@@ -27,13 +27,19 @@
void ff_alac_decorrelate_stereo_rvv(int32_t *buffer[2], int nb_samples,
int decorr_shift, int decorr_left_weight);
+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);
av_cold void ff_alacdsp_init_riscv(ALACDSPContext *c)
{
#if HAVE_RVV && (__riscv_xlen == 64)
int flags = av_get_cpu_flags();
- if (flags & AV_CPU_FLAG_RVV_I32)
+ 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;
+ }
#endif
}
@@ -43,4 +43,22 @@ func ff_alac_decorrelate_stereo_rvv, zve32x
ret
endfunc
+
+func ff_alac_append_extra_bits_mono_rvv, zve32x
+ ld a0, (a0)
+ ld a1, (a1)
+1:
+ vsetvli t0, a4, e32, m1, ta, ma
+ vle32.v v16, (a0)
+ sub a4, a4, t0
+ vle32.v v24, (a1)
+ sh2add a1, t0, a1
+ vsll.vx v16, v16, a2
+ vor.vv v16, v24, v16
+ vse32.v v16, (a0)
+ sh2add a0, t0, a0
+ bnez a4, 1b
+
+ ret
+endfunc
#endif
From: Rémi Denis-Courmont <remi@remlab.net> --- libavcodec/riscv/alacdsp_init.c | 8 +++++++- libavcodec/riscv/alacdsp_rvv.S | 18 ++++++++++++++++++ 2 files changed, 25 insertions(+), 1 deletion(-)