LAV
/
FFmpeg
1
0
Fork 0
Code

lavc/flacdsp: R-V V decorrelate_ms packed 

flac_decorrelate_ms_16_c:       585.5
flac_decorrelate_ms_16_rvv_i32: 263.0
flac_decorrelate_ms_32_c:       584.7
flac_decorrelate_ms_32_rvv_i32: 250.0
This commit is contained in:
Rémi Denis-Courmont 2023-11-13 21:46:16 +02:00
parent 636ae0e0bc
commit 6183a69c0b
2 changed files with 55 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
libavcodec/riscv/flacdsp_init.c
View File

@ -28,10 +28,14 @@ void ff_flac_decorrelate_ls_16_rvv(uint8_t **out, int32_t **in,
int channels, int len, int shift);
void ff_flac_decorrelate_rs_16_rvv(uint8_t **out, int32_t **in,
int channels, int len, int shift);
void ff_flac_decorrelate_ms_16_rvv(uint8_t **out, int32_t **in,
int channels, int len, int shift);
void ff_flac_decorrelate_ls_32_rvv(uint8_t **out, int32_t **in,
int channels, int len, int shift);
void ff_flac_decorrelate_rs_32_rvv(uint8_t **out, int32_t **in,
int channels, int len, int shift);
void ff_flac_decorrelate_ms_32_rvv(uint8_t **out, int32_t **in,
int channels, int len, int shift);
av_cold void ff_flacdsp_init_riscv(FLACDSPContext *c, enum AVSampleFormat fmt,
int channels)
@ -44,10 +48,12 @@ av_cold void ff_flacdsp_init_riscv(FLACDSPContext *c, enum AVSampleFormat fmt,
case AV_SAMPLE_FMT_S16:
c->decorrelate[1] = ff_flac_decorrelate_ls_16_rvv;
c->decorrelate[2] = ff_flac_decorrelate_rs_16_rvv;
c->decorrelate[3] = ff_flac_decorrelate_ms_16_rvv;
break;
case AV_SAMPLE_FMT_S32:
c->decorrelate[1] = ff_flac_decorrelate_ls_32_rvv;
c->decorrelate[2] = ff_flac_decorrelate_rs_32_rvv;
c->decorrelate[3] = ff_flac_decorrelate_ms_32_rvv;
break;
}
}

49
libavcodec/riscv/flacdsp_rvv.S
View File

@ -69,6 +69,32 @@ func ff_flac_decorrelate_rs_16_rvv, zve32x
ret
endfunc
func ff_flac_decorrelate_ms_16_rvv, zve32x
ld a0, (a0)
ld a2, 8(a1)
ld a1, (a1)
1:
vsetvli t0, a3, e32, m8, ta, ma
vle32.v v8, (a2)
sub a3, a3, t0
vle32.v v0, (a1)
sh2add a1, t0, a1
vsra.vi v16, v8, 1
sh2add a2, t0, a2
vsub.vv v24, v0, v16
vadd.vv v16, v24, v8
vsll.vx v8, v24, a4
vsll.vx v0, v16, a4
vsetvli zero, zero, e16, m4, ta, ma
vncvt.x.x.w v0, v0
vncvt.x.x.w v4, v8
vsseg2e16.v v0, (a0)
sh2add a0, t0, a0
bnez a3, 1b
ret
endfunc
func ff_flac_decorrelate_ls_32_rvv, zve32x
ld a0, (a0)
ld a2, 8(a1)
@ -110,4 +136,27 @@ func ff_flac_decorrelate_rs_32_rvv, zve32x
ret
endfunc
func ff_flac_decorrelate_ms_32_rvv, zve32x
ld a0, (a0)
ld a2, 8(a1)
ld a1, (a1)
1:
vsetvli t0, a3, e32, m4, ta, ma
vle32.v v4, (a2)
sub a3, a3, t0
vle32.v v0, (a1)
sh2add a1, t0, a1
vsra.vi v8, v4, 1
sh2add a2, t0, a2
vsub.vv v12, v0, v8
vadd.vv v8, v12, v4
vsll.vx v4, v12, a4
vsll.vx v0, v8, a4
vsseg2e32.v v0, (a0)
sh3add a0, t0, a0
bnez a3, 1b
ret
endfunc
#endif