FFmpeg: libavutil/log.c Source File

FFmpeg

libavutil

log.c

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1 /*

2 * log functions

3 * Copyright (c) 2003 Michel Bardiaux

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 */

21

22 /**

23 * @file

24 * logging functions

25 */

26

27 #include "config.h"

28

29 #if HAVE_UNISTD_H

30 #include <unistd.h>

31 #endif

32 #if HAVE_IO_H

33 #include <io.h>

34 #endif

35 #include <inttypes.h>

36 #include <stdarg.h>

37 #include <stdio.h>

38 #include <stdlib.h>

39 #include <string.h>

40 #include "bprint.h"

41 #include "common.h"

42 #include "internal.h"

43 #include "log.h"

44 #include "thread.h"

45

46 static AVMutex mutex = AV_MUTEX_INITIALIZER;

47

48 #define LINE_SZ 1024

49

50 #if HAVE_VALGRIND_VALGRIND_H

51 #include <valgrind/valgrind.h>

52 /* this is the log level at which valgrind will output a full backtrace */

53 #define BACKTRACE_LOGLEVEL AV_LOG_ERROR

54 #endif

55

56 static int av_log_level = AV_LOG_INFO;

57 static int flags;

58

59 #define NB_LEVELS 8

60 #if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE

61 #include <windows.h>

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

63 [AV_LOG_PANIC /8] = 12,

64 [AV_LOG_FATAL /8] = 12,

65 [AV_LOG_ERROR /8] = 12,

66 [AV_LOG_WARNING/8] = 14,

67 [AV_LOG_INFO /8] = 7,

68 [AV_LOG_VERBOSE/8] = 10,

69 [AV_LOG_DEBUG /8] = 10,

70 [AV_LOG_TRACE /8] = 8,

71 [16+AV_CLASS_CATEGORY_NA ] = 7,

72 [16+AV_CLASS_CATEGORY_INPUT ] = 13,

73 [16+AV_CLASS_CATEGORY_OUTPUT ] = 5,

74 [16+AV_CLASS_CATEGORY_MUXER ] = 13,

75 [16+AV_CLASS_CATEGORY_DEMUXER ] = 5,

76 [16+AV_CLASS_CATEGORY_ENCODER ] = 11,

77 [16+AV_CLASS_CATEGORY_DECODER ] = 3,

78 [16+AV_CLASS_CATEGORY_FILTER ] = 10,

79 [16+AV_CLASS_CATEGORY_BITSTREAM_FILTER] = 9,

80 [16+AV_CLASS_CATEGORY_SWSCALER ] = 7,

81 [16+AV_CLASS_CATEGORY_SWRESAMPLER ] = 7,

82 [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT ] = 13,

83 [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT ] = 5,

84 [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT ] = 13,

85 [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT ] = 5,

86 [16+AV_CLASS_CATEGORY_DEVICE_OUTPUT ] = 13,

87 [16+AV_CLASS_CATEGORY_DEVICE_INPUT ] = 5,

88 };

89

90 static int16_t background, attr_orig;

91 static HANDLE con;

92 #else

93

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

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

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

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

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

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

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

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

102 [AV_LOG_TRACE /8] = 34 << 8 | 0x07,

103 [16+AV_CLASS_CATEGORY_NA ] = 250 << 8 | 0x09,

104 [16+AV_CLASS_CATEGORY_INPUT ] = 219 << 8 | 0x15,

105 [16+AV_CLASS_CATEGORY_OUTPUT ] = 201 << 8 | 0x05,

106 [16+AV_CLASS_CATEGORY_MUXER ] = 213 << 8 | 0x15,

107 [16+AV_CLASS_CATEGORY_DEMUXER ] = 207 << 8 | 0x05,

108 [16+AV_CLASS_CATEGORY_ENCODER ] = 51 << 8 | 0x16,

109 [16+AV_CLASS_CATEGORY_DECODER ] = 39 << 8 | 0x06,

110 [16+AV_CLASS_CATEGORY_FILTER ] = 155 << 8 | 0x12,

111 [16+AV_CLASS_CATEGORY_BITSTREAM_FILTER] = 192 << 8 | 0x14,

112 [16+AV_CLASS_CATEGORY_SWSCALER ] = 153 << 8 | 0x14,

113 [16+AV_CLASS_CATEGORY_SWRESAMPLER ] = 147 << 8 | 0x14,

114 [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT ] = 213 << 8 | 0x15,

115 [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT ] = 207 << 8 | 0x05,

116 [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT ] = 213 << 8 | 0x15,

117 [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT ] = 207 << 8 | 0x05,

118 [16+AV_CLASS_CATEGORY_DEVICE_OUTPUT ] = 213 << 8 | 0x15,

119 [16+AV_CLASS_CATEGORY_DEVICE_INPUT ] = 207 << 8 | 0x05,

120 };

121

122 #endif

123 static int use_color = -1;

124

125 #if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE

126 static void win_console_puts(const char *str)

127 {

128 const uint8_t *q = str;

129 uint16_t line[LINE_SZ];

130

131 while (*q) {

132 uint16_t *buf = line;

133 DWORD nb_chars = 0;

134 DWORD written;

135

136 while (*q && nb_chars < LINE_SZ - 1) {

137 uint32_t ch;

138 uint16_t tmp;

139

140 GET_UTF8(ch, *q ? *q++ : 0, ch = 0xfffd; goto continue_on_invalid;)

141 continue_on_invalid:

142 PUT_UTF16(ch, tmp, *buf++ = tmp; nb_chars++;)

143 }

144

145 WriteConsoleW(con, line, nb_chars, &written, NULL);

146 }

147 }

148 #endif

149

150 static void check_color_terminal(void)

151 {

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

153

154 #if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE

155 CONSOLE_SCREEN_BUFFER_INFO con_info;

156 DWORD dummy;

157 con = GetStdHandle(STD_ERROR_HANDLE);

158 if (con != INVALID_HANDLE_VALUE && !GetConsoleMode(con, &dummy))

159 con = INVALID_HANDLE_VALUE;

160 if (con != INVALID_HANDLE_VALUE) {

161 GetConsoleScreenBufferInfo(con, &con_info);

162 attr_orig = con_info.wAttributes;

163 background = attr_orig & 0xF0;

164 }

165 #endif

166

167 if (getenv("AV_LOG_FORCE_NOCOLOR")) {

168 use_color = 0;

169 } else if (getenv("AV_LOG_FORCE_COLOR")) {

170 use_color = 1;

171 } else {

172 #if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE

173 use_color = (con != INVALID_HANDLE_VALUE);

174 #elif HAVE_ISATTY

175 use_color = (term && isatty(2));

176 #else

177 use_color = 0;

178 #endif

179 }

180

181 if (getenv("AV_LOG_FORCE_256COLOR") || term && strstr(term, "256color"))

182 use_color *= 256;

183 }

184

185 static void ansi_fputs(int level, int tint, const char *str, int local_use_color)

186 {

187 if (local_use_color == 1) {

188 fprintf(stderr,

189 "033円[%"PRIu32";3%"PRIu32"m%s033円[0m",

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

191 color[level] & 15,

192 str);

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

194 fprintf(stderr,

195 "033円[48;5;%"PRIu32"m033円[38;5;%dm%s033円[0m",

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

197 tint,

198 str);

199 } else if (local_use_color == 256) {

200 fprintf(stderr,

201 "033円[48;5;%"PRIu32"m033円[38;5;%"PRIu32"m%s033円[0m",

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

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

204 str);

205 } else

206 fputs(str, stderr);

207 }

208

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

210 {

211 int local_use_color;

212 if (!*str)

213 return;

214

215 if (use_color < 0)

216 check_color_terminal();

217

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

219 else local_use_color = use_color;

220

221 #if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE

222 if (con != INVALID_HANDLE_VALUE) {

223 if (local_use_color)

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

225 win_console_puts(str);

226 if (local_use_color)

227 SetConsoleTextAttribute(con, attr_orig);

228 } else {

229 ansi_fputs(level, tint, str, local_use_color);

230 }

231 #else

232 ansi_fputs(level, tint, str, local_use_color);

233 #endif

234

235 }

236

237 const char *av_default_item_name(void *ptr)

238 {

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

240 }

241

242 AVClassCategory av_default_get_category(void *ptr)

243 {

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

245 }

246

247 static void sanitize(uint8_t *line){

248 while(*line){

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

250 *line='?';

251 line++;

252 }

253 }

254

255 static int get_category(void *ptr){

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

257 if( !avc

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

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

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

261

262 if(avc->get_category)

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

264

265 return avc->category + 16;

266 }

267

268 static const char *get_level_str(int level)

269 {

270 switch (level) {

271 case AV_LOG_QUIET:

272 return "quiet";

273 case AV_LOG_DEBUG:

274 return "debug";

275 case AV_LOG_TRACE:

276 return "trace";

277 case AV_LOG_VERBOSE:

278 return "verbose";

279 case AV_LOG_INFO:

280 return "info";

281 case AV_LOG_WARNING:

282 return "warning";

283 case AV_LOG_ERROR:

284 return "error";

285 case AV_LOG_FATAL:

286 return "fatal";

287 case AV_LOG_PANIC:

288 return "panic";

289 default:

290 return "";

291 }

292 }

293

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

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

296 {

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

298 av_bprint_init(part+0, 0, AV_BPRINT_SIZE_AUTOMATIC);

299 av_bprint_init(part+1, 0, AV_BPRINT_SIZE_AUTOMATIC);

300 av_bprint_init(part+2, 0, AV_BPRINT_SIZE_AUTOMATIC);

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

302

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

304 if (*print_prefix && avc) {

305 if (avc->parent_log_context_offset) {

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

307 avc->parent_log_context_offset);

308 if (parent && *parent) {

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

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

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

312 }

313 }

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

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

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

317 }

318

319 if (*print_prefix && (level > AV_LOG_QUIET) && (flags & AV_LOG_PRINT_LEVEL))

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

321

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

323

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

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

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

327 }

328 }

329

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

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

332 {

333 av_log_format_line2(ptr, level, fmt, vl, line, line_size, print_prefix);

334 }

335

336 int av_log_format_line2(void *ptr, int level, const char *fmt, va_list vl,

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

338 {

339 AVBPrint part[4];

340 int ret;

341

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

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

344 av_bprint_finalize(part+3, NULL);

345 return ret;

346 }

347

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

349 {

350 static int print_prefix = 1;

351 static int count;

352 static char prev[LINE_SZ];

353 AVBPrint part[4];

354 char line[LINE_SZ];

355 static int is_atty;

356 int type[2];

357 unsigned tint = 0;

358

359 if (level >= 0) {

360 tint = level & 0xff00;

361 level &= 0xff;

362 }

363

364 if (level > av_log_level)

365 return;

366 ff_mutex_lock(&mutex);

367

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

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

370

371 #if HAVE_ISATTY

372 if (!is_atty)

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

374 #endif

375

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

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

378 count++;

379 if (is_atty == 1)

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

381 goto end;

382 }

383 if (count > 0) {

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

385 count = 0;

386 }

387 strcpy(prev, line);

388 sanitize(part[0].str);

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

390 sanitize(part[1].str);

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

392 sanitize(part[2].str);

393 colored_fputs(av_clip(level >> 3, 0, NB_LEVELS - 1), tint >> 8, part[2].str);

394 sanitize(part[3].str);

395 colored_fputs(av_clip(level >> 3, 0, NB_LEVELS - 1), tint >> 8, part[3].str);

396

397 #if CONFIG_VALGRIND_BACKTRACE

398 if (level <= BACKTRACE_LOGLEVEL)

399 VALGRIND_PRINTF_BACKTRACE("%s", "");

400 #endif

401 end:

402 av_bprint_finalize(part+3, NULL);

403 ff_mutex_unlock(&mutex);

404 }

405

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

407 av_log_default_callback;

408

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

410 {

411 va_list vl;

412 va_start(vl, fmt);

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

414 va_end(vl);

415 }

416

417 void av_log_once(void* avcl, int initial_level, int subsequent_level, int *state, const char *fmt, ...)

418 {

419 va_list vl;

420 va_start(vl, fmt);

421 av_vlog(avcl, *state ? subsequent_level : initial_level, fmt, vl);

422 va_end(vl);

423 *state = 1;

424 }

425

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

427 {

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

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

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

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

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

433 if (log_callback)

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

435 }

436

437 int av_log_get_level(void)

438 {

439 return av_log_level;

440 }

441

442 void av_log_set_level(int level)

443 {

444 av_log_level = level;

445 }

446

447 void av_log_set_flags(int arg)

448 {

449 flags = arg;

450 }

451

452 int av_log_get_flags(void)

453 {

454 return flags;

455 }

456

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

458 {

459 av_log_callback = callback;

460 }

461

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

463 va_list argument_list)

464 {

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

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

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

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

469 "been implemented.\n");

470 if (sample)

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

472 "of this file to https://streams.videolan.org/upload/ "

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

474 }

475

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

477 {

478 va_list argument_list;

479

480 va_start(argument_list, msg);

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

482 va_end(argument_list);

483 }

484

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

486 {

487 va_list argument_list;

488

489 va_start(argument_list, msg);

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

491 va_end(argument_list);

492 }

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

Send the specified message to the log if the level is less than or equal to the current av_log_level.

Definition: log.c:426

#define AV_LOG_WARNING

Something somehow does not look correct.

Definition: log.h:186

uint8_t level

Definition: svq3.c:204

#define av_clip

Definition: common.h:95

AV_CLASS_CATEGORY_DECODER

@ AV_CLASS_CATEGORY_DECODER

Definition: log.h:35

static void format_line(void *avcl, int level, const char *fmt, va_list vl, AVBPrint part[4], int *print_prefix, int type[2])

Definition: log.c:294

Definition: vf_paletteuse.c:509

void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)

Definition: bprint.c:69

#define AV_LOG_QUIET

Print no output.

Definition: log.h:162

#define AV_LOG_PANIC

Something went really wrong and we will crash now.

Definition: log.h:167

missing_feature_sample

static void missing_feature_sample(int sample, void *avc, const char *msg, va_list argument_list)

Definition: log.c:462

AVClass::version

int version

LIBAVUTIL_VERSION with which this structure was created.

Definition: log.h:92

av_log_format_line2

int av_log_format_line2(void *ptr, int level, const char *fmt, va_list vl, char *line, int line_size, int *print_prefix)

Format a line of log the same way as the default callback.

Definition: log.c:336

AV_CLASS_CATEGORY_INPUT

@ AV_CLASS_CATEGORY_INPUT

Definition: log.h:30

AV_CLASS_CATEGORY_NA

@ AV_CLASS_CATEGORY_NA

Definition: log.h:29

static uint8_t tmp[11]

Definition: aes_ctr.c:28

#define AV_LOG_VERBOSE

Detailed information.

Definition: log.h:196

#define LINE_SZ

Definition: log.c:48

static void ansi_fputs(int level, int tint, const char *str, int local_use_color)

Definition: log.c:185

ff_mutex_unlock

static int ff_mutex_unlock(AVMutex *mutex)

Definition: thread.h:178

static const char * get_level_str(int level)

Definition: log.c:268

int dummy

Definition: motion.c:65

AV_BPRINT_SIZE_AUTOMATIC

#define AV_BPRINT_SIZE_AUTOMATIC

it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type

Definition: writing_filters.txt:86

AV_CLASS_CATEGORY_OUTPUT

@ AV_CLASS_CATEGORY_OUTPUT

Definition: log.h:31

AV_CLASS_CATEGORY_DEVICE_INPUT

@ AV_CLASS_CATEGORY_DEVICE_INPUT

Definition: log.h:45

#define GET_UTF8(val, GET_BYTE, ERROR)

Convert a UTF-8 character (up to 4 bytes) to its 32-bit UCS-4 encoded form.

Definition: common.h:469

AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT

@ AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT

Definition: log.h:43

#define AV_LOG_TRACE

Extremely verbose debugging, useful for libav* development.

Definition: log.h:206

#define AV_LOG_ERROR

Something went wrong and cannot losslessly be recovered.

Definition: log.h:180

#define AVMutex

Definition: thread.h:173

av_log_format_line

void av_log_format_line(void *ptr, int level, const char *fmt, va_list vl, char *line, int line_size, int *print_prefix)

Format a line of log the same way as the default callback.

Definition: log.c:330

static int av_log_level

Definition: log.c:56

#define AV_LOG_DEBUG

Stuff which is only useful for libav* developers.

Definition: log.h:201

AV_CLASS_CATEGORY_NB

@ AV_CLASS_CATEGORY_NB

not part of ABI/API

Definition: log.h:46

#define NB_LEVELS

Definition: log.c:59

static void callback(void *priv_data, int index, uint8_t *buf, int buf_size, int64_t time, enum dshowDeviceType devtype)

Definition: dshow.c:341

const char * arg

Definition: jacosubdec.c:67

AV_CLASS_CATEGORY_DEMUXER

@ AV_CLASS_CATEGORY_DEMUXER

Definition: log.h:33

av_log_get_level

int av_log_get_level(void)

Get the current log level.

Definition: log.c:437

avpriv_report_missing_feature

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

Definition: log.c:485

Describe the class of an AVClass context structure.

Definition: log.h:66

#define NULL

Definition: coverity.c:32

#define PUT_UTF16(val, tmp, PUT_16BIT)

Definition: common.h:556

av_default_item_name

const char * av_default_item_name(void *ptr)

Return the context name.

Definition: log.c:237

av_log_set_flags

void av_log_set_flags(int arg)

Definition: log.c:447

AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT

@ AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT

Definition: log.h:40

static int get_category(void *ptr)

Definition: log.c:255

AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT

@ AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT

Definition: log.h:41

AV_CLASS_CATEGORY_FILTER

@ AV_CLASS_CATEGORY_FILTER

Definition: log.h:36

static int flags

Definition: log.c:57

av_log_set_callback

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

Set the logging callback.

Definition: log.c:457

av_bprint_finalize

int av_bprint_finalize(AVBPrint *buf, char **ret_str)

Finalize a print buffer.

Definition: bprint.c:235

AVClass::category

AVClassCategory category

Category used for visualization (like color) This is only set if the category is equal for all object...

Definition: log.h:114

#define sample

Definition: flacdsp_template.c:44

AV_MUTEX_INITIALIZER

#define AV_MUTEX_INITIALIZER

Definition: thread.h:174

AVClass::get_category

AVClassCategory(* get_category)(void *ctx)

Callback to return the category.

Definition: log.h:120

av_log_get_flags

int av_log_get_flags(void)

Definition: log.c:452

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

Definition: log.c:209

Definition: graph2dot.c:48

static int ff_mutex_lock(AVMutex *mutex)

Definition: thread.h:177

AV_CLASS_CATEGORY_SWRESAMPLER

@ AV_CLASS_CATEGORY_SWRESAMPLER

Definition: log.h:39

#define AV_LOG_INFO

Standard information.

Definition: log.h:191

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

Definition: log.c:409

av_log_set_level

void av_log_set_level(int level)

Set the log level.

Definition: log.c:442

AVClassCategory

AVClassCategory

Definition: log.h:28

AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT

@ AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT

Definition: log.h:42

static int use_color

Definition: log.c:123

check_color_terminal

static void check_color_terminal(void)

Definition: log.c:150

avpriv_request_sample

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

Definition: log.c:476

ret

Definition: filter_design.txt:187

#define AV_LOG_FATAL

Something went wrong and recovery is not possible.

Definition: log.h:174

void av_bprintf(AVBPrint *buf, const char *fmt,...)

Definition: bprint.c:94

av_log_callback

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

Definition: log.c:406

AV_LOG_SKIP_REPEATED

#define AV_LOG_SKIP_REPEATED

Skip repeated messages, this requires the user app to use av_log() instead of (f)printf as the 2 woul...

Definition: log.h:370

AV_CLASS_CATEGORY_MUXER

@ AV_CLASS_CATEGORY_MUXER

Definition: log.h:32

av_default_get_category

AVClassCategory av_default_get_category(void *ptr)

Definition: log.c:242

void av_vbprintf(AVBPrint *buf, const char *fmt, va_list vl_arg)

Append a formatted string to a print buffer.

Definition: bprint.c:117

AV_CLASS_CATEGORY_SWSCALER

@ AV_CLASS_CATEGORY_SWSCALER

Definition: log.h:38

AV_CLASS_CATEGORY_DEVICE_OUTPUT

@ AV_CLASS_CATEGORY_DEVICE_OUTPUT

Definition: log.h:44

void av_log_once(void *avcl, int initial_level, int subsequent_level, int *state, const char *fmt,...)

Definition: log.c:417

av_log_default_callback

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

Default logging callback.

Definition: log.c:348

AV_CLASS_CATEGORY_BITSTREAM_FILTER

@ AV_CLASS_CATEGORY_BITSTREAM_FILTER

Definition: log.h:37

convert_header.str

string str

Definition: convert_header.py:20

AVClass::log_level_offset_offset

int log_level_offset_offset

Offset in the structure where log_level_offset is stored.

Definition: log.h:98

AV_CLASS_CATEGORY_ENCODER

@ AV_CLASS_CATEGORY_ENCODER

Definition: log.h:34

AVClass::parent_log_context_offset

int parent_log_context_offset

Offset in the structure where a pointer to the parent context for logging is stored.

Definition: log.h:107

#define isatty(fd)

Definition: checkasm.c:62

AVClass::item_name

const char *(* item_name)(void *ctx)

A pointer to a function which returns the name of a context instance ctx associated with the class.

Definition: log.h:77

static struct @345 state

int

Definition: ffmpeg_filter.c:156

#define snprintf

Definition: snprintf.h:34

static void sanitize(uint8_t *line)

Definition: log.c:247

static void log_callback(void *ptr, int level, const char *fmt, va_list vl)

Definition: ffprobe.c:329

AV_LOG_PRINT_LEVEL

#define AV_LOG_PRINT_LEVEL

Include the log severity in messages originating from codecs.

Definition: log.h:378

The official guide to swscale for confused that consecutive non overlapping rectangles of slice_bottom special converter These generally are unscaled converters of common like for each output line the vertical scaler pulls lines from a ring buffer When the ring buffer does not contain the wanted line

Definition: swscale.txt:40

static AVMutex mutex

Definition: log.c:46

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