cycon.h

   1 /*
   2  * Copyright (c) 2019, De Rais <derais@cock.li>
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for
   5  * any purpose with or without fee is hereby granted, provided that the
   6  * above copyright notice and this permission notice appear in all
   7  * copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
  10  * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
  11  * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
  12  * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
  13  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
  14  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  15  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  16  * PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 /* FWdecl */
  20 struct lws_client_connect_info;
  21 struct TermKey;
  22 struct unibi_term;
  23
  24 /* A thing that we can play */
  25 struct playlist_entry {
  26         /* */
  27         char *title;     /* What to show in the list */
  28         int title_width; /* How many cells the title takes to print */
  29         char *uri;       /* How to get the bits */
  30         char *runtime;   /* How long we have to sit through this */
  31         int uid;         /* For being deleted, skipped to, queued after */
  32 };
  33
  34 /* A list of playlist entries */
  35 struct playlist {
  36         /* */
  37         struct playlist_entry *entries;
  38         size_t entries_len;
  39         int current_playing_uid;
  40         int paused;
  41         int current_playtime;
  42         int current_length;
  43         int zero_clocktime;
  44         int zero_playtime;
  45 };
  46
  47 /* A thing said by a person */
  48 struct chat_msg {
  49         /* */
  50         char *user;  /* Who said it */
  51         char *text;  /* What they said */
  52         int special; /* Whether this is really an announcement/poll/something */
  53 };
  54
  55 /* Things said by people */
  56 struct chat_log {
  57         /* */
  58         struct chat_msg *msgs;
  59         size_t msgs_len;
  60 };
  61
  62 /* User data passed to callbacks: all state */
  63
  64 /*
  65    Note that there is NO locking, because I don't care quite enough
  66    to put it in, much less get it correct.
  67  */
  68 struct state {
  69         /* An error message the server may have sent */
  70         char *server_error;
  71
  72         /* connection info; const are from argv and should not be free()d */
  73         const char *address;
  74         const char *channel_name;
  75         int https;
  76         char *socket_host;         /* oh joy, there are multiple servers to talk to */
  77         /* Fucking layers on top of layers on top of insanity */
  78         char *stored_cmd;
  79         size_t stored_cmd_len;
  80
  81         /* middleware stuff */
  82         char *sid;                        /* From socket.io's initialization */
  83         time_t ping_interval;             /* Ping this often */
  84         time_t last_ping;                 /* When we ping'd last */
  85         time_t last_playlist_req;         /* When we last requested playlist */
  86         int established;                  /* Have we seen LWS_CALLBACK_CLIENT_ESTABLISHED? */
  87         /* application state - domain of state.c */
  88         struct playlist playlist;         /* What the server tells us is queued */
  89         struct chat_log chat_log;         /* What the clowns have said */
  90         int please_die;                   /* Should we shut down */
  91         int must_write_ping;              /* Determining what to write */
  92         int must_write_upgrade;           /* ^ */
  93         int must_join_channel;            /* ^ */
  94         int must_ask_for_playlist;        /* ^ */
  95         /* UI state - domain of ui.c */
  96         struct TermKey *tk;               /* How to get a key pressed */
  97         struct unibi_term *ut;            /* How to talk to unibilium about terminfo */
  98         int term_width;                   /* Width of controlling term, in cells */
  99         int term_height;                  /* Height of controlling term, in cells */
 100         int *dirty_line;                  /* What we need to touch on next redraw */
 101         int dirty_top;                    /* Whether we should redraw [all of] top */
 102         int dirty_playlist;               /* Whether we should redraw [all of] bottom */
 103         size_t playlist_offset;           /* Index of first playlist entry displayed */
 104         size_t playlist_hover_idx;        /* What entry in the playlist we're hovering over */
 105         size_t pos_mid_line;              /* The y-position of the middle line */
 106         size_t pos_hints_top;             /* The y-position of the first UI hint line */
 107         int uri_or_chat;                  /* 0: show chat, and 1: show URIs */
 108 };
 109
 110 /*
 111  * cytube.c (libwebsockets, site-specific stuff)
 112  */
 113
 114 /* Extract the ip-session cookie that sync demands */
 115 int cytube_get_session_cookie(const char *server, const char *protocol, const
 116                               char *channel, struct state volatile *s);
 117
 118 /* Pass setup connection info (do this first) */
 119 void cytube_set_cci_and_s(struct lws_client_connect_info *cci, struct state
 120                           volatile *sp);
 121
 122 /*
 123  * launch.c (mpv/youtube-dl spawning)
 124  */
 125 void launch_downloader(const char *uri);
 126
 127 void launch_player(const char *uri);
 128
 129 /*
 130  * state.c (also includes some cytube-specific handling of emitted events)
 131  */
 132 void state_clean(struct state volatile *s);
 133 int state_handle(struct state volatile *s, const char *msg, size_t len);
 134
 135 /*
 136  * ui.c
 137  */
 138 int ui_init(struct state volatile *s);
 139 void ui_loop(struct state volatile *s);
 140
 141 /*
 142  * util.c
 143  */
 144
 145 /* snprintf + malloc + sprintf */
 146 char * aprintf(const char *format, ...);
 147
 148 /* strlen, but with wcwidth in the middle */
 149 int strwidth(const char *s);