;* x86-optimized AC-3 DSP utils
;* Copyright (c) 2011 Justin Ruggles
;*
-;* This file is part of FFmpeg.
+;* This file is part of Libav.
;*
-;* FFmpeg is free software; you can redistribute it and/or
+;* 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.
;*
-;* FFmpeg is distributed in the hope that it will be useful,
+;* 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 FFmpeg; if not, write to the Free Software
-;* 51, Inc., Foundation Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;* License along with Libav; if not, write to the Free Software
+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;******************************************************************************
-%include "x86inc.asm"
-%include "x86util.asm"
+%include "libavutil/x86/x86util.asm"
SECTION_RODATA
; 16777216.0f - used in ff_float_to_fixed24()
pf_1_24: times 4 dd 0x4B800000
+; used in ff_ac3_compute_mantissa_size()
+cextern ac3_bap_bits
+pw_bap_mul1: dw 21846, 21846, 0, 32768, 21846, 21846, 0, 32768
+pw_bap_mul2: dw 5, 7, 0, 7, 5, 7, 0, 7
+
+; used in ff_ac3_extract_exponents()
+pd_1: times 4 dd 1
+pd_151: times 4 dd 151
+
SECTION .text
;-----------------------------------------------------------------------------
; void ff_ac3_exponent_min(uint8_t *exp, int num_reuse_blocks, int nb_coefs)
;-----------------------------------------------------------------------------
-%macro AC3_EXPONENT_MIN 1
-cglobal ac3_exponent_min_%1, 3,4,2, exp, reuse_blks, expn, offset
+%macro AC3_EXPONENT_MIN 0
+cglobal ac3_exponent_min, 3, 4, 2, exp, reuse_blks, expn, offset
shl reuse_blksq, 8
jz .end
LOOP_ALIGN
REP_RET
%endmacro
-%define PMINUB PMINUB_MMX
%define LOOP_ALIGN
-INIT_MMX
-AC3_EXPONENT_MIN mmx
-%ifdef HAVE_MMX2
-%define PMINUB PMINUB_MMXEXT
+INIT_MMX mmx
+AC3_EXPONENT_MIN
+%if HAVE_MMXEXT
%define LOOP_ALIGN ALIGN 16
-AC3_EXPONENT_MIN mmxext
+INIT_MMX mmxext
+AC3_EXPONENT_MIN
%endif
-%ifdef HAVE_SSE
-INIT_XMM
-AC3_EXPONENT_MIN sse2
+%if HAVE_SSE2_EXTERNAL
+INIT_XMM sse2
+AC3_EXPONENT_MIN
%endif
-%undef PMINUB
%undef LOOP_ALIGN
;-----------------------------------------------------------------------------
; This is used for mmxext and sse2 because they have pminsw/pmaxsw.
;-----------------------------------------------------------------------------
-%macro AC3_MAX_MSB_ABS_INT16 2
-cglobal ac3_max_msb_abs_int16_%1, 2,2,5, src, len
+; logical 'or' of 4 or 8 words in an mmx or xmm register into the low word
+%macro OR_WORDS_HORIZ 2 ; src, tmp
+%if cpuflag(sse2)
+ movhlps %2, %1
+ por %1, %2
+ pshuflw %2, %1, q0032
+ por %1, %2
+ pshuflw %2, %1, q0001
+ por %1, %2
+%elif cpuflag(mmx2)
+ pshufw %2, %1, q0032
+ por %1, %2
+ pshufw %2, %1, q0001
+ por %1, %2
+%else ; mmx
+ movq %2, %1
+ psrlq %2, 32
+ por %1, %2
+ movq %2, %1
+ psrlq %2, 16
+ por %1, %2
+%endif
+%endmacro
+
+%macro AC3_MAX_MSB_ABS_INT16 1
+cglobal ac3_max_msb_abs_int16, 2,2,5, src, len
pxor m2, m2
pxor m3, m3
.loop:
-%ifidn %2, min_max
+%ifidn %1, min_max
mova m0, [srcq]
mova m1, [srcq+mmsize]
pminsw m2, m0
pmaxsw m3, m0
pmaxsw m3, m1
%else ; or_abs
-%ifidn %1, mmx
+%if notcpuflag(ssse3)
mova m0, [srcq]
mova m1, [srcq+mmsize]
ABS2 m0, m1, m3, m4
add srcq, mmsize*2
sub lend, mmsize
ja .loop
-%ifidn %2, min_max
+%ifidn %1, min_max
ABS2 m2, m3, m0, m1
por m2, m3
%endif
-%ifidn mmsize, 16
- movhlps m0, m2
- por m2, m0
-%endif
- PSHUFLW m0, m2, 0xe
- por m2, m0
- PSHUFLW m0, m2, 0x1
- por m2, m0
+ OR_WORDS_HORIZ m2, m0
movd eax, m2
and eax, 0xFFFF
RET
%endmacro
-INIT_MMX
+INIT_MMX mmx
%define ABS2 ABS2_MMX
-%define PSHUFLW pshufw
-AC3_MAX_MSB_ABS_INT16 mmx, or_abs
-%define ABS2 ABS2_MMX2
-AC3_MAX_MSB_ABS_INT16 mmxext, min_max
-INIT_XMM
-%define PSHUFLW pshuflw
-AC3_MAX_MSB_ABS_INT16 sse2, min_max
+AC3_MAX_MSB_ABS_INT16 or_abs
+INIT_MMX mmx2
+%define ABS2 ABS2_MMXEXT
+AC3_MAX_MSB_ABS_INT16 min_max
+INIT_XMM sse2
+AC3_MAX_MSB_ABS_INT16 min_max
+INIT_XMM ssse3
%define ABS2 ABS2_SSSE3
-AC3_MAX_MSB_ABS_INT16 ssse3, or_abs
+AC3_MAX_MSB_ABS_INT16 or_abs
;-----------------------------------------------------------------------------
; macro used for ff_ac3_lshift_int16() and ff_ac3_rshift_int32()
;-----------------------------------------------------------------------------
-%macro AC3_SHIFT 4 ; l/r, 16/32, shift instruction, instruction set
-cglobal ac3_%1shift_int%2_%4, 3,3,5, src, len, shift
+%macro AC3_SHIFT 3 ; l/r, 16/32, shift instruction, instruction set
+cglobal ac3_%1shift_int%2, 3, 3, 5, src, len, shift
movd m0, shiftd
.loop:
mova m1, [srcq ]
; void ff_ac3_lshift_int16(int16_t *src, unsigned int len, unsigned int shift)
;-----------------------------------------------------------------------------
-INIT_MMX
-AC3_SHIFT l, 16, psllw, mmx
-INIT_XMM
-AC3_SHIFT l, 16, psllw, sse2
+INIT_MMX mmx
+AC3_SHIFT l, 16, psllw
+INIT_XMM sse2
+AC3_SHIFT l, 16, psllw
;-----------------------------------------------------------------------------
; void ff_ac3_rshift_int32(int32_t *src, unsigned int len, unsigned int shift)
;-----------------------------------------------------------------------------
-INIT_MMX
-AC3_SHIFT r, 32, psrad, mmx
-INIT_XMM
-AC3_SHIFT r, 32, psrad, sse2
+INIT_MMX mmx
+AC3_SHIFT r, 32, psrad
+INIT_XMM sse2
+AC3_SHIFT r, 32, psrad
;-----------------------------------------------------------------------------
; void ff_float_to_fixed24(int32_t *dst, const float *src, unsigned int len)
; The 3DNow! version is not bit-identical because pf2id uses truncation rather
; than round-to-nearest.
-INIT_MMX
-cglobal float_to_fixed24_3dnow, 3,3,0, dst, src, len
+INIT_MMX 3dnow
+cglobal float_to_fixed24, 3, 3, 0, dst, src, len
movq m0, [pf_1_24]
.loop:
movq m1, [srcq ]
add dstq, 32
sub lend, 8
ja .loop
- REP_RET
+ femms
+ RET
-INIT_XMM
-cglobal float_to_fixed24_sse, 3,3,3, dst, src, len
+INIT_XMM sse
+cglobal float_to_fixed24, 3, 3, 3, dst, src, len
movaps m0, [pf_1_24]
.loop:
movaps m1, [srcq ]
add dstq, 32
sub lend, 8
ja .loop
- REP_RET
+ emms
+ RET
-INIT_XMM
-cglobal float_to_fixed24_sse2, 3,3,9, dst, src, len
+INIT_XMM sse2
+cglobal float_to_fixed24, 3, 3, 9, dst, src, len
movaps m0, [pf_1_24]
.loop:
movaps m1, [srcq ]
%endif
ja .loop
REP_RET
+
+;------------------------------------------------------------------------------
+; int ff_ac3_compute_mantissa_size(uint16_t mant_cnt[6][16])
+;------------------------------------------------------------------------------
+
+%macro PHADDD4 2 ; xmm src, xmm tmp
+ movhlps %2, %1
+ paddd %1, %2
+ pshufd %2, %1, 0x1
+ paddd %1, %2
+%endmacro
+
+INIT_XMM sse2
+cglobal ac3_compute_mantissa_size, 1, 2, 4, mant_cnt, sum
+ movdqa m0, [mant_cntq ]
+ movdqa m1, [mant_cntq+ 1*16]
+ paddw m0, [mant_cntq+ 2*16]
+ paddw m1, [mant_cntq+ 3*16]
+ paddw m0, [mant_cntq+ 4*16]
+ paddw m1, [mant_cntq+ 5*16]
+ paddw m0, [mant_cntq+ 6*16]
+ paddw m1, [mant_cntq+ 7*16]
+ paddw m0, [mant_cntq+ 8*16]
+ paddw m1, [mant_cntq+ 9*16]
+ paddw m0, [mant_cntq+10*16]
+ paddw m1, [mant_cntq+11*16]
+ pmaddwd m0, [ac3_bap_bits ]
+ pmaddwd m1, [ac3_bap_bits+16]
+ paddd m0, m1
+ PHADDD4 m0, m1
+ movd sumd, m0
+ movdqa m3, [pw_bap_mul1]
+ movhpd m0, [mant_cntq +2]
+ movlpd m0, [mant_cntq+1*32+2]
+ movhpd m1, [mant_cntq+2*32+2]
+ movlpd m1, [mant_cntq+3*32+2]
+ movhpd m2, [mant_cntq+4*32+2]
+ movlpd m2, [mant_cntq+5*32+2]
+ pmulhuw m0, m3
+ pmulhuw m1, m3
+ pmulhuw m2, m3
+ paddusw m0, m1
+ paddusw m0, m2
+ pmaddwd m0, [pw_bap_mul2]
+ PHADDD4 m0, m1
+ movd eax, m0
+ add eax, sumd
+ RET
+
+;------------------------------------------------------------------------------
+; void ff_ac3_extract_exponents(uint8_t *exp, int32_t *coef, int nb_coefs)
+;------------------------------------------------------------------------------
+
+%macro PABSD 1-2 ; src/dst, unused
+%if cpuflag(ssse3)
+ pabsd %1, %1
+%else ; src/dst, tmp
+ pxor %2, %2
+ pcmpgtd %2, %1
+ pxor %1, %2
+ psubd %1, %2
+%endif
+%endmacro
+
+%if HAVE_AMD3DNOW_EXTERNAL
+INIT_MMX 3dnow
+cglobal ac3_extract_exponents, 3, 3, 0, exp, coef, len
+ add expq, lenq
+ lea coefq, [coefq+4*lenq]
+ neg lenq
+ movq m3, [pd_1]
+ movq m4, [pd_151]
+.loop:
+ movq m0, [coefq+4*lenq ]
+ movq m1, [coefq+4*lenq+8]
+ PABSD m0, m2
+ PABSD m1, m2
+ pslld m0, 1
+ por m0, m3
+ pi2fd m2, m0
+ psrld m2, 23
+ movq m0, m4
+ psubd m0, m2
+ pslld m1, 1
+ por m1, m3
+ pi2fd m2, m1
+ psrld m2, 23
+ movq m1, m4
+ psubd m1, m2
+ packssdw m0, m0
+ packuswb m0, m0
+ packssdw m1, m1
+ packuswb m1, m1
+ punpcklwd m0, m1
+ movd [expq+lenq], m0
+ add lenq, 4
+ jl .loop
+ REP_RET
+%endif
+
+%macro AC3_EXTRACT_EXPONENTS 0
+cglobal ac3_extract_exponents, 3, 3, 4, exp, coef, len
+ add expq, lenq
+ lea coefq, [coefq+4*lenq]
+ neg lenq
+ mova m2, [pd_1]
+ mova m3, [pd_151]
+.loop:
+ ; move 4 32-bit coefs to xmm0
+ mova m0, [coefq+4*lenq]
+ ; absolute value
+ PABSD m0, m1
+ ; convert to float and extract exponents
+ pslld m0, 1
+ por m0, m2
+ cvtdq2ps m1, m0
+ psrld m1, 23
+ mova m0, m3
+ psubd m0, m1
+ ; move the lowest byte in each of 4 dwords to the low dword
+ ; NOTE: We cannot just extract the low bytes with pshufb because the dword
+ ; result for 16777215 is -1 due to float inaccuracy. Using packuswb
+ ; clips this to 0, which is the correct exponent.
+ packssdw m0, m0
+ packuswb m0, m0
+ movd [expq+lenq], m0
+
+ add lenq, 4
+ jl .loop
+ REP_RET
+%endmacro
+
+%if HAVE_SSE2_EXTERNAL
+INIT_XMM sse2
+AC3_EXTRACT_EXPONENTS
+%endif
+%if HAVE_SSSE3_EXTERNAL
+INIT_XMM ssse3
+AC3_EXTRACT_EXPONENTS
+%endif
projects / ffmpeg / blobdiff