SubSeekableAudioStream::SubSeekableAudioStream(SeekableAudioStream *parent, const Common::Timestamp start, const Common::Timestamp end, DisposeAfterUse::Flag disposeAfterUse)
: _parent(parent, disposeAfterUse),
_start(convertTimeToStreamPos(start, getRate(), getChannels())),
_pos(0, getRate() * getChannels()),
_length(convertTimeToStreamPos(end, getRate(), getChannels()) - _start) {
assert(_length.totalNumberOfFrames() % getChannels() == 0);
_parent->seek(_start);
}
SubSeekableAudioStream::SubSeekableAudioStream(SeekableAudioStream *parent, const Timestamp start, const Timestamp end, DisposeAfterUse::Flag disposeAfterUse)
: _parent(parent), _disposeAfterUse(disposeAfterUse),
_start(convertTimeToStreamPos(start, getRate(), isStereo())),
_pos(0, getRate() * (isStereo() ? 2 : 1)),
_length(convertTimeToStreamPos(end - start, getRate(), isStereo())) {
assert(_length.totalNumberOfFrames() % (isStereo() ? 2 : 1) == 0);
_parent->seek(_start);
}
SubLoopingAudioStream::SubLoopingAudioStream(SeekableAudioStream *stream,
uint loops,
const Timestamp loopStart,
const Timestamp loopEnd,
DisposeAfterUse::Flag disposeAfterUse)
: _parent(stream), _disposeAfterUse(disposeAfterUse), _loops(loops),
_pos(0, getRate() * (isStereo() ? 2 : 1)),
_loopStart(convertTimeToStreamPos(loopStart, getRate(), isStereo())),
_loopEnd(convertTimeToStreamPos(loopEnd, getRate(), isStereo())),
_done(false) {
assert(loopStart < loopEnd);
if (!_parent->rewind())
_done = true;
}
EMISubLoopingAudioStream(Audio::SeekableAudioStream *stream, uint loops,
const Audio::Timestamp start,
const Audio::Timestamp loopStart,
const Audio::Timestamp loopEnd,
DisposeAfterUse::Flag disposeAfterUse = DisposeAfterUse::YES)
: _parent(stream, disposeAfterUse),
_pos(convertTimeToStreamPos(start, getRate(), isStereo())),
_loopStart(convertTimeToStreamPos(loopStart, getRate(), isStereo())),
_loopEnd(convertTimeToStreamPos(loopEnd, getRate(), isStereo())),
_done(false), _hasLooped(false) {
assert(loopStart < loopEnd);
if (!_parent->seek(_pos))
_done = true;
}
bool FLACStream::seek(const Timestamp &where) {
_sampleCache.bufFill = 0;
_sampleCache.bufReadPos = NULL;
// FLAC uses the sample pair number, thus we always use "false" for the isStereo parameter
// of the convertTimeToStreamPos helper.
return seekAbsolute((FLAC__uint64)convertTimeToStreamPos(where, getRate(), false).totalNumberOfFrames());
}
bool VorbisStream::seek(const Timestamp &where) {
// Vorbisfile uses the sample pair number, thus we always use "false" for the isStereo parameter
// of the convertTimeToStreamPos helper.
int res = ov_pcm_seek(&_ovFile, convertTimeToStreamPos(where, getRate(), false).totalNumberOfFrames());
if (res) {
warning("Error seeking in Vorbis stream (%d)", res);
_pos = _bufferEnd;
return false;
}
return refill();
}
bool SubSeekableAudioStream::seek(const Timestamp &where) {
_pos = convertTimeToStreamPos(where, getRate(), isStereo());
if (_pos > _length) {
_pos = _length;
return false;
}
if (_parent->seek(_pos + _start)) {
return true;
} else {
_pos = _length;
return false;
}
}
bool RawStream<is16Bit, isUnsigned, isLE>::seek(const Timestamp &where) {
_endOfData = true;
if (where > _playtime)
return false;
const uint32 seekSample = convertTimeToStreamPos(where, getRate(), isStereo()).totalNumberOfFrames();
_stream->seek(seekSample * (is16Bit ? 2 : 1), SEEK_SET);
// In case of an error we will not continue stream playback.
if (!_stream->err() && !_stream->eos() && _stream->pos() != _stream->size())
_endOfData = false;
return true;
}
