1/*
2 * Copyright (C) 2010 David Conrad
3 * Copyright (C) 2010 Ronald S. Bultje
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22/**
23 * @file
24 * VP8 compatible video decoder
25 */
26
27#ifndef AVCODEC_VP8DSP_H
28#define AVCODEC_VP8DSP_H
29
30#include <stddef.h>
31#include <stdint.h>
32
33typedef void (*vp8_mc_func)(uint8_t *dst /* align 8 */, ptrdiff_t dstStride,
34                            uint8_t *src /* align 1 */, ptrdiff_t srcStride,
35                            int h, int x, int y);
36
37typedef struct VP8DSPContext {
38    void (*vp8_luma_dc_wht)(int16_t block[4][4][16], int16_t dc[16]);
39    void (*vp8_luma_dc_wht_dc)(int16_t block[4][4][16], int16_t dc[16]);
40    void (*vp8_idct_add)(uint8_t *dst, int16_t block[16], ptrdiff_t stride);
41    void (*vp8_idct_dc_add)(uint8_t *dst, int16_t block[16], ptrdiff_t stride);
42    void (*vp8_idct_dc_add4y)(uint8_t *dst, int16_t block[4][16],
43                              ptrdiff_t stride);
44    void (*vp8_idct_dc_add4uv)(uint8_t *dst, int16_t block[4][16],
45                               ptrdiff_t stride);
46
47    // loop filter applied to edges between macroblocks
48    void (*vp8_v_loop_filter16y)(uint8_t *dst, ptrdiff_t stride,
49                                 int flim_E, int flim_I, int hev_thresh);
50    void (*vp8_h_loop_filter16y)(uint8_t *dst, ptrdiff_t stride,
51                                 int flim_E, int flim_I, int hev_thresh);
52    void (*vp8_v_loop_filter8uv)(uint8_t *dstU, uint8_t *dstV, ptrdiff_t stride,
53                                 int flim_E, int flim_I, int hev_thresh);
54    void (*vp8_h_loop_filter8uv)(uint8_t *dstU, uint8_t *dstV, ptrdiff_t stride,
55                                 int flim_E, int flim_I, int hev_thresh);
56
57    // loop filter applied to inner macroblock edges
58    void (*vp8_v_loop_filter16y_inner)(uint8_t *dst, ptrdiff_t stride,
59                                       int flim_E, int flim_I, int hev_thresh);
60    void (*vp8_h_loop_filter16y_inner)(uint8_t *dst, ptrdiff_t stride,
61                                       int flim_E, int flim_I, int hev_thresh);
62    void (*vp8_v_loop_filter8uv_inner)(uint8_t *dstU, uint8_t *dstV,
63                                       ptrdiff_t stride,
64                                       int flim_E, int flim_I, int hev_thresh);
65    void (*vp8_h_loop_filter8uv_inner)(uint8_t *dstU, uint8_t *dstV,
66                                       ptrdiff_t stride,
67                                       int flim_E, int flim_I, int hev_thresh);
68
69    void (*vp8_v_loop_filter_simple)(uint8_t *dst, ptrdiff_t stride, int flim);
70    void (*vp8_h_loop_filter_simple)(uint8_t *dst, ptrdiff_t stride, int flim);
71
72    /**
73     * first dimension: width>>3, height is assumed equal to width
74     * second dimension: 0 if no vertical interpolation is needed;
75     *                   1 4-tap vertical interpolation filter (my & 1)
76     *                   2 6-tap vertical interpolation filter (!(my & 1))
77     * third dimension: same as second dimension, for horizontal interpolation
78     * so something like put_vp8_epel_pixels_tab[width>>3][2*!!my-(my&1)][2*!!mx-(mx&1)](..., mx, my)
79     */
80    vp8_mc_func put_vp8_epel_pixels_tab[3][3][3];
81    vp8_mc_func put_vp8_bilinear_pixels_tab[3][3][3];
82} VP8DSPContext;
83
84void ff_put_vp8_pixels16_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
85                           int h, int x, int y);
86void ff_put_vp8_pixels8_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
87                          int h, int x, int y);
88void ff_put_vp8_pixels4_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
89                          int h, int x, int y);
90
91void ff_vp7dsp_init(VP8DSPContext *c);
92
93void ff_vp78dsp_init(VP8DSPContext *c);
94void ff_vp78dsp_init_arm(VP8DSPContext *c);
95void ff_vp78dsp_init_ppc(VP8DSPContext *c);
96void ff_vp78dsp_init_x86(VP8DSPContext *c);
97
98void ff_vp8dsp_init(VP8DSPContext *c);
99void ff_vp8dsp_init_arm(VP8DSPContext *c);
100void ff_vp8dsp_init_x86(VP8DSPContext *c);
101
102#define IS_VP7 1
103#define IS_VP8 0
104
105#endif /* AVCODEC_VP8DSP_H */
106