X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libswscale%2Fx86%2Frgb_2_rgb.asm;h=29b856e281424076bc1d4442712f6e3ae4dc7c93;hb=a5e24be52ab0ebea908a566a1b0dbf2584f5631a;hp=156b4d2c746579fbbdaf9a55ef66fad17a9c39b2;hpb=9a88a47be4da9cd25a582feec7cc36790500b481;p=ffmpeg

diff --git a/libswscale/x86/rgb_2_rgb.asm b/libswscale/x86/rgb_2_rgb.asm
index 156b4d2c746..29b856e2814 100644
--- a/libswscale/x86/rgb_2_rgb.asm
+++ b/libswscale/x86/rgb_2_rgb.asm
@@ -2,6 +2,7 @@
 ;* Copyright Nick Kurshev
 ;* Copyright Michael (michaelni@gmx.at)
 ;* Copyright 2018 Jokyo Images
+;* Copyright Ivo van Poorten
 ;*
 ;* This file is part of FFmpeg.
 ;*
@@ -24,6 +25,7 @@
 
 SECTION_RODATA
 
+pb_mask_shuffle2103_mmx times 8 dw 255
 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
@@ -42,6 +44,68 @@ SECTION .text
 %endif
 %endmacro
 
+;------------------------------------------------------------------------------
+; shuffle_bytes_2103_mmext (const uint8_t *src, uint8_t *dst, int src_size)
+;------------------------------------------------------------------------------
+INIT_MMX mmxext
+cglobal shuffle_bytes_2103, 3, 5, 8, src, dst, w, tmp, x
+    mova   m6, [pb_mask_shuffle2103_mmx]
+    mova   m7, m6
+    psllq  m7, 8
+
+    movsxdifnidn wq, wd
+    mov xq, wq
+
+    add        srcq, wq
+    add        dstq, wq
+    neg          wq
+
+;calc scalar loop
+    and xq, mmsize*2 -4
+    je .loop_simd
+
+.loop_scalar:
+   mov          tmpb, [srcq + wq + 2]
+   mov [dstq+wq + 0], tmpb
+   mov          tmpb, [srcq + wq + 1]
+   mov [dstq+wq + 1], tmpb
+   mov          tmpb, [srcq + wq + 0]
+   mov [dstq+wq + 2], tmpb
+   mov          tmpb, [srcq + wq + 3]
+   mov [dstq+wq + 3], tmpb
+   add            wq, 4
+   sub            xq, 4
+   jg .loop_scalar
+
+;check if src_size < mmsize * 2
+cmp wq, 0
+jge .end
+
+.loop_simd:
+    movu     m0, [srcq+wq]
+    movu     m1, [srcq+wq+8]
+
+    pshufw   m3, m0, 177
+    pshufw   m5, m1, 177
+
+    pand     m0, m7
+    pand     m3, m6
+
+    pand     m1, m7
+    pand     m5, m6
+
+    por      m0, m3
+    por      m1, m5
+
+    movu      [dstq+wq], m0
+    movu  [dstq+wq + 8], m1
+
+    add              wq, mmsize*2
+    jl .loop_simd
+
+.end:
+    RET
+
 ;------------------------------------------------------------------------------
 ; shuffle_bytes_## (const uint8_t *src, uint8_t *dst, int src_size)
 ;------------------------------------------------------------------------------