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+/*
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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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+
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+#ifndef FFTOOLS_FFMPEG_FILTER_H
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+#define FFTOOLS_FFMPEG_FILTER_H
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+
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+#include "ffmpeg.h"
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+
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+#include <stdint.h>
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+
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+#include "ffmpeg_sched.h"
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+#include "sync_queue.h"
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+
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+#include "libavfilter/avfilter.h"
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+
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+#include "libavutil/avutil.h"
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+#include "libavutil/dict.h"
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+#include "libavutil/fifo.h"
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+#include "libavutil/pixfmt.h"
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+#include "libavutil/rational.h"
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+#include "libavutil/bprint.h"
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+#include "libavutil/channel_layout.h"
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+#include "libavutil/downmix_info.h"
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+
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+typedef struct FilterGraphPriv {
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+ FilterGraph fg;
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+
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+ // name used for logging
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+ char log_name[32];
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+
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+ int is_simple;
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+ // true when the filtergraph contains only meta filters
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+ // that do not modify the frame data
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+ int is_meta;
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+ // source filters are present in the graph
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+ int have_sources;
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+ int disable_conversions;
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+
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+ unsigned nb_outputs_done;
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+
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+ const char *graph_desc;
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+
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+ int nb_threads;
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+
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+ // frame for temporarily holding output from the filtergraph
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+ AVFrame *frame;
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+ // frame for sending output to the encoder
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+ AVFrame *frame_enc;
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+
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+ Scheduler *sch;
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+ unsigned sch_idx;
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+
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+ AVBPrint graph_print_buf;
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+
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+} FilterGraphPriv;
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+
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+static inline FilterGraphPriv *fgp_from_fg(FilterGraph *fg)
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+{
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+ return (FilterGraphPriv*)fg;
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+}
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+
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+static inline const FilterGraphPriv *cfgp_from_cfg(const FilterGraph *fg)
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+{
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+ return (const FilterGraphPriv*)fg;
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+}
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+
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+typedef struct InputFilterPriv {
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+ InputFilter ifilter;
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+
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+ InputFilterOptions opts;
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+
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+ int index;
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+
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+ AVFilterContext *filter;
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+
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+ // used to hold submitted input
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+ AVFrame *frame;
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+
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+ /* for filters that are not yet bound to an input stream,
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+ * this stores the input linklabel, if any */
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+ uint8_t *linklabel;
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+
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+ // filter data type
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+ enum AVMediaType type;
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+ // source data type: AVMEDIA_TYPE_SUBTITLE for sub2video,
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+ // same as type otherwise
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+ enum AVMediaType type_src;
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+
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+ int eof;
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+ int bound;
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+ int drop_warned;
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+ uint64_t nb_dropped;
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+
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+ // parameters configured for this input
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+ int format;
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+
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+ int width, height;
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+ AVRational sample_aspect_ratio;
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+ enum AVColorSpace color_space;
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+ enum AVColorRange color_range;
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+
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+ int sample_rate;
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+ AVChannelLayout ch_layout;
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+
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+ AVRational time_base;
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+
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+ AVFrameSideData **side_data;
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+ int nb_side_data;
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+
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+ AVFifo *frame_queue;
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+
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+ AVBufferRef *hw_frames_ctx;
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+
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+ int displaymatrix_present;
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+ int displaymatrix_applied;
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+ int32_t displaymatrix[9];
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+
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+ int downmixinfo_present;
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+ AVDownmixInfo downmixinfo;
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+
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+ struct {
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+ AVFrame *frame;
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+
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+ int64_t last_pts;
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+ int64_t end_pts;
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+
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+ /// marks if sub2video_update should force an initialization
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+ unsigned int initialize;
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+ } sub2video;
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+} InputFilterPriv;
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+
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+static inline InputFilterPriv *ifp_from_ifilter(InputFilter *ifilter)
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+{
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+ return (InputFilterPriv*)ifilter;
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+}
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+
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+typedef struct FPSConvContext {
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+ AVFrame *last_frame;
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+ /* number of frames emitted by the video-encoding sync code */
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+ int64_t frame_number;
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+ /* history of nb_frames_prev, i.e. the number of times the
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+ * previous frame was duplicated by vsync code in recent
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+ * do_video_out() calls */
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+ int64_t frames_prev_hist[3];
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+
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+ uint64_t dup_warning;
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+
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+ int last_dropped;
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+ int dropped_keyframe;
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+
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+ enum VideoSyncMethod vsync_method;
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+
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+ AVRational framerate;
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+ AVRational framerate_max;
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+ const AVRational *framerate_supported;
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+ int framerate_clip;
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+} FPSConvContext;
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+
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+
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+typedef struct OutputFilterPriv {
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+ OutputFilter ofilter;
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+
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+ int index;
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+
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+ void *log_parent;
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+ char log_name[32];
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+
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+ char *name;
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+
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+ AVFilterContext *filter;
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+
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+ /* desired output stream properties */
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+ int format;
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+ int width, height;
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+ int sample_rate;
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+ AVChannelLayout ch_layout;
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+ enum AVColorSpace color_space;
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+ enum AVColorRange color_range;
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+
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+ AVFrameSideData **side_data;
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+ int nb_side_data;
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+
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+ // time base in which the output is sent to our downstream
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+ // does not need to match the filtersink's timebase
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+ AVRational tb_out;
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+ // at least one frame with the above timebase was sent
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+ // to our downstream, so it cannot change anymore
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+ int tb_out_locked;
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+
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+ AVRational sample_aspect_ratio;
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+
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+ AVDictionary *sws_opts;
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+ AVDictionary *swr_opts;
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+
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+ // those are only set if no format is specified and the encoder gives us multiple options
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+ // They point directly to the relevant lists of the encoder.
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+ const int *formats;
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+ const AVChannelLayout *ch_layouts;
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+ const int *sample_rates;
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+ const enum AVColorSpace *color_spaces;
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+ const enum AVColorRange *color_ranges;
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+
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+ AVRational enc_timebase;
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+ int64_t trim_start_us;
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+ int64_t trim_duration_us;
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+ // offset for output timestamps, in AV_TIME_BASE_Q
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+ int64_t ts_offset;
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+ int64_t next_pts;
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+ FPSConvContext fps;
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+
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+ unsigned flags;
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+} OutputFilterPriv;
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+
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+static inline OutputFilterPriv *ofp_from_ofilter(OutputFilter *ofilter)
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+{
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+ return (OutputFilterPriv*)ofilter;
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+}
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+
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+#endif /* FFTOOLS_FFMPEG_FILTER_H */
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