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lavc/flacdsp: R-V Zvl256b lpc33 

flac_lpc_33_13_c: 499.7
flac_lpc_33_13_rvv_i64: 197.7
flac_lpc_33_16_c: 601.5
flac_lpc_33_16_rvv_i64: 195.2
flac_lpc_33_29_c: 1011.5
flac_lpc_33_29_rvv_i64: 300.7
flac_lpc_33_32_c: 1099.0
flac_lpc_33_32_rvv_i64: 296.7
This commit is contained in:
Rémi Denis-Courmont 2024-05-13 23:20:46 +03:00
parent 5ebb071d79
commit a535ce2ac0
2 changed files with 32 additions and 2 deletions
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7
libavcodec/riscv/flacdsp_init.c
View File

@ -31,6 +31,8 @@ void ff_flac_lpc32_rvv(int32_t *decoded, const int coeffs[32],
int pred_order, int qlevel, int len);
void ff_flac_lpc32_rvv_simple(int32_t *decoded, const int coeffs[32],
int pred_order, int qlevel, int len);
void ff_flac_lpc33_rvv(int64_t *, const int32_t *, const int coeffs[32],
int pred_order, int qlevel, int len);
void ff_flac_wasted32_rvv(int32_t *, int shift, int len);
void ff_flac_wasted33_rvv(int64_t *, const int32_t *, int shift, int len);
void ff_flac_decorrelate_indep2_16_rvv(uint8_t **out, int32_t **in,
@ -76,9 +78,10 @@ av_cold void ff_flacdsp_init_riscv(FLACDSPContext *c, enum AVSampleFormat fmt,
# if (__riscv_xlen >= 64)
if (flags & AV_CPU_FLAG_RVV_I64) {
if (vlenb > 16)
if (vlenb > 16) {
c->lpc32 = ff_flac_lpc32_rvv_simple;
else
c->lpc33 = ff_flac_lpc33_rvv;
} else
c->lpc32 = ff_flac_lpc32_rvv;
}
# endif

27
libavcodec/riscv/flacdsp_rvv.S
View File

@ -103,6 +103,33 @@ func ff_flac_lpc32_rvv_simple, zve64x, zbb
ret
endfunc
func ff_flac_lpc33_rvv, zve64x, zbb
vtype_vli t0, a3, t1, e64, ta, ma
vsetvl zero, a3, t0
vmv.s.x v0, zero
sh2add a1, a3, a1
vle32.v v24, (a2)
sub a5, a5, a3
vle64.v v16, (a0)
sh3add a0, a3, a0
vsext.vf2 v8, v24
1:
vmul.vv v24, v8, v16
lw t0, (a1)
addi a1, a1, 4
vredsum.vs v24, v24, v0
addi a5, a5, -1
vmv.x.s t1, v24
sra t1, t1, a4
add t0, t0, t1
vslide1down.vx v16, v16, t0
sd t0, (a0)
addi a0, a0, 8
bnez a5, 1b
ret
endfunc
#endif
func ff_flac_wasted32_rvv, zve32x