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bnnm 2022-06-19 19:37:23 +02:00
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17
doc/USAGE.md
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@ -783,3 +783,20 @@ You can use this python script to autogenerate one `.txtp` per virtual-txtp:
https://github.com/vgmstream/vgmstream/tree/master/cli/tools/txtp_dumper.py
Drag and drop the `.m3u`, or any text file with .txtp (it has CLI options
to control output too).
## Sequences and streams
Roughly, there are two types of game audio:
- streams: prerecorded audio where all instruments are pre-mixed into a single
file, often compressed with some custom format.
- sequences: series of instrument notes, typically in MIDI-like formats with
a bank of instrument sounds.
As the name implies, vgmstream plays "streams". Old games mainly use sequences
(very small and more dynamic), while other games use streams (easier to handle
but lot bigger and sometimes CPU-intensive).
vgmstream's internals are tailored to play streams so, in other words, it's not
possible to add support for sequenced audio unless massive changes were done,
basically becoming another program entirely. There are other projects better
suited for playing sequences.

4
src/meta/txtp.c
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@ -290,7 +290,7 @@ static int parse_entries(txtp_header* txtp, STREAMFILE* sf) {
else
temp_sf = open_streamfile_by_filename(sf, filename); /* from current path */
if (!temp_sf) {
VGM_LOG("TXTP: cannot open streamfile for %s\n", filename);
vgm_logi("TXTP: cannot open %s\n", filename);
goto fail;
}
temp_sf->stream_index = txtp->entry[i].subsong;
@ -298,7 +298,7 @@ static int parse_entries(txtp_header* txtp, STREAMFILE* sf) {
txtp->vgmstream[i] = init_vgmstream_from_STREAMFILE(temp_sf);
close_streamfile(temp_sf);
if (!txtp->vgmstream[i]) {
VGM_LOG("TXTP: cannot open vgmstream for %s#%i\n", filename, txtp->entry[i].subsong);
vgm_logi("TXTP: cannot parse %s#%i\n", filename, txtp->entry[i].subsong);
goto fail;
}