diff options
| author | Rémi Denis-Courmont <remi@remlab.net> | 2024-07-30 20:29:02 +0300 |
|---|---|---|
| committer | Rémi Denis-Courmont <remi@remlab.net> | 2024-08-02 21:24:01 +0300 |
| commit | 677f28b310ac8cbf96e3a02865c2aff49c6950ff (patch) | |
| tree | 83b207389f2e95d97754b11b96c349861d54c280 | |
| parent | afd45c7ff74cc947d427202c1e9adc9ddc1987f8 (diff) | |
| download | ffmpeg-677f28b310ac8cbf96e3a02865c2aff49c6950ff.tar.gz | |
lavc/h264dsp: stick R-V V weight to 16-bit precision
T-Head C908 (ns):
h264_weight2_8_c: 1607.8
h264_weight2_8_rvv_i32: 515.0 (before)
h264_weight2_8_rvv_i32: 348.5 (after)
h264_weight4_8_c: 2255.8
h264_weight4_8_rvv_i32: 1015.0 (before)
h264_weight4_8_rvv_i32: 691.0 (after)
h264_weight8_8_c: 3857.5
h264_weight8_8_rvv_i32: 2218.8 (before)
h264_weight8_8_rvv_i32: 1561.3 (after)
h264_weight16_8_c: 7431.5
h264_weight16_8_rvv_i32: 2737.3 (before)
h264_weight16_8_rvv_i32: 1848.3 (after)
SpacemiT X60 (ns):
h264_weight2_8_c: 1624.1
h264_weight2_8_rvv_i32: 352.6 (before)
h264_weight2_8_rvv_i32: 259.3 (after)
h264_weight4_8_c: 2259.3
h264_weight4_8_rvv_i32: 685.8 (before)
h264_weight4_8_rvv_i32: 530.3 (after)
h264_weight8_8_c: 4103.3
h264_weight8_8_rvv_i32: 1581.8 (before)
h264_weight8_8_rvv_i32: 1238.6 (after)
h264_weight16_8_c: 7624.3
h264_weight16_8_rvv_i32: 2738.1 (before)
h264_weight16_8_rvv_i32: 1853.3 (after)
| -rw-r--r-- | libavcodec/riscv/h264dsp_rvv.S | 37 |
1 files changed, 16 insertions, 21 deletions
diff --git a/libavcodec/riscv/h264dsp_rvv.S b/libavcodec/riscv/h264dsp_rvv.S index 0e08de43e4..0d641008cb 100644 --- a/libavcodec/riscv/h264dsp_rvv.S +++ b/libavcodec/riscv/h264dsp_rvv.S @@ -32,17 +32,15 @@ func ff_h264_weight_pixels_simple_8_rvv, zve32x csrwi vxrm, 0 sll a5, a5, a3 1: - vsetvli zero, a6, e32, m4, ta, ma + vsetvli zero, a6, e16, m2, ta, ma vle8.v v8, (a0) addi a2, a2, -1 - vmv.v.x v16, a5 - vsetvli zero, zero, e16, m2, ta, ma vzext.vf2 v24, v8 - vwmaccsu.vx v16, a4, v24 - vnclip.wx v16, v16, a3 + vmul.vx v16, v24, a4 + vsadd.vx v16, v16, a5 vmax.vx v16, v16, zero vsetvli zero, zero, e8, m1, ta, ma - vnclipu.wi v8, v16, 0 + vnclipu.wx v8, v16, a3 vse8.v v8, (a0) add a0, a0, a1 bnez a2, 1b @@ -85,23 +83,20 @@ func ff_h264_weight_pixels_8_rvv, zve32x mv t0, a0 mv t6, a6 2: - vsetvli t2, a2, e32, m8, ta, ma + vsetvli t2, a2, e16, m8, ta, ma vlsseg2e8.v v0, (t0), a1 addi t6, t6, -2 - vmv.v.x v16, a5 - vmv.v.x v24, a5 - vsetvli zero, zero, e16, m4, ta, ma - vzext.vf2 v8, v0 - vzext.vf2 v12, v2 - vwmaccsu.vx v16, a4, v8 - vwmaccsu.vx v24, a4, v12 - vnclip.wx v8, v16, a3 - vnclip.wx v12, v24, a3 - vmax.vx v8, v8, zero - vmax.vx v12, v12, zero - vsetvli zero, zero, e8, m2, ta, ma - vnclipu.wi v0, v8, 0 - vnclipu.wi v2, v12, 0 + vzext.vf2 v16, v0 + vzext.vf2 v24, v4 + vmul.vx v16, v16, a4 + vmul.vx v24, v24, a4 + vsadd.vx v16, v16, a5 + vsadd.vx v24, v24, a5 + vmax.vx v16, v16, zero + vmax.vx v24, v24, zero + vsetvli zero, zero, e8, m4, ta, ma + vnclipu.wx v0, v16, a3 + vnclipu.wx v4, v24, a3 vssseg2e8.v v0, (t0), a1 addi t0, t0, 2 bnez t6, 2b |