/
musicLibrary.c
216 lines (191 loc) · 5.41 KB
/
musicLibrary.c
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
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <gio/gio.h>
#include <gtk/gtk.h>
#include <id3tag.h>
#include "musicLibrary.h"
#define MUSIC_DIR "/home/joleary/Music\0"
/*
* private protypes only used within the thread
*/
int recurseDirs(const char *,ThreadManager *);
int addToIndex(const char *,const char *,const char *);
char * getTagString(struct id3_tag *tag,const char *frameName);
libraryEntry *rootMusicLibraryEntry = NULL;
libraryEntry *lastMusicLibraryEntry = NULL;
long musicLibraryTrackCount=0;
pthread_t threadId;
ThreadManager *tm;
int indexReady;
/*
* consider emitting a signal to show the thread is doing somthing
* The thread is mostly responsible for building an index
* so emit at the start of every call
*/
char * getTagString(struct id3_tag *tag, const char *frameName) {
struct id3_frame *frame;
union id3_field *field;
int i;
const id3_ucs4_t *unicode;
char *ret;
frame = id3_tag_findframe(tag,frameName,0);
if(!frame) {
fprintf(stdout,"No frame\n");
return NULL;
}
for(i=0;;i++) {
field = id3_frame_field(frame,i);
if(!field) {
break;
}
if(id3_field_type(field) == ID3_FIELD_TYPE_STRINGLIST) {
unicode = id3_field_getstrings(field,0);
if(unicode) {
id3_utf8_t *str;
str = id3_ucs4_utf8duplicate(unicode);
ret = (char *) str;
}
}
}
return ret;
}
trackDetails * getMP3Details(char *path) {
trackDetails *details;
details = calloc(1,sizeof(trackDetails));
struct id3_file *mp3file = NULL;
struct id3_tag *tag = NULL;
mp3file = id3_file_open(path,ID3_FILE_MODE_READONLY);
if(mp3file!=NULL) {
tag = id3_file_tag(mp3file);
details->title = getTagString(tag,"TIT2");
details->artist = getTagString(tag,"TPE1");
details->album = getTagString(tag,"TALB");
} else {
fprintf(stdout,"could not get details for %s\n",path);
}
id3_file_close(mp3file);
return details;
}
int recurseDirs(const char *path, ThreadManager *threadman) {
GValue message = {0,};
g_value_init(&message,G_TYPE_STRING);
g_value_set_string(&message,"busy");
g_object_set_property(G_OBJECT(threadman),"status", &message);
g_value_unset(&message);
if(path==NULL) {
return 1;
}
sleep(1);
GFile *dir = g_file_new_for_path(path);
GFileEnumerator *fileEnumerator;
GError *errorHandler=NULL;
fileEnumerator = g_file_enumerate_children(dir,"standard::*",G_FILE_QUERY_INFO_NONE,NULL,&errorHandler);
if(errorHandler!=NULL) {
fprintf(stderr,"ERROR: %s\n",errorHandler->message);
g_error_free(errorHandler);
return 1;
}
if(fileEnumerator!=NULL) {
GFileInfo *finfo = g_file_enumerator_next_file(fileEnumerator,NULL,NULL);
while(finfo!=NULL) {
if(!g_file_info_get_is_hidden(finfo)) {
const gchar *name;
char *fullPath;
name = g_file_info_get_name(finfo);
fullPath = strdup(path);
fullPath = realloc(fullPath,strlen(path)+3+strlen(name));
strcat(fullPath,"/");
strcat(fullPath,name);
if(g_file_info_get_file_type(finfo)==G_FILE_TYPE_DIRECTORY) {
int res = recurseDirs(fullPath,threadman);
if(res!=0) {
fprintf(stderr,"Error with %s\n",fullPath);
}
} else {
const gchar *type = g_file_info_get_attribute_string(finfo,G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE);
if(strcmp(type,"audio/mpeg")==0) {
addToIndex(name,fullPath,type);
}
}
free(fullPath);
}
finfo = g_file_enumerator_next_file(fileEnumerator,NULL,NULL);
}
g_object_unref(fileEnumerator);
}
return 0;
}
int addToIndex(const char *shortName, const char *fullPath,const char *mimeType) {
if(strcmp(mimeType,"audio/mpeg")!=0) {
return 1;
}
libraryEntry *temp;
temp = calloc(1,sizeof(libraryEntry));
temp->fullPath = strdup(fullPath);
temp->shortName = strdup(shortName);
temp->mimeType = strdup(mimeType);
temp->details = getMP3Details(temp->fullPath);
if(rootMusicLibraryEntry==NULL) {
rootMusicLibraryEntry = temp;
} else {
lastMusicLibraryEntry->nextEntry = temp;
}
lastMusicLibraryEntry = temp;
musicLibraryTrackCount++;
return 0;
}
void *searchFiles(void *arg) {
ThreadManager *threadman = (ThreadManager *)arg;
int res = recurseDirs(MUSIC_DIR,threadman);
if(res==0) {
fprintf(stdout,"completed cache\n");
// make the index available
// emit a completed signal
} else {
fprintf(stdout,"caching error\n");
GValue message = {0,};
g_value_init(&message,G_TYPE_STRING);
g_value_set_string(&message,"idle");
g_object_set_property(G_OBJECT(threadman),"status", &message);
g_value_unset(&message);
sleep(10);
free(rootMusicLibraryEntry);
rootMusicLibraryEntry=NULL;
// clear the index and
// then sleep for a while
// we can try again later
// emit idle signal until we resume
}
fprintf(stdout,"thread exit\n");
//free(rootMusicLibraryEntry);
GValue message = {0,};
g_value_init(&message,G_TYPE_STRING);
g_value_set_string(&message,"finished");
g_object_set_property(G_OBJECT(tm),"status", &message);
g_value_unset(&message);
indexReady=1;
pthread_exit(0);
}
void beginThread() {
int ret;
tm = g_object_new(THREAD_TYPE_MANAGER,NULL);
ret = pthread_create(&threadId,NULL,searchFiles,(void *)tm);
}
int isMusicLibraryAvailable() {
return indexReady;
}
void initMusicLibrary() {
indexReady = 0;
// check for a pre-built index
if(g_file_test("/home/joleary/Projects/zenzibar/mLib.xml",G_FILE_TEST_EXISTS)) {
// load and parse the index
// set the index to ready
} else {
beginThread();
}
}
libraryEntry * getFirstTrack() {
return rootMusicLibraryEntry;
}