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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "scumm/imuse_digi/dimuse_engine.h"
namespace Scumm {
int IMuseDigital::addTrackToList(IMuseDigiTrack **listPtr, IMuseDigiTrack *listPtr_Item) {
// [0] is ->prev, [1] is ->next
if (!listPtr_Item || listPtr_Item->prev || listPtr_Item->next) {
debug(5, "IMuseDigital::addTrackToList(): ERROR: arguments might be null");
return -5;
} else {
// Set item's next element to the list
listPtr_Item->next = *listPtr;
if (*listPtr) {
// If the list is empty, use this item as the list
(*listPtr)->prev = listPtr_Item;
}
// Set the previous element of the item as nullptr,
// effectively making the item the first element of the list
listPtr_Item->prev = nullptr;
// Update the list with the new data
*listPtr = listPtr_Item;
}
return 0;
}
int IMuseDigital::removeTrackFromList(IMuseDigiTrack **listPtr, IMuseDigiTrack *listPtr_Item) {
IMuseDigiTrack *currentTrack = *listPtr;
IMuseDigiTrack *nextTrack;
if (listPtr_Item && currentTrack) {
do {
if (currentTrack == listPtr_Item)
break;
currentTrack = currentTrack->next;
} while (currentTrack);
if (currentTrack) {
nextTrack = listPtr_Item->next;
if (nextTrack)
nextTrack->prev = listPtr_Item->prev;
if (listPtr_Item->prev) {
listPtr_Item->prev->next = listPtr_Item->next;
} else {
*listPtr = listPtr_Item->next;
}
listPtr_Item->prev = nullptr;
listPtr_Item->next = nullptr;
return 0;
} else {
debug(5, "IMuseDigital::removeTrackFromList(): ERROR: item not on list");
return -3;
}
} else {
debug(5, "IMuseDigital::removeTrackFromList(): ERROR: arguments might be null");
return -5;
}
}
int IMuseDigital::addStreamZoneToList(IMuseDigiStreamZone **listPtr, IMuseDigiStreamZone *listPtr_Item) {
if (!listPtr_Item || listPtr_Item->prev || listPtr_Item->next) {
debug(5, "IMuseDigital::addStreamZoneToList(): ERROR: arguments might be null");
return -5;
} else {
// Set item's next element to the list
listPtr_Item->next = *listPtr;
if (*listPtr) {
// If the list is empty, use this item as the list
(*listPtr)->prev = listPtr_Item;
}
// Set the previous element of the item as nullptr,
// effectively making the item the first element of the list
listPtr_Item->prev = nullptr;
// Update the list with the new data
*listPtr = listPtr_Item;
}
return 0;
}
int IMuseDigital::removeStreamZoneFromList(IMuseDigiStreamZone **listPtr, IMuseDigiStreamZone *listPtr_Item) {
IMuseDigiStreamZone *currentStrZone = *listPtr;
IMuseDigiStreamZone *nextStrZone;
if (listPtr_Item && currentStrZone) {
do {
if (currentStrZone == listPtr_Item)
break;
currentStrZone = currentStrZone->next;
} while (currentStrZone);
if (currentStrZone) {
nextStrZone = listPtr_Item->next;
if (nextStrZone)
nextStrZone->prev = listPtr_Item->prev;
if (listPtr_Item->prev) {
listPtr_Item->prev->next = listPtr_Item->next;
} else {
*listPtr = listPtr_Item->next;
}
listPtr_Item->prev = nullptr;
listPtr_Item->next = nullptr;
return 0;
} else {
debug(5, "IMuseDigital::removeStreamZoneFromList(): ERROR: item not on list");
return -3;
}
} else {
debug(5, "IMuseDigital::removeStreamZoneFromList(): ERROR: arguments might be null");
return -5;
}
}
int IMuseDigital::clampNumber(int value, int minValue, int maxValue) {
if (value < minValue)
return minValue;
if (value > maxValue)
return maxValue;
return value;
}
int IMuseDigital::clampTuning(int value, int minValue, int maxValue) {
if (minValue > value) {
value += (12 * ((minValue - value) + 11) / 12);
}
if (maxValue < value) {
value -= (12 * ((value - maxValue) + 11) / 12);
}
return value;
}
int IMuseDigital::checkHookId(int &trackHookId, int sampleHookId) {
if (sampleHookId) {
if (trackHookId == sampleHookId) {
trackHookId = 0;
return 0;
} else {
return -1;
}
} else if (trackHookId == 128) {
trackHookId = 0;
return -1;
} else {
return 0;
}
}
} // End of namespace Scumm
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