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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.
*
*/
#include "audio/decoders/raw.h"
#include "audio/decoders/wave.h"
#include "common/memstream.h"
#include "titanic/sound/wave_file.h"
#include "titanic/sound/sound_manager.h"
#include "titanic/support/simple_file.h"
namespace Titanic {
/**
* This creates a ScummVM audio stream around a CAudioBuffer buffer,
* allowing for streaming audio output for the music room music
*/
class AudioBufferStream : public Audio::SeekableAudioStream {
private:
CAudioBuffer *_audioBuffer;
public:
AudioBufferStream(CAudioBuffer *audioBuffer) : _audioBuffer(audioBuffer) {}
virtual int readBuffer(int16 *buffer, const int numSamples);
virtual bool isStereo() const { return false; }
virtual bool endOfData() const;
virtual int getRate() const { return 22050; }
virtual Audio::Timestamp getLength() const { return Audio::Timestamp(); }
virtual bool seek(const Audio::Timestamp &where) { return false; }
};
int AudioBufferStream::readBuffer(int16 *buffer, const int numSamples) {
int samplesToRead = MIN((const int)numSamples, (const int)(_audioBuffer->getBytesToRead() / sizeof(uint16)));
const int16 *src = _audioBuffer->getReadPtr();
Common::copy(src, src + samplesToRead, buffer);
_audioBuffer->advanceRead(samplesToRead * 2);
return samplesToRead;
}
bool AudioBufferStream::endOfData() const {
return _audioBuffer->_disabled;
}
/*------------------------------------------------------------------------*/
CWaveFile::CWaveFile() : _soundManager(nullptr), _audioStream(nullptr),
_waveData(nullptr), _waveSize(0), _dataSize(0), _headerSize(0),
_rate(0), _flags(0), _wavType(0), _soundType(Audio::Mixer::kPlainSoundType) {
setup();
}
CWaveFile::CWaveFile(QSoundManager *owner) : _soundManager(owner), _audioStream(nullptr),
_waveData(nullptr), _waveSize(0), _dataSize(0), _headerSize(0),
_rate(0), _flags(0), _wavType(0), _soundType(Audio::Mixer::kPlainSoundType) {
setup();
}
void CWaveFile::setup() {
_loadMode = LOADMODE_SCUMMVM;
_dataSize = 0;
_audioBuffer = nullptr;
_disposeAudioBuffer = DisposeAfterUse::NO;
_channel = -1;
}
CWaveFile::~CWaveFile() {
if (_audioStream) {
//_soundManager->soundFreed(_soundHandle);
delete _audioStream;
}
if (_disposeAudioBuffer == DisposeAfterUse::YES && _audioBuffer)
delete _audioBuffer;
delete[] _waveData;
}
uint CWaveFile::getDurationTicks() const {
if (!_audioStream)
return 0;
// FIXME: The original uses acmStreamSize to calculate
// a desired size. Since I have no idea how the system API
// method works, for now I'm using a simple ratio of a
// sample output to input value
double newSize = (double)_dataSize * (1475712.0 / 199836.0);
return (uint)(newSize * 1000.0 / _audioStream->getRate());
}
bool CWaveFile::loadSound(const CString &name) {
assert(!_audioStream);
StdCWadFile file;
if (!file.open(name))
return false;
Common::SeekableReadStream *stream = file.readStream();
uint size = stream->size();
byte *data = new byte[size];
stream->read(data, size);
load(data, size);
_soundType = Audio::Mixer::kSFXSoundType;
return true;
}
bool CWaveFile::loadSpeech(CDialogueFile *dialogueFile, int speechIndex) {
DialogueResource *res = dialogueFile->openWaveEntry(speechIndex);
if (!res)
return false;
byte *data = (byte *)malloc(res->_size);
dialogueFile->read(res, data, res->_size);
load(data, res->_size);
_soundType = Audio::Mixer::kSpeechSoundType;
return true;
}
bool CWaveFile::loadMusic(const CString &name) {
assert(!_audioStream);
StdCWadFile file;
if (!file.open(name))
return false;
Common::SeekableReadStream *stream = file.readStream();
uint size = stream->size();
byte *data = new byte[size];
stream->read(data, size);
delete stream;
load(data, size);
_soundType = Audio::Mixer::kMusicSoundType;
return true;
}
bool CWaveFile::loadMusic(CAudioBuffer *buffer, DisposeAfterUse::Flag disposeAfterUse) {
_audioBuffer = buffer;
_disposeAudioBuffer = disposeAfterUse;
_loadMode = LOADMODE_AUDIO_BUFFER;
_audioStream = new AudioBufferStream(_audioBuffer);
return true;
}
void CWaveFile::load(byte *data, uint size) {
_waveData = data;
_waveSize = size;
// Parse the wave header
Common::MemoryReadStream wavStream(data, size, DisposeAfterUse::NO);
Audio::loadWAVFromStream(wavStream, _dataSize, _rate, _flags, &_wavType);
_headerSize = wavStream.pos();
}
Audio::SeekableAudioStream *CWaveFile::audioStream() {
if (!_audioStream) {
// No stream yet, so create one and give it control of the raw wave data
assert(_waveData);
_audioStream = Audio::makeWAVStream(
new Common::MemoryReadStream(_waveData, _waveSize, DisposeAfterUse::YES),
DisposeAfterUse::YES);
_waveData = nullptr;
}
return _audioStream;
}
uint CWaveFile::getFrequency() {
return audioStream()->getRate();
}
void CWaveFile::reset() {
audioStream()->rewind();
}
const int16 *CWaveFile::lock() {
enum { kWaveFormatPCM = 1 };
switch (_loadMode) {
case LOADMODE_SCUMMVM:
// Sanity checking that only raw 16-bit LE 22Khz waves can be locked
assert(_waveData && _rate == 22050);
assert(_flags == (Audio::FLAG_LITTLE_ENDIAN | Audio::FLAG_16BITS));
assert(_wavType == kWaveFormatPCM);
// Return a pointer to the data section of the wave file
return (const int16 *)(_waveData + _headerSize);
default:
return nullptr;
}
}
void CWaveFile::unlock(const int16 *ptr) {
// No implementation needed in ScummVM
}
} // End of namespace Titanic z
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