mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-04 08:17:40 +00:00
290 lines
8.4 KiB
C++
290 lines
8.4 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2003-2004 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*
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*/
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#include "stdafx.h"
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#include "sound.h"
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#include "common/util.h"
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#include "resman.h"
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#include "logic.h"
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#include "sword1.h"
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namespace Sword1 {
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#define SOUND_SPEECH_ID 1
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#define SPEECH_FLAGS (SoundMixer::FLAG_16BITS | SoundMixer::FLAG_AUTOFREE | SoundMixer::FLAG_LITTLE_ENDIAN)
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Sound::Sound(const char *searchPath, SoundMixer *mixer, ResMan *pResMan, bool isDemo) {
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strcpy(_filePath, searchPath);
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_mixer = mixer;
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_resMan = pResMan;
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_cowHeader = NULL;
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_endOfQueue = 0;
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_currentCowFile = 0;
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_speechVolL = _speechVolR = _sfxVolL = _sfxVolR = 192;
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_isDemo = isDemo;
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}
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int Sound::addToQueue(int32 fxNo) {
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bool alreadyInQueue = false;
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for (uint8 cnt = 0; (cnt < _endOfQueue) && (!alreadyInQueue); cnt++)
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if (_fxQueue[cnt].id == (uint32)fxNo)
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alreadyInQueue = true;
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if (!alreadyInQueue) {
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if (_endOfQueue == MAX_FXQ_LENGTH) {
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warning("Sound queue overflow");
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return 0;
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}
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_resMan->resOpen(_fxList[fxNo].sampleId);
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_fxQueue[_endOfQueue].id = fxNo;
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if (_fxList[fxNo].type == FX_SPOT)
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_fxQueue[_endOfQueue].delay = _fxList[fxNo].delay + 1;
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else
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_fxQueue[_endOfQueue].delay = 1;
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_endOfQueue++;
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return 1;
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}
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return 0;
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}
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void Sound::engine(void) {
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// first of all, add any random sfx to the queue...
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for (uint16 cnt = 0; cnt < TOTAL_FX_PER_ROOM; cnt++) {
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uint16 fxNo = _roomsFixedFx[Logic::_scriptVars[SCREEN]][cnt];
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if (fxNo) {
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if (_fxList[fxNo].type == FX_RANDOM) {
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if (_rnd.getRandomNumber(_fxList[fxNo].delay) == 0)
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addToQueue(fxNo);
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}
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} else
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break;
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}
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// now process the queue
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for (uint8 cnt2 = 0; cnt2 < _endOfQueue; cnt2++) {
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if (_fxQueue[cnt2].delay > 0) {
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_fxQueue[cnt2].delay--;
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if (_fxQueue[cnt2].delay == 0)
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playSample(&_fxQueue[cnt2]);
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} else {
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if (!_fxQueue[cnt2].handle.isActive()) { // sound finished
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_resMan->resClose(_fxList[_fxQueue[cnt2].id].sampleId);
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if (cnt2 != _endOfQueue-1)
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_fxQueue[cnt2] = _fxQueue[_endOfQueue - 1];
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_endOfQueue--;
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}
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}
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}
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}
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void Sound::fnStopFx(int32 fxNo) {
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_mixer->stopID(fxNo);
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for (uint8 cnt = 0; cnt < _endOfQueue; cnt++)
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if (_fxQueue[cnt].id == (uint32)fxNo) {
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if (!_fxQueue[cnt].delay) // sound was started
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_resMan->resClose(_fxList[_fxQueue[cnt].id].sampleId);
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if (cnt != _endOfQueue-1)
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_fxQueue[cnt] = _fxQueue[_endOfQueue-1];
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_endOfQueue--;
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return ;
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}
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debug(8, "fnStopFx: id not found in queue");
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}
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bool Sound::amISpeaking(void) {
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_waveVolPos++;
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return _waveVolume[_waveVolPos - 1];
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}
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bool Sound::speechFinished(void) {
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return !_speechHandle.isActive();
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}
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void Sound::newScreen(uint32 screen) {
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if (_currentCowFile != SwordEngine::_systemVars.currentCD) {
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if (_currentCowFile)
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closeCowSystem();
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initCowSystem();
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}
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}
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void Sound::quitScreen(void) {
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// stop all running SFX
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while (_endOfQueue)
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fnStopFx(_fxQueue[0].id);
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}
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void Sound::playSample(QueueElement *elem) {
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uint8 *sampleData = (uint8*)_resMan->fetchRes(_fxList[elem->id].sampleId);
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for (uint16 cnt = 0; cnt < MAX_ROOMS_PER_FX; cnt++) {
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if (_fxList[elem->id].roomVolList[cnt].roomNo) {
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if ((_fxList[elem->id].roomVolList[cnt].roomNo == (int)Logic::_scriptVars[SCREEN]) ||
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(_fxList[elem->id].roomVolList[cnt].roomNo == -1)) {
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uint8 volL = (_fxList[elem->id].roomVolList[cnt].leftVol * 10 * _sfxVolL) / 255;
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uint8 volR = (_fxList[elem->id].roomVolList[cnt].rightVol * 10 * _sfxVolR) / 255;
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int8 pan = (volR - volL) / 2;
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uint8 volume = (volR + volL) / 2;
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uint32 size = READ_LE_UINT32(sampleData + 0x28);
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uint8 flags;
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if (READ_LE_UINT16(sampleData + 0x22) == 16)
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flags = SoundMixer::FLAG_16BITS | SoundMixer::FLAG_LITTLE_ENDIAN;
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else
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flags = SoundMixer::FLAG_UNSIGNED;
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if (READ_LE_UINT16(sampleData + 0x16) == 2)
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flags |= SoundMixer::FLAG_STEREO;
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_mixer->playRaw(&elem->handle, sampleData + 0x2C, size, 11025, flags, elem->id, volume, pan);
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}
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} else
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break;
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}
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}
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bool Sound::startSpeech(uint16 roomNo, uint16 localNo) {
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if (_cowHeader == NULL) {
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warning("Sound::startSpeech: COW file isn't open!");
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return false;
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}
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uint32 locIndex = _cowHeader[roomNo] >> 2;
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uint32 sampleSize = _cowHeader[locIndex + (localNo * 2)];
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uint32 index = _cowHeader[locIndex + (localNo * 2) - 1];
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debug(6, "startSpeech(%d, %d): locIndex %d, sampleSize %d, index %d", roomNo, localNo, locIndex, sampleSize, index);
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if (sampleSize) {
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uint32 size;
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int16 *data = uncompressSpeech(index + _cowHeaderSize, sampleSize, &size);
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uint8 speechVol = (_speechVolR + _speechVolL) / 2;
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int8 speechPan = (_speechVolR - _speechVolL) / 2;
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if (data)
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_mixer->playRaw(&_speechHandle, data, size, 11025, SPEECH_FLAGS, SOUND_SPEECH_ID, speechVol, speechPan);
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return true;
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} else
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return false;
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}
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int16 *Sound::uncompressSpeech(uint32 index, uint32 cSize, uint32 *size) {
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uint8 *fBuf = (uint8*)malloc(cSize);
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_cowFile.seek(index);
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_cowFile.read(fBuf, cSize);
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uint32 headerPos = 0;
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while ((READ_BE_UINT32(fBuf + headerPos) != 'data') && (headerPos < 100))
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headerPos++;
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if (headerPos < 100) {
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int32 resSize;
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// Demo uses slightly different headers
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if (_isDemo) {
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resSize = READ_LE_UINT32(fBuf + headerPos + 6) >> 1;
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headerPos += 2;
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} else
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resSize = READ_LE_UINT32(fBuf + headerPos + 4) >> 1;
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int16 *srcData = (int16*)(fBuf + headerPos + 8);
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int16 *dstData = (int16*)malloc(resSize * 2);
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uint32 srcPos = 0;
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int16 *dstPos = dstData;
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cSize = (cSize - (headerPos + 8)) / 2;
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while (srcPos < cSize) {
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int16 length = (int16)READ_LE_UINT16(srcData + srcPos);
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srcPos++;
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if (length < 0) {
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length = -length;
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for (uint16 cnt = 0; cnt < (uint16)length; cnt++)
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*dstPos++ = srcData[srcPos];
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srcPos++;
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} else {
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memcpy(dstPos, srcData + srcPos, length * 2);
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dstPos += length;
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srcPos += length;
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}
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}
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free(fBuf);
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*size = resSize * 2;
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calcWaveVolume(dstData, resSize);
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return dstData;
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} else {
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free(fBuf);
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warning("Sound::uncompressSpeech(): DATA tag not found in wave header");
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*size = 0;
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return NULL;
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}
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}
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void Sound::calcWaveVolume(int16 *data, uint32 length) {
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int16 *blkPos = data + 918;
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uint32 cnt;
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for (cnt = 0; cnt < WAVE_VOL_TAB_LENGTH; cnt++)
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_waveVolume[cnt] = false;
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_waveVolPos = 0;
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for (uint32 blkCnt = 1; blkCnt < length / 918; blkCnt++) {
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if (blkCnt >= WAVE_VOL_TAB_LENGTH) {
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warning("Wave vol tab too small.");
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return;
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}
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int32 average = 0;
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for (cnt = 0; cnt < 918; cnt++)
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average += blkPos[cnt];
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average /= 918;
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uint32 diff = 0;
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for (cnt = 0; cnt < 918; cnt++) {
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int16 smpDiff = *blkPos - average;
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diff += (uint32)ABS(smpDiff);
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blkPos++;
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}
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if (diff > WAVE_VOL_THRESHOLD)
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_waveVolume[blkCnt - 1] = true;
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}
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}
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void Sound::stopSpeech(void) {
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_mixer->stopID(SOUND_SPEECH_ID);
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}
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void Sound::initCowSystem(void) {
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char cowName[25];
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/* look for speech1/2.clu in the data dir
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and speech/speech.clu (running from cd or using cd layout)
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*/
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sprintf(cowName, "SPEECH%d.CLU", SwordEngine::_systemVars.currentCD);
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_cowFile.open(cowName);
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if (!_cowFile.isOpen())
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_cowFile.open("speech.clu");
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if (!_cowFile.isOpen())
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_cowFile.open("cows.mad");
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if (_cowFile.isOpen()) {
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_cowHeaderSize = _cowFile.readUint32LE();
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_cowHeader = (uint32*)malloc(_cowHeaderSize);
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if (_cowHeaderSize & 3)
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error("Unexpected cow header size %d", _cowHeaderSize);
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for (uint32 cnt = 0; cnt < (_cowHeaderSize / 4) - 1; cnt++)
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_cowHeader[cnt] = _cowFile.readUint32LE();
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_currentCowFile = SwordEngine::_systemVars.currentCD;
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} else
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warning("Sound::initCowSystem: Can't open SPEECH%d.CLU", SwordEngine::_systemVars.currentCD);
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}
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void Sound::closeCowSystem(void) {
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if (_cowFile.isOpen())
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_cowFile.close();
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if (_cowHeader)
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free(_cowHeader);
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_cowHeader = NULL;
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_currentCowFile = 0;
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}
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} // End of namespace Sword1
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