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lavc/alacdsp: RISC-V V append_extra_bits[1]

This commit is contained in:
Rémi Denis-Courmont 2022-10-04 20:17:18 +03:00 committed by Lynne
parent 55bde97f29
commit f0d1637c11
2 changed files with 32 additions and 0 deletions
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5
libavcodec/riscv/alacdsp_init.c
View File

@ -31,6 +31,10 @@ void ff_alac_append_extra_bits_mono_rvv(int32_t *buffer[2],
int32_t *extra_bits_buf[2],
int extra_bits, int channels,
int nb_samples);
void ff_alac_append_extra_bits_stereo_rvv(int32_t *buffer[2],
int32_t *extra_bits_buf[2],
int extra_bits, int channels,
int nb_samples);
av_cold void ff_alacdsp_init_riscv(ALACDSPContext *c)
{
@ -40,6 +44,7 @@ av_cold void ff_alacdsp_init_riscv(ALACDSPContext *c)
if (flags & AV_CPU_FLAG_RVV_I32) {
c->decorrelate_stereo = ff_alac_decorrelate_stereo_rvv;
c->append_extra_bits[0] = ff_alac_append_extra_bits_mono_rvv;
c->append_extra_bits[1] = ff_alac_append_extra_bits_stereo_rvv;
}
#endif
}

27
libavcodec/riscv/alacdsp_rvv.S
View File

@ -61,4 +61,31 @@ func ff_alac_append_extra_bits_mono_rvv, zve32x
ret
endfunc
func ff_alac_append_extra_bits_stereo_rvv, zve32x
ld a6, 8(a0)
ld a0, (a0)
ld a7, 8(a1)
ld a1, (a1)
1:
vsetvli t0, a4, e32, m1, ta, ma
vle32.v v16, (a0)
sub a4, a4, t0
vle32.v v0, (a6)
vsll.vx v16, v16, a2
vsll.vx v0, v0, a2
vle32.v v24, (a1)
sh2add a1, t0, a1
vle32.v v8, (a7)
sh2add a7, t0, a7
vor.vv v16, v24, v16
vor.vv v0, v8, v0
vse32.v v16, (a0)
sh2add a0, t0, a0
vse32.v v0, (a6)
sh2add a6, t0, a6
bnez a4, 1b
ret
endfunc
#endif