Changeset b0b3bea1 in ffmpeg

Timestamp:

Jul 28, 2024, 6:24:12 PM (4 months ago)

Author:

Rémi Denis-Courmont <remi@remlab.net>

Branches:

master

Children:

39ced529

Parents:

4713a5cc

git-author:

Rémi Denis-Courmont <remi@remlab.net> (07/25/24 17:47:34)

git-committer:

Rémi Denis-Courmont <remi@remlab.net> (07/28/24 18:24:12)

Message:

lavc/h264dsp: use saturing add/sub for R-V V 8-bit DC add

T-Head C908 (cycles):
h264_idct4_dc_add_8bpp_c: 109.2
h264_idct4_dc_add_8bpp_rvv_i32: 34.5 (before)
h264_idct4_dc_add_8bpp_rvv_i32: 25.5 (after)
h264_idct8_dc_add_8bpp_c: 418.7
h264_idct8_dc_add_8bpp_rvv_i64: 69.5 (before)
h264_idct8_dc_add_8bpp_rvv_i64: 33.5 (after)

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