Imported Debian version 2.5.0~trusty1.1
[deb_ffmpeg.git] / ffmpeg / 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 "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
36 typedef struct VP9DSPContext {
37 /*
38 * dimension 1: 0=4x4, 1=8x8, 2=16x16, 3=32x32
39 * dimension 2: intra prediction modes
40 *
41 * dst/left/top is aligned by transform-size (i.e. 4, 8, 16 or 32 pixels)
42 * stride is aligned by 16 pixels
43 * top[-1] is top/left; top[4,7] is top-right for 4x4
44 */
45 // FIXME(rbultje) maybe replace left/top pointers with HAVE_TOP/
46 // HAVE_LEFT/HAVE_TOPRIGHT flags instead, and then handle it in-place?
47 // also needs to fit in with what h264/vp8/etc do
48 void (*intra_pred[N_TXFM_SIZES][N_INTRA_PRED_MODES])(uint8_t *dst,
49 ptrdiff_t stride,
50 const uint8_t *left,
51 const uint8_t *top);
52
53 /*
54 * dimension 1: 0=4x4, 1=8x8, 2=16x16, 3=32x32, 4=lossless (3-4=dct only)
55 * dimension 2: 0=dct/dct, 1=dct/adst, 2=adst/dct, 3=adst/adst
56 *
57 * dst is aligned by transform-size (i.e. 4, 8, 16 or 32 pixels)
58 * stride is aligned by 16 pixels
59 * block is 16-byte aligned
60 * eob indicates the position (+1) of the last non-zero coefficient,
61 * in scan-order. This can be used to write faster versions, e.g. a
62 * dc-only 4x4/8x8/16x16/32x32, or a 4x4-only (eob<10) 8x8/16x16/32x32,
63 * etc.
64 */
65 // FIXME also write idct_add_block() versions for whole (inter) pred
66 // blocks, so we can do 2 4x4s at once
67 void (*itxfm_add[N_TXFM_SIZES + 1][N_TXFM_TYPES])(uint8_t *dst,
68 ptrdiff_t stride,
69 int16_t *block, int eob);
70
71 /*
72 * dimension 1: width of filter (0=4, 1=8, 2=16)
73 * dimension 2: 0=col-edge filter (h), 1=row-edge filter (v)
74 *
75 * dst/stride are aligned by 8
76 */
77 void (*loop_filter_8[3][2])(uint8_t *dst, ptrdiff_t stride,
78 int mb_lim, int lim, int hev_thr);
79
80 /*
81 * dimension 1: 0=col-edge filter (h), 1=row-edge filter (v)
82 *
83 * The width of filter is assumed to be 16; dst/stride are aligned by 16
84 */
85 void (*loop_filter_16[2])(uint8_t *dst, ptrdiff_t stride,
86 int mb_lim, int lim, int hev_thr);
87
88 /*
89 * dimension 1/2: width of filter (0=4, 1=8) for each filter half
90 * dimension 3: 0=col-edge filter (h), 1=row-edge filter (v)
91 *
92 * dst/stride are aligned by operation size
93 * this basically calls loop_filter[d1][d3][0](), followed by
94 * loop_filter[d2][d3][0]() on the next 8 pixels
95 * mb_lim/lim/hev_thr contain two values in the lowest two bytes of the
96 * integer.
97 */
98 // FIXME perhaps a mix4 that operates on 32px (for AVX2)
99 void (*loop_filter_mix2[2][2][2])(uint8_t *dst, ptrdiff_t stride,
100 int mb_lim, int lim, int hev_thr);
101
102 /*
103 * dimension 1: hsize (0: 64, 1: 32, 2: 16, 3: 8, 4: 4)
104 * dimension 2: filter type (0: smooth, 1: regular, 2: sharp, 3: bilin)
105 * dimension 3: averaging type (0: put, 1: avg)
106 * dimension 4: x subpel interpolation (0: none, 1: 8tap/bilin)
107 * dimension 5: y subpel interpolation (0: none, 1: 8tap/bilin)
108 *
109 * dst/stride are aligned by hsize
110 */
111 vp9_mc_func mc[5][4][2][2][2];
112 } VP9DSPContext;
113
114 void ff_vp9dsp_init(VP9DSPContext *dsp);
115
116 void ff_vp9dsp_init_x86(VP9DSPContext *dsp);
117
118 #endif /* AVCODEC_VP9DSP_H */