mirror of https://git.ffmpeg.org/ffmpeg.git
197 lines
5.8 KiB
NASM
197 lines
5.8 KiB
NASM
;******************************************************************************
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;* MMX/SSE2-optimized functions for the RV30 and RV40 decoders
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;* Copyright (C) 2012 Christophe Gisquet <christophe.gisquet@gmail.com>
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;*
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;* This file is part of Libav.
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;*
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;* Libav is free software; you can redistribute it and/or
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;* modify it under the terms of the GNU Lesser General Public
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;* License as published by the Free Software Foundation; either
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;* version 2.1 of the License, or (at your option) any later version.
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;*
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;* Libav is distributed in the hope that it will be useful,
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;* but WITHOUT ANY WARRANTY; without even the implied warranty of
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;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;* Lesser General Public License for more details.
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;*
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;* You should have received a copy of the GNU Lesser General Public
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;* License along with Libav; if not, write to the Free Software
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;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;******************************************************************************
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%include "x86inc.asm"
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%include "x86util.asm"
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SECTION_RODATA
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pw_row_coeffs: times 4 dw 13
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times 4 dw 17
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times 4 dw 7
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pd_512: times 2 dd 0x200
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pw_col_coeffs: dw 13, 13, 13, -13
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dw 17, 7, 7, -17
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dw 13, -13, 13, 13
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dw -7, 17, -17, -7
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SECTION .text
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%macro IDCT_DC_NOROUND 1
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imul %1, 13*13*3
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sar %1, 11
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%endmacro
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%macro IDCT_DC_ROUND 1
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imul %1, 13*13
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add %1, 0x200
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sar %1, 10
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%endmacro
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%macro rv34_idct 1
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cglobal rv34_idct_%1_mmx2, 1, 2, 0
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movsx r1, word [r0]
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IDCT_DC r1
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movd m0, r1d
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pshufw m0, m0, 0
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movq [r0+ 0], m0
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movq [r0+ 8], m0
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movq [r0+16], m0
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movq [r0+24], m0
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REP_RET
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%endmacro
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INIT_MMX
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%define IDCT_DC IDCT_DC_ROUND
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rv34_idct dc
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%define IDCT_DC IDCT_DC_NOROUND
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rv34_idct dc_noround
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; ff_rv34_idct_dc_add_mmx(uint8_t *dst, int stride, int dc);
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cglobal rv34_idct_dc_add_mmx, 3, 3
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; calculate DC
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IDCT_DC_ROUND r2
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pxor m1, m1
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movd m0, r2d
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psubw m1, m0
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packuswb m0, m0
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packuswb m1, m1
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punpcklbw m0, m0
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punpcklbw m1, m1
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punpcklwd m0, m0
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punpcklwd m1, m1
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; add DC
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lea r2, [r0+r1*2]
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movh m2, [r0]
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movh m3, [r0+r1]
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movh m4, [r2]
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movh m5, [r2+r1]
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paddusb m2, m0
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paddusb m3, m0
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paddusb m4, m0
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paddusb m5, m0
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psubusb m2, m1
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psubusb m3, m1
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psubusb m4, m1
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psubusb m5, m1
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movh [r0], m2
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movh [r0+r1], m3
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movh [r2], m4
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movh [r2+r1], m5
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RET
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; Load coeffs and perform row transform
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; Output: coeffs in mm[0467], rounder in mm5
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%macro ROW_TRANSFORM 1
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pxor mm7, mm7
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mova mm0, [%1+ 0*8]
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mova mm1, [%1+ 1*8]
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mova mm2, [%1+ 2*8]
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mova mm3, [%1+ 3*8]
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mova [%1+ 0*8], mm7
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mova [%1+ 1*8], mm7
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mova [%1+ 2*8], mm7
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mova [%1+ 3*8], mm7
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mova mm4, mm0
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mova mm6, [pw_row_coeffs+ 0]
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paddsw mm0, mm2 ; b0 + b2
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psubsw mm4, mm2 ; b0 - b2
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pmullw mm0, mm6 ; *13 = z0
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pmullw mm4, mm6 ; *13 = z1
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mova mm5, mm1
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pmullw mm1, [pw_row_coeffs+ 8] ; b1*17
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pmullw mm5, [pw_row_coeffs+16] ; b1* 7
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mova mm7, mm3
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pmullw mm3, [pw_row_coeffs+ 8] ; b3*17
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pmullw mm7, [pw_row_coeffs+16] ; b3* 7
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paddsw mm1, mm7 ; z3 = b1*17 + b3* 7
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psubsw mm5, mm3 ; z2 = b1* 7 - b3*17
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mova mm7, mm0
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mova mm6, mm4
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paddsw mm0, mm1 ; z0 + z3
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psubsw mm7, mm1 ; z0 - z3
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paddsw mm4, mm5 ; z1 + z2
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psubsw mm6, mm5 ; z1 - z2
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mova mm5, [pd_512] ; 0x200
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%endmacro
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; ff_rv34_idct_add_mmx2(uint8_t *dst, ptrdiff_t stride, DCTELEM *block);
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%macro COL_TRANSFORM 4
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pshufw mm3, %2, 0xDD ; col. 1,3,1,3
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pshufw %2, %2, 0x88 ; col. 0,2,0,2
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pmaddwd %2, %3 ; 13*c0+13*c2 | 13*c0-13*c2 = z0 | z1
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pmaddwd mm3, %4 ; 17*c1+ 7*c3 | 7*c1-17*c3 = z3 | z2
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paddd %2, mm5
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pshufw mm1, %2, 01001110b ; z1 | z0
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pshufw mm2, mm3, 01001110b ; z2 | z3
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paddd %2, mm3 ; z0+z3 | z1+z2
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psubd mm1, mm2 ; z1-z2 | z0-z3
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movd mm3, %1
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psrad %2, 10
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pxor mm2, mm2
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psrad mm1, 10
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punpcklbw mm3, mm2
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packssdw %2, mm1
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paddw %2, mm3
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packuswb %2, %2
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movd %1, %2
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%endmacro
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INIT_MMX mmx2
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cglobal rv34_idct_add, 3,3,0, d, s, b
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ROW_TRANSFORM bq
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COL_TRANSFORM [dq], mm0, [pw_col_coeffs+ 0], [pw_col_coeffs+ 8]
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mova mm0, [pw_col_coeffs+ 0]
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COL_TRANSFORM [dq+sq], mm4, mm0, [pw_col_coeffs+ 8]
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mova mm4, [pw_col_coeffs+ 8]
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lea dq, [dq + 2*sq]
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COL_TRANSFORM [dq], mm6, mm0, mm4
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COL_TRANSFORM [dq+sq], mm7, mm0, mm4
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ret
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; ff_rv34_idct_dc_add_sse4(uint8_t *dst, int stride, int dc);
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INIT_XMM
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cglobal rv34_idct_dc_add_sse4, 3, 3, 6
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; load data
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IDCT_DC_ROUND r2
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pxor m1, m1
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; calculate DC
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movd m0, r2d
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lea r2, [r0+r1*2]
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movd m2, [r0]
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movd m3, [r0+r1]
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pshuflw m0, m0, 0
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movd m4, [r2]
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movd m5, [r2+r1]
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punpcklqdq m0, m0
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punpckldq m2, m3
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punpckldq m4, m5
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punpcklbw m2, m1
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punpcklbw m4, m1
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paddw m2, m0
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paddw m4, m0
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packuswb m2, m4
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movd [r0], m2
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pextrd [r0+r1], m2, 1
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pextrd [r2], m2, 2
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pextrd [r2+r1], m2, 3
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RET
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