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/*
* pa-sink-ctl - NCurses based Pulseaudio control client
* Copyright (C) 2011 Benjamin Franzke <benjaminfranzke@googlemail.com>
* Copyright (C) 2010 Jan Klemkow <web2p10@wemelug.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <unistd.h>
#include <string.h>
#include <stdarg.h>
#include <sys/ioctl.h>
#include <glib.h>
#include <pulse/pulseaudio.h>
#include <ncurses.h>
#include "interface.h"
#include "sink.h"
#include "command.h"
#include "pa-sink-ctl.h"
#ifdef HAVE_SIGNALFD
#include <sys/signalfd.h>
#include <signal.h>
#else
#include "unix_signal.h"
#endif
static gboolean
interface_resize(gpointer data)
{
struct context *ctx = data;
struct winsize wsize;
gint height = 80;
gint width = 24;
if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &wsize) >= 0) {
height = wsize.ws_row;
width = wsize.ws_col;
}
resize_term(height, width);
clear();
refresh();
wresize(ctx->menu_win, height - H_MSG_BOX, width);
wresize(ctx->msg_win, H_MSG_BOX, width);
mvwin(ctx->msg_win, height - H_MSG_BOX, 0);
/* NULL := display old status */
interface_set_status(ctx, NULL);
interface_redraw(ctx);
return TRUE;
}
static void
print_volume(struct context *ctx, pa_volume_t volume, int mute, int y)
{
gint x = 2 /* left */ + 2 /* index num width */ + 1 /* space */ +
1 /* space */ + ctx->max_name_len + 1 /* space */;
/* mute button + brackets + space */
int volume_bar_len = getmaxx(ctx->menu_win) - x - 6;
gint vol = (gint) (volume_bar_len * volume / PA_VOLUME_NORM);
mvwprintw(ctx->menu_win, y, x - 1, "[%c]", mute ? 'M' : ' ');
x += 3;
mvwprintw(ctx->menu_win, y, x - 1 , "[");
for (gint i = 0; i < vol; ++i)
mvwprintw(ctx->menu_win, y, x + i, "=");
for (gint i = vol; i < volume_bar_len; ++i)
mvwprintw(ctx->menu_win, y, x + i, " ");
mvwprintw(ctx->menu_win, y, x + volume_bar_len, "]");
}
static void
print_input_list(struct context *ctx, struct sink_info *sink,
gint sink_num, gint *poffset)
{
struct sink_input_info *input;
gint offset = *poffset;
gint i = -1;
list_foreach(ctx->input_list, input) {
if (input->sink != sink->index)
continue;
gboolean selected = (ctx->chooser_sink == sink_num &&
ctx->chooser_input == ++i);
if (selected)
wattron(ctx->menu_win, A_REVERSE);
mvwprintw(ctx->menu_win, offset, 2, "%*s%-*s",
2+1+1, "", /* space for index number + indentation*/
ctx->max_name_len - 1, input->name);
if (selected)
wattroff(ctx->menu_win, A_REVERSE);
print_volume(ctx, input->vol, input->mute, offset);
offset++;
}
*poffset = offset;
}
/* looking for the longest name length of all SINK's and INPUT's */
static void
set_max_name_len(struct context *ctx)
{
struct sink_info *sink;
struct sink_input_info *input;
guint len = 0;
ctx->max_name_len = len;
list_foreach(ctx->sink_list, sink) {
len = strlen(sink->name);
if (len > ctx->max_name_len)
ctx->max_name_len = len;
}
list_foreach(ctx->input_list, input) {
len = strlen(input->name) + 1 /* indentation */;
if (len > ctx->max_name_len)
ctx->max_name_len = len;
}
}
void
interface_redraw(struct context *ctx)
{
struct sink_info *sink;
gint i = -1;
gint x = 2;
gint offset = 2; /* top border + 1 empty line */
/* looking for the longest name for right indentation */
set_max_name_len(ctx);
werase(ctx->menu_win);
box(ctx->menu_win, 0, 0);
list_foreach(ctx->sink_list, sink) {
gboolean selected = (++i == ctx->chooser_sink &&
ctx->chooser_input == SELECTED_SINK);
if (selected)
wattron(ctx->menu_win, A_REVERSE);
mvwprintw(ctx->menu_win, offset, x, "%2u %-*s",
sink->index, ctx->max_name_len, sink->name);
if (selected)
wattroff(ctx->menu_win, A_REVERSE);
print_volume(ctx, sink->vol, sink->mute, offset);
offset++;
print_input_list(ctx, sink, i, &offset);
}
wrefresh(ctx->menu_win);
}
static gboolean
interface_get_input(GIOChannel *source, GIOCondition condition, gpointer data)
{
struct context *ctx = data;
struct command_cb_descriptor *cmd;
gint c;
c = wgetch(ctx->menu_win);
cmd = g_hash_table_lookup(ctx->config.keymap, GINT_TO_POINTER(c));
if (cmd)
cmd->cb(ctx, c);
return TRUE;
}
void
interface_clear(struct context *ctx)
{
g_source_remove(ctx->resize_source_id);
g_source_remove(ctx->input_source_id);
#ifdef HAVE_SIGNALFD
close(ctx->signal_fd);
#endif
clear();
refresh();
delwin(ctx->menu_win);
delwin(ctx->msg_win);
endwin();
delscreen(NULL);
if (ctx->status)
g_free(ctx->status);
}
void
interface_set_status(struct context *ctx, const gchar *msg, ...)
{
va_list ap;
if (msg != NULL) {
g_free(ctx->status);
va_start(ap, msg);
ctx->status = g_strdup_vprintf(msg, ap);
va_end(ap);
}
werase(ctx->msg_win);
box(ctx->msg_win, 0, 0);
if (ctx->status != NULL)
mvwprintw(ctx->msg_win, 1, 1, ctx->status);
wrefresh(ctx->msg_win);
refresh();
}
#ifdef HAVE_SIGNALFD
static gboolean
resize_gio(GIOChannel *source, GIOCondition condition, gpointer data)
{
struct context *ctx = data;
struct signalfd_siginfo fdsi;
ssize_t s;
g_assert(condition & G_IO_IN);
s = read(ctx->signal_fd, &fdsi, sizeof fdsi);
if (s != sizeof fdsi || fdsi.ssi_signo != SIGWINCH)
return FALSE;
return interface_resize(ctx);
}
#endif
int
interface_init(struct context *ctx)
{
GIOChannel *input_channel;
/* Selected sink-device. 0 is the first device */
ctx->chooser_sink = 0;
/* Selected input of the current sink-device. */
/* SELECTED_SINK refers to sink-device itself */
ctx->chooser_input = SELECTED_SINK;
initscr();
clear();
noecho();
/* Line buffering disabled. pass on everything */
cbreak();
/* hide cursor */
curs_set(0);
/* 0,0,0,0 := fullscreen */
ctx->menu_win = newwin(0, 0, 0, 0);
ctx->msg_win = newwin(0, 0, 0, 0);
/* multichar keys are mapped to one char */
keypad(ctx->menu_win, TRUE);
/* "resizing" here is for initial box positioning and layout */
interface_resize(ctx);
#ifdef HAVE_SIGNALFD
{
GIOChannel *channel;
sigset_t mask;
sigemptyset(&mask);
sigaddset(&mask, SIGWINCH);
if (sigprocmask(SIG_BLOCK, &mask, NULL) == -1)
return -1;
ctx->signal_fd = signalfd(-1, &mask, 0);
channel = g_io_channel_unix_new(ctx->signal_fd);
ctx->resize_source_id =
g_io_add_watch(channel, G_IO_IN, resize_gio, ctx);
g_io_channel_unref(channel);
}
#else
/* register event handler for resize and input */
ctx->resize_source_id = unix_signal_add(SIGWINCH,
interface_resize, ctx);
#endif
input_channel = g_io_channel_unix_new(STDIN_FILENO);
if (!input_channel)
return -1;
ctx->input_source_id = g_io_add_watch(input_channel, G_IO_IN,
interface_get_input, ctx);
g_io_channel_unref(input_channel);
refresh();
return 0;
}
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