paswitch: avoid information duplication
And miscellaneous cleanup.
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LICENSE
2
LICENSE
@ -1,4 +1,4 @@
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Copyright (c) 2015 - 2016, Přemysl Janouch <p@janouch.name>
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Copyright (c) 2015 - 2018, Přemysl Janouch <p@janouch.name>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted.
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@ -8,6 +8,8 @@ to other people as well:
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- 'wmstatus' does literally everything my i3 doesn't but I'd like it to. It
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includes PulseAudio volume management and hand-written NUT and MPD clients,
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all in the name of liberation from GPL-licensed software of course
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- 'paswitch' displays a list of all PulseAudio sinks and ports and allows
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switching between them, moving all playing inputs
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- 'brightness' allows me to change the brightness of w/e display device I have
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- 'input-switch' likewise switches the input source of external displays
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- 'fancontrol-ng' is a clone of fancontrol that can handle errors on resume
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107
paswitch.c
107
paswitch.c
@ -154,6 +154,9 @@ struct app_context
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pa_context *context; ///< PulseAudio connection context
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bool failed; ///< General PulseAudio failure
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bool reset_sinks; ///< Flag for info callback
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bool reset_inputs; ///< Flag for info callback
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char *default_sink; ///< Name of the default sink
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struct sink *sinks; ///< PulseAudio sinks
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struct sink *sinks_tail; ///< Tail of PulseAudio sinks
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@ -234,7 +237,13 @@ make_inputs_status (struct app_context *ctx, struct sink *sink)
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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#define DEFAULT_SINK "@DEFAULT_SINK@"
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static void
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forget_sinks (struct app_context *ctx)
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{
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LIST_FOR_EACH (struct sink, iter, ctx->sinks)
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sink_destroy (iter);
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ctx->sinks = ctx->sinks_tail = NULL;
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}
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static void
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on_sink_info (pa_context *context, const pa_sink_info *info, int eol,
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@ -242,6 +251,13 @@ on_sink_info (pa_context *context, const pa_sink_info *info, int eol,
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{
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(void) context;
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struct app_context *ctx = userdata;
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// Assuming replies cannot overlap
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if (ctx->reset_sinks)
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{
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forget_sinks (ctx);
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ctx->reset_sinks = false;
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}
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if (!info || eol)
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{
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// TODO: handle the case of when sinks disappear
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@ -249,6 +265,7 @@ on_sink_info (pa_context *context, const pa_sink_info *info, int eol,
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ctx->selected_sink = ctx->sinks->index;
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poller_idle_set (&ctx->redraw_event);
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ctx->reset_sinks = true;
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return;
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}
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@ -280,44 +297,13 @@ on_sink_info (pa_context *context, const pa_sink_info *info, int eol,
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LIST_APPEND_WITH_TAIL (ctx->sinks, ctx->sinks_tail, sink);
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}
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static void
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forget_sinks (struct app_context *ctx)
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{
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LIST_FOR_EACH (struct sink, iter, ctx->sinks)
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sink_destroy (iter);
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ctx->sinks = ctx->sinks_tail = NULL;
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}
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static void
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update_sinks (struct app_context *ctx)
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{
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// It shouldn't matter much if we interrupt this operation in the middle
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// since we request new information right away. At least so long as
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// replies can't overlap. Though even then we're safe, at least.
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forget_sinks (ctx);
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pa_operation_unref (pa_context_get_sink_info_list
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(ctx->context, on_sink_info, ctx));
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}
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static void
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on_sink_input_info (pa_context *context, const struct pa_sink_input_info *info,
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int eol, void *userdata)
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{
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(void) context;
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struct app_context *ctx = userdata;
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if (!info || eol)
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{
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poller_idle_set (&ctx->redraw_event);
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return;
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}
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struct sink_input *input = sink_input_new ();
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input->sink = info->sink;
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input->index = info->index;
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LIST_APPEND_WITH_TAIL (ctx->inputs, ctx->inputs_tail, input);
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}
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static void
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forget_sink_inputs (struct app_context *ctx)
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{
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@ -326,14 +312,35 @@ forget_sink_inputs (struct app_context *ctx)
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ctx->inputs = ctx->inputs_tail = NULL;
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}
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static void
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on_sink_input_info (pa_context *context, const struct pa_sink_input_info *info,
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int eol, void *userdata)
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{
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(void) context;
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struct app_context *ctx = userdata;
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// Assuming replies cannot overlap
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if (ctx->reset_inputs)
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{
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forget_sink_inputs (ctx);
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ctx->reset_inputs = false;
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}
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if (!info || eol)
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{
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poller_idle_set (&ctx->redraw_event);
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ctx->reset_inputs = true;
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return;
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}
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struct sink_input *input = sink_input_new ();
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input->sink = info->sink;
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input->index = info->index;
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LIST_APPEND_WITH_TAIL (ctx->inputs, ctx->inputs_tail, input);
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}
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static void
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update_sink_inputs (struct app_context *ctx)
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{
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// It shouldn't matter much if we interrupt this operation in the middle
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// since we request new information right away. At least so long as
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// replies can't overlap. Though even then we're safe, at least.
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forget_sink_inputs (ctx);
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pa_operation_unref (pa_context_get_sink_input_info_list
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(ctx->context, on_sink_input_info, ctx));
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}
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@ -351,6 +358,13 @@ on_server_info (pa_context *context, const struct pa_server_info *info,
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cstr_set (&ctx->default_sink, NULL);
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}
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static void
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update_server_info (struct app_context *ctx)
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{
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pa_operation_unref (pa_context_get_server_info (ctx->context,
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on_server_info, ctx));
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}
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static void
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on_event (pa_context *context, pa_subscription_event_type_t event,
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uint32_t index, void *userdata)
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@ -368,8 +382,7 @@ on_event (pa_context *context, pa_subscription_event_type_t event,
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update_sink_inputs (ctx);
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break;
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case PA_SUBSCRIPTION_EVENT_SERVER:
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pa_operation_unref (pa_context_get_server_info (context,
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on_server_info, userdata));
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update_server_info (ctx);
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}
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}
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@ -401,11 +414,13 @@ on_context_state_change (pa_context *context, void *userdata)
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ctx->context = NULL;
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forget_sinks (ctx);
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forget_sink_inputs (ctx);
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cstr_set (&ctx->default_sink, NULL);
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// Retry after an arbitrary delay of 5 seconds
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poller_timer_set (&ctx->make_context, 5000);
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return;
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case PA_CONTEXT_READY:
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ctx->failed = false;
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poller_idle_set (&ctx->redraw_event);
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@ -415,11 +430,12 @@ on_context_state_change (pa_context *context, void *userdata)
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PA_SUBSCRIPTION_MASK_SINK | PA_SUBSCRIPTION_MASK_SINK_INPUT |
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PA_SUBSCRIPTION_MASK_SERVER, on_subscribe_finish, userdata));
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ctx->reset_sinks = true;
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ctx->reset_inputs = true;
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update_sinks (ctx);
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update_sink_inputs (ctx);
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pa_operation_unref (pa_context_get_server_info (context,
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on_server_info, userdata));
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update_server_info (ctx);
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default:
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return;
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}
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@ -520,7 +536,8 @@ on_redraw (struct app_context *ctx)
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printf ("\x1b[H"); // Cursor to home
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printf ("\x1b[2J"); // Clear the whole screen
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// TODO: see if we can reduce flickering. Buffering doesn't help much.
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// TODO: see if we can reduce flickering in rxvt-unicode.
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// Buffering doesn't help, we have to do something more sophisticated.
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// TODO: try not to write more lines than g_terminal_lines for starters
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if (ctx->failed)
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{
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@ -682,7 +699,11 @@ g_key_handlers[] =
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{ "k", ACTION_UP },
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{ "j", ACTION_DOWN },
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{ "\x10", ACTION_UP },
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{ "\x0e", ACTION_DOWN },
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{ "\r", ACTION_SELECT },
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{ "+", ACTION_VOLUP },
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{ "-", ACTION_VOLDOWN },
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{ "\x1b[5~", ACTION_VOLUP },
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{ "\x1b[6~", ACTION_VOLDOWN },
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{ "m", ACTION_MUTE },
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