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;******************************************************************************
;* MMX/SSE2-optimized functions for the RV30 and RV40 decoders
;* 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 "x86inc.asm"
%include "x86util.asm"
SECTION .text
%macro IDCT_DC_NOROUND 1
imul %1, 13*13*3
sar %1, 11
%endmacro
%macro IDCT_DC_ROUND 1
imul %1, 13*13
add %1, 0x200
sar %1, 10
%endmacro
%macro rv34_idct 1
cglobal rv34_idct_%1_mmx2, 1, 2, 0
movsx r1, word [r0]
IDCT_DC r1
movd m0, r1
pshufw m0, m0, 0
movq [r0+ 0], m0
movq [r0+ 8], m0
movq [r0+16], m0
movq [r0+24], m0
REP_RET
%endmacro
INIT_MMX
%define IDCT_DC IDCT_DC_ROUND
rv34_idct dc
%define IDCT_DC IDCT_DC_NOROUND
rv34_idct dc_noround
; ff_rv34_idct_dc_add_mmx(uint8_t *dst, int stride, int dc);
cglobal rv34_idct_dc_add_mmx, 3, 3
; calculate DC
IDCT_DC_ROUND r2
pxor m1, m1
movd m0, r2
psubw m1, m0
packuswb m0, m0
packuswb m1, m1
punpcklbw m0, m0
punpcklbw m1, m1
punpcklwd m0, m0
punpcklwd m1, m1
; add DC
lea r2, [r0+r1*2]
movh m2, [r0]
movh m3, [r0+r1]
movh m4, [r2]
movh m5, [r2+r1]
paddusb m2, m0
paddusb m3, m0
paddusb m4, m0
paddusb m5, m0
psubusb m2, m1
psubusb m3, m1
psubusb m4, m1
psubusb m5, m1
movh [r0], m2
movh [r0+r1], m3
movh [r2], m4
movh [r2+r1], m5
RET
; ff_rv34_idct_dc_add_sse4(uint8_t *dst, int stride, int dc);
INIT_XMM
cglobal rv34_idct_dc_add_sse4, 3, 3, 6
; load data
IDCT_DC_ROUND r2
pxor m1, m1
; calculate DC
movd m0, r2
lea r2, [r0+r1*2]
movd m2, [r0]
movd m3, [r0+r1]
pshuflw m0, m0, 0
movd m4, [r2]
movd m5, [r2+r1]
punpcklqdq m0, m0
punpckldq m2, m3
punpckldq m4, m5
punpcklbw m2, m1
punpcklbw m4, m1
paddw m2, m0
paddw m4, m0
packuswb m2, m4
movd [r0], m2
pextrd [r0+r1], m2, 1
pextrd [r2], m2, 2
pextrd [r2+r1], m2, 3
RET
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