1 /* 2 * Copyright © 2010 Mozilla Foundation 3 * 4 * This program is made available under an ISC-style license. See the 5 * accompanying file LICENSE for details. 6 */ 7 #if !defined(NESTEGG_671cac2a_365d_ed69_d7a3_4491d3538d79) 8 #define NESTEGG_671cac2a_365d_ed69_d7a3_4491d3538d79 9 10 #include <limits.h> 11 #include <stdint.h> 12 13 #if defined(__cplusplus) 14 extern "C" { 15 #endif 16 17 /** @mainpage 18 19 @section intro Introduction 20 21 This is the documentation for the <tt>libnestegg</tt> C API. 22 <tt>libnestegg</tt> is a demultiplexing library for <a 23 href="http://www.webmproject.org/code/specs/container/">WebM</a> 24 media files. 25 26 @section example Example code 27 28 @code 29 nestegg * demux_ctx; 30 nestegg_init(&demux_ctx, io, NULL, -1); 31 32 nestegg_packet * pkt; 33 while ((r = nestegg_read_packet(demux_ctx, &pkt)) > 0) { 34 unsigned int track; 35 36 nestegg_packet_track(pkt, &track); 37 38 // This example decodes the first track only. 39 if (track == 0) { 40 unsigned int chunk, chunks; 41 42 nestegg_packet_count(pkt, &chunks); 43 44 // Decode each chunk of data. 45 for (chunk = 0; chunk < chunks; ++chunk) { 46 unsigned char * data; 47 size_t data_size; 48 49 nestegg_packet_data(pkt, chunk, &data, &data_size); 50 51 example_codec_decode(codec_ctx, data, data_size); 52 } 53 } 54 55 nestegg_free_packet(pkt); 56 } 57 58 nestegg_destroy(demux_ctx); 59 @endcode 60 */ 61 62 63 /** @file 64 The <tt>libnestegg</tt> C API. */ 65 66 #define NESTEGG_TRACK_VIDEO 0 /**< Track is of type video. */ 67 #define NESTEGG_TRACK_AUDIO 1 /**< Track is of type audio. */ 68 #define NESTEGG_TRACK_UNKNOWN INT_MAX /**< Track is of type unknown. */ 69 70 #define NESTEGG_CODEC_VP8 0 /**< Track uses Google On2 VP8 codec. */ 71 #define NESTEGG_CODEC_VORBIS 1 /**< Track uses Xiph Vorbis codec. */ 72 #define NESTEGG_CODEC_VP9 2 /**< Track uses Google On2 VP9 codec. */ 73 #define NESTEGG_CODEC_OPUS 3 /**< Track uses Xiph Opus codec. */ 74 #define NESTEGG_CODEC_AV1 4 /**< Track uses AOMedia AV1 codec. */ 75 #define NESTEGG_CODEC_UNKNOWN INT_MAX /**< Track uses unknown codec. */ 76 77 #define NESTEGG_VIDEO_MONO 0 /**< Track is mono video. */ 78 #define NESTEGG_VIDEO_STEREO_LEFT_RIGHT 1 /**< Track is side-by-side stereo video. Left first. */ 79 #define NESTEGG_VIDEO_STEREO_BOTTOM_TOP 2 /**< Track is top-bottom stereo video. Right first. */ 80 #define NESTEGG_VIDEO_STEREO_TOP_BOTTOM 3 /**< Track is top-bottom stereo video. Left first. */ 81 #define NESTEGG_VIDEO_STEREO_RIGHT_LEFT 11 /**< Track is side-by-side stereo video. Right first. */ 82 83 #define NESTEGG_SEEK_SET 0 /**< Seek offset relative to beginning of stream. */ 84 #define NESTEGG_SEEK_CUR 1 /**< Seek offset relative to current position in stream. */ 85 #define NESTEGG_SEEK_END 2 /**< Seek offset relative to end of stream. */ 86 87 #define NESTEGG_LOG_DEBUG 1 /**< Debug level log message. */ 88 #define NESTEGG_LOG_INFO 10 /**< Informational level log message. */ 89 #define NESTEGG_LOG_WARNING 100 /**< Warning level log message. */ 90 #define NESTEGG_LOG_ERROR 1000 /**< Error level log message. */ 91 #define NESTEGG_LOG_CRITICAL 10000 /**< Critical level log message. */ 92 93 #define NESTEGG_ENCODING_COMPRESSION 0 /**< Content encoding type is compression. */ 94 #define NESTEGG_ENCODING_ENCRYPTION 1 /**< Content encoding type is encryption. */ 95 96 #define NESTEGG_PACKET_HAS_SIGNAL_BYTE_FALSE 0 /**< Packet does not have signal byte */ 97 #define NESTEGG_PACKET_HAS_SIGNAL_BYTE_UNENCRYPTED 1 /**< Packet has signal byte and is unencrypted */ 98 #define NESTEGG_PACKET_HAS_SIGNAL_BYTE_ENCRYPTED 2 /**< Packet has signal byte and is encrypted */ 99 #define NESTEGG_PACKET_HAS_SIGNAL_BYTE_PARTITIONED 4 /**< Packet has signal byte and is partitioned */ 100 101 #define NESTEGG_PACKET_HAS_KEYFRAME_FALSE 0 /**< Packet contains only keyframes. */ 102 #define NESTEGG_PACKET_HAS_KEYFRAME_TRUE 1 /**< Packet does not contain any keyframes */ 103 #define NESTEGG_PACKET_HAS_KEYFRAME_UNKNOWN 2 /**< Packet may or may not contain keyframes */ 104 105 typedef struct nestegg nestegg; /**< Opaque handle referencing the stream state. */ 106 typedef struct nestegg_packet nestegg_packet; /**< Opaque handle referencing a packet of data. */ 107 108 /** User supplied IO context. */ 109 typedef struct { 110 /** User supplied read callback. 111 @param buffer Buffer to read data into. 112 @param length Length of supplied buffer in bytes. 113 @param userdata The #userdata supplied by the user. 114 @retval 1 Read succeeded. 115 @retval 0 End of stream. 116 @retval -1 Error. */ 117 int (* read)(void * buffer, size_t length, void * userdata); 118 119 /** User supplied seek callback. 120 @param offset Offset within the stream to seek to. 121 @param whence Seek direction. One of #NESTEGG_SEEK_SET, 122 #NESTEGG_SEEK_CUR, or #NESTEGG_SEEK_END. 123 @param userdata The #userdata supplied by the user. 124 @retval 0 Seek succeeded. 125 @retval -1 Error. */ 126 int (* seek)(int64_t offset, int whence, void * userdata); 127 128 /** User supplied tell callback. 129 @param userdata The #userdata supplied by the user. 130 @returns Current position within the stream. 131 @retval -1 Error. */ 132 int64_t (* tell)(void * userdata); 133 134 /** User supplied pointer to be passed to the IO callbacks. */ 135 void * userdata; 136 } nestegg_io; 137 138 /** Parameters specific to a video track. */ 139 typedef struct { 140 unsigned int stereo_mode; /**< Video mode. One of #NESTEGG_VIDEO_MONO, 141 #NESTEGG_VIDEO_STEREO_LEFT_RIGHT, 142 #NESTEGG_VIDEO_STEREO_BOTTOM_TOP, or 143 #NESTEGG_VIDEO_STEREO_TOP_BOTTOM. */ 144 unsigned int width; /**< Width of the video frame in pixels. */ 145 unsigned int height; /**< Height of the video frame in pixels. */ 146 unsigned int display_width; /**< Display width of the video frame in pixels. */ 147 unsigned int display_height; /**< Display height of the video frame in pixels. */ 148 unsigned int crop_bottom; /**< Pixels to crop from the bottom of the frame. */ 149 unsigned int crop_top; /**< Pixels to crop from the top of the frame. */ 150 unsigned int crop_left; /**< Pixels to crop from the left of the frame. */ 151 unsigned int crop_right; /**< Pixels to crop from the right of the frame. */ 152 unsigned int alpha_mode; /**< 1 if an additional opacity stream is available, otherwise 0. */ 153 unsigned int matrix_coefficients; /**< See Table 4 of ISO/IEC 23001-8:2016. */ 154 unsigned int range; /**< Clipping of color ranges. */ 155 unsigned int transfer_characteristics; /**< See Table 3 of ISO/IEC 23091-4. */ 156 unsigned int primaries; /**< See Table 2 of ISO/IEC 23091-4. */ 157 double primary_r_chromacity_x; /**< Red X chromaticity coordinate per CIE 1931. 158 NaN means element not present. */ 159 double primary_r_chromacity_y; /**< Red Y chromaticity coordinate per CIE 1931. 160 NaN means element not present. */ 161 double primary_g_chromacity_x; /**< Green X chromaticity coordinate per CIE 1931. 162 NaN means element not present. */ 163 double primary_g_chromacity_y; /**< Green Y chromaticity coordinate per CIE 1931. 164 NaN means element not present. */ 165 double primary_b_chromacity_x; /**< Blue X chromaticity coordinate per CIE 1931. 166 NaN means element not present. */ 167 double primary_b_chromacity_y; /**< Blue Y chromaticity coordinate per CIE 1931. 168 NaN means element not present. */ 169 double white_point_chromaticity_x; /**< White X chromaticity coordinate per CIE 1931. 170 NaN means element not present. */ 171 double white_point_chromaticity_y; /**< White Y chromaticity coordinate per CIE 1931. 172 NaN means element not present. */ 173 double luminance_max; /**< Maximum luminance in cd/m2. 174 NaN means element not present. */ 175 double luminance_min; /**< Minimum luminance in cd/m2. 176 NaN means element not present. */ 177 } nestegg_video_params; 178 179 /** Parameters specific to an audio track. */ 180 typedef struct { 181 double rate; /**< Sampling rate in Hz. */ 182 unsigned int channels; /**< Number of audio channels. */ 183 unsigned int depth; /**< Bits per sample. */ 184 uint64_t codec_delay; /**< Nanoseconds that must be discarded from the start. */ 185 uint64_t seek_preroll;/**< Nanoseconds that must be discarded after a seek. */ 186 } nestegg_audio_params; 187 188 /** Logging callback function pointer. */ 189 typedef void (* nestegg_log)(nestegg * context, unsigned int severity, char const * format, ...); 190 191 /** Initialize a nestegg context. During initialization the parser will 192 read forward in the stream processing all elements until the first 193 block of media is reached. All track metadata has been processed at this point. 194 @param context Storage for the new nestegg context. @see nestegg_destroy 195 @param io User supplied IO context. 196 @param callback Optional logging callback function pointer. May be NULL. 197 @param max_offset Optional maximum offset to be read. Set -1 to ignore. 198 @retval 0 Success. 199 @retval -1 Error. */ 200 int nestegg_init(nestegg ** context, nestegg_io io, nestegg_log callback, int64_t max_offset); 201 202 /** Destroy a nestegg context and free associated memory. 203 @param context #nestegg context to be freed. @see nestegg_init */ 204 void nestegg_destroy(nestegg * context); 205 206 /** Query the duration of the media stream in nanoseconds. 207 @param context Stream context initialized by #nestegg_init. 208 @param duration Storage for the queried duration. 209 @retval 0 Success. 210 @retval -1 Error. */ 211 int nestegg_duration(nestegg * context, uint64_t * duration); 212 213 /** Query the tstamp scale of the media stream in nanoseconds. 214 @note Timestamps presented by nestegg have been scaled by this value 215 before presentation to the caller. 216 @param context Stream context initialized by #nestegg_init. 217 @param scale Storage for the queried scale factor. 218 @retval 0 Success. 219 @retval -1 Error. */ 220 int nestegg_tstamp_scale(nestegg * context, uint64_t * scale); 221 222 /** Query the number of tracks in the media stream. 223 @param context Stream context initialized by #nestegg_init. 224 @param tracks Storage for the queried track count. 225 @retval 0 Success. 226 @retval -1 Error. */ 227 int nestegg_track_count(nestegg * context, unsigned int * tracks); 228 229 /** Query the start and end offset for a particular cluster. 230 @param context Stream context initialized by #nestegg_init. 231 @param cluster_num Zero-based cluster number; order they appear in cues. 232 @param max_offset Optional maximum offset to be read. Set -1 to ignore. 233 @param start_pos Starting offset of the cluster. -1 means non-existant. 234 @param end_pos Starting offset of the cluster. -1 means non-existant or 235 final cluster. 236 @param tstamp Starting timestamp of the cluster. 237 @retval 0 Success. 238 @retval -1 Error. */ 239 int nestegg_get_cue_point(nestegg * context, unsigned int cluster_num, 240 int64_t max_offset, int64_t * start_pos, 241 int64_t * end_pos, uint64_t * tstamp); 242 243 /** Seek to @a offset. Stream will seek directly to offset. 244 Must be used to seek to the start of a cluster; the parser will not be 245 able to understand other offsets. 246 @param context Stream context initialized by #nestegg_init. 247 @param offset Absolute offset in bytes. 248 @retval 0 Success. 249 @retval -1 Error. */ 250 int nestegg_offset_seek(nestegg * context, uint64_t offset); 251 252 /** Seek @a track to @a tstamp. Stream seek will terminate at the earliest 253 key point in the stream at or before @a tstamp. Other tracks in the 254 stream will output packets with unspecified but nearby timestamps. 255 @param context Stream context initialized by #nestegg_init. 256 @param track Zero based track number. 257 @param tstamp Absolute timestamp in nanoseconds. 258 @retval 0 Success. 259 @retval -1 Error. */ 260 int nestegg_track_seek(nestegg * context, unsigned int track, uint64_t tstamp); 261 262 /** Query the type specified by @a track. 263 @param context Stream context initialized by #nestegg_init. 264 @param track Zero based track number. 265 @retval #NESTEGG_TRACK_VIDEO Track type is video. 266 @retval #NESTEGG_TRACK_AUDIO Track type is audio. 267 @retval #NESTEGG_TRACK_UNKNOWN Track type is unknown. 268 @retval -1 Error. */ 269 int nestegg_track_type(nestegg * context, unsigned int track); 270 271 /** Query the codec ID specified by @a track. 272 @param context Stream context initialized by #nestegg_init. 273 @param track Zero based track number. 274 @retval #NESTEGG_CODEC_VP8 Track codec is VP8. 275 @retval #NESTEGG_CODEC_VP9 Track codec is VP9. 276 @retval #NESTEGG_CODEC_AV1 Track codec is AV1. 277 @retval #NESTEGG_CODEC_VORBIS Track codec is Vorbis. 278 @retval #NESTEGG_CODEC_OPUS Track codec is Opus. 279 @retval #NESTEGG_CODEC_UNKNOWN Track codec is unknown. 280 @retval -1 Error. */ 281 int nestegg_track_codec_id(nestegg * context, unsigned int track); 282 283 /** Query the number of codec initialization chunks for @a track. Each 284 chunk of data should be passed to the codec initialization functions in 285 the order returned. 286 @param context Stream context initialized by #nestegg_init. 287 @param track Zero based track number. 288 @param count Storage for the queried chunk count. 289 @retval 0 Success. 290 @retval -1 Error. */ 291 int nestegg_track_codec_data_count(nestegg * context, unsigned int track, 292 unsigned int * count); 293 294 /** Get a pointer to chunk number @a item of codec initialization data for 295 @a track. 296 @param context Stream context initialized by #nestegg_init. 297 @param track Zero based track number. 298 @param item Zero based chunk item number. 299 @param data Storage for the queried data pointer. 300 The data is owned by the #nestegg context. 301 @param length Storage for the queried data size. 302 @retval 0 Success. 303 @retval -1 Error. */ 304 int nestegg_track_codec_data(nestegg * context, unsigned int track, unsigned int item, 305 unsigned char ** data, size_t * length); 306 307 /** Query the video parameters specified by @a track. 308 @param context Stream context initialized by #nestegg_init. 309 @param track Zero based track number. 310 @param params Storage for the queried video parameters. 311 @retval 0 Success. 312 @retval -1 Error. */ 313 int nestegg_track_video_params(nestegg * context, unsigned int track, 314 nestegg_video_params * params); 315 316 /** Query the audio parameters specified by @a track. 317 @param context Stream context initialized by #nestegg_init. 318 @param track Zero based track number. 319 @param params Storage for the queried audio parameters. 320 @retval 0 Success. 321 @retval -1 Error. */ 322 int nestegg_track_audio_params(nestegg * context, unsigned int track, 323 nestegg_audio_params * params); 324 325 /** Query the encoding status for @a track. If a track has multiple encodings 326 the first will be returned. 327 @param context Stream context initialized by #nestegg_init. 328 @param track Zero based track number. 329 @retval #NESTEGG_ENCODING_COMPRESSION The track is compressed, but not encrypted. 330 @retval #NESTEGG_ENCODING_ENCRYPTION The track is encrypted and compressed. 331 @retval -1 Error. */ 332 int nestegg_track_encoding(nestegg * context, unsigned int track); 333 334 /** Query the ContentEncKeyId for @a track. Will return an error if the track 335 in not encrypted, or is not recognized. 336 @param context Stream context initialized by #nestegg_init. 337 @param track Zero based track number. 338 @param content_enc_key_id Storage for queried id. The content encryption key used. 339 Owned by nestegg and will be freed separately. 340 @param content_enc_key_id_length Length of the queried ContentEncKeyId in bytes. 341 @retval 0 Success. 342 @retval -1 Error. */ 343 int nestegg_track_content_enc_key_id(nestegg * context, unsigned int track, 344 unsigned char const ** content_enc_key_id, 345 size_t * content_enc_key_id_length); 346 347 /** Query the default frame duration for @a track. For a video track, this 348 is typically the inverse of the video frame rate. 349 @param context Stream context initialized by #nestegg_init. 350 @param track Zero based track number. 351 @param duration Storage for the default duration in nanoseconds. 352 @retval 0 Success. 353 @retval -1 Error. */ 354 int nestegg_track_default_duration(nestegg * context, unsigned int track, 355 uint64_t * duration); 356 357 /** Reset parser state to the last valid state before nestegg_read_packet failed. 358 @param context Stream context initialized by #nestegg_init. 359 @retval 0 Success. 360 @retval -1 Error. */ 361 int nestegg_read_reset(nestegg * context); 362 363 /** Read a packet of media data. A packet consists of one or more chunks of 364 data associated with a single track. nestegg_read_packet should be 365 called in a loop while the return value is 1 to drive the stream parser 366 forward. @see nestegg_free_packet 367 @param context Context returned by #nestegg_init. 368 @param packet Storage for the returned nestegg_packet. 369 @retval 1 Additional packets may be read in subsequent calls. 370 @retval 0 End of stream. 371 @retval -1 Error. */ 372 int nestegg_read_packet(nestegg * context, nestegg_packet ** packet); 373 374 /** Destroy a nestegg_packet and free associated memory. 375 @param packet #nestegg_packet to be freed. @see nestegg_read_packet */ 376 void nestegg_free_packet(nestegg_packet * packet); 377 378 /** Query the keyframe status for a given packet. 379 @param packet Packet initialized by #nestegg_read_packet. 380 @retval #NESTEGG_PACKET_HAS_KEYFRAME_FALSE Packet contains no keyframes. 381 @retval #NESTEGG_PACKET_HAS_KEYFRAME_TRUE Packet contains keyframes. 382 @retval #NESTEGG_PACKET_HAS_KEYFRAME_UNKNOWN Unknown packet keyframe content. 383 @retval -1 Error. */ 384 int nestegg_packet_has_keyframe(nestegg_packet * packet); 385 386 /** Query the track number of @a packet. 387 @param packet Packet initialized by #nestegg_read_packet. 388 @param track Storage for the queried zero based track index. 389 @retval 0 Success. 390 @retval -1 Error. */ 391 int nestegg_packet_track(nestegg_packet * packet, unsigned int * track); 392 393 /** Query the timestamp in nanoseconds of @a packet. 394 @param packet Packet initialized by #nestegg_read_packet. 395 @param tstamp Storage for the queried timestamp in nanoseconds. 396 @retval 0 Success. 397 @retval -1 Error. */ 398 int nestegg_packet_tstamp(nestegg_packet * packet, uint64_t * tstamp); 399 400 /** Query the duration in nanoseconds of @a packet. 401 @param packet Packet initialized by #nestegg_read_packet. 402 @param duration Storage for the queried duration in nanoseconds. 403 @retval 0 Success. 404 @retval -1 Error. */ 405 int nestegg_packet_duration(nestegg_packet * packet, uint64_t * duration); 406 407 /** Query the number of data chunks contained in @a packet. 408 @param packet Packet initialized by #nestegg_read_packet. 409 @param count Storage for the queried chunk count. 410 @retval 0 Success. 411 @retval -1 Error. */ 412 int nestegg_packet_count(nestegg_packet * packet, unsigned int * count); 413 414 /** Get a pointer to chunk number @a item of packet data. 415 @param packet Packet initialized by #nestegg_read_packet. 416 @param item Zero based chunk item number. 417 @param data Storage for the queried data pointer. 418 The data is owned by the #nestegg_packet packet. 419 @param length Storage for the queried data size. 420 @retval 0 Success. 421 @retval -1 Error. */ 422 int nestegg_packet_data(nestegg_packet * packet, unsigned int item, 423 unsigned char ** data, size_t * length); 424 425 /** Get a pointer to additional data with identifier @a id of additional packet 426 data. If @a id isn't present in the packet, returns -1. 427 @param packet Packet initialized by #nestegg_read_packet. 428 @param id Codec specific identifer. For VP8, use 1 to get a VP8 encoded 429 frame containing an alpha channel in its Y plane. 430 @param data Storage for the queried data pointer. 431 The data is owned by the #nestegg_packet packet. 432 @param length Storage for the queried data size. 433 @retval 0 Success. 434 @retval -1 Error. */ 435 int nestegg_packet_additional_data(nestegg_packet * packet, unsigned int id, 436 unsigned char ** data, size_t * length); 437 438 /** Returns discard_padding for given packet 439 @param packet Packet initialized by #nestegg_read_packet. 440 @param discard_padding pointer to store discard padding in. 441 @retval 0 Success. 442 @retval -1 Error. */ 443 int nestegg_packet_discard_padding(nestegg_packet * packet, 444 int64_t * discard_padding); 445 446 /** Query if a packet is encrypted. 447 @param packet Packet initialized by #nestegg_read_packet. 448 @retval #NESTEGG_PACKET_HAS_SIGNAL_BYTE_FALSE No signal byte, encryption 449 information not read from packet. 450 @retval #NESTEGG_PACKET_HAS_SIGNAL_BYTE_UNENCRYPTED Encrypted bit not 451 set, encryption information not read from packet. 452 @retval #NESTEGG_PACKET_HAS_SIGNAL_BYTE_ENCRYPTED Encrypted bit set, 453 encryption infomation read from packet. 454 @retval #NESTEGG_PACKET_HAS_SIGNAL_BYTE_PARTITIONED Partitioned bit set, 455 encryption and parition information read from packet. 456 @retval -1 Error.*/ 457 int nestegg_packet_encryption(nestegg_packet * packet); 458 459 /** Query the IV for an encrypted packet. Expects a packet from an encrypted 460 track, and will return error if given a packet that has no signal btye. 461 @param packet Packet initialized by #nestegg_read_packet. 462 @param iv Storage for queried iv. 463 @param length Length of returned iv, may be 0. 464 The data is owned by the #nestegg_packet packet. 465 @retval 0 Success. 466 @retval -1 Error. 467 */ 468 int nestegg_packet_iv(nestegg_packet * packet, unsigned char const ** iv, 469 size_t * length); 470 471 /** Query the packet for offsets. 472 @param packet Packet initialized by #nestegg_read_packet. 473 @param partition_offsets Storage for queried offsets. 474 @param num_offsets Length of returned offsets, may be 0. 475 The data is owned by the #nestegg_packet packet. 476 @retval 0 Success. 477 @retval -1 Error. 478 */ 479 int nestegg_packet_offsets(nestegg_packet * packet, 480 uint32_t const ** partition_offsets, 481 uint8_t * num_offsets); 482 483 /** Returns reference_block given packet 484 @param packet Packet initialized by #nestegg_read_packet. 485 @param reference_block pointer to store reference block in. 486 @retval 0 Success. 487 @retval -1 Error. */ 488 int nestegg_packet_reference_block(nestegg_packet * packet, 489 int64_t * reference_block); 490 491 /** Query the presence of cues. 492 @param context Stream context initialized by #nestegg_init. 493 @retval 0 The media has no cues. 494 @retval 1 The media has cues. */ 495 int nestegg_has_cues(nestegg * context); 496 497 /** Try to determine if the buffer looks like the beginning of a WebM file. 498 @param buffer A buffer containing the beginning of a media file. 499 @param length The size of the buffer. 500 @retval 0 The file is not a WebM file. 501 @retval 1 The file is a WebM file. */ 502 int nestegg_sniff(unsigned char const * buffer, size_t length); 503 504 #if defined(__cplusplus) 505 } 506 #endif 507 508 #endif /* NESTEGG_671cac2a_365d_ed69_d7a3_4491d3538d79 */ 509