FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
vp9dsp.h
Go to the documentation of this file.
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 "vp9.h"
31 
32 typedef void (*vp9_mc_func)(uint8_t *dst, ptrdiff_t dst_stride,
33  const uint8_t *ref, ptrdiff_t ref_stride,
34  int h, int mx, int my);
35 typedef void (*vp9_scaled_mc_func)(uint8_t *dst, ptrdiff_t dst_stride,
36  const uint8_t *ref, ptrdiff_t ref_stride,
37  int h, int mx, int my, int dx, int dy);
38 
39 typedef struct VP9DSPContext {
40  /*
41  * dimension 1: 0=4x4, 1=8x8, 2=16x16, 3=32x32
42  * dimension 2: intra prediction modes
43  *
44  * dst/left/top is aligned by transform-size (i.e. 4, 8, 16 or 32 pixels)
45  * stride is aligned by 16 pixels
46  * top[-1] is top/left; top[4,7] is top-right for 4x4
47  */
48  // FIXME(rbultje) maybe replace left/top pointers with HAVE_TOP/
49  // HAVE_LEFT/HAVE_TOPRIGHT flags instead, and then handle it in-place?
50  // also needs to fit in with what H.264/VP8/etc do
52  ptrdiff_t stride,
53  const uint8_t *left,
54  const uint8_t *top);
55 
56  /*
57  * dimension 1: 0=4x4, 1=8x8, 2=16x16, 3=32x32, 4=lossless (3-4=dct only)
58  * dimension 2: 0=dct/dct, 1=dct/adst, 2=adst/dct, 3=adst/adst
59  *
60  * dst is aligned by transform-size (i.e. 4, 8, 16 or 32 pixels)
61  * stride is aligned by 16 pixels
62  * block is 16-byte aligned
63  * eob indicates the position (+1) of the last non-zero coefficient,
64  * in scan-order. This can be used to write faster versions, e.g. a
65  * dc-only 4x4/8x8/16x16/32x32, or a 4x4-only (eob<10) 8x8/16x16/32x32,
66  * etc.
67  */
68  // FIXME also write idct_add_block() versions for whole (inter) pred
69  // blocks, so we can do 2 4x4s at once
71  ptrdiff_t stride,
72  int16_t *block, int eob);
73 
74  /*
75  * dimension 1: width of filter (0=4, 1=8, 2=16)
76  * dimension 2: 0=col-edge filter (h), 1=row-edge filter (v)
77  *
78  * dst/stride are aligned by 8
79  */
80  void (*loop_filter_8[3][2])(uint8_t *dst, ptrdiff_t stride,
81  int mb_lim, int lim, int hev_thr);
82 
83  /*
84  * dimension 1: 0=col-edge filter (h), 1=row-edge filter (v)
85  *
86  * The width of filter is assumed to be 16; dst/stride are aligned by 16
87  */
88  void (*loop_filter_16[2])(uint8_t *dst, ptrdiff_t stride,
89  int mb_lim, int lim, int hev_thr);
90 
91  /*
92  * dimension 1/2: width of filter (0=4, 1=8) for each filter half
93  * dimension 3: 0=col-edge filter (h), 1=row-edge filter (v)
94  *
95  * dst/stride are aligned by operation size
96  * this basically calls loop_filter[d1][d3][0](), followed by
97  * loop_filter[d2][d3][0]() on the next 8 pixels
98  * mb_lim/lim/hev_thr contain two values in the lowest two bytes of the
99  * integer.
100  */
101  // FIXME perhaps a mix4 that operates on 32px (for AVX2)
102  void (*loop_filter_mix2[2][2][2])(uint8_t *dst, ptrdiff_t stride,
103  int mb_lim, int lim, int hev_thr);
104 
105  /*
106  * dimension 1: hsize (0: 64, 1: 32, 2: 16, 3: 8, 4: 4)
107  * dimension 2: filter type (0: smooth, 1: regular, 2: sharp, 3: bilin)
108  * dimension 3: averaging type (0: put, 1: avg)
109  * dimension 4: x subpel interpolation (0: none, 1: 8tap/bilin)
110  * dimension 5: y subpel interpolation (0: none, 1: 8tap/bilin)
111  *
112  * dst/stride are aligned by hsize
113  */
114  vp9_mc_func mc[5][4][2][2][2];
115 
116  /*
117  * for scalable MC, first 3 dimensions identical to above, the other two
118  * don't exist since it changes per stepsize.
119  */
121 } VP9DSPContext;
122 
123 void ff_vp9dsp_init(VP9DSPContext *dsp, int bpp, int bitexact);
124 
128 
129 void ff_vp9dsp_init_x86(VP9DSPContext *dsp, int bpp, int bitexact);
130 void ff_vp9dsp_init_mips(VP9DSPContext *dsp, int bpp);
131 
132 #endif /* AVCODEC_VP9DSP_H */
void ff_vp9dsp_init(VP9DSPContext *dsp, int bpp, int bitexact)
Definition: vp9dsp.c:28
void ff_vp9dsp_init_12(VP9DSPContext *dsp)
void(* intra_pred[N_TXFM_SIZES][N_INTRA_PRED_MODES])(uint8_t *dst, ptrdiff_t stride, const uint8_t *left, const uint8_t *top)
Definition: vp9dsp.h:51
static int16_t block[64]
Definition: dct.c:113
vp9_mc_func mc[5][4][2][2][2]
Definition: vp9dsp.h:114
void ff_vp9dsp_init_10(VP9DSPContext *dsp)
uint8_t
void ff_vp9dsp_init_8(VP9DSPContext *dsp)
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
void(* loop_filter_16[2])(uint8_t *dst, ptrdiff_t stride, int mb_lim, int lim, int hev_thr)
Definition: vp9dsp.h:88
vp9_scaled_mc_func smc[5][4][2]
Definition: vp9dsp.h:120
void ff_vp9dsp_init_mips(VP9DSPContext *dsp, int bpp)
void(* loop_filter_mix2[2][2][2])(uint8_t *dst, ptrdiff_t stride, int mb_lim, int lim, int hev_thr)
Definition: vp9dsp.h:102
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)
Definition: vp9dsp.h:35
void(* loop_filter_8[3][2])(uint8_t *dst, ptrdiff_t stride, int mb_lim, int lim, int hev_thr)
Definition: vp9dsp.h:80
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)
Definition: vp9dsp.h:32
void ff_vp9dsp_init_x86(VP9DSPContext *dsp, int bpp, int bitexact)
Definition: vp9dsp_init.c:217
void(* itxfm_add[N_TXFM_SIZES+1][N_TXFM_TYPES])(uint8_t *dst, ptrdiff_t stride, int16_t *block, int eob)
Definition: vp9dsp.h:70
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
#define stride