GstAudioRingBuffer

This object is the base class for audio ringbuffers used by the base audio source and sink classes.

The ringbuffer abstracts a circular buffer of data. One reader and one writer can operate on the data from different threads in a lockfree manner. The base class is sufficiently flexible to be used as an abstraction for DMA based ringbuffers as well as a pure software implementations.

Members

Variables

GstReserved void*[3] GstReserved;
acquired bool acquired;: boolean indicating that the ringbuffer is acquired
active bool active;
callback GstAudioRingBufferCallback callback;
cbData void* cbData;
cbDataNotify GDestroyNotify cbDataNotify;
channelReorderMap int[64] channelReorderMap;
cond GCond cond;: used to signal start/stop/pause/resume actions
emptySeg ubyte* emptySeg;: pointer to memory holding one segment of silence samples
flushing bool flushing;
mayStart int mayStart;
memory ubyte* memory;: data in the ringbuffer
needReorder bool needReorder;
object GstObject object;
open bool open;: boolean indicating that the ringbuffer is open
samplesPerSeg int samplesPerSeg;: number of samples in one segment
segbase int segbase;: segment corresponding to segment 0 (unused)
segdone int segdone;: readpointer in the ringbuffer
size size_t size;: size of data in the ringbuffer
spec GstAudioRingBufferSpec spec;: format and layout of the ringbuffer data
state int state;: state of the buffer
timestamps GstClockTime* timestamps;
waiting int waiting;: is a reader or writer waiting for a free segment