Editing Resource Container (RCO)

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=Description=
=Description=
The file extension in PSP and PS3 is '''RCO''' that seems to be the acronym of '''R'''esource '''C'''ontainer '''O'''bject
'''R'''esource '''Co'''ntainer '''O'''bjet (RCO) contents are loaded by [[XMB]] modules (also known as .sprx plugins), see [[Plugin Interfaces]] and [[VSH]]


The file signature (aka [https://en.wikipedia.org/wiki/Magic_number_(programming) magic number]) from PSP (in little endian) is '''PRF''' that seems to be the acronym of '''P'''laystation '''R'''esource '''F'''ile
*Compression types availables:
**[[Template:Zlib_Header|ZLIB]]
**RLZ
**Uncompressed


RCO contents are loaded by other firmware functions as [[XMBML Structure|XMBML]] setting files, and [[XMB]] modules (also known as .sprx plugins), see [[Plugin Interfaces]] and [[VSH]]
=Contents=
 
==Contents==
*RCO contents (See [[Multimedia Formats and Tools]]): <!--and see rcomage miscmap.ini for a list of the supported formats-->
*RCO contents (See [[Multimedia Formats and Tools]]): <!--and see rcomage miscmap.ini for a list of the supported formats-->
Text for all [[Template:PlayStation Languages|languages]], textures, sounds (for cursor navigation, trophy unlocking, etc...) and models
Text for all [[Template:XMB_languages|languages]], textures, sounds (for cursor navigation, trophy unlocking, etc...) and models


{| class="wikitable"
{| class="wikitable"
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|}
|}


==Versions==
=Versions=
{| class="wikitable" style="font-size:x-small;"
{| class="wikitable"
|-
|-
! rowspan="2" | <abbr title="based in the changelog of custom_render_plugin.rco PS3, and rcomage source code">RCO version</abbr> !! rowspan="2" | Firmware !! rowspan="2" | <abbr title="release date of the first firmware using that rco version in format YYYY/MM/DD">Release date</abbr> !! colspan="3"  | RCO format specifications
! rowspan="2" | <abbr title="based in the changelog of custom_render_plugin.rco PS3, and rcomage source code">RCO version</abbr> !! rowspan="2" | Firmware !! rowspan="2" | <abbr title="release date of the first firmware using that rco version in format YYYY/MM/DD">Release date</abbr> !! colspan="3"  | RCO format specifications
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! Toc trees !! Toc compression !! Other Notes
! Toc trees !! Toc compression !! Other Notes
|-
|-
! 0x55
| 0x55 || {{icon content psp}} 0.6.5 || pre-retail || 9 || uncompressed || archaic rco format, header is 16 bytes smaller
| {{cellcolors|#cccccc}} {{icon content psp|50px}} 0.6.5 || pre-retail || 9 || none || archaic rco format, header is 16 bytes smaller
|-
| 0x70 || {{icon content psp}} 1.00 || 2004 / 12 / 12 || 10 || uncompressed ||
|-
| 0x71 || {{icon content psp}} 1.50~2.50 || 2005 / 3 / 24 || 10 || uncompressed || normal toc up to this version
|-
| 0x90 || {{icon content psp}} 2.60 || 2005 / 11 / 29 || 10 ||  || zlib compressed toc implemented
|-
| 0x95 || {{icon content psp}} 2.70~2.71 || 2006 / 4 / 25 || 10 ||  || rlz compressed toc implemented
|-
| 0x96 || {{icon content psp}} 2.80~3.40 || 2006 / 7 / 27 || 10 ||  || the toc seems to be compressed in parts
|-
| 0x97 || {{icon content ps3}} 1.00~1.54 || 2006 / 11 / 11 || 10 ||  ||
|-
| 0x100 || {{icon content psp}} 3.50~6.61 || 2007 / 5 / 31 || 10 ||  ||
|-
| 0x102 || {{icon content ps3}} 1.60~1.70 || 2007 / 3 / 22 || 10 ||  ||
|-
|-
! 0x70
| 0x104 || {{icon content ps3}} 1.80~1.82 || 2007 / 5 / 24 || 10 || ||  
| {{cellcolors|#cccccc}} {{icon content psp|50px}} 1.00 || 2004 / 12 / 12 || 10 || none ||  
|-
|-
! 0x71
| 0x105 || {{icon content ps3}} 1.90~1.94 || 2007 / 7 / 24 || 10 || ||  
| {{cellcolors|#cccccc}} {{icon content psp|50px}} 1.50~2.50 || 2005 / 3 / 24 || 10 || none ||  
|-
|-
! 0x90
| 0x106 || {{icon content ps3}} 2.00~2.17 || 2007 / 11 / 8 || 10 || ||  
| {{cellcolors|#cccccc}} {{icon content psp|50px}} 2.60 || 2005 / 11 / 29 || 10 || zlib ||  
|-
|-
! 0x93
| 0x107 || {{icon content ps3}} 2.20~2.80 || 2008 / 3 / 25 || 10 ||  ||
| {{cellcolors|#888888}} {{icon content ps3|50px}} <abbr title="pre-retail PS3 DECR firmware 0.82.006 probably same version for all 0.82 firmware series">0.82</abbr> || 2006 / 3 / 31 || 10 || none ||  
|-
| 0x108 || {{icon content ps3}} 3.00~3.01 || 2009 / 9 / 1 || 10 ||  ||
|-
| 0x110 || {{icon content ps3}} 3.10~3.74 || 2009 / 11 / 19 || 10 ||  ||
|-
| 0x120 || {{icon content ps3}} 4.00~4.25 || 2011 / 11 / 29 || 10 ||  ||
|-
| 0x130 || {{icon content ps3}} 4.30~4.76 || 2012 / 10 / 24 || 10 || ||  
|}
 
=RCO Structure=
The container structure can be represented as an XML (see [[RCOXML Coding|RCOXML]]), with [[rcomage]] is posible to generate this XML when extracting, and for rebuilding the rco using the XML as a layout
 
Based on [http://endlessparadigm.com/forum/showthread.php?tid=231 RCO File Format] (outdated) and [https://github.com/zingaburga/RCOMage/blob/master/src/rcofile.h rcomage source]
 
All the cells in the tables below colored in <span style="background:#ff9999;">red</span> are unknown or doubtful, and in <span style="background:#9999ff;">blue</span> are optional
 
==Header==
{| class="wikitable"
|-
|-
! 0x94
! Offset !! Length !! Name !! Example !! Notes !! Speculation
| {{cellcolors|#888888}} {{icon content ps3|50px}} <abbr title="pre-retail PS3 DECR firmware 0.83.002 probably same version for all 0.83 firmware series">0.83</abbr> || 2006 / 4 / 19 || 10 || none ||
|-
|-
! rowspan="2" | 0x95
| 0x00 || 0x04 || '''magic''' || FRP || In PS3 is "FRP" (big endian). In PSP is "PRF" (little endian). '''P'''laystation '''R'''esource '''F'''ile ||  
| {{cellcolors|#cccccc}} {{icon content psp|50px}} 2.70~2.71 || 2006 / 4 / 25 || 10 || rlz ||  
|-
|-
| {{cellcolors|#888888}} {{icon content ps3|50px}} <abbr title="pre-retail PS3 DECR firmware 0.84.001 probably same version for all 0.84 firmware series">0.84</abbr> || 2006 / 5 / 19 || 10 || none ||  
| 0x04 || 0x04 || '''version''' || 00 00 01 30 || named ''minFirmwareVer'' in [[Rcomage]], see {{talk}} page ||  
|-
|-
! 0x96
| 0x08 || 0x04 || {{cellcolors|#ff9999}} ''unknown'' || 00 00 00 00 || Always seems to be 0x00000000 ||
| {{cellcolors|#cccccc}} {{icon content psp|50px}} 2.80~3.40 || 2006 / 7 / 27 || 10 || rlz ? || the toc seems to be compressed in parts
|-
|-
! 0x97
| 0x0C || 0x04 || '''compress_header''' || 00 00 00 10 || 0x00=uncompressed<br>0x10=ZLIB<br>0x20=RLZ || 0x01=uncompressed + [[Talk:Rcomage | UMDflag]]<br>0x11=ZLIB + [[Talk:Rcomage | UMDflag]]<br>0x21=RLZ + [[Talk:Rcomage | UMDflag]]
| {{cellcolors|#888888}} {{icon content ps3|50px}} <abbr title="pre-retail PS3 DECR firmware 0.85.007 probably same version for all 0.85 firmware series">0.85</abbr>~[[1.54_CEX|1.54]] || 2006 / 11 / 11 || 10 || none ||
|-
|-
! 0x100
| 0x10 || 0x04 || '''info_table_offset''' || 00 00 00 A4 || usually 0xA4 ||  
| {{cellcolors|#cccccc}} {{icon content psp|50px}} 3.50~6.61 || 2007 / 5 / 31 || 10 || rlz ? ||  
|-
|-
! 0x102
| 0x14 || 0x04 || '''vsmx_table_offset''' || || ||  
| {{cellcolors|#888888}} {{icon content ps3|50px}} [[1.60_CEX|1.60]]~[[1.70_CEX|1.70]] || 2007 / 3 / 22 || 10 || ? ||  
|-
|-
! 0x104
| 0x18 || 0x04 || '''text_table_offset''' || || ||  
| {{cellcolors|#888888}} {{icon content ps3|50px}} [[1.80_CEX|1.80]]~[[1.82_CEX|1.82]] || 2007 / 5 / 24 || 10 || ? ||  
|-
|-
! 0x105
| 0x1C || 0x04 || '''sound_table_offset''' || || ||  
| {{cellcolors|#888888}} {{icon content ps3|50px}} [[1.90_CEX|1.90]]~[[1.94_CEX|1.94]] || 2007 / 7 / 24 || 10 || zlib ||  
|-
|-
! 0x106
| 0x20 || 0x04 || '''model_table_offset''' || ||  ||  
| {{cellcolors|#888888}} {{icon content ps3|50px}} [[2.00_CEX|2.00]]~[[2.17_CEX|2.17]] || 2007 / 11 / 8 || 10 || zlib ||  
|-
|-
! 0x107
| 0x24 || 0x04 || '''image_table_offset''' || ||  ||  
| {{cellcolors|#888888}} {{icon content ps3|50px}} [[2.20_CEX|2.20]]~[[2.80_CEX|2.80]] || 2008 / 3 / 25 || 10 || zlib ||  
|-
|-
! 0x108
| 0x28 || 0x04 || {{cellcolors|#ff9999}} ''unknown'' || FF FF FF FF || Always seems to be 0xFFFFFFFF || ''unknown_table_offset'' ?
| {{cellcolors|#888888}} {{icon content ps3|50px}} [[3.00_CEX|3.00]]~[[3.01_CEX|3.01]] || 2009 / 9 / 1 || 10 || zlib  ||  
|-
|-
! 0x110
| 0x2C || 0x04 || '''font_table_offset''' || ||  ||  
| {{cellcolors|#888888}} {{icon content ps3|50px}} [[3.10_CEX|3.10]]~[[3.74_CEX|3.74]] || 2009 / 11 / 19 || 10 || zlib ||  
|-
|-
! 0x120
| 0x30 || 0x04 || '''object_table_offset''' || ||  ||  
| {{cellcolors|#888888}} {{icon content ps3|50px}} [[4.00_CEX|4.00]]~[[4.25_CEX|4.25]] || 2011 / 11 / 29 || 10 || zlib ||  
|-
|-
! 0x130
| 0x34 || 0x04 || '''anim_table_offset''' || ||  ||  
| {{cellcolors|#888888}} {{icon content ps3|50px}} [[4.30_CEX|4.30]]~[[4.83_CEX|4.83]] || 2012 / 10 / 24 || 10 || zlib ||  
|}
|}


=RCO Structure=
{| class="wikitable"
Based on [http://endlessparadigm.com/forum/showthread.php?tid=231 RCO File Format] (outdated) and [https://github.com/zingaburga/RCOMage rcomage source]
|+strings
! Offset !! Length !! Name !! Example !! Notes !! Speculation
|-
| 0x38 || 0x04 || '''text_table_offset''' ||  ||  ||
|-
| 0x3C || 0x04 || '''text_table_length''' ||  ||  ||
|-
| 0x40 || 0x04 || '''label_table_offset''' ||  ||  ||
|-
| 0x44 || 0x04 || '''label_table_length''' ||  ||  ||
|-
| 0x48 || 0x04 || '''native_table_offset''' ||  ||  ||
|-
| 0x4C || 0x04 || '''native_table_length''' ||  ||  ||
|}


==Header==
{| class="wikitable"
{| class="wikitable" style="font-size:x-small;"
|+pointers
! Offset !! Length !! Name !! Example !! Notes !! Speculation
|-
| 0x50 || 0x04 || '''text_pointer_table_offset''' ||  ||  ||
|-
| 0x54 || 0x04 || '''text_pointer_table_length''' ||  ||  ||
|-
| 0x58 || 0x04 || '''image_pointer_table_offset''' ||  ||  ||
|-
| 0x5C || 0x04 || '''image_pointer_table_length''' ||  ||  ||
|-
| 0x60 || 0x04 || '''model_pointer_table_offset''' ||  ||  ||
|-
| 0x64 || 0x04 || '''model_pointer_table_length''' ||  ||  ||
|-
| 0x68 || 0x04 || '''sound_pointer_table_offset''' ||  ||  ||
|-
| 0x6C || 0x04 || '''sound_pointer_table_length''' ||  ||  ||
|-
| 0x70 || 0x04 || '''object_pointer_table_offset''' ||  ||  ||
|-
| 0x74 || 0x04 || '''object_pointer_table_length''' ||  ||  ||
|-
| 0x78 || 0x04 || '''anim_pointer_table_offset''' ||  ||  ||
|-
|-
! Offset !! Length !! Example !! Name !! Notes
| 0x7C || 0x04 || '''anim_pointer_table_length''' || || ||  
|-{{cellcolors|#666666|#ffffff}}
| 0x00 || 0x04 || 46 52 50 00 || '''prf_signature''' || In PS3 is "FRP" (big endian). In PSP is "PRF" (little endian)
|-{{cellcolors|#666666|#ffffff}}
| 0x04 || 0x04 || 00 00 00 97 || '''prf_version''' || See {{talk}} page
|-{{cellcolors|#666666|#ffffff}}
| 0x08 || 0x04 || <abbr title="Always seems to be 0x00000000">00 00 00 00</abbr> || {{cellcolors|#ff7777}} <abbr title="prf_minor_version ?">''prf_unk''</abbr> ||
|-{{cellcolors|#666666|#ffffff}}
| 0x0C || 0x04 || 00 00 00 00 || <abbr title="compress everything except the header and '''dat''' data tables to store files">'''prf_compress'''</abbr> || 0x00=none, 0x10=ZLIB, 0x20=RLZ, see {{talk}} page
|-{{cellcolors|#7777ff}}
| 0x10 || 0x04 || 00 00 00 A4 || '''toc_main_tree_offset''' ||
|-{{cellcolors|#8888ff}}
| 0x14 || 0x04 || FF FF FF FF || '''toc_script_tree_offset''' ||
|-{{cellcolors|#8888ff}}
| 0x18 || 0x04 || FF FF FF FF || '''toc_text_tree_offset''' ||
|-{{cellcolors|#8888ff}}
| 0x1C || 0x04 || FF FF FF FF || '''toc_sound_tree_offset''' ||
|-{{cellcolors|#8888ff}}
| 0x20 || 0x04 || FF FF FF FF || '''toc_model_tree_offset''' ||
|-{{cellcolors|#8888ff}}
| 0x24 || 0x04 || FF FF FF FF || '''toc_image_tree_offset''' ||
|-{{cellcolors|#8888ff}}
| 0x28 || 0x04 || <abbr title="Always seems to be 0xFFFFFFFF">FF FF FF FF</abbr> || {{cellcolors|#ff7777}} <abbr title="toc_unk_tree_offset ?">''toc_unk''</abbr> ||
|-{{cellcolors|#8888ff}}
| 0x2C || 0x04 || FF FF FF FF || '''toc_font_tree_offset''' ||
|-{{cellcolors|#8888ff}}
| 0x30 || 0x04 || 00 00 00 CC || '''toc_object_tree_offset''' ||
|-{{cellcolors|#8888ff}}
| 0x34 || 0x04 || FF FF FF FF || '''toc_anim_tree_offset''' ||
|-{{cellcolors|#66ff66}}
| 0x38 || 0x04 || 00 00 01 D4 || '''str_text_table_offset''' ||
|-{{cellcolors|#66ff66}}
| 0x3C || 0x04 || 00 00 00 00 || '''str_text_table_length''' ||
|-{{cellcolors|#99ff99}}
| 0x40 || 0x04 || 00 00 01 D4 || '''str_label_table_offset''' ||
|-{{cellcolors|#99ff99}}
| 0x44 || 0x04 || 00 00 00 1C || '''str_label_table_length''' ||
|-{{cellcolors|#bbffbb}}
| 0x48 || 0x04 || 00 00 01 F0 || '''str_event_table_offset''' ||
|-{{cellcolors|#bbffbb}}
| 0x4C || 0x04 || 00 00 00 04 || '''str_event_table_length''' ||
|-{{cellcolors|#770077}}
| 0x50 || 0x04 || FF FF FF FF || '''ptr_text_table_offset''' ||
|-{{cellcolors|#770077}}
| 0x54 || 0x04 || 00 00 00 00 || '''ptr_text_table_length''' ||
|-{{cellcolors|#880088}}
| 0x58 || 0x04 || FF FF FF FF || '''ptr_image_table_offset''' ||
|-{{cellcolors|#880088}}
| 0x5C || 0x04 || 00 00 00 00 || '''ptr_image_table_length''' ||
|-{{cellcolors|#990099}}
| 0x60 || 0x04 || FF FF FF FF || '''ptr_model_table_offset''' ||
|-{{cellcolors|#990099}}
| 0x64 || 0x04 || 00 00 00 00 || '''ptr_model_table_length''' ||
|-{{cellcolors|#aa00aa}}
| 0x68 || 0x04 || FF FF FF FF || '''ptr_sound_table_offset''' ||
|-{{cellcolors|#aa00aa}}
| 0x6C || 0x04 || 00 00 00 00 || '''ptr_sound_table_length''' ||
|-{{cellcolors|#bb00bb}}
| 0x70 || 0x04 || 00 00 01 CC || '''ptr_object_table_offset''' ||
|-{{cellcolors|#bb00bb}}
| 0x74 || 0x04 || 00 00 00 08 || '''ptr_object_table_length''' ||
|-{{cellcolors|#cc00cc}}
| 0x78 || 0x04 || FF FF FF FF || '''ptr_anim_table_offset''' ||
|-{{cellcolors|#cc00cc}}
| 0x7C || 0x04 || 00 00 00 00 || '''ptr_anim_table_length''' ||
|-{{cellcolors|#ccaa88}}
| 0x80 || 0x04 || FF FF FF FF || '''dat_image_table_offset''' ||
|-{{cellcolors|#ccaa88}}
| 0x84 || 0x04 || 00 00 00 00 || '''dat_image_table_length''' ||
|-{{cellcolors|#ddbb99}}
| 0x88 || 0x04 || FF FF FF FF || '''dat_sound_table_offset''' ||
|-{{cellcolors|#ddbb99}}
| 0x8C || 0x04 || 00 00 00 00 || '''dat_sound_table_length''' ||
|-{{cellcolors|#eeccaa}}
| 0x90 || 0x04 || FF FF FF FF || '''dat_model_table_offset''' ||  
|-{{cellcolors|#eeccaa}}
| 0x94 || 0x04 || 00 00 00 00 || '''dat_model_table_length''' ||
|-{{cellcolors|#ffddbb}}
| 0x98 || 0x0C || <abbr title="Always seems to be 0xFFFFFFFF 0xFFFFFFFF 0xFFFFFFFF">FF FF FF FF .. .</abbr> || {{cellcolors|#ff7777}} ''dat_unk'' ||  
|}
|}


*All offsets in the header are absolute
{| class="wikitable"
|+files
! Offset !! Length !! Name !! Example !! Notes !! Speculation
|-
| 0x80 || 0x04 || '''image_data_section_offset''' ||  ||  ||
|-
| 0x84 || 0x04 || '''image_data_section_length''' ||  ||  ||
|-
| 0x88 || 0x04 || '''sound_data_section_offset''' ||  ||  ||
|-
| 0x8C || 0x04 || '''sound_data_section_length''' ||  ||  ||
|-
| 0x90 || 0x04 || '''model_data_section_offset''' ||  ||  ||
|-
| 0x94 || 0x04 || '''model_data_section_length''' ||  ||  ||
|-
| 0x98 || 0x04 || {{cellcolors|#ff9999}} ''unknown'' ||  || Always seems to be 0xFFFFFFFF || ''unknown_data_section_offset'' ?
|-
| 0x9C || 0x04 || {{cellcolors|#ff9999}} ''unknown'' ||  || Always seems to be 0xFFFFFFFF || ''unknown_data_section_length'' ?
|-
| 0xA0 || 0x04 || {{cellcolors|#ff9999}} ''unknown'' ||  || Always seems to be 0xFFFFFFFF ||
|}


==TOC==
==info/main/xml table==
The TOC (table of contents) works as an index of all the .RCO contents, is composed by entries that follows a hierarchy of parent/children/siblings, it can be represented as an .XML file composed by '''elements''' and its '''attributes''' (see [http://www.w3schools.com/xml/xml_tree.asp XML Tree] and  [[RCOXML Coding]])
This area works as an index of all the .rco contents, when the area is compressed there are 12 bytes at the beginning with info about this compression, after it starts the info composed by entries that follows a hierarchy of parent/children/brother, every entry defines an element with its attributes. All this info can be represented as an xml file (this is what rcomage names an [[RCOXML Structure|RCOXML]])


===Element===
===Compression methods===
Every entry starts with an area of 0x28 length that represents an XML '''element''', it specifyes the '''entry_type''', a '''label''' identifyer for this entry (optional) and some info related with the TOC internal structure and its hierarchy relationship with other entries. All offset are relative
<!--initially was not compressed, and what is explained here seems to be obsolete, later it was compressed in sections, i guess in separated groups for each "tree" represented in the rcoxml the purpose of this is for the console to access one "tree" of the hierarchy independlly without the need to decompress the whole table, for performance-->


{| class="wikitable" style="font-size:small;"
When the table is compressed at beginning there are 3 values related with the compression (otherway if the table is not compressed this 3 values doesnt exists)
|+RCO TOC entry common area {{ed right|RCO TOC entry common area}}
{| class="wikitable"
! Offset !! Length !! <abbr title="Data type">Type</abbr> !! Name !! {{icon content psp|50px}} !! {{icon content ps3|50px}} !! Example (TOC) !! Example (XML) !! Notes
|-
|-
| {{RCO TOC entry common area}}
! Offset !! Length !! Name !! Example !! Notes !! Speculation
|-
|-
| 0x00 || 0x04 || '''lenPacked''' ||  || Packed size of all the table sections ||
|-
| 0x04 || 0x04 || '''lenUnpacked''' ||  || Unpacked size of all the table sections ||
|-
| 0x08 || 0x04 || '''lenLongestText''' ||  || length of the longest language's text data (unpacked)<br>if the compressed area doesn't contains any language text the value is 0 ||
|}
|}


===Attributes===
===Info entry===
Attributes are located after the element definition (at entry relative offset 0x28), only exists for the elements that uses attributes, each '''entry_type''' uses different attributes, are explained in detail in other wiki pages
====Common area====
{{RCO TOC entry types}}
Each entry starts with the entries, every entry has an area at beginning that is common, in it is specifyed the '''entry_type''', the values that comes after this area are dependant of the '''entry_type'''
{| class="wikitable"
|-
! Offset !! Length !! Name !! Example !! Notes !! Speculation
|-
| 0x00 || 0x01 || '''entry_type''' ||  || 0x1=MainTree<br>0x2=ScriptTree<br>0x3=TextTree<br>0x4=ImageTree<br>0x5=ModelTree<br>0x6=SoundTree<br>0x7=FontTree<br>0x8=ObjectTree<br>0x9=AnimTree ||
|-
| 0x01 || 0x01 || '''hierarchy_depth''' ||  || main table uses 0x01, may be used as a current entry depth value ||
|-
| 0x02 || 0x02 || {{cellcolors|#ff9999}} ''unknown'' ||  || Always seems to be 0x0000 ||
|-
| 0x04 || 0x04 || '''entry_label_offset''' ||  || Offset to the label (relative to the label table).  0xFFFFFFFF means the label doesn't exist for this entry ||
|-
| 0x08 || 0x04 || '''entry_header_size''' ||  || sizeof(RCOEntry) = 0x28 [ only used for entries with extra info (ie not "main" entries) ] || ''entry_common_area_size''
|-
| 0x0C || 0x04 || '''entry_size''' ||  || main tables (main/img etc) uses 0x28 here, or is this the length of current entry (not including subentries)? || ''entry_whole_size''
|-
| 0x10 || 0x04 || '''children_number''' ||  ||  ||
|-
| 0x14 || 0x04 || '''next_entry_offset''' ||  ||  || ''next_brother_entry_size''
|-
| 0x18 || 0x04 || '''previous_entry_offset''' ||  || this is usually 0x0 however (does make writing RCOs easier though :P I guess Sony's tools do something similar...) || ''previous_brother_entry_size''
|-
| 0x1C || 0x04 || '''parent_offset''' ||  || offset of this entry from parent table || ''entry_offset_relative_to_parent_start_offset''
|-
| 0x20 || 0x04 || {{cellcolors|#ff9999}} ''unknown'' ||  || Always seems to be 0x00000000 ||
|-
| 0x24 || 0x04 || {{cellcolors|#ff9999}} ''unknown'' ||  || Always seems to be 0x00000000 ||
|}
After the area common for all entries it starts the info specific for each '''entry_type''' explained below


Some of the attributes are a '''reference''' to load other entry
====(0x1) MainTree====
{{RCO TOC reference types}}
Main tree doesnt uses specific attributes, only uses the default ones explained above that indicates his position at top of the [[RCOXML Structure]] hierarchy and gives it a "label" name<!-- Doesn't have parent, and doesn't have any previous or next "brother", the number of childrens indicates how many of the '''entry_type''' explained below are under it (max number of childrens should be 8 for an .rco containing at least one of each) -->


===Example===
====(0x2) ScriptTree====
{{Boxframe1|content='''example placeholder'''
This is named "ScriptTree" for  simplification purposes, but is not actually a tree, only one [[VSMX]] file can be stored inside an RCO
*Example here following the other example of the header at top of the page, using color codes like the examples in {{talk}} page
*With '''MainTree-AnimTree-Animation-Fade''' (because i think is the minimal example that shows how trees are made and the entry_type "fade" that uses "standard" and "specific" attributes)
*And '''MainTree-ObjectTree-Page''' (because the animation needs to be linked to an object by using a reference, otherway rcomage will return an error when trying to compile it)
}}


==Pointer tables==
{| class="wikitable"
This area works as an external index of the TOC, stores <abbr title="unlike in TOC table that are relative">absolute</abbr> pointers to all the chiildren of the "tree" TOC entries, is composed by 6 tables in this order:
|-
*'''text_tree_pointer_table'''
! Offset !! Length !! Name !! Example !! Notes !! Speculation
*'''image_tree_pointer_table'''
|-
*'''model_tree_pointer_table'''
| 0x00 || 0x04 || '''file_offset''' ||  || VSMX file offset, relative to the start offset of the vsmx data table (always 0) ||
*'''sound_tree_pointer_table'''
|-
*'''object_tree_pointer_table'''
| 0x04 || 0x04 || '''file_size''' ||  || VSMX file length ||
*'''anim_tree_pointer_table'''
|}


====(0x3) TextTree====
"TextTree" could be renamed to LanguageTree, is more intuitive, the point is every entry here is the "parent" of several string texts, but the entry itself is not a text (is the parent of a group of texts), so is better to use a name more abstract like "LanguageTree"


*Every pointer is 0x04 bytes length
For a [[Languages|Language]] first are specified the '''language_id''' and the number of "children" text strings
*The other "trees" children that doesnt uses a pointer table are: MainTree (is not needed because its children are the other "trees"), ScriptTree (because doesnt have children), and FontTree because ?????<!--i cant imagine why but there must be a good reason-->
{| class="wikitable"
*The existence of this area with pointers seems to be related with the fact that is posible to use a whole file compression (by setting it in the header at offset 0x0C) that compresses the TOC. Also when loading the .RCO file in the RAM of the console probably is "cropped" in parts, the TOC is decompresed and kept in a memory area with the other TOC's from the other RCO files (for fast selective access to the .RCO contents, and for performance) and is posible to read the relative offsets directlly from the TOC's and deprecate the absolute offsets from the pointers tables<!--or something like that, if someone can explain it please help rewriting this-->
|-
! Offset !! Length !! Name !! Example !! Notes !! Speculation
|-
| 0x00 || 0x02 || '''language_id''' ||  || 0x00=Japanese<br>0x01=English (United States)<br>0x02=French<br>0x03=Spanish (Spain)<br>0x04=German<br>0x05=Italian<br>0x06=Dutch<br>0x07=Portuguese (Portugal)<br>0x08=Russian<br>0x09=Korean<br>0x0A=Chinese (Traditional)<br>0x0B=Chinese (Simplified)<br>0x0C=Finnish<br>0x0D=Swedish<br>0x0E=Danish<br>0x0F=Norwegian<br>0x10=Polish<br>0x11=Portuguese (Brazil)<br>0x12=English (United Kingdom)<br>0x13=Turkish ||
|-
| 0x02 || 0x02 || '''strings_format''' ||  || 0x00=UTF8<br>0x01=UTF16<br>0x02=UTF32 ||
|-
| 0x04 || 0x04 || '''strings_number''' ||  || number of text strings for this '''language_id''' ||
|}


==String tables==
Now for every '''strings_number''' are repeated 12 bytes to define every string that are references to other tables
This area stores the text strings used by the TOC entries, is composed by 3 tables in this order:
{| class="wikitable"
*'''text_string_table''' (to store localized language texts from TextTree entries)
|-
*'''label_string_table''' (to store the labels of all the entries that uses labels)
! Offset !! Length !! Name !! Example !! Notes !! Speculation
*'''event_string_table''' (to store the values of the attributes used by some entries, either "native" or "script" events)
|-
| 0x00 || 0x04 || '''label_offset''' ||  || Offset to label, relative of the label table ||
|-
| 0x04 || 0x04 || '''string_length''' ||  || Length of the text ||
|-
| 0x08 || 0x04 || '''string_offset''' ||  || Offset of the text, relative to the text data start address ||
|}
 
====(0x4) ImageTree====
The values marked in red are optional, the presence of the '''unknown''' specific for PS3 can be deduced based on the "rco version" in the rco header, only exists in PS3 RCO's (PSP doesnt uses it). See [[Talk:Rcomage|rcomage talk page]]. The presence of the other optional value '''file_uncompressed_size''' can be deduced by reading the entry itself


The '''file_compression''' feature adds a compression layer over the file format (pointless for image formats that are nativelly compressed like GIM or JPG)


*Strings are null terminated (ends in 0x00)
{| class="wikitable"
*Strings are aligned to 4 bytes boundary (padding at the end of every string when needed)
|-
! Offset !! Length !! Name !! Example !! Notes !! Speculation
|-
| 0x00 || 0x02 || '''file_format''' ||  || 0x0=PNG<br>0x1=JPEG<br>0x2=TIFF<br>0x3=GIF<br>0x4=BMP<br>0x5=GIM ||
|-
| 0x02 || 0x02 || '''file_compression''' ||  || 0x0=NONE<br>0x1=ZLIB<br>0x2=RLZ ||
|-
| 0x04 || 0x04 || '''file_size''' ||  || either compressed or uncompressed, this is the final size of the file stored inside the rco ||
|-
| 0x08 || 0x04 || '''file_offset''' ||  ||  ||
|-
| 0x0C || 0x04 || {{cellcolors|#ff9999}} ''unknown'' ||  || PS3 RCOs seem to have this extra value - probably something to do with planes/frames?? usually 0x1 ||
|-
| 0x10 || 0x04 || {{cellcolors|#9999ff}} '''file_uncompressed_size''' ||  || Doesn't exist if '''file_compression''' = '''NONE''', for PSP is located 4 bytes before because the previous value doesn't exists ||
|}


==Data tables==
====(0x5) ModelTree====
This area stores files that can be compressed individually (or not) as specifyed by the attributes of some entries in the TOC, is composed by 3 tables in this order:
ModelTree uses the same values than ImageTree with a couple of differences, the table is repeated here for comparison purposes
*'''image_data_table''' (to store the files used by ImageTree entries)
*'''sound_data_table''' (to store the files used by SoundTree entries)
*'''model_data_table''' (to store the files used by ModelTree entries)


The presence of the '''unknown''' (specific for PS3) is completlly speculative because never has been found a GMO file used on PS3 official firmware, is not even known if PS3 firmware has some function able to manage GMO files


*Files are aligned to 4 bytes boundary (padding at the end of every file when needed)
{| class="wikitable"
|-
! Offset !! Length !! Name !! Example !! Notes !! Speculation
|-
| 0x00 || 0x02 || '''file_format''' ||  || 0x0=GMO ||
|-
| 0x02 || 0x02 || '''file_compression''' ||  || 0x0=NONE<br>0x1=ZLIB<br>0x2=RLZ ||
|-
| 0x04 || 0x04 || '''file_size''' ||  || either compressed or uncompressed, this is the final size of the file stored inside the rco ||
|-
| 0x08 || 0x04 || '''file_offset''' ||  || Offset of data relative to the beginning of the image data section ||
|-
| 0x0C || 0x04 || {{cellcolors|#ff9999}} ''unknown'' ||  || PS3 RCOs seem to have this extra value - probably something to do with planes/frames?? usually 0x1 ||
|-
| 0x10 || 0x04 || {{cellcolors|#9999ff}} '''file_uncompressed_size''' ||  || Doesn't exist if '''file_compression''' = '''NONE''', for PSP is located 4 bytes before because the previous value doesn't exists ||
|}


=RCO compression methods=
====(0x6) SoundTree====
<!--initially was not compressed, and what is explained here seems to be obsolete, later it was compressed in sections, i guess in separated groups for each "tree" represented in the rcoxml the purpose of this is for the console to access one "tree" of the hierarchy independlly without the need to decompress the whole table, for performance-->
{| class="wikitable"
|-
! Offset !! Length !! Name !! Example !! Notes !! Speculation
|-
| 0x00 || 0x02 || '''file_format''' ||  || <span style="background:#ff9999;">0x0=''unknown''</span><br>0x1=VAG ||
|-
| 0x02 || 0x02 || '''audio_channels''' ||  || 0x1=MONO<br>0x2=STEREO ||
|-
| 0x04 || 0x04 || '''file_size''' ||  || either one or two channels, this is the final size of the file stored inside the rco ||
|-
| 0x08 || 0x04 || '''file_offset''' ||  || Offset of the sound data to the beginning of the sound data section ||
|-
| 0x0C || 0x04 || '''left_channel_size''' ||  || <!--If '''audio_channels''' = '''MONO''' this is the size of the whole audio file, if '''STEREO''' -->This is the size of left channel file ||
|-
| 0x10 || 0x04 || '''left_channel_offset''' ||  || Offset of left channel VAG to the beginning of the sound data section ||
|-
| 0x0C || 0x04 || {{cellcolors|#9999ff}} '''right_channel_size''' ||  || Only exists if '''audio_channels''' = '''STEREO''' ||
|-
| 0x10 || 0x04 || {{cellcolors|#9999ff}} '''right_channel_offset''' ||  || Only exists if '''audio_channels''' = '''STEREO''' ||
|}


When the TOC table is compressed at beginning there are 3 values related with the compression (otherway if the table is not compressed this 3 values doesnt exists)
====(0x7) FontTree====
{| class="wikitable"
{| class="wikitable"
|-
|-
! Offset !! Length !! Name !! Example !! Notes !! Speculation
! Offset !! Length !! Name !! Example !! Notes !! Speculation
|-
|-
| 0x00 || 0x04 || '''lenPacked''' ||  || Packed size of all the table sections ||  
| 0x00 || 0x02 || {{cellcolors|#ff7777}} '''file_format''' ||  || 0x1=? ||
|-
| 0x02 || 0x02 || {{cellcolors|#ff7777}} '''file_compression''' ||  || 0x0=NONE ?<br>0x1=ZLIB ?<br>0x2=RLZ ? ||  
|-
|-
| 0x04 || 0x04 || '''lenUnpacked''' ||  || Unpacked size of all the table sections ||  
| 0x04 || 0x04 || {{cellcolors|#ff7777}} ''unknown'' ||  || || ''file_size'' ?
|-
|-
| 0x08 || 0x04 || '''lenLongestText''' ||  || length of the longest language's text data (unpacked)<br>if the compressed area doesn't contains any language text the value is 0 ||
| 0x08 || 0x04 || {{cellcolors|#ff7777}} ''unknown'' ||  || || ''file_offset'' ?
|}
|}


=VSH access to RCO contents=
====(0x8) ObjectTree====
See the [[VSH_Exports#paf "paf" VSH exports]], most of them uses the internal "official" names of lot of stuff related with RCO (i guess there are a lot of names used in this wiki that was taken from rcomage or by deduction that should be replaced by the official names), and can help to understand how the firmware processes and accesses to the internal content of .RCO files (it can help a lot to any tool involved in processing .RCO files to make it most efficient, simple and accurate posible)
====(0x9) AnimTree====
*Related with the internal RCO [http://www.w3schools.com/xml/dom_intro.asp | XML DOM structure]
**PAF_Resource_DOMGetNodeChildByID, PAF_Resource_DOMGetNodeChildByPos, PAF_Resource_DOMGetNodeData, PAF_Resource_DOMGetNodeFirstChild, PAF_Resource_DOMGetNodeID, PAF_Resource_DOMGetNodeNext, PAF_Resource_DOMGetNodeType, PAF_Resource_GetPageNodeByID, PAF_Resource_GetWidgetNodeByID, PAF_Resource_ResolveRefNode, PAF_Resource_ResolveRefString, PAF_Resource_ResolveRefWString (It seems some are missing though)
*Related with [[RCOXML Objects]]
**This seems to be the complete list of [[RCOXML Objects]] internal names (It seems some are missing though)
***0x546B3D02 returns "PhWidget", 0x41BBFE5E returns "PhScene", 0x10DEDCC7 returns "PhPlane", 0xE36C18F5 returns "PhPlaneDiv", 0x24A5BD6B returns "PhButton", 0xB7DFCE90 returns "PhText", 0x9207F4 returns "PhScroll", 0xBA6D149A returns "PhLabelPrim", 0xC88CA4B2 returns "PhLevelMeter", 0xE801C345 returns "PhProgress", 0xBF66BF2D returns "PhCheckBox", 0x703117AD returns "PhXmBar", 0x4FF7B8A9 returns "PhXmList", 0xC84FD77B returns "PhXmItem", 0x4C36ABBB returns "PhItemSpin", 0xCA9160F6 returns "PhNumSpin", 0x59A11C82 returns "PhNumSpin", 0xD64EDE7C returns "PhList", 0xF7630798 returns "PhInfoList", 0xA98865F8 returns "PhMenuList", 0x90F4F801 returns "PhCheckBoxList", 0xDDD4ACF6 returns "PhLabelText", 0x545D47A2 returns "PhClock", 0x3806365F returns "PhIPAddr"
**The names of the attributes ordered by groups (there are a lot)
***As example: 0xDEF981C4 _ZN3paf8PhXmList7FocusInEf, 0x814B3D90 _ZN3paf8PhXmList8FocusOutEf this two seems to be the attributes '''FocusOut''' and '''FocusIn''' from the object '''XmList'''


{{File Formats}}
{{File Formats}}
<noinclude>[[Category:Main]]</noinclude>
<noinclude>[[Category:Main]]</noinclude>
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