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mpv/demux/timeline.h

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player: use a separate context for timeline loader stuff Instead of accessing MPContext in player/timeline/*, create a separate context struct, which the timeline loaders fill out. It turns out that there's not much in the way too big MPContext that these need to access. One major PITA is managing (and closing) the set of open demuxers. The problem is that we need a list of all demuxers to make sure no unneeded streams are enabled. This adds a callback to the demuxer_desc struct, with the intention of leaving to to the demuxer to call the right loader, instead of explicitly checking the demuxer type and dispatching manually in common code. I also considered making the timeline part of the demuxer state, but decided against: it's too much of a mess wrt. memory management and threading, and also doesn't make it clear who owns the child demuxers. With the struct timeline decoupled from the demuxer state, it's at least somewhat clear that the child demuxers are independent from the "main" demuxer. The actual changes to player/timeline/* are separated in the following commits, because they're quite verbose. Some artifacts will be removed later as soon as there's only 1 timeline loading mechanism.
2015-02-17 22:46:12 +00:00
#ifndef MP_TIMELINE_H_
#define MP_TIMELINE_H_
demux_edl, cue, mkv: clean up timeline stuff slightly Remove the singly linked list hack, replace it with a slightly more proper data structure. This probably gets rid of a few minor bugs along the way, caused by the awkward nonsensical sharing/duplication of some fields. Another change (because I'm touching everything related to timeline anyway) is that I'm removing the special semantics for parts[num_parts]. This is now strictly out of bounds, and instead of using the start time of the next/beyond-last part, there is an end time field now. Unfortunately, this also requires touching the code for cue and mkv ordered chapters. From some superficial testing, they still seem to mostly work. One observable change is that the "no_chapters" header is per-stream now, which is arguably more correct, and getting the old behavior would require adding code to handle it as special-case, so just adjust ytdl_hook.lua to the new behavior.
2019-01-11 12:52:29 +00:00
// Single segment in a timeline.
player: use a separate context for timeline loader stuff Instead of accessing MPContext in player/timeline/*, create a separate context struct, which the timeline loaders fill out. It turns out that there's not much in the way too big MPContext that these need to access. One major PITA is managing (and closing) the set of open demuxers. The problem is that we need a list of all demuxers to make sure no unneeded streams are enabled. This adds a callback to the demuxer_desc struct, with the intention of leaving to to the demuxer to call the right loader, instead of explicitly checking the demuxer type and dispatching manually in common code. I also considered making the timeline part of the demuxer state, but decided against: it's too much of a mess wrt. memory management and threading, and also doesn't make it clear who owns the child demuxers. With the struct timeline decoupled from the demuxer state, it's at least somewhat clear that the child demuxers are independent from the "main" demuxer. The actual changes to player/timeline/* are separated in the following commits, because they're quite verbose. Some artifacts will be removed later as soon as there's only 1 timeline loading mechanism.
2015-02-17 22:46:12 +00:00
struct timeline_part {
demux_edl, cue, mkv: clean up timeline stuff slightly Remove the singly linked list hack, replace it with a slightly more proper data structure. This probably gets rid of a few minor bugs along the way, caused by the awkward nonsensical sharing/duplication of some fields. Another change (because I'm touching everything related to timeline anyway) is that I'm removing the special semantics for parts[num_parts]. This is now strictly out of bounds, and instead of using the start time of the next/beyond-last part, there is an end time field now. Unfortunately, this also requires touching the code for cue and mkv ordered chapters. From some superficial testing, they still seem to mostly work. One observable change is that the "no_chapters" header is per-stream now, which is arguably more correct, and getting the old behavior would require adding code to handle it as special-case, so just adjust ytdl_hook.lua to the new behavior.
2019-01-11 12:52:29 +00:00
// (end time must match with start time of the next part)
double start, end;
player: use a separate context for timeline loader stuff Instead of accessing MPContext in player/timeline/*, create a separate context struct, which the timeline loaders fill out. It turns out that there's not much in the way too big MPContext that these need to access. One major PITA is managing (and closing) the set of open demuxers. The problem is that we need a list of all demuxers to make sure no unneeded streams are enabled. This adds a callback to the demuxer_desc struct, with the intention of leaving to to the demuxer to call the right loader, instead of explicitly checking the demuxer type and dispatching manually in common code. I also considered making the timeline part of the demuxer state, but decided against: it's too much of a mess wrt. memory management and threading, and also doesn't make it clear who owns the child demuxers. With the struct timeline decoupled from the demuxer state, it's at least somewhat clear that the child demuxers are independent from the "main" demuxer. The actual changes to player/timeline/* are separated in the following commits, because they're quite verbose. Some artifacts will be removed later as soon as there's only 1 timeline loading mechanism.
2015-02-17 22:46:12 +00:00
double source_start;
ytdl_hook, edl: implement pseudo-DASH support We use the metadata provided by youtube-dl to sort-of implement fragmented DASH streaming. This is all a bit hacky, but hopefully a makeshift solution until libavformat has proper mechanisms. (Although in danger of being one of those temporary hacks that become permanent.)
2017-01-30 18:38:43 +00:00
char *url;
player: use a separate context for timeline loader stuff Instead of accessing MPContext in player/timeline/*, create a separate context struct, which the timeline loaders fill out. It turns out that there's not much in the way too big MPContext that these need to access. One major PITA is managing (and closing) the set of open demuxers. The problem is that we need a list of all demuxers to make sure no unneeded streams are enabled. This adds a callback to the demuxer_desc struct, with the intention of leaving to to the demuxer to call the right loader, instead of explicitly checking the demuxer type and dispatching manually in common code. I also considered making the timeline part of the demuxer state, but decided against: it's too much of a mess wrt. memory management and threading, and also doesn't make it clear who owns the child demuxers. With the struct timeline decoupled from the demuxer state, it's at least somewhat clear that the child demuxers are independent from the "main" demuxer. The actual changes to player/timeline/* are separated in the following commits, because they're quite verbose. Some artifacts will be removed later as soon as there's only 1 timeline loading mechanism.
2015-02-17 22:46:12 +00:00
struct demuxer *source;
};
demux_edl, cue, mkv: clean up timeline stuff slightly Remove the singly linked list hack, replace it with a slightly more proper data structure. This probably gets rid of a few minor bugs along the way, caused by the awkward nonsensical sharing/duplication of some fields. Another change (because I'm touching everything related to timeline anyway) is that I'm removing the special semantics for parts[num_parts]. This is now strictly out of bounds, and instead of using the start time of the next/beyond-last part, there is an end time field now. Unfortunately, this also requires touching the code for cue and mkv ordered chapters. From some superficial testing, they still seem to mostly work. One observable change is that the "no_chapters" header is per-stream now, which is arguably more correct, and getting the old behavior would require adding code to handle it as special-case, so just adjust ytdl_hook.lua to the new behavior.
2019-01-11 12:52:29 +00:00
// Timeline formed by a single demuxer. Multiple pars are used to get tracks
// that require a separate opened demuxer, such as separate audio tracks. (For
// example, for ordered chapters there is only a single par, because all streams
// demux from the same file at a given time, while for DASH-style video+audio,
// each track would have its own timeline.)
// Note that demuxer instances must not be shared across timeline_pars. This
// would conflict in demux_timeline.c.
// "par" is short for parallel stream.
struct timeline_par {
bstr init_fragment;
bool dash, no_clip;
// Segments to play, ordered by time.
struct timeline_part *parts;
int num_parts;
// Which source defines the overall track list (over the full timeline).
struct demuxer *track_layout;
};
player: use a separate context for timeline loader stuff Instead of accessing MPContext in player/timeline/*, create a separate context struct, which the timeline loaders fill out. It turns out that there's not much in the way too big MPContext that these need to access. One major PITA is managing (and closing) the set of open demuxers. The problem is that we need a list of all demuxers to make sure no unneeded streams are enabled. This adds a callback to the demuxer_desc struct, with the intention of leaving to to the demuxer to call the right loader, instead of explicitly checking the demuxer type and dispatching manually in common code. I also considered making the timeline part of the demuxer state, but decided against: it's too much of a mess wrt. memory management and threading, and also doesn't make it clear who owns the child demuxers. With the struct timeline decoupled from the demuxer state, it's at least somewhat clear that the child demuxers are independent from the "main" demuxer. The actual changes to player/timeline/* are separated in the following commits, because they're quite verbose. Some artifacts will be removed later as soon as there's only 1 timeline loading mechanism.
2015-02-17 22:46:12 +00:00
struct timeline {
struct mpv_global *global;
struct mp_log *log;
demux: timeline: honor quit requests
2015-02-20 21:08:02 +00:00
struct mp_cancel *cancel;
player: use a separate context for timeline loader stuff Instead of accessing MPContext in player/timeline/*, create a separate context struct, which the timeline loaders fill out. It turns out that there's not much in the way too big MPContext that these need to access. One major PITA is managing (and closing) the set of open demuxers. The problem is that we need a list of all demuxers to make sure no unneeded streams are enabled. This adds a callback to the demuxer_desc struct, with the intention of leaving to to the demuxer to call the right loader, instead of explicitly checking the demuxer type and dispatching manually in common code. I also considered making the timeline part of the demuxer state, but decided against: it's too much of a mess wrt. memory management and threading, and also doesn't make it clear who owns the child demuxers. With the struct timeline decoupled from the demuxer state, it's at least somewhat clear that the child demuxers are independent from the "main" demuxer. The actual changes to player/timeline/* are separated in the following commits, because they're quite verbose. Some artifacts will be removed later as soon as there's only 1 timeline loading mechanism.
2015-02-17 22:46:12 +00:00
demux_timeline, demux_edl: correctly enable cache in pseudo-DASH mode In pseudo-DASH mode, we may have no real streams opened until the demuxer layer is fully loaded and playback actually starts. The only hint that the stream is from network is, at that point, the init segment, which is only opened as stream, and then separately as demuxer (which is dumb but happened to fit the internal architecture better). So just propagate the flags from the init segment stream. Seems like an annoyance, but doesn't hurt that much I guess. (Until someone gets the idea to pass the init segment data inline or so, but nothing does that.) The sample link in the linked issue will probably soon switch to another format, because that service always does this after recent uploads or so. Fixes: #7038
2019-10-08 21:55:05 +00:00
bool is_network, is_streaming;
demux_edl, cue, mkv: slightly nicer file format indication Instead of just using "edl/" for the file format, report mkv_oc if it's generated from ordered chapters, "cue/" if from .cue, "multi/" if it's from EDL but only for adding separate streams, "dash/" if it's from EDL but only using the DASH hack, and "edl/" for everything else. The EDL variants are mostly special-cased to the variants the ytdl wrapper usually generates. This has no effect other than what the command.c file-format property returns.
2019-01-11 13:10:41 +00:00
const char *format;
demux_edl, cue, mkv: clean up timeline stuff slightly Remove the singly linked list hack, replace it with a slightly more proper data structure. This probably gets rid of a few minor bugs along the way, caused by the awkward nonsensical sharing/duplication of some fields. Another change (because I'm touching everything related to timeline anyway) is that I'm removing the special semantics for parts[num_parts]. This is now strictly out of bounds, and instead of using the start time of the next/beyond-last part, there is an end time field now. Unfortunately, this also requires touching the code for cue and mkv ordered chapters. From some superficial testing, they still seem to mostly work. One observable change is that the "no_chapters" header is per-stream now, which is arguably more correct, and getting the old behavior would require adding code to handle it as special-case, so just adjust ytdl_hook.lua to the new behavior.
2019-01-11 12:52:29 +00:00
// main source, and all other sources (this usually only has special meaning
// for memory management; mostly compensates for the lack of refcounting)
player: use a separate context for timeline loader stuff Instead of accessing MPContext in player/timeline/*, create a separate context struct, which the timeline loaders fill out. It turns out that there's not much in the way too big MPContext that these need to access. One major PITA is managing (and closing) the set of open demuxers. The problem is that we need a list of all demuxers to make sure no unneeded streams are enabled. This adds a callback to the demuxer_desc struct, with the intention of leaving to to the demuxer to call the right loader, instead of explicitly checking the demuxer type and dispatching manually in common code. I also considered making the timeline part of the demuxer state, but decided against: it's too much of a mess wrt. memory management and threading, and also doesn't make it clear who owns the child demuxers. With the struct timeline decoupled from the demuxer state, it's at least somewhat clear that the child demuxers are independent from the "main" demuxer. The actual changes to player/timeline/* are separated in the following commits, because they're quite verbose. Some artifacts will be removed later as soon as there's only 1 timeline loading mechanism.
2015-02-17 22:46:12 +00:00
struct demuxer *demuxer;
struct demuxer **sources;
int num_sources;
demux_edl, cue, mkv: clean up timeline stuff slightly Remove the singly linked list hack, replace it with a slightly more proper data structure. This probably gets rid of a few minor bugs along the way, caused by the awkward nonsensical sharing/duplication of some fields. Another change (because I'm touching everything related to timeline anyway) is that I'm removing the special semantics for parts[num_parts]. This is now strictly out of bounds, and instead of using the start time of the next/beyond-last part, there is an end time field now. Unfortunately, this also requires touching the code for cue and mkv ordered chapters. From some superficial testing, they still seem to mostly work. One observable change is that the "no_chapters" header is per-stream now, which is arguably more correct, and getting the old behavior would require adding code to handle it as special-case, so just adjust ytdl_hook.lua to the new behavior.
2019-01-11 12:52:29 +00:00
// Description of timeline ranges, possibly multiple parallel ones.
struct timeline_par **pars;
int num_pars;
player: use a separate context for timeline loader stuff Instead of accessing MPContext in player/timeline/*, create a separate context struct, which the timeline loaders fill out. It turns out that there's not much in the way too big MPContext that these need to access. One major PITA is managing (and closing) the set of open demuxers. The problem is that we need a list of all demuxers to make sure no unneeded streams are enabled. This adds a callback to the demuxer_desc struct, with the intention of leaving to to the demuxer to call the right loader, instead of explicitly checking the demuxer type and dispatching manually in common code. I also considered making the timeline part of the demuxer state, but decided against: it's too much of a mess wrt. memory management and threading, and also doesn't make it clear who owns the child demuxers. With the struct timeline decoupled from the demuxer state, it's at least somewhat clear that the child demuxers are independent from the "main" demuxer. The actual changes to player/timeline/* are separated in the following commits, because they're quite verbose. Some artifacts will be removed later as soon as there's only 1 timeline loading mechanism.
2015-02-17 22:46:12 +00:00
struct demux_chapter *chapters;
int num_chapters;
demux_edl, cue, mkv: clean up timeline stuff slightly Remove the singly linked list hack, replace it with a slightly more proper data structure. This probably gets rid of a few minor bugs along the way, caused by the awkward nonsensical sharing/duplication of some fields. Another change (because I'm touching everything related to timeline anyway) is that I'm removing the special semantics for parts[num_parts]. This is now strictly out of bounds, and instead of using the start time of the next/beyond-last part, there is an end time field now. Unfortunately, this also requires touching the code for cue and mkv ordered chapters. From some superficial testing, they still seem to mostly work. One observable change is that the "no_chapters" header is per-stream now, which is arguably more correct, and getting the old behavior would require adding code to handle it as special-case, so just adjust ytdl_hook.lua to the new behavior.
2019-01-11 12:52:29 +00:00
// global tags, attachments, editions
struct demuxer *meta;
player: use a separate context for timeline loader stuff Instead of accessing MPContext in player/timeline/*, create a separate context struct, which the timeline loaders fill out. It turns out that there's not much in the way too big MPContext that these need to access. One major PITA is managing (and closing) the set of open demuxers. The problem is that we need a list of all demuxers to make sure no unneeded streams are enabled. This adds a callback to the demuxer_desc struct, with the intention of leaving to to the demuxer to call the right loader, instead of explicitly checking the demuxer type and dispatching manually in common code. I also considered making the timeline part of the demuxer state, but decided against: it's too much of a mess wrt. memory management and threading, and also doesn't make it clear who owns the child demuxers. With the struct timeline decoupled from the demuxer state, it's at least somewhat clear that the child demuxers are independent from the "main" demuxer. The actual changes to player/timeline/* are separated in the following commits, because they're quite verbose. Some artifacts will be removed later as soon as there's only 1 timeline loading mechanism.
2015-02-17 22:46:12 +00:00
};
struct timeline *timeline_load(struct mpv_global *global, struct mp_log *log,
struct demuxer *demuxer);
void timeline_destroy(struct timeline *tl);
#endif
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