This is an extension of MPEG-ISOBASE media file format bitstream processing library https://github.com/DicomJ/mpeg-isobase. Please find more details there.
If you would like to check out and build MPEG-MP4 library, the procedure is as follows (requires modern C++17 compiler):
-
Check out MPEG-MP4
git clone git@github.com:DicomJ/mpeg-mp4.git mpeg-mp4
-
Build MPEG-MP4
mkdir mpeg-mp4/build cd mpeg-mp4/build cmake -DCMAKE_BUILD_TYPE=Release -DCXX_STD=c++17 -DCMAKE_INSTALL_PREFIX=$(pwd)/install $(pwd)/../../mpeg-mp4 make install
// TBD
-
Checkout an example:
cat ../../mpeg-mp4/demo/dump.cc
bitstream::input::file::Stream stream("sample.mp4"); mpeg::mp4::Parser parser(stream, bitstream::output::print::to_stdout); parser.parse();
-
Build and run it:
g++ \ -o dump \ -std=c++17 -Wno-multichar \ -I install/include \ -Wl,-rpath,$(pwd)/install/lib64 install/lib64/*.so \ ../../mpeg-mp4/demo/dump.cc time ./dump sample.txt -
Check out the output
+- FileTypeBox { // [28 bytes] @0 | uint32 size : 28 | uint32 type : ftyp | uint32 major_brand : mp42 | uint32 minor_version : 0 | uint32[3] compatible_brands : [mp42, isom, avc1] | } +- FreeSpaceBox('free') { // [8 bytes] @28 | uint32 size : 132 | uint32 type : free | } | | <Payload>[124 bytes] +- MediaDataBox { // [8 bytes] @160 | uint32 size : 379880 | uint32 type : mdat | } | | <Payload>[379872 bytes] +- MovieBox { // [8 bytes] @380040 | uint32 size : 3459 | uint32 type : moov | } | +- MovieHeaderBox { // [108 bytes] @380048 | | uint32 size : 108 | | uint32 type : mvhd | | uint8 version : 0 | | uint24 flags : 0 | | uint32 creation_time : Sat Mar 20 21:29:11 2010 | | uint32 modification_time : Sat Mar 20 21:29:12 2010 | | uint32 timescale : 90000 | | uint32 duration : 501120 | | int32 rate : 1 | | int16 volume : 1 | | uint16 reserved : 0 | | uint32[2] reserved : [0, 0] | | int32[9] matrix : [65536, 0, 0, 0, 65536, 0, 0, 0, 1073741824] | | uint32[6] pre_defined : [0, 0, 0, 0, 0, 0] | | uint32 next_track_ID : 3 | | } | +- ObjectDescriptorBox { // [12 bytes] @380156 | | uint32 size : 24 | | uint32 type : iods | | uint8 version : 0 | | uint24 flags : 0 | | } | | | <Payload>[12 bytes] | +- TrackBox { // [8 bytes] @380180 | | uint32 size : 1546 | | uint32 type : trak | | } | | +- TrackHeaderBox { // [92 bytes] @380188 | | | uint32 size : 92 | | | uint32 type : tkhd | | | uint8 version : 0 | | | uint24 flags : 1 | | | uint32 creation_time : Sat Mar 20 21:29:11 2010 | | | uint32 modification_time : Sat Mar 20 21:29:12 2010 | | | uint32 track_ID : 1 | | | uint32 reserved : 0 | | | uint32 duration : 498000 | | | uint32[2] reserved : [0, 0] | | | int16 layer : 0 | | | int16 alternate_group : 0 | | | int16 volume : 0 | | | uint16 reserved : 0 | | | int32[9] matrix : [65536, 0, 0, 0, 65536, 0, 0, 0, 1073741824] | | | uint32 width : 560 | | | uint32 height : 320 | | | } | | +- MediaBox { // [8 bytes] @380280 | | | uint32 size : 1446 | | | uint32 type : mdia | | | } | | | +- MediaHeaderBox { // [32 bytes] @380288 | | | | uint32 size : 32 | | | | uint32 type : mdhd | | | | uint8 version : 0 | | | | uint24 flags : 0 | | | | uint32 creation_time : Sat Mar 20 21:29:11 2010 | | | | uint32 modification_time : Sat Mar 20 21:29:12 2010 | | | | uint32 timescale : 90000 | | | | uint32 duration : 498000 | | | | uint1 pad : 0 | | | | uint5[3] language : und (Undetermined) | | | | uint16 pre_defined : 0 | | | | } | | | +- HandlerBox { // [21 bytes] @380320 | | | | uint32 size : 33 | | | | uint32 type : hdlr | | | | uint8 version : 0 | | | | uint24 flags : 0 | | | | uint32 pre_defined : 0 | | | | uint32 handler_type : vide | | | | uint32[3] reserved : [0, 0, 0] | | | | string name : "vide?" | | | | } | | | | | <Payload>[12 bytes] | | | +- MediaInformationBox { // [8 bytes] @380353 | | | | uint32 size : 1373 | | | | uint32 type : minf | | | | } | | | | +- VideoMediaHeaderBox { // [20 bytes] @380361 | | | | | uint32 size : 20 | | | | | uint32 type : vmhd | | | | | uint8 version : 0 | | | | | uint24 flags : 1 | | | | | uint16 graphicsmode : 0 | | | | | uint16[3] opcolor : [0, 0, 0] | | | | | } | | | | +- DataInformationBox { // [8 bytes] @380381 | | | | | uint32 size : 36 | | | | | uint32 type : dinf | | | | | } | | | | | +- DataReferenceBox { // [16 bytes] @380389 | | | | | | uint32 size : 28 | | | | | | uint32 type : dref | | | | | | uint8 version : 0 | | | | | | uint24 flags : 0 | | | | | | uint32 entry_count : 1 | | | | | | } | | | | | | +- DataEntryUrlBox { // [12 bytes] @380405 | | | | | | | uint32 size : 12 | | | | | | | uint32 type : url | | | | | | | uint8 version : 0 | | | | | | | uint24 flags : 1 | | | | | | | string location : "" | | | | | | | } | | | | +- SampleTableBox { // [8 bytes] @380417 | | | | | uint32 size : 1309 | | | | | uint32 type : stbl | | | | | } | | | | | +- SampleDescriptionBox { // [16 bytes] @380425 | | | | | | uint32 size : 171 | | | | | | uint32 type : stsd | | | | | | uint8 version : 0 | | | | | | uint24 flags : 0 | | | | | | uint32 entry_count : 1 | | | | | | } | | | | | | +- VisualSampleEntry { // [86 bytes] @380441 | | | | | | | uint32 size : 155 | | | | | | | uint32 type : avc1 | | | | | | | uint8[6] reserved : [0, 0, 0, 0, 0, 0] | | | | | | | uint16 data_reference_index: 1 | | | | | | | uint16 pre_defined : 0 | | | | | | | uint16 reserved : 0 | | | | | | | uint32[3] pre_defined : [0, 0, 0] | | | | | | | uint16 width : 560 | | | | | | | uint16 height : 320 | | | | | | | uint32 horizresolution : 72 | | | | | | | uint32 vertresolution : 72 | | | | | | | uint32 reserved : 0 | | | | | | | uint16 frame_count : 1 | | | | | | | string compressorname : "JVT/AVC Coding" | | | | | | | uint16 depth : 24 | | | | | | | int16 pre_defined : -1 | | | | | | | } | | | | | | | | <Payload>[69 bytes] | | | | | +- TimeToSampleBox { // [16 bytes] @380596 | | | | | | uint32 size : 24 | | | | | | uint32 type : stts | | | | | | uint8 version : 0 | | | | | | uint24 flags : 0 | | | | | | uint32 entry_count : 1 | | | | | | } | | | | | | +- Entry #0 { // [8 bytes] @380612 | | | | | | | uint32 sample_count : 166 | | | | | | | uint32 sample_delta : 3000 | | | | | | | } | | | | | +- SampleSizeBox { // [20 bytes] @380620 | | | | | | uint32 size : 684 | | | | | | uint32 type : stsz | | | | | | uint8 version : 0 | | | | | | uint24 flags : 0 | | | | | | uint32 sample_size : 0 | | | | | | uint32 sample_count : 166 | | | | | | } | | | | | | +- Entry #0 { // [4 bytes] @380640 | | | | | | | uint32 entry_size : 22055 | | | | | | | } | | | | | | +- Entry #1 { // [4 bytes] @380644 | | | | | | | uint32 entry_size : 2848 | | | | | | | } | | | | | | +- Entry #2 { // [4 bytes] @380648 | | | | | | | uint32 entry_size : 1468 | | | | | | | } | | | | | | +- Entry #3 { // [4 bytes] @380652 | | | | | | | uint32 entry_size : 1506 | | | | | | | } | | | | | | +- Entry #4 { // [4 bytes] @380656 | | | | | | | uint32 entry_size : 1473 | | | | | | | } | | | | | | | | | | | | | | ... | | | | | | | | | | | | | +- Entry #161 { // [4 bytes] @381284 | | | | | | | uint32 entry_size : 994 | | | | | | | } | | | | | | +- Entry #162 { // [4 bytes] @381288 | | | | | | | uint32 entry_size : 1030 | | | | | | | } | | | | | | +- Entry #163 { // [4 bytes] @381292 | | | | | | | uint32 entry_size : 742 | | | | | | | } | | | | | | +- Entry #164 { // [4 bytes] @381296 | | | | | | | uint32 entry_size : 619 | | | | | | | } | | | | | | +- Entry #165 { // [4 bytes] @381300 | | | | | | | uint32 entry_size : 629 | | | | | | | } | | | | | +- SampleToChunkBox { // [16 bytes] @381304 | | | | | | uint32 size : 40 | | | | | | uint32 type : stsc | | | | | | uint8 version : 0 | | | | | | uint24 flags : 0 | | | | | | uint32 entry_count : 2 | | | | | | } | | | | | | +- Entry #0 { // [12 bytes] @381320 | | | | | | | uint32 first_chunk : 1 | | | | | | | uint32 samples_per_chunk : 4 | | | | | | | uint32 sample_description_index: 1 | | | | | | | } | | | | | | +- Entry #1 { // [12 bytes] @381332 | | | | | | | uint32 first_chunk : 42 | | | | | | | uint32 samples_per_chunk : 2 | | | | | | | uint32 sample_description_index: 1 | | | | | | | } | | | | | +- ChunkOffsetBox { // [16 bytes] @381344 | | | | | | uint32 size : 184 | | | | | | uint32 type : stco | | | | | | uint8 version : 0 | | | | | | uint24 flags : 0 | | | | | | uint32 entry_count : 42 | | | | | | } | | | | | | +- Entry #0 { // [4 bytes] @381360 | | | | | | | uint32 chunk_offset : 168 | | | | | | | } | | | | | | +- Entry #1 { // [4 bytes] @381364 | | | | | | | uint32 chunk_offset : 29670 | | | | | | | } | | | | | | +- Entry #2 { // [4 bytes] @381368 | | | | | | | uint32 chunk_offset : 35828 | | | | | | | } | | | | | | +- Entry #3 { // [4 bytes] @381372 | | | | | | | uint32 chunk_offset : 41992 | | | | | | | } | | | | | | +- Entry #4 { // [4 bytes] @381376 | | | | | | | uint32 chunk_offset : 46948 | | | | | | | } | | | | | | | | | | | | | | ... | | | | | | | | | | | | | +- Entry #37 { // [4 bytes] @381508 | | | | | | | uint32 chunk_offset : 350704 | | | | | | | } | | | | | | +- Entry #38 { // [4 bytes] @381512 | | | | | | | uint32 chunk_offset : 359298 | | | | | | | } | | | | | | +- Entry #39 { // [4 bytes] @381516 | | | | | | | uint32 chunk_offset : 365867 | | | | | | | } | | | | | | +- Entry #40 { // [4 bytes] @381520 | | | | | | | uint32 chunk_offset : 373722 | | | | | | | } | | | | | | +- Entry #41 { // [4 bytes] @381524 | | | | | | | uint32 chunk_offset : 378471 | | | | | | | } | | | | | +- SyncSampleBox { // [16 bytes] @381528 | | | | | | uint32 size : 20 | | | | | | uint32 type : stss | | | | | | uint8 version : 0 | | | | | | uint24 flags : 0 | | | | | | uint32 entry_count : 1 | | | | | | } | | | | | | +- Entry #0 { // [4 bytes] @381544 | | | | | | | uint32 sample_number : 1 | | | | | | | } | | | | | +- SampleDependencyTypeBox { // [12 bytes] @381548 | | | | | | uint32 size : 178 | | | | | | uint32 type : sdtp | | | | | | uint8 version : 0 | | | | | | uint24 flags : 0 | | | | | | } | | | | | | +- Entry #0 { // [1 bytes] @381560 | | | | | | | uint2 is_leading : 0 | | | | | | | uint2 sample_depends_on : 0 | | | | | | | uint2 sample_is_depended_on: 1 | | | | | | | uint2 sample_has_redundancy: 0 | | | | | | | } | | | | | | +- Entry #1 { // [1 bytes] @381561 | | | | | | | uint2 is_leading : 1 | | | | | | | uint2 sample_depends_on : 0 | | | | | | | uint2 sample_is_depended_on: 1 | | | | | | | uint2 sample_has_redundancy: 0 | | | | | | | } | | | | | | +- Entry #2 { // [1 bytes] @381562 | | | | | | | uint2 is_leading : 1 | | | | | | | uint2 sample_depends_on : 0 | | | | | | | uint2 sample_is_depended_on: 1 | | | | | | | uint2 sample_has_redundancy: 0 | | | | | | | } | | | | | | +- Entry #3 { // [1 bytes] @381563 | | | | | | | uint2 is_leading : 1 | | | | | | | uint2 sample_depends_on : 0 | | | | | | | uint2 sample_is_depended_on: 1 | | | | | | | uint2 sample_has_redundancy: 0 | | | | | | | } | | | | | | +- Entry #4 { // [1 bytes] @381564 | | | | | | | uint2 is_leading : 1 | | | | | | | uint2 sample_depends_on : 0 | | | | | | | uint2 sample_is_depended_on: 1 | | | | | | | uint2 sample_has_redundancy: 0 | | | | | | | } | | | | | | | | | | | | | | ... | | | | | | | | | | | | | +- Entry #161 { // [1 bytes] @381721 | | | | | | | uint2 is_leading : 1 | | | | | | | uint2 sample_depends_on : 0 | | | | | | | uint2 sample_is_depended_on: 1 | | | | | | | uint2 sample_has_redundancy: 0 | | | | | | | } | | | | | | +- Entry #162 { // [1 bytes] @381722 | | | | | | | uint2 is_leading : 1 | | | | | | | uint2 sample_depends_on : 0 | | | | | | | uint2 sample_is_depended_on: 1 | | | | | | | uint2 sample_has_redundancy: 0 | | | | | | | } | | | | | | +- Entry #163 { // [1 bytes] @381723 | | | | | | | uint2 is_leading : 1 | | | | | | | uint2 sample_depends_on : 0 | | | | | | | uint2 sample_is_depended_on: 1 | | | | | | | uint2 sample_has_redundancy: 0 | | | | | | | } | | | | | | +- Entry #164 { // [1 bytes] @381724 | | | | | | | uint2 is_leading : 1 | | | | | | | uint2 sample_depends_on : 0 | | | | | | | uint2 sample_is_depended_on: 1 | | | | | | | uint2 sample_has_redundancy: 0 | | | | | | | } | | | | | | +- Entry #165 { // [1 bytes] @381725 | | | | | | | uint2 is_leading : 1 | | | | | | | uint2 sample_depends_on : 0 | | | | | | | uint2 sample_is_depended_on: 1 | | | | | | | uint2 sample_has_redundancy: 0 | | | | | | | } | +- TrackBox { // [8 bytes] @381726 | | uint32 size : 1662 | | uint32 type : trak | | } | | +- TrackHeaderBox { // [92 bytes] @381734 | | | uint32 size : 92 | | | uint32 type : tkhd | | | uint8 version : 0 | | | uint24 flags : 3 | | | uint32 creation_time : Sat Mar 20 21:29:11 2010 | | | uint32 modification_time : Sat Mar 20 21:29:12 2010 | | | uint32 track_ID : 2 | | | uint32 reserved : 0 | | | uint32 duration : 501120 | | | uint32[2] reserved : [0, 0] | | | int16 layer : 0 | | | int16 alternate_group : 0 | | | int16 volume : 1 | | | uint16 reserved : 0 | | | int32[9] matrix : [65536, 0, 0, 0, 65536, 0, 0, 0, 1073741824] | | | uint32 width : 0 | | | uint32 height : 0 | | | } | | +- MediaBox { // [8 bytes] @381826 | | | uint32 size : 1540 | | | uint32 type : mdia | | | } | | | +- MediaHeaderBox { // [32 bytes] @381834 | | | | uint32 size : 32 | | | | uint32 type : mdhd | | | | uint8 version : 0 | | | | uint24 flags : 0 | | | | uint32 creation_time : Sat Mar 20 21:29:11 2010 | | | | uint32 modification_time : Sat Mar 20 21:29:12 2010 | | | | uint32 timescale : 48000 | | | | uint32 duration : 267264 | | | | uint1 pad : 0 | | | | uint5[3] language : eng (English) | | | | uint16 pre_defined : 0 | | | | } | | | +- HandlerBox { // [21 bytes] @381866 | | | | uint32 size : 33 | | | | uint32 type : hdlr | | | | uint8 version : 0 | | | | uint24 flags : 0 | | | | uint32 pre_defined : 0 | | | | uint32 handler_type : soun | | | | uint32[3] reserved : [0, 0, 0] | | | | string name : "soun?" | | | | } | | | | | <Payload>[12 bytes] | | | +- MediaInformationBox { // [8 bytes] @381899 | | | | uint32 size : 1467 | | | | uint32 type : minf | | | | } | | | | +- SoundMediaHeaderBox { // [16 bytes] @381907 | | | | | uint32 size : 16 | | | | | uint32 type : smhd | | | | | uint8 version : 0 | | | | | uint24 flags : 0 | | | | | int16 balance : 0 | | | | | uint16 reserved : 0 | | | | | } | | | | +- DataInformationBox { // [8 bytes] @381923 | | | | | uint32 size : 36 | | | | | uint32 type : dinf | | | | | } | | | | | +- DataReferenceBox { // [16 bytes] @381931 | | | | | | uint32 size : 28 | | | | | | uint32 type : dref | | | | | | uint8 version : 0 | | | | | | uint24 flags : 0 | | | | | | uint32 entry_count : 1 | | | | | | } | | | | | | +- DataEntryUrlBox { // [12 bytes] @381947 | | | | | | | uint32 size : 12 | | | | | | | uint32 type : url | | | | | | | uint8 version : 0 | | | | | | | uint24 flags : 1 | | | | | | | string location : "" | | | | | | | } | | | | +- SampleTableBox { // [8 bytes] @381959 | | | | | uint32 size : 1407 | | | | | uint32 type : stbl | | | | | } | | | | | +- SampleDescriptionBox { // [16 bytes] @381967 | | | | | | uint32 size : 103 | | | | | | uint32 type : stsd | | | | | | uint8 version : 0 | | | | | | uint24 flags : 0 | | | | | | uint32 entry_count : 1 | | | | | | } | | | | | | +- AudioSampleEntry { // [36 bytes] @381983 | | | | | | | uint32 size : 87 | | | | | | | uint32 type : mp4a | | | | | | | uint8[6] reserved : [0, 0, 0, 0, 0, 0] | | | | | | | uint16 data_reference_index: 1 | | | | | | | uint32[2] reserved : [0, 0] | | | | | | | uint16 channelcount : 1 | | | | | | | uint16 samplesize : 16 | | | | | | | uint16 pre_defined : 0 | | | | | | | uint16 reserverd : 0 | | | | | | | uint32 samplerate : 48000 | | | | | | | } | | | | | | | | <Payload>[51 bytes] | | | | | +- TimeToSampleBox { // [16 bytes] @382070 | | | | | | uint32 size : 24 | | | | | | uint32 type : stts | | | | | | uint8 version : 0 | | | | | | uint24 flags : 0 | | | | | | uint32 entry_count : 1 | | | | | | } | | | | | | +- Entry #0 { // [8 bytes] @382086 | | | | | | | uint32 sample_count : 261 | | | | | | | uint32 sample_delta : 1024 | | | | | | | } | | | | | +- SampleSizeBox { // [20 bytes] @382094 | | | | | | uint32 size : 1064 | | | | | | uint32 type : stsz | | | | | | uint8 version : 0 | | | | | | uint24 flags : 0 | | | | | | uint32 sample_size : 0 | | | | | | uint32 sample_count : 261 | | | | | | } | | | | | | +- Entry #0 { // [4 bytes] @382114 | | | | | | | uint32 entry_size : 247 | | | | | | | } | | | | | | +- Entry #1 { // [4 bytes] @382118 | | | | | | | uint32 entry_size : 219 | | | | | | | } | | | | | | +- Entry #2 { // [4 bytes] @382122 | | | | | | | uint32 entry_size : 225 | | | | | | | } | | | | | | +- Entry #3 { // [4 bytes] @382126 | | | | | | | uint32 entry_size : 229 | | | | | | | } | | | | | | +- Entry #4 { // [4 bytes] @382130 | | | | | | | uint32 entry_size : 233 | | | | | | | } | | | | | | | | | | | | | | ... | | | | | | | | | | | | | +- Entry #256 { // [4 bytes] @383138 | | | | | | | uint32 entry_size : 222 | | | | | | | } | | | | | | +- Entry #257 { // [4 bytes] @383142 | | | | | | | uint32 entry_size : 203 | | | | | | | } | | | | | | +- Entry #258 { // [4 bytes] @383146 | | | | | | | uint32 entry_size : 205 | | | | | | | } | | | | | | +- Entry #259 { // [4 bytes] @383150 | | | | | | | uint32 entry_size : 212 | | | | | | | } | | | | | | +- Entry #260 { // [4 bytes] @383154 | | | | | | | uint32 entry_size : 109 | | | | | | | } | | | | | +- SampleToChunkBox { // [16 bytes] @383158 | | | | | | uint32 size : 40 | | | | | | uint32 type : stsc | | | | | | uint8 version : 0 | | | | | | uint24 flags : 0 | | | | | | uint32 entry_count : 2 | | | | | | } | | | | | | +- Entry #0 { // [12 bytes] @383174 | | | | | | | uint32 first_chunk : 1 | | | | | | | uint32 samples_per_chunk : 7 | | | | | | | uint32 sample_description_index: 1 | | | | | | | } | | | | | | +- Entry #1 { // [12 bytes] @383186 | | | | | | | uint32 first_chunk : 38 | | | | | | | uint32 samples_per_chunk : 2 | | | | | | | uint32 sample_description_index: 1 | | | | | | | } | | | | | +- ChunkOffsetBox { // [16 bytes] @383198 | | | | | | uint32 size : 168 | | | | | | uint32 type : stco | | | | | | uint8 version : 0 | | | | | | uint24 flags : 0 | | | | | | uint32 entry_count : 38 | | | | | | } | | | | | | +- Entry #0 { // [4 bytes] @383214 | | | | | | | uint32 chunk_offset : 28045 | | | | | | | } | | | | | | +- Entry #1 { // [4 bytes] @383218 | | | | | | | uint32 chunk_offset : 34203 | | | | | | | } | | | | | | +- Entry #2 { // [4 bytes] @383222 | | | | | | | uint32 chunk_offset : 40420 | | | | | | | } | | | | | | +- Entry #3 { // [4 bytes] @383226 | | | | | | | uint32 chunk_offset : 45345 | | | | | | | } | | | | | | +- Entry #4 { // [4 bytes] @383230 | | | | | | | uint32 chunk_offset : 49831 | | | | | | | } | | | | | | | | | | | | | | ... | | | | | | | | | | | | | +- Entry #33 { // [4 bytes] @383346 | | | | | | | uint32 chunk_offset : 357564 | | | | | | | } | | | | | | +- Entry #34 { // [4 bytes] @383350 | | | | | | | uint32 chunk_offset : 364185 | | | | | | | } | | | | | | +- Entry #35 { // [4 bytes] @383354 | | | | | | | uint32 chunk_offset : 372249 | | | | | | | } | | | | | | +- Entry #36 { // [4 bytes] @383358 | | | | | | | uint32 chunk_offset : 377067 | | | | | | | } | | | | | | +- Entry #37 { // [4 bytes] @383362 | | | | | | | uint32 chunk_offset : 379719 | | | | | | | } | | +- UserDataBox { // [8 bytes] @383366 | | | uint32 size : 22 | | | uint32 type : udta | | | } | | | +- <undeclared>::Box('name') { // [8 bytes] @383374 | | | | uint32 size : 14 | | | | uint32 type : name | | | | } | | | | | <Payload>[6 bytes] | +- UserDataBox { // [8 bytes] @383388 | | uint32 size : 111 | | uint32 type : udta | | } | | +- MetaBox { // [12 bytes] @383396 | | | uint32 size : 103 | | | uint32 type : meta | | | uint8 version : 0 | | | uint24 flags : 0 | | | } | | | +- HandlerBox { // [21 bytes] @383408 | | | | uint32 size : 33 | | | | uint32 type : hdlr | | | | uint8 version : 0 | | | | uint24 flags : 0 | | | | uint32 pre_defined : 0 | | | | uint32 handler_type : mdir | | | | uint32[3] reserved : [0, 0, 0] | | | | string name : "mdir?" | | | | } | | | | | <Payload>[12 bytes] | | | +- <undeclared>::Box('ilst') { // [8 bytes] @383441 | | | | uint32 size : 58 | | | | uint32 type : ilst | | | | } | | | | | <Payload>[50 bytes] +- FreeSpaceBox('free') { // [8 bytes] @383499 | uint32 size : 132 | uint32 type : free | } | | <Payload>[124 bytes] real 0m0.014s user 0m0.012s sys 0m0.000s