From c67b449bebbe0b35c73b203683e77a0a649bc765 Mon Sep 17 00:00:00 2001 From: Diego Biurrun Date: Thu, 13 Feb 2014 17:57:05 +0100 Subject: dsputil: Split bswap*_buf() off into a separate context --- libavcodec/bswapdsp.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 libavcodec/bswapdsp.c (limited to 'libavcodec/bswapdsp.c') diff --git a/libavcodec/bswapdsp.c b/libavcodec/bswapdsp.c new file mode 100644 index 0000000000..6700cfd980 --- /dev/null +++ b/libavcodec/bswapdsp.c @@ -0,0 +1,56 @@ +/* + * 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 + +#include "libavutil/attributes.h" +#include "libavutil/bswap.h" +#include "bswapdsp.h" + +static void bswap_buf(uint32_t *dst, const uint32_t *src, int w) +{ + int i; + + for (i = 0; i + 8 <= w; i += 8) { + dst[i + 0] = av_bswap32(src[i + 0]); + dst[i + 1] = av_bswap32(src[i + 1]); + dst[i + 2] = av_bswap32(src[i + 2]); + dst[i + 3] = av_bswap32(src[i + 3]); + dst[i + 4] = av_bswap32(src[i + 4]); + dst[i + 5] = av_bswap32(src[i + 5]); + dst[i + 6] = av_bswap32(src[i + 6]); + dst[i + 7] = av_bswap32(src[i + 7]); + } + for (; i < w; i++) + dst[i + 0] = av_bswap32(src[i + 0]); +} + +static void bswap16_buf(uint16_t *dst, const uint16_t *src, int len) +{ + while (len--) + *dst++ = av_bswap16(*src++); +} + +av_cold void ff_bswapdsp_init(BswapDSPContext *c) +{ + c->bswap_buf = bswap_buf; + c->bswap16_buf = bswap16_buf; + + if (ARCH_X86) + ff_bswapdsp_init_x86(c); +} -- cgit v1.2.3