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>
44 extern char **environ;
46 #define STR_BUFSIZE 512
47 #define WID_ARG_BUFSIZE 24
49 #define PLAYER_POLL_TIMEOUT 500
50 #define PLAYER_IN_BUFSIZE 8192
52 static void json_print(JSONValue *value, char *name, int indent);
54 static void* start_player(void *data);
56 static void player_io(Player *p);
58 static void handle_json_rpc_msg(Player *player, JSONValue *v);
59 static void handle_json_rpc_reqid(Player *player, JSONValue *v, int reqid);
60 static void handle_json_rpc_event(Player *player, JSONValue *v, JSONValue *event);
62 void PlayerOpenFile(MainWindow *win) {
64 if(pthread_create(&tid, NULL, start_player, win)) {
65 perror("pthread_create");
69 static int prepare_player(Player *player, char *log_arg, char *ipc_arg) {
70 // create tmp directory for IPC
71 char *player_tmp = NULL;
72 char buf[STR_BUFSIZE];
73 snprintf(buf, STR_BUFSIZE, "/tmp/uwplayer-%x", rand());
74 int mkdir_success = 0;
75 for(int t=0;t<5;t++) {
76 if(!mkdir(buf, S_IRWXU)) {
79 } else if(errno != EEXIST) {
83 if(!mkdir_success) return 1;
84 player_tmp = strdup(buf);
85 player->tmp = player_tmp;
87 // prepare log/ipc args and create log fifo
90 if(snprintf(log_arg, STR_BUFSIZE, "--log-file=%s/%s", player_tmp, "log.fifo") >= STR_BUFSIZE) {
93 if(snprintf(ipc_arg, STR_BUFSIZE, "--input-ipc-server=%s/%s", player_tmp, "ipc.socket") >= STR_BUFSIZE) {
97 snprintf(buf, STR_BUFSIZE, "%s/log.fifo", player_tmp);
98 if(err || mkfifo(buf, S_IRUSR|S_IWUSR)) {
106 static void* wait_for_process(void *data) {
107 Player *player = data;
109 waitpid(player->process, &status, 0);
111 player->isactive = FALSE;
112 player->status = status;
118 static int start_player_process(Player *player, MainWindow *win) {
119 char log_arg[STR_BUFSIZE];
120 char ipc_arg[STR_BUFSIZE];
122 if(prepare_player(player, log_arg, ipc_arg)) {
126 char *player_bin = SettingsGetPlayerBin();
128 fprintf(stderr, "No mpv binary available\n");
132 // -wid parameter value for embedding the player in the player_widget
133 Window wid = XtWindow(win->player_widget);
134 char wid_arg[WID_ARG_BUFSIZE];
135 if(snprintf(wid_arg, WID_ARG_BUFSIZE, "%lu", wid) >= WID_ARG_BUFSIZE) {
139 // create player arg list
141 args[0] = player_bin;
144 args[3] = "--no-terminal";
150 posix_spawn_file_actions_t actions;
151 posix_spawn_file_actions_init(&actions);
153 //posix_spawn_file_actions_adddup2(&actions, pin[0], STDIN_FILENO);
154 //posix_spawn_file_actions_adddup2(&actions, pout[1], STDOUT_FILENO);
158 if(posix_spawn(&player_pid, player_bin, &actions, NULL, args, environ)) {
159 perror("posix_spawn");
162 posix_spawn_file_actions_destroy(&actions);
164 player->process = player_pid;
165 player->isactive = TRUE;
168 if(pthread_create(&tid, NULL, wait_for_process, player)) {
169 perror("pthread_create");
175 static int wait_for_ipc(Player *player) {
176 char buf[STR_BUFSIZE];
177 snprintf(buf, STR_BUFSIZE, "%s/log.fifo", player->tmp); // cannot fail
180 int fd_log = open(buf, O_RDONLY);
182 perror("Cannot open log");
185 player->log = fd_log;
187 // read log until IPC socket is created
188 char *scan_str = "Listening to IPC";
190 int scan_len = strlen(scan_str);
193 while((r = read(fd_log, buf, STR_BUFSIZE)) > 0) {
194 for(int i=0;i<r;i++) {
198 if(scan_pos == scan_len) {
203 if(scan_str[scan_pos] == c) {
209 if(ipc_listen) break;
215 static int connect_to_ipc(Player *player) {
216 // connect to IPC socket
217 int fd_ipc = socket(AF_UNIX, SOCK_STREAM, 0);
219 perror("Cannot create IPC socket");
222 player->ipc = fd_ipc;
224 char buf[STR_BUFSIZE];
225 snprintf(buf, STR_BUFSIZE, "%s/%s", player->tmp, "ipc.socket"); // cannot fail
227 struct sockaddr_un ipc_addr;
228 memset(&ipc_addr, 0, sizeof(struct sockaddr_un));
229 ipc_addr.sun_family = AF_UNIX;
230 memcpy(ipc_addr.sun_path, buf, strlen(buf));
231 if(connect(fd_ipc, (struct sockaddr *)&ipc_addr, sizeof(ipc_addr)) == -1) {
232 perror("Cannot connect to IPC socket");
239 static void* start_player(void *data) {
240 MainWindow *win = data;
242 Player *player = malloc(sizeof(Player));
243 memset(player, 0, sizeof(Player));
246 if(start_player_process(player, win)) {
247 PlayerDestroy(player);
251 // wait until IPC socket is ready
252 if(wait_for_ipc(player)) {
253 PlayerDestroy(player);
258 if(connect_to_ipc(player)) {
259 PlayerDestroy(player);
263 // set player in main window
265 PlayerDestroy(win->player);
267 win->player = player;
275 static void player_io(Player *p) {
276 struct pollfd fds[2];
278 fds[0].events = POLLIN;
280 JSONParser *js = json_parser_new();
282 char buf[PLAYER_IN_BUFSIZE];
283 while(p->isactive && poll(fds, 2, PLAYER_POLL_TIMEOUT)) {
284 if(fds[0].revents == POLLIN) {
286 if((r = read(fds[0].fd, buf, PLAYER_IN_BUFSIZE)) <= 0) {
289 //fwrite(buf, 1, r, stdout);
291 json_parser_fill(js, buf, r);
295 while((ret = json_read_value(js, &value)) == 1) {
296 handle_json_rpc_msg(p, value);
297 json_value_free(value);
301 fprintf(stderr, "JSON-RPC error\n");
306 char *cmd = "{ \"command\": [\"get_property\", \"playback-time\"], request_id=\"" REQ_ID_PLAYBACK_TIME "\" }\n";
307 //write(p->ipc, cmd, strlen(cmd));
311 printf("PlayerEnd: %s\n", strerror(errno));
316 static void handle_json_rpc_msg(Player *player, JSONValue *v) {
317 if(v->type != JSON_OBJECT) return;
319 JSONValue *request_id_v = json_obj_get(&v->value.object, "request_id");
320 JSONValue *event = NULL;
321 if(request_id_v && request_id_v->type == JSON_STRING) {
323 if(request_id_v->value.string.length == 2) {
324 request_id = 10 * (request_id_v->value.string.string[0] - '0') + (request_id_v->value.string.string[1] - '0');
325 handle_json_rpc_reqid(player, v, request_id);
328 } else if ((event = json_obj_get(&v->value.object, "event")) != NULL) {
329 handle_json_rpc_event(player, v, event);
332 //json_print(v, NULL, 0);
335 static Boolean player_widget_set_size(XtPointer data) {
336 Player *player = data;
337 MainWindow *win = GetMainWindow();
339 Dimension win_width, win_height;
340 XtVaGetValues(win->window, XmNwidth, &win_width, XmNheight, &win_height, NULL);
341 Dimension player_width, player_height;
342 XtVaGetValues(win->player_widget, XmNwidth, &player_width, XmNheight, &player_height, NULL);
344 Dimension new_width = player->width + win_width - player_width;
345 Dimension new_height = player->height + win_height - player_height;
348 XtVaSetValues(win->window, XmNwidth, new_width, XmNheight, new_height, NULL);
350 // set window aspect ratio
352 hints.flags = PAspect;
353 hints.min_aspect.x = new_width;
354 hints.min_aspect.y = new_height;
355 hints.max_aspect.x = new_width;
356 hints.max_aspect.y = new_height;
357 XSetWMNormalHints(XtDisplay(win->window), XtWindow(win->window), &hints);
364 static void player_set_size(Player *player, int width, int height) {
366 player->width = width;
369 player->height = height;
371 if(player->width > 0 && player->height > 0) {
372 AppExecProc(player_widget_set_size, player);
376 static void handle_json_rpc_reqid(Player *player, JSONValue *v, int reqid) {
377 JSONValue *data = json_obj_get(&v->value.object, "data");
381 case REQ_ID_PLAYBACK_TIME_INT: {
382 if(data->type == JSON_NUMBER) {
383 player->playback_time = data->value.number.value;
387 case REQ_ID_WIDTH_INT: {
388 if(data->type == JSON_INTEGER) {
389 player_set_size(player, data->value.integer.value, -1);
393 case REQ_ID_HEIGHT_INT: {
394 if(data->type == JSON_INTEGER) {
395 player_set_size(player, -1, data->value.integer.value);
402 static Boolean get_player_window(XtPointer data) {
404 MainWindow *win = GetMainWindow();
406 Widget player_wid = win->player_widget;
410 XQueryTree(XtDisplay(player_wid), XtWindow(player_wid), &root, &parent, &child, &nchild);
412 p->window = child[0];
415 SetPlayerWindow(p->window);
416 XSelectInput(XtDisplay(win->player_widget), p->window, PointerMotionMask);
422 #define CURSOR_AUTOHIDE_THRESHOLD_SEC 4
424 static Boolean hide_cursor(XtPointer data) {
425 MainWindow *win = data;
426 WindowHidePlayerCursor(win);
430 static void check_hide_cursor(Player *p) {
431 MainWindow *win = GetMainWindow();
432 if(win->cursorhidden) return;
434 if(p->playback_time - win->motion_playback_time > CURSOR_AUTOHIDE_THRESHOLD_SEC) {
435 AppExecProc(hide_cursor, win);
439 static void handle_json_rpc_event(Player *p, JSONValue *v, JSONValue *event) {
440 if(!json_strcmp(event, "property-change")) {
441 JSONValue *name = json_obj_get(&v->value.object, "name");
442 JSONValue *data = json_obj_get(&v->value.object, "data");
443 if(!json_strcmp(name, "playback-time")) {
444 if(data && data->type == JSON_NUMBER) {
445 p->playback_time = data->value.number.value;
446 //printf("playback-time: %f\n", p->playback_time);
447 check_hide_cursor(p);
449 } else if(!json_strcmp(name, "eof-reached")) {
450 if(data && data->type == JSON_LITERAL && data->value.literal.literal == JSON_TRUE) {
453 } else if(!json_strcmp(name, "osd-height")) {
454 if(data->type == JSON_NUMBER) {
455 p->osd_height = data->value.number.value;
458 } else if(!p->isstarted && !json_strcmp(event, "playback-restart")) {
459 char *cmd = "{ \"command\": [\"observe_property\", 1, \"playback-time\"] }\n"
460 "{ \"command\": [\"observe_property\", 1, \"eof-reached\"] }\n"
461 "{ \"command\": [\"observe_property\", 1, \"osd-height\"] }\n"
462 "{ \"command\": [\"get_property\", \"width\"], request_id=\"" REQ_ID_WIDTH "\" }\n"
463 "{ \"command\": [\"get_property\", \"height\"], request_id=\"" REQ_ID_HEIGHT "\" }\n"
464 "{ \"command\": [\"set_property\", \"keep-open\", true] }\n";
465 write(p->ipc, cmd, strlen(cmd));
468 AppExecProc(get_player_window, p);
472 void PlayerDestroy(Player *p) {
485 kill(p->process, SIGTERM);
493 static void json_print(JSONValue *value, char *name, int indent) {
495 printf("%*s%s: ", indent*4, "", name);
497 printf("%*s", indent*4, "");
501 switch(value->type) {
505 for(int i=0;i<value->value.object.size;i++) {
506 JSONObjValue val = value->value.object.values[i];
507 json_print(val.value, val.name, indent+1);
508 if(i+1 < value->value.object.size) {
515 printf("%*s}", indent*4, "");
521 for(int i=0;i<value->value.object.size;i++) {
522 JSONValue *v = value->value.array.array[i];
523 json_print(v, NULL, indent+1);
524 if(i+1 < value->value.array.size) {
531 printf("%*s]", indent*4, "");
535 printf("\"%s\"", value->value.string.string);
539 printf("%i", (int)value->value.integer.value);
543 printf("%f", value->value.number.value);
548 switch(value->value.literal.literal) {
549 case JSON_NULL: break;
550 case JSON_TRUE: lit = "true"; break;
551 case JSON_FALSE: lit = "false"; break;
563 void PlayerEOF(Player *p) {
564 MainWindow *win = GetMainWindow();
565 if(win->repeatTrack) {
566 char *cmd = "{ \"command\": [\"set_property\", \"playback-time\", 0] }\n";
567 write(p->ipc, cmd, strlen(cmd));
571 void PlayerHandleInput(MainWindow *win, Player *p, XmDrawingAreaCallbackStruct *cb) {