ffmpeg | branch: master | Rémi Denis-Courmont <r...@remlab.net> | Sun Sep 1 16:31:13 2024 +0300| [459a1512f13ae1fdd404ff9281b02d225ac70a09] | committer: Rémi Denis-Courmont
lavc/h264dsp: unroll R-V V weight16 As VLSE128.V does not exist, we have no other way to deal with latency. T-Head C908: h264_weight16_8_c: 989.4 ( 1.00x) h264_weight16_8_rvv_i32: 193.2 ( 5.12x) SpacemiT X60: h264_weight16_8_c: 874.1 ( 1.00x) h264_weight16_8_rvv_i32: 196.9 ( 4.44x) > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=459a1512f13ae1fdd404ff9281b02d225ac70a09 --- libavcodec/riscv/h264dsp_init.c | 2 +- libavcodec/riscv/h264dsp_rvv.S | 21 +++++++++++++++------ 2 files changed, 16 insertions(+), 7 deletions(-) diff --git a/libavcodec/riscv/h264dsp_init.c b/libavcodec/riscv/h264dsp_init.c index 6391667a40..643673d1d6 100644 --- a/libavcodec/riscv/h264dsp_init.c +++ b/libavcodec/riscv/h264dsp_init.c @@ -97,7 +97,7 @@ av_cold void ff_h264dsp_init_riscv(H264DSPContext *dsp, const int bit_depth, const bool zvl128b = ff_rv_vlen_least(128); if (bit_depth == 8) { - if (zvl128b) + if (zvl128b && (flags & AV_CPU_FLAG_RVB)) dsp->weight_h264_pixels_tab[0] = ff_h264_weight_funcs_8_rvv[0].weight; if (flags & AV_CPU_FLAG_RVV_I64) diff --git a/libavcodec/riscv/h264dsp_rvv.S b/libavcodec/riscv/h264dsp_rvv.S index b081e156a0..464c880d4b 100644 --- a/libavcodec/riscv/h264dsp_rvv.S +++ b/libavcodec/riscv/h264dsp_rvv.S @@ -29,20 +29,29 @@ #include "libavutil/riscv/asm.S" .variant_cc ff_h264_weight_pixels_simple_8_rvv -func ff_h264_weight_pixels_simple_8_rvv, zve32x +func ff_h264_weight_pixels_simple_8_rvv, zve32x, b csrwi vxrm, 0 sll a5, a5, a3 1: vsetvli zero, t6, e16, m2, ta, ma - vle8.v v8, (a0) - addi a2, a2, -1 + add t0, a0, a1 + vle8.v v8, (a0) + addi a2, a2, -2 + vle8.v v9, (t0) vzext.vf2 v24, v8 + vzext.vf2 v26, v9 vmul.vx v16, v24, a4 + vmul.vx v18, v26, a4 vsadd.vx v16, v16, a5 - vmax.vx v16, v16, zero - vsetvli zero, zero, e8, m1, ta, ma + vsadd.vx v18, v18, a5 + vmax.vx v16, v16, zero + vmax.vx v18, v18, zero + vsetvli zero, zero, e8, m1, ta, ma vnclipu.wx v8, v16, a3 - vse8.v v8, (a0) + vnclipu.wx v9, v18, a3 + vse8.v v8, (a0) + vse8.v v9, (t0) + sh1add a0, a1, a0 add a0, a0, a1 bnez a2, 1b _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
