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vp8dsp.h
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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 
33 typedef 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 
37 typedef 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 
84 void ff_put_vp8_pixels16_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
85  int h, int x, int y);
86 void ff_put_vp8_pixels8_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
87  int h, int x, int y);
88 void ff_put_vp8_pixels4_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
89  int h, int x, int y);
90 
91 void ff_vp7dsp_init(VP8DSPContext *c);
92 
93 void ff_vp78dsp_init(VP8DSPContext *c);
94 void ff_vp78dsp_init_arm(VP8DSPContext *c);
95 void ff_vp78dsp_init_ppc(VP8DSPContext *c);
96 void ff_vp78dsp_init_x86(VP8DSPContext *c);
97 
98 void ff_vp8dsp_init(VP8DSPContext *c);
99 void ff_vp8dsp_init_arm(VP8DSPContext *c);
100 void ff_vp8dsp_init_x86(VP8DSPContext *c);
101 
102 #define IS_VP7 1
103 #define IS_VP8 0
104 
105 #endif /* AVCODEC_VP8DSP_H */
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