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/libavcodec/vc1dsp.h

http://github.com/FFmpeg/FFmpeg
C Header | 92 lines | 45 code | 11 blank | 36 comment | 0 complexity | 5f0c37bc0f53696cd70c4de6a1949e71 MD5 | raw file
 1/*
 2 * VC-1 and WMV3 decoder - DSP functions
 3 * Copyright (c) 2006 Konstantin Shishkov
 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 * VC-1 and WMV3 decoder
25 */
26
27#ifndef AVCODEC_VC1DSP_H
28#define AVCODEC_VC1DSP_H
29
30#include "hpeldsp.h"
31#include "h264chroma.h"
32
33typedef void (*vc1op_pixels_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, ptrdiff_t line_size, int h);
34
35typedef struct VC1DSPContext {
36    /* vc1 functions */
37    void (*vc1_inv_trans_8x8)(int16_t *b);
38    void (*vc1_inv_trans_8x4)(uint8_t *dest, ptrdiff_t stride, int16_t *block);
39    void (*vc1_inv_trans_4x8)(uint8_t *dest, ptrdiff_t stride, int16_t *block);
40    void (*vc1_inv_trans_4x4)(uint8_t *dest, ptrdiff_t stride, int16_t *block);
41    void (*vc1_inv_trans_8x8_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block);
42    void (*vc1_inv_trans_8x4_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block);
43    void (*vc1_inv_trans_4x8_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block);
44    void (*vc1_inv_trans_4x4_dc)(uint8_t *dest, ptrdiff_t stride, int16_t *block);
45    void (*vc1_v_overlap)(uint8_t *src, int stride);
46    void (*vc1_h_overlap)(uint8_t *src, int stride);
47    void (*vc1_v_s_overlap)(int16_t *top,  int16_t *bottom);
48    void (*vc1_h_s_overlap)(int16_t *left, int16_t *right, int left_stride, int right_stride, int flags);
49    void (*vc1_v_loop_filter4)(uint8_t *src, int stride, int pq);
50    void (*vc1_h_loop_filter4)(uint8_t *src, int stride, int pq);
51    void (*vc1_v_loop_filter8)(uint8_t *src, int stride, int pq);
52    void (*vc1_h_loop_filter8)(uint8_t *src, int stride, int pq);
53    void (*vc1_v_loop_filter16)(uint8_t *src, int stride, int pq);
54    void (*vc1_h_loop_filter16)(uint8_t *src, int stride, int pq);
55
56    /* put 8x8 block with bicubic interpolation and quarterpel precision
57     * last argument is actually round value instead of height
58     */
59    vc1op_pixels_func put_vc1_mspel_pixels_tab[2][16];
60    vc1op_pixels_func avg_vc1_mspel_pixels_tab[2][16];
61
62    /* This is really one func used in VC-1 decoding */
63    h264_chroma_mc_func put_no_rnd_vc1_chroma_pixels_tab[3];
64    h264_chroma_mc_func avg_no_rnd_vc1_chroma_pixels_tab[3];
65
66    /* Windows Media Image functions */
67    void (*sprite_h)(uint8_t *dst, const uint8_t *src, int offset, int advance, int count);
68    void (*sprite_v_single)(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset, int width);
69    void (*sprite_v_double_noscale)(uint8_t *dst, const uint8_t *src1a, const uint8_t *src2a, int alpha, int width);
70    void (*sprite_v_double_onescale)(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1,
71                                                   const uint8_t *src2a, int alpha, int width);
72    void (*sprite_v_double_twoscale)(uint8_t *dst, const uint8_t *src1a, const uint8_t *src1b, int offset1,
73                                                   const uint8_t *src2a, const uint8_t *src2b, int offset2,
74                                     int alpha, int width);
75
76    /**
77     * Search buf from the start for up to size bytes. Return the index
78     * of a zero byte, or >= size if not found. Ideally, use lookahead
79     * to filter out any zero bytes that are known to not be followed by
80     * one or more further zero bytes and a one byte.
81     */
82    int (*startcode_find_candidate)(const uint8_t *buf, int size);
83} VC1DSPContext;
84
85void ff_vc1dsp_init(VC1DSPContext* c);
86void ff_vc1dsp_init_aarch64(VC1DSPContext* dsp);
87void ff_vc1dsp_init_arm(VC1DSPContext* dsp);
88void ff_vc1dsp_init_ppc(VC1DSPContext *c);
89void ff_vc1dsp_init_x86(VC1DSPContext* dsp);
90void ff_vc1dsp_init_mips(VC1DSPContext* dsp);
91
92#endif /* AVCODEC_VC1DSP_H */