On Sat, Sep 17, 2022 at 11:15:56PM +0200, Michael Niedermayer wrote:
> Fixes: signed integer overflow: 538976288 * 4 cannot be represented in type
> 'int'
> Fixes:
> 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_ICO_fuzzer-6690068904935424
>
> Found-by: continuous fuzzing process
> https://gi
On Sat, 17 Sep 2022 21:13:37 +0200
Michael Niedermayer wrote:
> > ---
> > libavutil/pixdesc.c | 31 +++-
> > libavutil/pixdesc.h | 15 ++--
> > libavutil/tests/pixfmt_best.c | 129
> > +- tests/ref/fate/pixfmt_best|
> > 2 +- 4 files c
Since introducing the various packed formats used by VAAPI (and p012),
we've noticed that there's actually a gap in how
av_find_best_pix_fmt_of_2 works. It doesn't actually assign any value
to having the same bit depth as the source format, when comparing
against formats with a higher bit depth. Th
Fixes: signed integer overflow: -1155522528 * 4 cannot be represented in type
'int'
Fixes:
50993/clusterfuzz-testcase-minimized-ffmpeg_dem_APM_fuzzer-6580670570299392
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niede
Fixes:
50993/clusterfuzz-testcase-minimized-ffmpeg_dem_JACOSUB_fuzzer-6722544461283328
Fixes: signed integer overflow: 48214448 * 60 cannot be represented in type
'int'
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Nie
Fixes: signed integer overflow: 538976288 * 4 cannot be represented in type
'int'
Fixes:
50993/clusterfuzz-testcase-minimized-ffmpeg_dem_ICO_fuzzer-6690068904935424
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niederm
The check could be made more strict
Fixes: signed integer overflow: 36 * 538976288 cannot be represented in type
'int'
Fixes:
50993/clusterfuzz-testcase-minimized-ffmpeg_dem_GENH_fuzzer-6539389873815552
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/project
Fixes: signed integer overflow: 2147483647 + 32 cannot be represented in type
'int'
Fixes:
50993/clusterfuzz-testcase-minimized-ffmpeg_dem_DXA_fuzzer-6639823726706688
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niede
Fixes: signed integer overflow: 1099511693312 * 538976288 cannot be represented
in type 'long'
Fixes:
50993/clusterfuzz-testcase-minimized-ffmpeg_dem_CAF_fuzzer-6565048815845376
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Mi
avoids overflows with it
Fixes: signed integer overflow: 9223372036846866010 + 4294967047 cannot be
represented in type 'long'
Fixes:
50993/clusterfuzz-testcase-minimized-ffmpeg_dem_ASF_O_fuzzer-6538296768987136
Fixes:
50993/clusterfuzz-testcase-minimized-ffmpeg_dem_ASF_O_fuzzer-657169555665715
Fixes: negation of -2147483648 cannot be represented in type 'int'; cast to an
unsigned type to negate this value to itself
Fixes:
50993/clusterfuzz-testcase-minimized-ffmpeg_dem_DHAV_fuzzer-6604736532447232
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/pro
Fixes: signed integer overflow: 9223372036854775806 + 3 cannot be represented
in type 'long'
Fixes:
50993/clusterfuzz-testcase-minimized-ffmpeg_dem_APE_fuzzer-6389264140599296
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Mich
On Fri, Sep 16, 2022 at 06:44:06PM -0700, Philip Langdale wrote:
> Since introducing the various packed formats used by VAAPI (and p012),
> we've noticed that there's actually a gap in how
> av_find_best_pix_fmt_of_2 works. It doesn't actually assign any value
> to having the same bit depth as the
Ping
--
Rémi Denis-Courmont
http://www.remlab.net/
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Ping...
--
Rémi Denis-Courmont
http://www.remlab.net/
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These changes are from MythTV.
---
The `AV_CODEC_ID`s are probably in the wrong place since these are
data codecs, but that is where they are In MythTV.
There was also a related change to libavformat/demux.c's
avformat_find_stream_info() trying to optimize it for MHEG streams,
but it is unnecessa
On Sat, Sep 17, 2022 at 7:43 AM Michael Niedermayer
wrote:
>
> On Fri, Sep 16, 2022 at 01:19:09PM -0700, Pierre-Anthony Lemieux wrote:
> > On Fri, Sep 16, 2022 at 1:15 PM Michael Niedermayer
> > wrote:
> > >
> > > On Fri, Sep 16, 2022 at 10:39:22AM -0700, Pierre-Anthony Lemieux wrote:
> > > > On
Ping. Any comments on the updated patch?
On Tue, Sep 13, 2022 at 9:46 AM Li-Heng Chen wrote:
>
> On Tue, Sep 13, 2022 at 4:40 AM Paul B Mahol wrote:
> >
> > On 9/11/22, Li-Heng Chen wrote:
> > > When input is video bitstream (e.g. *.264) with framerate set by -r,
> > > ist->pts could be a nonse
On 9/17/22, Michael Niedermayer wrote:
> Fixes: signed integer overflow: 3 * -2147483648 cannot be represented in
> type 'int'
> Fixes:
> 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_AIFF_fuzzer-6668935979728896
>
> Found-by: continuous fuzzing process
> https://github.com/google/oss-fuzz/tree/
On 9/17/22, Michael Niedermayer wrote:
> Fixes: signed integer overflow: 3 * -2147483648 cannot be represented in
> type 'int'
> Fixes:
> 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_AIFF_fuzzer-6668935979728896
>
> Found-by: continuous fuzzing process
> https://github.com/google/oss-fuzz/tree/
On Fri, Sep 16, 2022 at 01:19:09PM -0700, Pierre-Anthony Lemieux wrote:
> On Fri, Sep 16, 2022 at 1:15 PM Michael Niedermayer
> wrote:
> >
> > On Fri, Sep 16, 2022 at 10:39:22AM -0700, Pierre-Anthony Lemieux wrote:
> > > On Fri, Sep 16, 2022 at 10:27 AM Michael Niedermayer
> > > wrote:
> > > >
>
Fixes: signed integer overflow: 3 * -2147483648 cannot be represented in type
'int'
Fixes:
50993/clusterfuzz-testcase-minimized-ffmpeg_dem_AIFF_fuzzer-6668935979728896
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Nied
Fixes: signed integer overflow: 3 * -2147483648 cannot be represented in type
'int'
Fixes:
50993/clusterfuzz-testcase-minimized-ffmpeg_dem_AIFF_fuzzer-6668935979728896
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Nied
From: Rémi Denis-Courmont
RV64G supports MIN & MAX instructions natively only on floating point
registers, not general purpose ones. The later would require the Zbb
extension. Due to that, it is actually faster to perform the clipping
"properly" in FPU.
Benchmarked on SiFive U74-MC:
audiodsp.ve
From: Rémi Denis-Courmont
---
libavutil/riscv/asm.S | 74 +++
1 file changed, 74 insertions(+)
create mode 100644 libavutil/riscv/asm.S
diff --git a/libavutil/riscv/asm.S b/libavutil/riscv/asm.S
new file mode 100644
index 00..7623c161cf
--- /dev/
From: Rémi Denis-Courmont
Benchmarks:
get_pixels_c: 180.0
get_pixels_rvi: 136.7
---
libavcodec/pixblockdsp.c| 2 +
libavcodec/pixblockdsp.h| 2 +
libavcodec/riscv/Makefile | 2 +
libavcodec/riscv/pixblockdsp_init.c | 43 ++
libavcodec/risc
From: Rémi Denis-Courmont
---
Makefile | 2 +-
configure| 15 +++
ffbuild/arch.mak | 2 ++
3 files changed, 18 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
index 61f79e27ae..1fb742f390 100644
--- a/Makefile
+++ b/Makefile
@@ -91,7 +91,7 @@ ffbuild/
From: Rémi Denis-Courmont
RVV defines a total of 12 different extensions, including:
- 5 different instruction subsets:
- Zve32x: 8-, 16- and 32-bit integers,
- Zve32f: Zve32x plus single precision floats,
- Zve64x: Zve32x plus 64-bit integers,
- Zve64f: Zve32f plus Zve64x,
- Zve64d: Z
From: Rémi Denis-Courmont
This introduces compile-time and run-time CPU detection on RISC-V. In
practice, I doubt that FFmpeg will ever see a RISC-V CPU without all of
I, F and D extensions, and if it does, it probably won't have run-time
detection. So the flags are essentially always set.
But a
Hi,
This adds configure, compile-time, run-time detection for RISC-V scalar
and vector extensions. Also a couple of scalar optimisations.
Rémi Denis-Courmont (6):
lavu/cpu: detect RISC-V base extensions
lavu/cpu:
Patch attached.
From 5be1fbb848b50e02d302873653e94ed77dea861c Mon Sep 17 00:00:00 2001
From: Paul B Mahol
Date: Sat, 17 Sep 2022 14:08:58 +0200
Subject: [PATCH] avcodec/mlpdec: relax channels checking
Internal TrueHD decoder channel rematrix can mix 2 stereo substreams
into single mono stream.
F
r...@remlab.net:
> From: Rémi Denis-Courmont
>
> While this probably never overflows, we are better safe than sorry.
>
> The callback prototype should probably also use ptrdiff_t or size_t but
> I diggress.
> ---
> libavcodec/vorbisdec.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
r...@remlab.net:
> From: Rémi Denis-Courmont
>
> The compiler cannot infer that the two float vectors do not alias,
> causing unnecessary extra loads and serialisation. This patch caches
> the two input values in local variables so that compiler can optimise
> individual loop iterations.
> ---
W
From: Rémi Denis-Courmont
While this probably never overflows, we are better safe than sorry.
The callback prototype should probably also use ptrdiff_t or size_t but
I diggress.
---
libavcodec/vorbisdec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/vorbisdec.
From: Rémi Denis-Courmont
The compiler cannot infer that the two float vectors do not alias,
causing unnecessary extra loads and serialisation. This patch caches
the two input values in local variables so that compiler can optimise
individual loop iterations.
---
libavcodec/vorbisdec.c | 22
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