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3 <title>Light Media Scanner: src/lib/lightmediascanner_db_video.c Source File</title>
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17 <h1>src/lib/lightmediascanner_db_video.c</h1><a href="lightmediascanner__db__video_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
18 <a name="l00021"></a>00021 <span class="preprocessor">#include <<a class="code" href="lightmediascanner__db_8h.html">lightmediascanner_db.h</a>></span>
19 <a name="l00022"></a>00022 <span class="preprocessor">#include "<a class="code" href="lightmediascanner__db__private_8h.html">lightmediascanner_db_private.h</a>"</span>
20 <a name="l00023"></a>00023 <span class="preprocessor">#include <stdlib.h></span>
21 <a name="l00024"></a>00024 <span class="preprocessor">#include <stdio.h></span>
22 <a name="l00025"></a>00025
23 <a name="l00026"></a>00026 <span class="keyword">struct </span>lms_db_video {
24 <a name="l00027"></a>00027 sqlite3 *db;
25 <a name="l00028"></a>00028 sqlite3_stmt *insert;
26 <a name="l00029"></a>00029 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> _references;
27 <a name="l00030"></a>00030 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> _is_started:1;
28 <a name="l00031"></a>00031 };
29 <a name="l00032"></a>00032
30 <a name="l00033"></a>00033 <span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="structlms__db__cache.html">lms_db_cache</a> _cache = {0, NULL};
31 <a name="l00034"></a>00034
32 <a name="l00035"></a>00035 <span class="keyword">static</span> <span class="keywordtype">int</span>
33 <a name="l00036"></a>00036 _db_table_updater_videos_0(sqlite3 *db, <span class="keyword">const</span> <span class="keywordtype">char</span> *table, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> current_version, <span class="keywordtype">int</span> is_last_run) {
34 <a name="l00037"></a>00037 <span class="keywordtype">char</span> *errmsg;
35 <a name="l00038"></a>00038 <span class="keywordtype">int</span> r, ret;
36 <a name="l00039"></a>00039
37 <a name="l00040"></a>00040 errmsg = NULL;
38 <a name="l00041"></a>00041 r = sqlite3_exec(db,
39 <a name="l00042"></a>00042 <span class="stringliteral">"CREATE TABLE IF NOT EXISTS videos ("</span>
40 <a name="l00043"></a>00043 <span class="stringliteral">"id INTEGER PRIMARY KEY, "</span>
41 <a name="l00044"></a>00044 <span class="stringliteral">"title TEXT, "</span>
42 <a name="l00045"></a>00045 <span class="stringliteral">"artist TEXT"</span>
43 <a name="l00046"></a>00046 <span class="stringliteral">")"</span>,
44 <a name="l00047"></a>00047 NULL, NULL, &errmsg);
45 <a name="l00048"></a>00048 <span class="keywordflow">if</span> (r != SQLITE_OK) {
46 <a name="l00049"></a>00049 fprintf(stderr, <span class="stringliteral">"ERROR: could not create 'videos' table: %s\n"</span>, errmsg);
47 <a name="l00050"></a>00050 sqlite3_free(errmsg);
48 <a name="l00051"></a>00051 <span class="keywordflow">return</span> -1;
49 <a name="l00052"></a>00052 }
50 <a name="l00053"></a>00053
51 <a name="l00054"></a>00054 r = sqlite3_exec(db,
52 <a name="l00055"></a>00055 <span class="stringliteral">"CREATE INDEX IF NOT EXISTS videos_title_idx ON videos ("</span>
53 <a name="l00056"></a>00056 <span class="stringliteral">"title"</span>
54 <a name="l00057"></a>00057 <span class="stringliteral">")"</span>,
55 <a name="l00058"></a>00058 NULL, NULL, &errmsg);
56 <a name="l00059"></a>00059 <span class="keywordflow">if</span> (r != SQLITE_OK) {
57 <a name="l00060"></a>00060 fprintf(stderr,
58 <a name="l00061"></a>00061 <span class="stringliteral">"ERROR: could not create 'videos_title_idx' index: %s\n"</span>,
59 <a name="l00062"></a>00062 errmsg);
60 <a name="l00063"></a>00063 sqlite3_free(errmsg);
61 <a name="l00064"></a>00064 <span class="keywordflow">return</span> -2;
62 <a name="l00065"></a>00065 }
63 <a name="l00066"></a>00066
64 <a name="l00067"></a>00067 r = sqlite3_exec(db,
65 <a name="l00068"></a>00068 <span class="stringliteral">"CREATE INDEX IF NOT EXISTS videos_artist_idx ON videos ("</span>
66 <a name="l00069"></a>00069 <span class="stringliteral">"artist"</span>
67 <a name="l00070"></a>00070 <span class="stringliteral">")"</span>,
68 <a name="l00071"></a>00071 NULL, NULL, &errmsg);
69 <a name="l00072"></a>00072 <span class="keywordflow">if</span> (r != SQLITE_OK) {
70 <a name="l00073"></a>00073 fprintf(stderr,
71 <a name="l00074"></a>00074 <span class="stringliteral">"ERROR: could not create 'videos_artist_idx' index: %s\n"</span>,
72 <a name="l00075"></a>00075 errmsg);
73 <a name="l00076"></a>00076 sqlite3_free(errmsg);
74 <a name="l00077"></a>00077 <span class="keywordflow">return</span> -3;
75 <a name="l00078"></a>00078 }
76 <a name="l00079"></a>00079
77 <a name="l00080"></a>00080 ret = <a class="code" href="lightmediascanner__db__common_8c.html#822cae681398710b63c9af149fdacedb">lms_db_create_trigger_if_not_exists</a>(db,
78 <a name="l00081"></a>00081 <span class="stringliteral">"delete_videos_on_files_deleted "</span>
79 <a name="l00082"></a>00082 <span class="stringliteral">"DELETE ON files FOR EACH ROW BEGIN "</span>
80 <a name="l00083"></a>00083 <span class="stringliteral">" DELETE FROM videos WHERE id = OLD.id; END;"</span>);
81 <a name="l00084"></a>00084 <span class="keywordflow">if</span> (ret != 0)
82 <a name="l00085"></a>00085 <span class="keywordflow">goto</span> done;
83 <a name="l00086"></a>00086
84 <a name="l00087"></a>00087 ret = <a class="code" href="lightmediascanner__db__common_8c.html#822cae681398710b63c9af149fdacedb">lms_db_create_trigger_if_not_exists</a>(db,
85 <a name="l00088"></a>00088 <span class="stringliteral">"delete_files_on_videos_deleted "</span>
86 <a name="l00089"></a>00089 <span class="stringliteral">"DELETE ON videos FOR EACH ROW BEGIN "</span>
87 <a name="l00090"></a>00090 <span class="stringliteral">" DELETE FROM files WHERE id = OLD.id; END;"</span>);
88 <a name="l00091"></a>00091
89 <a name="l00092"></a>00092 done:
90 <a name="l00093"></a>00093 <span class="keywordflow">return</span> ret;
91 <a name="l00094"></a>00094 }
92 <a name="l00095"></a>00095
93 <a name="l00096"></a>00096 <span class="keyword">static</span> <a class="code" href="lightmediascanner__db__private_8h.html#31db275bbea4b156c8b4493dac818b73">lms_db_table_updater_t</a> _db_table_updater_videos[] = {
94 <a name="l00097"></a>00097 _db_table_updater_videos_0
95 <a name="l00098"></a>00098 };
96 <a name="l00099"></a>00099
97 <a name="l00100"></a>00100
98 <a name="l00101"></a>00101 <span class="keyword">static</span> <span class="keywordtype">int</span>
99 <a name="l00102"></a>00102 _db_create_table_if_required(sqlite3 *db)
100 <a name="l00103"></a>00103 {
101 <a name="l00104"></a>00104 <span class="keywordflow">return</span> <a class="code" href="lightmediascanner__db__common_8c.html#86b766535f9dc7895da7d0f606201700">lms_db_table_update_if_required</a>(db, <span class="stringliteral">"videos"</span>,
102 <a name="l00105"></a>00105 <a class="code" href="lightmediascanner__utils_8h.html#13a0622cfcc91eec261da4285621bdcc">LMS_ARRAY_SIZE</a>(_db_table_updater_videos),
103 <a name="l00106"></a>00106 _db_table_updater_videos);
104 <a name="l00107"></a>00107 }
105 <a name="l00108"></a>00108
106 <a name="l00123"></a>00123 <a class="code" href="group__LMS__DB.html#gc2e0d2164f90e1ad3c78e05a4d341ec8">lms_db_video_t</a> *
107 <a name="l00124"></a><a class="code" href="group__LMS__DB.html#ga206178e1f883c1bf7a3281f982109b2">00124</a> <a class="code" href="group__LMS__DB.html#ga206178e1f883c1bf7a3281f982109b2">lms_db_video_new</a>(sqlite3 *db)
108 <a name="l00125"></a>00125 {
109 <a name="l00126"></a>00126 <a class="code" href="group__LMS__DB.html#gc2e0d2164f90e1ad3c78e05a4d341ec8">lms_db_video_t</a> *ldv;
110 <a name="l00127"></a>00127 <span class="keywordtype">void</span> *p;
111 <a name="l00128"></a>00128
112 <a name="l00129"></a>00129 <span class="keywordflow">if</span> (<a class="code" href="lightmediascanner__db__common_8c.html#e7a672fa5760bae1a669c737648fe7d3">lms_db_cache_get</a>(&_cache, db, &p) == 0) {
113 <a name="l00130"></a>00130 ldv = p;
114 <a name="l00131"></a>00131 ldv->_references++;
115 <a name="l00132"></a>00132 <span class="keywordflow">return</span> ldv;
116 <a name="l00133"></a>00133 }
117 <a name="l00134"></a>00134
118 <a name="l00135"></a>00135 <span class="keywordflow">if</span> (!db)
119 <a name="l00136"></a>00136 <span class="keywordflow">return</span> NULL;
120 <a name="l00137"></a>00137
121 <a name="l00138"></a>00138 <span class="keywordflow">if</span> (_db_create_table_if_required(db) != 0) {
122 <a name="l00139"></a>00139 fprintf(stderr, <span class="stringliteral">"ERROR: could not create table.\n"</span>);
123 <a name="l00140"></a>00140 <span class="keywordflow">return</span> NULL;
124 <a name="l00141"></a>00141 }
125 <a name="l00142"></a>00142
126 <a name="l00143"></a>00143 ldv = calloc(1, <span class="keyword">sizeof</span>(<a class="code" href="group__LMS__DB.html#gc2e0d2164f90e1ad3c78e05a4d341ec8">lms_db_video_t</a>));
127 <a name="l00144"></a>00144 ldv->_references = 1;
128 <a name="l00145"></a>00145 ldv->db = db;
129 <a name="l00146"></a>00146
130 <a name="l00147"></a>00147 <span class="keywordflow">if</span> (<a class="code" href="lightmediascanner__db__common_8c.html#19b0458b9d7b76370588156e931a9c04">lms_db_cache_add</a>(&_cache, db, ldv) != 0) {
131 <a name="l00148"></a>00148 <a class="code" href="group__LMS__DB.html#g6be7c0922e76acc29542643424cfeac0">lms_db_video_free</a>(ldv);
132 <a name="l00149"></a>00149 <span class="keywordflow">return</span> NULL;
133 <a name="l00150"></a>00150 }
134 <a name="l00151"></a>00151
135 <a name="l00152"></a>00152 <span class="keywordflow">return</span> ldv;
136 <a name="l00153"></a>00153 }
137 <a name="l00154"></a>00154
138 <a name="l00167"></a>00167 <span class="keywordtype">int</span>
139 <a name="l00168"></a><a class="code" href="group__LMS__DB.html#g0ebc0dd37b1c9bcaf7741231a411ade2">00168</a> <a class="code" href="group__LMS__DB.html#g0ebc0dd37b1c9bcaf7741231a411ade2">lms_db_video_start</a>(<a class="code" href="group__LMS__DB.html#gc2e0d2164f90e1ad3c78e05a4d341ec8">lms_db_video_t</a> *ldv)
140 <a name="l00169"></a>00169 {
141 <a name="l00170"></a>00170 <span class="keywordflow">if</span> (!ldv)
142 <a name="l00171"></a>00171 <span class="keywordflow">return</span> -1;
143 <a name="l00172"></a>00172 <span class="keywordflow">if</span> (ldv->_is_started)
144 <a name="l00173"></a>00173 <span class="keywordflow">return</span> 0;
145 <a name="l00174"></a>00174
146 <a name="l00175"></a>00175 ldv->insert = <a class="code" href="lightmediascanner__db__common_8c.html#5fddf47521f83929b0c90a481fa01c5b">lms_db_compile_stmt</a>(ldv->db,
147 <a name="l00176"></a>00176 <span class="stringliteral">"INSERT OR REPLACE INTO videos (id, title, artist) VALUES (?, ?, ?)"</span>);
148 <a name="l00177"></a>00177 <span class="keywordflow">if</span> (!ldv->insert)
149 <a name="l00178"></a>00178 <span class="keywordflow">return</span> -2;
150 <a name="l00179"></a>00179
151 <a name="l00180"></a>00180 ldv->_is_started = 1;
152 <a name="l00181"></a>00181 <span class="keywordflow">return</span> 0;
153 <a name="l00182"></a>00182 }
154 <a name="l00183"></a>00183
155 <a name="l00196"></a>00196 <span class="keywordtype">int</span>
156 <a name="l00197"></a><a class="code" href="group__LMS__DB.html#g6be7c0922e76acc29542643424cfeac0">00197</a> <a class="code" href="group__LMS__DB.html#g6be7c0922e76acc29542643424cfeac0">lms_db_video_free</a>(<a class="code" href="group__LMS__DB.html#gc2e0d2164f90e1ad3c78e05a4d341ec8">lms_db_video_t</a> *ldv)
157 <a name="l00198"></a>00198 {
158 <a name="l00199"></a>00199 <span class="keywordtype">int</span> r;
159 <a name="l00200"></a>00200
160 <a name="l00201"></a>00201 <span class="keywordflow">if</span> (!ldv)
161 <a name="l00202"></a>00202 <span class="keywordflow">return</span> -1;
162 <a name="l00203"></a>00203 <span class="keywordflow">if</span> (ldv->_references == 0) {
163 <a name="l00204"></a>00204 fprintf(stderr, <span class="stringliteral">"ERROR: over-called lms_db_video_free(%p)\n"</span>, ldv);
164 <a name="l00205"></a>00205 <span class="keywordflow">return</span> -1;
165 <a name="l00206"></a>00206 }
166 <a name="l00207"></a>00207
167 <a name="l00208"></a>00208 ldv->_references--;
168 <a name="l00209"></a>00209 <span class="keywordflow">if</span> (ldv->_references > 0)
169 <a name="l00210"></a>00210 <span class="keywordflow">return</span> 0;
170 <a name="l00211"></a>00211
171 <a name="l00212"></a>00212 <span class="keywordflow">if</span> (ldv->insert)
172 <a name="l00213"></a>00213 <a class="code" href="lightmediascanner__db__common_8c.html#32110a4825e598ca6df329f55b0b62b5">lms_db_finalize_stmt</a>(ldv->insert, <span class="stringliteral">"insert"</span>);
173 <a name="l00214"></a>00214
174 <a name="l00215"></a>00215 r = <a class="code" href="lightmediascanner__db__common_8c.html#296c81e4c64be1c7935ef31038aeb2c0">lms_db_cache_del</a>(&_cache, ldv->db, ldv);
175 <a name="l00216"></a>00216 free(ldv);
176 <a name="l00217"></a>00217
177 <a name="l00218"></a>00218 <span class="keywordflow">return</span> r;
178 <a name="l00219"></a>00219 }
179 <a name="l00220"></a>00220
180 <a name="l00221"></a>00221 <span class="keyword">static</span> <span class="keywordtype">int</span>
181 <a name="l00222"></a>00222 _db_insert(<a class="code" href="group__LMS__DB.html#gc2e0d2164f90e1ad3c78e05a4d341ec8">lms_db_video_t</a> *ldv, <span class="keyword">const</span> <span class="keyword">struct</span> <a class="code" href="structlms__video__info.html">lms_video_info</a> *info)
182 <a name="l00223"></a>00223 {
183 <a name="l00224"></a>00224 sqlite3_stmt *stmt;
184 <a name="l00225"></a>00225 <span class="keywordtype">int</span> r, ret;
185 <a name="l00226"></a>00226
186 <a name="l00227"></a>00227 stmt = ldv->insert;
187 <a name="l00228"></a>00228
188 <a name="l00229"></a>00229 ret = <a class="code" href="lightmediascanner__db__common_8c.html#f2fe78bc45dc33d843313a846db5ce7c">lms_db_bind_int64</a>(stmt, 1, info-><a class="code" href="structlms__video__info.html#12b5bc5f8b13bdcb3ee1e919a1e05822">id</a>);
189 <a name="l00230"></a>00230 <span class="keywordflow">if</span> (ret != 0)
190 <a name="l00231"></a>00231 <span class="keywordflow">goto</span> done;
191 <a name="l00232"></a>00232
192 <a name="l00233"></a>00233 ret = <a class="code" href="lightmediascanner__db__common_8c.html#88c461ae88da3eb47987c5a0b15c5888">lms_db_bind_text</a>(stmt, 2, info-><a class="code" href="structlms__video__info.html#f3b8a8168ec317daef65da3b06f72bc0">title</a>.<a class="code" href="structlms__string__size.html#5f4844463b193dadb2286e69200ce8a7">str</a>, info-><a class="code" href="structlms__video__info.html#f3b8a8168ec317daef65da3b06f72bc0">title</a>.<a class="code" href="structlms__string__size.html#fc37b712d71c2010e655bbd4f0a22e96">len</a>);
193 <a name="l00234"></a>00234 <span class="keywordflow">if</span> (ret != 0)
194 <a name="l00235"></a>00235 <span class="keywordflow">goto</span> done;
195 <a name="l00236"></a>00236
196 <a name="l00237"></a>00237 ret = <a class="code" href="lightmediascanner__db__common_8c.html#88c461ae88da3eb47987c5a0b15c5888">lms_db_bind_text</a>(stmt, 3, info-><a class="code" href="structlms__video__info.html#c0bfe0cf4fe29e3c24a6df4248c7640e">artist</a>.<a class="code" href="structlms__string__size.html#5f4844463b193dadb2286e69200ce8a7">str</a>, info-><a class="code" href="structlms__video__info.html#c0bfe0cf4fe29e3c24a6df4248c7640e">artist</a>.<a class="code" href="structlms__string__size.html#fc37b712d71c2010e655bbd4f0a22e96">len</a>);
197 <a name="l00238"></a>00238 <span class="keywordflow">if</span> (ret != 0)
198 <a name="l00239"></a>00239 <span class="keywordflow">goto</span> done;
199 <a name="l00240"></a>00240
200 <a name="l00241"></a>00241 r = sqlite3_step(stmt);
201 <a name="l00242"></a>00242 <span class="keywordflow">if</span> (r != SQLITE_DONE) {
202 <a name="l00243"></a>00243 fprintf(stderr, <span class="stringliteral">"ERROR: could not insert video info: %s\n"</span>,
203 <a name="l00244"></a>00244 sqlite3_errmsg(ldv->db));
204 <a name="l00245"></a>00245 ret = -4;
205 <a name="l00246"></a>00246 <span class="keywordflow">goto</span> done;
206 <a name="l00247"></a>00247 }
207 <a name="l00248"></a>00248
208 <a name="l00249"></a>00249 ret = 0;
209 <a name="l00250"></a>00250
210 <a name="l00251"></a>00251 done:
211 <a name="l00252"></a>00252 <a class="code" href="lightmediascanner__db__common_8c.html#226c6f7ab2e7923b747b7090357ea419">lms_db_reset_stmt</a>(stmt);
212 <a name="l00253"></a>00253
213 <a name="l00254"></a>00254 <span class="keywordflow">return</span> ret;
214 <a name="l00255"></a>00255 }
215 <a name="l00256"></a>00256
216 <a name="l00268"></a>00268 <span class="keywordtype">int</span>
217 <a name="l00269"></a><a class="code" href="lightmediascanner__db__video_8c.html#700adc9c25a70e5cd1d77812324b748e">00269</a> <a class="code" href="group__LMS__DB.html#gb07d1e7fe962486b6e9d00581e8aac19">lms_db_video_add</a>(<a class="code" href="group__LMS__DB.html#gc2e0d2164f90e1ad3c78e05a4d341ec8">lms_db_video_t</a> *ldv, <span class="keyword">struct</span> <a class="code" href="structlms__video__info.html">lms_video_info</a> *info)
218 <a name="l00270"></a>00270 {
219 <a name="l00271"></a>00271 <span class="keywordflow">if</span> (!ldv)
220 <a name="l00272"></a>00272 <span class="keywordflow">return</span> -1;
221 <a name="l00273"></a>00273 <span class="keywordflow">if</span> (!info)
222 <a name="l00274"></a>00274 <span class="keywordflow">return</span> -2;
223 <a name="l00275"></a>00275 <span class="keywordflow">if</span> (info-><a class="code" href="structlms__video__info.html#12b5bc5f8b13bdcb3ee1e919a1e05822">id</a> < 1)
224 <a name="l00276"></a>00276 <span class="keywordflow">return</span> -3;
225 <a name="l00277"></a>00277
226 <a name="l00278"></a>00278 <span class="keywordflow">return</span> _db_insert(ldv, info);
227 <a name="l00279"></a>00279 }
229 <hr size="1"><address style="text-align: right;"><small>Generated on Sun Oct 5 12:24:53 2008 for Light Media Scanner by
230 <a href="http://www.doxygen.org/index.html">
231 <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
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