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6f0297dff4
Until now, delay-loading was for files with single tracks only (basically what DASH and HLS like to expose, so adaptive streaming and codec selection becomes easier - for sites, not for us). But they also provide some interleaved versions, probably for compatibility. Until now, we were forced to eagerly load it (making startup slightly slower). But there is not much missing. We just need a way to provide multiple metadata entries, and use them to represent each track. A side effect is now that the "track_meta" header can be used for normal EDL files too.
72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
#ifndef MP_TIMELINE_H_
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#define MP_TIMELINE_H_
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#include "common/common.h"
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// Single segment in a timeline.
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struct timeline_part {
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// (end time must match with start time of the next part)
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double start, end;
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double source_start;
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char *url;
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struct demuxer *source;
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};
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// Timeline formed by a single demuxer. Multiple pars are used to get tracks
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// that require a separate opened demuxer, such as separate audio tracks. (For
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// example, for ordered chapters there is only a single par, because all streams
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// demux from the same file at a given time, while for DASH-style video+audio,
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// each track would have its own timeline.)
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// Note that demuxer instances must not be shared across timeline_pars. This
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// would conflict in demux_timeline.c.
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// "par" is short for parallel stream.
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struct timeline_par {
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bstr init_fragment;
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bool dash, no_clip, delay_open;
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// Of any of these, _some_ fields are used. If delay_open==true, this
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// describes each sub-track, and the codec info is used.
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// In both cases, the metadata is mapped to actual tracks in specific ways.
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struct sh_stream **sh_meta;
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int num_sh_meta;
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// Segments to play, ordered by time.
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struct timeline_part *parts;
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int num_parts;
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// Which source defines the overall track list (over the full timeline).
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struct demuxer *track_layout;
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};
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struct timeline {
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struct mpv_global *global;
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struct mp_log *log;
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struct mp_cancel *cancel;
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bool is_network, is_streaming;
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int stream_origin;
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const char *format;
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// main source, and all other sources (this usually only has special meaning
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// for memory management; mostly compensates for the lack of refcounting)
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struct demuxer *demuxer;
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struct demuxer **sources;
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int num_sources;
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// Description of timeline ranges, possibly multiple parallel ones.
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struct timeline_par **pars;
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int num_pars;
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struct demux_chapter *chapters;
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int num_chapters;
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// global tags, attachments, editions
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struct demuxer *meta;
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};
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struct timeline *timeline_load(struct mpv_global *global, struct mp_log *log,
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struct demuxer *demuxer);
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void timeline_destroy(struct timeline *tl);
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#endif
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