1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
#pragma once
#include "common.h"
#include "config.h"
#include <pthread.h>
#define number_of_watchers 2
enum play_status_type {
PS_PLAYING = 0,
PS_PAUSED,
PS_STOPPED,
} play_status_type;
enum shuffle_status_type {
SS_OFF = 0,
SS_ON,
} shuffle_status_type;
enum repeat_status_type {
RS_NONE = 0,
RS_SINGLE,
RS_ALL,
} repeat_status_type;
struct metadata_bundle;
typedef void (*metadata_watcher)(struct metadata_bundle *argc, void *userdata);
typedef struct metadata_bundle {
int changed; // normally 0, nonzero if a field has been changed
int playerstatusupdates_are_received; // false if it's "traditional" metadata
enum play_status_type play_status;
int play_status_changed;
enum shuffle_status_type shuffle_status;
int shuffle_status_changed;
enum repeat_status_type repeat_status;
int repeat_status_changed;
char *track_name; // a malloced string -- if non-zero, free it before replacing it
int track_name_changed;
char *artist_name; // a malloced string -- if non-zero, free it before replacing it
int artist_name_changed;
char *album_name; // a malloced string -- if non-zero, free it before replacing it
int album_name_changed;
char *genre; // a malloced string -- if non-zero, free it before replacing it
int genre_changed;
uint32_t item_id; // seems to be a track ID -- see itemid in DACP.c
int item_id_changed;
uint32_t songtime_in_milliseconds;
unsigned char
item_composite_id[16]; // seems to be nowplaying 4 ids: dbid, plid, playlistItem, itemid
//
enum play_status_type player_state; // this is the state of the actual player itself, which can be a bit noisy.
int speaker_volume; // this is the actual speaker volume, allowing for the main volume and the speaker volume control
int previous_speaker_volume; // this is needed to prevent a loop
metadata_watcher watchers[number_of_watchers]; // functions to call if the metadata is changed.
void *watchers_data[number_of_watchers]; // their individual data
} metadata_bundle;
struct metadata_bundle metadata_store;
void add_metadata_watcher(metadata_watcher fn, void *userdata);
void run_metadata_watchers(void);
void metadata_hub_init(void);
|
