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181 lines
4.4 KiB
181 lines
4.4 KiB
/* |
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* Copyright © 2022 Rémi Denis-Courmont. |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "libavutil/riscv/asm.S" |
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func ff_shuffle_bytes_0321_rvv, zve32x |
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lpad 0 |
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li t1, 0x00ff00ff |
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j 1f |
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endfunc |
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func ff_shuffle_bytes_2103_rvv, zve32x, zba |
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lpad 0 |
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li t1, ~0x00ff00ff |
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1: |
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not t2, t1 |
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srai a2, a2, 2 |
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2: |
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vsetvli t0, a2, e32, m8, ta, ma |
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vle32.v v8, (a0) |
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sub a2, a2, t0 |
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vand.vx v16, v8, t2 |
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sh2add a0, t0, a0 |
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vand.vx v8, v8, t1 |
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vsrl.vi v24, v16, 16 |
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vsll.vi v16, v16, 16 |
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vor.vv v8, v8, v24 |
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vor.vv v8, v16, v8 |
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vse32.v v8, (a1) |
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sh2add a1, t0, a1 |
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bnez a2, 2b |
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ret |
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endfunc |
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func ff_shuffle_bytes_1230_rvv, zve32x |
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lpad 0 |
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li t1, 24 |
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li t2, 8 |
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j 3f |
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endfunc |
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func ff_shuffle_bytes_3012_rvv, zve32x, zba |
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lpad 0 |
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li t1, 8 |
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li t2, 24 |
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3: |
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srai a2, a2, 2 |
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4: |
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vsetvli t0, a2, e32, m8, ta, ma |
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vle32.v v8, (a0) |
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sub a2, a2, t0 |
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vsll.vx v16, v8, t1 |
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sh2add a0, t0, a0 |
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vsrl.vx v8, v8, t2 |
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vor.vv v16, v16, v8 |
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vse32.v v16, (a1) |
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sh2add a1, t0, a1 |
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bnez a2, 4b |
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ret |
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endfunc |
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func ff_interleave_bytes_rvv, zve32x, zba |
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lpad 0 |
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1: |
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mv t0, a0 |
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mv t1, a1 |
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mv t2, a2 |
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mv t3, a3 |
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addi a4, a4, -1 |
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2: |
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vsetvli t4, t3, e8, m4, ta, ma |
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sub t3, t3, t4 |
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vle8.v v8, (t0) |
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add t0, t4, t0 |
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vle8.v v12, (t1) |
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add t1, t4, t1 |
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vsseg2e8.v v8, (t2) |
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sh1add t2, t4, t2 |
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bnez t3, 2b |
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add a0, a0, a5 |
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add a1, a1, a6 |
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add a2, a2, a7 |
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bnez a4, 1b |
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ret |
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endfunc |
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func ff_deinterleave_bytes_rvv, zve32x, zba |
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lpad 0 |
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1: |
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mv t0, a0 |
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mv t1, a1 |
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mv t2, a2 |
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mv t3, a3 |
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addi a4, a4, -1 |
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2: |
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vsetvli t4, t3, e8, m4, ta, ma |
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sub t3, t3, t4 |
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vlseg2e8.v v8, (t0) |
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sh1add t0, t4, t0 |
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vse8.v v8, (t1) |
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add t1, t4, t1 |
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vse8.v v12, (t2) |
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add t2, t4, t2 |
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bnez t3, 2b |
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add a0, a0, a5 |
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add a1, a1, a6 |
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add a2, a2, a7 |
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bnez a4, 1b |
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ret |
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endfunc |
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.macro yuy2_to_i422p luma, chroma |
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lpad 0 |
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srai t4, a4, 1 // pixel width -> chroma width |
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lw t6, (sp) |
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slli t5, a4, 1 // pixel width -> (source) byte width |
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sub a6, a6, a4 |
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sub a7, a7, t4 |
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sub t6, t6, t5 |
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vsetvli t2, zero, e8, m4, ta, ma |
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1: |
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mv t4, a4 |
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addi a5, a5, -1 |
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2: |
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min t0, t2, t4 // ensure even VL on penultimate iteration |
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vsetvli t0, t0, e8, m4, ta, ma |
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vlseg2e8.v v16, (a3) |
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srli t1, t0, 1 |
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vsetvli zero, t1, e8, m2, ta, ma |
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vnsrl.wi v24, \chroma, 0 // U |
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sub t4, t4, t0 |
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vnsrl.wi v28, \chroma, 8 // V |
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sh1add a3, t0, a3 |
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vse8.v v24, (a1) |
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add a1, t1, a1 |
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vse8.v v28, (a2) |
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add a2, t1, a2 |
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vsetvli zero, t0, e8, m4, ta, ma |
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vse8.v \luma, (a0) |
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add a0, t0, a0 |
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bnez t4, 2b |
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add a3, a3, t6 |
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add a0, a0, a6 |
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add a1, a1, a7 |
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add a2, a2, a7 |
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bnez a5, 1b |
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ret |
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.endm |
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func ff_uyvytoyuv422_rvv, zve32x, b |
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yuy2_to_i422p v20, v16 |
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endfunc |
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func ff_yuyvtoyuv422_rvv, zve32x, b |
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yuy2_to_i422p v16, v20 |
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endfunc
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