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Diffstat (limited to 'libavcodec/x86/idctdsp.asm')
-rw-r--r-- | libavcodec/x86/idctdsp.asm | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/libavcodec/x86/idctdsp.asm b/libavcodec/x86/idctdsp.asm new file mode 100644 index 0000000..44a1a6e --- /dev/null +++ b/libavcodec/x86/idctdsp.asm @@ -0,0 +1,80 @@ +;****************************************************************************** +;* SIMD-optimized IDCT-related routines +;* Copyright (c) 2008 Loren Merritt +;* Copyright (c) 2003-2013 Michael Niedermayer +;* Copyright (c) 2013 Daniel Kang +;* +;* 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 + +cextern pb_80 + +SECTION_TEXT + +;-------------------------------------------------------------------------- +;void ff_put_signed_pixels_clamped(const int16_t *block, uint8_t *pixels, +; int line_size) +;-------------------------------------------------------------------------- + +%macro PUT_SIGNED_PIXELS_CLAMPED_HALF 1 + mova m1, [blockq+mmsize*0+%1] + mova m2, [blockq+mmsize*2+%1] +%if mmsize == 8 + mova m3, [blockq+mmsize*4+%1] + mova m4, [blockq+mmsize*6+%1] +%endif + packsswb m1, [blockq+mmsize*1+%1] + packsswb m2, [blockq+mmsize*3+%1] +%if mmsize == 8 + packsswb m3, [blockq+mmsize*5+%1] + packsswb m4, [blockq+mmsize*7+%1] +%endif + paddb m1, m0 + paddb m2, m0 +%if mmsize == 8 + paddb m3, m0 + paddb m4, m0 + movq [pixelsq+lsizeq*0], m1 + movq [pixelsq+lsizeq*1], m2 + movq [pixelsq+lsizeq*2], m3 + movq [pixelsq+lsize3q ], m4 +%else + movq [pixelsq+lsizeq*0], m1 + movhps [pixelsq+lsizeq*1], m1 + movq [pixelsq+lsizeq*2], m2 + movhps [pixelsq+lsize3q ], m2 +%endif +%endmacro + +%macro PUT_SIGNED_PIXELS_CLAMPED 1 +cglobal put_signed_pixels_clamped, 3, 4, %1, block, pixels, lsize, lsize3 + mova m0, [pb_80] + lea lsize3q, [lsizeq*3] + PUT_SIGNED_PIXELS_CLAMPED_HALF 0 + lea pixelsq, [pixelsq+lsizeq*4] + PUT_SIGNED_PIXELS_CLAMPED_HALF 64 + RET +%endmacro + +INIT_MMX mmx +PUT_SIGNED_PIXELS_CLAMPED 0 +INIT_XMM sse2 +PUT_SIGNED_PIXELS_CLAMPED 3 |