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authorRémi Denis-Courmont <remi@remlab.net>2024-07-11 22:01:25 +0300
committerRémi Denis-Courmont <remi@remlab.net>2024-07-14 21:06:50 +0300
commitc654e37254efb6de5d3f1355dd7936979dd0dca3 (patch)
tree7db84abc0077bcc19937c12e6fcc3b369026fd8f /libavcodec/arm/vp9lpf_16bpp_neon.S
parent80ddc727178837a5ea5e6e463f28fedf6c1051dd (diff)
downloadffmpeg-c654e37254efb6de5d3f1355dd7936979dd0dca3.tar.gz
lavc/h264dsp: R-V V high-depth h264_idct8_add
Unlike the 8-bit version, we need two iterations to process this within 128-bit vectors. This adds some extra complexity for pointer arithmetic and counting down which is unnecessary in the 8-bit variant. Accordingly the gain relative to C are just slight better than half as good with 128-bit vectors as with 256-bit ones. T-Head C908 (2 iterations): h264_idct8_add_9bpp_c: 17.5 h264_idct8_add_9bpp_rvv_i32: 10.0 h264_idct8_add_10bpp_c: 17.5 h264_idct8_add_10bpp_rvv_i32: 9.7 h264_idct8_add_12bpp_c: 17.7 h264_idct8_add_12bpp_rvv_i32: 9.7 h264_idct8_add_14bpp_c: 17.7 h264_idct8_add_14bpp_rvv_i32: 9.7 SpacemiT X60 (single iteration): h264_idct8_add_9bpp_c: 15.2 h264_idct8_add_9bpp_rvv_i32: 5.0 h264_idct8_add_10bpp_c: 15.2 h264_idct8_add_10bpp_rvv_i32: 5.0 h264_idct8_add_12bpp_c: 14.7 h264_idct8_add_12bpp_rvv_i32: 5.0 h264_idct8_add_14bpp_c: 14.7 h264_idct8_add_14bpp_rvv_i32: 4.7
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