2 * Copyright 2022 Olaf Wintermann
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20 * DEALINGS IN THE SOFTWARE.
29 #include <sys/fcntl.h>
37 #include <sys/socket.h>
45 extern char **environ;
47 #define STR_BUFSIZE 512
48 #define WID_ARG_BUFSIZE 24
50 #define PLAYER_POLL_TIMEOUT 500
51 #define PLAYER_IN_BUFSIZE 8192
53 static void json_print(JSONValue *value, char *name, int indent);
55 static void* start_player(void *data);
57 static void player_io(Player *p);
59 static void handle_json_rpc_msg(Player *player, JSONValue *v);
60 static void handle_json_rpc_reqid(Player *player, JSONValue *v, int reqid);
61 static void handle_json_rpc_event(Player *player, JSONValue *v, JSONValue *event);
63 void PlayerOpenFile(MainWindow *win) {
65 if(pthread_create(&tid, NULL, start_player, win)) {
66 perror("pthread_create");
70 static int prepare_player(Player *player, char *log_arg, char *ipc_arg) {
71 // create tmp directory for IPC
72 char *player_tmp = NULL;
73 char buf[STR_BUFSIZE];
74 snprintf(buf, STR_BUFSIZE, "/tmp/uwplayer-%x", rand());
75 int mkdir_success = 0;
76 for(int t=0;t<5;t++) {
77 if(!mkdir(buf, S_IRWXU)) {
80 } else if(errno != EEXIST) {
84 if(!mkdir_success) return 1;
85 player_tmp = strdup(buf);
86 player->tmp = player_tmp;
88 // prepare log/ipc args and create log fifo
91 if(snprintf(log_arg, STR_BUFSIZE, "--log-file=%s/%s", player_tmp, "log.fifo") >= STR_BUFSIZE) {
94 if(snprintf(ipc_arg, STR_BUFSIZE, "--input-ipc-server=%s/%s", player_tmp, "ipc.socket") >= STR_BUFSIZE) {
98 snprintf(buf, STR_BUFSIZE, "%s/log.fifo", player_tmp);
99 if(err || mkfifo(buf, S_IRUSR|S_IWUSR)) {
107 static void* wait_for_process(void *data) {
108 Player *player = data;
110 waitpid(player->process, &status, 0);
112 player->isactive = FALSE;
113 player->status = status;
119 static int start_player_process(Player *player, MainWindow *win) {
120 char log_arg[STR_BUFSIZE];
121 char ipc_arg[STR_BUFSIZE];
123 if(prepare_player(player, log_arg, ipc_arg)) {
127 char *player_bin = SettingsGetPlayerBin();
129 fprintf(stderr, "No mpv binary available\n");
133 // -wid parameter value for embedding the player in the player_widget
134 Window wid = XtWindow(win->player_widget);
135 char wid_arg[WID_ARG_BUFSIZE];
136 if(snprintf(wid_arg, WID_ARG_BUFSIZE, "%lu", wid) >= WID_ARG_BUFSIZE) {
140 // create player arg list
142 args[0] = player_bin;
145 args[3] = "--no-terminal";
151 posix_spawn_file_actions_t actions;
152 posix_spawn_file_actions_init(&actions);
154 //posix_spawn_file_actions_adddup2(&actions, pin[0], STDIN_FILENO);
155 //posix_spawn_file_actions_adddup2(&actions, pout[1], STDOUT_FILENO);
159 if(posix_spawn(&player_pid, player_bin, &actions, NULL, args, environ)) {
160 perror("posix_spawn");
163 posix_spawn_file_actions_destroy(&actions);
165 player->process = player_pid;
166 player->isactive = TRUE;
169 if(pthread_create(&tid, NULL, wait_for_process, player)) {
170 perror("pthread_create");
176 static int wait_for_ipc(Player *player) {
177 char buf[STR_BUFSIZE];
178 snprintf(buf, STR_BUFSIZE, "%s/log.fifo", player->tmp); // cannot fail
181 int fd_log = open(buf, O_RDONLY);
183 perror("Cannot open log");
186 player->log = fd_log;
188 // read log until IPC socket is created
189 char *scan_str = "Listening to IPC";
191 int scan_len = strlen(scan_str);
194 while((r = read(fd_log, buf, STR_BUFSIZE)) > 0) {
195 for(int i=0;i<r;i++) {
199 if(scan_pos == scan_len) {
204 if(scan_str[scan_pos] == c) {
210 if(ipc_listen) break;
216 static int connect_to_ipc(Player *player) {
217 // connect to IPC socket
218 int fd_ipc = socket(AF_UNIX, SOCK_STREAM, 0);
220 perror("Cannot create IPC socket");
223 player->ipc = fd_ipc;
225 char buf[STR_BUFSIZE];
226 snprintf(buf, STR_BUFSIZE, "%s/%s", player->tmp, "ipc.socket"); // cannot fail
228 struct sockaddr_un ipc_addr;
229 memset(&ipc_addr, 0, sizeof(struct sockaddr_un));
230 ipc_addr.sun_family = AF_UNIX;
231 memcpy(ipc_addr.sun_path, buf, strlen(buf));
232 if(connect(fd_ipc, (struct sockaddr *)&ipc_addr, sizeof(ipc_addr)) == -1) {
233 perror("Cannot connect to IPC socket");
240 static void* start_player(void *data) {
241 MainWindow *win = data;
243 Player *player = malloc(sizeof(Player));
244 memset(player, 0, sizeof(Player));
247 if(start_player_process(player, win)) {
248 PlayerDestroy(player);
252 // wait until IPC socket is ready
253 if(wait_for_ipc(player)) {
254 PlayerDestroy(player);
259 if(connect_to_ipc(player)) {
260 PlayerDestroy(player);
264 // set player in main window
266 PlayerDestroy(win->player);
268 win->player = player;
276 static void player_io(Player *p) {
277 struct pollfd fds[2];
279 fds[0].events = POLLIN;
281 JSONParser *js = json_parser_new();
283 char buf[PLAYER_IN_BUFSIZE];
284 while(p->isactive && poll(fds, 2, PLAYER_POLL_TIMEOUT)) {
285 if(fds[0].revents == POLLIN) {
287 if((r = read(fds[0].fd, buf, PLAYER_IN_BUFSIZE)) <= 0) {
290 //fwrite(buf, 1, r, stdout);
292 json_parser_fill(js, buf, r);
296 while((ret = json_read_value(js, &value)) == 1) {
297 handle_json_rpc_msg(p, value);
298 json_value_free(value);
302 fprintf(stderr, "JSON-RPC error\n");
307 char *cmd = "{ \"command\": [\"get_property\", \"playback-time\"], request_id=\"" REQ_ID_PLAYBACK_TIME "\" }\n";
308 //write(p->ipc, cmd, strlen(cmd));
312 printf("PlayerEnd: %s\n", strerror(errno));
317 static void handle_json_rpc_msg(Player *player, JSONValue *v) {
318 if(v->type != JSON_OBJECT) return;
320 JSONValue *request_id_v = json_obj_get(&v->value.object, "request_id");
321 JSONValue *event = NULL;
322 if(request_id_v && request_id_v->type == JSON_STRING) {
324 if(request_id_v->value.string.length == 2) {
325 request_id = 10 * (request_id_v->value.string.string[0] - '0') + (request_id_v->value.string.string[1] - '0');
326 handle_json_rpc_reqid(player, v, request_id);
329 } else if ((event = json_obj_get(&v->value.object, "event")) != NULL) {
330 handle_json_rpc_event(player, v, event);
333 //json_print(v, NULL, 0);
336 static Boolean player_widget_set_size(XtPointer data) {
337 Player *player = data;
338 MainWindow *win = GetMainWindow();
340 Dimension win_width, win_height;
341 XtVaGetValues(win->window, XmNwidth, &win_width, XmNheight, &win_height, NULL);
342 Dimension player_width, player_height;
343 XtVaGetValues(win->player_widget, XmNwidth, &player_width, XmNheight, &player_height, NULL);
345 Dimension new_width = player->width + win_width - player_width;
346 Dimension new_height = player->height + win_height - player_height;
349 XtVaSetValues(win->window, XmNwidth, new_width, XmNheight, new_height, NULL);
351 // set window aspect ratio
353 hints.flags = PAspect;
354 hints.min_aspect.x = new_width;
355 hints.min_aspect.y = new_height;
356 hints.max_aspect.x = new_width;
357 hints.max_aspect.y = new_height;
358 XSetWMNormalHints(XtDisplay(win->window), XtWindow(win->window), &hints);
365 static void player_set_size(Player *player, int width, int height) {
367 player->width = width;
370 player->height = height;
372 if(player->width > 0 && player->height > 0) {
373 AppExecProc(player_widget_set_size, player);
377 static void handle_json_rpc_reqid(Player *player, JSONValue *v, int reqid) {
378 JSONValue *data = json_obj_get(&v->value.object, "data");
382 case REQ_ID_PLAYBACK_TIME_INT: {
383 if(data->type == JSON_NUMBER) {
384 player->playback_time = data->value.number.value;
388 case REQ_ID_WIDTH_INT: {
389 if(data->type == JSON_INTEGER) {
390 player_set_size(player, data->value.integer.value, -1);
394 case REQ_ID_HEIGHT_INT: {
395 if(data->type == JSON_INTEGER) {
396 player_set_size(player, -1, data->value.integer.value);
403 static Boolean get_player_window(XtPointer data) {
405 MainWindow *win = GetMainWindow();
407 Widget player_wid = win->player_widget;
411 XQueryTree(XtDisplay(player_wid), XtWindow(player_wid), &root, &parent, &child, &nchild);
413 p->window = child[0];
416 SetPlayerWindow(p->window);
417 XSelectInput(XtDisplay(win->player_widget), p->window, PointerMotionMask);
423 #define CURSOR_AUTOHIDE_THRESHOLD_SEC 4
425 static Boolean hide_cursor(XtPointer data) {
426 MainWindow *win = data;
427 WindowHidePlayerCursor(win);
431 static void check_hide_cursor(Player *p) {
432 MainWindow *win = GetMainWindow();
433 if(win->cursorhidden) return;
435 if(p->playback_time - win->motion_playback_time > CURSOR_AUTOHIDE_THRESHOLD_SEC) {
436 AppExecProc(hide_cursor, win);
440 static void handle_json_rpc_event(Player *p, JSONValue *v, JSONValue *event) {
441 if(!json_strcmp(event, "property-change")) {
442 JSONValue *name = json_obj_get(&v->value.object, "name");
443 JSONValue *data = json_obj_get(&v->value.object, "data");
444 if(!json_strcmp(name, "playback-time")) {
445 if(data && data->type == JSON_NUMBER) {
446 p->playback_time = data->value.number.value;
447 //printf("playback-time: %f\n", p->playback_time);
448 check_hide_cursor(p);
450 } else if(!json_strcmp(name, "eof-reached")) {
451 if(data && data->type == JSON_LITERAL && data->value.literal.literal == JSON_TRUE) {
454 } else if(!json_strcmp(name, "osd-height")) {
455 if(data->type == JSON_NUMBER) {
456 p->osd_height = data->value.number.value;
459 } else if(!p->isstarted && !json_strcmp(event, "playback-restart")) {
460 char *cmd = "{ \"command\": [\"observe_property\", 1, \"playback-time\"] }\n"
461 "{ \"command\": [\"observe_property\", 1, \"eof-reached\"] }\n"
462 "{ \"command\": [\"observe_property\", 1, \"osd-height\"] }\n"
463 "{ \"command\": [\"get_property\", \"width\"], request_id=\"" REQ_ID_WIDTH "\" }\n"
464 "{ \"command\": [\"get_property\", \"height\"], request_id=\"" REQ_ID_HEIGHT "\" }\n"
465 "{ \"command\": [\"set_property\", \"keep-open\", true] }\n";
466 write(p->ipc, cmd, strlen(cmd));
469 AppExecProc(get_player_window, p);
473 void PlayerDestroy(Player *p) {
486 kill(p->process, SIGTERM);
494 static void json_print(JSONValue *value, char *name, int indent) {
496 printf("%*s%s: ", indent*4, "", name);
498 printf("%*s", indent*4, "");
502 switch(value->type) {
506 for(int i=0;i<value->value.object.size;i++) {
507 JSONObjValue val = value->value.object.values[i];
508 json_print(val.value, val.name, indent+1);
509 if(i+1 < value->value.object.size) {
516 printf("%*s}", indent*4, "");
522 for(int i=0;i<value->value.object.size;i++) {
523 JSONValue *v = value->value.array.array[i];
524 json_print(v, NULL, indent+1);
525 if(i+1 < value->value.array.size) {
532 printf("%*s]", indent*4, "");
536 printf("\"%s\"", value->value.string.string);
540 printf("%i", (int)value->value.integer.value);
544 printf("%f", value->value.number.value);
549 switch(value->value.literal.literal) {
550 case JSON_NULL: break;
551 case JSON_TRUE: lit = "true"; break;
552 case JSON_FALSE: lit = "false"; break;
564 static Boolean open_next_file(XtPointer data) {
566 MainWindow *win = GetMainWindow();
575 void PlayerEOF(Player *p) {
576 MainWindow *win = GetMainWindow();
577 if(win->repeatTrack) {
578 char *cmd = "{ \"command\": [\"set_property\", \"playback-time\", 0] }\n";
579 write(p->ipc, cmd, strlen(cmd));
580 } else if(win->autoplayFolder) {
581 char *next_file = util_find_next_file(win->file);
583 AppExecProc(open_next_file, next_file);
588 void PlayerHandleInput(MainWindow *win, Player *p, XmDrawingAreaCallbackStruct *cb) {