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Change #6684: Cutting point overrides for music base sets 

This improves bad looping of title screen song from Windows TTD, and fixes
a long silence at the end of "Can't get there from here" from Windows TTD.
This commit is contained in:
Niels Martin Hansen 2018-03-04 23:34:02 +01:00 committed by Michael Lutz
parent 836d25e738
commit 276192f714
6 changed files with 56 additions and 19 deletions
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12
bin/baseset/orig_win.obm
View File

@ -142,5 +142,17 @@ GM_TT19.GM = Funk Central
GM_TT20.GM = Jammit
GM_TT21.GM = Movin' On
; MIDI timecodes where the playback should attemp to start and stop short.
; This is to allow fixing undesired silences in original MIDI files.
; However not all music drivers may support this.
[timingtrim]
; Theme has two beats silence at the beginning which prevents clean looping.
GM_TT00.GM = 768:53760
; Can't Get There From Here from the Windows version has a long silence at the end,
; followed by a solo repeat. This isn't in the original DOS version music and is likely
; unintentional from the people who converted the music from the DOS version.
; Actual song ends after measure 152.
GM_TT10.GM = 0:235008
[origin]
default = You can find it on your Transport Tycoon Deluxe CD-ROM.

12
media/baseset/orig_win.obm
View File

@ -90,5 +90,17 @@ GM_TT19.GM = Funk Central
GM_TT20.GM = Jammit
GM_TT21.GM = Movin' On
; MIDI timecodes where the playback should attemp to start and stop short.
; This is to allow fixing undesired silences in original MIDI files.
; However not all music drivers may support this.
[timingtrim]
; Theme has two beats silence at the beginning which prevents clean looping.
GM_TT00.GM = 768:53760
; Can't Get There From Here from the Windows version has a long silence at the end,
; followed by a solo repeat. This isn't in the original DOS version music and is likely
; unintentional from the people who converted the music from the DOS version.
; Actual song ends after measure 152.
GM_TT10.GM = 0:235008
[origin]
default = You can find it on your Transport Tycoon Deluxe CD-ROM.

2
src/base_media_base.h
View File

@ -301,6 +301,8 @@ struct MusicSongInfo {
const char *filename; ///< file on disk containing song (when used in MusicSet class, this pointer is owned by MD5File object for the file)
MusicTrackType filetype; ///< decoder required for song file
int cat_index; ///< entry index in CAT file, for filetype==MTT_MPSMIDI
int override_start; ///< MIDI ticks to skip over in beginning
int override_end; ///< MIDI tick to end the song at (0 if no override)
};
/** All data of a music set. */

17
src/music.cpp
View File

@ -125,6 +125,7 @@ bool MusicSet::FillSetDetails(IniFile *ini, const char *path, const char *full_f
this->num_available = 0;
IniGroup *names = ini->GetGroup("names");
IniGroup *catindex = ini->GetGroup("catindex");
IniGroup *timingtrim = ini->GetGroup("timingtrim");
for (uint i = 0, j = 1; i < lengthof(this->songinfo); i++) {
const char *filename = this->files[i].filename;
if (names == NULL || StrEmpty(filename)) {
@ -150,15 +151,16 @@ bool MusicSet::FillSetDetails(IniFile *ini, const char *path, const char *full_f
this->songinfo[i].filetype = MTT_STANDARDMIDI;
}
const char *trimmed_filename = filename;
/* As we possibly add a path to the filename and we compare
* on the filename with the path as in the .obm, we need to
* keep stripping path elements until we find a match. */
for (const char *p = filename; p != NULL; p = strchr(p, PATHSEPCHAR)) {
for (; trimmed_filename != NULL; trimmed_filename = strchr(trimmed_filename, PATHSEPCHAR)) {
/* Remove possible double path separator characters from
* the beginning, so we don't start reading e.g. root. */
while (*p == PATHSEPCHAR) p++;
while (*trimmed_filename == PATHSEPCHAR) trimmed_filename++;
item = names->GetItem(p, false);
item = names->GetItem(trimmed_filename, false);
if (item != NULL && !StrEmpty(item->value)) break;
}
@ -173,6 +175,15 @@ bool MusicSet::FillSetDetails(IniFile *ini, const char *path, const char *full_f
this->num_available++;
this->songinfo[i].tracknr = j++;
item = timingtrim->GetItem(trimmed_filename, false);
if (item != NULL && !StrEmpty(item->value)) {
const char *endpos = strchr(item->value, ':');
if (endpos != NULL) {
this->songinfo[i].override_start = atoi(item->value);
this->songinfo[i].override_end = atoi(endpos + 1);
}
}
}
}
return ret;

20
src/music/dmusic.cpp
View File

@ -723,14 +723,6 @@ static void MidiThreadProc(void *)
while (current_block < current_file.blocks.size()) {
MidiFile::DataBlock &block = current_file.blocks[current_block];
/* check that block is not in the future */
REFERENCE_TIME playback_time = current_time - playback_start_time;
if (block.realtime * MIDITIME_TO_REFTIME > playback_time + 3 *_playback.preload_time * MS_TO_REFTIME) {
/* Stop the thread loop until we are at the preload time of the next block. */
next_timeout = Clamp(((int64)block.realtime * MIDITIME_TO_REFTIME - playback_time) / MS_TO_REFTIME - _playback.preload_time, 0, 1000);
DEBUG(driver, 9, "DMusic thread: Next event in %u ms (music %u, ref %lld)", next_timeout, block.realtime * MIDITIME_TO_REFTIME, playback_time);
break;
}
/* check that block isn't at end-of-song override */
if (current_segment.end > 0 && block.ticktime >= current_segment.end) {
if (current_segment.loop) {
@ -743,6 +735,14 @@ static void MidiThreadProc(void *)
next_timeout = 0;
break;
}
/* check that block is not in the future */
REFERENCE_TIME playback_time = current_time - playback_start_time;
if (block.realtime * MIDITIME_TO_REFTIME > playback_time + 3 *_playback.preload_time * MS_TO_REFTIME) {
/* Stop the thread loop until we are at the preload time of the next block. */
next_timeout = Clamp(((int64)block.realtime * MIDITIME_TO_REFTIME - playback_time) / MS_TO_REFTIME - _playback.preload_time, 0, 1000);
DEBUG(driver, 9, "DMusic thread: Next event in %u ms (music %u, ref %lld)", next_timeout, block.realtime * MIDITIME_TO_REFTIME, playback_time);
break;
}
/* Timestamp of the current block. */
block_time = playback_start_time + block.realtime * MIDITIME_TO_REFTIME;
@ -1232,8 +1232,8 @@ void MusicDriver_DMusic::PlaySong(const MusicSongInfo &song)
if (!_playback.next_file.LoadSong(song)) return;
_playback.next_segment.start = 0;
_playback.next_segment.end = 0;
_playback.next_segment.start = song.override_start;
_playback.next_segment.end = song.override_end;
_playback.next_segment.loop = false;
_playback.do_start = true;

12
src/music/win32_m.cpp
View File

@ -209,10 +209,6 @@ void CALLBACK TimerCallback(UINT uTimerID, UINT, DWORD_PTR dwUser, DWORD_PTR, DW
while (_midi.current_block < _midi.current_file.blocks.size()) {
MidiFile::DataBlock &block = _midi.current_file.blocks[_midi.current_block];
/* check that block is not in the future */
if (block.realtime / 1000 > playback_time) {
break;
}
/* check that block isn't at end-of-song override */
if (_midi.current_segment.end > 0 && block.ticktime >= _midi.current_segment.end) {
if (_midi.current_segment.loop) {
@ -223,6 +219,10 @@ void CALLBACK TimerCallback(UINT uTimerID, UINT, DWORD_PTR dwUser, DWORD_PTR, DW
}
break;
}
/* check that block is not in the future */
if (block.realtime / 1000 > playback_time) {
break;
}
byte *data = block.data.Begin();
size_t remaining = block.data.Length();
@ -315,8 +315,8 @@ void MusicDriver_Win32::PlaySong(const MusicSongInfo &song)
return;
}
_midi.next_segment.start = 0;
_midi.next_segment.end = 0;
_midi.next_segment.start = song.override_start;
_midi.next_segment.end = song.override_end;
_midi.next_segment.loop = false;
DEBUG(driver, 2, "Win32-MIDI: PlaySong: setting flag");