/* * MLP DSP functions x86-optimized * Copyright (c) 2009 Ramiro Polla * * 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 #include "config.h" #include "libavutil/attributes.h" #include "libavutil/cpu.h" #include "libavutil/macros.h" #include "libavutil/x86/asm.h" #include "libavutil/x86/cpu.h" #include "libavcodec/mlpdsp.h" #include "libavcodec/mlp.h" #define REMATRIX_CHANNEL_FUNC(opt) \ void ff_mlp_rematrix_channel_##opt(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); REMATRIX_CHANNEL_FUNC(sse4) REMATRIX_CHANNEL_FUNC(avx2_bmi2) #if HAVE_7REGS && HAVE_INLINE_ASM && HAVE_INLINE_ASM_NONLOCAL_LABELS extern char ff_mlp_firorder_8; extern char ff_mlp_firorder_7; extern char ff_mlp_firorder_6; extern char ff_mlp_firorder_5; extern char ff_mlp_firorder_4; extern char ff_mlp_firorder_3; extern char ff_mlp_firorder_2; extern char ff_mlp_firorder_1; extern char ff_mlp_firorder_0; extern char ff_mlp_iirorder_4; extern char ff_mlp_iirorder_3; extern char ff_mlp_iirorder_2; extern char ff_mlp_iirorder_1; extern char ff_mlp_iirorder_0; static const void * const firtable[9] = { &ff_mlp_firorder_0, &ff_mlp_firorder_1, &ff_mlp_firorder_2, &ff_mlp_firorder_3, &ff_mlp_firorder_4, &ff_mlp_firorder_5, &ff_mlp_firorder_6, &ff_mlp_firorder_7, &ff_mlp_firorder_8 }; static const void * const iirtable[5] = { &ff_mlp_iirorder_0, &ff_mlp_iirorder_1, &ff_mlp_iirorder_2, &ff_mlp_iirorder_3, &ff_mlp_iirorder_4 }; #if ARCH_X86_64 #define MLPMUL(label, offset, offs, offc) \ LABEL_MANGLE(label)": \n\t" \ "movslq "offset"+"offs"(%0), %%rax\n\t" \ "movslq "offset"+"offc"(%1), %%rdx\n\t" \ "imul %%rdx, %%rax\n\t" \ "add %%rax, %%rsi\n\t" #define FIRMULREG(label, offset, firc)\ LABEL_MANGLE(label)": \n\t" \ "movslq "#offset"(%0), %%rax\n\t" \ "imul %"#firc", %%rax\n\t" \ "add %%rax, %%rsi\n\t" #define CLEAR_ACCUM \ "xor %%rsi, %%rsi\n\t" #define SHIFT_ACCUM \ "shr %%cl, %%rsi\n\t" #define ACCUM "%%rdx" #define RESULT "%%rsi" #define RESULT32 "%%esi" #else /* if ARCH_X86_32 */ #define MLPMUL(label, offset, offs, offc) \ LABEL_MANGLE(label)": \n\t" \ "mov "offset"+"offs"(%0), %%eax\n\t" \ "imull "offset"+"offc"(%1) \n\t" \ "add %%eax , %%esi\n\t" \ "adc %%edx , %%ecx\n\t" #define FIRMULREG(label, offset, firc) \ MLPMUL(label, #offset, "0", "0") #define CLEAR_ACCUM \ "xor %%esi, %%esi\n\t" \ "xor %%ecx, %%ecx\n\t" #define SHIFT_ACCUM \ "mov %%ecx, %%edx\n\t" \ "mov %%esi, %%eax\n\t" \ "movzbl %7 , %%ecx\n\t" \ "shrd %%cl, %%edx, %%eax\n\t" \ #define ACCUM "%%edx" #define RESULT "%%eax" #define RESULT32 "%%eax" #endif /* !ARCH_X86_64 */ #define BINC AV_STRINGIFY(4* MAX_CHANNELS) #define IOFFS AV_STRINGIFY(4*(MAX_FIR_ORDER + MAX_BLOCKSIZE)) #define IOFFC AV_STRINGIFY(4* MAX_FIR_ORDER) #define FIRMUL(label, offset) MLPMUL(label, #offset, "0", "0") #define IIRMUL(label, offset) MLPMUL(label, #offset, IOFFS, IOFFC) static void mlp_filter_channel_x86(int32_t *state, const int32_t *coeff, int firorder, int iirorder, unsigned int filter_shift, int32_t mask, int blocksize, int32_t *sample_buffer) { const void *firjump = firtable[firorder]; const void *iirjump = iirtable[iirorder]; blocksize = -blocksize; __asm__ volatile( "1: \n\t" CLEAR_ACCUM "jmp *%5 \n\t" FIRMUL (ff_mlp_firorder_8, 0x1c ) FIRMUL (ff_mlp_firorder_7, 0x18 ) FIRMUL (ff_mlp_firorder_6, 0x14 ) FIRMUL (ff_mlp_firorder_5, 0x10 ) FIRMUL (ff_mlp_firorder_4, 0x0c ) FIRMUL (ff_mlp_firorder_3, 0x08 ) FIRMUL (ff_mlp_firorder_2, 0x04 ) FIRMULREG(ff_mlp_firorder_1, 0x00, 8) LABEL_MANGLE(ff_mlp_firorder_0)":\n\t" "jmp *%6 \n\t" IIRMUL (ff_mlp_iirorder_4, 0x0c ) IIRMUL (ff_mlp_iirorder_3, 0x08 ) IIRMUL (ff_mlp_iirorder_2, 0x04 ) IIRMUL (ff_mlp_iirorder_1, 0x00 ) LABEL_MANGLE(ff_mlp_iirorder_0)":\n\t" SHIFT_ACCUM "mov "RESULT" ,"ACCUM" \n\t" "add (%2) ,"RESULT" \n\t" "and %4 ,"RESULT" \n\t" "sub $4 , %0 \n\t" "mov "RESULT32", (%0) \n\t" "mov "RESULT32", (%2) \n\t" "add $"BINC" , %2 \n\t" "sub "ACCUM" ,"RESULT" \n\t" "mov "RESULT32","IOFFS"(%0) \n\t" "incl %3 \n\t" "js 1b \n\t" : /* 0*/"+r"(state), /* 1*/"+r"(coeff), /* 2*/"+r"(sample_buffer), #if ARCH_X86_64 /* 3*/"+r"(blocksize) : /* 4*/"r"((x86_reg)mask), /* 5*/"r"(firjump), /* 6*/"r"(iirjump) , /* 7*/"c"(filter_shift) , /* 8*/"r"((int64_t)coeff[0]) : "rax", "rdx", "rsi" #else /* ARCH_X86_32 */ /* 3*/"+m"(blocksize) : /* 4*/"m"( mask), /* 5*/"m"(firjump), /* 6*/"m"(iirjump) , /* 7*/"m"(filter_shift) : "eax", "edx", "esi", "ecx" #endif /* !ARCH_X86_64 */ ); } #endif /* HAVE_7REGS && HAVE_INLINE_ASM */ av_cold void ff_mlpdsp_init_x86(MLPDSPContext *c) { int cpu_flags = av_get_cpu_flags(); #if HAVE_7REGS && HAVE_INLINE_ASM && HAVE_INLINE_ASM_NONLOCAL_LABELS if (INLINE_MMX(cpu_flags)) c->mlp_filter_channel = mlp_filter_channel_x86; #endif if (ARCH_X86_64 && EXTERNAL_SSE4(cpu_flags)) c->mlp_rematrix_channel = ff_mlp_rematrix_channel_sse4; if (ARCH_X86_64 && EXTERNAL_AVX2_FAST(cpu_flags) && cpu_flags & AV_CPU_FLAG_BMI2) c->mlp_rematrix_channel = ff_mlp_rematrix_channel_avx2_bmi2; }