;************************************************************************ ;* 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 ;* 51, Inc., Foundation Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA ;****************************************************************************** %include "libavutil/x86/x86util.asm" %if ARCH_X86_64 SECTION_RODATA 32 ; Full matrix for row transform. const tmatrix_row dw 64, 89, 84, 75, 64, 50, 35, 18 dw 64, -18, -84, 50, 64, -75, -35, 89 dw 64, 75, 35, -18, -64, -89, -84, -50 dw 64, -50, -35, 89, -64, -18, 84, -75 dw 64, 50, -35, -89, -64, 18, 84, 75 dw 64, -75, 35, 18, -64, 89, -84, 50 dw 64, 18, -84, -50, 64, 75, -35, -89 dw 64, -89, 84, -75, 64, -50, 35, -18 ; Constant pairs for broadcast in column transform. const tmatrix_col_even dw 64, 64, 64, -64 dw 84, 35, 35, -84 const tmatrix_col_odd dw 89, 75, 50, 18 dw 75, -18, -89, -50 dw 50, -89, 18, 75 dw 18, -50, 75, -89 ; Memory targets for vpbroadcastd (register version requires AVX512). cextern pd_1 cextern pd_64 SECTION .text ; void ff_apv_decode_transquant_avx2(void *output, ; ptrdiff_t pitch, ; const int16_t *input, ; const int16_t *qmatrix, ; int bit_depth, ; int qp_shift); INIT_YMM avx2 cglobal apv_decode_transquant, 5, 7, 16, output, pitch, input, qmatrix, bit_depth, qp_shift, tmp ; Load input and dequantise vpbroadcastd m10, [pd_1] lea tmpd, [bit_depthd - 2] movd xm8, qp_shiftm movd xm9, tmpd vpslld m10, m10, xm9 vpsrld m10, m10, 1 ; m8 = scalar qp_shift ; m9 = scalar bd_shift ; m10 = vector 1 << (bd_shift - 1) ; m11 = qmatrix load %macro LOAD_AND_DEQUANT 2 ; (xmm input, constant offset) vpmovsxwd m%1, [inputq + %2] vpmovsxwd m11, [qmatrixq + %2] vpmaddwd m%1, m%1, m11 vpslld m%1, m%1, xm8 vpaddd m%1, m%1, m10 vpsrad m%1, m%1, xm9 vpackssdw m%1, m%1, m%1 %endmacro LOAD_AND_DEQUANT 0, 0x00 LOAD_AND_DEQUANT 1, 0x10 LOAD_AND_DEQUANT 2, 0x20 LOAD_AND_DEQUANT 3, 0x30 LOAD_AND_DEQUANT 4, 0x40 LOAD_AND_DEQUANT 5, 0x50 LOAD_AND_DEQUANT 6, 0x60 LOAD_AND_DEQUANT 7, 0x70 ; mN = row N words 0 1 2 3 0 1 2 3 4 5 6 7 4 5 6 7 ; Transform columns ; This applies a 1-D DCT butterfly vpunpcklwd m12, m0, m4 vpunpcklwd m13, m2, m6 vpunpcklwd m14, m1, m3 vpunpcklwd m15, m5, m7 ; m12 = rows 0 and 4 interleaved ; m13 = rows 2 and 6 interleaved ; m14 = rows 1 and 3 interleaved ; m15 = rows 5 and 7 interleaved lea tmpq, [tmatrix_col_even] vpbroadcastd m0, [tmpq + 0x00] vpbroadcastd m1, [tmpq + 0x04] vpbroadcastd m2, [tmpq + 0x08] vpbroadcastd m3, [tmpq + 0x0c] vpmaddwd m4, m12, m0 vpmaddwd m5, m12, m1 vpmaddwd m6, m13, m2 vpmaddwd m7, m13, m3 vpaddd m8, m4, m6 vpaddd m9, m5, m7 vpsubd m10, m5, m7 vpsubd m11, m4, m6 lea tmpq, [tmatrix_col_odd] vpbroadcastd m0, [tmpq + 0x00] vpbroadcastd m1, [tmpq + 0x04] vpbroadcastd m2, [tmpq + 0x08] vpbroadcastd m3, [tmpq + 0x0c] vpmaddwd m4, m14, m0 vpmaddwd m5, m15, m1 vpmaddwd m6, m14, m2 vpmaddwd m7, m15, m3 vpaddd m12, m4, m5 vpaddd m13, m6, m7 vpbroadcastd m0, [tmpq + 0x10] vpbroadcastd m1, [tmpq + 0x14] vpbroadcastd m2, [tmpq + 0x18] vpbroadcastd m3, [tmpq + 0x1c] vpmaddwd m4, m14, m0 vpmaddwd m5, m15, m1 vpmaddwd m6, m14, m2 vpmaddwd m7, m15, m3 vpaddd m14, m4, m5 vpaddd m15, m6, m7 vpaddd m0, m8, m12 vpaddd m1, m9, m13 vpaddd m2, m10, m14 vpaddd m3, m11, m15 vpsubd m4, m11, m15 vpsubd m5, m10, m14 vpsubd m6, m9, m13 vpsubd m7, m8, m12 ; Mid-transform normalisation ; Note that outputs here are fitted to 16 bits vpbroadcastd m8, [pd_64] %macro NORMALISE 1 vpaddd m%1, m%1, m8 vpsrad m%1, m%1, 7 vpackssdw m%1, m%1, m%1 vpermq m%1, m%1, q3120 %endmacro NORMALISE 0 NORMALISE 1 NORMALISE 2 NORMALISE 3 NORMALISE 4 NORMALISE 5 NORMALISE 6 NORMALISE 7 ; mN = row N words 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 ; Transform rows ; This multiplies the rows directly by the transform matrix, ; avoiding the need to transpose anything lea tmpq, [tmatrix_row] mova m12, [tmpq + 0x00] mova m13, [tmpq + 0x20] mova m14, [tmpq + 0x40] mova m15, [tmpq + 0x60] %macro TRANS_ROW_STEP 1 vpmaddwd m8, m%1, m12 vpmaddwd m9, m%1, m13 vpmaddwd m10, m%1, m14 vpmaddwd m11, m%1, m15 vphaddd m8, m8, m9 vphaddd m10, m10, m11 vphaddd m%1, m8, m10 %endmacro TRANS_ROW_STEP 0 TRANS_ROW_STEP 1 TRANS_ROW_STEP 2 TRANS_ROW_STEP 3 TRANS_ROW_STEP 4 TRANS_ROW_STEP 5 TRANS_ROW_STEP 6 TRANS_ROW_STEP 7 ; Renormalise, clip and store output vpbroadcastd m14, [pd_1] mov tmpd, 20 sub tmpd, bit_depthd movd xm9, tmpd dec tmpd movd xm13, tmpd movd xm15, bit_depthd vpslld m8, m14, xm13 vpslld m12, m14, xm15 vpsrld m10, m12, 1 vpsubd m12, m12, m14 vpxor m11, m11, m11 ; m8 = vector 1 << (bd_shift - 1) ; m9 = scalar bd_shift ; m10 = vector 1 << (bit_depth - 1) ; m11 = zero ; m12 = vector (1 << bit_depth) - 1 cmp bit_depthd, 8 jne store_10 lea tmpq, [pitchq + 2*pitchq] %macro NORMALISE_AND_STORE_8 4 vpaddd m%1, m%1, m8 vpaddd m%2, m%2, m8 vpaddd m%3, m%3, m8 vpaddd m%4, m%4, m8 vpsrad m%1, m%1, xm9 vpsrad m%2, m%2, xm9 vpsrad m%3, m%3, xm9 vpsrad m%4, m%4, xm9 vpaddd m%1, m%1, m10 vpaddd m%2, m%2, m10 vpaddd m%3, m%3, m10 vpaddd m%4, m%4, m10 ; m%1 = A0-3 A4-7 ; m%2 = B0-3 B4-7 ; m%3 = C0-3 C4-7 ; m%4 = D0-3 D4-7 vpackusdw m%1, m%1, m%2 vpackusdw m%3, m%3, m%4 ; m%1 = A0-3 B0-3 A4-7 B4-7 ; m%2 = C0-3 D0-3 C4-7 D4-7 vpermq m%1, m%1, q3120 vpermq m%2, m%3, q3120 ; m%1 = A0-3 A4-7 B0-3 B4-7 ; m%2 = C0-3 C4-7 D0-3 D4-7 vpackuswb m%1, m%1, m%2 ; m%1 = A0-3 A4-7 C0-3 C4-7 B0-3 B4-7 D0-3 D4-7 vextracti128 xm%2, m%1, 1 vmovq [outputq], xm%1 vmovq [outputq + pitchq], xm%2 vpextrq [outputq + 2*pitchq], xm%1, 1 vpextrq [outputq + tmpq], xm%2, 1 lea outputq, [outputq + 4*pitchq] %endmacro NORMALISE_AND_STORE_8 0, 1, 2, 3 NORMALISE_AND_STORE_8 4, 5, 6, 7 RET store_10: %macro NORMALISE_AND_STORE_10 2 vpaddd m%1, m%1, m8 vpaddd m%2, m%2, m8 vpsrad m%1, m%1, xm9 vpsrad m%2, m%2, xm9 vpaddd m%1, m%1, m10 vpaddd m%2, m%2, m10 vpmaxsd m%1, m%1, m11 vpmaxsd m%2, m%2, m11 vpminsd m%1, m%1, m12 vpminsd m%2, m%2, m12 ; m%1 = A0-3 A4-7 ; m%2 = B0-3 B4-7 vpackusdw m%1, m%1, m%2 ; m%1 = A0-3 B0-3 A4-7 B4-7 vpermq m%1, m%1, q3120 ; m%1 = A0-3 A4-7 B0-3 B4-7 mova [outputq], xm%1 vextracti128 [outputq + pitchq], m%1, 1 lea outputq, [outputq + 2*pitchq] %endmacro NORMALISE_AND_STORE_10 0, 1 NORMALISE_AND_STORE_10 2, 3 NORMALISE_AND_STORE_10 4, 5 NORMALISE_AND_STORE_10 6, 7 RET %endif ; ARCH_X86_64