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-rw-r--r--engines/scumm/imuse_digi/dimuse.cpp29
-rw-r--r--engines/scumm/imuse_digi/dimuse.h20
-rw-r--r--engines/scumm/imuse_digi/dimuse_track.cpp16
3 files changed, 49 insertions, 16 deletions
diff --git a/engines/scumm/imuse_digi/dimuse.cpp b/engines/scumm/imuse_digi/dimuse.cpp
index c249dd57a9..e844363043 100644
--- a/engines/scumm/imuse_digi/dimuse.cpp
+++ b/engines/scumm/imuse_digi/dimuse.cpp
@@ -76,6 +76,21 @@ IMuseDigital::~IMuseDigital() {
free(_audioNames);
}
+int32 IMuseDigital::makeMixerFlags(int32 flags) {
+ int32 mixerFlags = 0;
+ if (flags & kFlagUnsigned)
+ mixerFlags |= Audio::Mixer::FLAG_UNSIGNED;
+ if (flags & kFlag16Bits)
+ mixerFlags |= Audio::Mixer::FLAG_16BITS;
+ if (flags & kFlagLittleEndian)
+ mixerFlags |= Audio::Mixer::FLAG_LITTLE_ENDIAN;
+ if (flags & kFlagStereo)
+ mixerFlags |= Audio::Mixer::FLAG_STEREO;
+ if (flags & kFlagReverseStereo)
+ mixerFlags |= Audio::Mixer::FLAG_REVERSE_STEREO;
+ return mixerFlags;
+}
+
void IMuseDigital::resetState() {
_curMusicState = 0;
_curMusicSeq = 0;
@@ -122,7 +137,7 @@ void IMuseDigital::saveOrLoad(Serializer *ser) {
MKLINE(Track, soundType, sleInt32, VER(31)),
MKLINE(Track, iteration, sleInt32, VER(31)),
MKLINE(Track, mod, sleInt32, VER(31)),
- MKLINE(Track, mixerFlags, sleInt32, VER(31)),
+ MKLINE(Track, flags, sleInt32, VER(31)),
MK_OBSOLETE(Track, mixerVol, sleInt32, VER(31), VER(42)),
MK_OBSOLETE(Track, mixerPan, sleInt32, VER(31), VER(42)),
MKLINE(Track, compressed, sleByte, VER(45)),
@@ -171,25 +186,25 @@ void IMuseDigital::saveOrLoad(Serializer *ser) {
int channels = _sound->getChannels(track->soundHandle);
int freq = _sound->getFreq(track->soundHandle);
track->iteration = freq * channels;
- track->mixerFlags = 0;
+ track->flags = 0;
if (channels == 2)
- track->mixerFlags = Audio::Mixer::FLAG_STEREO | Audio::Mixer::FLAG_REVERSE_STEREO;
+ track->flags = kFlagStereo | kFlagReverseStereo;
if ((bits == 12) || (bits == 16)) {
- track->mixerFlags |= Audio::Mixer::FLAG_16BITS;
+ track->flags |= kFlag16Bits;
track->iteration *= 2;
} else if (bits == 8) {
- track->mixerFlags |= Audio::Mixer::FLAG_UNSIGNED;
+ track->flags |= kFlagUnsigned;
} else
error("IMuseDigital::saveOrLoad(): Can't handle %d bit samples", bits);
#ifdef SCUMM_LITTLE_ENDIAN
if (track->compressed)
- track->mixerFlags |= Audio::Mixer::FLAG_LITTLE_ENDIAN;
+ track->flags |= kFlagLittleEndian;
#endif
track->stream2 = NULL;
- track->stream = Audio::makeAppendableAudioStream(freq, track->mixerFlags);
+ track->stream = Audio::makeAppendableAudioStream(freq, makeMixerFlags(track->flags));
const int pan = (track->pan != 64) ? 2 * track->pan - 127 : 0;
const int vol = track->vol / 1000;
diff --git a/engines/scumm/imuse_digi/dimuse.h b/engines/scumm/imuse_digi/dimuse.h
index f3e4e608fc..e2c2e6ecdf 100644
--- a/engines/scumm/imuse_digi/dimuse.h
+++ b/engines/scumm/imuse_digi/dimuse.h
@@ -44,6 +44,23 @@ struct imuseComiTable;
class Serializer;
class ScummEngine_v7;
+// These flag bits correspond exactly to the sound mixer flags of March 2007.
+// We don't want to use the mixer flags directly, because then our saved games
+// will break in interesting ways if the mixer flags are ever assigned new
+// values. Now they should keep working, as long as these flags don't change.
+
+enum {
+ kFlagUnsigned = 1 << 0,
+ kFlag16Bits = 1 << 1,
+ kFlagLittleEndian = 1 << 2,
+ kFlagStereo = 1 << 3,
+ kFlagReverseStereo = 1 << 4
+
+ // Not used by Digital iMUSE
+ // kFlagAutoFree = 1 << 5,
+ // kFlagLoop = 1 << 6
+};
+
class IMuseDigital : public MusicEngine {
private:
@@ -76,7 +93,7 @@ private:
int32 soundType;
int32 iteration;
int32 mod;
- int32 mixerFlags;
+ int32 flags;
ImuseDigiSndMgr::soundStruct *soundHandle;
Audio::SoundHandle handle;
@@ -104,6 +121,7 @@ private:
int32 _curMusicSeq;
int32 _curMusicCue;
+ int32 makeMixerFlags(int32 flags);
static void timer_handler(void *refConf);
void callback();
void switchToNextRegion(Track *track);
diff --git a/engines/scumm/imuse_digi/dimuse_track.cpp b/engines/scumm/imuse_digi/dimuse_track.cpp
index 6acb2a0318..bcc5623c66 100644
--- a/engines/scumm/imuse_digi/dimuse_track.cpp
+++ b/engines/scumm/imuse_digi/dimuse_track.cpp
@@ -103,7 +103,7 @@ void IMuseDigital::startSound(int soundId, const char *soundName, int soundType,
track->dataOffset = 0;
track->regionOffset = 0;
track->mod = 0;
- track->mixerFlags = 0;
+ track->flags = 0;
track->toBeRemoved = false;
track->readyToRemove = false;
track->soundType = soundType;
@@ -143,19 +143,19 @@ void IMuseDigital::startSound(int soundId, const char *soundName, int soundType,
track->iteration = freq * channels;
if (channels == 2)
- track->mixerFlags = Audio::Mixer::FLAG_STEREO | Audio::Mixer::FLAG_REVERSE_STEREO;
+ track->flags = kFlagStereo | kFlagReverseStereo;
if ((bits == 12) || (bits == 16)) {
- track->mixerFlags |= Audio::Mixer::FLAG_16BITS;
+ track->flags |= kFlag16Bits;
track->iteration *= 2;
} else if (bits == 8) {
- track->mixerFlags |= Audio::Mixer::FLAG_UNSIGNED;
+ track->flags |= kFlagUnsigned;
} else
error("IMuseDigital::startSound(): Can't handle %d bit samples", bits);
#ifdef SCUMM_LITTLE_ENDIAN
if (track->compressed)
- track->mixerFlags |= Audio::Mixer::FLAG_LITTLE_ENDIAN;
+ track->flags |= kFlagLittleEndian;
#endif
}
@@ -177,7 +177,7 @@ void IMuseDigital::startSound(int soundId, const char *soundName, int soundType,
// setup 1 second stream wrapped buffer
track->stream2 = NULL;
- track->stream = Audio::makeAppendableAudioStream(freq, track->mixerFlags);
+ track->stream = Audio::makeAppendableAudioStream(freq, makeMixerFlags(track->flags));
_mixer->playInputStream(type, &track->handle, track->stream, -1, vol, pan, false);
track->started = true;
}
@@ -328,7 +328,7 @@ IMuseDigital::Track *IMuseDigital::cloneToFadeOutTrack(Track *track, int fadeDel
fadeTrack->curRegion = track->curRegion;
fadeTrack->curHookId = track->curHookId;
fadeTrack->iteration = track->iteration;
- fadeTrack->mixerFlags = track->mixerFlags;
+ fadeTrack->flags = track->flags;
fadeTrack->mod = track->mod;
fadeTrack->toBeRemoved = track->toBeRemoved;
fadeTrack->readyToRemove = track->readyToRemove;
@@ -355,7 +355,7 @@ IMuseDigital::Track *IMuseDigital::cloneToFadeOutTrack(Track *track, int fadeDel
type = Audio::Mixer::kMusicSoundType;
// setup 1 second stream wrapped buffer
- fadeTrack->stream = Audio::makeAppendableAudioStream(_sound->getFreq(fadeTrack->soundHandle), fadeTrack->mixerFlags);
+ fadeTrack->stream = Audio::makeAppendableAudioStream(_sound->getFreq(fadeTrack->soundHandle), makeMixerFlags(fadeTrack->flags));
_mixer->playInputStream(type, &fadeTrack->handle, fadeTrack->stream, -1, fadeTrack->vol / 1000, fadeTrack->pan, false);
fadeTrack->started = true;
fadeTrack->used = true;
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-17 20:42:45 +0000