[FFmpeg-devel] [PATCH 0/3] RISC-V V Opus post-filter

[Rémi Denis-Courmont]

	Hello,

This adds the Opus post-filter. Opus deemphasis is not included as it (IMHO)
involves too many unknowns to write a good implementation without
benchmarking.

This post-filter implementation merely vectors the scalar product. It does
purposed not vector the memory accesses to avoid reconfiguring the vector unit
too often. It might be possible to work it out, but again, I cannot really
tell without real hardware

The following changes since commit b0c7352cd494c88d33f032be60b5e1c4e8b092a0:

  avcodec/mjpegdec: Fix compilation (2022-09-30 19:30:29 +0200)

are available in the Git repository at:

  git.remlab.net:git/ffmpeg.git rvv-vtype

for you to fetch changes up to 1aa3efa0563aaaed376a35c0e7c9fe53089c3a7e:

  lavc/opusdsp: RISC-V V (256-bit vectors) postfilter (2022-10-01 15:24:42 +0300)

----------------------------------------------------------------
Rémi Denis-Courmont (4):
      QEMU hack
      lavc/opusdsp: RISC-V V postfilter
      lavu/riscv: helper macro for VTYPE encoding
      lavc/opusdsp: RISC-V V (256-bit vectors) postfilter

 libavcodec/opusdsp.c            |  2 ++
 libavcodec/opusdsp.h            |  1 +
 libavcodec/riscv/Makefile       |  2 ++
 libavcodec/riscv/opusdsp_init.c | 49 +++++++++++++++++++++++++++
 libavcodec/riscv/opusdsp_rvv.S  | 59 ++++++++++++++++++++++++++++++++
 libavutil/riscv/asm.S           | 75 +++++++++++++++++++++++++++++++++++++++++
 libavutil/riscv/cpu.c           |  2 +-
 7 files changed, 189 insertions(+), 1 deletion(-)
 create mode 100644 libavcodec/riscv/opusdsp_init.c
 create mode 100644 libavcodec/riscv/opusdsp_rvv.S

-- 
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