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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
*/
#ifndef AVCODEC_VP9DSP_H
#define AVCODEC_VP9DSP_H
#include <stddef.h>
#include <stdint.h>
#include "vp9.h"
typedef void (*vp9_mc_func)(uint8_t *dst, ptrdiff_t dst_stride,
const uint8_t *ref, ptrdiff_t ref_stride,
int h, int mx, int my);
typedef void (*vp9_scaled_mc_func)(uint8_t *dst, ptrdiff_t dst_stride,
const uint8_t *ref, ptrdiff_t ref_stride,
int h, int mx, int my, int dx, int dy);
typedef struct VP9DSPContext {
/*
* dimension 1: 0=4x4, 1=8x8, 2=16x16, 3=32x32
* dimension 2: intra prediction modes
*
* dst/left/top is aligned by transform-size (i.e. 4, 8, 16 or 32 pixels)
* stride is aligned by 16 pixels
* top[-1] is top/left; top[4,7] is top-right for 4x4
*/
// FIXME(rbultje) maybe replace left/top pointers with HAVE_TOP/
// HAVE_LEFT/HAVE_TOPRIGHT flags instead, and then handle it in-place?
// also needs to fit in with what h264/vp8/etc do
void (*intra_pred[N_TXFM_SIZES][N_INTRA_PRED_MODES])(uint8_t *dst,
ptrdiff_t stride,
const uint8_t *left,
const uint8_t *top);
/*
* dimension 1: 0=4x4, 1=8x8, 2=16x16, 3=32x32, 4=lossless (3-4=dct only)
* dimension 2: 0=dct/dct, 1=dct/adst, 2=adst/dct, 3=adst/adst
*
* dst is aligned by transform-size (i.e. 4, 8, 16 or 32 pixels)
* stride is aligned by 16 pixels
* block is 16-byte aligned
* eob indicates the position (+1) of the last non-zero coefficient,
* in scan-order. This can be used to write faster versions, e.g. a
* dc-only 4x4/8x8/16x16/32x32, or a 4x4-only (eob<10) 8x8/16x16/32x32,
* etc.
*/
// FIXME also write idct_add_block() versions for whole (inter) pred
// blocks, so we can do 2 4x4s at once
void (*itxfm_add[N_TXFM_SIZES + 1][N_TXFM_TYPES])(uint8_t *dst,
ptrdiff_t stride,
int16_t *block, int eob);
/*
* dimension 1: width of filter (0=4, 1=8, 2=16)
* dimension 2: 0=col-edge filter (h), 1=row-edge filter (v)
*
* dst/stride are aligned by 8
*/
void (*loop_filter_8[3][2])(uint8_t *dst, ptrdiff_t stride,
int mb_lim, int lim, int hev_thr);
/*
* dimension 1: 0=col-edge filter (h), 1=row-edge filter (v)
*
* The width of filter is assumed to be 16; dst/stride are aligned by 16
*/
void (*loop_filter_16[2])(uint8_t *dst, ptrdiff_t stride,
int mb_lim, int lim, int hev_thr);
/*
* dimension 1/2: width of filter (0=4, 1=8) for each filter half
* dimension 3: 0=col-edge filter (h), 1=row-edge filter (v)
*
* dst/stride are aligned by operation size
* this basically calls loop_filter[d1][d3][0](), followed by
* loop_filter[d2][d3][0]() on the next 8 pixels
* mb_lim/lim/hev_thr contain two values in the lowest two bytes of the
* integer.
*/
// FIXME perhaps a mix4 that operates on 32px (for AVX2)
void (*loop_filter_mix2[2][2][2])(uint8_t *dst, ptrdiff_t stride,
int mb_lim, int lim, int hev_thr);
/*
* dimension 1: hsize (0: 64, 1: 32, 2: 16, 3: 8, 4: 4)
* dimension 2: filter type (0: smooth, 1: regular, 2: sharp, 3: bilin)
* dimension 3: averaging type (0: put, 1: avg)
* dimension 4: x subpel interpolation (0: none, 1: 8tap/bilin)
* dimension 5: y subpel interpolation (0: none, 1: 8tap/bilin)
*
* dst/stride are aligned by hsize
*/
vp9_mc_func mc[5][4][2][2][2];
/*
* for scalable MC, first 3 dimensions identical to above, the other two
* don't exist since it changes per stepsize.
*/
vp9_scaled_mc_func smc[5][4][2];
} VP9DSPContext;
void ff_vp9dsp_init(VP9DSPContext *dsp);
void ff_vp9dsp_init_x86(VP9DSPContext *dsp);
#endif /* AVCODEC_VP9DSP_H */
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