mirror of
https://github.com/FFmpeg/FFmpeg.git
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119 lines
4.6 KiB
C
119 lines
4.6 KiB
C
/*
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* VP9 compatible video decoder
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*
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* Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com>
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* Copyright (C) 2013 Clément Bœsch <u pkh me>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_VP9DSP_H
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#define AVCODEC_VP9DSP_H
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#include <stddef.h>
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#include <stdint.h>
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#include "vp9.h"
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typedef void (*vp9_mc_func)(uint8_t *dst, ptrdiff_t dst_stride,
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const uint8_t *ref, ptrdiff_t ref_stride,
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int h, int mx, int my);
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typedef struct VP9DSPContext {
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/*
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* dimension 1: 0=4x4, 1=8x8, 2=16x16, 3=32x32
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* dimension 2: intra prediction modes
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*
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* dst/left/top is aligned by transform-size (i.e. 4, 8, 16 or 32 pixels)
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* stride is aligned by 16 pixels
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* top[-1] is top/left; top[4,7] is top-right for 4x4
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*/
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// FIXME(rbultje) maybe replace left/top pointers with HAVE_TOP/
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// HAVE_LEFT/HAVE_TOPRIGHT flags instead, and then handle it in-place?
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// also needs to fit in with what h264/vp8/etc do
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void (*intra_pred[N_TXFM_SIZES][N_INTRA_PRED_MODES])(uint8_t *dst,
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ptrdiff_t stride,
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const uint8_t *left,
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const uint8_t *top);
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/*
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* dimension 1: 0=4x4, 1=8x8, 2=16x16, 3=32x32, 4=lossless (3-4=dct only)
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* dimension 2: 0=dct/dct, 1=dct/adst, 2=adst/dct, 3=adst/adst
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*
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* dst is aligned by transform-size (i.e. 4, 8, 16 or 32 pixels)
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* stride is aligned by 16 pixels
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* block is 16-byte aligned
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* eob indicates the position (+1) of the last non-zero coefficient,
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* in scan-order. This can be used to write faster versions, e.g. a
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* dc-only 4x4/8x8/16x16/32x32, or a 4x4-only (eob<10) 8x8/16x16/32x32,
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* etc.
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*/
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// FIXME also write idct_add_block() versions for whole (inter) pred
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// blocks, so we can do 2 4x4s at once
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void (*itxfm_add[N_TXFM_SIZES + 1][N_TXFM_TYPES])(uint8_t *dst,
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ptrdiff_t stride,
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int16_t *block, int eob);
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/*
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* dimension 1: width of filter (0=4, 1=8, 2=16)
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* dimension 2: 0=col-edge filter (h), 1=row-edge filter (v)
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*
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* dst/stride are aligned by 8
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*/
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void (*loop_filter_8[3][2])(uint8_t *dst, ptrdiff_t stride,
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int mb_lim, int lim, int hev_thr);
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/*
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* dimension 1: 0=col-edge filter (h), 1=row-edge filter (v)
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*
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* The width of filter is assumed to be 16; dst/stride are aligned by 16
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*/
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void (*loop_filter_16[2])(uint8_t *dst, ptrdiff_t stride,
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int mb_lim, int lim, int hev_thr);
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/*
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* dimension 1/2: width of filter (0=4, 1=8) for each filter half
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* dimension 3: 0=col-edge filter (h), 1=row-edge filter (v)
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*
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* dst/stride are aligned by operation size
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* this basically calls loop_filter[d1][d3][0](), followed by
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* loop_filter[d2][d3][0]() on the next 8 pixels
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* mb_lim/lim/hev_thr contain two values in the lowest two bytes of the
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* integer.
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*/
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// FIXME perhaps a mix4 that operates on 32px (for AVX2)
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void (*loop_filter_mix2[2][2][2])(uint8_t *dst, ptrdiff_t stride,
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int mb_lim, int lim, int hev_thr);
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/*
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* dimension 1: hsize (0: 64, 1: 32, 2: 16, 3: 8, 4: 4)
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* dimension 2: filter type (0: smooth, 1: regular, 2: sharp, 3: bilin)
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* dimension 3: averaging type (0: put, 1: avg)
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* dimension 4: x subpel interpolation (0: none, 1: 8tap/bilin)
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* dimension 5: y subpel interpolation (1: none, 1: 8tap/bilin)
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*
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* dst/stride are aligned by hsize
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*/
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vp9_mc_func mc[5][4][2][2][2];
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} VP9DSPContext;
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void ff_vp9dsp_init(VP9DSPContext *dsp);
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void ff_vp9dsp_init_x86(VP9DSPContext *dsp);
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#endif /* AVCODEC_VP9DSP_H */
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