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/*
* 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
* 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"
static void idct_xvid_put(uint8_t *dest, int line_size, int16_t *block)
{
ff_idct_xvid(block);
ff_put_pixels_clamped(block, dest, line_size);
}
static void idct_xvid_add(uint8_t *dest, int line_size, int16_t *block)
{
ff_idct_xvid(block);
ff_add_pixels_clamped(block, dest, line_size);
}
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->lowres ||
!(avctx->idct_algo == FF_IDCT_AUTO ||
avctx->idct_algo == FF_IDCT_XVID))
return;
if (avctx->idct_algo == FF_IDCT_XVID) {
c->idct_put = idct_xvid_put;
c->idct_add = idct_xvid_add;
c->idct = ff_idct_xvid;
c->perm_type = FF_IDCT_PERM_NONE;
}
if (ARCH_X86)
ff_xvididct_init_x86(c);
ff_init_scantable_permutation(c->idct_permutation, c->perm_type);
}
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