static GstFlowReturn
gst_rtp_mpv_pay_flush (GstRTPMPVPay * rtpmpvpay, GstClockTime timestamp,
GstClockTime duration)
{
GstBuffer *outbuf;
GstFlowReturn ret;
guint avail;
guint8 *payload;
gint packet_size;
gint payload_size;
avail = gst_adapter_available (rtpmpvpay->adapter);
packet_size = gst_rtp_buffer_calc_packet_len (4 + avail, 0, 0);
/* check for the maximum size of the rtp buffer */
if (packet_size > GST_BASE_RTP_PAYLOAD_MTU (rtpmpvpay)) {
payload_size =
GST_BASE_RTP_PAYLOAD_MTU (rtpmpvpay) -
gst_rtp_buffer_calc_packet_len (4, 0, 0);
} else {
payload_size = avail;
}
outbuf = gst_rtp_buffer_new_allocate (4 + payload_size, 0, 0);
/* enable MPEG Video-specific header
*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | MBZ |T| TR | |N|S|B|E| P | | BFC | | FFC |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* AN FBV FFV
*/
payload = gst_rtp_buffer_get_payload (outbuf);
/* fill in the MPEG Video-specific header */
memset (payload, 0x0, 4);
/* copy stuff from adapter to payload */
gst_adapter_copy (rtpmpvpay->adapter, payload + 4, 0, payload_size);
GST_BUFFER_TIMESTAMP (outbuf) = rtpmpvpay->first_ts;
GST_BUFFER_DURATION (outbuf) = rtpmpvpay->duration;
GST_DEBUG_OBJECT (rtpmpvpay, "pushing buffer of size %d",
GST_BUFFER_SIZE (outbuf));
ret = gst_basertppayload_push (GST_BASE_RTP_PAYLOAD (rtpmpvpay), outbuf);
gst_adapter_flush (rtpmpvpay->adapter, payload_size);
/* update the timestamp and duration */
rtpmpvpay->first_ts = timestamp;
rtpmpvpay->duration = duration;
/* check if there is enough data for another rtp buffer */
avail = gst_adapter_available (rtpmpvpay->adapter);
packet_size = gst_rtp_buffer_calc_packet_len (4 + avail, 0, 0);
if (packet_size >= GST_BASE_RTP_PAYLOAD_MTU (rtpmpvpay) && ret == GST_FLOW_OK) {
GST_DEBUG_OBJECT (rtpmpvpay, "Have enough data for another rtp packet");
ret = gst_rtp_mpv_pay_flush (rtpmpvpay, timestamp, duration);
}
return ret;
}
static GstFlowReturn
gst_rtp_mpv_pay_handle_buffer (GstRTPBasePayload * basepayload,
GstBuffer * buffer)
{
GstRTPMPVPay *rtpmpvpay;
guint avail, packet_len;
GstClockTime timestamp, duration;
GstFlowReturn ret = GST_FLOW_OK;
rtpmpvpay = GST_RTP_MPV_PAY (basepayload);
timestamp = GST_BUFFER_TIMESTAMP (buffer);
duration = GST_BUFFER_DURATION (buffer);
if (GST_BUFFER_IS_DISCONT (buffer)) {
GST_DEBUG_OBJECT (rtpmpvpay, "DISCONT");
gst_rtp_mpv_pay_reset (rtpmpvpay);
}
avail = gst_adapter_available (rtpmpvpay->adapter);
if (duration == -1)
duration = 0;
if (rtpmpvpay->first_ts == GST_CLOCK_TIME_NONE || avail == 0)
rtpmpvpay->first_ts = timestamp;
if (avail == 0) {
rtpmpvpay->duration = duration;
} else {
rtpmpvpay->duration += duration;
}
gst_adapter_push (rtpmpvpay->adapter, buffer);
avail = gst_adapter_available (rtpmpvpay->adapter);
/* get packet length of previous data and this new data,
* payload length includes a 4 byte MPEG video-specific header */
packet_len = gst_rtp_buffer_calc_packet_len (avail, 4, 0);
GST_LOG_OBJECT (rtpmpvpay, "available %d, rtp packet length %d", avail,
packet_len);
if (gst_rtp_base_payload_is_filled (basepayload,
packet_len, rtpmpvpay->duration)) {
ret = gst_rtp_mpv_pay_flush (rtpmpvpay);
} else {
rtpmpvpay->first_ts = timestamp;
}
return ret;
}
static GstFlowReturn
gst_rtp_mpv_pay_handle_buffer (GstBaseRTPPayload * basepayload,
GstBuffer * buffer)
{
GstRTPMPVPay *rtpmpvpay;
guint size, avail, packet_len;
guint8 *data;
GstClockTime timestamp, duration;
GstFlowReturn ret;
rtpmpvpay = GST_RTP_MPV_PAY (basepayload);
size = GST_BUFFER_SIZE (buffer);
data = GST_BUFFER_DATA (buffer);
timestamp = GST_BUFFER_TIMESTAMP (buffer);
duration = GST_BUFFER_DURATION (buffer);
gst_adapter_push (rtpmpvpay->adapter, buffer);
avail = gst_adapter_available (rtpmpvpay->adapter);
/* Initialize new RTP payload */
if (avail == 0) {
rtpmpvpay->first_ts = timestamp;
rtpmpvpay->duration = duration;
}
/* get packet length of previous data and this new data,
* payload length includes a 4 byte MPEG video-specific header */
packet_len = gst_rtp_buffer_calc_packet_len (4 + avail, 0, 0);
if (gst_basertppayload_is_filled (basepayload,
packet_len, rtpmpvpay->duration + duration)) {
ret = gst_rtp_mpv_pay_flush (rtpmpvpay, timestamp, duration);
} else {
if (GST_CLOCK_TIME_IS_VALID (duration))
rtpmpvpay->duration += duration;
ret = GST_FLOW_OK;
}
return ret;
}
static gboolean
gst_rtp_mpv_pay_sink_event (GstRTPBasePayload * payload, GstEvent * event)
{
gboolean ret;
GstRTPMPVPay *rtpmpvpay;
rtpmpvpay = GST_RTP_MPV_PAY (payload);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
/* make sure we push the last packets in the adapter on EOS */
gst_rtp_mpv_pay_flush (rtpmpvpay);
break;
case GST_EVENT_FLUSH_STOP:
gst_rtp_mpv_pay_reset (rtpmpvpay);
break;
default:
break;
}
ret = GST_RTP_BASE_PAYLOAD_CLASS (parent_class)->sink_event (payload, event);
return ret;
}
