;*
;* 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
+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;******************************************************************************
%include "x86inc.asm"
; 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
+pb_shuf_4dwb: db 0, 4, 8, 12
+
SECTION .text
;-----------------------------------------------------------------------------
%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
+cglobal ac3_compute_mantissa_size_sse2, 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_MMX 2 ; src/dst, tmp
+ pxor %2, %2
+ pcmpgtd %2, %1
+ pxor %1, %2
+ psubd %1, %2
+%endmacro
+
+%macro PABSD_SSSE3 1-2 ; src/dst, unused
+ pabsd %1, %1
+%endmacro
+
+%ifdef HAVE_AMD3DNOW
+INIT_MMX
+cglobal ac3_extract_exponents_3dnow, 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_MMX m0, m2
+ PABSD_MMX 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 1
+cglobal ac3_extract_exponents_%1, 3,3,5, exp, coef, len
+ add expq, lenq
+ lea coefq, [coefq+4*lenq]
+ neg lenq
+ mova m2, [pd_1]
+ mova m3, [pd_151]
+%ifidn %1, ssse3 ;
+ movd m4, [pb_shuf_4dwb]
+%endif
+.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
+%ifidn %1, ssse3
+ pshufb m0, m4
+%else
+ packssdw m0, m0
+ packuswb m0, m0
+%endif
+ movd [expq+lenq], m0
+
+ add lenq, 4
+ jl .loop
+ REP_RET
+%endmacro
+
+%ifdef HAVE_SSE
+INIT_XMM
+%define PABSD PABSD_MMX
+AC3_EXTRACT_EXPONENTS sse2
+%ifdef HAVE_SSSE3
+%define PABSD PABSD_SSSE3
+AC3_EXTRACT_EXPONENTS ssse3
+%endif
+%endif
projects / ffmpeg / blobdiff