Called after each new input buffer is submitted repeatedly
until it either generates an error or fails to generate an output
buffer. The default implementation takes the contents of the
@queued_buf variable, generates an output buffer if needed
by calling the class @prepare_output_buffer, and then
calls either @transform or @transform_ip. Elements that don't
do 1-to-1 transformations of input to output buffers can either
return GST_BASE_TRANSFORM_FLOW_DROPPED or simply not generate
an output buffer until they are ready to do so. (Since: 1.6)
Called after each new input buffer is submitted repeatedly until it either generates an error or fails to generate an output buffer. The default implementation takes the contents of the @queued_buf variable, generates an output buffer if needed by calling the class @prepare_output_buffer, and then calls either @transform or @transform_ip. Elements that don't do 1-to-1 transformations of input to output buffers can either return GST_BASE_TRANSFORM_FLOW_DROPPED or simply not generate an output buffer until they are ready to do so. (Since: 1.6)