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/*
* VP9 compatible video decoder
*
* Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com>
* Copyright (C) 2013 Clément Bœsch <u pkh me>
*
* 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 "libavutil/avassert.h"
#include "libavutil/common.h"
#include "vp9dsp.h"
const DECLARE_ALIGNED(16, int16_t, ff_vp9_subpel_filters)[3][16][8] = {
[FILTER_8TAP_REGULAR] = {
{ 0, 0, 0, 128, 0, 0, 0, 0 },
{ 0, 1, -5, 126, 8, -3, 1, 0 },
{ -1, 3, -10, 122, 18, -6, 2, 0 },
{ -1, 4, -13, 118, 27, -9, 3, -1 },
{ -1, 4, -16, 112, 37, -11, 4, -1 },
{ -1, 5, -18, 105, 48, -14, 4, -1 },
{ -1, 5, -19, 97, 58, -16, 5, -1 },
{ -1, 6, -19, 88, 68, -18, 5, -1 },
{ -1, 6, -19, 78, 78, -19, 6, -1 },
{ -1, 5, -18, 68, 88, -19, 6, -1 },
{ -1, 5, -16, 58, 97, -19, 5, -1 },
{ -1, 4, -14, 48, 105, -18, 5, -1 },
{ -1, 4, -11, 37, 112, -16, 4, -1 },
{ -1, 3, -9, 27, 118, -13, 4, -1 },
{ 0, 2, -6, 18, 122, -10, 3, -1 },
{ 0, 1, -3, 8, 126, -5, 1, 0 },
}, [FILTER_8TAP_SHARP] = {
{ 0, 0, 0, 128, 0, 0, 0, 0 },
{ -1, 3, -7, 127, 8, -3, 1, 0 },
{ -2, 5, -13, 125, 17, -6, 3, -1 },
{ -3, 7, -17, 121, 27, -10, 5, -2 },
{ -4, 9, -20, 115, 37, -13, 6, -2 },
{ -4, 10, -23, 108, 48, -16, 8, -3 },
{ -4, 10, -24, 100, 59, -19, 9, -3 },
{ -4, 11, -24, 90, 70, -21, 10, -4 },
{ -4, 11, -23, 80, 80, -23, 11, -4 },
{ -4, 10, -21, 70, 90, -24, 11, -4 },
{ -3, 9, -19, 59, 100, -24, 10, -4 },
{ -3, 8, -16, 48, 108, -23, 10, -4 },
{ -2, 6, -13, 37, 115, -20, 9, -4 },
{ -2, 5, -10, 27, 121, -17, 7, -3 },
{ -1, 3, -6, 17, 125, -13, 5, -2 },
{ 0, 1, -3, 8, 127, -7, 3, -1 },
}, [FILTER_8TAP_SMOOTH] = {
{ 0, 0, 0, 128, 0, 0, 0, 0 },
{ -3, -1, 32, 64, 38, 1, -3, 0 },
{ -2, -2, 29, 63, 41, 2, -3, 0 },
{ -2, -2, 26, 63, 43, 4, -4, 0 },
{ -2, -3, 24, 62, 46, 5, -4, 0 },
{ -2, -3, 21, 60, 49, 7, -4, 0 },
{ -1, -4, 18, 59, 51, 9, -4, 0 },
{ -1, -4, 16, 57, 53, 12, -4, -1 },
{ -1, -4, 14, 55, 55, 14, -4, -1 },
{ -1, -4, 12, 53, 57, 16, -4, -1 },
{ 0, -4, 9, 51, 59, 18, -4, -1 },
{ 0, -4, 7, 49, 60, 21, -3, -2 },
{ 0, -4, 5, 46, 62, 24, -3, -2 },
{ 0, -4, 4, 43, 63, 26, -2, -2 },
{ 0, -3, 2, 41, 63, 29, -2, -2 },
{ 0, -3, 1, 38, 64, 32, -1, -3 },
}
};
av_cold void ff_vp9dsp_init(VP9DSPContext *dsp, int bpp, int bitexact)
{
if (bpp == 8) {
ff_vp9dsp_init_8(dsp);
} else if (bpp == 10) {
ff_vp9dsp_init_10(dsp);
} else {
av_assert0(bpp == 12);
ff_vp9dsp_init_12(dsp);
}
#if ARCH_AARCH64 == 1
ff_vp9dsp_init_aarch64(dsp, bpp);
#elif ARCH_ARM == 1
ff_vp9dsp_init_arm(dsp, bpp);
#elif ARCH_X86 == 1
ff_vp9dsp_init_x86(dsp, bpp, bitexact);
#elif ARCH_MIPS == 1
ff_vp9dsp_init_mips(dsp, bpp);
#endif
}
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