1 /* 2 * Copyright (c) 2011 Stefano Sabatini 3 * Copyright (c) 2010 Baptiste Coudurier 4 * Copyright (c) 2003 Michael Zucchi <notzed@ximian.com> 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License along 19 * with FFmpeg; if not, write to the Free Software Foundation, Inc., 20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 21 */ 22 23 /** 24 * @file 25 * temporal field interlace filter, ported from MPlayer/libmpcodecs 26 */ 27 #ifndef AVFILTER_TINTERLACE_H 28 #define AVFILTER_TINTERLACE_H 29 30 #include "libavutil/bswap.h" 31 #include "libavutil/opt.h" 32 #include "libavutil/pixdesc.h" 33 #include "drawutils.h" 34 #include "avfilter.h" 35 36 #define TINTERLACE_FLAG_VLPF 01 37 #define TINTERLACE_FLAG_CVLPF 2 38 #define TINTERLACE_FLAG_EXACT_TB 4 39 #define TINTERLACE_FLAG_BYPASS_IL 8 40 41 enum VLPFilter { 42 VLPF_OFF = 0, 43 VLPF_LIN = 1, 44 VLPF_CMP = 2, 45 }; 46 47 enum TInterlaceMode { 48 MODE_MERGE = 0, 49 MODE_DROP_EVEN, 50 MODE_DROP_ODD, 51 MODE_PAD, 52 MODE_INTERLEAVE_TOP, 53 MODE_INTERLEAVE_BOTTOM, 54 MODE_INTERLACEX2, 55 MODE_MERGEX2, 56 MODE_NB, 57 }; 58 59 enum InterlaceScanMode { 60 MODE_TFF = 0, 61 MODE_BFF, 62 }; 63 64 typedef struct TInterlaceContext { 65 const AVClass *class; 66 int mode; ///< TInterlaceMode, interlace mode selected 67 AVRational preout_time_base; 68 int flags; ///< flags affecting interlacing algorithm 69 int lowpass; ///< legacy interlace filter lowpass mode 70 int vsub; ///< chroma vertical subsampling 71 AVFrame *cur; 72 AVFrame *next; 73 uint8_t *black_data[4]; ///< buffer used to fill padded lines 74 int black_linesize[4]; 75 FFDrawContext draw; 76 FFDrawColor color; 77 const AVPixFmtDescriptor *csp; 78 void (*lowpass_line)(uint8_t *dstp, ptrdiff_t width, const uint8_t *srcp, 79 ptrdiff_t mref, ptrdiff_t pref, int clip_max); 80 } TInterlaceContext; 81 82 void ff_tinterlace_init_x86(TInterlaceContext *interlace); 83 84 #endif /* AVFILTER_TINTERLACE_H */ 85