| /* |
| * 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 "libavutil/x86_cpu.h" |
| #include "libavcodec/dsputil.h" |
| #include "libavcodec/mlp.h" |
| |
| #if HAVE_7REGS |
| |
| extern void ff_mlp_firorder_8; |
| extern void ff_mlp_firorder_7; |
| extern void ff_mlp_firorder_6; |
| extern void ff_mlp_firorder_5; |
| extern void ff_mlp_firorder_4; |
| extern void ff_mlp_firorder_3; |
| extern void ff_mlp_firorder_2; |
| extern void ff_mlp_firorder_1; |
| extern void ff_mlp_firorder_0; |
| |
| extern void ff_mlp_iirorder_4; |
| extern void ff_mlp_iirorder_3; |
| extern void ff_mlp_iirorder_2; |
| extern void ff_mlp_iirorder_1; |
| extern void ff_mlp_iirorder_0; |
| |
| static const void *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 *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 ) |
| FIRMULREG(ff_mlp_firorder_3, 0x08,10) |
| FIRMULREG(ff_mlp_firorder_2, 0x04, 9) |
| 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]) |
| , /* 9*/"r"((int64_t)coeff[1]) |
| , /*10*/"r"((int64_t)coeff[2]) |
| : "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 */ |
| |
| void ff_mlp_init_x86(DSPContext* c, AVCodecContext *avctx) |
| { |
| #if HAVE_7REGS |
| c->mlp_filter_channel = mlp_filter_channel_x86; |
| #endif |
| } |
