mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-23 02:11:38 +00:00
548 lines
13 KiB
C++
548 lines
13 KiB
C++
/* 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 "kyra/sound.h"
|
|
#include "kyra/resource.h"
|
|
#include "kyra/kyra_mr.h"
|
|
|
|
#include "audio/audiostream.h"
|
|
|
|
#include "audio/decoders/mp3.h"
|
|
#include "audio/decoders/vorbis.h"
|
|
#include "audio/decoders/flac.h"
|
|
|
|
namespace Kyra {
|
|
|
|
class KyraAudioStream : public Audio::SeekableAudioStream {
|
|
public:
|
|
KyraAudioStream(Audio::SeekableAudioStream *impl) : _impl(impl), _rate(impl->getRate()), _fadeSamples(0), _fadeCount(0), _fading(0), _endOfData(false) {}
|
|
~KyraAudioStream() { delete _impl; _impl = 0; }
|
|
|
|
int readBuffer(int16 *buffer, const int numSamples);
|
|
bool isStereo() const { return _impl->isStereo(); }
|
|
bool endOfData() const { return _impl->endOfData() | _endOfData; }
|
|
int getRate() const { return _rate; }
|
|
|
|
void setRate(int newRate) { _rate = newRate; }
|
|
void beginFadeOut(uint32 millis);
|
|
|
|
bool seek(const Audio::Timestamp &where) { return _impl->seek(where); }
|
|
Audio::Timestamp getLength() const { return _impl->getLength(); }
|
|
private:
|
|
Audio::SeekableAudioStream *_impl;
|
|
|
|
int _rate;
|
|
|
|
int32 _fadeSamples;
|
|
int32 _fadeCount;
|
|
int _fading;
|
|
|
|
bool _endOfData;
|
|
};
|
|
|
|
void KyraAudioStream::beginFadeOut(uint32 millis) {
|
|
_fadeSamples = (millis * getRate()) / 1000;
|
|
if (_fading == 0)
|
|
_fadeCount = _fadeSamples;
|
|
_fading = -1;
|
|
}
|
|
|
|
int KyraAudioStream::readBuffer(int16 *buffer, const int numSamples) {
|
|
int samplesRead = _impl->readBuffer(buffer, numSamples);
|
|
|
|
if (_fading) {
|
|
int samplesProcessed = 0;
|
|
for (; samplesProcessed < samplesRead; ++samplesProcessed) {
|
|
// To help avoid overflows for long fade times, we divide both
|
|
// _fadeSamples and _fadeCount when calculating the new sample.
|
|
|
|
int32 div = _fadeSamples / 256;
|
|
if (_fading) {
|
|
*buffer = (*buffer * (_fadeCount / 256)) / div;
|
|
++buffer;
|
|
|
|
_fadeCount += _fading;
|
|
|
|
if (_fadeCount < 0) {
|
|
_fadeCount = 0;
|
|
_endOfData = true;
|
|
} else if (_fadeCount > _fadeSamples) {
|
|
_fadeCount = _fadeSamples;
|
|
_fading = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (_endOfData) {
|
|
memset(buffer, 0, (samplesRead - samplesProcessed) * sizeof(int16));
|
|
samplesRead = samplesProcessed;
|
|
}
|
|
}
|
|
|
|
return samplesRead;
|
|
}
|
|
|
|
// Thanks to Torbjorn Andersson (eriktorbjorn) for his aud player on which
|
|
// this code is based on
|
|
|
|
// TODO: cleanup of whole AUDStream
|
|
|
|
class AUDStream : public Audio::SeekableAudioStream {
|
|
public:
|
|
AUDStream(Common::SeekableReadStream *stream);
|
|
~AUDStream();
|
|
|
|
int readBuffer(int16 *buffer, const int numSamples);
|
|
|
|
bool isStereo() const { return false; }
|
|
bool endOfData() const { return _endOfData; }
|
|
|
|
int getRate() const { return _rate; }
|
|
|
|
bool seek(const Audio::Timestamp &where);
|
|
Audio::Timestamp getLength() const { return _length; }
|
|
private:
|
|
Common::SeekableReadStream *_stream;
|
|
uint32 _streamStart;
|
|
bool _endOfData;
|
|
int _rate;
|
|
uint _processedSize;
|
|
uint _totalSize;
|
|
Audio::Timestamp _length;
|
|
|
|
int _bytesLeft;
|
|
|
|
byte *_outBuffer;
|
|
int _outBufferOffset;
|
|
uint _outBufferSize;
|
|
|
|
byte *_inBuffer;
|
|
uint _inBufferSize;
|
|
|
|
int readChunk(int16 *buffer, const int maxSamples);
|
|
|
|
static const int8 WSTable2Bit[];
|
|
static const int8 WSTable4Bit[];
|
|
};
|
|
|
|
const int8 AUDStream::WSTable2Bit[] = { -2, -1, 0, 1 };
|
|
const int8 AUDStream::WSTable4Bit[] = {
|
|
-9, -8, -6, -5, -4, -3, -2, -1,
|
|
0, 1, 2, 3, 4, 5, 6, 8
|
|
};
|
|
|
|
AUDStream::AUDStream(Common::SeekableReadStream *stream) : _stream(stream), _endOfData(true), _rate(0),
|
|
_processedSize(0), _totalSize(0), _length(0, 1), _bytesLeft(0), _outBuffer(0),
|
|
_outBufferOffset(0), _outBufferSize(0), _inBuffer(0), _inBufferSize(0) {
|
|
|
|
_rate = _stream->readUint16LE();
|
|
_totalSize = _stream->readUint32LE();
|
|
|
|
// TODO?: add checks
|
|
int flags = _stream->readByte(); // flags
|
|
int type = _stream->readByte(); // type
|
|
|
|
_streamStart = stream->pos();
|
|
|
|
debugC(5, kDebugLevelSound, "AUD Info: rate: %d, totalSize: %d, flags: %d, type: %d, streamStart: %d", _rate, _totalSize, flags, type, _streamStart);
|
|
|
|
_length = Audio::Timestamp(0, _rate);
|
|
for (uint32 i = 0; i < _totalSize;) {
|
|
uint16 size = _stream->readUint16LE();
|
|
uint16 outSize = _stream->readUint16LE();
|
|
|
|
_length = _length.addFrames(outSize);
|
|
stream->seek(size + 4, SEEK_CUR);
|
|
i += size + 8;
|
|
}
|
|
|
|
stream->seek(_streamStart, SEEK_SET);
|
|
|
|
if (type == 1 && !flags)
|
|
_endOfData = false;
|
|
else
|
|
warning("No AUD file (rate: %d, size: %d, flags: 0x%X, type: %d)", _rate, _totalSize, flags, type);
|
|
}
|
|
|
|
AUDStream::~AUDStream() {
|
|
delete[] _outBuffer;
|
|
delete[] _inBuffer;
|
|
delete _stream;
|
|
}
|
|
|
|
int AUDStream::readBuffer(int16 *buffer, const int numSamples) {
|
|
int samplesRead = 0, samplesLeft = numSamples;
|
|
|
|
while (samplesLeft > 0 && !_endOfData) {
|
|
int samples = readChunk(buffer, samplesLeft);
|
|
samplesRead += samples;
|
|
samplesLeft -= samples;
|
|
buffer += samples;
|
|
}
|
|
|
|
return samplesRead;
|
|
}
|
|
|
|
inline int16 clip8BitSample(int16 sample) {
|
|
if (sample > 255)
|
|
return 255;
|
|
if (sample < 0)
|
|
return 0;
|
|
return sample;
|
|
}
|
|
|
|
int AUDStream::readChunk(int16 *buffer, const int maxSamples) {
|
|
int samplesProcessed = 0;
|
|
|
|
// if no bytes of the old chunk are left, read the next one
|
|
if (_bytesLeft <= 0) {
|
|
if (_processedSize >= _totalSize) {
|
|
_endOfData = true;
|
|
return 0;
|
|
}
|
|
|
|
uint16 size = _stream->readUint16LE();
|
|
uint16 outSize = _stream->readUint16LE();
|
|
uint32 id = _stream->readUint32LE();
|
|
|
|
assert(id == 0x0000DEAF);
|
|
|
|
_processedSize += 8 + size;
|
|
|
|
_outBufferOffset = 0;
|
|
if (size == outSize) {
|
|
if (outSize > _outBufferSize) {
|
|
_outBufferSize = outSize;
|
|
delete[] _outBuffer;
|
|
_outBuffer = new uint8[_outBufferSize];
|
|
assert(_outBuffer);
|
|
}
|
|
|
|
_bytesLeft = size;
|
|
|
|
_stream->read(_outBuffer, _bytesLeft);
|
|
} else {
|
|
_bytesLeft = outSize;
|
|
|
|
if (outSize > _outBufferSize) {
|
|
_outBufferSize = outSize;
|
|
delete[] _outBuffer;
|
|
_outBuffer = new uint8[_outBufferSize];
|
|
assert(_outBuffer);
|
|
}
|
|
|
|
if (size > _inBufferSize) {
|
|
_inBufferSize = size;
|
|
delete[] _inBuffer;
|
|
_inBuffer = new uint8[_inBufferSize];
|
|
assert(_inBuffer);
|
|
}
|
|
|
|
if (_stream->read(_inBuffer, size) != size) {
|
|
_endOfData = true;
|
|
return 0;
|
|
}
|
|
|
|
int16 curSample = 0x80;
|
|
byte code = 0;
|
|
int8 count = 0;
|
|
uint16 input = 0;
|
|
int j = 0;
|
|
int i = 0;
|
|
|
|
while (outSize > 0) {
|
|
input = _inBuffer[i++] << 2;
|
|
code = (input >> 8) & 0xff;
|
|
count = (input & 0xff) >> 2;
|
|
|
|
switch (code) {
|
|
case 2:
|
|
if (count & 0x20) {
|
|
/* NOTE: count is signed! */
|
|
count <<= 3;
|
|
curSample += (count >> 3);
|
|
_outBuffer[j++] = curSample & 0xFF;
|
|
outSize--;
|
|
} else {
|
|
for (; count >= 0; count--) {
|
|
_outBuffer[j++] = _inBuffer[i++];
|
|
outSize--;
|
|
}
|
|
curSample = _inBuffer[i - 1];
|
|
}
|
|
break;
|
|
case 1:
|
|
for (; count >= 0; count--) {
|
|
code = _inBuffer[i++];
|
|
|
|
curSample += WSTable4Bit[code & 0x0f];
|
|
curSample = clip8BitSample(curSample);
|
|
_outBuffer[j++] = curSample;
|
|
|
|
curSample += WSTable4Bit[code >> 4];
|
|
curSample = clip8BitSample(curSample);
|
|
_outBuffer[j++] = curSample;
|
|
|
|
outSize -= 2;
|
|
}
|
|
break;
|
|
case 0:
|
|
for (; count >= 0; count--) {
|
|
code = (uint8)_inBuffer[i++];
|
|
|
|
curSample += WSTable2Bit[code & 0x03];
|
|
curSample = clip8BitSample(curSample);
|
|
_outBuffer[j++] = curSample & 0xFF;
|
|
|
|
curSample += WSTable2Bit[(code >> 2) & 0x03];
|
|
curSample = clip8BitSample(curSample);
|
|
_outBuffer[j++] = curSample & 0xFF;
|
|
|
|
curSample += WSTable2Bit[(code >> 4) & 0x03];
|
|
curSample = clip8BitSample(curSample);
|
|
_outBuffer[j++] = curSample & 0xFF;
|
|
|
|
curSample += WSTable2Bit[(code >> 6) & 0x03];
|
|
curSample = clip8BitSample(curSample);
|
|
_outBuffer[j++] = curSample & 0xFF;
|
|
|
|
outSize -= 4;
|
|
}
|
|
break;
|
|
default:
|
|
for (; count >= 0; count--) {
|
|
_outBuffer[j++] = curSample & 0xFF;
|
|
outSize--;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// copies the chunk data to the output buffer
|
|
if (_bytesLeft > 0) {
|
|
int samples = MIN(_bytesLeft, maxSamples);
|
|
samplesProcessed += samples;
|
|
_bytesLeft -= samples;
|
|
|
|
while (samples--) {
|
|
int16 sample = (_outBuffer[_outBufferOffset++] << 8) ^ 0x8000;
|
|
|
|
*buffer++ = sample;
|
|
}
|
|
}
|
|
|
|
return samplesProcessed;
|
|
}
|
|
|
|
bool AUDStream::seek(const Audio::Timestamp &where) {
|
|
const uint32 seekSample = Audio::convertTimeToStreamPos(where, getRate(), isStereo()).totalNumberOfFrames();
|
|
|
|
_stream->seek(_streamStart);
|
|
_processedSize = 0;
|
|
_bytesLeft = 0;
|
|
_endOfData = false;
|
|
|
|
uint32 curSample = 0;
|
|
|
|
while (!endOfData()) {
|
|
uint16 size = _stream->readUint16LE();
|
|
uint16 outSize = _stream->readUint16LE();
|
|
|
|
if (curSample + outSize > seekSample) {
|
|
_stream->seek(-4, SEEK_CUR);
|
|
|
|
uint32 samples = seekSample - curSample;
|
|
int16 *temp = new int16[samples];
|
|
assert(temp);
|
|
|
|
readChunk(temp, samples);
|
|
delete[] temp;
|
|
curSample += samples;
|
|
break;
|
|
} else {
|
|
curSample += outSize;
|
|
_processedSize += 8 + size;
|
|
_stream->seek(size + 4, SEEK_CUR);
|
|
}
|
|
}
|
|
|
|
_endOfData = (_processedSize >= _totalSize);
|
|
|
|
return (curSample == seekSample);
|
|
}
|
|
|
|
#pragma mark -
|
|
|
|
SoundDigital::SoundDigital(KyraEngine_MR *vm, Audio::Mixer *mixer) : _vm(vm), _mixer(mixer) {
|
|
for (uint i = 0; i < ARRAYSIZE(_sounds); ++i)
|
|
_sounds[i].stream = 0;
|
|
}
|
|
|
|
SoundDigital::~SoundDigital() {
|
|
for (int i = 0; i < ARRAYSIZE(_sounds); ++i)
|
|
stopSound(i);
|
|
}
|
|
|
|
int SoundDigital::playSound(const char *filename, uint8 priority, Audio::Mixer::SoundType type, int volume, bool loop, int channel) {
|
|
Sound *use = 0;
|
|
if (channel != -1 && channel < ARRAYSIZE(_sounds)) {
|
|
stopSound(channel);
|
|
use = &_sounds[channel];
|
|
} else {
|
|
for (channel = 0; !use && channel < ARRAYSIZE(_sounds); ++channel) {
|
|
if (!isPlaying(channel)) {
|
|
stopSound(channel);
|
|
use = &_sounds[channel];
|
|
break;
|
|
}
|
|
}
|
|
|
|
for (channel = 0; !use && channel < ARRAYSIZE(_sounds); ++channel) {
|
|
if (strcmp(_sounds[channel].filename, filename) == 0) {
|
|
stopSound(channel);
|
|
use = &_sounds[channel];
|
|
break;
|
|
}
|
|
}
|
|
|
|
for (channel = 0; !use && channel < ARRAYSIZE(_sounds); ++channel) {
|
|
if (_sounds[channel].priority <= priority) {
|
|
stopSound(channel);
|
|
use = &_sounds[channel];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!use) {
|
|
warning("no free sound channel");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
Common::SeekableReadStream *stream = 0;
|
|
int usedCodec = -1;
|
|
for (int i = 0; _supportedCodecs[i].fileext; ++i) {
|
|
Common::String file = filename;
|
|
file += _supportedCodecs[i].fileext;
|
|
|
|
if (!_vm->resource()->exists(file.c_str()))
|
|
continue;
|
|
|
|
stream = _vm->resource()->createReadStream(file);
|
|
usedCodec = i;
|
|
}
|
|
|
|
if (!stream) {
|
|
warning("Couldn't find soundfile '%s'", filename);
|
|
return -1;
|
|
}
|
|
|
|
Common::strlcpy(use->filename, filename, sizeof(use->filename));
|
|
use->priority = priority;
|
|
debugC(5, kDebugLevelSound, "playSound: \"%s\"", use->filename);
|
|
Audio::SeekableAudioStream *audioStream = _supportedCodecs[usedCodec].streamFunc(stream, DisposeAfterUse::YES);
|
|
if (!audioStream) {
|
|
warning("Couldn't create audio stream for file '%s'", filename);
|
|
return -1;
|
|
}
|
|
use->stream = new KyraAudioStream(audioStream);
|
|
assert(use->stream);
|
|
if (use->stream->endOfData()) {
|
|
delete use->stream;
|
|
use->stream = 0;
|
|
|
|
return -1;
|
|
}
|
|
|
|
if (volume > 255)
|
|
volume = 255;
|
|
volume = (volume * Audio::Mixer::kMaxChannelVolume) / 255;
|
|
|
|
if (type == Audio::Mixer::kSpeechSoundType && _vm->heliumMode())
|
|
use->stream->setRate(32765);
|
|
|
|
_mixer->playStream(type, &use->handle, makeLoopingAudioStream(use->stream, loop ? 0 : 1), -1, volume);
|
|
return use - _sounds;
|
|
}
|
|
|
|
bool SoundDigital::isPlaying(int channel) {
|
|
if (channel == -1)
|
|
return false;
|
|
|
|
assert(channel >= 0 && channel < ARRAYSIZE(_sounds));
|
|
|
|
if (!_sounds[channel].stream)
|
|
return false;
|
|
|
|
return _mixer->isSoundHandleActive(_sounds[channel].handle);
|
|
}
|
|
|
|
void SoundDigital::stopSound(int channel) {
|
|
if (channel == -1)
|
|
return;
|
|
|
|
assert(channel >= 0 && channel < ARRAYSIZE(_sounds));
|
|
_mixer->stopHandle(_sounds[channel].handle);
|
|
_sounds[channel].stream = 0;
|
|
}
|
|
|
|
void SoundDigital::stopAllSounds() {
|
|
for (int i = 0; i < ARRAYSIZE(_sounds); ++i) {
|
|
if (isPlaying(i))
|
|
stopSound(i);
|
|
}
|
|
}
|
|
|
|
void SoundDigital::beginFadeOut(int channel, int ticks) {
|
|
if (isPlaying(channel))
|
|
_sounds[channel].stream->beginFadeOut(ticks * _vm->tickLength());
|
|
}
|
|
|
|
// static res
|
|
|
|
namespace {
|
|
|
|
Audio::SeekableAudioStream *makeAUDStream(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeAfterUse) {
|
|
return new AUDStream(stream);
|
|
}
|
|
|
|
} // end of anonymous namespace
|
|
|
|
const SoundDigital::AudioCodecs SoundDigital::_supportedCodecs[] = {
|
|
#ifdef USE_FLAC
|
|
{ ".FLA", Audio::makeFLACStream },
|
|
#endif // USE_FLAC
|
|
#ifdef USE_VORBIS
|
|
{ ".OGG", Audio::makeVorbisStream },
|
|
#endif // USE_VORBIS
|
|
#ifdef USE_MAD
|
|
{ ".MP3", Audio::makeMP3Stream },
|
|
#endif // USE_MAD
|
|
{ ".AUD", makeAUDStream },
|
|
{ 0, 0 }
|
|
};
|
|
|
|
|
|
} // End of namespace Kyra
|
|
|