From a786c8259dafeca9744252230b5d78f67810770c Mon Sep 17 00:00:00 2001 From: Diego Biurrun Date: Mon, 21 Jul 2014 13:13:21 -0700 Subject: idct: Split off Xvid IDCT The Xvid IDCT is only required to decode some Xvid-encoded MPEG-4 files, so there is no point in having it as an unconditional part of idctdsp. --- libavcodec/xvididct.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 libavcodec/xvididct.c (limited to 'libavcodec/xvididct.c') diff --git a/libavcodec/xvididct.c b/libavcodec/xvididct.c new file mode 100644 index 0000000000..1453e51700 --- /dev/null +++ b/libavcodec/xvididct.c @@ -0,0 +1,36 @@ +/* + * 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/attributes.h" +#include "avcodec.h" +#include "idctdsp.h" +#include "xvididct.h" + +av_cold void ff_xvididct_init(IDCTDSPContext *c, AVCodecContext *avctx) +{ + const unsigned high_bit_depth = avctx->bits_per_raw_sample > 8; + + if (high_bit_depth || + !(avctx->idct_algo == FF_IDCT_AUTO || + avctx->idct_algo == FF_IDCT_XVIDMMX)) + return; + + if (ARCH_X86) + ff_xvididct_init_x86(c); +} -- cgit v1.2.3