/mvdec.c
index 0718f0483a7..c045d2c7c8e 100644
--- a/libavformat/mvdec.c
+++ b/libavformat/mvdec.c
@@ -256,7 +256,8 @@ static int read_table(AVFormatContext *avctx, AVStream *st,
         if (avio_feof(pb))
             return AVERROR_EOF;
 
-        avio_read(pb, name, 16);
+        if (avio_read(pb, name, 16) != 16)
+            return AVERROR_INVALIDDATA;
         name[sizeof(name) - 1] = 0;
         size = avio_rb32(pb);
         if (size < 0) {
-- 
2.45.2

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[FFmpeg-devel] [PATCH 5/5] avcodec/msmpeg4dec: init dc_pred_dir

[Michael Niedermayer]

Its not really used but its passed as a argument and then not used
Fixes: 70965/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MSMPEG4V1_fuzzer-5583223747313664

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/msmpeg4dec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/msmpeg4dec.c b/libavcodec/msmpeg4dec.c
index 31b17c2839e..12bef4f5066 100644
--- a/libavcodec/msmpeg4dec.c
+++ b/libavcodec/msmpeg4dec.c
@@ -628,7 +628,7 @@ int ff_msmpeg4_decode_block(MpegEncContext * s, int16_t * block,
                               int n, int coded, const uint8_t *scan_table)
 {
     int level, i, last, run, run_diff;
-    int av_uninit(dc_pred_dir);
+    int dc_pred_dir = -1; //unused but its passed around, so it needs to be initialized
     const RLTable *rl;
     const RL_VLC_ELEM *rl_vlc;
     int qmul, qadd;
-- 
2.45.2

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Re: [FFmpeg-devel] [PATCH 2/5] MAINTAINERS: some random updating

[Gyan Doshi]

On 2024-08-15 04:07 am, Michael Niedermayer wrote:
> Adding level to some of my entries
> Adding level to some random entries of other people who i have seen actively maintaining their code
> removing some people who have not been active where others where active
>
> For most we will need to contact people and ask if they are still available as maintainers
> (but for cases where patches are ignored for many months even with pings sent to the maintainer
>   entries should be set to unmaintained)
>
> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> ---
>   MAINTAINERS | 60 ++++++++++++++++++++++++++---------------------------
>   1 file changed, 30 insertions(+), 30 deletions(-)
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index a27116e9d15..94d9b04d249 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -23,10 +23,10 @@ ffmpeg:
>     ffmpeg.c                              Michael Niedermayer, Anton Khirnov
>   
>   ffplay:
> -  ffplay.c                              Marton Balint
> +  ffplay.c                          [2] Marton Balint
>   
>   ffprobe:
> -  ffprobe.c                             Stefano Sabatini
> +  ffprobe.c                         [2] Stefano Sabatini
>   
>   Commandline utility code:
>     cmdutils.c, cmdutils.h                Michael Niedermayer
> @@ -53,11 +53,11 @@ Communication
>   website                                 Deby Barbara Lepage
>   fate.ffmpeg.org                         Timothy Gu
>   Trac bug tracker                        Alexander Strasser, Michael Niedermayer, Carl Eugen Hoyos
> -Patchwork                               Andriy Gelman
> +Patchwork                           [2] Andriy Gelman
>   mailing lists                           Baptiste Coudurier
>   Twitter                                 Reynaldo H. Verdejo Pinochet
>   Launchpad                               Timothy Gu
> -ffmpeg-security                         Andreas Cadhalpun, Carl Eugen Hoyos, Clément Bœsch, Michael Niedermayer, Reimar Doeffinger, rcombs, wm4
> +ffmpeg-security                     [2] Michael Niedermayer, Reimar Doeffinger

Does the status apply to just you or all listed? The notation is ambiguous.

Regards,
Gyan

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Re: [FFmpeg-devel] [PATCH 2/5] MAINTAINERS: some random updating

[Michael Niedermayer]

[-- Attachment #1.1: Type: text/plain, Size: 2801 bytes --]

On Thu, Aug 15, 2024 at 12:09:51PM +0530, Gyan Doshi wrote:
> 
> 
> On 2024-08-15 04:07 am, Michael Niedermayer wrote:
> > Adding level to some of my entries
> > Adding level to some random entries of other people who i have seen actively maintaining their code
> > removing some people who have not been active where others where active
> > 
> > For most we will need to contact people and ask if they are still available as maintainers
> > (but for cases where patches are ignored for many months even with pings sent to the maintainer
> >   entries should be set to unmaintained)
> > 
> > Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> > ---
> >   MAINTAINERS | 60 ++++++++++++++++++++++++++---------------------------
> >   1 file changed, 30 insertions(+), 30 deletions(-)
> > 
> > diff --git a/MAINTAINERS b/MAINTAINERS
> > index a27116e9d15..94d9b04d249 100644
> > --- a/MAINTAINERS
> > +++ b/MAINTAINERS
> > @@ -23,10 +23,10 @@ ffmpeg:
> >     ffmpeg.c                              Michael Niedermayer, Anton Khirnov
> >   ffplay:
> > -  ffplay.c                              Marton Balint
> > +  ffplay.c                          [2] Marton Balint
> >   ffprobe:
> > -  ffprobe.c                             Stefano Sabatini
> > +  ffprobe.c                         [2] Stefano Sabatini
> >   Commandline utility code:
> >     cmdutils.c, cmdutils.h                Michael Niedermayer
> > @@ -53,11 +53,11 @@ Communication
> >   website                                 Deby Barbara Lepage
> >   fate.ffmpeg.org                         Timothy Gu
> >   Trac bug tracker                        Alexander Strasser, Michael Niedermayer, Carl Eugen Hoyos
> > -Patchwork                               Andriy Gelman
> > +Patchwork                           [2] Andriy Gelman
> >   mailing lists                           Baptiste Coudurier
> >   Twitter                                 Reynaldo H. Verdejo Pinochet
> >   Launchpad                               Timothy Gu
> > -ffmpeg-security                         Andreas Cadhalpun, Carl Eugen Hoyos, Clément Bœsch, Michael Niedermayer, Reimar Doeffinger, rcombs, wm4
> > +ffmpeg-security                     [2] Michael Niedermayer, Reimar Doeffinger
> 
> Does the status apply to just you or all listed? The notation is ambiguous.

its meant to be the overall status of how maintained the subsystem is, not
how active each person is

that is if its [0] we need/want a new developer to come in while with [2]
one can expect theres someone taking care of it within
reasonable time/availability/some (personal) pinging

thx

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

No snowflake in an avalanche ever feels responsible. -- Voltaire

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