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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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "common/util.h"
#include "common/stream.h"
#include "sound/mixer.h"
#include "sound/wave.h"
#include "gob/sound/sounddesc.h"
namespace Gob {
SoundDesc::SoundDesc() {
_data = _dataPtr = 0;
_size = 0;
_type = SOUND_SND;
_source = SOUND_FILE;
_repCount = 0;
_frequency = 0;
_flag = 0;
_id = 0;
_mixerFlags = 0;
}
SoundDesc::~SoundDesc() {
free();
}
void SoundDesc::set(SoundType type, SoundSource src,
byte *data, uint32 dSize) {
free();
_type = type;
_source = src;
_data = _dataPtr = data;
_size = dSize;
}
bool SoundDesc::load(SoundType type, SoundSource src,
byte *data, uint32 dSize) {
free();
_source = src;
switch (type) {
case SOUND_ADL:
return loadADL(data, dSize);
case SOUND_SND:
return loadSND(data, dSize);
case SOUND_WAV:
return loadWAV(data, dSize);
}
return false;
}
void SoundDesc::free() {
if (_source != SOUND_TOT)
delete[] _data;
_data = _dataPtr = 0;
_id = 0;
}
void SoundDesc::convToSigned() {
if ((_type != SOUND_SND) && (_type != SOUND_WAV))
return;
if (!_data || !_dataPtr)
return;
if (_mixerFlags & Audio::Mixer::FLAG_16BITS) {
uint16 *data = (uint16 *) _dataPtr;
for (uint32 i = 0; i < _size; i++)
data[i] ^= 0x8000;
} else
for (uint32 i = 0; i < _size; i++)
_dataPtr[i] ^= 0x80;
}
int16 SoundDesc::calcFadeOutLength(int16 frequency) {
return (10 * (_size / 2)) / frequency;
}
uint32 SoundDesc::calcLength(int16 repCount, int16 frequency, bool fade) {
uint32 fadeSize = fade ? _size / 2 : 0;
return ((_size * repCount - fadeSize) * 1000) / frequency;
}
bool SoundDesc::loadSND(byte *data, uint32 dSize) {
assert(dSize > 6);
_type = SOUND_SND;
_data = data;
_dataPtr = data + 6;
_frequency = MAX((int16) READ_BE_UINT16(data + 4), (int16) 4700);
_flag = data[0] ? (data[0] & 0x7F) : 8;
data[0] = 0;
_size = MIN(READ_BE_UINT32(data), dSize - 6);
return true;
}
bool SoundDesc::loadWAV(byte *data, uint32 dSize) {
Common::MemoryReadStream stream(data, dSize);
int wavSize, wavRate;
byte wavFlags;
uint16 wavtype;
if (!Audio::loadWAVFromStream(stream, wavSize, wavRate, wavFlags, &wavtype, 0))
return false;
if (wavFlags & Audio::Mixer::FLAG_16BITS) {
_mixerFlags |= Audio::Mixer::FLAG_16BITS;
wavSize >>= 1;
}
if (wavFlags & Audio::Mixer::FLAG_STEREO) {
warning("TODO: SoundDesc::loadWAV() - stereo");
return false;
}
_data = data;
_dataPtr = data + stream.pos();
_size = wavSize;
_frequency = wavRate;
if (wavFlags & Audio::Mixer::FLAG_UNSIGNED)
convToSigned();
return true;
}
bool SoundDesc::loadADL(byte *data, uint32 dSize) {
_type = SOUND_ADL;
_data = _dataPtr = data;
_size = dSize;
return true;
}
} // End of namespace Gob
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