| ;****************************************************************************** |
| ;* 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 <rsbultje@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_RODATA |
| |
| SECTION .text |
| |
| ;----------------------------------------------------------------------------- |
| ; YUYV/UYVY/NV12/NV21 packed pixel shuffling. |
| ; |
| ; void <fmt>ToY_<opt>(uint8_t *dst, const uint8_t *src, int w); |
| ; and |
| ; void <fmt>toUV_<opt>(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, dword 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, dword 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 |
| |
| %ifdef HAVE_AVX |
| 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 |
| %endif |