2 * VC-1 and WMV3 decoder - DSP functions
3 * Copyright (c) 2006 Konstantin Shishkov
5 * This file is part of FFmpeg.
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.
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.
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
24 * VC-1 and WMV3 decoder
28 #ifndef AVCODEC_VC1DSP_H
29 #define AVCODEC_VC1DSP_H
32 #include "h264chroma.h"
34 typedef void (*vc1op_pixels_func
)(uint8_t *block
/*align width (8 or 16)*/, const uint8_t *pixels
/*align 1*/, ptrdiff_t line_size
, int h
);
36 typedef struct VC1DSPContext
{
38 void (*vc1_inv_trans_8x8
)(int16_t *b
);
39 void (*vc1_inv_trans_8x4
)(uint8_t *dest
, int line_size
, int16_t *block
);
40 void (*vc1_inv_trans_4x8
)(uint8_t *dest
, int line_size
, int16_t *block
);
41 void (*vc1_inv_trans_4x4
)(uint8_t *dest
, int line_size
, int16_t *block
);
42 void (*vc1_inv_trans_8x8_dc
)(uint8_t *dest
, int line_size
, int16_t *block
);
43 void (*vc1_inv_trans_8x4_dc
)(uint8_t *dest
, int line_size
, int16_t *block
);
44 void (*vc1_inv_trans_4x8_dc
)(uint8_t *dest
, int line_size
, int16_t *block
);
45 void (*vc1_inv_trans_4x4_dc
)(uint8_t *dest
, int line_size
, int16_t *block
);
46 void (*vc1_v_overlap
)(uint8_t *src
, int stride
);
47 void (*vc1_h_overlap
)(uint8_t *src
, int stride
);
48 void (*vc1_v_s_overlap
)(int16_t *top
, int16_t *bottom
);
49 void (*vc1_h_s_overlap
)(int16_t *left
, int16_t *right
);
50 void (*vc1_v_loop_filter4
)(uint8_t *src
, int stride
, int pq
);
51 void (*vc1_h_loop_filter4
)(uint8_t *src
, int stride
, int pq
);
52 void (*vc1_v_loop_filter8
)(uint8_t *src
, int stride
, int pq
);
53 void (*vc1_h_loop_filter8
)(uint8_t *src
, int stride
, int pq
);
54 void (*vc1_v_loop_filter16
)(uint8_t *src
, int stride
, int pq
);
55 void (*vc1_h_loop_filter16
)(uint8_t *src
, int stride
, int pq
);
57 /* put 8x8 block with bicubic interpolation and quarterpel precision
58 * last argument is actually round value instead of height
60 vc1op_pixels_func put_vc1_mspel_pixels_tab
[2][16];
61 vc1op_pixels_func avg_vc1_mspel_pixels_tab
[2][16];
63 /* This is really one func used in VC-1 decoding */
64 h264_chroma_mc_func put_no_rnd_vc1_chroma_pixels_tab
[3];
65 h264_chroma_mc_func avg_no_rnd_vc1_chroma_pixels_tab
[3];
67 /* Windows Media Image functions */
68 void (*sprite_h
)(uint8_t *dst
, const uint8_t *src
, int offset
, int advance
, int count
);
69 void (*sprite_v_single
)(uint8_t *dst
, const uint8_t *src1a
, const uint8_t *src1b
, int offset
, int width
);
70 void (*sprite_v_double_noscale
)(uint8_t *dst
, const uint8_t *src1a
, const uint8_t *src2a
, int alpha
, int width
);
71 void (*sprite_v_double_onescale
)(uint8_t *dst
, const uint8_t *src1a
, const uint8_t *src1b
, int offset1
,
72 const uint8_t *src2a
, int alpha
, int width
);
73 void (*sprite_v_double_twoscale
)(uint8_t *dst
, const uint8_t *src1a
, const uint8_t *src1b
, int offset1
,
74 const uint8_t *src2a
, const uint8_t *src2b
, int offset2
,
75 int alpha
, int width
);
78 * Search buf from the start for up to size bytes. Return the index
79 * of a zero byte, or >= size if not found. Ideally, use lookahead
80 * to filter out any zero bytes that are known to not be followed by
81 * one or more further zero bytes and a one byte.
83 int (*startcode_find_candidate
)(const uint8_t *buf
, int size
);
86 void ff_vc1dsp_init(VC1DSPContext
* c
);
87 void ff_vc1dsp_init_aarch64(VC1DSPContext
* dsp
);
88 void ff_vc1dsp_init_arm(VC1DSPContext
* dsp
);
89 void ff_vc1dsp_init_ppc(VC1DSPContext
*c
);
90 void ff_vc1dsp_init_x86(VC1DSPContext
* dsp
);
92 #endif /* AVCODEC_VC1DSP_H */