mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
187 lines
6.4 KiB
187 lines
6.4 KiB
/* |
|
* MLP DSP functions x86-optimized |
|
* Copyright (c) 2009 Ramiro Polla |
|
* |
|
* 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/attributes.h" |
|
#include "libavutil/internal.h" |
|
#include "libavutil/cpu.h" |
|
#include "libavutil/x86/asm.h" |
|
#include "libavutil/x86/cpu.h" |
|
#include "libavcodec/mlpdsp.h" |
|
#include "libavcodec/mlp.h" |
|
|
|
#if HAVE_7REGS && HAVE_INLINE_ASM |
|
|
|
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 ) |
|
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 && HAVE_INLINE_ASM */ |
|
|
|
av_cold void ff_mlpdsp_init_x86(MLPDSPContext *c) |
|
{ |
|
#if HAVE_7REGS && HAVE_INLINE_ASM |
|
int cpu_flags = av_get_cpu_flags(); |
|
if (INLINE_MMX(cpu_flags)) |
|
c->mlp_filter_channel = mlp_filter_channel_x86; |
|
#endif |
|
}
|
|
|