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+;******************************************************************************
+;* MMX/SSE2-optimized functions for the RV40 decoder
+;* Copyright (c) 2010 Ronald S. Bultje <rsbultje@gmail.com>
+;* Copyright (c) 2010 Jason Garrett-Glaser <darkshikari@gmail.com>
+;* Copyright (C) 2012 Christophe Gisquet <christophe.gisquet@gmail.com>
+;*
+;* 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/x86/x86util.asm"
+
+SECTION_RODATA
+
+align 16
+pw_1024: times 8 dw 1 << (16 - 6) ; pw_1024
+
+sixtap_filter_hb_m: times 8 db 1, -5
+ times 8 db 52, 20
+ ; multiplied by 2 to have the same shift
+ times 8 db 2, -10
+ times 8 db 40, 40
+ ; back to normal
+ times 8 db 1, -5
+ times 8 db 20, 52
+
+sixtap_filter_v_m: times 8 dw 1
+ times 8 dw -5
+ times 8 dw 52
+ times 8 dw 20
+ ; multiplied by 2 to have the same shift
+ times 8 dw 2
+ times 8 dw -10
+ times 8 dw 40
+ times 8 dw 40
+ ; back to normal
+ times 8 dw 1
+ times 8 dw -5
+ times 8 dw 20
+ times 8 dw 52
+
+%ifdef PIC
+%define sixtap_filter_hw picregq
+%define sixtap_filter_hb picregq
+%define sixtap_filter_v picregq
+%define npicregs 1
+%else
+%define sixtap_filter_hw sixtap_filter_hw_m
+%define sixtap_filter_hb sixtap_filter_hb_m
+%define sixtap_filter_v sixtap_filter_v_m
+%define npicregs 0
+%endif
+
+filter_h6_shuf1: db 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8
+filter_h6_shuf2: db 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10
+filter_h6_shuf3: db 5, 4, 6, 5, 7, 6, 8, 7, 9, 8, 10, 9, 11, 10, 12, 11
+
+cextern pw_32
+cextern pw_16
+cextern pw_512
+
+SECTION .text
+
+;-----------------------------------------------------------------------------
+; subpel MC functions:
+;
+; void [put|rv40]_rv40_qpel_[h|v]_<opt>(uint8_t *dst, int deststride,
+; uint8_t *src, int srcstride,
+; int len, int m);
+;----------------------------------------------------------------------
+%macro LOAD 2
+%if WIN64
+ movsxd %1q, %1d
+%endif
+%ifdef PIC
+ add %1q, picregq
+%else
+ add %1q, %2
+%endif
+%endmacro
+
+%macro STORE 3
+%ifidn %3, avg
+ movh %2, [dstq]
+%endif
+ packuswb %1, %1
+%ifidn %3, avg
+%if cpuflag(3dnow)
+ pavgusb %1, %2
+%else
+ pavgb %1, %2
+%endif
+%endif
+ movh [dstq], %1
+%endmacro
+
+%macro FILTER_V 1
+cglobal %1_rv40_qpel_v, 6,6+npicregs,12, dst, dststride, src, srcstride, height, my, picreg
+%ifdef PIC
+ lea picregq, [sixtap_filter_v_m]
+%endif
+ pxor m7, m7
+ LOAD my, sixtap_filter_v
+
+ ; read 5 lines
+ sub srcq, srcstrideq
+ sub srcq, srcstrideq
+ movh m0, [srcq]
+ movh m1, [srcq+srcstrideq]
+ movh m2, [srcq+srcstrideq*2]
+ lea srcq, [srcq+srcstrideq*2]
+ add srcq, srcstrideq
+ movh m3, [srcq]
+ movh m4, [srcq+srcstrideq]
+ punpcklbw m0, m7
+ punpcklbw m1, m7
+ punpcklbw m2, m7
+ punpcklbw m3, m7
+ punpcklbw m4, m7
+
+%ifdef m8
+ mova m8, [myq+ 0]
+ mova m9, [myq+16]
+ mova m10, [myq+32]
+ mova m11, [myq+48]
+%define COEFF05 m8
+%define COEFF14 m9
+%define COEFF2 m10
+%define COEFF3 m11
+%else
+%define COEFF05 [myq+ 0]
+%define COEFF14 [myq+16]
+%define COEFF2 [myq+32]
+%define COEFF3 [myq+48]
+%endif
+.nextrow:
+ mova m6, m1
+ movh m5, [srcq+2*srcstrideq] ; read new row
+ paddw m6, m4
+ punpcklbw m5, m7
+ pmullw m6, COEFF14
+ paddw m0, m5
+ pmullw m0, COEFF05
+ paddw m6, m0
+ mova m0, m1
+ paddw m6, [pw_32]
+ mova m1, m2
+ pmullw m2, COEFF2
+ paddw m6, m2
+ mova m2, m3
+ pmullw m3, COEFF3
+ paddw m6, m3
+
+ ; round/clip/store
+ mova m3, m4
+ psraw m6, 6
+ mova m4, m5
+ STORE m6, m5, %1
+
+ ; go to next line
+ add dstq, dststrideq
+ add srcq, srcstrideq
+ dec heightd ; next row
+ jg .nextrow
+ REP_RET
+%endmacro
+
+%macro FILTER_H 1
+cglobal %1_rv40_qpel_h, 6, 6+npicregs, 12, dst, dststride, src, srcstride, height, mx, picreg
+%ifdef PIC
+ lea picregq, [sixtap_filter_v_m]
+%endif
+ pxor m7, m7
+ LOAD mx, sixtap_filter_v
+ mova m6, [pw_32]
+%ifdef m8
+ mova m8, [mxq+ 0]
+ mova m9, [mxq+16]
+ mova m10, [mxq+32]
+ mova m11, [mxq+48]
+%define COEFF05 m8
+%define COEFF14 m9
+%define COEFF2 m10
+%define COEFF3 m11
+%else
+%define COEFF05 [mxq+ 0]
+%define COEFF14 [mxq+16]
+%define COEFF2 [mxq+32]
+%define COEFF3 [mxq+48]
+%endif
+.nextrow:
+ movq m0, [srcq-2]
+ movq m5, [srcq+3]
+ movq m1, [srcq-1]
+ movq m4, [srcq+2]
+ punpcklbw m0, m7
+ punpcklbw m5, m7
+ punpcklbw m1, m7
+ punpcklbw m4, m7
+ movq m2, [srcq-0]
+ movq m3, [srcq+1]
+ paddw m0, m5
+ paddw m1, m4
+ punpcklbw m2, m7
+ punpcklbw m3, m7
+ pmullw m0, COEFF05
+ pmullw m1, COEFF14
+ pmullw m2, COEFF2
+ pmullw m3, COEFF3
+ paddw m0, m6
+ paddw m1, m2
+ paddw m0, m3
+ paddw m0, m1
+ psraw m0, 6
+ STORE m0, m1, %1
+
+ ; go to next line
+ add dstq, dststrideq
+ add srcq, srcstrideq
+ dec heightd ; next row
+ jg .nextrow
+ REP_RET
+%endmacro
+
+%if ARCH_X86_32
+INIT_MMX mmx
+FILTER_V put
+FILTER_H put
+
+INIT_MMX mmxext
+FILTER_V avg
+FILTER_H avg
+
+INIT_MMX 3dnow
+FILTER_V avg
+FILTER_H avg
+%endif
+
+INIT_XMM sse2
+FILTER_H put
+FILTER_H avg
+FILTER_V put
+FILTER_V avg
+
+%macro FILTER_SSSE3 1
+cglobal %1_rv40_qpel_v, 6,6+npicregs,8, dst, dststride, src, srcstride, height, my, picreg
+%ifdef PIC
+ lea picregq, [sixtap_filter_hb_m]
+%endif
+
+ ; read 5 lines
+ sub srcq, srcstrideq
+ LOAD my, sixtap_filter_hb
+ sub srcq, srcstrideq
+ movh m0, [srcq]
+ movh m1, [srcq+srcstrideq]
+ movh m2, [srcq+srcstrideq*2]
+ lea srcq, [srcq+srcstrideq*2]
+ add srcq, srcstrideq
+ mova m5, [myq]
+ movh m3, [srcq]
+ movh m4, [srcq+srcstrideq]
+ lea srcq, [srcq+2*srcstrideq]
+
+.nextrow:
+ mova m6, m2
+ punpcklbw m0, m1
+ punpcklbw m6, m3
+ pmaddubsw m0, m5
+ pmaddubsw m6, [myq+16]
+ movh m7, [srcq] ; read new row
+ paddw m6, m0
+ mova m0, m1
+ mova m1, m2
+ mova m2, m3
+ mova m3, m4
+ mova m4, m7
+ punpcklbw m7, m3
+ pmaddubsw m7, m5
+ paddw m6, m7
+ pmulhrsw m6, [pw_512]
+ STORE m6, m7, %1
+
+ ; go to next line
+ add dstq, dststrideq
+ add srcq, srcstrideq
+ dec heightd ; next row
+ jg .nextrow
+ REP_RET
+
+cglobal %1_rv40_qpel_h, 6,6+npicregs,8, dst, dststride, src, srcstride, height, mx, picreg
+%ifdef PIC
+ lea picregq, [sixtap_filter_hb_m]
+%endif
+ mova m3, [filter_h6_shuf2]
+ mova m4, [filter_h6_shuf3]
+ LOAD mx, sixtap_filter_hb
+ mova m5, [mxq] ; set up 6tap filter in bytes
+ mova m6, [mxq+16]
+ mova m7, [filter_h6_shuf1]
+
+.nextrow:
+ movu m0, [srcq-2]
+ mova m1, m0
+ mova m2, m0
+ pshufb m0, m7
+ pshufb m1, m3
+ pshufb m2, m4
+ pmaddubsw m0, m5
+ pmaddubsw m1, m6
+ pmaddubsw m2, m5
+ paddw m0, m1
+ paddw m0, m2
+ pmulhrsw m0, [pw_512]
+ STORE m0, m1, %1
+
+ ; go to next line
+ add dstq, dststrideq
+ add srcq, srcstrideq
+ dec heightd ; next row
+ jg .nextrow
+ REP_RET
+%endmacro
+
+INIT_XMM ssse3
+FILTER_SSSE3 put
+FILTER_SSSE3 avg
+
+; %1=5bits weights?, %2=dst %3=src1 %4=src3 %5=stride if sse2
+%macro RV40_WCORE 4-5
+ movh m4, [%3 + r6 + 0]
+ movh m5, [%4 + r6 + 0]
+%if %0 == 4
+%define OFFSET r6 + mmsize / 2
+%else
+ ; 8x8 block and sse2, stride was provided
+%define OFFSET r6
+ add r6, r5
+%endif
+ movh m6, [%3 + OFFSET]
+ movh m7, [%4 + OFFSET]
+
+%if %1 == 0
+ ; 14bits weights
+ punpcklbw m4, m0
+ punpcklbw m5, m0
+ punpcklbw m6, m0
+ punpcklbw m7, m0
+
+ psllw m4, 7
+ psllw m5, 7
+ psllw m6, 7
+ psllw m7, 7
+ pmulhw m4, m3
+ pmulhw m5, m2
+ pmulhw m6, m3
+ pmulhw m7, m2
+
+ paddw m4, m5
+ paddw m6, m7
+%else
+ ; 5bits weights
+%if cpuflag(ssse3)
+ punpcklbw m4, m5
+ punpcklbw m6, m7
+
+ pmaddubsw m4, m3
+ pmaddubsw m6, m3
+%else
+ punpcklbw m4, m0
+ punpcklbw m5, m0
+ punpcklbw m6, m0
+ punpcklbw m7, m0
+
+ pmullw m4, m3
+ pmullw m5, m2
+ pmullw m6, m3
+ pmullw m7, m2
+ paddw m4, m5
+ paddw m6, m7
+%endif
+
+%endif
+
+ ; bias and shift down
+%if cpuflag(ssse3)
+ pmulhrsw m4, m1
+ pmulhrsw m6, m1
+%else
+ paddw m4, m1
+ paddw m6, m1
+ psrlw m4, 5
+ psrlw m6, 5
+%endif
+
+ packuswb m4, m6
+%if %0 == 5
+ ; Only called for 8x8 blocks and sse2
+ sub r6, r5
+ movh [%2 + r6], m4
+ add r6, r5
+ movhps [%2 + r6], m4
+%else
+ mova [%2 + r6], m4
+%endif
+%endmacro
+
+
+%macro MAIN_LOOP 2
+%if mmsize == 8
+ RV40_WCORE %2, r0, r1, r2
+%if %1 == 16
+ RV40_WCORE %2, r0 + 8, r1 + 8, r2 + 8
+%endif
+
+ ; Prepare for next loop
+ add r6, r5
+%else
+%ifidn %1, 8
+ RV40_WCORE %2, r0, r1, r2, r5
+ ; Prepare 2 next lines
+ add r6, r5
+%else
+ RV40_WCORE %2, r0, r1, r2
+ ; Prepare single next line
+ add r6, r5
+%endif
+%endif
+
+%endmacro
+
+; rv40_weight_func_%1(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w1, int w2, int stride)
+; %1=size %2=num of xmm regs
+; The weights are FP0.14 notation of fractions depending on pts.
+; For timebases without rounding error (i.e. PAL), the fractions
+; can be simplified, and several operations can be avoided.
+; Therefore, we check here whether they are multiples of 2^9 for
+; those simplifications to occur.
+%macro RV40_WEIGHT 3
+cglobal rv40_weight_func_%1_%2, 6, 7, 8
+%if cpuflag(ssse3)
+ mova m1, [pw_1024]
+%else
+ mova m1, [pw_16]
+%endif
+ pxor m0, m0
+ ; Set loop counter and increments
+ mov r6, r5
+ shl r6, %3
+ add r0, r6
+ add r1, r6
+ add r2, r6
+ neg r6
+
+ movd m2, r3d
+ movd m3, r4d
+%ifidn %1,rnd
+%define RND 0
+ SPLATW m2, m2
+%else
+%define RND 1
+%if cpuflag(ssse3)
+ punpcklbw m3, m2
+%else
+ SPLATW m2, m2
+%endif
+%endif
+ SPLATW m3, m3
+
+.loop:
+ MAIN_LOOP %2, RND
+ jnz .loop
+ REP_RET
+%endmacro
+
+INIT_MMX mmxext
+RV40_WEIGHT rnd, 8, 3
+RV40_WEIGHT rnd, 16, 4
+RV40_WEIGHT nornd, 8, 3
+RV40_WEIGHT nornd, 16, 4
+
+INIT_XMM sse2
+RV40_WEIGHT rnd, 8, 3
+RV40_WEIGHT rnd, 16, 4
+RV40_WEIGHT nornd, 8, 3
+RV40_WEIGHT nornd, 16, 4
+
+INIT_XMM ssse3
+RV40_WEIGHT rnd, 8, 3
+RV40_WEIGHT rnd, 16, 4
+RV40_WEIGHT nornd, 8, 3
+RV40_WEIGHT nornd, 16, 4
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