1/*
2 * Copyright (C) 2010 David Conrad
3 * Copyright (C) 2010 Ronald S. Bultje
4 *
5 * This file is part of Libav.
6 *
7 * Libav 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 * Libav 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 Libav; 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 "dsputil.h"
31
32typedef void (*vp8_mc_func)(uint8_t *dst/*align 8*/, int dstStride, uint8_t *src/*align 1*/, int srcStride, int h, int x, int y);
33
34typedef struct VP8DSPContext {
35    void (*vp8_luma_dc_wht)(DCTELEM block[4][4][16], DCTELEM dc[16]);
36    void (*vp8_luma_dc_wht_dc)(DCTELEM block[4][4][16], DCTELEM dc[16]);
37    void (*vp8_idct_add)(uint8_t *dst, DCTELEM block[16], int stride);
38    void (*vp8_idct_dc_add)(uint8_t *dst, DCTELEM block[16], int stride);
39    void (*vp8_idct_dc_add4y)(uint8_t *dst, DCTELEM block[4][16], int stride);
40    void (*vp8_idct_dc_add4uv)(uint8_t *dst, DCTELEM block[4][16], int stride);
41
42    // loop filter applied to edges between macroblocks
43    void (*vp8_v_loop_filter16y)(uint8_t *dst, int stride,
44                                 int flim_E, int flim_I, int hev_thresh);
45    void (*vp8_h_loop_filter16y)(uint8_t *dst, int stride,
46                                 int flim_E, int flim_I, int hev_thresh);
47    void (*vp8_v_loop_filter8uv)(uint8_t *dstU, uint8_t *dstV, int stride,
48                                 int flim_E, int flim_I, int hev_thresh);
49    void (*vp8_h_loop_filter8uv)(uint8_t *dstU, uint8_t *dstV, int stride,
50                                 int flim_E, int flim_I, int hev_thresh);
51
52    // loop filter applied to inner macroblock edges
53    void (*vp8_v_loop_filter16y_inner)(uint8_t *dst, int stride,
54                                       int flim_E, int flim_I, int hev_thresh);
55    void (*vp8_h_loop_filter16y_inner)(uint8_t *dst, int stride,
56                                       int flim_E, int flim_I, int hev_thresh);
57    void (*vp8_v_loop_filter8uv_inner)(uint8_t *dstU, uint8_t *dstV, int stride,
58                                       int flim_E, int flim_I, int hev_thresh);
59    void (*vp8_h_loop_filter8uv_inner)(uint8_t *dstU, uint8_t *dstV, int stride,
60                                       int flim_E, int flim_I, int hev_thresh);
61
62    void (*vp8_v_loop_filter_simple)(uint8_t *dst, int stride, int flim);
63    void (*vp8_h_loop_filter_simple)(uint8_t *dst, int stride, int flim);
64
65    /**
66     * first dimension: width>>3, height is assumed equal to width
67     * second dimension: 0 if no vertical interpolation is needed;
68     *                   1 4-tap vertical interpolation filter (my & 1)
69     *                   2 6-tap vertical interpolation filter (!(my & 1))
70     * third dimension: same as second dimention, for horizontal interpolation
71     * so something like put_vp8_epel_pixels_tab[width>>3][2*!!my-(my&1)][2*!!mx-(mx&1)](..., mx, my)
72     */
73    vp8_mc_func put_vp8_epel_pixels_tab[3][3][3];
74    vp8_mc_func put_vp8_bilinear_pixels_tab[3][3][3];
75} VP8DSPContext;
76
77void ff_put_vp8_pixels16_c(uint8_t *dst, uint8_t *src, int stride, int h, int x, int y);
78void ff_put_vp8_pixels8_c(uint8_t *dst, uint8_t *src, int stride, int h, int x, int y);
79void ff_put_vp8_pixels4_c(uint8_t *dst, uint8_t *src, int stride, int h, int x, int y);
80
81void ff_vp8dsp_init(VP8DSPContext *c);
82void ff_vp8dsp_init_x86(VP8DSPContext *c);
83void ff_vp8dsp_init_altivec(VP8DSPContext *c);
84void ff_vp8dsp_init_arm(VP8DSPContext *c);
85
86#endif /* AVCODEC_VP8DSP_H */
87