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
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
|
#include "db.h"
#include "frame.pb.h"
#include <string>
#include <unordered_set>
using namespace std;
DB::DB(const string &filename)
{
int ret = sqlite3_open(filename.c_str(), &db);
if (ret != SQLITE_OK) {
fprintf(stderr, "%s: %s\n", filename.c_str(), sqlite3_errmsg(db));
abort();
}
// Set an effectively infinite timeout for waiting for write locks;
// if we get SQLITE_LOCKED, we just exit out, so this is much better.
ret = sqlite3_busy_timeout(db, 3600000);
if (ret != SQLITE_OK) {
fprintf(stderr, "sqlite3_busy_timeout: %s\n", sqlite3_errmsg(db));
abort();
}
sqlite3_exec(db, R"(
CREATE TABLE IF NOT EXISTS state (state BLOB);
)",
nullptr, nullptr, nullptr); // Ignore errors.
sqlite3_exec(db, "CREATE UNIQUE INDEX only_one_state ON state (1);", nullptr, nullptr, nullptr); // Ignore errors.
sqlite3_exec(db, R"(
CREATE TABLE IF NOT EXISTS settings (settings BLOB);
)",
nullptr, nullptr, nullptr); // Ignore errors.
sqlite3_exec(db, "CREATE UNIQUE INDEX only_one_settings ON settings (1);", nullptr, nullptr, nullptr); // Ignore errors.
sqlite3_exec(db, R"(
DROP TABLE file;
)",
nullptr, nullptr, nullptr); // Ignore errors.
sqlite3_exec(db, R"(
DROP TABLE frame;
)",
nullptr, nullptr, nullptr); // Ignore errors.
sqlite3_exec(db, R"(
CREATE TABLE IF NOT EXISTS filev2 (
file INTEGER NOT NULL PRIMARY KEY,
filename VARCHAR NOT NULL UNIQUE,
size BIGINT NOT NULL,
frames BLOB NOT NULL
);
)",
nullptr, nullptr, nullptr); // Ignore errors.
sqlite3_exec(db, "PRAGMA journal_mode=WAL", nullptr, nullptr, nullptr); // Ignore errors.
sqlite3_exec(db, "PRAGMA synchronous=NORMAL", nullptr, nullptr, nullptr); // Ignore errors.
}
StateProto DB::get_state()
{
StateProto state;
sqlite3_stmt *stmt;
int ret = sqlite3_prepare_v2(db, "SELECT state FROM state", -1, &stmt, 0);
if (ret != SQLITE_OK) {
fprintf(stderr, "SELECT prepare: %s\n", sqlite3_errmsg(db));
abort();
}
ret = sqlite3_step(stmt);
if (ret == SQLITE_ROW) {
bool ok = state.ParseFromArray(sqlite3_column_blob(stmt, 0), sqlite3_column_bytes(stmt, 0));
if (!ok) {
fprintf(stderr, "State in database is corrupted!\n");
abort();
}
} else if (ret != SQLITE_DONE) {
fprintf(stderr, "SELECT step: %s\n", sqlite3_errmsg(db));
abort();
}
ret = sqlite3_finalize(stmt);
if (ret != SQLITE_OK) {
fprintf(stderr, "SELECT finalize: %s\n", sqlite3_errmsg(db));
abort();
}
return state;
}
void DB::store_state(const StateProto &state)
{
string serialized;
state.SerializeToString(&serialized);
int ret = sqlite3_exec(db, "BEGIN", nullptr, nullptr, nullptr);
if (ret != SQLITE_OK) {
fprintf(stderr, "BEGIN: %s\n", sqlite3_errmsg(db));
abort();
}
sqlite3_stmt *stmt;
ret = sqlite3_prepare_v2(db, "REPLACE INTO state VALUES (?)", -1, &stmt, 0);
if (ret != SQLITE_OK) {
fprintf(stderr, "REPLACE prepare: %s\n", sqlite3_errmsg(db));
abort();
}
sqlite3_bind_blob(stmt, 1, serialized.data(), serialized.size(), SQLITE_STATIC);
ret = sqlite3_step(stmt);
if (ret == SQLITE_ROW) {
fprintf(stderr, "REPLACE step: %s\n", sqlite3_errmsg(db));
abort();
}
ret = sqlite3_finalize(stmt);
if (ret != SQLITE_OK) {
fprintf(stderr, "REPLACE finalize: %s\n", sqlite3_errmsg(db));
abort();
}
ret = sqlite3_exec(db, "COMMIT", nullptr, nullptr, nullptr);
if (ret != SQLITE_OK) {
fprintf(stderr, "COMMIT: %s\n", sqlite3_errmsg(db));
abort();
}
}
SettingsProto DB::get_settings()
{
SettingsProto settings;
sqlite3_stmt *stmt;
int ret = sqlite3_prepare_v2(db, "SELECT settings FROM settings", -1, &stmt, 0);
if (ret != SQLITE_OK) {
fprintf(stderr, "SELECT prepare: %s\n", sqlite3_errmsg(db));
abort();
}
ret = sqlite3_step(stmt);
if (ret == SQLITE_ROW) {
bool ok = settings.ParseFromArray(sqlite3_column_blob(stmt, 0), sqlite3_column_bytes(stmt, 0));
if (!ok) {
fprintf(stderr, "State in database is corrupted!\n");
abort();
}
} else if (ret != SQLITE_DONE) {
fprintf(stderr, "SELECT step: %s\n", sqlite3_errmsg(db));
abort();
}
ret = sqlite3_finalize(stmt);
if (ret != SQLITE_OK) {
fprintf(stderr, "SELECT finalize: %s\n", sqlite3_errmsg(db));
abort();
}
return settings;
}
void DB::store_settings(const SettingsProto &settings)
{
string serialized;
settings.SerializeToString(&serialized);
int ret = sqlite3_exec(db, "BEGIN", nullptr, nullptr, nullptr);
if (ret != SQLITE_OK) {
fprintf(stderr, "BEGIN: %s\n", sqlite3_errmsg(db));
abort();
}
sqlite3_stmt *stmt;
ret = sqlite3_prepare_v2(db, "REPLACE INTO settings VALUES (?)", -1, &stmt, 0);
if (ret != SQLITE_OK) {
fprintf(stderr, "REPLACE prepare: %s\n", sqlite3_errmsg(db));
abort();
}
sqlite3_bind_blob(stmt, 1, serialized.data(), serialized.size(), SQLITE_STATIC);
ret = sqlite3_step(stmt);
if (ret == SQLITE_ROW) {
fprintf(stderr, "REPLACE step: %s\n", sqlite3_errmsg(db));
abort();
}
ret = sqlite3_finalize(stmt);
if (ret != SQLITE_OK) {
fprintf(stderr, "REPLACE finalize: %s\n", sqlite3_errmsg(db));
abort();
}
ret = sqlite3_exec(db, "COMMIT", nullptr, nullptr, nullptr);
if (ret != SQLITE_OK) {
fprintf(stderr, "COMMIT: %s\n", sqlite3_errmsg(db));
abort();
}
}
vector<DB::FrameOnDiskAndStreamIdx> DB::load_frame_file(const string &filename, size_t size, unsigned filename_idx)
{
FileContentsProto file_contents;
sqlite3_stmt *stmt;
int ret = sqlite3_prepare_v2(db, "SELECT frames FROM filev2 WHERE filename=? AND size=?", -1, &stmt, 0);
if (ret != SQLITE_OK) {
fprintf(stderr, "SELECT prepare: %s\n", sqlite3_errmsg(db));
abort();
}
sqlite3_bind_text(stmt, 1, filename.data(), filename.size(), SQLITE_STATIC);
sqlite3_bind_int64(stmt, 2, size);
ret = sqlite3_step(stmt);
if (ret == SQLITE_ROW) {
bool ok = file_contents.ParseFromArray(sqlite3_column_blob(stmt, 0), sqlite3_column_bytes(stmt, 0));
if (!ok) {
fprintf(stderr, "Frame list in database is corrupted!\n");
abort();
}
} else if (ret != SQLITE_DONE) {
fprintf(stderr, "SELECT step: %s\n", sqlite3_errmsg(db));
abort();
}
ret = sqlite3_finalize(stmt);
if (ret != SQLITE_OK) {
fprintf(stderr, "SELECT finalize: %s\n", sqlite3_errmsg(db));
abort();
}
vector<FrameOnDiskAndStreamIdx> frames;
for (const StreamContentsProto &stream : file_contents.stream()) {
FrameOnDiskAndStreamIdx frame;
frame.stream_idx = stream.stream_idx();
for (int i = 0; i < stream.pts_size(); ++i) {
frame.frame.filename_idx = filename_idx;
frame.frame.pts = stream.pts(i);
frame.frame.offset = stream.offset(i);
frame.frame.size = stream.file_size(i);
if (i < stream.audio_size_size()) {
frame.frame.audio_size = stream.audio_size(i);
} else {
frame.frame.audio_size = 0;
}
frames.push_back(frame);
}
}
return frames;
}
void DB::store_frame_file(const string &filename, size_t size, const vector<FrameOnDiskAndStreamIdx> &frames)
{
int ret = sqlite3_exec(db, "BEGIN", nullptr, nullptr, nullptr);
if (ret != SQLITE_OK) {
fprintf(stderr, "BEGIN: %s\n", sqlite3_errmsg(db));
abort();
}
// Delete any existing instances with this filename.
sqlite3_stmt *stmt;
// Create the protobuf blob for the new row.
FileContentsProto file_contents;
unordered_set<unsigned> seen_stream_idx; // Usually only one.
for (const FrameOnDiskAndStreamIdx &frame : frames) {
seen_stream_idx.insert(frame.stream_idx);
}
for (unsigned stream_idx : seen_stream_idx) {
StreamContentsProto *stream = file_contents.add_stream();
stream->set_stream_idx(stream_idx);
stream->mutable_pts()->Reserve(frames.size());
stream->mutable_offset()->Reserve(frames.size());
stream->mutable_file_size()->Reserve(frames.size());
stream->mutable_audio_size()->Reserve(frames.size());
for (const FrameOnDiskAndStreamIdx &frame : frames) {
if (frame.stream_idx != stream_idx) {
continue;
}
stream->add_pts(frame.frame.pts);
stream->add_offset(frame.frame.offset);
stream->add_file_size(frame.frame.size);
stream->add_audio_size(frame.frame.audio_size);
}
}
string serialized;
file_contents.SerializeToString(&serialized);
// Insert the new row.
ret = sqlite3_prepare_v2(db, "REPLACE INTO filev2 (filename, size, frames) VALUES (?, ?, ?)", -1, &stmt, 0);
if (ret != SQLITE_OK) {
fprintf(stderr, "INSERT prepare: %s\n", sqlite3_errmsg(db));
abort();
}
sqlite3_bind_text(stmt, 1, filename.data(), filename.size(), SQLITE_STATIC);
sqlite3_bind_int64(stmt, 2, size);
sqlite3_bind_blob(stmt, 3, serialized.data(), serialized.size(), SQLITE_STATIC);
ret = sqlite3_step(stmt);
if (ret == SQLITE_ROW) {
fprintf(stderr, "REPLACE step: %s\n", sqlite3_errmsg(db));
abort();
}
ret = sqlite3_finalize(stmt);
if (ret != SQLITE_OK) {
fprintf(stderr, "REPLACE finalize: %s\n", sqlite3_errmsg(db));
abort();
}
// Commit.
ret = sqlite3_exec(db, "COMMIT", nullptr, nullptr, nullptr);
if (ret != SQLITE_OK) {
fprintf(stderr, "COMMIT: %s\n", sqlite3_errmsg(db));
abort();
}
}
void DB::clean_unused_frame_files(const vector<string> &used_filenames)
{
int ret = sqlite3_exec(db, "BEGIN", nullptr, nullptr, nullptr);
if (ret != SQLITE_OK) {
fprintf(stderr, "BEGIN: %s\n", sqlite3_errmsg(db));
abort();
}
ret = sqlite3_exec(db, R"(
CREATE TEMPORARY TABLE used_filenames ( filename VARCHAR NOT NULL PRIMARY KEY )
)",
nullptr, nullptr, nullptr);
if (ret != SQLITE_OK) {
fprintf(stderr, "CREATE TEMPORARY TABLE: %s\n", sqlite3_errmsg(db));
abort();
}
// Insert the new rows.
sqlite3_stmt *stmt;
ret = sqlite3_prepare_v2(db, "INSERT INTO used_filenames (filename) VALUES (?)", -1, &stmt, 0);
if (ret != SQLITE_OK) {
fprintf(stderr, "INSERT prepare: %s\n", sqlite3_errmsg(db));
abort();
}
for (const string &filename : used_filenames) {
sqlite3_bind_text(stmt, 1, filename.data(), filename.size(), SQLITE_STATIC);
ret = sqlite3_step(stmt);
if (ret == SQLITE_ROW) {
fprintf(stderr, "INSERT step: %s\n", sqlite3_errmsg(db));
abort();
}
ret = sqlite3_reset(stmt);
if (ret == SQLITE_ROW) {
fprintf(stderr, "INSERT reset: %s\n", sqlite3_errmsg(db));
abort();
}
}
ret = sqlite3_finalize(stmt);
if (ret != SQLITE_OK) {
fprintf(stderr, "INSERT finalize: %s\n", sqlite3_errmsg(db));
abort();
}
ret = sqlite3_exec(db, R"(
DELETE FROM filev2 WHERE filename NOT IN ( SELECT filename FROM used_filenames )
)",
nullptr, nullptr, nullptr);
if (ret != SQLITE_OK) {
fprintf(stderr, "DELETE: %s\n", sqlite3_errmsg(db));
abort();
}
ret = sqlite3_exec(db, R"(
DROP TABLE used_filenames
)",
nullptr, nullptr, nullptr);
if (ret != SQLITE_OK) {
fprintf(stderr, "DROP TABLE: %s\n", sqlite3_errmsg(db));
abort();
}
// Commit.
ret = sqlite3_exec(db, "COMMIT", nullptr, nullptr, nullptr);
if (ret != SQLITE_OK) {
fprintf(stderr, "COMMIT: %s\n", sqlite3_errmsg(db));
abort();
}
}
|
