Common::SeekableReadStream *WwRIFFVorbisStream::createPacket() {
if (_currentOffset >= (_dataOffset + _dataSize))
return 0;
Common::MemoryWriteStreamDynamic header(true);
Common::BitStreamWriter8LSB bits(header);
Packet audioPacket(*_inStream, _currentOffset, _noGranule);
const size_t packerHeaderSize = audioPacket.headerSize();
const size_t size = audioPacket.size();
const size_t packetPayloadOffset = audioPacket.offset();
const size_t nextOffset = audioPacket.nextOffset();
if (_currentOffset + packerHeaderSize > _dataOffset + _dataSize)
throw Common::Exception("WwRIFFVorbisStream::createPacket(): "
"Page header truncated");
_currentOffset = packetPayloadOffset;
_inStream->seek(_currentOffset);
Common::ScopedPtr<Common::SeekableReadStream> packetStream(_inStream->readStream(size));
_currentOffset = nextOffset;
if (_currentOffset > (_dataOffset + _dataSize))
throw Common::Exception("WwRIFFVorbisStream::createPacket(): "
"Page truncated");
return packetStream.release();
}
const Graphics::Surface *BinkDecoder::decodeNextFrame() {
if (endOfVideo())
return 0;
VideoFrame &frame = _frames[_curFrame + 1];
if (!_bink->seek(frame.offset))
error("Bad bink seek");
uint32 frameSize = frame.size;
for (uint32 i = 0; i < _audioTracks.size(); i++) {
AudioTrack &audio = _audioTracks[i];
uint32 audioPacketLength = _bink->readUint32LE();
frameSize -= 4;
if (frameSize < audioPacketLength)
error("Audio packet too big for the frame");
if (audioPacketLength >= 4) {
uint32 audioPacketStart = _bink->pos();
uint32 audioPacketEnd = _bink->pos() + audioPacketLength;
if (i == _audioTrack) {
// Only play one audio track
// Number of samples in bytes
audio.sampleCount = _bink->readUint32LE() / (2 * audio.channels);
audio.bits =
new Common::BitStream32LELSB(new Common::SeekableSubReadStream(_bink,
audioPacketStart + 4, audioPacketEnd), true);
audioPacket(audio);
delete audio.bits;
audio.bits = 0;
}
_bink->seek(audioPacketEnd);
frameSize -= audioPacketLength;
}
}
uint32 videoPacketStart = _bink->pos();
uint32 videoPacketEnd = _bink->pos() + frameSize;
frame.bits =
new Common::BitStream32LELSB(new Common::SeekableSubReadStream(_bink,
videoPacketStart, videoPacketEnd), true);
videoPacket(frame);
delete frame.bits;
frame.bits = 0;
_curFrame++;
if (_curFrame == 0)
_startTime = g_system->getMillis();
return &_surface;
}
void Bink::processData() {
if (getTimeToNextFrame() > 0)
return;
if (_curFrame >= _frames.size()) {
finish();
return;
}
VideoFrame &frame = _frames[_curFrame];
if (!_bink->seek(frame.offset))
throw Common::Exception(Common::kSeekError);
uint32 frameSize = frame.size;
for (uint32 i = 0; i < _audioTracks.size(); i++) {
AudioTrack &audio = _audioTracks[i];
uint32 audioPacketLength = _bink->readUint32LE();
frameSize -= 4;
if (frameSize < audioPacketLength)
throw Common::Exception("Audio packet too big for the frame");
if (audioPacketLength >= 4) {
uint32 audioPacketStart = _bink->pos();
uint32 audioPacketEnd = _bink->pos() + audioPacketLength;
if (i == _audioTrack) {
// Only play one audio track
// Number of samples in bytes
audio.sampleCount = _bink->readUint32LE() / (2 * audio.channels);
audio.bits =
new Common::BitStream32LELSB(new Common::SeekableSubReadStream(_bink,
audioPacketStart + 4, audioPacketEnd), true);
audioPacket(audio);
delete audio.bits;
audio.bits = 0;
}
_bink->seek(audioPacketEnd);
frameSize -= audioPacketLength;
}
}
uint32 videoPacketStart = _bink->pos();
uint32 videoPacketEnd = _bink->pos() + frameSize;
frame.bits =
new Common::BitStream32LELSB(new Common::SeekableSubReadStream(_bink,
videoPacketStart, videoPacketEnd), true);
videoPacket(frame);
delete frame.bits;
frame.bits = 0;
_needCopy = true;
_curFrame++;
}
const Graphics::Surface *BinkDecoder::decodeNextFrame() {
if (endOfVideo())
return 0;
VideoFrame &frame = _frames[_curFrame + 1];
if (!_bink->seek(frame.offset))
error("Bad bink seek");
uint32 frameSize = frame.size;
for (uint32 i = 0; i < _audioTracks.size(); i++) {
AudioTrack &audio = _audioTracks[i];
uint32 audioPacketLength = _bink->readUint32LE();
frameSize -= 4;
if (frameSize < audioPacketLength)
error("Audio packet too big for the frame");
if (audioPacketLength >= 4) {
if (i == _audioTrack) {
// Only play one audio track
// Number of samples in bytes
audio.sampleCount = _bink->readUint32LE() / (2 * audio.channels);
audio.bits = new Common::BitStream32LE(*_bink, (audioPacketLength - 4) * 8);
audioPacket(audio);
delete audio.bits;
audio.bits = 0;
} else
// Skip the rest
_bink->skip(audioPacketLength);
frameSize -= audioPacketLength;
}
}
frame.bits = new Common::BitStream32LE(*_bink, frameSize * 8);
videoPacket(frame);
delete frame.bits;
frame.bits = 0;
_curFrame++;
if (_curFrame == 0)
_startTime = g_system->getMillis();
if (!_audioStarted && _audioStream) {
_audioStarted = true;
g_system->getMixer()->playStream(Audio::Mixer::kPlainSoundType, &_audioHandle, _audioStream);
}
return &_surface;
}
