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lavc/idctdsp: improve R-V V put_pixels_clamped

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Rémi Denis-Courmont 2023-10-27 22:08:10 +03:00
parent d48810f3a5
commit ae72412aa8
1 changed files with 9 additions and 16 deletions
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25
libavcodec/riscv/idctdsp_rvv.S
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@ -20,24 +20,17 @@
#include "libavutil/riscv/asm.S"
func ff_put_pixels_clamped_rvv, zve32x
vsetivli zero, 8, e16, m1, ta, ma
vlseg8e16.v v24, (a0)
func ff_put_pixels_clamped_rvv, zve64x
li t0, 8 * 8
vsetvli zero, t0, e16, m8, ta, ma
vle16.v v24, (a0)
/* RVV only has signed-signed and unsigned-unsigned clipping.
* We need two steps for signed-to-unsigned clipping. */
vsetvli t0, zero, e16, m8, ta, ma
vmax.vx v24, v24, zero
vsetivli zero, 8, e8, mf2, ta, ma
vnclipu.wi v16, v24, 0
vnclipu.wi v17, v25, 0
vnclipu.wi v18, v26, 0
vnclipu.wi v19, v27, 0
vnclipu.wi v20, v28, 0
vnclipu.wi v21, v29, 0
vnclipu.wi v22, v30, 0
vnclipu.wi v23, v31, 0
vssseg8e8.v v16, (a1), a2
vmax.vx v24, v24, zero
vsetvli zero, zero, e8, m4, ta, ma
vnclipu.wi v16, v24, 0
vsetivli zero, 8, e8, mf2, ta, ma
vsse64.v v16, (a1), a2
ret
endfunc