1 /* ncmpc (Ncurses MPD Client)
2 * (c) 2004-2017 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 "time_format.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 LABEL_FORMAT,
42 LABEL_POSITION,
43 };
45 static const char *const tag_labels[] = {
46 [MPD_TAG_ARTIST] = N_("Artist"),
47 [MPD_TAG_TITLE] = N_("Title"),
48 [MPD_TAG_ALBUM] = N_("Album"),
49 [LABEL_LENGTH] = N_("Length"),
50 [LABEL_POSITION] = N_("Position"),
51 [MPD_TAG_COMPOSER] = N_("Composer"),
52 [MPD_TAG_NAME] = N_("Name"),
53 [MPD_TAG_DISC] = N_("Disc"),
54 [MPD_TAG_TRACK] = N_("Track"),
55 [MPD_TAG_DATE] = N_("Date"),
56 [MPD_TAG_GENRE] = N_("Genre"),
57 [MPD_TAG_COMMENT] = N_("Comment"),
58 [LABEL_PATH] = N_("Path"),
59 [LABEL_BITRATE] = N_("Bitrate"),
60 [LABEL_FORMAT] = N_("Format"),
61 };
63 static unsigned max_tag_label_width;
65 enum stats_label {
66 STATS_ARTISTS,
67 STATS_ALBUMS,
68 STATS_SONGS,
69 STATS_UPTIME,
70 STATS_DBUPTIME,
71 STATS_PLAYTIME,
72 STATS_DBPLAYTIME,
73 };
75 static const char *const stats_labels[] = {
76 [STATS_ARTISTS] = N_("Number of artists"),
77 [STATS_ALBUMS] = N_("Number of albums"),
78 [STATS_SONGS] = N_("Number of songs"),
79 [STATS_UPTIME] = N_("Uptime"),
80 [STATS_DBUPTIME] = N_("Most recent db update"),
81 [STATS_PLAYTIME] = N_("Playtime"),
82 [STATS_DBPLAYTIME] = N_("DB playtime"),
83 };
85 static unsigned max_stats_label_width;
87 static struct list_window *lw;
89 static struct mpd_song *next_song;
91 static struct {
92 struct mpd_song *selected_song;
93 struct mpd_song *played_song;
94 GPtrArray *lines;
95 } current;
97 static void
98 screen_song_clear(void)
99 {
100 for (guint i = 0; i < current.lines->len; ++i)
101 g_free(g_ptr_array_index(current.lines, i));
103 g_ptr_array_set_size(current.lines, 0);
105 if (current.selected_song != NULL) {
106 mpd_song_free(current.selected_song);
107 current.selected_song = NULL;
108 }
109 if (current.played_song != NULL) {
110 mpd_song_free(current.played_song);
111 current.played_song = NULL;
112 }
113 }
115 static const char *
116 screen_song_list_callback(unsigned idx, gcc_unused void *data)
117 {
118 assert(idx < current.lines->len);
120 return g_ptr_array_index(current.lines, idx);
121 }
124 static void
125 screen_song_init(WINDOW *w, unsigned cols, unsigned rows)
126 {
127 for (unsigned i = 0; i < G_N_ELEMENTS(tag_labels); ++i) {
128 if (tag_labels[i] != NULL) {
129 unsigned width = utf8_width(_(tag_labels[i]));
131 if (width > max_tag_label_width)
132 max_tag_label_width = width;
133 }
134 }
136 for (unsigned i = 0; i < G_N_ELEMENTS(stats_labels); ++i) {
137 if (stats_labels[i] != NULL) {
138 unsigned width = utf8_width(_(stats_labels[i]));
140 if (width > max_stats_label_width)
141 max_stats_label_width = width;
142 }
143 }
145 /* We will need at least 10 lines, so this saves 10 reallocations :) */
146 current.lines = g_ptr_array_sized_new(10);
147 lw = list_window_init(w, cols, rows);
148 lw->hide_cursor = true;
149 }
151 static void
152 screen_song_exit(void)
153 {
154 list_window_free(lw);
156 screen_song_clear();
158 g_ptr_array_free(current.lines, TRUE);
159 current.lines = NULL;
160 }
162 static void
163 screen_song_resize(unsigned cols, unsigned rows)
164 {
165 list_window_resize(lw, cols, rows);
166 }
168 static const char *
169 screen_song_title(gcc_unused char *str, gcc_unused size_t size)
170 {
171 return _("Song viewer");
172 }
174 static void
175 screen_song_paint(void)
176 {
177 list_window_paint(lw, screen_song_list_callback, NULL);
178 }
180 /* Appends a line with a fixed width for the label column
181 * Handles NULL strings gracefully */
182 static void
183 screen_song_append(const char *label, const char *value, unsigned label_col)
184 {
185 const unsigned label_width = locale_width(label) + 2;
187 assert(label != NULL);
188 assert(value != NULL);
189 assert(g_utf8_validate(value, -1, NULL));
191 /* +2 for ': ' */
192 label_col += 2;
193 const int value_col = lw->cols - label_col;
194 /* calculate the number of required linebreaks */
195 const gchar *value_iter = value;
196 const int label_size = strlen(label) + label_col;
198 while (*value_iter != 0) {
199 char *entry = g_malloc(label_size), *entry_iter;
200 if (value_iter == value) {
201 entry_iter = entry + g_sprintf(entry, "%s: ", label);
202 /* fill the label column with whitespaces */
203 memset(entry_iter, ' ', label_col - label_width);
204 entry_iter += label_col - label_width;
205 }
206 else {
207 /* fill the label column with whitespaces */
208 memset(entry, ' ', label_col);
209 entry_iter = entry + label_col;
210 }
211 /* skip whitespaces */
212 while (g_ascii_isspace(*value_iter)) ++value_iter;
214 char *p = g_strdup(value_iter);
215 unsigned width = utf8_cut_width(p, value_col);
216 if (width == 0) {
217 /* not enough room for anything - bail out */
218 g_free(entry);
219 g_free(p);
220 break;
221 }
223 *entry_iter = 0;
225 value_iter += strlen(p);
226 p = replace_utf8_to_locale(p);
227 char *q = g_strconcat(entry, p, NULL);
228 g_free(entry);
229 g_free(p);
231 g_ptr_array_add(current.lines, q);
232 }
233 }
235 static void
236 screen_song_append_tag(const struct mpd_song *song, enum mpd_tag_type tag)
237 {
238 const char *label = _(tag_labels[tag]);
239 unsigned i = 0;
240 const char *value;
242 assert((unsigned)tag < G_N_ELEMENTS(tag_labels));
243 assert(label != NULL);
245 while ((value = mpd_song_get_tag(song, tag, i++)) != NULL)
246 screen_song_append(label, value, max_tag_label_width);
247 }
249 static void
250 screen_song_add_song(const struct mpd_song *song)
251 {
252 assert(song != NULL);
254 char songpos[16];
255 g_snprintf(songpos, sizeof(songpos), "%d", mpd_song_get_pos(song) + 1);
256 screen_song_append(_(tag_labels[LABEL_POSITION]), songpos,
257 max_tag_label_width);
259 screen_song_append_tag(song, MPD_TAG_ARTIST);
260 screen_song_append_tag(song, MPD_TAG_TITLE);
261 screen_song_append_tag(song, MPD_TAG_ALBUM);
263 /* create time string and add it */
264 if (mpd_song_get_duration(song) > 0) {
265 char length[16];
266 format_duration_short(length, sizeof(length),
267 mpd_song_get_duration(song));
269 const char *value = length;
271 char buffer[64];
273 if (mpd_song_get_end(song) > 0) {
274 char start[16], end[16];
275 format_duration_short(start, sizeof(start),
276 mpd_song_get_start(song));
277 format_duration_short(end, sizeof(end),
278 mpd_song_get_end(song));
280 snprintf(buffer, sizeof(buffer), "%s [%s-%s]\n",
281 length, start, end);
282 value = buffer;
283 } else if (mpd_song_get_start(song) > 0) {
284 char start[16];
285 format_duration_short(start, sizeof(start),
286 mpd_song_get_start(song));
288 snprintf(buffer, sizeof(buffer), "%s [%s-]\n",
289 length, start);
290 value = buffer;
291 }
293 screen_song_append(_(tag_labels[LABEL_LENGTH]), value,
294 max_tag_label_width);
295 }
297 screen_song_append_tag(song, MPD_TAG_COMPOSER);
298 screen_song_append_tag(song, MPD_TAG_NAME);
299 screen_song_append_tag(song, MPD_TAG_DISC);
300 screen_song_append_tag(song, MPD_TAG_TRACK);
301 screen_song_append_tag(song, MPD_TAG_DATE);
302 screen_song_append_tag(song, MPD_TAG_GENRE);
303 screen_song_append_tag(song, MPD_TAG_COMMENT);
305 screen_song_append(_(tag_labels[LABEL_PATH]), mpd_song_get_uri(song),
306 max_tag_label_width);
307 }
309 static void
310 screen_song_append_stats(enum stats_label label, const char *value)
311 {
312 screen_song_append(_(stats_labels[label]), value,
313 max_stats_label_width);
314 }
316 static bool
317 screen_song_add_stats(struct mpd_connection *connection)
318 {
319 struct mpd_stats *mpd_stats = mpd_run_stats(connection);
320 if (mpd_stats == NULL)
321 return false;
323 g_ptr_array_add(current.lines, g_strdup(_("MPD statistics")) );
325 char buf[64];
326 g_snprintf(buf, sizeof(buf), "%d",
327 mpd_stats_get_number_of_artists(mpd_stats));
328 screen_song_append_stats(STATS_ARTISTS, buf);
329 g_snprintf(buf, sizeof(buf), "%d",
330 mpd_stats_get_number_of_albums(mpd_stats));
331 screen_song_append_stats(STATS_ALBUMS, buf);
332 g_snprintf(buf, sizeof(buf), "%d",
333 mpd_stats_get_number_of_songs(mpd_stats));
334 screen_song_append_stats(STATS_SONGS, buf);
336 format_duration_long(buf, sizeof(buf),
337 mpd_stats_get_db_play_time(mpd_stats));
338 screen_song_append_stats(STATS_DBPLAYTIME, buf);
340 format_duration_long(buf, sizeof(buf),
341 mpd_stats_get_play_time(mpd_stats));
342 screen_song_append_stats(STATS_PLAYTIME, buf);
344 format_duration_long(buf, sizeof(buf),
345 mpd_stats_get_uptime(mpd_stats));
346 screen_song_append_stats(STATS_UPTIME, buf);
348 GDate *date = g_date_new();
349 g_date_set_time_t(date, mpd_stats_get_db_update_time(mpd_stats));
350 g_date_strftime(buf, sizeof(buf), "%x", date);
351 screen_song_append_stats(STATS_DBUPTIME, buf);
352 g_date_free(date);
354 mpd_stats_free(mpd_stats);
355 return true;
356 }
358 static void
359 audio_format_to_string(char *buffer, size_t size,
360 const struct mpd_audio_format *format)
361 {
362 #if LIBMPDCLIENT_CHECK_VERSION(2,10,0)
363 if (format->bits == MPD_SAMPLE_FORMAT_FLOAT) {
364 g_snprintf(buffer, size, "%u:f:%u",
365 format->sample_rate,
366 format->channels);
367 return;
368 }
370 if (format->bits == MPD_SAMPLE_FORMAT_DSD) {
371 if (format->sample_rate > 0 &&
372 format->sample_rate % 44100 == 0) {
373 /* use shortcuts such as "dsd64" which implies the
374 sample rate */
375 g_snprintf(buffer, size, "dsd%u:%u",
376 format->sample_rate * 8 / 44100,
377 format->channels);
378 return;
379 }
381 g_snprintf(buffer, size, "%u:dsd:%u",
382 format->sample_rate,
383 format->channels);
384 return;
385 }
386 #endif
388 g_snprintf(buffer, size, "%u:%u:%u",
389 format->sample_rate, format->bits,
390 format->channels);
391 }
393 static void
394 screen_song_update(struct mpdclient *c)
395 {
396 /* Clear all lines */
397 for (guint i = 0; i < current.lines->len; ++i)
398 g_free(g_ptr_array_index(current.lines, i));
399 g_ptr_array_set_size(current.lines, 0);
401 /* If a song was selected before the song screen was opened */
402 if (next_song != NULL) {
403 assert(current.selected_song == NULL);
404 current.selected_song = next_song;
405 next_song = NULL;
406 }
408 if (current.selected_song != NULL &&
409 (c->song == NULL ||
410 strcmp(mpd_song_get_uri(current.selected_song),
411 mpd_song_get_uri(c->song)) != 0 ||
412 !mpdclient_is_playing(c))) {
413 g_ptr_array_add(current.lines, g_strdup(_("Selected song")) );
414 screen_song_add_song(current.selected_song);
415 g_ptr_array_add(current.lines, g_strdup("\0"));
416 }
418 if (c->song != NULL && mpdclient_is_playing(c)) {
419 if (current.played_song != NULL) {
420 mpd_song_free(current.played_song);
421 }
422 current.played_song = mpd_song_dup(c->song);
423 g_ptr_array_add(current.lines, g_strdup(_("Currently playing song")));
424 screen_song_add_song(current.played_song);
426 if (mpd_status_get_kbit_rate(c->status) > 0) {
427 char buf[16];
428 g_snprintf(buf, sizeof(buf), _("%d kbps"),
429 mpd_status_get_kbit_rate(c->status));
430 screen_song_append(_(tag_labels[LABEL_BITRATE]), buf,
431 max_tag_label_width);
432 }
434 const struct mpd_audio_format *format =
435 mpd_status_get_audio_format(c->status);
436 if (format) {
437 char buf[32];
438 audio_format_to_string(buf, sizeof(buf), format);
439 screen_song_append(_(tag_labels[LABEL_FORMAT]), buf,
440 max_tag_label_width);
441 }
443 g_ptr_array_add(current.lines, g_strdup("\0"));
444 }
446 /* Add some statistics about mpd */
447 struct mpd_connection *connection = mpdclient_get_connection(c);
448 if (connection != NULL && !screen_song_add_stats(connection))
449 mpdclient_handle_error(c);
451 list_window_set_length(lw, current.lines->len);
452 screen_song_paint();
453 }
455 static bool
456 screen_song_cmd(struct mpdclient *c, command_t cmd)
457 {
458 if (list_window_scroll_cmd(lw, cmd)) {
459 screen_song_paint();
460 return true;
461 }
463 switch(cmd) {
464 case CMD_LOCATE:
465 if (current.selected_song != NULL) {
466 screen_file_goto_song(c, current.selected_song);
467 return true;
468 }
469 if (current.played_song != NULL) {
470 screen_file_goto_song(c, current.played_song);
471 return true;
472 }
474 return false;
476 #ifdef ENABLE_LYRICS_SCREEN
477 case CMD_SCREEN_LYRICS:
478 if (current.selected_song != NULL) {
479 screen_lyrics_switch(c, current.selected_song, false);
480 return true;
481 }
482 if (current.played_song != NULL) {
483 screen_lyrics_switch(c, current.played_song, true);
484 return true;
485 }
486 return false;
488 #endif
490 case CMD_SCREEN_SWAP:
491 if (current.selected_song != NULL)
492 screen_swap(c, current.selected_song);
493 else
494 // No need to check if this is null - we'd pass null anyway
495 screen_swap(c, current.played_song);
496 return true;
498 default:
499 break;
500 }
502 if (screen_find(lw, cmd, screen_song_list_callback, NULL)) {
503 /* center the row */
504 list_window_center(lw, lw->selected);
505 screen_song_paint();
506 return true;
507 }
509 return false;
510 }
512 const struct screen_functions screen_song = {
513 .init = screen_song_init,
514 .exit = screen_song_exit,
515 .open = screen_song_update,
516 .close = screen_song_clear,
517 .resize = screen_song_resize,
518 .paint = screen_song_paint,
519 .update = screen_song_update,
520 .cmd = screen_song_cmd,
521 .get_title = screen_song_title,
522 };
524 void
525 screen_song_switch(struct mpdclient *c, const struct mpd_song *song)
526 {
527 assert(song != NULL);
528 assert(current.selected_song == NULL);
529 assert(current.played_song == NULL);
531 next_song = mpd_song_dup(song);
532 screen_switch(&screen_song, c);
533 }