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52cc89dc45
Yadif filter assumed that the output timebase is always half of the input timebase. This is not true if halving the input time base is not representable as an AVRational causing the output timestamps to be invalidly scaled in such a case. So let's use av_reduce instead of av_mul_q when calculating the output time base and if the conversion is inexact then let's fall back to the original timebase which probably makes more parctical sense than using x/INT_MAX. Fixes invalidly scaled pts_time values in this command line: ffmpeg -f lavfi -i testsrc -vf settb=tb=1/2000000000,yadif,showinfo -f null none Signed-off-by: Marton Balint <cus@passwd.hu>
106 lines
3.3 KiB
C
106 lines
3.3 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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CCFifo 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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int pts_multiplier;
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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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int ff_yadif_config_output_common(AVFilterLink *outlink);
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void ff_yadif_uninit(AVFilterContext *ctx);
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extern const AVOption ff_yadif_options[];
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#endif /* AVFILTER_YADIF_H */
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