;****************************************************************************** ;* x86-optimized input routines; does shuffling of packed ;* YUV formats into individual planes, and converts RGB ;* into YUV planes also. ;* Copyright (c) 2012 Ronald S. Bultje ;* ;* 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_RODATA SECTION .text ;----------------------------------------------------------------------------- ; YUYV/UYVY/NV12/NV21 packed pixel shuffling. ; ; void ToY_(uint8_t *dst, const uint8_t *src, int w); ; and ; void toUV_(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, ; const uint8_t *unused, int w); ;----------------------------------------------------------------------------- ; %1 = a (aligned) or u (unaligned) ; %2 = yuyv or uyvy %macro LOOP_YUYV_TO_Y 2 .loop_%1: mov%1 m0, [srcq+wq*2] ; (byte) { Y0, U0, Y1, V0, ... } mov%1 m1, [srcq+wq*2+mmsize] ; (byte) { Y8, U4, Y9, V4, ... } %ifidn %2, yuyv pand m0, m2 ; (word) { Y0, Y1, ..., Y7 } pand m1, m2 ; (word) { Y8, Y9, ..., Y15 } %else ; uyvy psrlw m0, 8 ; (word) { Y0, Y1, ..., Y7 } psrlw m1, 8 ; (word) { Y8, Y9, ..., Y15 } %endif ; yuyv/uyvy packuswb m0, m1 ; (byte) { Y0, ..., Y15 } mova [dstq+wq], m0 add wq, mmsize jl .loop_%1 REP_RET %endmacro ; %1 = nr. of XMM registers ; %2 = yuyv or uyvy ; %3 = if specified, it means that unaligned and aligned code in loop ; will be the same (i.e. YUYV+AVX), and thus we don't need to ; split the loop in an aligned and unaligned case %macro YUYV_TO_Y_FN 2-3 cglobal %2ToY, 5, 5, %1, dst, unused0, unused1, src, w %ifdef ARCH_X86_64 movsxd wq, wd %endif add dstq, wq %if mmsize == 16 test srcq, 15 %endif lea srcq, [srcq+wq*2] %ifidn %2, yuyv pcmpeqb m2, m2 ; (byte) { 0xff } x 16 psrlw m2, 8 ; (word) { 0x00ff } x 8 %endif ; yuyv %if mmsize == 16 jnz .loop_u_start neg wq LOOP_YUYV_TO_Y a, %2 .loop_u_start: neg wq LOOP_YUYV_TO_Y u, %2 %else ; mmsize == 8 neg wq LOOP_YUYV_TO_Y a, %2 %endif ; mmsize == 8/16 %endmacro ; %1 = a (aligned) or u (unaligned) ; %2 = yuyv or uyvy %macro LOOP_YUYV_TO_UV 2 .loop_%1: %ifidn %2, yuyv mov%1 m0, [srcq+wq*4] ; (byte) { Y0, U0, Y1, V0, ... } mov%1 m1, [srcq+wq*4+mmsize] ; (byte) { Y8, U4, Y9, V4, ... } psrlw m0, 8 ; (word) { U0, V0, ..., U3, V3 } psrlw m1, 8 ; (word) { U4, V4, ..., U7, V7 } %else ; uyvy %if cpuflag(avx) vpand m0, m2, [srcq+wq*4] ; (word) { U0, V0, ..., U3, V3 } vpand m1, m2, [srcq+wq*4+mmsize] ; (word) { U4, V4, ..., U7, V7 } %else mov%1 m0, [srcq+wq*4] ; (byte) { Y0, U0, Y1, V0, ... } mov%1 m1, [srcq+wq*4+mmsize] ; (byte) { Y8, U4, Y9, V4, ... } pand m0, m2 ; (word) { U0, V0, ..., U3, V3 } pand m1, m2 ; (word) { U4, V4, ..., U7, V7 } %endif %endif ; yuyv/uyvy packuswb m0, m1 ; (byte) { U0, V0, ..., U7, V7 } pand m1, m0, m2 ; (word) { U0, U1, ..., U7 } psrlw m0, 8 ; (word) { V0, V1, ..., V7 } %if mmsize == 16 packuswb m1, m0 ; (byte) { U0, ... U7, V1, ... V7 } movh [dstUq+wq], m1 movhps [dstVq+wq], m1 %else ; mmsize == 8 packuswb m1, m1 ; (byte) { U0, ... U3 } packuswb m0, m0 ; (byte) { V0, ... V3 } movh [dstUq+wq], m1 movh [dstVq+wq], m0 %endif ; mmsize == 8/16 add wq, mmsize / 2 jl .loop_%1 REP_RET %endmacro ; %1 = nr. of XMM registers ; %2 = yuyv or uyvy ; %3 = if specified, it means that unaligned and aligned code in loop ; will be the same (i.e. UYVY+AVX), and thus we don't need to ; split the loop in an aligned and unaligned case %macro YUYV_TO_UV_FN 2-3 cglobal %2ToUV, 4, 5, %1, dstU, dstV, unused, src, w %ifdef ARCH_X86_64 movsxd wq, r5m %else ; x86-32 mov wq, r5m %endif add dstUq, wq add dstVq, wq %if mmsize == 16 && %0 == 2 test srcq, 15 %endif lea srcq, [srcq+wq*4] pcmpeqb m2, m2 ; (byte) { 0xff } x 16 psrlw m2, 8 ; (word) { 0x00ff } x 8 ; NOTE: if uyvy+avx, u/a are identical %if mmsize == 16 && %0 == 2 jnz .loop_u_start neg wq LOOP_YUYV_TO_UV a, %2 .loop_u_start: neg wq LOOP_YUYV_TO_UV u, %2 %else ; mmsize == 8 neg wq LOOP_YUYV_TO_UV a, %2 %endif ; mmsize == 8/16 %endmacro ; %1 = a (aligned) or u (unaligned) ; %2 = nv12 or nv21 %macro LOOP_NVXX_TO_UV 2 .loop_%1: mov%1 m0, [srcq+wq*2] ; (byte) { U0, V0, U1, V1, ... } mov%1 m1, [srcq+wq*2+mmsize] ; (byte) { U8, V8, U9, V9, ... } pand m2, m0, m5 ; (word) { U0, U1, ..., U7 } pand m3, m1, m5 ; (word) { U8, U9, ..., U15 } psrlw m0, 8 ; (word) { V0, V1, ..., V7 } psrlw m1, 8 ; (word) { V8, V9, ..., V15 } packuswb m2, m3 ; (byte) { U0, ..., U15 } packuswb m0, m1 ; (byte) { V0, ..., V15 } %ifidn %2, nv12 mova [dstUq+wq], m2 mova [dstVq+wq], m0 %else ; nv21 mova [dstVq+wq], m2 mova [dstUq+wq], m0 %endif ; nv12/21 add wq, mmsize jl .loop_%1 REP_RET %endmacro ; %1 = nr. of XMM registers ; %2 = nv12 or nv21 %macro NVXX_TO_UV_FN 2 cglobal %2ToUV, 4, 5, %1, dstU, dstV, unused, src, w %ifdef ARCH_X86_64 movsxd wq, r5m %else ; x86-32 mov wq, r5m %endif add dstUq, wq add dstVq, wq %if mmsize == 16 test srcq, 15 %endif lea srcq, [srcq+wq*2] pcmpeqb m5, m5 ; (byte) { 0xff } x 16 psrlw m5, 8 ; (word) { 0x00ff } x 8 %if mmsize == 16 jnz .loop_u_start neg wq LOOP_NVXX_TO_UV a, %2 .loop_u_start: neg wq LOOP_NVXX_TO_UV u, %2 %else ; mmsize == 8 neg wq LOOP_NVXX_TO_UV a, %2 %endif ; mmsize == 8/16 %endmacro %ifdef ARCH_X86_32 INIT_MMX mmx YUYV_TO_Y_FN 0, yuyv YUYV_TO_Y_FN 0, uyvy YUYV_TO_UV_FN 0, yuyv YUYV_TO_UV_FN 0, uyvy NVXX_TO_UV_FN 0, nv12 NVXX_TO_UV_FN 0, nv21 %endif INIT_XMM sse2 YUYV_TO_Y_FN 3, yuyv YUYV_TO_Y_FN 2, uyvy YUYV_TO_UV_FN 3, yuyv YUYV_TO_UV_FN 3, uyvy NVXX_TO_UV_FN 5, nv12 NVXX_TO_UV_FN 5, nv21 INIT_XMM avx ; in theory, we could write a yuy2-to-y using vpand (i.e. AVX), but ; that's not faster in practice YUYV_TO_UV_FN 3, yuyv YUYV_TO_UV_FN 3, uyvy, 1 NVXX_TO_UV_FN 5, nv12 NVXX_TO_UV_FN 5, nv21