Public Member Functions | |
| AACDecoder (Common::SeekableReadStream &stream) | |
| ~AACDecoder () | |
| int | getChannels () const |
| Return the number channels in this stream. More... | |
| int | getRate () const |
| Sample rate of the stream. More... | |
| bool | endOfData () const |
| End of data reached? If this returns true, it means that at this time there is no data available in the stream. More... | |
| bool | endOfStream () const |
| End of stream reached? If this returns true, it means that all data in this stream is used up and no additional data will appear in it in the future. More... | |
| size_t | readBuffer (int16 *buffer, const size_t numSamples) |
| Fill the given buffer with up to numSamples samples. More... | |
| void | finish () |
| Mark this stream as finished. More... | |
| bool | isFinished () const |
| Is the stream marked as finished? More... | |
| void | queuePacket (Common::SeekableReadStream *data) |
| Queue the next packet to be decoded. More... | |
 Public Member Functions inherited from Sound::PacketizedAudioStream | |
| virtual | ~PacketizedAudioStream () |
| Public Member Functions inherited from Sound::AudioStream | |
| virtual | ~AudioStream () |
Private Member Functions | |
| AudioStream * | decodeFrame (Common::SeekableReadStream &stream) |
Private Attributes | |
| NeAACDecHandle | _handle |
| byte | _channels |
| unsigned long | _rate |
| Common::ScopedPtr< QueuingAudioStream > | _audStream |
Additional Inherited Members | |
| Static Public Attributes inherited from Sound::AudioStream | |
| static const size_t | kSizeInvalid = SIZE_MAX |
Detailed Description
Constructor & Destructor Documentation
◆ AACDecoder()
| Sound::AACDecoder::AACDecoder | ( | Common::SeekableReadStream & | stream | ) |
Definition at line 71 of file aac.cpp.
References _audStream, _channels, _handle, _rate, Sound::makeQueuingAudioStream(), Common::ReadStream::read(), Common::SeekableReadStream::seek(), and Common::SeekableReadStream::size().
◆ ~AACDecoder()
Member Function Documentation
◆ decodeFrame()
|
private |
Definition at line 102 of file aac.cpp.
References _channels, _handle, _rate, Sound::QueuingAudioStream::finish(), Sound::FLAG_16BITS, Sound::FLAG_NATIVE_ENDIAN, Common::kReadError, Sound::makePCMStream(), Sound::makeQueuingAudioStream(), Sound::QueuingAudioStream::queueAudioStream(), Common::ReadStream::read(), and Common::SeekableReadStream::size().
Referenced by queuePacket().
◆ endOfData()
|
inlinevirtual |
End of data reached? If this returns true, it means that at this time there is no data available in the stream.
However there may be more data in the future. This is used by e.g. a rate converter to decide whether to keep on converting data or stop.
Implements Sound::AudioStream.
Definition at line 51 of file aac.cpp.
References _audStream.
◆ endOfStream()
|
inlinevirtual |
End of stream reached? If this returns true, it means that all data in this stream is used up and no additional data will appear in it in the future.
This is used by the mixer to decide whether a given stream shall be removed from the list of active streams (and thus be destroyed). By default this maps to endOfData()
Reimplemented from Sound::AudioStream.
Definition at line 52 of file aac.cpp.
References _audStream.
◆ finish()
|
inlinevirtual |
Mark this stream as finished.
That is, signal that no further data will be queued to it. Only after this has been done can this stream ever 'end'.
Implements Sound::PacketizedAudioStream.
Definition at line 56 of file aac.cpp.
References _audStream.
◆ getChannels()
|
inlinevirtual |
Return the number channels in this stream.
Implements Sound::AudioStream.
Definition at line 49 of file aac.cpp.
References _channels.
◆ getRate()
|
inlinevirtual |
Sample rate of the stream.
Implements Sound::AudioStream.
Definition at line 50 of file aac.cpp.
References _rate.
◆ isFinished()
|
inlinevirtual |
Is the stream marked as finished?
Implements Sound::PacketizedAudioStream.
Definition at line 57 of file aac.cpp.
References _audStream.
◆ queuePacket()
|
virtual |
Queue the next packet to be decoded.
Implements Sound::PacketizedAudioStream.
Definition at line 135 of file aac.cpp.
References _audStream, and decodeFrame().
◆ readBuffer()
|
inlinevirtual |
Fill the given buffer with up to numSamples samples.
Returns the actual number of samples read, or kSizeInvalid if a critical error occurred (note: you must check if this value is less than what you requested, this can happen when the stream is fully used up).
Data has to be in native endianness, 16 bit per sample, signed. For stereo stream, buffer will be filled with interleaved left and right channel samples, starting with a left sample. Furthermore, the samples in the left and right are summed up. So if you request 4 samples from a stereo stream, you will get a total of two left channel and two right channel samples.
The same holds true for more channels. Channel configurations recognized:
- 5.1: front left, front right, front center, low frequency rear left, rear right
Implements Sound::AudioStream.
Definition at line 53 of file aac.cpp.
References _audStream.
Member Data Documentation
◆ _audStream
|
private |
Definition at line 66 of file aac.cpp.
Referenced by AACDecoder(), endOfData(), endOfStream(), finish(), isFinished(), queuePacket(), and readBuffer().
◆ _channels
|
private |
Definition at line 62 of file aac.cpp.
Referenced by AACDecoder(), decodeFrame(), and getChannels().
◆ _handle
|
private |
Definition at line 61 of file aac.cpp.
Referenced by AACDecoder(), decodeFrame(), and ~AACDecoder().
◆ _rate
|
private |
Definition at line 63 of file aac.cpp.
Referenced by AACDecoder(), decodeFrame(), and getRate().
The documentation for this class was generated from the following file:
- src/sound/decoders/aac.cpp
