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 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); 34 35 typedef 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, ptrdiff_t stride); 46 void (*vc1_h_overlap)(uint8_t *src, ptrdiff_t 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, ptrdiff_t left_stride, ptrdiff_t right_stride, int flags); 49 void (*vc1_v_loop_filter4)(uint8_t *src, ptrdiff_t stride, int pq); 50 void (*vc1_h_loop_filter4)(uint8_t *src, ptrdiff_t stride, int pq); 51 void (*vc1_v_loop_filter8)(uint8_t *src, ptrdiff_t stride, int pq); 52 void (*vc1_h_loop_filter8)(uint8_t *src, ptrdiff_t stride, int pq); 53 void (*vc1_v_loop_filter16)(uint8_t *src, ptrdiff_t stride, int pq); 54 void (*vc1_h_loop_filter16)(uint8_t *src, ptrdiff_t 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 84 /* Copy a buffer, removing startcode emulation escape bytes as we go */ 85 int (*vc1_unescape_buffer)(const uint8_t *src, int size, uint8_t *dst); 86 } VC1DSPContext; 87 88 void ff_vc1dsp_init(VC1DSPContext* c); 89 void ff_vc1dsp_init_aarch64(VC1DSPContext* dsp); 90 void ff_vc1dsp_init_arm(VC1DSPContext* dsp); 91 void ff_vc1dsp_init_ppc(VC1DSPContext *c); 92 void ff_vc1dsp_init_x86(VC1DSPContext* dsp); 93 void ff_vc1dsp_init_mips(VC1DSPContext* dsp); 94 void ff_vc1dsp_init_loongarch(VC1DSPContext* dsp); 95 96 #endif /* AVCODEC_VC1DSP_H */ 97