appsrc performance issue

[mksafavi]

Hi.

when I push my buffer to appsrc it takes too much time. (about 20ms for each
buffer).
I want this process to be zero-copy.

my data after processing is stored in a physically contiguous array pointer
(data->dest_vptr).
then I wrapped this array on a gst_memory and append it to the out_buffer
which I push to appsrc.

out_buffer = gst_buffer_new();
gst_buffer_append_memory (out_buffer,gst_memory_new_wrapped
(GST_MEMORY_FLAG_READONLY,data->dest_vptr, DEST_BUF_SIZE, 0, DEST_BUF_SIZE,
NULL, NULL));
source = gst_bin_get_by_name(GST_BIN(data->sink), "testsource");
ret = gst_app_src_push_buffer(GST_APP_SRC(source), out_buffer);
return ret;

in my pipeline, I have an accelerator that takes 19ms to finish its job.
filesrc -> decoder -> encoder -> filesink : 10ms per frame
filesrc -> decoder -> appsink -> [accelerator] -> appsrc -> encoder ->
filesink : 50ms per frame ( expecting approximately 30ms)

apprsc parameters:
testsource = gst_bin_get_by_name(GST_BIN(data->sink), "testsource");
    g_object_set(testsource, "format", GST_FORMAT_TIME, "block", FALSE,
NULL);
    gst_object_unref(testsource);

Am I doing an unnecessary copy somewhere? or having bad appsrc parameter
settings?
I also checked with fake sink directly after appsrc and made sure the appsrc
is bottlenecking.

thanks



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