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lavc/vc1dsp: match C block layout in inv_trans_4x8_rvv

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Although checkasm does not verify this, the decoder requires that the
transform updates the input block exactly like the C code does.

This fixes vc1-ism, vc1_ilaced_twomv, vc1_sa00040, vc1_sa10091,
vc1_sa10143, vc1_sa20021, vc1test_smm0005 and wmv3-drm-dec tests.
This commit is contained in:
Rémi Denis-Courmont 2024-06-10 20:29:56 +03:00
parent 6c05069e68
commit b6f37ffba7
1 changed files with 17 additions and 8 deletions
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25
libavcodec/riscv/vc1dsp_rvv.S
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@ -303,15 +303,24 @@ func ff_vc1_inv_trans_4x8_rvv, zve32x
vlsseg4e16.v v0, (a2), a3
li t1, 3
jal t0, ff_vc1_inv_trans_4_rvv
addi t1, a2, 1 * 8 * 2
vse16.v v0, (a2)
addi t2, a2, 2 * 8 * 2
vse16.v v1, (t1)
addi t3, a2, 3 * 8 * 2
vse16.v v2, (t2)
vse16.v v3, (t3)
vssseg4e16.v v0, (a2), a3
vsetivli zero, 4, e16, mf2, ta, ma
vlseg8e16.v v0, (a2)
addi t1, a2, 1 * 8 * 2
vle16.v v0, (a2)
addi t2, a2, 2 * 8 * 2
vle16.v v1, (t1)
addi t3, a2, 3 * 8 * 2
vle16.v v2, (t2)
addi t4, a2, 4 * 8 * 2
vle16.v v3, (t3)
addi t5, a2, 5 * 8 * 2
vle16.v v4, (t4)
addi t6, a2, 6 * 8 * 2
vle16.v v5, (t5)
addi t1, a2, 7 * 8 * 2
vle16.v v6, (t6)
vle16.v v7, (t1)
jal t0, ff_vc1_inv_trans_8_rvv
vadd.vi v4, v4, 1
add t0, a1, a0