| /* |
| * VC-1 and WMV3 decoder - DSP functions AltiVec-optimized |
| * Copyright (c) 2006 Konstantin Shishkov |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "libavcodec/dsputil.h" |
| |
| #include "gcc_fixes.h" |
| |
| #include "util_altivec.h" |
| |
| // main steps of 8x8 transform |
| #define STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_rnd) \ |
| do { \ |
| t0 = vec_sl(vec_add(s0, s4), vec_2); \ |
| t0 = vec_add(vec_sl(t0, vec_1), t0); \ |
| t0 = vec_add(t0, vec_rnd); \ |
| t1 = vec_sl(vec_sub(s0, s4), vec_2); \ |
| t1 = vec_add(vec_sl(t1, vec_1), t1); \ |
| t1 = vec_add(t1, vec_rnd); \ |
| t2 = vec_add(vec_sl(s6, vec_2), vec_sl(s6, vec_1)); \ |
| t2 = vec_add(t2, vec_sl(s2, vec_4)); \ |
| t3 = vec_add(vec_sl(s2, vec_2), vec_sl(s2, vec_1)); \ |
| t3 = vec_sub(t3, vec_sl(s6, vec_4)); \ |
| t4 = vec_add(t0, t2); \ |
| t5 = vec_add(t1, t3); \ |
| t6 = vec_sub(t1, t3); \ |
| t7 = vec_sub(t0, t2); \ |
| \ |
| t0 = vec_sl(vec_add(s1, s3), vec_4); \ |
| t0 = vec_add(t0, vec_sl(s5, vec_3)); \ |
| t0 = vec_add(t0, vec_sl(s7, vec_2)); \ |
| t0 = vec_add(t0, vec_sub(s5, s3)); \ |
| \ |
| t1 = vec_sl(vec_sub(s1, s5), vec_4); \ |
| t1 = vec_sub(t1, vec_sl(s7, vec_3)); \ |
| t1 = vec_sub(t1, vec_sl(s3, vec_2)); \ |
| t1 = vec_sub(t1, vec_add(s1, s7)); \ |
| \ |
| t2 = vec_sl(vec_sub(s7, s3), vec_4); \ |
| t2 = vec_add(t2, vec_sl(s1, vec_3)); \ |
| t2 = vec_add(t2, vec_sl(s5, vec_2)); \ |
| t2 = vec_add(t2, vec_sub(s1, s7)); \ |
| \ |
| t3 = vec_sl(vec_sub(s5, s7), vec_4); \ |
| t3 = vec_sub(t3, vec_sl(s3, vec_3)); \ |
| t3 = vec_add(t3, vec_sl(s1, vec_2)); \ |
| t3 = vec_sub(t3, vec_add(s3, s5)); \ |
| \ |
| s0 = vec_add(t4, t0); \ |
| s1 = vec_add(t5, t1); \ |
| s2 = vec_add(t6, t2); \ |
| s3 = vec_add(t7, t3); \ |
| s4 = vec_sub(t7, t3); \ |
| s5 = vec_sub(t6, t2); \ |
| s6 = vec_sub(t5, t1); \ |
| s7 = vec_sub(t4, t0); \ |
| }while(0) |
| |
| #define SHIFT_HOR8(s0, s1, s2, s3, s4, s5, s6, s7) \ |
| do { \ |
| s0 = vec_sra(s0, vec_3); \ |
| s1 = vec_sra(s1, vec_3); \ |
| s2 = vec_sra(s2, vec_3); \ |
| s3 = vec_sra(s3, vec_3); \ |
| s4 = vec_sra(s4, vec_3); \ |
| s5 = vec_sra(s5, vec_3); \ |
| s6 = vec_sra(s6, vec_3); \ |
| s7 = vec_sra(s7, vec_3); \ |
| }while(0) |
| |
| #define SHIFT_VERT8(s0, s1, s2, s3, s4, s5, s6, s7) \ |
| do { \ |
| s0 = vec_sra(s0, vec_7); \ |
| s1 = vec_sra(s1, vec_7); \ |
| s2 = vec_sra(s2, vec_7); \ |
| s3 = vec_sra(s3, vec_7); \ |
| s4 = vec_sra(vec_add(s4, vec_1s), vec_7); \ |
| s5 = vec_sra(vec_add(s5, vec_1s), vec_7); \ |
| s6 = vec_sra(vec_add(s6, vec_1s), vec_7); \ |
| s7 = vec_sra(vec_add(s7, vec_1s), vec_7); \ |
| }while(0) |
| |
| /* main steps of 4x4 transform */ |
| #define STEP4(s0, s1, s2, s3, vec_rnd) \ |
| do { \ |
| t1 = vec_add(vec_sl(s0, vec_4), s0); \ |
| t1 = vec_add(t1, vec_rnd); \ |
| t2 = vec_add(vec_sl(s2, vec_4), s2); \ |
| t0 = vec_add(t1, t2); \ |
| t1 = vec_sub(t1, t2); \ |
| t3 = vec_sl(vec_sub(s3, s1), vec_1); \ |
| t3 = vec_add(t3, vec_sl(t3, vec_2)); \ |
| t2 = vec_add(t3, vec_sl(s1, vec_5)); \ |
| t3 = vec_add(t3, vec_sl(s3, vec_3)); \ |
| t3 = vec_add(t3, vec_sl(s3, vec_2)); \ |
| s0 = vec_add(t0, t2); \ |
| s1 = vec_sub(t1, t3); \ |
| s2 = vec_add(t1, t3); \ |
| s3 = vec_sub(t0, t2); \ |
| }while (0) |
| |
| #define SHIFT_HOR4(s0, s1, s2, s3) \ |
| s0 = vec_sra(s0, vec_3); \ |
| s1 = vec_sra(s1, vec_3); \ |
| s2 = vec_sra(s2, vec_3); \ |
| s3 = vec_sra(s3, vec_3); |
| |
| #define SHIFT_VERT4(s0, s1, s2, s3) \ |
| s0 = vec_sra(s0, vec_7); \ |
| s1 = vec_sra(s1, vec_7); \ |
| s2 = vec_sra(s2, vec_7); \ |
| s3 = vec_sra(s3, vec_7); |
| |
| /** Do inverse transform on 8x8 block |
| */ |
| static void vc1_inv_trans_8x8_altivec(DCTELEM block[64]) |
| { |
| vector signed short src0, src1, src2, src3, src4, src5, src6, src7; |
| vector signed int s0, s1, s2, s3, s4, s5, s6, s7; |
| vector signed int s8, s9, sA, sB, sC, sD, sE, sF; |
| vector signed int t0, t1, t2, t3, t4, t5, t6, t7; |
| const vector signed int vec_64 = vec_sl(vec_splat_s32(4), vec_splat_u32(4)); |
| const vector unsigned int vec_7 = vec_splat_u32(7); |
| const vector unsigned int vec_4 = vec_splat_u32(4); |
| const vector signed int vec_4s = vec_splat_s32(4); |
| const vector unsigned int vec_3 = vec_splat_u32(3); |
| const vector unsigned int vec_2 = vec_splat_u32(2); |
| const vector signed int vec_1s = vec_splat_s32(1); |
| const vector unsigned int vec_1 = vec_splat_u32(1); |
| |
| |
| src0 = vec_ld( 0, block); |
| src1 = vec_ld( 16, block); |
| src2 = vec_ld( 32, block); |
| src3 = vec_ld( 48, block); |
| src4 = vec_ld( 64, block); |
| src5 = vec_ld( 80, block); |
| src6 = vec_ld( 96, block); |
| src7 = vec_ld(112, block); |
| |
| TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7); |
| s0 = vec_unpackl(src0); |
| s1 = vec_unpackl(src1); |
| s2 = vec_unpackl(src2); |
| s3 = vec_unpackl(src3); |
| s4 = vec_unpackl(src4); |
| s5 = vec_unpackl(src5); |
| s6 = vec_unpackl(src6); |
| s7 = vec_unpackl(src7); |
| s8 = vec_unpackh(src0); |
| s9 = vec_unpackh(src1); |
| sA = vec_unpackh(src2); |
| sB = vec_unpackh(src3); |
| sC = vec_unpackh(src4); |
| sD = vec_unpackh(src5); |
| sE = vec_unpackh(src6); |
| sF = vec_unpackh(src7); |
| STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_4s); |
| SHIFT_HOR8(s0, s1, s2, s3, s4, s5, s6, s7); |
| STEP8(s8, s9, sA, sB, sC, sD, sE, sF, vec_4s); |
| SHIFT_HOR8(s8, s9, sA, sB, sC, sD, sE, sF); |
| src0 = vec_pack(s8, s0); |
| src1 = vec_pack(s9, s1); |
| src2 = vec_pack(sA, s2); |
| src3 = vec_pack(sB, s3); |
| src4 = vec_pack(sC, s4); |
| src5 = vec_pack(sD, s5); |
| src6 = vec_pack(sE, s6); |
| src7 = vec_pack(sF, s7); |
| TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7); |
| |
| s0 = vec_unpackl(src0); |
| s1 = vec_unpackl(src1); |
| s2 = vec_unpackl(src2); |
| s3 = vec_unpackl(src3); |
| s4 = vec_unpackl(src4); |
| s5 = vec_unpackl(src5); |
| s6 = vec_unpackl(src6); |
| s7 = vec_unpackl(src7); |
| s8 = vec_unpackh(src0); |
| s9 = vec_unpackh(src1); |
| sA = vec_unpackh(src2); |
| sB = vec_unpackh(src3); |
| sC = vec_unpackh(src4); |
| sD = vec_unpackh(src5); |
| sE = vec_unpackh(src6); |
| sF = vec_unpackh(src7); |
| STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_64); |
| SHIFT_VERT8(s0, s1, s2, s3, s4, s5, s6, s7); |
| STEP8(s8, s9, sA, sB, sC, sD, sE, sF, vec_64); |
| SHIFT_VERT8(s8, s9, sA, sB, sC, sD, sE, sF); |
| src0 = vec_pack(s8, s0); |
| src1 = vec_pack(s9, s1); |
| src2 = vec_pack(sA, s2); |
| src3 = vec_pack(sB, s3); |
| src4 = vec_pack(sC, s4); |
| src5 = vec_pack(sD, s5); |
| src6 = vec_pack(sE, s6); |
| src7 = vec_pack(sF, s7); |
| |
| vec_st(src0, 0, block); |
| vec_st(src1, 16, block); |
| vec_st(src2, 32, block); |
| vec_st(src3, 48, block); |
| vec_st(src4, 64, block); |
| vec_st(src5, 80, block); |
| vec_st(src6, 96, block); |
| vec_st(src7,112, block); |
| } |
| |
| /** Do inverse transform on 8x4 part of block |
| */ |
| static void vc1_inv_trans_8x4_altivec(uint8_t *dest, int stride, DCTELEM *block) |
| { |
| vector signed short src0, src1, src2, src3, src4, src5, src6, src7; |
| vector signed int s0, s1, s2, s3, s4, s5, s6, s7; |
| vector signed int s8, s9, sA, sB, sC, sD, sE, sF; |
| vector signed int t0, t1, t2, t3, t4, t5, t6, t7; |
| const vector signed int vec_64 = vec_sl(vec_splat_s32(4), vec_splat_u32(4)); |
| const vector unsigned int vec_7 = vec_splat_u32(7); |
| const vector unsigned int vec_5 = vec_splat_u32(5); |
| const vector unsigned int vec_4 = vec_splat_u32(4); |
| const vector signed int vec_4s = vec_splat_s32(4); |
| const vector unsigned int vec_3 = vec_splat_u32(3); |
| const vector unsigned int vec_2 = vec_splat_u32(2); |
| const vector unsigned int vec_1 = vec_splat_u32(1); |
| vector unsigned char tmp; |
| vector signed short tmp2, tmp3; |
| vector unsigned char perm0, perm1, p0, p1, p; |
| |
| src0 = vec_ld( 0, block); |
| src1 = vec_ld( 16, block); |
| src2 = vec_ld( 32, block); |
| src3 = vec_ld( 48, block); |
| src4 = vec_ld( 64, block); |
| src5 = vec_ld( 80, block); |
| src6 = vec_ld( 96, block); |
| src7 = vec_ld(112, block); |
| |
| TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7); |
| s0 = vec_unpackl(src0); |
| s1 = vec_unpackl(src1); |
| s2 = vec_unpackl(src2); |
| s3 = vec_unpackl(src3); |
| s4 = vec_unpackl(src4); |
| s5 = vec_unpackl(src5); |
| s6 = vec_unpackl(src6); |
| s7 = vec_unpackl(src7); |
| s8 = vec_unpackh(src0); |
| s9 = vec_unpackh(src1); |
| sA = vec_unpackh(src2); |
| sB = vec_unpackh(src3); |
| sC = vec_unpackh(src4); |
| sD = vec_unpackh(src5); |
| sE = vec_unpackh(src6); |
| sF = vec_unpackh(src7); |
| STEP8(s0, s1, s2, s3, s4, s5, s6, s7, vec_4s); |
| SHIFT_HOR8(s0, s1, s2, s3, s4, s5, s6, s7); |
| STEP8(s8, s9, sA, sB, sC, sD, sE, sF, vec_4s); |
| SHIFT_HOR8(s8, s9, sA, sB, sC, sD, sE, sF); |
| src0 = vec_pack(s8, s0); |
| src1 = vec_pack(s9, s1); |
| src2 = vec_pack(sA, s2); |
| src3 = vec_pack(sB, s3); |
| src4 = vec_pack(sC, s4); |
| src5 = vec_pack(sD, s5); |
| src6 = vec_pack(sE, s6); |
| src7 = vec_pack(sF, s7); |
| TRANSPOSE8(src0, src1, src2, src3, src4, src5, src6, src7); |
| |
| s0 = vec_unpackh(src0); |
| s1 = vec_unpackh(src1); |
| s2 = vec_unpackh(src2); |
| s3 = vec_unpackh(src3); |
| s8 = vec_unpackl(src0); |
| s9 = vec_unpackl(src1); |
| sA = vec_unpackl(src2); |
| sB = vec_unpackl(src3); |
| STEP4(s0, s1, s2, s3, vec_64); |
| SHIFT_VERT4(s0, s1, s2, s3); |
| STEP4(s8, s9, sA, sB, vec_64); |
| SHIFT_VERT4(s8, s9, sA, sB); |
| src0 = vec_pack(s0, s8); |
| src1 = vec_pack(s1, s9); |
| src2 = vec_pack(s2, sA); |
| src3 = vec_pack(s3, sB); |
| |
| p0 = vec_lvsl (0, dest); |
| p1 = vec_lvsl (stride, dest); |
| p = vec_splat_u8 (-1); |
| perm0 = vec_mergeh (p, p0); |
| perm1 = vec_mergeh (p, p1); |
| |
| #define ADD(dest,src,perm) \ |
| /* *(uint64_t *)&tmp = *(uint64_t *)dest; */ \ |
| tmp = vec_ld (0, dest); \ |
| tmp2 = (vector signed short)vec_perm (tmp, vec_splat_u8(0), perm); \ |
| tmp3 = vec_adds (tmp2, src); \ |
| tmp = vec_packsu (tmp3, tmp3); \ |
| vec_ste ((vector unsigned int)tmp, 0, (unsigned int *)dest); \ |
| vec_ste ((vector unsigned int)tmp, 4, (unsigned int *)dest); |
| |
| ADD (dest, src0, perm0) dest += stride; |
| ADD (dest, src1, perm1) dest += stride; |
| ADD (dest, src2, perm0) dest += stride; |
| ADD (dest, src3, perm1) |
| } |
| |
| |
| void vc1dsp_init_altivec(DSPContext* dsp, AVCodecContext *avctx) { |
| dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_altivec; |
| dsp->vc1_inv_trans_8x4 = vc1_inv_trans_8x4_altivec; |
| } |
