static GstFlowReturn
gst_rtp_mp2t_pay_handle_buffer (GstBaseRTPPayload * basepayload,
GstBuffer * buffer)
{
GstRTPMP2TPay *rtpmp2tpay;
guint size, avail, packet_len;
GstClockTime timestamp, duration;
GstFlowReturn ret;
rtpmp2tpay = GST_RTP_MP2T_PAY (basepayload);
size = GST_BUFFER_SIZE (buffer);
timestamp = GST_BUFFER_TIMESTAMP (buffer);
duration = GST_BUFFER_DURATION (buffer);
ret = GST_FLOW_OK;
avail = gst_adapter_available (rtpmp2tpay->adapter);
/* Initialize new RTP payload */
if (avail == 0) {
rtpmp2tpay->first_ts = timestamp;
rtpmp2tpay->duration = duration;
}
/* get packet length of previous data and this new data,
* payload length includes a 4 byte header */
packet_len = gst_rtp_buffer_calc_packet_len (4 + avail + size, 0, 0);
/* if this buffer is going to overflow the packet, flush what we
* have. */
if (gst_basertppayload_is_filled (basepayload,
packet_len, rtpmp2tpay->duration + duration)) {
ret = gst_rtp_mp2t_pay_flush (rtpmp2tpay);
rtpmp2tpay->first_ts = timestamp;
rtpmp2tpay->duration = duration;
/* keep filling the payload */
} else {
if (GST_CLOCK_TIME_IS_VALID (duration))
rtpmp2tpay->duration += duration;
}
/* copy buffer to adapter */
gst_adapter_push (rtpmp2tpay->adapter, buffer);
return ret;
}
static GstFlowReturn
gst_rtp_mpv_pay_handle_buffer (GstBaseRTPPayload * 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);
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_basertppayload_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_mpa_pay_handle_buffer (GstBaseRTPPayload * basepayload,
GstBuffer * buffer)
{
GstRtpMPAPay *rtpmpapay;
GstFlowReturn ret;
guint size, avail;
guint packet_len;
GstClockTime duration;
rtpmpapay = GST_RTP_MPA_PAY (basepayload);
size = GST_BUFFER_SIZE (buffer);
duration = GST_BUFFER_DURATION (buffer);
avail = gst_adapter_available (rtpmpapay->adapter);
if (avail == 0) {
rtpmpapay->first_ts = GST_BUFFER_TIMESTAMP (buffer);
rtpmpapay->duration = 0;
}
/* get packet length of previous data and this new data,
* payload length includes a 4 byte header */
packet_len = gst_rtp_buffer_calc_packet_len (4 + avail + size, 0, 0);
/* if this buffer is going to overflow the packet, flush what we
* have. */
if (gst_basertppayload_is_filled (basepayload,
packet_len, rtpmpapay->duration + duration)) {
ret = gst_rtp_mpa_pay_flush (rtpmpapay);
rtpmpapay->first_ts = GST_BUFFER_TIMESTAMP (buffer);
rtpmpapay->duration = 0;
} else {
ret = GST_FLOW_OK;
}
gst_adapter_push (rtpmpapay->adapter, buffer);
rtpmpapay->duration += duration;
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 GstFlowReturn
gst_rtp_celt_pay_handle_buffer (GstBaseRTPPayload * basepayload,
GstBuffer * buffer)
{
GstFlowReturn ret;
GstRtpCELTPay *rtpceltpay;
guint size, payload_len;
guint8 *data;
GstClockTime duration, packet_dur;
guint i, ssize, packet_len;
rtpceltpay = GST_RTP_CELT_PAY (basepayload);
ret = GST_FLOW_OK;
size = GST_BUFFER_SIZE (buffer);
data = GST_BUFFER_DATA (buffer);
switch (rtpceltpay->packet) {
case 0:
/* ident packet. We need to parse the headers to construct the RTP
* properties. */
if (!gst_rtp_celt_pay_parse_ident (rtpceltpay, data, size))
goto parse_error;
goto done;
case 1:
/* comment packet, we ignore it */
goto done;
default:
/* other packets go in the payload */
break;
}
duration = GST_BUFFER_DURATION (buffer);
GST_DEBUG_OBJECT (rtpceltpay,
"got buffer of duration %" GST_TIME_FORMAT ", size %u",
GST_TIME_ARGS (duration), size);
/* calculate the size of the size field and the payload */
ssize = 1;
for (i = size; i > 0xff; i -= 0xff)
ssize++;
GST_DEBUG_OBJECT (rtpceltpay, "bytes for size %u", ssize);
/* calculate the size and duration of the packet */
payload_len = ssize + size + rtpceltpay->bytes + rtpceltpay->sbytes;
packet_dur = rtpceltpay->qduration + duration;
packet_len = gst_rtp_buffer_calc_packet_len (payload_len, 0, 0);
if (gst_basertppayload_is_filled (basepayload, packet_len, packet_dur)) {
/* size or duration would overflow the packet, flush the queued data */
ret = gst_rtp_celt_pay_flush_queued (rtpceltpay);
}
/* queue the packet */
gst_rtp_celt_pay_add_queued (rtpceltpay, buffer, ssize, size, duration);
done:
rtpceltpay->packet++;
return ret;
/* ERRORS */
parse_error:
{
GST_ELEMENT_ERROR (rtpceltpay, STREAM, DECODE, (NULL),
("Error parsing first identification packet."));
return GST_FLOW_ERROR;
}
}
/* we expect buffers starting on startcodes.
*/
static GstFlowReturn
gst_rtp_mp4v_pay_handle_buffer (GstBaseRTPPayload * basepayload,
GstBuffer * buffer)
{
GstRtpMP4VPay *rtpmp4vpay;
GstFlowReturn ret;
guint size, avail;
guint packet_len;
guint8 *data;
gboolean flush;
gint strip;
GstClockTime timestamp, duration;
ret = GST_FLOW_OK;
rtpmp4vpay = GST_RTP_MP4V_PAY (basepayload);
size = GST_BUFFER_SIZE (buffer);
data = GST_BUFFER_DATA (buffer);
timestamp = GST_BUFFER_TIMESTAMP (buffer);
duration = GST_BUFFER_DURATION (buffer);
avail = gst_adapter_available (rtpmp4vpay->adapter);
if (duration == -1)
duration = 0;
/* empty buffer, take timestamp */
if (avail == 0) {
rtpmp4vpay->first_timestamp = timestamp;
rtpmp4vpay->duration = 0;
}
/* depay incomming data and see if we need to start a new RTP
* packet */
flush = gst_rtp_mp4v_pay_depay_data (rtpmp4vpay, data, size, &strip);
if (strip) {
/* strip off config if requested */
if (!rtpmp4vpay->send_config) {
GstBuffer *subbuf;
/* strip off header */
subbuf = gst_buffer_create_sub (buffer, strip, size - strip);
GST_BUFFER_TIMESTAMP (subbuf) = timestamp;
gst_buffer_unref (buffer);
buffer = subbuf;
size = GST_BUFFER_SIZE (buffer);
data = GST_BUFFER_DATA (buffer);
}
}
/* if we need to flush, do so now */
if (flush) {
ret = gst_rtp_mp4v_pay_flush (rtpmp4vpay);
rtpmp4vpay->first_timestamp = timestamp;
rtpmp4vpay->duration = 0;
avail = 0;
}
/* get packet length of data and see if we exceeded MTU. */
packet_len = gst_rtp_buffer_calc_packet_len (avail + size, 0, 0);
if (gst_basertppayload_is_filled (basepayload,
packet_len, rtpmp4vpay->duration + duration)) {
ret = gst_rtp_mp4v_pay_flush (rtpmp4vpay);
rtpmp4vpay->first_timestamp = timestamp;
rtpmp4vpay->duration = 0;
}
/* push new data */
gst_adapter_push (rtpmp4vpay->adapter, buffer);
rtpmp4vpay->duration += duration;
return ret;
}
static GstFlowReturn
gst_rtp_g723_pay_handle_buffer (GstBaseRTPPayload * payload, GstBuffer * buf)
{
GstFlowReturn ret = GST_FLOW_OK;
guint8 *data;
guint size;
guint8 HDR;
GstRTPG723Pay *pay;
GstClockTime packet_dur, timestamp;
guint payload_len, packet_len;
pay = GST_RTP_G723_PAY (payload);
size = GST_BUFFER_SIZE (buf);
data = GST_BUFFER_DATA (buf);
timestamp = GST_BUFFER_TIMESTAMP (buf);
if (GST_BUFFER_IS_DISCONT (buf)) {
/* flush everything on discont */
gst_adapter_clear (pay->adapter);
pay->timestamp = GST_CLOCK_TIME_NONE;
pay->duration = 0;
pay->discont = TRUE;
}
/* should be one of these sizes */
if (size != 4 && size != 20 && size != 24)
goto invalid_size;
/* check size by looking at the header bits */
HDR = data[0] & 0x3;
if (size_tab[HDR] != size)
goto wrong_size;
/* calculate packet size and duration */
payload_len = gst_adapter_available (pay->adapter) + size;
packet_dur = pay->duration + G723_FRAME_DURATION;
packet_len = gst_rtp_buffer_calc_packet_len (payload_len, 0, 0);
if (gst_basertppayload_is_filled (payload, packet_len, packet_dur)) {
/* size or duration would overflow the packet, flush the queued data */
ret = gst_rtp_g723_pay_flush (pay);
}
/* update timestamp, we keep the timestamp for the first packet in the adapter
* but are able to calculate it from next packets. */
if (timestamp != GST_CLOCK_TIME_NONE && pay->timestamp == GST_CLOCK_TIME_NONE) {
if (timestamp > pay->duration)
pay->timestamp = timestamp - pay->duration;
else
pay->timestamp = 0;
}
/* add packet to the queue */
gst_adapter_push (pay->adapter, buf);
pay->duration = packet_dur;
/* check if we can flush now */
if (pay->duration >= payload->min_ptime) {
ret = gst_rtp_g723_pay_flush (pay);
}
return ret;
/* WARNINGS */
invalid_size:
{
GST_ELEMENT_WARNING (pay, STREAM, WRONG_TYPE,
("Invalid input buffer size"),
("Input size should be 4, 20 or 24, got %u", size));
gst_buffer_unref (buf);
return GST_FLOW_OK;
}
wrong_size:
{
GST_ELEMENT_WARNING (pay, STREAM, WRONG_TYPE,
("Wrong input buffer size"),
("Expected input buffer size %u but got %u", size_tab[HDR], size));
gst_buffer_unref (buf);
return GST_FLOW_OK;
}
}