diff options
Diffstat (limited to 'ffmpeg1/libavcodec/x86/sbrdsp.asm')
| -rw-r--r-- | ffmpeg1/libavcodec/x86/sbrdsp.asm | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/ffmpeg1/libavcodec/x86/sbrdsp.asm b/ffmpeg1/libavcodec/x86/sbrdsp.asm new file mode 100644 index 0000000..1b7f3a8 --- /dev/null +++ b/ffmpeg1/libavcodec/x86/sbrdsp.asm @@ -0,0 +1,222 @@ +;****************************************************************************** +;* AAC Spectral Band Replication decoding functions +;* Copyright (C) 2012 Christophe Gisquet <christophe.gisquet@gmail.com> +;* +;* This file is part of Libav. +;* +;* Libav 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. +;* +;* Libav 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 Libav; if not, write to the Free Software +;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +;****************************************************************************** + +%include "libavutil/x86/x86util.asm" + +SECTION_RODATA +; mask equivalent for multiply by -1.0 1.0 +ps_mask times 2 dd 1<<31, 0 +ps_neg times 4 dd 1<<31 + +SECTION_TEXT + +INIT_XMM sse +cglobal sbr_sum_square, 2, 3, 6 + mov r2, r1 + xorps m0, m0 + xorps m1, m1 + sar r2, 3 + jz .prepare +.loop: + movu m2, [r0 + 0] + movu m3, [r0 + 16] + movu m4, [r0 + 32] + movu m5, [r0 + 48] + mulps m2, m2 + mulps m3, m3 + mulps m4, m4 + mulps m5, m5 + addps m0, m2 + addps m1, m3 + addps m0, m4 + addps m1, m5 + add r0, 64 + dec r2 + jnz .loop +.prepare: + and r1, 7 + sar r1, 1 + jz .end +; len is a multiple of 2, thus there are at least 4 elements to process +.endloop: + movu m2, [r0] + add r0, 16 + mulps m2, m2 + dec r1 + addps m0, m2 + jnz .endloop +.end: + addps m0, m1 + movhlps m2, m0 + addps m0, m2 + movss m1, m0 + shufps m0, m0, 1 + addss m0, m1 +%if ARCH_X86_64 == 0 + movss r0m, m0 + fld dword r0m +%endif + RET + +%define STEP 40*4*2 +cglobal sbr_hf_g_filt, 5, 6, 5 + lea r1, [r1 + 8*r4] ; offset by ixh elements into X_high + mov r5, r3 + and r3, 0xFC + lea r2, [r2 + r3*4] + lea r0, [r0 + r3*8] + neg r3 + jz .loop1 +.loop4: + movlps m0, [r2 + 4*r3 + 0] + movlps m1, [r2 + 4*r3 + 8] + movlps m2, [r1 + 0*STEP] + movlps m3, [r1 + 2*STEP] + movhps m2, [r1 + 1*STEP] + movhps m3, [r1 + 3*STEP] + unpcklps m0, m0 + unpcklps m1, m1 + mulps m0, m2 + mulps m1, m3 + movu [r0 + 8*r3 + 0], m0 + movu [r0 + 8*r3 + 16], m1 + add r1, 4*STEP + add r3, 4 + jnz .loop4 + and r5, 3 ; number of single element loops + jz .end +.loop1: ; element 0 and 1 can be computed at the same time + movss m0, [r2] + movlps m2, [r1] + unpcklps m0, m0 + mulps m2, m0 + movlps [r0], m2 + add r0, 8 + add r2, 4 + add r1, STEP + dec r5 + jnz .loop1 +.end: + RET + +; static void sbr_hf_gen_c(float (*X_high)[2], const float (*X_low)[2], +; const float alpha0[2], const float alpha1[2], +; float bw, int start, int end) +; +cglobal sbr_hf_gen, 4,4,8, X_high, X_low, alpha0, alpha1, BW, S, E + ; load alpha factors +%define bw m0 +%if ARCH_X86_64 == 0 || WIN64 + movss bw, BWm +%endif + movlps m2, [alpha1q] + movlps m1, [alpha0q] + shufps bw, bw, 0 + mulps m2, bw ; (a1[0] a1[1])*bw + mulps m1, bw ; (a0[0] a0[1])*bw = (a2 a3) + mulps m2, bw ; (a1[0] a1[1])*bw*bw = (a0 a1) + mova m3, m1 + mova m4, m2 + + ; Set pointers +%if ARCH_X86_64 == 0 || WIN64 + ; start and end 6th and 7th args on stack + mov r2d, Sm + mov r3d, Em +%define start r2q +%define end r3q +%else +; BW does not actually occupy a register, so shift by 1 +%define start BWq +%define end Sq +%endif + sub start, end ; neg num of loops + lea X_highq, [X_highq + end*2*4] + lea X_lowq, [X_lowq + end*2*4 - 2*2*4] + shl start, 3 ; offset from num loops + + mova m0, [X_lowq + start] + shufps m3, m3, q1111 + shufps m4, m4, q1111 + xorps m3, [ps_mask] + shufps m1, m1, q0000 + shufps m2, m2, q0000 + xorps m4, [ps_mask] +.loop2: + movu m7, [X_lowq + start + 8] ; BbCc + mova m6, m0 + mova m5, m7 + shufps m0, m0, q2301 ; aAbB + shufps m7, m7, q2301 ; bBcC + mulps m0, m4 + mulps m7, m3 + mulps m6, m2 + mulps m5, m1 + addps m7, m0 + mova m0, [X_lowq + start +16] ; CcDd + addps m7, m0 + addps m6, m5 + addps m7, m6 + mova [X_highq + start], m7 + add start, 16 + jnz .loop2 + RET + +cglobal sbr_sum64x5, 1,2,4,z + lea r1q, [zq+ 256] +.loop: + mova m0, [zq+ 0] + mova m2, [zq+ 16] + mova m1, [zq+ 256] + mova m3, [zq+ 272] + addps m0, [zq+ 512] + addps m2, [zq+ 528] + addps m1, [zq+ 768] + addps m3, [zq+ 784] + addps m0, [zq+1024] + addps m2, [zq+1040] + addps m0, m1 + addps m2, m3 + mova [zq], m0 + mova [zq+16], m2 + add zq, 32 + cmp zq, r1q + jne .loop + REP_RET + +INIT_XMM sse +cglobal sbr_qmf_post_shuffle, 2,3,4,W,z + lea r2q, [zq + (64-4)*4] + mova m3, [ps_neg] +.loop: + mova m1, [zq] + xorps m0, m3, [r2q] + shufps m0, m0, m0, q0123 + unpcklps m2, m0, m1 + unpckhps m0, m0, m1 + mova [Wq + 0], m2 + mova [Wq + 16], m0 + add Wq, 32 + sub r2q, 16 + add zq, 16 + cmp zq, r2q + jl .loop + REP_RET |