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
27 #ifndef AVCODEC_VC1DSP_H
28 #define AVCODEC_VC1DSP_H
31 #include "h264chroma.h"
33 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);
35 typedef struct VC1DSPContext {
37 void (*vc1_inv_trans_8x8)(int16_t *b);
38 void (*vc1_inv_trans_8x4)(uint8_t *dest, int line_size, int16_t *block);
39 void (*vc1_inv_trans_4x8)(uint8_t *dest, int line_size, int16_t *block);
40 void (*vc1_inv_trans_4x4)(uint8_t *dest, int line_size, int16_t *block);
41 void (*vc1_inv_trans_8x8_dc)(uint8_t *dest, int line_size, int16_t *block);
42 void (*vc1_inv_trans_8x4_dc)(uint8_t *dest, int line_size, int16_t *block);
43 void (*vc1_inv_trans_4x8_dc)(uint8_t *dest, int line_size, int16_t *block);
44 void (*vc1_inv_trans_4x4_dc)(uint8_t *dest, int line_size, 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);
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);
56 /* put 8x8 block with bicubic interpolation and quarterpel precision
57 * last argument is actually round value instead of height
59 vc1op_pixels_func put_vc1_mspel_pixels_tab[2][16];
60 vc1op_pixels_func avg_vc1_mspel_pixels_tab[2][16];
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];
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);
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.
82 int (*startcode_find_candidate)(const uint8_t *buf, int size);
85 void ff_vc1dsp_init(VC1DSPContext* c);
86 void ff_vc1dsp_init_aarch64(VC1DSPContext* dsp);
87 void ff_vc1dsp_init_arm(VC1DSPContext* dsp);
88 void ff_vc1dsp_init_ppc(VC1DSPContext *c);
89 void ff_vc1dsp_init_x86(VC1DSPContext* dsp);
91 #endif /* AVCODEC_VC1DSP_H */