RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
ffmpeg/libswscale/x86/rgb_2_rgb.asm

237 lines
6.5 KiB
NASM
Raw Blame History

;******************************************************************************
;* Copyright Nick Kurshev
;* Copyright Michael (michaelni@gmx.at)
;* Copyright 2018 Jokyo Images
;*
;* This file is part of FFmpeg.
;*
;* FFmpeg 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.
;*
;* FFmpeg 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 FFmpeg; 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
pb_shuffle2103: db 2, 1, 0, 3, 6, 5, 4, 7, 10, 9, 8, 11, 14, 13, 12, 15
pb_shuffle0321: db 0, 3, 2, 1, 4, 7, 6, 5, 8, 11, 10, 9, 12, 15, 14, 13
pb_shuffle1230: db 1, 2, 3, 0, 5, 6, 7, 4, 9, 10, 11, 8, 13, 14, 15, 12
pb_shuffle3012: db 3, 0, 1, 2, 7, 4, 5, 6, 11, 8, 9, 10, 15, 12, 13, 14
pb_shuffle3210: db 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12
SECTION .text
%macro RSHIFT_COPY 3
; %1 dst ; %2 src ; %3 shift
%if cpuflag(avx)
psrldq %1, %2, %3
%else
mova %1, %2
RSHIFT %1, %3
%endif
%endmacro
;------------------------------------------------------------------------------
; shuffle_bytes_## (const uint8_t *src, uint8_t *dst, int src_size)
;------------------------------------------------------------------------------
; %1-4 index shuffle
%macro SHUFFLE_BYTES 4
cglobal shuffle_bytes_%1%2%3%4, 3, 5, 2, src, dst, w, tmp, x
VBROADCASTI128 m0, [pb_shuffle%1%2%3%4]
movsxdifnidn wq, wd
mov xq, wq
add srcq, wq
add dstq, wq
neg wq
;calc scalar loop
and xq, mmsize-4
je .loop_simd
.loop_scalar:
mov tmpb, [srcq + wq + %1]
mov [dstq+wq + 0], tmpb
mov tmpb, [srcq + wq + %2]
mov [dstq+wq + 1], tmpb
mov tmpb, [srcq + wq + %3]
mov [dstq+wq + 2], tmpb
mov tmpb, [srcq + wq + %4]
mov [dstq+wq + 3], tmpb
add wq, 4
sub xq, 4
jg .loop_scalar
;check if src_size < mmsize
cmp wq, 0
jge .end
.loop_simd:
movu m1, [srcq+wq]
pshufb m1, m0
movu [dstq+wq], m1
add wq, mmsize
jl .loop_simd
.end:
RET
%endmacro
INIT_XMM ssse3
SHUFFLE_BYTES 2, 1, 0, 3
SHUFFLE_BYTES 0, 3, 2, 1
SHUFFLE_BYTES 1, 2, 3, 0
SHUFFLE_BYTES 3, 0, 1, 2
SHUFFLE_BYTES 3, 2, 1, 0
;-----------------------------------------------------------------------------------------------
; uyvytoyuv422(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
; const uint8_t *src, int width, int height,
; int lumStride, int chromStride, int srcStride)
;-----------------------------------------------------------------------------------------------
%macro UYVY_TO_YUV422 0
cglobal uyvytoyuv422, 9, 14, 8, ydst, udst, vdst, src, w, h, lum_stride, chrom_stride, src_stride, wtwo, whalf, tmp, x, back_w
pxor m0, m0
pcmpeqw m1, m1
psrlw m1, 8
movsxdifnidn wq, wd
movsxdifnidn lum_strideq, lum_strided
movsxdifnidn chrom_strideq, chrom_strided
movsxdifnidn src_strideq, src_strided
mov back_wq, wq
mov whalfq, wq
shr whalfq, 1 ; whalf = width / 2
lea srcq, [srcq + wq * 2]
add ydstq, wq
add udstq, whalfq
add vdstq, whalfq
.loop_line:
mov xq, wq
mov wtwoq, wq
add wtwoq, wtwoq ; wtwo = width * 2
neg wq
neg wtwoq
neg whalfq
;calc scalar loop count
and xq, mmsize * 2 - 1
je .loop_simd
.loop_scalar:
mov tmpb, [srcq + wtwoq + 0]
mov [udstq + whalfq], tmpb
mov tmpb, [srcq + wtwoq + 1]
mov [ydstq + wq], tmpb
mov tmpb, [srcq + wtwoq + 2]
mov [vdstq + whalfq], tmpb
mov tmpb, [srcq + wtwoq + 3]
mov [ydstq + wq + 1], tmpb
add wq, 2
add wtwoq, 4
add whalfq, 1
sub xq, 2
jg .loop_scalar
; check if simd loop is need
cmp wq, 0
jge .end_line
.loop_simd:
movu m2, [srcq + wtwoq ]
movu m3, [srcq + wtwoq + mmsize ]
movu m4, [srcq + wtwoq + mmsize * 2]
movu m5, [srcq + wtwoq + mmsize * 3]
; extract y part 1
RSHIFT_COPY m6, m2, 1 ; UYVY UYVY -> YVYU YVY...
pand m6, m1; YxYx YxYx...
RSHIFT_COPY m7, m3, 1 ; UYVY UYVY -> YVYU YVY...
pand m7, m1 ; YxYx YxYx...
packuswb m6, m7 ; YYYY YYYY...
movu [ydstq + wq], m6
; extract y part 2
RSHIFT_COPY m6, m4, 1 ; UYVY UYVY -> YVYU YVY...
pand m6, m1; YxYx YxYx...
RSHIFT_COPY m7, m5, 1 ; UYVY UYVY -> YVYU YVY...
pand m7, m1 ; YxYx YxYx...
packuswb m6, m7 ; YYYY YYYY...
movu [ydstq + wq + mmsize], m6
; extract uv
pand m2, m1 ; UxVx...
pand m3, m1 ; UxVx...
pand m4, m1 ; UxVx...
pand m5, m1 ; UxVx...
packuswb m2, m3 ; UVUV...
packuswb m4, m5 ; UVUV...
; U
pand m6, m2, m1 ; UxUx...
pand m7, m4, m1 ; UxUx...
packuswb m6, m7 ; UUUU
movu [udstq + whalfq], m6
; V
psrlw m2, 8 ; VxVx...
psrlw m4, 8 ; VxVx...
packuswb m2, m4 ; VVVV
movu [vdstq + whalfq], m2
add whalfq, mmsize
add wtwoq, mmsize * 4
add wq, mmsize * 2
jl .loop_simd
.end_line:
add srcq, src_strideq
add ydstq, lum_strideq
add udstq, chrom_strideq
add vdstq, chrom_strideq
;restore initial state of line variable
mov wq, back_wq
mov xq, wq
mov whalfq, wq
shr whalfq, 1 ; whalf = width / 2
sub hd, 1
jg .loop_line
RET
%endmacro
%if ARCH_X86_64
INIT_XMM sse2
UYVY_TO_YUV422
INIT_XMM avx
UYVY_TO_YUV422
%endif
Reference in New Issue View Git Blame Copy Permalink