mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
119 lines
3.0 KiB
NASM
119 lines
3.0 KiB
NASM
;******************************************************************************
|
|
;* 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
|