+/* SDL_AudioStream is a new audio conversion interface.
+ The benefits vs SDL_AudioCVT:
+ - it can handle resampling data in chunks without generating
+ artifacts, when it doesn't have the complete buffer available.
+ - it can handle incoming data in any variable size.
+ - You push data as you have it, and pull it when you need it
+ */
+/* this is opaque to the outside world. */
+struct _SDL_AudioStream;
+typedef struct _SDL_AudioStream SDL_AudioStream;
+
+/**
+ * Create a new audio stream
+ *
+ * \param src_format The format of the source audio
+ * \param src_channels The number of channels of the source audio
+ * \param src_rate The sampling rate of the source audio
+ * \param dst_format The format of the desired audio output
+ * \param dst_channels The number of channels of the desired audio output
+ * \param dst_rate The sampling rate of the desired audio output
+ * \return 0 on success, or -1 on error.
+ *
+ * \sa SDL_AudioStreamPut
+ * \sa SDL_AudioStreamGet
+ * \sa SDL_AudioStreamAvailable
+ * \sa SDL_AudioStreamFlush
+ * \sa SDL_AudioStreamClear
+ * \sa SDL_FreeAudioStream
+ */
+extern DECLSPEC SDL_AudioStream * SDLCALL SDL_NewAudioStream(const SDL_AudioFormat src_format,
+ const Uint8 src_channels,
+ const int src_rate,
+ const SDL_AudioFormat dst_format,
+ const Uint8 dst_channels,
+ const int dst_rate);
+
+/**
+ * Add data to be converted/resampled to the stream
+ *
+ * \param stream The stream the audio data is being added to
+ * \param buf A pointer to the audio data to add
+ * \param len The number of bytes to write to the stream
+ * \return 0 on success, or -1 on error.
+ *
+ * \sa SDL_NewAudioStream
+ * \sa SDL_AudioStreamGet
+ * \sa SDL_AudioStreamAvailable
+ * \sa SDL_AudioStreamFlush
+ * \sa SDL_AudioStreamClear
+ * \sa SDL_FreeAudioStream
+ */
+extern DECLSPEC int SDLCALL SDL_AudioStreamPut(SDL_AudioStream *stream, const void *buf, int len);
+
+/**
+ * Get converted/resampled data from the stream
+ *
+ * \param stream The stream the audio is being requested from
+ * \param buf A buffer to fill with audio data
+ * \param len The maximum number of bytes to fill
+ * \return The number of bytes read from the stream, or -1 on error
+ *
+ * \sa SDL_NewAudioStream
+ * \sa SDL_AudioStreamPut
+ * \sa SDL_AudioStreamAvailable
+ * \sa SDL_AudioStreamFlush
+ * \sa SDL_AudioStreamClear
+ * \sa SDL_FreeAudioStream
+ */
+extern DECLSPEC int SDLCALL SDL_AudioStreamGet(SDL_AudioStream *stream, void *buf, int len);
+
+/**
+ * Get the number of converted/resampled bytes available. The stream may be
+ * buffering data behind the scenes until it has enough to resample
+ * correctly, so this number might be lower than what you expect, or even
+ * be zero. Add more data or flush the stream if you need the data now.
+ *
+ * \sa SDL_NewAudioStream
+ * \sa SDL_AudioStreamPut
+ * \sa SDL_AudioStreamGet
+ * \sa SDL_AudioStreamFlush
+ * \sa SDL_AudioStreamClear
+ * \sa SDL_FreeAudioStream
+ */
+extern DECLSPEC int SDLCALL SDL_AudioStreamAvailable(SDL_AudioStream *stream);
+
+/**
+ * Tell the stream that you're done sending data, and anything being buffered
+ * should be converted/resampled and made available immediately.
+ *
+ * It is legal to add more data to a stream after flushing, but there will
+ * be audio gaps in the output. Generally this is intended to signal the
+ * end of input, so the complete output becomes available.
+ *
+ * \sa SDL_NewAudioStream
+ * \sa SDL_AudioStreamPut
+ * \sa SDL_AudioStreamGet
+ * \sa SDL_AudioStreamAvailable
+ * \sa SDL_AudioStreamClear
+ * \sa SDL_FreeAudioStream
+ */
+extern DECLSPEC int SDLCALL SDL_AudioStreamFlush(SDL_AudioStream *stream);
+
+/**
+ * Clear any pending data in the stream without converting it
+ *
+ * \sa SDL_NewAudioStream
+ * \sa SDL_AudioStreamPut
+ * \sa SDL_AudioStreamGet
+ * \sa SDL_AudioStreamAvailable
+ * \sa SDL_AudioStreamFlush
+ * \sa SDL_FreeAudioStream
+ */
+extern DECLSPEC void SDLCALL SDL_AudioStreamClear(SDL_AudioStream *stream);
+
+/**
+ * Free an audio stream
+ *
+ * \sa SDL_NewAudioStream
+ * \sa SDL_AudioStreamPut
+ * \sa SDL_AudioStreamGet
+ * \sa SDL_AudioStreamAvailable
+ * \sa SDL_AudioStreamFlush
+ * \sa SDL_AudioStreamClear
+ */
+extern DECLSPEC void SDLCALL SDL_FreeAudioStream(SDL_AudioStream *stream);
+