path: root/common/tags.c
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* demux: support for some kinds of timed metadatawm42018-04-181-7/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This makes ICY title changes show up at approximately the correct time, even if the demuxer buffer is huge. (It'll still be wrong if the stream byte cache contains a meaningful amount of data.) It should have the same effect for mid-stream metadata changes in e.g. OGG (untested). This is still somewhat fishy, but in parts due to ICY being fishy, and FFmpeg's metadata change API being somewhat fishy. For example, what happens if you seek? With FFmpeg AVFMT_EVENT_FLAG_METADATA_UPDATED and AVSTREAM_EVENT_FLAG_METADATA_UPDATED we hope that FFmpeg will correctly restore the correct metadata when the first packet is returned. If you seke with ICY, we're out of luck, and some audio will be associated with the wrong tag until we get a new title through ICY metadata update at an essentially random point (it's mostly inherent to ICY). Then the tags will switch back and forth, and this behavior will stick with the data stored in the demuxer cache. Fortunately, this can happen only if the HTTP stream is actually seekable, which it usually is not for ICY things. Seeking doesn't even make sense with ICY, since you can't know the exact metadata location. Basically ICY metsdata sucks. Some complexity is due to a microoptimization: I didn't want additional atomic accesses for each packet if no timed metadata is used. (It probably doesn't matter at all.)
* tags: add mp_tags_removeKevin Mitchell2017-12-261-0/+19
| | | | | This removes all tags matching the provided key. This will be used for removing metadata tags during encoding.
* Relicense some non-MPlayer source files to LGPL 2.1 or laterwm42016-01-191-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This covers source files which were added in mplayer2 and mpv times only, and where all code is covered by LGPL relicensing agreements. There are probably more files to which this applies, but I'm being conservative here. A file named ao_sdl.c exists in MPlayer too, but the mpv one is a complete rewrite, and was added some time after the original ao_sdl.c was removed. The same applies to vo_sdl.c, for which the SDL2 API is radically different in addition (MPlayer supports SDL 1.2 only). common.c contains only code written by me. But common.h is a strange case: although it originally was named mp_common.h and exists in MPlayer too, by now it contains only definitions written by uau and me. The exceptions are the CONTROL_ defines - thus not changing the license of common.h yet. codec_tags.c contained once large tables generated from MPlayer's codecs.conf, but all of these tables were removed. From demux_playlist.c I'm removing a code fragment from someone who was not asked; this probably could be done later (see commit 15dccc37). misc.c is a bit complicated to reason about (it was split off mplayer.c and thus contains random functions out of this file), but actually all functions have been added post-MPlayer. Except get_relative_time(), which was written by uau, but looks similar to 3 different versions of something similar in each of the Unix/win32/OSX timer source files. I'm not sure what that means in regards to copyright, so I've just moved it into another still-GPL source file for now. screenshot.c once had some minor parts of MPlayer's vf_screenshot.c, but they're all gone.
* player: don't set tag strings to NULLwm42015-01-121-3/+3
| | | | | | | | | | | | | bstr is a bounded string type, consisting of a pointer and a length value. If the length is 0, the pointer can be NULL. This is somewhat logical due to how this abstraction works, but it can leak when converting to C strings. talloc_strndup() returns NULL instead of "" in this case, which broke some other code. Use bstrto0() instead, which is the "proper" function to convert bstr to char*. Fixes #1462.
* player: change --display-tags behaviorwm42015-01-121-7/+16
| | | | | | | | | | | | | | | | | | Remove the "all" special-behavior, and instead interpret trailing "*" characters. --display-tags=all is replaced by --display-tags=* as a special-case of the new behavior. See #1404. Note that the most straight-forward value for matchlen in the normal case would be INT_MAX, because it should be using the entire string. I used keylen+1 instead, because glibc seems to handle this case incorrectly: snprintf(buf, sizeof(buf), "%.*s", INT_MAX, "hello"); The result is empty, instead of just containing the string argument. This might be a glibc bug; it works with other libcs (even MinGW-w64).
* player: filter tags, add --display-tags optionwm42014-12-291-0/+19
| | | | | | | | This attempts to increase user-friendliness by excluding useless tags. It should be especially helpful with mp4 files, because the FFmpeg mp4 demuxer adds tons of completely useless information to the metadata. Fixes #1403.
* Move compat/ and bstr/ directory contents somewhere elsewm42014-08-291-1/+1
| | | | | | | | | bstr.c doesn't really deserve its own directory, and compat had just a few files, most of which may as well be in osdep. There isn't really any justification for these extra directories, so get rid of them. The compat/libav.h was empty - just delete it. We changed our approach to API compatibility, and will likely not need it anymore.
* tags: add copy functionwm42014-07-161-0/+13
* demux, stream: change metadata notificationwm42014-07-051-0/+6
| | | | | | | | | | | | (Again.) This time, we simply make it event-based, as it should be. This is done for both demuxer metadata and stream metadata. For some ogg-over-icy streams, 2 updates are reported on stream start. This is because libavformat reports an update right on start, while including the same info in the "static" metadata. I don't know if that's a bug or a feature.
* mp_tags: move generic mp_tags stuff into its own .c/.h files in common/Kevin Mitchell2014-04-131-0/+70
rename add_metadata to the more genera/descriptive mp_tags_copy_items_from_av_dictionary Signed-off-by: wm4 <wm4@nowhere>