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Insert preliminary Zak256 sound looping support. It's not perfect, as some Zak256 sounds only loop a part of the sample - which our mixer API doesn't yet support.

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svn-id: r8741
This commit is contained in:
James Brown 2003-07-04 14:10:44 +00:00
parent 0ed8e1ef36
commit 093a31839b
2 changed files with 20 additions and 4 deletions
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17
scumm/sound.cpp
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@ -370,6 +370,8 @@ void Sound::playSound(int soundID) {
#endif
rate = 11000;
int type = *(ptr + 0x0D);
int loop_start = READ_LE_UINT32(ptr+0x26);
int loop_end = READ_LE_UINT32(ptr+0x2A);
// Check if it is a CD playback resource
if (type == 2) {
@ -399,8 +401,15 @@ void Sound::playSound(int soundID) {
sound[x] = bit;
}
// FIXME: Maybe something in the header signifies looping? Need to
// track it down and add a mixer flag or something.
if (loop_end > 0) {
flags |= SoundMixer::FLAG_LOOP;
if ((loop_end < size) || (loop_start > 0)) {
// FIXME: Implement partial loops
warning("Partial loops not implemented. Loop at 0x%X thru 0x%X", loop_start, loop_end);
}
}
_scumm->_mixer->playRaw(NULL, sound, size, 11000, flags, soundID);
return;
}
@ -724,7 +733,9 @@ void Sound::stopSound(int a) {
stopCD();
}
if (_scumm->_imuseDigital) {
if (_scumm->_gameId == GID_ZAK256) {
_scumm->_mixer->stopID(a);
} else if (_scumm->_imuseDigital) {
_scumm->_imuseDigital->stopSound(a);
} else if (_scumm->_imuse) {
_scumm->_imuse->stopSound(a);

5
sound/mixer.cpp
View File

@ -229,6 +229,11 @@ int SoundMixer::insertChannel(PlayingSoundHandle *handle, Channel *chan) {
}
int SoundMixer::playRaw(PlayingSoundHandle *handle, void *sound, uint32 size, uint rate, byte flags, int id) {
// Prevent duplicate sounds
for (int i = 0; i != NUM_CHANNELS; i++)
if (_channels[i] != NULL && _channels[i]->_id == id)
return -1;
return insertChannel(handle, new ChannelRaw(this, sound, size, rate, flags, id));
}