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Diffstat (limited to 'libavresample/x86/dither_init.c')
-rw-r--r-- | libavresample/x86/dither_init.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/libavresample/x86/dither_init.c b/libavresample/x86/dither_init.c new file mode 100644 index 0000000000..1e20c1194a --- /dev/null +++ b/libavresample/x86/dither_init.c @@ -0,0 +1,39 @@ +/* + * Copyright (c) 2012 Justin Ruggles <justin.ruggles@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 "config.h" +#include "libavutil/cpu.h" +#include "libavutil/x86/cpu.h" +#include "libavresample/dither.h" + +extern void ff_quantize_sse2(int16_t *dst, const float *src, float *dither, + int len); + +av_cold void ff_dither_init_x86(DitherDSPContext *ddsp, + enum AVResampleDitherMethod method) +{ + int mm_flags = av_get_cpu_flags(); + + if (EXTERNAL_SSE2(mm_flags)) { + ddsp->quantize = ff_quantize_sse2; + ddsp->ptr_align = 16; + ddsp->samples_align = 8; + } +} |