mirror of
https://github.com/libretro/scummvm.git
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168 lines
3.6 KiB
C++
168 lines
3.6 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "common/util.h"
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#include "common/stream.h"
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#include "sound/mixer.h"
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#include "sound/wave.h"
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#include "gob/sound/sounddesc.h"
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namespace Gob {
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SoundDesc::SoundDesc() {
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_data = _dataPtr = 0;
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_size = 0;
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_type = SOUND_SND;
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_source = SOUND_FILE;
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_repCount = 0;
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_frequency = 0;
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_flag = 0;
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_id = 0;
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_mixerFlags = 0;
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}
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SoundDesc::~SoundDesc() {
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free();
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}
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void SoundDesc::set(SoundType type, SoundSource src,
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byte *data, uint32 dSize) {
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free();
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_type = type;
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_source = src;
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_data = _dataPtr = data;
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_size = dSize;
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}
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bool SoundDesc::load(SoundType type, SoundSource src,
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byte *data, uint32 dSize) {
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free();
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_source = src;
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switch (type) {
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case SOUND_ADL:
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return loadADL(data, dSize);
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case SOUND_SND:
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return loadSND(data, dSize);
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case SOUND_WAV:
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return loadWAV(data, dSize);
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}
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return false;
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}
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void SoundDesc::free() {
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if (_source != SOUND_TOT)
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delete[] _data;
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_data = _dataPtr = 0;
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_id = 0;
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}
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void SoundDesc::convToSigned() {
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if ((_type != SOUND_SND) && (_type != SOUND_WAV))
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return;
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if (!_data || !_dataPtr)
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return;
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if (_mixerFlags & Audio::Mixer::FLAG_16BITS) {
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uint16 *data = (uint16 *) _dataPtr;
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for (uint32 i = 0; i < _size; i++)
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data[i] ^= 0x8000;
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} else
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for (uint32 i = 0; i < _size; i++)
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_dataPtr[i] ^= 0x80;
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}
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int16 SoundDesc::calcFadeOutLength(int16 frequency) {
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return (10 * (_size / 2)) / frequency;
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}
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uint32 SoundDesc::calcLength(int16 repCount, int16 frequency, bool fade) {
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uint32 fadeSize = fade ? _size / 2 : 0;
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return ((_size * repCount - fadeSize) * 1000) / frequency;
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}
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bool SoundDesc::loadSND(byte *data, uint32 dSize) {
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assert(dSize > 6);
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_type = SOUND_SND;
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_data = data;
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_dataPtr = data + 6;
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_frequency = MAX((int16) READ_BE_UINT16(data + 4), (int16) 4700);
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_flag = data[0] ? (data[0] & 0x7F) : 8;
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data[0] = 0;
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_size = MIN(READ_BE_UINT32(data), dSize - 6);
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return true;
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}
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bool SoundDesc::loadWAV(byte *data, uint32 dSize) {
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Common::MemoryReadStream stream(data, dSize);
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int wavSize, wavRate;
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byte wavFlags;
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uint16 wavtype;
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if (!Audio::loadWAVFromStream(stream, wavSize, wavRate, wavFlags, &wavtype, 0))
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return false;
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if (wavFlags & Audio::Mixer::FLAG_16BITS) {
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_mixerFlags |= Audio::Mixer::FLAG_16BITS;
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wavSize >>= 1;
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}
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if (wavFlags & Audio::Mixer::FLAG_STEREO) {
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warning("TODO: SoundDesc::loadWAV() - stereo");
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return false;
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}
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_data = data;
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_dataPtr = data + stream.pos();
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_size = wavSize;
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_frequency = wavRate;
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if (wavFlags & Audio::Mixer::FLAG_UNSIGNED)
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convToSigned();
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return true;
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}
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bool SoundDesc::loadADL(byte *data, uint32 dSize) {
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_type = SOUND_ADL;
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_data = _dataPtr = data;
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_size = dSize;
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return true;
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}
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} // End of namespace Gob
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