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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2011-02-10 12:20:36 -0500 |
|---|---|---|
| committer | Ronald S. Bultje <rsbultje@gmail.com> | 2011-02-10 15:32:47 -0500 |
| commit | dda3f0ef48aa5c3b03566b60b6bf63211e1fe579 (patch) | |
| tree | 0adb6558e2581beb7019d89998dd8d7ba210be65 /libavcodec/x86/ac3dsp.asm | |
| parent | b4668274b944abae61759e796c5cc36ade510f24 (diff) | |
| download | ffmpeg-dda3f0ef48aa5c3b03566b60b6bf63211e1fe579.tar.gz | |
Add x86-optimized versions of exponent_min().
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
Diffstat (limited to 'libavcodec/x86/ac3dsp.asm')
| -rw-r--r-- | libavcodec/x86/ac3dsp.asm | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/libavcodec/x86/ac3dsp.asm b/libavcodec/x86/ac3dsp.asm new file mode 100644 index 0000000000..e71c51cf33 --- /dev/null +++ b/libavcodec/x86/ac3dsp.asm @@ -0,0 +1,67 @@ +;***************************************************************************** +;* x86-optimized AC-3 DSP utils +;* Copyright (c) 2011 Justin Ruggles +;* +;* 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 +;* 51, Inc., Foundation Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +;****************************************************************************** + +%include "x86inc.asm" +%include "x86util.asm" + +SECTION .text + +;----------------------------------------------------------------------------- +; void ff_ac3_exponent_min(uint8_t *exp, int num_reuse_blocks, int nb_coefs) +;----------------------------------------------------------------------------- + +%macro AC3_EXPONENT_MIN 1 +cglobal ac3_exponent_min_%1, 3,4,2, exp, reuse_blks, expn, offset + shl reuse_blksq, 8 + jz .end + LOOP_ALIGN +.nextexp: + mov offsetq, reuse_blksq + mova m0, [expq+offsetq] + sub offsetq, 256 + LOOP_ALIGN +.nextblk: + PMINUB m0, [expq+offsetq], m1 + sub offsetq, 256 + jae .nextblk + mova [expq], m0 + add expq, mmsize + sub expnq, mmsize + jg .nextexp +.end: + REP_RET +%endmacro + +%define PMINUB PMINUB_MMX +%define LOOP_ALIGN +INIT_MMX +AC3_EXPONENT_MIN mmx +%ifdef HAVE_MMX2 +%define PMINUB PMINUB_MMXEXT +%define LOOP_ALIGN ALIGN 16 +AC3_EXPONENT_MIN mmxext +%endif +%ifdef HAVE_SSE +INIT_XMM +AC3_EXPONENT_MIN sse2 +%endif +%undef PMINUB +%undef LOOP_ALIGN |