The fixed point decoder needs it since
905fdb0601.
Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This adds the Linux-specific function call to detect CPU features. Unlike
the more portable auxillary vector, this supports extensions other than
single lettered ones. At this point, FFmpeg already needs this to detect
Zba and Zbb at run-time, and probably will need it for Zvbb in the near
future.
Support will be available in glibc 2.40 onward.
For some error bitstreams, a CTU belongs to two slices/entry points.
If the decoder initializes and submmits the CTU task twice, it may crash the program
or cause it to enter an infinite loop.
Reported-by: Frank Plowman <post@frankplowman.com>
Fixes: signed integer overflow: 2097152000 + 107142979 cannot be represented in type 'int'
Fixes: 67919/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WAVARC_fuzzer-5955101769400320
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes: signed integer overflow: -1082982400 + -1079364728 cannot be represented in type 'int'
Fixes: 67910/clusterfuzz-testcase-minimized-ffmpeg_SWS_fuzzer-5329011971522560
The input is 9bit in 16bit, the fuzzer fills all 16bit thus generating "invalid" input
No overflow should happen with valid input.
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes: signed integer overflow: -831176 * 9539 cannot be represented in type 'int'
Fixes: 67869/clusterfuzz-testcase-minimized-ffmpeg_SWS_fuzzer-5117342091640832
The input is 9bit in 16bit, the fuzzer fills all 16bit thus generating "invalid" input
No overflow should happen with valid input.
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
sc->data_size may contain the size of a single fragment after probing, and
using it alongside the duration of the entire stream to calculate bitrate
will result in a bogus small value.
Before:
Duration: 00:00:05.00, start: 0.000000, bitrate: 586 kb/s
Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 640x360 [SAR 1:1 DAR 16:9], 112 kb/s, 60 fps, 60 tbr, 15360 tbn (default)
After:
Duration: 00:00:05.00, start: 0.000000, bitrate: 586 kb/s
Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 640x360 [SAR 1:1 DAR 16:9], 561 kb/s, 60 fps, 60 tbr, 15360 tbn (default)
Signed-off-by: James Almer <jamrial@gmail.com>
Both the codecpar's width and height, and the SAR num and den are
ints, which can overflow. Cast to int64_t, which is what av_reduce
takes.
Without this, occasionally, display_aspect_ratio can be negative in
ffprobe's -show_stream output.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
This filter needs to be marked as having only one input by default, with
AVFILTER_FLAG_DYNAMIC_INPUTS allowing the extra input to be added at
init() time.
Fixes: bb80445813
Clarify comment regarding type of integers regarding AV_OPT_TYPE_IMAGE_SIZE.
Signed-off-by: Marcus B Spencer <marcus@marcusspencer.xyz>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This is similar to h264, but here we use manual_avg instead of vaaddu
because rv40's OP differs from h264. If we use vaaddu,
rv40 would need to repeatedly switch between vxrm=0 and vxrm=2,
and switching vxrm is very slow.
C908:
avg_chroma_mc4_c: 2330.0
avg_chroma_mc4_rvv_i32: 602.7
avg_chroma_mc8_c: 1211.0
avg_chroma_mc8_rvv_i32: 602.7
put_chroma_mc4_c: 1825.0
put_chroma_mc4_rvv_i32: 414.7
put_chroma_mc8_c: 932.0
put_chroma_mc8_rvv_i32: 414.7
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>
As we do not need to widen accumulators to 64 bits, we effectively get
double capacity for unrolling compared to the integer function. This
explains the slightly better performance gains.
ac3_sum_square_bufferfly_float_c: 65.2
ac3_sum_square_bufferfly_float_rvv_f32: 12.2
This is automatically enabled if the width/height expressions reference
any ref_* variable. This will ultimately serve as a more principled
replacement for the fundamentally broken scale2ref.
See-Also: https://trac.ffmpeg.org/ticket/10795
Fixes: CID1544265 Logically dead code
Sponsored-by: Sovereign Tech Fund
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
