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- ;******************************************************************************
- ;* MMX/SSE2-optimized functions for the RV30 and RV40 decoders
- ;* Copyright (C) 2012 Christophe Gisquet <christophe.gisquet@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 .text
-
- %macro IDCT_DC_NOROUND 1
- imul %1, 13*13*3
- sar %1, 11
- %endmacro
-
- %macro IDCT_DC_ROUND 1
- imul %1, 13*13
- add %1, 0x200
- sar %1, 10
- %endmacro
-
- %macro rv34_idct_dequant4x4_dc 1
- cglobal rv34_idct_dequant4x4_%1_mmx2, 1, 2, 0
- movsx r1, word [r0]
- IDCT_DC r1
- movd mm0, r1
- pshufw mm0, mm0, 0
- movq [r0+ 0], mm0
- movq [r0+16], mm0
- movq [r0+32], mm0
- movq [r0+48], mm0
- REP_RET
- %endmacro
-
- INIT_MMX
- %define IDCT_DC IDCT_DC_ROUND
- rv34_idct_dequant4x4_dc dc
- %define IDCT_DC IDCT_DC_NOROUND
- rv34_idct_dequant4x4_dc dc_noround
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