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https://github.com/FFmpeg/FFmpeg.git
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cecf35ae3e
Various deinterlacing modes have the effect of doubling the framerate, and we need to ensure that the caption data isn't duplicated (or else you get double captions on-screen). Use the new ccfifo mechanism for yadif (and yadif_cuda and bwdif since they use the same yadif core) so that CEA-708 data is properly preserved through this filter. Signed-off-by: Devin Heitmueller <dheitmueller@ltnglobal.com> Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVFILTER_YADIF_H
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#define AVFILTER_YADIF_H
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "ccfifo.h"
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enum YADIFMode {
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YADIF_MODE_SEND_FRAME = 0, ///< send 1 frame for each frame
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YADIF_MODE_SEND_FIELD = 1, ///< send 1 frame for each field
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YADIF_MODE_SEND_FRAME_NOSPATIAL = 2, ///< send 1 frame for each frame but skips spatial interlacing check
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YADIF_MODE_SEND_FIELD_NOSPATIAL = 3, ///< send 1 frame for each field but skips spatial interlacing check
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};
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enum YADIFParity {
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YADIF_PARITY_TFF = 0, ///< top field first
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YADIF_PARITY_BFF = 1, ///< bottom field first
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YADIF_PARITY_AUTO = -1, ///< auto detection
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};
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enum YADIFDeint {
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YADIF_DEINT_ALL = 0, ///< deinterlace all frames
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YADIF_DEINT_INTERLACED = 1, ///< only deinterlace frames marked as interlaced
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};
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enum YADIFCurrentField {
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YADIF_FIELD_BACK_END = -1, ///< The last frame in a sequence
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YADIF_FIELD_END = 0, ///< The first or last field in a sequence
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YADIF_FIELD_NORMAL = 1, ///< A normal field in the middle of a sequence
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};
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typedef struct YADIFContext {
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const AVClass *class;
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int mode; ///< YADIFMode
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int parity; ///< YADIFParity
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int deint; ///< YADIFDeint
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int frame_pending;
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AVFrame *cur;
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AVFrame *next;
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AVFrame *prev;
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AVFrame *out;
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void (*filter)(AVFilterContext *ctx, AVFrame *dstpic, int parity, int tff);
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/**
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* Required alignment for filter_line
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*/
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void (*filter_line)(void *dst,
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void *prev, void *cur, void *next,
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int w, int prefs, int mrefs, int parity, int mode);
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void (*filter_edges)(void *dst, void *prev, void *cur, void *next,
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int w, int prefs, int mrefs, int parity, int mode);
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const AVPixFmtDescriptor *csp;
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int eof;
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uint8_t *temp_line;
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int temp_line_size;
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AVCCFifo *cc_fifo;
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/*
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* An algorithm that treats first and/or last fields in a sequence
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* differently can use this to detect those cases. It is the algorithm's
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* responsibility to set the value to YADIF_FIELD_NORMAL after processing
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* the first field.
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*/
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int current_field; ///< YADIFCurrentField
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} YADIFContext;
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void ff_yadif_init_x86(YADIFContext *yadif);
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int ff_yadif_filter_frame(AVFilterLink *link, AVFrame *frame);
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int ff_yadif_request_frame(AVFilterLink *link);
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extern const AVOption ff_yadif_options[];
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#endif /* AVFILTER_YADIF_H */
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