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${ noResults }
7 Commits (dd1c67d5393303ad23ba8cb494ddb17a2c1a002b)
| Author | SHA1 | Message | Date |
|---|---|---|---|
Rémi Denis-Courmont
|
04d092e7d5 |
lavc/audiodsp: RISC-V F vector_clipf
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. Benchmarks on SiFive U74-MC (courtesy of Shanghai StarFive Tech): audiodsp.vector_clipf_c: 29551.5 audiodsp.vector_clipf_rvf: 17871.0 Also tried unrolling with 2 or 8 elements but it gets worse either way. |
2 years ago |
Andreas Rheinhardt
|
40e6575aa3 |
all: Replace if (ARCH_FOO) checks by #if ARCH_FOO
This is more spec-compliant because it does not rely on dead-code elimination by the compiler. Especially MSVC has problems with this, as can be seen in https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/296373.html or https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/297022.html This commit does not eliminate every instance where we rely on dead code elimination: It only tackles branching to the initialization of arch-specific dsp code, not e.g. all uses of CONFIG_ and HAVE_ checks. But maybe it is already enough to compile FFmpeg with MSVC with whole-programm-optimizations enabled (if one does not disable too many components). Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com> |
2 years ago |
Michael Niedermayer
|
abb5762e98 |
avcodec/audiodsp: Fix integer overflow in scalarproduct_int16_c()
Fixes: signed integer overflow: 2145417478 + 76702564 cannot be represented in type 'int' Fixes: 20313/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RA_144_fuzzer-5734487724130304 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> |
5 years ago |
Anton Khirnov
|
683da86aab |
audiodsp: reorder arguments for vector_clipf
This will make the x86 asm simpler. ARM conversion by Martin Storsjö <martin@martin.st> and Janne Grunau <janne-libav@jannau.net> |
8 years ago |
Diego Biurrun
|
9a9e2f1c8a |
dsputil: Split audio operations off into a separate context
|
11 years ago |