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49d1b42f70
This turned out ridiculously complex. I think it will have to be simplified some day. Main reason for the complexity are: - filtering properties by forcing clients to observe individual properties explicitly (to avoid spamming clients with changes they don't want) - optional retrieval of property value with the notification (the basic idea was that this is more user friendly) - allowing to the client to specify a format in which the value should be retrieved (because if a property changes its type, the client API couldn't convert it properly, and compatibility would break) I don't know yet which of these are important, and everything could change. In particular, the interface and semantics should be adjusted to reduce the implementation complexity. While I consider the API complete, there could (and probably will) be bugs left. Also while the implementation is complete, it's inefficient. The complexity of the property matching is O(a*b*c) with a clients, b observed properties, and c properties changing at once. I threw away an earlier implementation using bitmasks, because it was too unwieldy.
43 lines
1.5 KiB
C
43 lines
1.5 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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void 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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const struct m_option *mp_get_property_list(void);
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int mp_find_property_index(const char *property);
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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, char *property);
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#endif /* MPLAYER_COMMAND_H */
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