media/ffvpx/libavcodec/vp9dsp.h

   1 /*
   2  * VP9 compatible video decoder
   3  *
   4  * Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com>
   5  * Copyright (C) 2013 Clément Bœsch <u pkh me>
   6  *
   7  * This file is part of FFmpeg.
   8  *
   9  * FFmpeg is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * FFmpeg is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with FFmpeg; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 #ifndef AVCODEC_VP9DSP_H
  25 #define AVCODEC_VP9DSP_H
  26
  27 #include <stddef.h>
  28 #include <stdint.h>
  29
  30 #include "libavcodec/vp9.h"
  31 #include "libavutil/attributes_internal.h"
  32
  33 typedef void (*vp9_mc_func)(uint8_t *dst, ptrdiff_t dst_stride,
  34                             const uint8_t *ref, ptrdiff_t ref_stride,
  35                             int h, int mx, int my);
  36 typedef void (*vp9_scaled_mc_func)(uint8_t *dst, ptrdiff_t dst_stride,
  37                                    const uint8_t *ref, ptrdiff_t ref_stride,
  38                                    int h, int mx, int my, int dx, int dy);
  39
  40 typedef struct VP9DSPContext {
  41     /*
  42      * dimension 1: 0=4x4, 1=8x8, 2=16x16, 3=32x32
  43      * dimension 2: intra prediction modes
  44      *
  45      * dst/left/top is aligned by transform-size (i.e. 4, 8, 16 or 32 pixels)
  46      * stride is aligned by 16 pixels
  47      * top[-1] is top/left; top[4,7] is top-right for 4x4
  48      */
  49     // FIXME(rbultje) maybe replace left/top pointers with HAVE_TOP/
  50     // HAVE_LEFT/HAVE_TOPRIGHT flags instead, and then handle it in-place?
  51     // also needs to fit in with what H.264/VP8/etc do
  52     void (*intra_pred[N_TXFM_SIZES][N_INTRA_PRED_MODES])(uint8_t *dst,
  53                                                          ptrdiff_t stride,
  54                                                          const uint8_t *left,
  55                                                          const uint8_t *top);
  56
  57     /*
  58      * dimension 1: 0=4x4, 1=8x8, 2=16x16, 3=32x32, 4=lossless (3-4=dct only)
  59      * dimension 2: 0=dct/dct, 1=dct/adst, 2=adst/dct, 3=adst/adst
  60      *
  61      * dst is aligned by transform-size (i.e. 4, 8, 16 or 32 pixels)
  62      * stride is aligned by 16 pixels
  63      * block is 16-byte aligned
  64      * eob indicates the position (+1) of the last non-zero coefficient,
  65      * in scan-order. This can be used to write faster versions, e.g. a
  66      * dc-only 4x4/8x8/16x16/32x32, or a 4x4-only (eob<10) 8x8/16x16/32x32,
  67      * etc.
  68      */
  69     // FIXME also write idct_add_block() versions for whole (inter) pred
  70     // blocks, so we can do 2 4x4s at once
  71     void (*itxfm_add[N_TXFM_SIZES + 1][N_TXFM_TYPES])(uint8_t *dst,
  72                                                       ptrdiff_t stride,
  73                                                       int16_t *block, int eob);
  74
  75     /*
  76      * dimension 1: width of filter (0=4, 1=8, 2=16)
  77      * dimension 2: 0=col-edge filter (h), 1=row-edge filter (v)
  78      *
  79      * dst/stride are aligned by 8
  80      */
  81     void (*loop_filter_8[3][2])(uint8_t *dst, ptrdiff_t stride,
  82                                 int mb_lim, int lim, int hev_thr);
  83
  84     /*
  85      * dimension 1: 0=col-edge filter (h), 1=row-edge filter (v)
  86      *
  87      * The width of filter is assumed to be 16; dst/stride are aligned by 16
  88      */
  89     void (*loop_filter_16[2])(uint8_t *dst, ptrdiff_t stride,
  90                               int mb_lim, int lim, int hev_thr);
  91
  92     /*
  93      * dimension 1/2: width of filter (0=4, 1=8) for each filter half
  94      * dimension 3: 0=col-edge filter (h), 1=row-edge filter (v)
  95      *
  96      * dst/stride are aligned by operation size
  97      * this basically calls loop_filter[d1][d3][0](), followed by
  98      * loop_filter[d2][d3][0]() on the next 8 pixels
  99      * mb_lim/lim/hev_thr contain two values in the lowest two bytes of the
 100      * integer.
 101      */
 102     // FIXME perhaps a mix4 that operates on 32px (for AVX2)
 103     void (*loop_filter_mix2[2][2][2])(uint8_t *dst, ptrdiff_t stride,
 104                                       int mb_lim, int lim, int hev_thr);
 105
 106     /*
 107      * dimension 1: hsize (0: 64, 1: 32, 2: 16, 3: 8, 4: 4)
 108      * dimension 2: filter type (0: smooth, 1: regular, 2: sharp, 3: bilin)
 109      * dimension 3: averaging type (0: put, 1: avg)
 110      * dimension 4: x subpel interpolation (0: none, 1: 8tap/bilin)
 111      * dimension 5: y subpel interpolation (0: none, 1: 8tap/bilin)
 112      *
 113      * dst/stride are aligned by hsize
 114      */
 115     vp9_mc_func mc[5][N_FILTERS][2][2][2];
 116
 117     /*
 118      * for scalable MC, first 3 dimensions identical to above, the other two
 119      * don't exist since it changes per stepsize.
 120      */
 121     vp9_scaled_mc_func smc[5][N_FILTERS][2];
 122 } VP9DSPContext;
 123
 124 extern const int16_t attribute_visibility_hidden ff_vp9_subpel_filters[3][16][8];
 125
 126 void ff_vp9dsp_init(VP9DSPContext *dsp, int bpp, int bitexact);
 127
 128 void ff_vp9dsp_init_8(VP9DSPContext *dsp);
 129 void ff_vp9dsp_init_10(VP9DSPContext *dsp);
 130 void ff_vp9dsp_init_12(VP9DSPContext *dsp);
 131
 132 void ff_vp9dsp_init_aarch64(VP9DSPContext *dsp, int bpp);
 133 void ff_vp9dsp_init_arm(VP9DSPContext *dsp, int bpp);
 134 void ff_vp9dsp_init_x86(VP9DSPContext *dsp, int bpp, int bitexact);
 135 void ff_vp9dsp_init_mips(VP9DSPContext *dsp, int bpp);
 136 void ff_vp9dsp_init_loongarch(VP9DSPContext *dsp, int bpp);
 137
 138 #endif /* AVCODEC_VP9DSP_H */