Used for reading PCM .wav files. Supported formats are linear PCM, IEEE float, A-law and mu-law.
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| __init__ (WavAudio src, Istream stream) |
| Reads the .wav header from the indicated stream. This leaves the read pointer positioned at the start of the data. More...
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Public Member Functions inherited from MovieAudioCursor |
| __init__ (MovieAudio src) |
| This constructor returns a null audio stream — a stream of total silence, at 8000 samples per second. To get more interesting audio, you need to construct a subclass of this class. More...
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bool | aborted () |
| If aborted is true, it means that the "ready" samples are not being replenished. See the method "ready" for an explanation. More...
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int | audioChannels () |
| Returns the number of audio channels (ie, two for stereo, one for mono). More...
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int | audioRate () |
| Returns the audio sample rate. More...
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bool | canSeek () |
| Returns true if the movie can seek. If this is true, seeking is still not guaranteed to be fast: for some movies, seeking is implemented by rewinding to the beginning and then fast-forwarding to the desired location. Even if the movie cannot seek, the seek method can still advance to an arbitrary location by reading samples and discarding them. However, to move backward, can_seek must return true. More...
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bool | canSeekFast () |
| Returns true if seek operations are constant time. More...
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MovieAudio | getSource () |
| Returns the MovieAudio which this cursor references. More...
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double | length () |
| Returns the length of the movie. Attempting to read audio samples beyond the specified length will produce silent samples. More...
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str | readSamples (int n) |
| Read audio samples from the stream and returns them as a string. The samples are stored little-endian in the string. N is the number of samples you wish to read. Multiple-channel audio will be interleaved. More...
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| readSamples (int n, Datagram dg) |
| Read audio samples from the stream into a Datagram. N is the number of samples you wish to read. Multiple-channel audio will be interleaved. More...
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int | ready () |
| Returns the number of audio samples that are ready to read. This is primarily relevant for sources like microphones which produce samples at a fixed rate. If you try to read more samples than are ready, the result will be silent samples. More...
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| seek (double offset) |
| Skips to the specified offset within the file. More...
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| skipSamples (int n) |
| Skip audio samples from the stream. This is mostly for debugging purposes. More...
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double | tell () |
| Returns the current offset within the file. More...
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Public Member Functions inherited from TypedWritable |
object | __reduce__ () |
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object | __reduce_persist__ (object pickler) |
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str | encodeToBamStream () |
| Converts the TypedWritable object into a single stream of data using a BamWriter, and returns that data as a string string. Returns empty string on failure. More...
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bool | encodeToBamStream (String data, BamWriter writer) |
| Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string. Returns true on success, false on failure. More...
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UpdateSeq | getBamModified () |
| Returns the current bam_modified counter. This counter is normally incremented automatically whenever the object is modified. More...
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| markBamModified () |
| Increments the bam_modified counter, so that this object will be invalidated and retransmitted on any open bam streams. This should normally not need to be called by user code; it should be called internally when the object has been changed in a way that legitimately requires its retransmission to any connected clients. More...
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Public Member Functions inherited from TypedObject |
TypeHandle | getType () |
| Derived classes should override this function to return get_class_type(). More...
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int | getTypeIndex () |
| Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. This is equivalent to get_type().get_index(). More...
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bool | isExactType (TypeHandle handle) |
| Returns true if the current object is the indicated type exactly. More...
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bool | isOfType (TypeHandle handle) |
| Returns true if the current object is or derives from the indicated type. More...
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Public Member Functions inherited from ReferenceCount |
int | getRefCount () |
| Returns the current reference count. More...
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| ref () |
| Explicitly increments the reference count. User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically. More...
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bool | testRefCountIntegrity () |
| Does some easy checks to make sure that the reference count isn't completely bogus. Returns true if ok, false otherwise. More...
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bool | testRefCountNonzero () |
| Does some easy checks to make sure that the reference count isn't zero, or completely bogus. Returns true if ok, false otherwise. More...
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bool | unref () |
| Explicitly decrements the reference count. Note that the object will not be implicitly deleted by unref() simply because the reference count drops to zero. (Having a member function delete itself is problematic.) However, see the helper function unref_delete(). More...
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Used for reading PCM .wav files. Supported formats are linear PCM, IEEE float, A-law and mu-law.