| ;****************************************************************************** |
| ;* SIMD-optimized MLP DSP functions |
| ;* Copyright (c) 2014 James Almer <jamrial@gmail.com> |
| ;* |
| ;* 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 "libavutil/x86/x86util.asm" |
| |
| SECTION .text |
| |
| %if ARCH_X86_64 |
| |
| %macro SHLX 2 |
| %if cpuflag(bmi2) |
| shlx %1, %1, %2q |
| %else |
| shl %1, %2b |
| %endif |
| %endmacro |
| |
| %macro REMATRIX 0 |
| movdqa m0, [samplesq] |
| movdqa m1, [coeffsq ] |
| pshufd m2, m0, q2301 |
| pshufd m3, m1, q2301 |
| pmuldq m0, m1 |
| pmuldq m3, m2 |
| paddq m0, m3 |
| %if notcpuflag(avx2) |
| movdqa m1, [samplesq + 16] |
| movdqa m2, [coeffsq + 16] |
| pshufd m3, m1, q2301 |
| pshufd m4, m2, q2301 |
| pmuldq m1, m2 |
| pmuldq m4, m3 |
| paddq m0, m1 |
| paddq m0, m4 |
| %else |
| vextracti128 xm1, m0, 1 |
| paddq xm0, xm1 |
| %endif |
| %endmacro |
| |
| %macro LOOP_END 0 |
| pshufd xm1, xm0, q0032 |
| paddq xm0, xm1 |
| movq accumq, xm0 |
| movzx blsbsd, byte [blsbs_ptrq] ; load *bypassed_lsbs |
| sar accumq, 14 ; accum >>= 14 |
| and accumd, maskd ; accum &= mask |
| add accumd, blsbsd ; accum += *bypassed_lsbs |
| mov [samplesq + dest_chq], accumd ; samples[dest_ch] = accum |
| add blsbs_ptrq, 8 ; bypassed_lsbs += MAX_CHANNELS; |
| add samplesq, 32 ; samples += MAX_CHANNELS; |
| cmp blsbs_ptrq, cntq |
| %endmacro |
| |
| %macro LOOP_SHIFT_END 0 |
| pshufd xm1, xm0, q0032 |
| paddq xm0, xm1 |
| movq accumq, xm0 |
| and indexd, auspd ; index &= access_unit_size_pow2; |
| movsx noiseq, byte [noise_bufferq + indexq] ; load noise_buffer[index] |
| add indexd, index2d ; index += index2 |
| SHLX noiseq, mns ; noise_buffer[index] <<= matrix_noise_shift |
| add accumq, noiseq ; accum += noise_buffer[index] |
| movzx noised, byte [blsbs_ptrq] ; load *bypassed_lsbs (reuse tmp noise register) |
| sar accumq, 14 ; accum >>= 14 |
| and accumd, maskd ; accum &= mask |
| add accumd, noised ; accum += *bypassed_lsbs |
| mov [samplesq + dest_chq], accumd ; samples[dest_ch] = accum |
| add blsbs_ptrq, 8 ; bypassed_lsbs += MAX_CHANNELS; |
| add samplesq, 32 ; samples += MAX_CHANNELS; |
| cmp blsbs_ptrq, cntq |
| %endmacro |
| |
| ;void ff_mlp_rematrix_channel(int32_t *samples, const int32_t *coeffs, |
| ; const uint8_t *bypassed_lsbs, const int8_t *noise_buffer, |
| ; int index, unsigned int dest_ch, uint16_t blockpos, |
| ; unsigned int maxchan, int matrix_noise_shift, |
| ; int access_unit_size_pow2, int32_t mask) |
| %macro MLP_REMATRIX_CHANNEL 0 |
| cglobal mlp_rematrix_channel, 0, 13, 5, samples, coeffs, blsbs_ptr, blsbs, \ |
| index, dest_ch, blockpos, maxchan, mns, \ |
| accum, mask, cnt |
| mov mnsd, mnsm ; load matrix_noise_shift |
| movzx blockposq, word blockposm ; load and zero extend blockpos (16bit) |
| mov maxchand, maxchanm ; load maxchan |
| mov maskd, maskm ; load mask |
| %if WIN64 |
| mov dest_chd, dest_chm ; load dest_chd (not needed on UNIX64) |
| %endif |
| shl dest_chd, 2 |
| lea cntq, [blsbs_ptrq + blockposq*8] |
| test mnsd, mnsd ; is matrix_noise_shift != 0? |
| jne .shift ; jump if true |
| cmp maxchand, 4 ; is maxchan < 4? |
| jl .loop4 ; jump if true |
| |
| align 16 |
| .loop8: |
| ; Process 5 or more channels |
| REMATRIX |
| LOOP_END |
| jne .loop8 |
| RET |
| |
| align 16 |
| .loop4: |
| ; Process up to 4 channels |
| movdqa xm0, [samplesq] |
| movdqa xm1, [coeffsq ] |
| pshufd xm2, xm0, q2301 |
| pshufd xm3, xm1, q2301 |
| pmuldq xm0, xm1 |
| pmuldq xm3, xm2 |
| paddq xm0, xm3 |
| LOOP_END |
| jne .loop4 |
| RET |
| |
| .shift: |
| %if WIN64 |
| mov indexd, indexm ; load index (not needed on UNIX64) |
| %endif |
| mov r9d, r9m ; load access_unit_size_pow2 |
| %if cpuflag(bmi2) |
| ; bmi2 has shift functions that accept any gpr, not just cl, so keep things in place. |
| DEFINE_ARGS samples, coeffs, blsbs_ptr, noise_buffer, \ |
| index, dest_ch, accum, index2, mns, \ |
| ausp, mask, cnt, noise |
| add mnsd, 7 ; matrix_noise_shift += 7 |
| %else ; sse4 |
| mov r6, rcx ; move rcx elsewhere so we can use cl for matrix_noise_shift |
| %if WIN64 |
| ; r0 = rcx |
| DEFINE_ARGS mns, coeffs, blsbs_ptr, noise_buffer, index, dest_ch, samples, \ |
| index2, accum, ausp, mask, cnt, noise |
| %else ; UNIX64 |
| ; r3 = rcx |
| DEFINE_ARGS samples, coeffs, blsbs_ptr, mns, index, dest_ch, noise_buffer, \ |
| index2, accum, ausp, mask, cnt, noise |
| %endif |
| lea mnsd, [r8 + 7] ; rcx = matrix_noise_shift + 7 |
| %endif ; cpuflag |
| sub auspd, 1 ; access_unit_size_pow2 -= 1 |
| cmp r7d, 4 ; is maxchan < 4? |
| lea index2q, [indexq*2 + 1] ; index2 = 2 * index + 1; |
| jl .loop4_shift ; jump if maxchan < 4 |
| |
| align 16 |
| .loop8_shift: |
| ; Process 5 or more channels |
| REMATRIX |
| LOOP_SHIFT_END |
| jne .loop8_shift |
| RET |
| |
| align 16 |
| .loop4_shift: |
| ; Process up to 4 channels |
| movdqa xm0, [samplesq] |
| movdqa xm1, [coeffsq ] |
| pshufd xm2, xm0, q2301 |
| pshufd xm3, xm1, q2301 |
| pmuldq xm0, xm1 |
| pmuldq xm3, xm2 |
| paddq xm0, xm3 |
| LOOP_SHIFT_END |
| jne .loop4_shift |
| RET |
| %endmacro |
| |
| INIT_XMM sse4 |
| MLP_REMATRIX_CHANNEL |
| %if HAVE_AVX2_EXTERNAL |
| INIT_YMM avx2, bmi2 |
| MLP_REMATRIX_CHANNEL |
| %endif |
| |
| %endif ; ARCH_X86_64 |
