mirror of https://github.com/mpv-player/mpv
309 lines
8.6 KiB
C
309 lines
8.6 KiB
C
/*
|
|
* mpg123_synth_1to1 works the same way as the c version of this
|
|
* file. only two types of changes have been made:
|
|
* - reordered floating point instructions to
|
|
* prevent pipline stalls
|
|
* - made WRITE_SAMPLE use integer instead of
|
|
* (slower) floating point
|
|
* all kinds of x86 processors should benefit from these
|
|
* modifications.
|
|
*
|
|
* useful sources of information on optimizing x86 code include:
|
|
*
|
|
* Intel Architecture Optimization Manual
|
|
* http://www.intel.com/design/pentium/manuals/242816.htm
|
|
*
|
|
* Cyrix 6x86 Instruction Set Summary
|
|
* ftp://ftp.cyrix.com/6x86/6x-dbch6.pdf
|
|
*
|
|
* AMD-K5 Processor Software Development
|
|
* http://www.amd.com/products/cpg/techdocs/appnotes/20007e.pdf
|
|
*
|
|
* Stefan Bieschewski <stb@acm.org>
|
|
*
|
|
* $Id$
|
|
*/
|
|
#include "../mangle.h"
|
|
#define real float /* ugly - but only way */
|
|
|
|
static long buffs[1088];
|
|
static long bo=1;
|
|
|
|
int synth_1to1_pent(real *bandPtr, int channel, short *samples)
|
|
{
|
|
real tmp[3];
|
|
register int retval;
|
|
__asm __volatile(
|
|
" movl %1,%%eax\n\t"/*bandPtr*/
|
|
" movl %3,%%esi\n\t"
|
|
" xorl %%edi,%%edi\n\t"
|
|
" movl "MANGLE(bo)",%%ebp\n\t"
|
|
" cmpl %%edi,%2\n\t"
|
|
" jne .L48\n\t"
|
|
" decl %%ebp\n\t"
|
|
" andl $15,%%ebp\n\t"
|
|
" movl %%ebp,"MANGLE(bo)"\n\t"
|
|
" movl $"MANGLE(buffs)",%%ecx\n\t"
|
|
" jmp .L49\n\t"
|
|
".L48:\n\t"
|
|
" addl $2,%%esi\n\t"
|
|
" movl $"MANGLE(buffs)"+2176,%%ecx\n\t"
|
|
".L49:\n\t"
|
|
" testl $1,%%ebp\n\t"
|
|
" je .L50\n\t"
|
|
" movl %%ecx,%%ebx\n\t"
|
|
" movl %%ebp,%4\n\t"
|
|
" pushl %%eax\n\t"
|
|
" movl 4+%4,%%edx\n\t"
|
|
" leal (%%ebx,%%edx,4),%%eax\n\t"
|
|
" pushl %%eax\n\t"
|
|
" movl 8+%4,%%eax\n\t"
|
|
" incl %%eax\n\t"
|
|
" andl $15,%%eax\n\t"
|
|
" leal 1088(,%%eax,4),%%eax\n\t"
|
|
" addl %%ebx,%%eax\n\t"
|
|
" jmp .L74\n\t"
|
|
".L50:\n\t"
|
|
" leal 1088(%%ecx),%%ebx\n\t"
|
|
" leal 1(%%ebp),%%edx\n\t"
|
|
" movl %%edx,%4\n\t"
|
|
" pushl %%eax\n\t"
|
|
" leal 1092(%%ecx,%%ebp,4),%%eax\n\t"
|
|
" pushl %%eax\n\t"
|
|
" leal (%%ecx,%%ebp,4),%%eax\n\t"
|
|
".L74:\n\t"
|
|
" pushl %%eax\n\t"
|
|
" call "MANGLE(dct64)"\n\t"
|
|
" addl $12,%%esp\n\t"
|
|
" movl %4,%%edx\n\t"
|
|
" leal 0(,%%edx,4),%%edx\n\t"
|
|
" movl $"MANGLE(decwin)"+64,%%eax\n\t"
|
|
" movl %%eax,%%ecx\n\t"
|
|
" subl %%edx,%%ecx\n\t"
|
|
" movl $16,%%ebp\n\t"
|
|
".L55:\n\t"
|
|
" flds (%%ecx)\n\t"
|
|
" fmuls (%%ebx)\n\t"
|
|
" flds 4(%%ecx)\n\t"
|
|
" fmuls 4(%%ebx)\n\t"
|
|
" fxch %%st(1)\n\t"
|
|
" flds 8(%%ecx)\n\t"
|
|
" fmuls 8(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds 12(%%ecx)\n\t"
|
|
" fmuls 12(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" faddp %%st,%%st(1)\n\t"
|
|
" flds 16(%%ecx)\n\t"
|
|
" fmuls 16(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds 20(%%ecx)\n\t"
|
|
" fmuls 20(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" faddp %%st,%%st(1)\n\t"
|
|
" flds 24(%%ecx)\n\t"
|
|
" fmuls 24(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds 28(%%ecx)\n\t"
|
|
" fmuls 28(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" faddp %%st,%%st(1)\n\t"
|
|
" flds 32(%%ecx)\n\t"
|
|
" fmuls 32(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds 36(%%ecx)\n\t"
|
|
" fmuls 36(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" faddp %%st,%%st(1)\n\t"
|
|
" flds 40(%%ecx)\n\t"
|
|
" fmuls 40(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds 44(%%ecx)\n\t"
|
|
" fmuls 44(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" faddp %%st,%%st(1)\n\t"
|
|
" flds 48(%%ecx)\n\t"
|
|
" fmuls 48(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds 52(%%ecx)\n\t"
|
|
" fmuls 52(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" faddp %%st,%%st(1)\n\t"
|
|
" flds 56(%%ecx)\n\t"
|
|
" fmuls 56(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds 60(%%ecx)\n\t"
|
|
" fmuls 60(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" subl $4,%%esp\n\t"
|
|
" faddp %%st,%%st(1)\n\t"
|
|
" fxch %%st(1)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" fistpl (%%esp)\n\t"
|
|
" popl %%eax\n\t"
|
|
" cmpl $32767,%%eax\n\t"
|
|
" jg 1f\n\t"
|
|
" cmpl $-32768,%%eax\n\t"
|
|
" jl 2f\n\t"
|
|
" movw %%ax,(%%esi)\n\t"
|
|
" jmp 4f\n\t"
|
|
"1: movw $32767,(%%esi)\n\t"
|
|
" jmp 3f\n\t"
|
|
"2: movw $-32768,(%%esi)\n\t"
|
|
"3: incl %%edi\n\t"
|
|
"4:\n\t"
|
|
".L54:\n\t"
|
|
" addl $64,%%ebx\n\t"
|
|
" subl $-128,%%ecx\n\t"
|
|
" addl $4,%%esi\n\t"
|
|
" decl %%ebp\n\t"
|
|
" jnz .L55\n\t"
|
|
" flds (%%ecx)\n\t"
|
|
" fmuls (%%ebx)\n\t"
|
|
" flds 8(%%ecx)\n\t"
|
|
" fmuls 8(%%ebx)\n\t"
|
|
" flds 16(%%ecx)\n\t"
|
|
" fmuls 16(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" faddp %%st,%%st(1)\n\t"
|
|
" flds 24(%%ecx)\n\t"
|
|
" fmuls 24(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" faddp %%st,%%st(1)\n\t"
|
|
" flds 32(%%ecx)\n\t"
|
|
" fmuls 32(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" faddp %%st,%%st(1)\n\t"
|
|
" flds 40(%%ecx)\n\t"
|
|
" fmuls 40(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" faddp %%st,%%st(1)\n\t"
|
|
" flds 48(%%ecx)\n\t"
|
|
" fmuls 48(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" faddp %%st,%%st(1)\n\t"
|
|
" flds 56(%%ecx)\n\t"
|
|
" fmuls 56(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" subl $4,%%esp\n\t"
|
|
" faddp %%st,%%st(1)\n\t"
|
|
" fxch %%st(1)\n\t"
|
|
" faddp %%st,%%st(1)\n\t"
|
|
" fistpl (%%esp)\n\t"
|
|
" popl %%eax\n\t"
|
|
" cmpl $32767,%%eax\n\t"
|
|
" jg 1f\n\t"
|
|
" cmpl $-32768,%%eax\n\t"
|
|
" jl 2f\n\t"
|
|
" movw %%ax,(%%esi)\n\t"
|
|
" jmp 4f\n\t"
|
|
"1: movw $32767,(%%esi)\n\t"
|
|
" jmp 3f\n\t"
|
|
"2: movw $-32768,(%%esi)\n\t"
|
|
"3: incl %%edi\n\t"
|
|
"4:\n\t"
|
|
".L62:\n\t"
|
|
" addl $-64,%%ebx\n\t"
|
|
" addl $4,%%esi\n\t"
|
|
" movl %4,%%edx\n\t"
|
|
" leal -128(%%ecx,%%edx,8),%%ecx\n\t"
|
|
" movl $15,%%ebp\n\t"
|
|
".L68:\n\t"
|
|
" flds -4(%%ecx)\n\t"
|
|
" fchs\n\t"
|
|
" fmuls (%%ebx)\n\t"
|
|
" flds -8(%%ecx)\n\t"
|
|
" fmuls 4(%%ebx)\n\t"
|
|
" fxch %%st(1)\n\t"
|
|
" flds -12(%%ecx)\n\t"
|
|
" fmuls 8(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds -16(%%ecx)\n\t"
|
|
" fmuls 12(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds -20(%%ecx)\n\t"
|
|
" fmuls 16(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds -24(%%ecx)\n\t"
|
|
" fmuls 20(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds -28(%%ecx)\n\t"
|
|
" fmuls 24(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds -32(%%ecx)\n\t"
|
|
" fmuls 28(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds -36(%%ecx)\n\t"
|
|
" fmuls 32(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds -40(%%ecx)\n\t"
|
|
" fmuls 36(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds -44(%%ecx)\n\t"
|
|
" fmuls 40(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds -48(%%ecx)\n\t"
|
|
" fmuls 44(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds -52(%%ecx)\n\t"
|
|
" fmuls 48(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds -56(%%ecx)\n\t"
|
|
" fmuls 52(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds -60(%%ecx)\n\t"
|
|
" fmuls 56(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" flds (%%ecx)\n\t"
|
|
" fmuls 60(%%ebx)\n\t"
|
|
" fxch %%st(2)\n\t"
|
|
" subl $4,%%esp\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" fxch %%st(1)\n\t"
|
|
" fsubrp %%st,%%st(1)\n\t"
|
|
" fistpl (%%esp)\n\t"
|
|
" popl %%eax\n\t"
|
|
" cmpl $32767,%%eax\n\t"
|
|
" jg 1f\n\t"
|
|
" cmpl $-32768,%%eax\n\t"
|
|
" jl 2f\n\t"
|
|
" movw %%ax,(%%esi)\n\t"
|
|
" jmp 4f\n\t"
|
|
"1: movw $32767,(%%esi)\n\t"
|
|
" jmp 3f\n\t"
|
|
"2: movw $-32768,(%%esi)\n\t"
|
|
"3: incl %%edi\n\t"
|
|
"4:\n\t"
|
|
".L67:\n\t"
|
|
" addl $-64,%%ebx\n\t"
|
|
" addl $-128,%%ecx\n\t"
|
|
" addl $4,%%esi\n\t"
|
|
" decl %%ebp\n\t"
|
|
" jnz .L68\n\t"
|
|
" movl %%edi,%%eax\n\t"
|
|
:"=a"(retval)
|
|
:"m"(bandPtr),"m"(channel),"m"(samples),"m"(tmp[0])
|
|
:"memory","%ebp","%edi","%esi","%ebx");
|
|
return retval;
|
|
}
|