FFmpeg: libavutil/log.c Source File

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libavutil

log.c

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1 /*

2 * log functions

4 *

5 * This file is part of FFmpeg.

6 *

7 * FFmpeg is free software; you can redistribute it and/or

8 * modify it under the terms of the GNU Lesser General Public

9 * License as published by the Free Software Foundation; either

10 * version 2.1 of the License, or (at your option) any later version.

11 *

12 * FFmpeg is distributed in the hope that it will be useful,

13 * but WITHOUT ANY WARRANTY; without even the implied warranty of

14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

15 * Lesser General Public License for more details.

16 *

17 * You should have received a copy of the GNU Lesser General Public

18 * License along with FFmpeg; if not, write to the Free Software

19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

20 */

22 /**

23 * @file

24 * logging functions

25 */

27 #include "config.h"

29 #if HAVE_UNISTD_H

30 #include <unistd.h>

31 #endif

32 #if HAVE_IO_H

33 #include <io.h>

34 #endif

35 #include <stdarg.h>

36 #include <stdlib.h>

37 #include "avutil.h"

38 #include "bprint.h"

39 #include "common.h"

40 #include "internal.h"

41 #include "log.h"

43 #if HAVE_PTHREADS

44 #include <pthread.h>

45 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;

46 #endif

48 #define LINE_SZ 1024

50 static int av_log_level = AV_LOG_INFO;

51 static int flags;

53 #if defined(_WIN32) && !defined(__MINGW32CE__) && HAVE_SETCONSOLETEXTATTRIBUTE

54 #include <windows.h>

55 static const uint8_t color[16 + AV_CLASS_CATEGORY_NB] = {

56 [AV_LOG_PANIC /8] = 12,

57 [AV_LOG_FATAL /8] = 12,

58 [AV_LOG_ERROR /8] = 12,

59 [AV_LOG_WARNING/8] = 14,

60 [AV_LOG_INFO /8] = 7,

61 [AV_LOG_VERBOSE/8] = 10,

62 [AV_LOG_DEBUG /8] = 10,

63 [16+AV_CLASS_CATEGORY_NA ] = 7,

64 [16+AV_CLASS_CATEGORY_INPUT ] = 13,

65 [16+AV_CLASS_CATEGORY_OUTPUT ] = 5,

66 [16+AV_CLASS_CATEGORY_MUXER ] = 13,

67 [16+AV_CLASS_CATEGORY_DEMUXER ] = 5,

68 [16+AV_CLASS_CATEGORY_ENCODER ] = 11,

69 [16+AV_CLASS_CATEGORY_DECODER ] = 3,

70 [16+AV_CLASS_CATEGORY_FILTER ] = 10,

71 [16+AV_CLASS_CATEGORY_BITSTREAM_FILTER] = 9,

72 [16+AV_CLASS_CATEGORY_SWSCALER ] = 7,

73 [16+AV_CLASS_CATEGORY_SWRESAMPLER ] = 7,

74 [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT ] = 13,

75 [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT ] = 5,

76 [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT ] = 13,

77 [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT ] = 5,

78 [16+AV_CLASS_CATEGORY_DEVICE_OUTPUT ] = 13,

79 [16+AV_CLASS_CATEGORY_DEVICE_INPUT ] = 5,

80 };

82 static int16_t background, attr_orig;

83 static HANDLE con;

84 #else

86 static const uint32_t color[16 + AV_CLASS_CATEGORY_NB] = {

87 [AV_LOG_PANIC /8] = 52 << 16 | 196 << 8 | 0x41,

88 [AV_LOG_FATAL /8] = 208 << 8 | 0x41,

89 [AV_LOG_ERROR /8] = 196 << 8 | 0x11,

90 [AV_LOG_WARNING/8] = 226 << 8 | 0x03,

91 [AV_LOG_INFO /8] = 253 << 8 | 0x09,

92 [AV_LOG_VERBOSE/8] = 40 << 8 | 0x02,

93 [AV_LOG_DEBUG /8] = 34 << 8 | 0x02,

94 [16+AV_CLASS_CATEGORY_NA ] = 250 << 8 | 0x09,

95 [16+AV_CLASS_CATEGORY_INPUT ] = 219 << 8 | 0x15,

96 [16+AV_CLASS_CATEGORY_OUTPUT ] = 201 << 8 | 0x05,

97 [16+AV_CLASS_CATEGORY_MUXER ] = 213 << 8 | 0x15,

98 [16+AV_CLASS_CATEGORY_DEMUXER ] = 207 << 8 | 0x05,

99 [16+AV_CLASS_CATEGORY_ENCODER ] = 51 << 8 | 0x16,

100 [16+AV_CLASS_CATEGORY_DECODER ] = 39 << 8 | 0x06,

101 [16+AV_CLASS_CATEGORY_FILTER ] = 155 << 8 | 0x12,

102 [16+AV_CLASS_CATEGORY_BITSTREAM_FILTER] = 192 << 8 | 0x14,

103 [16+AV_CLASS_CATEGORY_SWSCALER ] = 153 << 8 | 0x14,

104 [16+AV_CLASS_CATEGORY_SWRESAMPLER ] = 147 << 8 | 0x14,

105 [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT ] = 213 << 8 | 0x15,

106 [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT ] = 207 << 8 | 0x05,

107 [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT ] = 213 << 8 | 0x15,

108 [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT ] = 207 << 8 | 0x05,

109 [16+AV_CLASS_CATEGORY_DEVICE_OUTPUT ] = 213 << 8 | 0x15,

110 [16+AV_CLASS_CATEGORY_DEVICE_INPUT ] = 207 << 8 | 0x05,

111 };

112

113 #endif

114 static int use_color = -1;

115

116 static void check_color_terminal(void)

117 {

118 #if defined(_WIN32) && !defined(__MINGW32CE__) && HAVE_SETCONSOLETEXTATTRIBUTE

119 CONSOLE_SCREEN_BUFFER_INFO con_info;

120 con = GetStdHandle(STD_ERROR_HANDLE);

121 use_color = (con != INVALID_HANDLE_VALUE) && !getenv("NO_COLOR") &&

122 !getenv("AV_LOG_FORCE_NOCOLOR");

123 if (use_color) {

124 GetConsoleScreenBufferInfo(con, &con_info);

125 attr_orig = con_info.wAttributes;

126 background = attr_orig & 0xF0;

127 }

128 #elif HAVE_ISATTY

129 char *term = getenv("TERM");

130 use_color = !getenv("NO_COLOR") && !getenv("AV_LOG_FORCE_NOCOLOR") &&

131 (getenv("TERM") && isatty(2) || getenv("AV_LOG_FORCE_COLOR"));

132 if ( getenv("AV_LOG_FORCE_256COLOR")

133 || (term && strstr(term, "256color")))

134 use_color *= 256;

135 #else

136 use_color = getenv("AV_LOG_FORCE_COLOR") && !getenv("NO_COLOR") &&

137 !getenv("AV_LOG_FORCE_NOCOLOR");

138 #endif

139 }

140

141 static void colored_fputs(int level, int tint, const char *str)

142 {

143 int local_use_color;

144 if (!*str)

145 return;

146

147 if (use_color < 0)

148 check_color_terminal();

149

150 if (level == AV_LOG_INFO/8) local_use_color = 0;

151 else local_use_color = use_color;

152

153 #if defined(_WIN32) && !defined(__MINGW32CE__) && HAVE_SETCONSOLETEXTATTRIBUTE

154 if (local_use_color)

155 SetConsoleTextAttribute(con, background | color[level]);

156 fputs(str, stderr);

157 if (local_use_color)

158 SetConsoleTextAttribute(con, attr_orig);

159 #else

160 if (local_use_color == 1) {

161 fprintf(stderr,

162 "033円[%d;3%dm%s033円[0m",

163 (color[level] >> 4) & 15,

164 color[level] & 15,

165 str);

166 } else if (tint && use_color == 256) {

167 fprintf(stderr,

168 "033円[48;5;%dm033円[38;5;%dm%s033円[0m",

169 (color[level] >> 16) & 0xff,

170 tint,

171 str);

172 } else if (local_use_color == 256) {

173 fprintf(stderr,

174 "033円[48;5;%dm033円[38;5;%dm%s033円[0m",

175 (color[level] >> 16) & 0xff,

176 (color[level] >> 8) & 0xff,

177 str);

178 } else

179 fputs(str, stderr);

180 #endif

181

182 }

183

184 const char *av_default_item_name(void *ptr)

185 {

186 return (*(AVClass **) ptr)->class_name;

187 }

188

189 AVClassCategory av_default_get_category(void *ptr)

190 {

191 return (*(AVClass **) ptr)->category;

192 }

193

194 static void sanitize(uint8_t *line){

195 while(*line){

196 if(*line < 0x08 || (*line > 0x0D && *line < 0x20))

197 *line='?';

198 line++;

199 }

200 }

201

202 static int get_category(void *ptr){

203 AVClass *avc = *(AVClass **) ptr;

204 if( !avc

205 || (avc->version&0xFF)<100

206 || avc->version < (51 << 16 | 59 << 8)

207 || avc->category >= AV_CLASS_CATEGORY_NB) return AV_CLASS_CATEGORY_NA + 16;

208

209 if(avc->get_category)

210 return avc->get_category(ptr) + 16;

211

212 return avc->category + 16;

213 }

214

215 static const char *get_level_str(int level)

216 {

217 switch (level) {

218 case AV_LOG_QUIET:

219 return "quiet";

220 case AV_LOG_DEBUG:

221 return "debug";

222 case AV_LOG_VERBOSE:

223 return "verbose";

224 case AV_LOG_INFO:

225 return "info";

226 case AV_LOG_WARNING:

227 return "warning";

228 case AV_LOG_ERROR:

229 return "error";

230 case AV_LOG_FATAL:

231 return "fatal";

232 case AV_LOG_PANIC:

233 return "panic";

234 default:

235 return "";

236 }

237 }

238

239 static void format_line(void *avcl, int level, const char *fmt, va_list vl,

240 AVBPrint part[4], int *print_prefix, int type[2])

241 {

242 AVClass* avc = avcl ? *(AVClass **) avcl : NULL;

243 av_bprint_init(part+0, 0, 1);

244 av_bprint_init(part+1, 0, 1);

245 av_bprint_init(part+2, 0, 1);

246 av_bprint_init(part+3, 0, 65536);

247

248 if(type) type[0] = type[1] = AV_CLASS_CATEGORY_NA + 16;

249 if (*print_prefix && avc) {

250 if (avc->parent_log_context_offset) {

251 AVClass** parent = *(AVClass ***) (((uint8_t *) avcl) +

252 avc->parent_log_context_offset);

253 if (parent && *parent) {

254 av_bprintf(part+0, "[%s @ %p] ",

255 (*parent)->item_name(parent), parent);

256 if(type) type[0] = get_category(parent);

257 }

258 }

259 av_bprintf(part+1, "[%s @ %p] ",

260 avc->item_name(avcl), avcl);

261 if(type) type[1] = get_category(avcl);

262

263 if (flags & AV_LOG_PRINT_LEVEL)

264 av_bprintf(part+2, "[%s] ", get_level_str(level));

265 }

266

267 av_vbprintf(part+3, fmt, vl);

268

269 if(*part[0].str || *part[1].str || *part[2].str || *part[3].str) {

270 char lastc = part[3].len && part[3].len <= part[3].size ? part[3].str[part[3].len - 1] : 0;

271 *print_prefix = lastc == '\n' || lastc == '\r';

272 }

273 }

274

275 void av_log_format_line(void *ptr, int level, const char *fmt, va_list vl,

276 char *line, int line_size, int *print_prefix)

277 {

278 AVBPrint part[4];

279 format_line(ptr, level, fmt, vl, part, print_prefix, NULL);

280 snprintf(line, line_size, "%s%s%s%s", part[0].str, part[1].str, part[2].str, part[3].str);

281 av_bprint_finalize(part+3, NULL);

282 }

283

284 void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)

285 {

286 static int print_prefix = 1;

287 static int count;

288 static char prev[LINE_SZ];

289 AVBPrint part[4];

290 char line[LINE_SZ];

291 static int is_atty;

292 int type[2];

293 unsigned tint = 0;

294

295 if (level >= 0) {

296 tint = level & 0xff00;

297 level &= 0xff;

298 }

299

300 if (level > av_log_level)

301 return;

302 #if HAVE_PTHREADS

303 pthread_mutex_lock(&mutex);

304 #endif

305

306 format_line(ptr, level, fmt, vl, part, &print_prefix, type);

307 snprintf(line, sizeof(line), "%s%s%s%s", part[0].str, part[1].str, part[2].str, part[3].str);

308

309 #if HAVE_ISATTY

310 if (!is_atty)

311 is_atty = isatty(2) ? 1 : -1;

312 #endif

313

314 if (print_prefix && (flags & AV_LOG_SKIP_REPEATED) && !strcmp(line, prev) &&

315 *line && line[strlen(line) - 1] != '\r'){

316 count++;

317 if (is_atty == 1)

318 fprintf(stderr, " Last message repeated %d times\r", count);

319 goto end;

320 }

321 if (count > 0) {

322 fprintf(stderr, " Last message repeated %d times\n", count);

323 count = 0;

324 }

325 strcpy(prev, line);

326 sanitize(part[0].str);

327 colored_fputs(type[0], 0, part[0].str);

328 sanitize(part[1].str);

329 colored_fputs(type[1], 0, part[1].str);

330 sanitize(part[2].str);

331 colored_fputs(av_clip(level >> 3, 0, 6), tint >> 8, part[2].str);

332 sanitize(part[3].str);

333 colored_fputs(av_clip(level >> 3, 0, 6), tint >> 8, part[3].str);

334 end:

335 av_bprint_finalize(part+3, NULL);

336 #if HAVE_PTHREADS

337 pthread_mutex_unlock(&mutex);

338 #endif

339 }

340

341 static void (*av_log_callback)(void*, int, const char*, va_list) =

342 av_log_default_callback;

343

344 void av_log(void* avcl, int level, const char *fmt, ...)

345 {

346 AVClass* avc = avcl ? *(AVClass **) avcl : NULL;

347 va_list vl;

348 va_start(vl, fmt);

349 if (avc && avc->version >= (50 << 16 | 15 << 8 | 2) &&

350 avc->log_level_offset_offset && level >= AV_LOG_FATAL)

351 level += *(int *) (((uint8_t *) avcl) + avc->log_level_offset_offset);

352 av_vlog(avcl, level, fmt, vl);

353 va_end(vl);

354 }

355

356 void av_vlog(void* avcl, int level, const char *fmt, va_list vl)

357 {

358 void (*log_callback)(void*, int, const char*, va_list) = av_log_callback;

359 if (log_callback)

360 log_callback(avcl, level, fmt, vl);

361 }

362

363 int av_log_get_level(void)

364 {

365 return av_log_level;

366 }

367

368 void av_log_set_level(int level)

369 {

370 av_log_level = level;

371 }

372

373 void av_log_set_flags(int arg)

374 {

375 flags = arg;

376 }

377

378 int av_log_get_flags(void)

379 {

380 return flags;

381 }

382

383 void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))

384 {

385 av_log_callback = callback;

386 }

387

388 static void missing_feature_sample(int sample, void *avc, const char *msg,

389 va_list argument_list)

390 {

391 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);

392 av_log(avc, AV_LOG_WARNING, " is not implemented. Update your FFmpeg "

393 "version to the newest one from Git. If the problem still "

394 "occurs, it means that your file has a feature which has not "

395 "been implemented.\n");

396 if (sample)

397 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "

398 "of this file to ftp://upload.ffmpeg.org/incoming/ "

399 "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");

400 }

401

402 void avpriv_request_sample(void *avc, const char *msg, ...)

403 {

404 va_list argument_list;

405

406 va_start(argument_list, msg);

407 missing_feature_sample(1, avc, msg, argument_list);

408 va_end(argument_list);

409 }

410

411 void avpriv_report_missing_feature(void *avc, const char *msg, ...)

412 {

413 va_list argument_list;

414

415 va_start(argument_list, msg);

416 missing_feature_sample(0, avc, msg, argument_list);

417 va_end(argument_list);

418 }

419

420 #ifdef TEST

421 // LCOV_EXCL_START

422 #include <string.h>

423

424 int main(int argc, char **argv)

425 {

426 int i;

427 av_log_set_level(AV_LOG_DEBUG);

428 for (use_color=0; use_color<=256; use_color = 255*use_color+1) {

429 av_log(NULL, AV_LOG_FATAL, "use_color: %d\n", use_color);

430 for (i = AV_LOG_DEBUG; i>=AV_LOG_QUIET; i-=8) {

431 av_log(NULL, i, " %d", i);

432 av_log(NULL, AV_LOG_INFO, "e ");

433 av_log(NULL, i + 256*123, "C%d", i);

434 av_log(NULL, AV_LOG_INFO, "e");

435 }

436 av_log(NULL, AV_LOG_PANIC, "\n");

437 }

438 return 0;

439 }

440 // LCOV_EXCL_STOP

441 #endif

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