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55 lines
1.7 KiB
55 lines
1.7 KiB
;****************************************************************************** |
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;* MMX/SSE2-optimized functions for the RV30 and RV40 decoders |
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;* Copyright (C) 2012 Christophe Gisquet <christophe.gisquet@gmail.com> |
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;* |
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;* This file is part of Libav. |
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;* |
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;* Libav is free software; you can redistribute it and/or |
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;* modify it under the terms of the GNU Lesser General Public |
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;* License as published by the Free Software Foundation; either |
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;* version 2.1 of the License, or (at your option) any later version. |
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;* |
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;* Libav is distributed in the hope that it will be useful, |
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;* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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;* Lesser General Public License for more details. |
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;* |
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;* You should have received a copy of the GNU Lesser General Public |
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;* License along with Libav; if not, write to the Free Software |
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;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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;****************************************************************************** |
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%include "x86inc.asm" |
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%include "x86util.asm" |
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SECTION .text |
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%macro IDCT_DC_NOROUND 1 |
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imul %1, 13*13*3 |
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sar %1, 11 |
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%endmacro |
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%macro IDCT_DC_ROUND 1 |
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imul %1, 13*13 |
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add %1, 0x200 |
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sar %1, 10 |
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%endmacro |
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%macro rv34_idct_dequant4x4_dc 1 |
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cglobal rv34_idct_dequant4x4_%1_mmx2, 1, 2, 0 |
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movsx r1, word [r0] |
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IDCT_DC r1 |
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movd mm0, r1 |
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pshufw mm0, mm0, 0 |
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movq [r0+ 0], mm0 |
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movq [r0+16], mm0 |
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movq [r0+32], mm0 |
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movq [r0+48], mm0 |
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REP_RET |
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%endmacro |
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INIT_MMX |
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%define IDCT_DC IDCT_DC_ROUND |
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rv34_idct_dequant4x4_dc dc |
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%define IDCT_DC IDCT_DC_NOROUND |
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rv34_idct_dequant4x4_dc dc_noround
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