1 /* ncmpc (Ncurses MPD Client)
2 * (c) 2004-2010 The Music Player Daemon Project
3 * Project homepage: http://musicpd.org
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
20 #include "screen_song.h"
21 #include "screen_interface.h"
22 #include "screen_file.h"
23 #include "screen_lyrics.h"
24 #include "screen_find.h"
25 #include "i18n.h"
26 #include "screen.h"
27 #include "charset.h"
28 #include "utils.h"
29 #include "mpdclient.h"
31 #include <mpd/client.h>
33 #include <glib/gprintf.h>
34 #include <assert.h>
35 #include <string.h>
37 enum {
38 LABEL_LENGTH = MPD_TAG_COUNT,
39 LABEL_PATH,
40 LABEL_BITRATE,
41 };
43 static const char *const tag_labels[] = {
44 [MPD_TAG_ARTIST] = N_("Artist"),
45 [MPD_TAG_TITLE] = N_("Title"),
46 [MPD_TAG_ALBUM] = N_("Album"),
47 [LABEL_LENGTH] = N_("Length"),
48 [MPD_TAG_COMPOSER] = N_("Composer"),
49 [MPD_TAG_NAME] = N_("Name"),
50 [MPD_TAG_DISC] = N_("Disc"),
51 [MPD_TAG_TRACK] = N_("Track"),
52 [MPD_TAG_DATE] = N_("Date"),
53 [MPD_TAG_GENRE] = N_("Genre"),
54 [MPD_TAG_COMMENT] = N_("Comment"),
55 [LABEL_PATH] = N_("Path"),
56 [LABEL_BITRATE] = N_("Bitrate"),
57 };
59 static unsigned max_tag_label_width;
61 enum stats_label {
62 STATS_ARTISTS,
63 STATS_ALBUMS,
64 STATS_SONGS,
65 STATS_UPTIME,
66 STATS_DBUPTIME,
67 STATS_PLAYTIME,
68 STATS_DBPLAYTIME,
69 };
71 static const char *const stats_labels[] = {
72 [STATS_ARTISTS] = N_("Number of artists"),
73 [STATS_ALBUMS] = N_("Number of albums"),
74 [STATS_SONGS] = N_("Number of songs"),
75 [STATS_UPTIME] = N_("Uptime"),
76 [STATS_DBUPTIME] = N_("Most recent db update"),
77 [STATS_PLAYTIME] = N_("Playtime"),
78 [STATS_DBPLAYTIME] = N_("DB playtime"),
79 };
81 static unsigned max_stats_label_width;
83 static struct list_window *lw;
85 static struct mpd_song *next_song;
87 static struct {
88 struct mpd_song *selected_song;
89 struct mpd_song *played_song;
90 GPtrArray *lines;
91 } current;
93 static void
94 screen_song_clear(void)
95 {
96 for (guint i = 0; i < current.lines->len; ++i)
97 g_free(g_ptr_array_index(current.lines, i));
99 g_ptr_array_set_size(current.lines, 0);
101 if (current.selected_song != NULL) {
102 mpd_song_free(current.selected_song);
103 current.selected_song = NULL;
104 }
105 if (current.played_song != NULL) {
106 mpd_song_free(current.played_song);
107 current.played_song = NULL;
108 }
109 }
111 static void
112 screen_song_paint(void);
114 /**
115 * Repaint and update the screen.
116 */
117 static void
118 screen_song_repaint(void)
119 {
120 screen_song_paint();
121 wrefresh(lw->w);
122 }
124 static const char *
125 screen_song_list_callback(unsigned idx, G_GNUC_UNUSED void *data)
126 {
127 assert(idx < current.lines->len);
129 return g_ptr_array_index(current.lines, idx);
130 }
133 static void
134 screen_song_init(WINDOW *w, int cols, int rows)
135 {
136 for (unsigned i = 0; i < G_N_ELEMENTS(tag_labels); ++i) {
137 if (tag_labels[i] != NULL) {
138 unsigned width = utf8_width(_(tag_labels[i]));
140 if (width > max_tag_label_width)
141 max_tag_label_width = width;
142 }
143 }
145 for (unsigned i = 0; i < G_N_ELEMENTS(stats_labels); ++i) {
146 if (stats_labels[i] != NULL) {
147 unsigned width = utf8_width(_(stats_labels[i]));
149 if (width > max_stats_label_width)
150 max_stats_label_width = width;
151 }
152 }
154 /* We will need at least 10 lines, so this saves 10 reallocations :) */
155 current.lines = g_ptr_array_sized_new(10);
156 lw = list_window_init(w, cols, rows);
157 lw->hide_cursor = true;
158 }
160 static void
161 screen_song_exit(void)
162 {
163 list_window_free(lw);
165 screen_song_clear();
167 g_ptr_array_free(current.lines, TRUE);
168 current.lines = NULL;
169 }
171 static void
172 screen_song_resize(int cols, int rows)
173 {
174 list_window_resize(lw, cols, rows);
175 }
177 static const char *
178 screen_song_title(G_GNUC_UNUSED char *str, G_GNUC_UNUSED size_t size)
179 {
180 return _("Song viewer");
181 }
183 static void
184 screen_song_paint(void)
185 {
186 list_window_paint(lw, screen_song_list_callback, NULL);
187 }
189 /* Appends a line with a fixed width for the label column
190 * Handles NULL strings gracefully */
191 static void
192 screen_song_append(const char *label, const char *value, unsigned label_col)
193 {
194 unsigned label_width = locale_width(label) + 2;
195 int value_col, label_size;
196 gchar *entry, *entry_iter;
197 const gchar *value_iter;
198 char *p, *q;
199 unsigned width;
201 assert(label != NULL);
202 assert(value != NULL);
203 assert(g_utf8_validate(value, -1, NULL));
205 /* +2 for ': ' */
206 label_col += 2;
207 value_col = lw->cols - label_col;
208 /* calculate the number of required linebreaks */
209 value_iter = value;
210 label_size = strlen(label) + label_col;
212 while (*value_iter != 0) {
213 entry = g_malloc(label_size);
214 if (value_iter == value) {
215 entry_iter = entry + g_sprintf(entry, "%s: ", label);
216 /* fill the label column with whitespaces */
217 memset(entry_iter, ' ', label_col - label_width);
218 entry_iter += label_col - label_width;
219 }
220 else {
221 /* fill the label column with whitespaces */
222 memset(entry, ' ', label_col);
223 entry_iter = entry + label_col;
224 }
225 /* skip whitespaces */
226 while (g_ascii_isspace(*value_iter)) ++value_iter;
228 p = g_strdup(value_iter);
229 width = utf8_cut_width(p, value_col);
230 if (width == 0)
231 /* not enough room for anything - bail out */
232 break;
234 *entry_iter = 0;
236 value_iter += strlen(p);
237 p = replace_utf8_to_locale(p);
238 q = g_strconcat(entry, p, NULL);
239 g_free(entry);
240 g_free(p);
242 g_ptr_array_add(current.lines, q);
243 }
244 }
246 static void
247 screen_song_append_tag(const struct mpd_song *song, enum mpd_tag_type tag)
248 {
249 const char *label = _(tag_labels[tag]);
250 unsigned i = 0;
251 const char *value;
253 assert((unsigned)tag < G_N_ELEMENTS(tag_labels));
254 assert(label != NULL);
256 while ((value = mpd_song_get_tag(song, tag, i++)) != NULL)
257 screen_song_append(label, value, max_tag_label_width);
258 }
260 static void
261 screen_song_add_song(const struct mpd_song *song, const struct mpdclient *c)
262 {
263 assert(song != NULL);
265 screen_song_append_tag(song, MPD_TAG_ARTIST);
266 screen_song_append_tag(song, MPD_TAG_TITLE);
267 screen_song_append_tag(song, MPD_TAG_ALBUM);
269 /* create time string and add it */
270 if (mpd_song_get_duration(song) > 0) {
271 char length[16];
272 format_duration_short(length, sizeof(length),
273 mpd_song_get_duration(song));
275 const char *value = length;
277 #if LIBMPDCLIENT_CHECK_VERSION(2,3,0)
278 char buffer[64];
280 if (mpd_song_get_end(song) > 0) {
281 char start[16], end[16];
282 format_duration_short(start, sizeof(start),
283 mpd_song_get_start(song));
284 format_duration_short(end, sizeof(end),
285 mpd_song_get_end(song));
287 snprintf(buffer, sizeof(buffer), "%s [%s-%s]\n",
288 length, start, end);
289 value = buffer;
290 } else if (mpd_song_get_start(song) > 0) {
291 char start[16];
292 format_duration_short(start, sizeof(start),
293 mpd_song_get_start(song));
295 snprintf(buffer, sizeof(buffer), "%s [%s-]\n",
296 length, start);
297 value = buffer;
298 }
299 #endif
301 screen_song_append(_(tag_labels[LABEL_LENGTH]), value,
302 max_tag_label_width);
303 }
305 screen_song_append_tag(song, MPD_TAG_COMPOSER);
306 screen_song_append_tag(song, MPD_TAG_NAME);
307 screen_song_append_tag(song, MPD_TAG_DISC);
308 screen_song_append_tag(song, MPD_TAG_TRACK);
309 screen_song_append_tag(song, MPD_TAG_DATE);
310 screen_song_append_tag(song, MPD_TAG_GENRE);
311 screen_song_append_tag(song, MPD_TAG_COMMENT);
313 screen_song_append(_(tag_labels[LABEL_PATH]), mpd_song_get_uri(song),
314 max_tag_label_width);
315 if (mpdclient_is_playing(c) && c->song != NULL &&
316 strcmp(mpd_song_get_uri(c->song), mpd_song_get_uri(song)) == 0 &&
317 mpd_status_get_kbit_rate(c->status)) {
318 char buf[16];
319 g_snprintf(buf, sizeof(buf), _("%d kbps"),
320 mpd_status_get_kbit_rate(c->status));
321 screen_song_append(_(tag_labels[LABEL_BITRATE]), buf,
322 max_tag_label_width);
323 }
324 }
326 static void
327 screen_song_append_stats(enum stats_label label, const char *value)
328 {
329 screen_song_append(_(stats_labels[label]), value,
330 max_stats_label_width);
331 }
333 static bool
334 screen_song_add_stats(struct mpd_connection *connection)
335 {
336 char buf[64];
337 GDate *date;
338 struct mpd_stats *mpd_stats;
340 mpd_stats = mpd_run_stats(connection);
341 if (mpd_stats == NULL)
342 return false;
344 g_ptr_array_add(current.lines, g_strdup(_("MPD statistics")) );
345 g_snprintf(buf, sizeof(buf), "%d",
346 mpd_stats_get_number_of_artists(mpd_stats));
347 screen_song_append_stats(STATS_ARTISTS, buf);
348 g_snprintf(buf, sizeof(buf), "%d",
349 mpd_stats_get_number_of_albums(mpd_stats));
350 screen_song_append_stats(STATS_ALBUMS, buf);
351 g_snprintf(buf, sizeof(buf), "%d",
352 mpd_stats_get_number_of_songs(mpd_stats));
353 screen_song_append_stats(STATS_SONGS, buf);
355 format_duration_long(buf, sizeof(buf),
356 mpd_stats_get_db_play_time(mpd_stats));
357 screen_song_append_stats(STATS_DBPLAYTIME, buf);
359 format_duration_long(buf, sizeof(buf),
360 mpd_stats_get_play_time(mpd_stats));
361 screen_song_append_stats(STATS_PLAYTIME, buf);
363 format_duration_long(buf, sizeof(buf),
364 mpd_stats_get_uptime(mpd_stats));
365 screen_song_append_stats(STATS_UPTIME, buf);
367 date = g_date_new();
368 g_date_set_time_t(date, mpd_stats_get_db_update_time(mpd_stats));
369 g_date_strftime(buf, sizeof(buf), "%x", date);
370 screen_song_append_stats(STATS_DBUPTIME, buf);
371 g_date_free(date);
373 mpd_stats_free(mpd_stats);
374 return true;
375 }
377 static void
378 screen_song_update(struct mpdclient *c)
379 {
380 struct mpd_connection *connection;
382 /* Clear all lines */
383 for (guint i = 0; i < current.lines->len; ++i)
384 g_free(g_ptr_array_index(current.lines, i));
385 g_ptr_array_set_size(current.lines, 0);
387 /* If a song was selected before the song screen was opened */
388 if (next_song != NULL) {
389 assert(current.selected_song == NULL);
390 current.selected_song = next_song;
391 next_song = NULL;
392 }
394 if (current.selected_song != NULL &&
395 (c->song == NULL ||
396 strcmp(mpd_song_get_uri(current.selected_song),
397 mpd_song_get_uri(c->song)) != 0 ||
398 !mpdclient_is_playing(c))) {
399 g_ptr_array_add(current.lines, g_strdup(_("Selected song")) );
400 screen_song_add_song(current.selected_song, c);
401 g_ptr_array_add(current.lines, g_strdup("\0"));
402 }
404 if (c->song != NULL && mpdclient_is_playing(c)) {
405 if (current.played_song != NULL) {
406 mpd_song_free(current.played_song);
407 }
408 current.played_song = mpd_song_dup(c->song);
409 g_ptr_array_add(current.lines, g_strdup(_("Currently playing song")));
410 screen_song_add_song(current.played_song, c);
411 g_ptr_array_add(current.lines, g_strdup("\0"));
412 }
414 /* Add some statistics about mpd */
415 connection = mpdclient_get_connection(c);
416 if (connection != NULL && !screen_song_add_stats(connection))
417 mpdclient_handle_error(c);
419 list_window_set_length(lw, current.lines->len);
420 screen_song_repaint();
421 }
423 static bool
424 screen_song_cmd(struct mpdclient *c, command_t cmd)
425 {
426 if (list_window_scroll_cmd(lw, cmd)) {
427 screen_song_repaint();
428 return true;
429 }
431 switch(cmd) {
432 case CMD_LOCATE:
433 if (current.selected_song != NULL) {
434 screen_file_goto_song(c, current.selected_song);
435 return true;
436 }
437 if (current.played_song != NULL) {
438 screen_file_goto_song(c, current.played_song);
439 return true;
440 }
442 return false;
444 #ifdef ENABLE_LYRICS_SCREEN
445 case CMD_SCREEN_LYRICS:
446 if (current.selected_song != NULL) {
447 screen_lyrics_switch(c, current.selected_song, false);
448 return true;
449 }
450 if (current.played_song != NULL) {
451 screen_lyrics_switch(c, current.played_song, true);
452 return true;
453 }
454 return false;
456 #endif
458 case CMD_SCREEN_SWAP:
459 if (current.selected_song != NULL)
460 screen_swap(c, current.selected_song);
461 else
462 // No need to check if this is null - we'd pass null anyway
463 screen_swap(c, current.played_song);
464 return true;
466 default:
467 break;
468 }
470 if (screen_find(lw, cmd, screen_song_list_callback, NULL)) {
471 /* center the row */
472 list_window_center(lw, lw->selected);
473 screen_song_repaint();
474 return true;
475 }
477 return false;
478 }
480 const struct screen_functions screen_song = {
481 .init = screen_song_init,
482 .exit = screen_song_exit,
483 .open = screen_song_update,
484 .close = screen_song_clear,
485 .resize = screen_song_resize,
486 .paint = screen_song_paint,
487 .update = screen_song_update,
488 .cmd = screen_song_cmd,
489 .get_title = screen_song_title,
490 };
492 void
493 screen_song_switch(struct mpdclient *c, const struct mpd_song *song)
494 {
495 assert(song != NULL);
496 assert(current.selected_song == NULL);
497 assert(current.played_song == NULL);
499 next_song = mpd_song_dup(song);
500 screen_switch(&screen_song, c);
501 }