/* The create() virtual function is responsible for returning the next buffer.
* We just pop buffers off of the queue and block if necessary.
*/
static GstFlowReturn
shell_recorder_src_create (GstPushSrc *push_src,
GstBuffer **buffer_out)
{
ShellRecorderSrc *src = SHELL_RECORDER_SRC (push_src);
GstBuffer *buffer;
if (src->closed)
return GST_FLOW_EOS;
buffer = g_async_queue_pop (src->queue);
if (src->last_frame_time == 0)
src->last_frame_time = gst_clock_get_time (GST_CLOCK (src->clock));
if (buffer == RECORDER_QUEUE_END)
{
/* Returning UNEXPECTED here will cause a EOS message to be sent */
src->closed = TRUE;
return GST_FLOW_EOS;
}
shell_recorder_src_update_memory_used (src,
- (int)(gst_buffer_get_size(buffer) / 1024));
*buffer_out = buffer;
GST_BUFFER_DURATION(*buffer_out) = GST_CLOCK_DIFF (src->last_frame_time, gst_clock_get_time (GST_CLOCK (src->clock)));
src->last_frame_time = gst_clock_get_time (GST_CLOCK (src->clock));
return GST_FLOW_OK;
}
/* The create() virtual function is responsible for returning the next buffer.
* We just pop buffers off of the queue and block if necessary.
*/
static GstFlowReturn
shell_recorder_src_create (GstPushSrc *push_src,
GstBuffer **buffer_out)
{
ShellRecorderSrc *src = SHELL_RECORDER_SRC (push_src);
GstBuffer *buffer;
if (src->closed)
return GST_FLOW_UNEXPECTED;
buffer = g_async_queue_pop (src->queue);
if (buffer == RECORDER_QUEUE_END)
{
/* Returning UNEXPECTED here will cause a EOS message to be sent */
src->closed = TRUE;
return GST_FLOW_UNEXPECTED;
}
shell_recorder_src_update_memory_used (src,
- (int)(GST_BUFFER_SIZE(buffer) / 1024));
*buffer_out = buffer;
return GST_FLOW_OK;
}
/**
* shell_recorder_src_add_buffer:
*
* Adds a buffer to the internal queue to be pushed out at the next opportunity.
* There is no flow control, so arbitrary amounts of memory may be used by
* the buffers on the queue. The buffer contents must match the #GstCaps
* set in the :caps property.
*/
void
shell_recorder_src_add_buffer (ShellRecorderSrc *src,
GstBuffer *buffer)
{
g_return_if_fail (SHELL_IS_RECORDER_SRC (src));
g_return_if_fail (src->caps != NULL);
gst_buffer_set_caps (buffer, src->caps);
shell_recorder_src_update_memory_used (src,
(int) (GST_BUFFER_SIZE(buffer) / 1024));
g_async_queue_push (src->queue, gst_buffer_ref (buffer));
}
