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Update doc
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doc/TXTP.md
143
doc/TXTP.md
@ -5,29 +5,73 @@ TXTP is a text file with commands, to improve support for games using audio in c
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Simply create a file named `(filename).txtp`, and inside write the commands described below.
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## TXTP features
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## TXTP FEATURES
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### Play separate intro + loop files together as a single track
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- __Ratchet & Clank (PS2)__: _bgm01.txtp_
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Some games clumsily loop audio by using multiple full file "segments":
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__Ratchet & Clank (PS2)__: _bgm01.txtp_
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```
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# define several files to play as one (there is no limit)
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# define 2 or more segments to play as one
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BGM01_BEGIN.VAG
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BGM01_LOOPED.VAG
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# multi-files must define loops
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# segments must define loops
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loop_start_segment = 2 # 2nd file start
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loop_end_segment = 2 # optional, default is last
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```
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Channel number must be equal, mixing sample rates is ok (uses first).
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#channel number must be equal, mixing sample rates is ok (uses first)
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If your loop segment has proper loops you want to keep, you can use:
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```
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BGM_SUMMON_0001_01-Intro.hca
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BGM_SUMMON_0001_01-Intro2.hca
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BGM_SUMMON_0001_01.hca
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loop_start_segment = 3
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loop_mode = keep # loops in 3rd file's loop_start to 3rd file's loop_end
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```
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```
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bgm_intro.adx
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bgm_main.adx
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bgm_main2.adx
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loop_start_segment = 2
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loop_end_segment = 3
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loop_mode = keep # loops in 2nd file's loop_start to 3rd file's loop_end
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```
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### Multilayered songs
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TXTP "layers" play songs with channels/parts divided into files as one (for example main melody + vocal track).
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__Nier Automata__: _BGM_0_012_song2.txtp_
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```
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# mix dynamic sections (2ch * 2)
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BGM_0_012_04.wem
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BGM_0_012_07.wem
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mode = layers
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```
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__Life is Strange__: _BIK_E1_6A_DialEnd.txtp_
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```
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# bik multichannel isn't autodetectable so must mix manually (1ch * 3)
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BIK_E1_6A_DialEnd_00000000.audio.multi.bik#1
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BIK_E1_6A_DialEnd_00000000.audio.multi.bik#2
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BIK_E1_6A_DialEnd_00000000.audio.multi.bik#3
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mode = layers
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```
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Note that the number of channels is the sum of all layers, so three 2ch layers play as a 6ch file.
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### Minifiles for bank formats without splitters
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- __Super Robot Taisen OG Saga - Masou Kishin III - Pride of Justice (Vita)__: _bgm_12.txtp_
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__Super Robot Taisen OG Saga - Masou Kishin III - Pride of Justice (Vita)__: _bgm_12.txtp_
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```
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# select subsong 12
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bigfiles/bgm.sxd2#12 #relative paths are ok too for TXTP
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#bigfiles/bgm.sxd2#s12 # "sN" is al alt for subsong
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#bigfiles/bgm.sxd2#s12 # "sN" is alt for subsong
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# single files loop normally by default
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# if loop segment is defined it forces a full loop (0..num_samples)
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@ -35,7 +79,7 @@ bigfiles/bgm.sxd2#12 #relative paths are ok too for TXTP
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```
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### Play segmented subsongs as one
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- __Prince of Persia Sands of Time__: _song_01.txtp_
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__Prince of Persia Sands of Time__: _song_01.txtp_
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```
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# can use ranges ~ to avoid so much C&P
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amb_fx.sb0#254
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@ -48,13 +92,13 @@ loop_start_segment = 3
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### Channel mask for channel subsongs/layers
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- __Final Fantasy XIII-2__: _music_Home_01.ps3.txtp_
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__Final Fantasy XIII-2__: _music_Home_01.ps3.txtp_
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```
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#plays channels 1 and 2 = 1st subsong
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music_Home.ps3.scd#c1,2
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```
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- __Final Fantasy XIII-2__: _music_Home_02.ps3.txtp_
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__Final Fantasy XIII-2__: _music_Home_02.ps3.txtp_
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```
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#plays channels 3 and 4 = 2nd subsong
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music_Home.ps3.scd#c3,4
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@ -63,48 +107,10 @@ music_Home.ps3.scd#c3,4
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```
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### Multilayered songs
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TXTP "layers" play songs with channels/parts divided into files as one.
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- __Nier Automata__: _BGM_0_012_song2.txtp_
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```
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# mix dynamic sections (2ch * 2)
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BGM_0_012_04.wem
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BGM_0_012_07.wem
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mode = layers
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```
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- __Life is Strange__: _BIK_E1_6A_DialEnd.txtp_
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```
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# bik multichannel isn't autodetectable so must mix manually (1ch * 3)
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BIK_E1_6A_DialEnd_00000000.audio.multi.bik#1
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BIK_E1_6A_DialEnd_00000000.audio.multi.bik#2
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BIK_E1_6A_DialEnd_00000000.audio.multi.bik#3
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mode = layers
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```
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Note that the number of channels is the sum of all layers, so three 2ch layers play as a 6ch file.
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### Channel swapping/mapping
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TXTP can swap channels for custom channel mappings. It does "swapping" rather than simpler "mapping" since vgmstream can't read a format's mappings or guess which channel is which. Format is:
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```
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#ch1 = first
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file1.ext#m2-3 # "FL BL FR BR" to "FL FR BL BR"
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#do note the order specified affects swapping
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file2.ext#m2-3,4-5,4-6 # ogg "FL CN FR BL BR SB" to wav "FL FR CN SB BL BR"
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```
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Note that channel masking applies after mappings.
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### Custom play settings
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Those setting should override player's defaults if set (except "loop forever"). They are equivalent to some test.exe options.
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- __God Hand (PS2)__: _boss2_3ningumi_ver6.txtp_ (each line is a separate TXTP)
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__God Hand (PS2)__: _boss2_3ningumi_ver6.txtp_ (each line is a separate TXTP)
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```
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# set number of loops
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boss2_3ningumi_ver6.adx#l3
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@ -136,6 +142,19 @@ boss2_3ningumi_ver6.adx#l1.5#d1#f5
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For segments and layers the first file defines looping options.
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### Force sample rate
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A few games set a sample rate value in the header but actually play with other (applying some of pitch or just forcing it)
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__Super Paper Mario (Wii)__
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```
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btl_koopa1_44k_lp.brstm#h22050 #in hz
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```
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__Patapon (PSP)__
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```
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ptp_btl_bgm_voice.sgd#s1#h11050
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```
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### Force plugin extensions
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vgmstream supports a few common extensions that confuse plugins, like .wav/ogg/aac/opus/etc, so for them those extensions are disabled and are expected to be renamed to .lwav/logg/laac/lopus/etc. TXTP can make plugins play those disabled extensions, since it calls files directly by filename.
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@ -175,7 +194,7 @@ commands = #s12
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```
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## TXTP parsing issues
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## TXTP PARSING ISSUES
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*Commands* can be chained, but must not be separated by a space (everything after space may be ignored):
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```
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bgm bank.sxd2#s12#c1,2 #spaces + comment after commands is ignored
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@ -193,34 +212,14 @@ loop_start_segment = 1 #spaces surrounding value are ignored
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```
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```
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bgm.sxd2
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config = #s12#c1,2 #must not have spaces once value starts until end
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commands = #s12#c1,2 #must not have spaces once value starts until end
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```
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The parser is very simplistic and fairly lax, though may be erratic with edge cases or behave unexpectedly due to unforeseen use-cases and bugs. As filenames may contain spaces or #, certain name patterns could fool it too. Keep in mind this while making .txtp files.
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## Mini TXTP
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## MINI-TXTP
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To simplify TXTP creation, if the .txtp is empty (0 bytes) its filename is used directly as a command. Note that extension is also included (since vgmstream needs a full filename).
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- _bgm.sxd2#12.txtp_: plays subsong 12
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- _Ryoshima Coast 1 & 2.aix#c1,2.txtp_: channel mask
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- _boss2_3ningumi_ver6.adx#l2#F.txtp_: loop twice then play song end file normally
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- etc
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## Other examples
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_Join "segments" (intro+body):_
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```
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#files must have same number of channels
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Song001_intro.ogg
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Song001_body.ogg
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loop_start_segment = 2
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```
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_Join "layers" (ex. main+vocals):_
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```
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#files must have same number of samples
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Song001_main.ogg
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Song001_vocals.ogg
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mode = layers
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```
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