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https://github.com/mpv-player/mpv
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733bdebcb9
Internally, there are two mechanisms which can trigger property notification as used with "observed" properties in the client API. The first mechanism associates events with a group of properties that are potentially changed by a certain event. mp_event_property_change[] declares these associations, and maps each event to a set of strings. When an event happens, the set of strings is matched against the list of observed properties of each client. Make this more efficient by comparing bitsets of events instead. This way, only a bit-wise "and" is needed for each observed property. Even better, we can completely skip clients which have no observed properties that match. The second mechanism just updates individual properties explicitly by name. Optimize this by using the property index instead. It would be nice if we could reuse the first mechanism for the second one, but there are too many properties to fit into a 64 bit mask. (Though the limit on 64 events might get us into trouble later...)
47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPLAYER_COMMAND_H
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#define MPLAYER_COMMAND_H
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struct MPContext;
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struct mp_cmd;
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struct mp_log;
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void command_init(struct MPContext *mpctx);
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void command_uninit(struct MPContext *mpctx);
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int run_command(struct MPContext *mpctx, struct mp_cmd *cmd);
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char *mp_property_expand_string(struct MPContext *mpctx, const char *str);
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char *mp_property_expand_escaped_string(struct MPContext *mpctx, const char *str);
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void property_print_help(struct mp_log *log);
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int mp_property_do(const char* name, int action, void* val,
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struct MPContext *mpctx);
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void mp_notify(struct MPContext *mpctx, int event, void *arg);
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void mp_notify_property(struct MPContext *mpctx, const char *property);
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int mp_get_property_id(const char *name);
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uint64_t mp_get_property_event_mask(const char *name);
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// Must start with the first unused positive value in enum mpv_event_id
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#define INTERNAL_EVENT_BASE 24
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#define MP_EVENT_CACHE_UPDATE (INTERNAL_EVENT_BASE + 0)
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#endif /* MPLAYER_COMMAND_H */
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