1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/* 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) {
return _audioBuffer->read(buffer, numSamples);
}
bool AudioBufferStream::endOfData() const {
return _audioBuffer->isFinished();
}
/*------------------------------------------------------------------------*/
CWaveFile::CWaveFile(Audio::Mixer *mixer) : _mixer(mixer), _pendingAudioStream(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() {
// Delete any pending audio stream if it wasn't used
delete _pendingAudioStream;
if (_disposeAudioBuffer == DisposeAfterUse::YES && _audioBuffer)
delete _audioBuffer;
free(_waveData);
}
uint CWaveFile::getDurationTicks() const {
if (!_rate)
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 / _rate);
}
bool CWaveFile::loadSound(const CString &name) {
StdCWadFile file;
if (!file.open(name))
return false;
Common::SeekableReadStream *stream = file.readStream();
uint wavSize = stream->size();
byte *data = (byte *)malloc(wavSize);
stream->read(data, wavSize);
load(data, wavSize);
_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) {
StdCWadFile file;
if (!file.open(name))
return false;
Common::SeekableReadStream *stream = file.readStream();
uint wavSize = stream->size();
byte *data = new byte[wavSize];
stream->read(data, wavSize);
delete stream;
load(data, wavSize);
_soundType = Audio::Mixer::kMusicSoundType;
return true;
}
bool CWaveFile::loadMusic(CAudioBuffer *buffer, DisposeAfterUse::Flag disposeAfterUse) {
_audioBuffer = buffer;
_disposeAudioBuffer = disposeAfterUse;
_loadMode = LOADMODE_AUDIO_BUFFER;
_pendingAudioStream = new AudioBufferStream(_audioBuffer);
return true;
}
void CWaveFile::load(byte *data, uint dataSize) {
_waveData = data;
_waveSize = dataSize;
// Parse the wave header
Common::MemoryReadStream wavStream(data, dataSize, DisposeAfterUse::NO);
if (!Audio::loadWAVFromStream(wavStream, _dataSize, _rate, _flags, &_wavType))
error("Invalid wave file");
_headerSize = wavStream.pos();
}
Audio::SeekableAudioStream *CWaveFile::createAudioStream() {
Audio::SeekableAudioStream *stream;
if (_pendingAudioStream) {
stream = _pendingAudioStream;
_pendingAudioStream = nullptr;
} else {
// Create a new ScummVM audio stream for the wave file data
stream = Audio::makeWAVStream(
new Common::MemoryReadStream(_waveData, _waveSize, DisposeAfterUse::NO),
DisposeAfterUse::YES);
}
_rate = stream->getRate();
return stream;
}
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 == AUDIO_SAMPLING_RATE);
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
}
Audio::SoundHandle CWaveFile::play(int numLoops, byte volume) {
Audio::SeekableAudioStream *audioStream = createAudioStream();
Audio::SoundHandle handle;
Audio::AudioStream *stream = audioStream;
if (numLoops != 0)
stream = new Audio::LoopingAudioStream(audioStream,
(numLoops == -1) ? 0 : numLoops);
_mixer->playStream(_soundType, &handle, stream, -1,
volume, 0, DisposeAfterUse::YES);
return handle;
}
} // End of namespace Titanic
|
