GstAudioEncoderClass

GstReserved void*[17] GstReserved;
close bool function(GstAudioEncoder* enc) close;: Optional. Called when the element changes to GST_STATE_NULL. Allows closing external resources.
decideAllocation bool function(GstAudioEncoder* enc, GstQuery* query) decideAllocation;: Optional. Setup the allocation parameters for allocating output buffers. The passed in query contains the result of the downstream allocation query. Subclasses should chain up to the parent implementation to invoke the default handler.
elementClass GstElementClass elementClass;: The parent class structure
flush void function(GstAudioEncoder* enc) flush;: Optional. Instructs subclass to clear any codec caches and discard any pending samples and not yet returned encoded data.
getcaps GstCaps* function(GstAudioEncoder* enc, GstCaps* filter) getcaps;: Optional. Allows for a custom sink getcaps implementation (e.g. for multichannel input specification). If not implemented, default returns gst_audio_encoder_proxy_getcaps applied to sink template caps.
handleFrame GstFlowReturn function(GstAudioEncoder* enc, GstBuffer* buffer) handleFrame;: Provides input samples (or NULL to clear any remaining data) according to directions as configured by the subclass using the API. Input data ref management is performed by base class, subclass should not care or intervene, and input data is only valid until next call to base class, most notably a call to gstaudio.audio_encoder.AudioEncoder.finishFrame.
negotiate bool function(GstAudioEncoder* enc) negotiate;: Optional. Negotiate with downstream and configure buffer pools, etc. Subclasses should chain up to the parent implementation to invoke the default handler.
open bool function(GstAudioEncoder* enc) open;: Optional. Called when the element changes to GST_STATE_READY. Allows opening external resources.
prePush
GstFlowReturn function(GstAudioEncoder* enc, GstBuffer** buffer) prePush;: Optional. Called just prior to pushing (encoded data) buffer downstream. Subclass has full discretionary access to buffer, and a not OK flow return will abort downstream pushing.
proposeAllocation bool function(GstAudioEncoder* enc, GstQuery* query) proposeAllocation;: Optional. Propose buffer allocation parameters for upstream elements. Subclasses should chain up to the parent implementation to invoke the default handler.
setFormat bool function(GstAudioEncoder* enc, GstAudioInfo* info) setFormat;: Notifies subclass of incoming data format. GstAudioInfo contains the format according to provided caps.
sinkEvent bool function(GstAudioEncoder* enc, GstEvent* event) sinkEvent;: Optional. Event handler on the sink pad. Subclasses should chain up to the parent implementation to invoke the default handler.
sinkQuery bool function(GstAudioEncoder* encoder, GstQuery* query) sinkQuery;: Optional. Query handler on the sink pad. This function should return TRUE if the query could be performed. Subclasses should chain up to the parent implementation to invoke the default handler. Since: 1.6
srcEvent bool function(GstAudioEncoder* enc, GstEvent* event) srcEvent;: Optional. Event handler on the src pad. Subclasses should chain up to the parent implementation to invoke the default handler.
srcQuery bool function(GstAudioEncoder* encoder, GstQuery* query) srcQuery;: Optional. Query handler on the source pad. This function should return TRUE if the query could be performed. Subclasses should chain up to the parent implementation to invoke the default handler. Since: 1.6
start bool function(GstAudioEncoder* enc) start;: Optional. Called when the element starts processing. Allows opening external resources.
stop bool function(GstAudioEncoder* enc) stop;: Optional. Called when the element stops processing. Allows closing external resources.
transformMeta bool function(GstAudioEncoder* enc, GstBuffer* outbuf, GstMeta* meta, GstBuffer* inbuf) transformMeta;: Optional. Transform the metadata on the input buffer to the output buffer. By default this method copies all meta without tags and meta with only the "audio" tag. subclasses can implement this method and return true if the metadata is to be copied. Since: 1.6

gstaudio c types enums

structs