static GstFlowReturn
gst_rtp_g723_pay_flush (GstRTPG723Pay * pay)
{
GstBuffer *outbuf;
GstFlowReturn ret;
guint8 *payload;
guint avail;
avail = gst_adapter_available (pay->adapter);
outbuf = gst_rtp_buffer_new_allocate (avail, 0, 0);
payload = gst_rtp_buffer_get_payload (outbuf);
GST_BUFFER_TIMESTAMP (outbuf) = pay->timestamp;
GST_BUFFER_DURATION (outbuf) = pay->duration;
/* copy G723 data as payload */
gst_adapter_copy (pay->adapter, payload, 0, avail);
/* flush bytes from adapter */
gst_adapter_flush (pay->adapter, avail);
pay->timestamp = GST_CLOCK_TIME_NONE;
pay->duration = 0;
/* set discont and marker */
if (pay->discont) {
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
gst_rtp_buffer_set_marker (outbuf, TRUE);
pay->discont = FALSE;
}
ret = gst_basertppayload_push (GST_BASE_RTP_PAYLOAD (pay), outbuf);
return ret;
}
static GstBuffer *
generate_test_buffer (guint seq_num, guint ssrc)
{
GstBuffer *buf;
guint8 *payload;
guint i;
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
gsize size = 10;
buf = gst_rtp_buffer_new_allocate (size, 0, 0);
GST_BUFFER_DTS (buf) = GST_MSECOND * 20 * seq_num;
GST_BUFFER_PTS (buf) = GST_MSECOND * 20 * seq_num;
gst_rtp_buffer_map (buf, GST_MAP_READWRITE, &rtp);
gst_rtp_buffer_set_payload_type (&rtp, 0);
gst_rtp_buffer_set_seq (&rtp, seq_num);
gst_rtp_buffer_set_timestamp (&rtp, 160 * seq_num);
gst_rtp_buffer_set_ssrc (&rtp, ssrc);
payload = gst_rtp_buffer_get_payload (&rtp);
for (i = 0; i < size; i++)
payload[i] = 0xff;
gst_rtp_buffer_unmap (&rtp);
return buf;
}
static GstBuffer *
generate_test_buffer_full (GstClockTime dts,
guint seq_num, guint32 rtp_ts, guint ssrc)
{
GstBuffer *buf;
guint8 *payload;
guint i;
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
buf = gst_rtp_buffer_new_allocate (TEST_BUF_SIZE, 0, 0);
GST_BUFFER_DTS (buf) = dts;
gst_rtp_buffer_map (buf, GST_MAP_READWRITE, &rtp);
gst_rtp_buffer_set_payload_type (&rtp, TEST_BUF_PT);
gst_rtp_buffer_set_seq (&rtp, seq_num);
gst_rtp_buffer_set_timestamp (&rtp, rtp_ts);
gst_rtp_buffer_set_ssrc (&rtp, ssrc);
payload = gst_rtp_buffer_get_payload (&rtp);
for (i = 0; i < TEST_BUF_SIZE; i++)
payload[i] = 0xff;
gst_rtp_buffer_unmap (&rtp);
return buf;
}
static GstBuffer *
generate_test_buffer (GstClockTime gst_ts,
gboolean marker_bit, guint seq_num, guint32 rtp_ts, guint ssrc)
{
GstBuffer *buf;
guint8 *payload;
guint i;
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
buf = gst_rtp_buffer_new_allocate (payload_size, 0, 0);
GST_BUFFER_DTS (buf) = gst_ts;
GST_BUFFER_PTS (buf) = gst_ts;
gst_rtp_buffer_map (buf, GST_MAP_READWRITE, &rtp);
gst_rtp_buffer_set_payload_type (&rtp, payload_type);
gst_rtp_buffer_set_marker (&rtp, marker_bit);
gst_rtp_buffer_set_seq (&rtp, seq_num);
gst_rtp_buffer_set_timestamp (&rtp, rtp_ts);
gst_rtp_buffer_set_ssrc (&rtp, ssrc);
payload = gst_rtp_buffer_get_payload (&rtp);
for (i = 0; i < payload_size; i++)
payload[i] = 0xff;
gst_rtp_buffer_unmap (&rtp);
return buf;
}
/**
* gst_base_rtp_audio_payload_push:
* @baseaudiopayload: a #GstBaseRTPPayload
* @data: data to set as payload
* @payload_len: length of payload
* @timestamp: a #GstClockTime
*
* Create an RTP buffer and store @payload_len bytes of @data as the
* payload. Set the timestamp on the new buffer to @timestamp before pushing
* the buffer downstream.
*
* Returns: a #GstFlowReturn
*
* Since: 0.10.13
*/
GstFlowReturn
gst_base_rtp_audio_payload_push (GstBaseRTPAudioPayload * baseaudiopayload,
const guint8 * data, guint payload_len, GstClockTime timestamp)
{
GstBaseRTPPayload *basepayload;
GstBuffer *outbuf;
guint8 *payload;
GstFlowReturn ret;
basepayload = GST_BASE_RTP_PAYLOAD (baseaudiopayload);
GST_DEBUG_OBJECT (baseaudiopayload, "Pushing %d bytes ts %" GST_TIME_FORMAT,
payload_len, GST_TIME_ARGS (timestamp));
/* create buffer to hold the payload */
outbuf = gst_rtp_buffer_new_allocate (payload_len, 0, 0);
/* copy payload */
payload = gst_rtp_buffer_get_payload (outbuf);
memcpy (payload, data, payload_len);
/* set metadata */
gst_base_rtp_audio_payload_set_meta (baseaudiopayload, outbuf, payload_len,
timestamp);
ret = gst_basertppayload_push (basepayload, outbuf);
return ret;
}
static GstFlowReturn
gst_rtp_celt_pay_flush_queued (GstRtpCELTPay * rtpceltpay)
{
GstFlowReturn ret;
GstBuffer *buf, *outbuf;
guint8 *payload, *spayload;
guint payload_len;
GstClockTime duration;
GstRTPBuffer rtp = { NULL, };
payload_len = rtpceltpay->bytes + rtpceltpay->sbytes;
duration = rtpceltpay->qduration;
GST_DEBUG_OBJECT (rtpceltpay, "flushing out %u, duration %" GST_TIME_FORMAT,
payload_len, GST_TIME_ARGS (rtpceltpay->qduration));
/* get a big enough packet for the sizes + payloads */
outbuf = gst_rtp_buffer_new_allocate (payload_len, 0, 0);
GST_BUFFER_DURATION (outbuf) = duration;
gst_rtp_buffer_map (outbuf, GST_MAP_WRITE, &rtp);
/* point to the payload for size headers and data */
spayload = gst_rtp_buffer_get_payload (&rtp);
payload = spayload + rtpceltpay->sbytes;
while ((buf = g_queue_pop_head (rtpceltpay->queue))) {
guint size;
/* copy first timestamp to output */
if (GST_BUFFER_TIMESTAMP (outbuf) == -1)
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
/* write the size to the header */
size = gst_buffer_get_size (buf);
while (size > 0xff) {
*spayload++ = 0xff;
size -= 0xff;
}
*spayload++ = size;
/* copy payload */
size = gst_buffer_get_size (buf);
gst_buffer_extract (buf, 0, payload, size);
payload += size;
gst_buffer_unref (buf);
}
gst_rtp_buffer_unmap (&rtp);
/* we consumed it all */
rtpceltpay->bytes = 0;
rtpceltpay->sbytes = 0;
rtpceltpay->qduration = 0;
ret = gst_rtp_base_payload_push (GST_RTP_BASE_PAYLOAD (rtpceltpay), outbuf);
return ret;
}
static GstFlowReturn
gst_rtp_mp2t_pay_flush (GstRTPMP2TPay * rtpmp2tpay)
{
guint avail;
guint8 *payload;
GstFlowReturn ret;
GstBuffer *outbuf;
avail = gst_adapter_available (rtpmp2tpay->adapter);
if (avail == 0)
return GST_FLOW_OK;
outbuf = gst_rtp_buffer_new_allocate (avail, 0, 0);
/* get payload */
payload = gst_rtp_buffer_get_payload (outbuf);
/* copy stuff from adapter to payload */
gst_adapter_copy (rtpmp2tpay->adapter, payload, 0, avail);
GST_BUFFER_TIMESTAMP (outbuf) = rtpmp2tpay->first_ts;
GST_BUFFER_DURATION (outbuf) = rtpmp2tpay->duration;
GST_DEBUG_OBJECT (rtpmp2tpay, "pushing buffer of size %d",
GST_BUFFER_SIZE (outbuf));
ret = gst_basertppayload_push (GST_BASE_RTP_PAYLOAD (rtpmp2tpay), outbuf);
/* flush the adapter content */
gst_adapter_flush (rtpmp2tpay->adapter, avail);
return ret;
}
static GstFlowReturn
gst_rtp_opus_pay_handle_buffer (GstRTPBasePayload * basepayload,
GstBuffer * buffer)
{
GstBuffer *outbuf;
GstClockTime pts, dts, duration;
CopyMetaData data;
pts = GST_BUFFER_PTS (buffer);
dts = GST_BUFFER_DTS (buffer);
duration = GST_BUFFER_DURATION (buffer);
outbuf = gst_rtp_buffer_new_allocate (0, 0, 0);
data.pay = GST_RTP_OPUS_PAY (basepayload);
data.outbuf = outbuf;
gst_buffer_foreach_meta (buffer, foreach_metadata, &data);
outbuf = gst_buffer_append (outbuf, buffer);
GST_BUFFER_PTS (outbuf) = pts;
GST_BUFFER_DTS (outbuf) = dts;
GST_BUFFER_DURATION (outbuf) = duration;
/* Push out */
return gst_rtp_base_payload_push (basepayload, outbuf);
}
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;
}
GstAlBuf* gst_al_alloc_rtp_buffer(guint payload_len, guint8 pad_len, guint8 csrc_count)
{
GstAlBuf *buf = g_new(GstAlBuf,1);
buf->m_buffer = gst_rtp_buffer_new_allocate(payload_len, pad_len, csrc_count);
buf->m_dptr = gst_rtp_buffer_get_payload(buf->m_buffer);
buf->m_dlen = gst_rtp_buffer_get_payload_len(buf->m_buffer);
return buf;
}
static GstBuffer *
gst_rtp_dtmf_src_create_next_rtp_packet (GstRTPDTMFSrc * dtmfsrc)
{
GstBuffer *buf;
GstRTPDTMFPayload *payload;
GstRTPBuffer rtpbuffer = GST_RTP_BUFFER_INIT;
buf = gst_rtp_buffer_new_allocate (sizeof (GstRTPDTMFPayload), 0, 0);
gst_rtp_buffer_map (buf, GST_MAP_READWRITE, &rtpbuffer);
gst_rtp_dtmf_prepare_rtp_headers (dtmfsrc, &rtpbuffer);
/* timestamp and duration of GstBuffer */
/* Redundant buffer have no duration ... */
if (dtmfsrc->redundancy_count > 1)
GST_BUFFER_DURATION (buf) = 0;
else
GST_BUFFER_DURATION (buf) = dtmfsrc->ptime * GST_MSECOND;
GST_BUFFER_PTS (buf) = dtmfsrc->timestamp;
payload = (GstRTPDTMFPayload *) gst_rtp_buffer_get_payload (&rtpbuffer);
/* copy payload and convert to network-byte order */
memmove (payload, dtmfsrc->payload, sizeof (GstRTPDTMFPayload));
payload->duration = g_htons (payload->duration);
if (dtmfsrc->redundancy_count <= 1 && dtmfsrc->last_packet) {
GstClockTime inter_digit_interval = MIN_INTER_DIGIT_INTERVAL;
if (inter_digit_interval % dtmfsrc->ptime != 0)
inter_digit_interval += dtmfsrc->ptime -
(MIN_INTER_DIGIT_INTERVAL % dtmfsrc->ptime);
GST_BUFFER_DURATION (buf) += inter_digit_interval * GST_MSECOND;
}
GST_LOG_OBJECT (dtmfsrc, "Creating new buffer with event %u duration "
" gst: %" GST_TIME_FORMAT " at %" GST_TIME_FORMAT "(rtp ts:%u dur:%u)",
dtmfsrc->payload->event, GST_TIME_ARGS (GST_BUFFER_DURATION (buf)),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), dtmfsrc->rtp_timestamp,
dtmfsrc->payload->duration);
/* duration of DTMF payloadfor the NEXT packet */
/* not updated for redundant packets */
if (dtmfsrc->redundancy_count <= 1)
dtmfsrc->payload->duration += dtmfsrc->ptime * dtmfsrc->clock_rate / 1000;
if (GST_CLOCK_TIME_IS_VALID (dtmfsrc->timestamp))
dtmfsrc->timestamp += GST_BUFFER_DURATION (buf);
gst_rtp_buffer_unmap (&rtpbuffer);
return buf;
}
static GstFlowReturn
gst_rtp_mpv_pay_flush (GstRTPMPVPay * rtpmpvpay)
{
GstBuffer *outbuf;
GstFlowReturn ret;
guint avail;
guint8 *payload;
avail = gst_adapter_available (rtpmpvpay->adapter);
ret = GST_FLOW_OK;
while (avail > 0) {
guint towrite;
guint packet_len;
guint payload_len;
packet_len = gst_rtp_buffer_calc_packet_len (avail, 4, 0);
towrite = MIN (packet_len, GST_BASE_RTP_PAYLOAD_MTU (rtpmpvpay));
payload_len = gst_rtp_buffer_calc_payload_len (towrite, 4, 0);
outbuf = gst_rtp_buffer_new_allocate (payload_len, 4, 0);
payload = gst_rtp_buffer_get_payload (outbuf);
/* 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
*/
/* fill in the MPEG Video-specific header
* data is set to 0x0 here
*/
memset (payload, 0x0, 4);
gst_adapter_copy (rtpmpvpay->adapter, payload + 4, 0, payload_len);
gst_adapter_flush (rtpmpvpay->adapter, payload_len);
avail -= payload_len;
gst_rtp_buffer_set_marker (outbuf, avail == 0);
GST_BUFFER_TIMESTAMP (outbuf) = rtpmpvpay->first_ts;
ret = gst_basertppayload_push (GST_BASE_RTP_PAYLOAD (rtpmpvpay), outbuf);
}
return ret;
}
static GstFlowReturn
gst_rtp_sbc_pay_flush_buffers (GstRtpSBCPay * sbcpay)
{
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
guint available;
guint max_payload;
GstBuffer *outbuf;
guint8 *payload_data;
guint frame_count;
guint payload_length;
struct rtp_payload *payload;
if (sbcpay->frame_length == 0) {
GST_ERROR_OBJECT (sbcpay, "Frame length is 0");
return GST_FLOW_ERROR;
}
available = gst_adapter_available (sbcpay->adapter);
max_payload =
gst_rtp_buffer_calc_payload_len (GST_RTP_BASE_PAYLOAD_MTU (sbcpay) -
RTP_SBC_PAYLOAD_HEADER_SIZE, 0, 0);
max_payload = MIN (max_payload, available);
frame_count = max_payload / sbcpay->frame_length;
payload_length = frame_count * sbcpay->frame_length;
if (payload_length == 0) /* Nothing to send */
return GST_FLOW_OK;
outbuf = gst_rtp_buffer_new_allocate (payload_length +
RTP_SBC_PAYLOAD_HEADER_SIZE, 0, 0);
/* get payload */
gst_rtp_buffer_map (outbuf, GST_MAP_WRITE, &rtp);
gst_rtp_buffer_set_payload_type (&rtp, GST_RTP_BASE_PAYLOAD_PT (sbcpay));
/* write header and copy data into payload */
payload_data = gst_rtp_buffer_get_payload (&rtp);
payload = (struct rtp_payload *) payload_data;
memset (payload, 0, sizeof (struct rtp_payload));
payload->frame_count = frame_count;
gst_adapter_copy (sbcpay->adapter, payload_data +
RTP_SBC_PAYLOAD_HEADER_SIZE, 0, payload_length);
gst_rtp_buffer_unmap (&rtp);
gst_adapter_flush (sbcpay->adapter, payload_length);
/* FIXME: what about duration? */
GST_BUFFER_PTS (outbuf) = sbcpay->timestamp;
GST_DEBUG_OBJECT (sbcpay, "Pushing %d bytes", payload_length);
return gst_rtp_base_payload_push (GST_RTP_BASE_PAYLOAD (sbcpay), outbuf);
}
/**
* gst_rtp_buffer_new_allocate_len:
* @packet_len: the total length of the packet
* @pad_len: the amount of padding
* @csrc_count: the number of CSRC entries
*
* Create a new #GstBuffer that can hold an RTP packet that is exactly
* @packet_len long. The length of the payload depends on @pad_len and
* @csrc_count and can be calculated with gst_rtp_buffer_calc_payload_len().
* All RTP header fields will be set to 0/FALSE.
*
* Returns: A newly allocated buffer that can hold an RTP packet of @packet_len.
*/
GstBuffer *
gst_rtp_buffer_new_allocate_len (guint packet_len, guint8 pad_len,
guint8 csrc_count)
{
guint len;
g_return_val_if_fail (csrc_count <= 15, NULL);
len = gst_rtp_buffer_calc_payload_len (packet_len, pad_len, csrc_count);
return gst_rtp_buffer_new_allocate (len, pad_len, csrc_count);
}
static GstFlowReturn
gst_rtp_opus_pay_handle_buffer (GstRTPBasePayload * basepayload,
GstBuffer * buffer)
{
GstBuffer *outbuf;
outbuf = gst_rtp_buffer_new_allocate (0, 0, 0);
outbuf = gst_buffer_append (outbuf, gst_buffer_ref (buffer));
/* Push out */
return gst_rtp_base_payload_push (basepayload, outbuf);
}
static GstFlowReturn
gst_rtp_gsm_pay_handle_buffer (GstBaseRTPPayload * basepayload,
GstBuffer * buffer)
{
GstRTPGSMPay *rtpgsmpay;
guint size, payload_len;
GstBuffer *outbuf;
guint8 *payload, *data;
GstClockTime timestamp, duration;
GstFlowReturn ret;
rtpgsmpay = GST_RTP_GSM_PAY (basepayload);
size = GST_BUFFER_SIZE (buffer);
timestamp = GST_BUFFER_TIMESTAMP (buffer);
duration = GST_BUFFER_DURATION (buffer);
/* FIXME, only one GSM frame per RTP packet for now */
payload_len = size;
/* FIXME, just error out for now */
if (payload_len > GST_BASE_RTP_PAYLOAD_MTU (rtpgsmpay)) {
GST_ELEMENT_ERROR (rtpgsmpay, STREAM, ENCODE, (NULL),
("payload_len %u > mtu %u", payload_len,
GST_BASE_RTP_PAYLOAD_MTU (rtpgsmpay)));
return GST_FLOW_ERROR;
}
outbuf = gst_rtp_buffer_new_allocate (payload_len, 0, 0);
/* copy timestamp and duration */
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
GST_BUFFER_DURATION (outbuf) = duration;
/* get payload */
payload = gst_rtp_buffer_get_payload (outbuf);
data = GST_BUFFER_DATA (buffer);
/* copy data in payload */
memcpy (&payload[0], data, size);
gst_buffer_unref (buffer);
GST_DEBUG ("gst_rtp_gsm_pay_chain: pushing buffer of size %d",
GST_BUFFER_SIZE (outbuf));
ret = gst_basertppayload_push (basepayload, outbuf);
return ret;
}
static GstFlowReturn
gst_rtp_mp2t_pay_flush (GstRTPMP2TPay * rtpmp2tpay)
{
guint avail, mtu;
GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *outbuf;
avail = gst_adapter_available (rtpmp2tpay->adapter);
mtu = GST_RTP_BASE_PAYLOAD_MTU (rtpmp2tpay);
while (avail > 0 && (ret == GST_FLOW_OK)) {
guint towrite;
guint payload_len;
guint packet_len;
GstBuffer *paybuf;
/* this will be the total length of the packet */
packet_len = gst_rtp_buffer_calc_packet_len (avail, 0, 0);
/* fill one MTU or all available bytes */
towrite = MIN (packet_len, mtu);
/* this is the payload length */
payload_len = gst_rtp_buffer_calc_payload_len (towrite, 0, 0);
payload_len -= payload_len % 188;
/* need whole packets */
if (!payload_len)
break;
/* create buffer to hold the payload */
outbuf = gst_rtp_buffer_new_allocate (0, 0, 0);
/* get payload */
paybuf = gst_adapter_take_buffer_fast (rtpmp2tpay->adapter, payload_len);
gst_rtp_copy_meta (GST_ELEMENT_CAST (rtpmp2tpay), outbuf, paybuf, 0);
outbuf = gst_buffer_append (outbuf, paybuf);
avail -= payload_len;
GST_BUFFER_PTS (outbuf) = rtpmp2tpay->first_ts;
GST_BUFFER_DURATION (outbuf) = rtpmp2tpay->duration;
GST_DEBUG_OBJECT (rtpmp2tpay, "pushing buffer of size %u",
(guint) gst_buffer_get_size (outbuf));
ret = gst_rtp_base_payload_push (GST_RTP_BASE_PAYLOAD (rtpmp2tpay), outbuf);
}
return ret;
}
static GstFlowReturn
gst_rtp_mp4v_pay_flush (GstRtpMP4VPay * rtpmp4vpay)
{
guint avail;
GstBuffer *outbuf;
GstFlowReturn ret;
/* the data available in the adapter is either smaller
* than the MTU or bigger. In the case it is smaller, the complete
* adapter contents can be put in one packet. In the case the
* adapter has more than one MTU, we need to split the MP4V data
* over multiple packets. */
avail = gst_adapter_available (rtpmp4vpay->adapter);
ret = GST_FLOW_OK;
while (avail > 0) {
guint towrite;
guint8 *payload;
guint payload_len;
guint packet_len;
/* this will be the total lenght of the packet */
packet_len = gst_rtp_buffer_calc_packet_len (avail, 0, 0);
/* fill one MTU or all available bytes */
towrite = MIN (packet_len, GST_BASE_RTP_PAYLOAD_MTU (rtpmp4vpay));
/* this is the payload length */
payload_len = gst_rtp_buffer_calc_payload_len (towrite, 0, 0);
/* create buffer to hold the payload */
outbuf = gst_rtp_buffer_new_allocate (payload_len, 0, 0);
/* copy payload */
payload = gst_rtp_buffer_get_payload (outbuf);
gst_adapter_copy (rtpmp4vpay->adapter, payload, 0, payload_len);
gst_adapter_flush (rtpmp4vpay->adapter, payload_len);
avail -= payload_len;
gst_rtp_buffer_set_marker (outbuf, avail == 0);
GST_BUFFER_TIMESTAMP (outbuf) = rtpmp4vpay->first_timestamp;
ret = gst_basertppayload_push (GST_BASE_RTP_PAYLOAD (rtpmp4vpay), outbuf);
}
return ret;
}
static GstFlowReturn
gst_rtp_gsm_pay_handle_buffer (GstRTPBasePayload * basepayload,
GstBuffer * buffer)
{
GstRTPGSMPay *rtpgsmpay;
guint payload_len;
GstBuffer *outbuf;
GstClockTime timestamp, duration;
GstFlowReturn ret;
rtpgsmpay = GST_RTP_GSM_PAY (basepayload);
timestamp = GST_BUFFER_PTS (buffer);
duration = GST_BUFFER_DURATION (buffer);
/* FIXME, only one GSM frame per RTP packet for now */
payload_len = gst_buffer_get_size (buffer);
/* FIXME, just error out for now */
if (payload_len > GST_RTP_BASE_PAYLOAD_MTU (rtpgsmpay))
goto too_big;
outbuf = gst_rtp_buffer_new_allocate (payload_len, 0, 0);
/* copy timestamp and duration */
GST_BUFFER_PTS (outbuf) = timestamp;
GST_BUFFER_DURATION (outbuf) = duration;
gst_rtp_copy_meta (GST_ELEMENT_CAST (rtpgsmpay), outbuf, buffer,
g_quark_from_static_string (GST_META_TAG_AUDIO_STR));
/* append payload */
outbuf = gst_buffer_append (outbuf, buffer);
GST_DEBUG ("gst_rtp_gsm_pay_chain: pushing buffer of size %" G_GSIZE_FORMAT,
gst_buffer_get_size (outbuf));
ret = gst_rtp_base_payload_push (basepayload, outbuf);
return ret;
/* ERRORS */
too_big:
{
GST_ELEMENT_ERROR (rtpgsmpay, STREAM, ENCODE, (NULL),
("payload_len %u > mtu %u", payload_len,
GST_RTP_BASE_PAYLOAD_MTU (rtpgsmpay)));
return GST_FLOW_ERROR;
}
}
static GstBuffer *
gst_rtp_dtmf_src_create_next_rtp_packet (GstRTPDTMFSrc * dtmfsrc)
{
GstBuffer *buf = NULL;
/* create buffer to hold the payload */
buf = gst_rtp_buffer_new_allocate (sizeof (GstRTPDTMFPayload), 0, 0);
gst_rtp_dtmf_prepare_buffer_data (dtmfsrc, buf);
/* Set caps on the buffer before pushing it */
gst_buffer_set_caps (buf, GST_PAD_CAPS (GST_BASE_SRC_PAD (dtmfsrc)));
return buf;
}
static GstFlowReturn gst_rtp_sbc_pay_flush_buffers(GstRtpSBCPay *sbcpay)
{
guint available;
guint max_payload;
GstBuffer *outbuf;
guint8 *payload_data;
guint frame_count;
guint payload_length;
struct rtp_payload *payload;
if (sbcpay->frame_length == 0) {
GST_ERROR_OBJECT(sbcpay, "Frame length is 0");
return GST_FLOW_ERROR;
}
available = gst_adapter_available(sbcpay->adapter);
max_payload = gst_rtp_buffer_calc_payload_len(
GST_BASE_RTP_PAYLOAD_MTU(sbcpay) - RTP_SBC_PAYLOAD_HEADER_SIZE,
0, 0);
max_payload = MIN(max_payload, available);
frame_count = max_payload / sbcpay->frame_length;
payload_length = frame_count * sbcpay->frame_length;
if (payload_length == 0) /* Nothing to send */
return GST_FLOW_OK;
outbuf = gst_rtp_buffer_new_allocate(payload_length +
RTP_SBC_PAYLOAD_HEADER_SIZE, 0, 0);
gst_rtp_buffer_set_payload_type(outbuf,
GST_BASE_RTP_PAYLOAD_PT(sbcpay));
payload_data = gst_rtp_buffer_get_payload(outbuf);
payload = (struct rtp_payload *) payload_data;
memset(payload, 0, sizeof(struct rtp_payload));
payload->frame_count = frame_count;
gst_adapter_copy(sbcpay->adapter, payload_data +
RTP_SBC_PAYLOAD_HEADER_SIZE, 0, payload_length);
gst_adapter_flush(sbcpay->adapter, payload_length);
GST_BUFFER_TIMESTAMP(outbuf) = sbcpay->timestamp;
GST_DEBUG_OBJECT(sbcpay, "Pushing %d bytes", payload_length);
return gst_basertppayload_push(GST_BASE_RTP_PAYLOAD(sbcpay), outbuf);
}
static GstBuffer *
create_rtp_buffer (guint32 ssrc, guint8 payload_type, guint16 seqnum)
{
GstRTPBuffer rtpbuf = GST_RTP_BUFFER_INIT;
guint payload_size = 29;
guint64 timestamp = gst_util_uint64_scale_int (seqnum, 90000, 30);
GstBuffer *buf = gst_rtp_buffer_new_allocate (payload_size, 0, 0);
gst_rtp_buffer_map (buf, GST_MAP_WRITE, &rtpbuf);
gst_rtp_buffer_set_ssrc (&rtpbuf, ssrc);
gst_rtp_buffer_set_payload_type (&rtpbuf, payload_type);
gst_rtp_buffer_set_seq (&rtpbuf, seqnum);
gst_rtp_buffer_set_timestamp (&rtpbuf, (guint32) timestamp);
memset (gst_rtp_buffer_get_payload (&rtpbuf), 0x29, payload_size);
gst_rtp_buffer_unmap (&rtpbuf);
return buf;
}
/* Create a RTP buffer without the extension */
static GstBuffer *
create_rtp_buffer (GstClockTime timestamp, gboolean clean_point)
{
GstBuffer *buffer_in;
GstRTPBuffer rtpbuffer_in = GST_RTP_BUFFER_INIT;
buffer_in = gst_rtp_buffer_new_allocate (0, 0, 0);
GST_BUFFER_PTS (buffer_in) = timestamp;
if (!clean_point)
GST_BUFFER_FLAG_SET (buffer_in, GST_BUFFER_FLAG_DELTA_UNIT);
fail_unless (gst_rtp_buffer_map (buffer_in, GST_MAP_READ, &rtpbuffer_in));
fail_if (gst_rtp_buffer_get_extension (&rtpbuffer_in));
gst_rtp_buffer_unmap (&rtpbuffer_in);
return buffer_in;
}
static void
send_rtp_packet (GstPad * src, guint timestamp, gboolean marker, gboolean end,
guint number, guint volume, guint duration)
{
GstBuffer *buf;
GstRTPBuffer rtpbuf = GST_RTP_BUFFER_INIT;
gchar *payload;
static guint seqnum = 1;
buf = gst_rtp_buffer_new_allocate (4, 0, 0);
fail_unless (gst_rtp_buffer_map (buf, GST_MAP_READWRITE, &rtpbuf));
gst_rtp_buffer_set_seq (&rtpbuf, seqnum++);
gst_rtp_buffer_set_timestamp (&rtpbuf, timestamp);
gst_rtp_buffer_set_marker (&rtpbuf, marker);
payload = gst_rtp_buffer_get_payload (&rtpbuf);
payload[0] = number;
payload[1] = volume | (end ? END_BIT : 0);
GST_WRITE_UINT16_BE (payload + 2, duration);
gst_rtp_buffer_unmap (&rtpbuf);
fail_unless (gst_pad_push (src, buf) == GST_FLOW_OK);
}
static GstFlowReturn
gst_rtp_g723_pay_flush (GstRTPG723Pay * pay)
{
GstBuffer *outbuf, *payload_buf;
GstFlowReturn ret;
guint avail;
GstRTPBuffer rtp = { NULL };
avail = gst_adapter_available (pay->adapter);
outbuf = gst_rtp_buffer_new_allocate (0, 0, 0);
gst_rtp_buffer_map (outbuf, GST_MAP_WRITE, &rtp);
GST_BUFFER_PTS (outbuf) = pay->timestamp;
GST_BUFFER_DURATION (outbuf) = pay->duration;
/* copy G723 data as payload */
payload_buf = gst_adapter_take_buffer_fast (pay->adapter, avail);
pay->timestamp = GST_CLOCK_TIME_NONE;
pay->duration = 0;
/* set discont and marker */
if (pay->discont) {
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
gst_rtp_buffer_set_marker (&rtp, TRUE);
pay->discont = FALSE;
}
gst_rtp_buffer_unmap (&rtp);
gst_rtp_copy_meta (GST_ELEMENT_CAST (pay), outbuf, payload_buf,
g_quark_from_static_string (GST_META_TAG_AUDIO_STR));
outbuf = gst_buffer_append (outbuf, payload_buf);
ret = gst_rtp_base_payload_push (GST_RTP_BASE_PAYLOAD (pay), outbuf);
return ret;
}
static void
lock_check_cb (GstPad * pad, int i)
{
GstBuffer *inbuf;
if (i % 2) {
fail_unless (buffers == NULL);
} else {
GstRTPBuffer rtpbuffer = GST_RTP_BUFFER_INIT;
fail_unless (buffers && g_list_length (buffers) == 1);
gst_rtp_buffer_map (buffers->data, GST_MAP_READ, &rtpbuffer);
fail_unless_equals_int (66, gst_rtp_buffer_get_ssrc (&rtpbuffer));
fail_unless_equals_int64 (200 - 57 + 1000 + i,
gst_rtp_buffer_get_timestamp (&rtpbuffer));
fail_unless_equals_int (100 + 1 + i, gst_rtp_buffer_get_seq (&rtpbuffer));
gst_rtp_buffer_unmap (&rtpbuffer);
inbuf = gst_rtp_buffer_new_allocate (10, 0, 0);
GST_BUFFER_PTS (inbuf) = i * 1000 + 500;
GST_BUFFER_DURATION (inbuf) = 1000;
gst_rtp_buffer_map (inbuf, GST_MAP_WRITE, &rtpbuffer);
gst_rtp_buffer_set_version (&rtpbuffer, 2);
gst_rtp_buffer_set_payload_type (&rtpbuffer, 98);
gst_rtp_buffer_set_ssrc (&rtpbuffer, 44);
gst_rtp_buffer_set_timestamp (&rtpbuffer, 200 + i);
gst_rtp_buffer_set_seq (&rtpbuffer, 2000 + i);
gst_rtp_buffer_unmap (&rtpbuffer);
fail_unless (gst_pad_push (pad, inbuf) == GST_FLOW_OK);
g_list_foreach (buffers, (GFunc) gst_buffer_unref, NULL);
g_list_free (buffers);
buffers = NULL;
}
}
static GstFlowReturn
gst_rtp_klv_pay_handle_buffer (GstRTPBasePayload * basepayload, GstBuffer * buf)
{
GstFlowReturn ret = GST_FLOW_OK;
GstBufferList *list = NULL;
GstRtpKlvPay *pay;
GstMapInfo map;
GstBuffer *outbuf = NULL;
gsize offset;
guint mtu, rtp_header_size, max_payload_size;
pay = GST_RTP_KLV_PAY (basepayload);
mtu = GST_RTP_BASE_PAYLOAD_MTU (basepayload);
rtp_header_size = gst_rtp_buffer_calc_header_len (0);
max_payload_size = mtu - rtp_header_size;
gst_buffer_map (buf, &map, GST_MAP_READ);
if (map.size == 0)
goto done;
/* KLV coding shall use and only use a fixed 16-byte SMPTE-administered
* Universal Label, according to SMPTE 298M as Key (Rec. ITU R-BT.1653-1) */
if (map.size < 16 || GST_READ_UINT32_BE (map.data) != 0x060E2B34)
goto bad_input;
if (map.size > max_payload_size)
list = gst_buffer_list_new ();
GST_LOG_OBJECT (pay, "%" G_GSIZE_FORMAT " bytes of data to payload",
map.size);
offset = 0;
while (offset < map.size) {
GstBuffer *payloadbuf;
GstRTPBuffer rtp = { NULL };
guint payload_size;
guint bytes_left;
bytes_left = map.size - offset;
payload_size = MIN (bytes_left, max_payload_size);
outbuf = gst_rtp_buffer_new_allocate (0, 0, 0);
if (payload_size == bytes_left) {
GST_LOG_OBJECT (pay, "last packet of KLV unit");
gst_rtp_buffer_map (outbuf, GST_MAP_WRITE, &rtp);
gst_rtp_buffer_set_marker (&rtp, 1);
gst_rtp_buffer_unmap (&rtp);
}
GST_LOG_OBJECT (pay, "packet with payload size %u", payload_size);
gst_rtp_copy_meta (GST_ELEMENT_CAST (pay), outbuf, buf, 0);
payloadbuf = gst_buffer_copy_region (buf, GST_BUFFER_COPY_MEMORY,
offset, payload_size);
/* join rtp header + payload memory parts */
outbuf = gst_buffer_append (outbuf, payloadbuf);
GST_BUFFER_PTS (outbuf) = GST_BUFFER_PTS (buf);
GST_BUFFER_DTS (outbuf) = GST_BUFFER_DTS (buf);
/* and add to list */
if (list != NULL)
gst_buffer_list_insert (list, -1, outbuf);
offset += payload_size;
}
done:
gst_buffer_unmap (buf, &map);
gst_buffer_unref (buf);
if (list != NULL)
ret = gst_rtp_base_payload_push_list (basepayload, list);
else if (outbuf != NULL)
ret = gst_rtp_base_payload_push (basepayload, outbuf);
return ret;
/* ERRORS */
bad_input:
{
GST_ERROR_OBJECT (pay, "Input doesn't look like a KLV packet, ignoring");
goto done;
}
}
static GstFlowReturn
gst_rtp_speex_pay_handle_buffer (GstBaseRTPPayload * basepayload,
GstBuffer * buffer)
{
GstRtpSPEEXPay *rtpspeexpay;
guint size, payload_len;
GstBuffer *outbuf;
guint8 *payload, *data;
GstClockTime timestamp, duration;
GstFlowReturn ret;
rtpspeexpay = GST_RTP_SPEEX_PAY (basepayload);
size = GST_BUFFER_SIZE (buffer);
data = GST_BUFFER_DATA (buffer);
switch (rtpspeexpay->packet) {
case 0:
/* ident packet. We need to parse the headers to construct the RTP
* properties. */
if (!gst_rtp_speex_pay_parse_ident (rtpspeexpay, data, size))
goto parse_error;
ret = GST_FLOW_OK;
goto done;
case 1:
/* comment packet, we ignore it */
ret = GST_FLOW_OK;
goto done;
default:
/* other packets go in the payload */
break;
}
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_GAP)) {
ret = GST_FLOW_OK;
goto done;
}
timestamp = GST_BUFFER_TIMESTAMP (buffer);
duration = GST_BUFFER_DURATION (buffer);
/* FIXME, only one SPEEX frame per RTP packet for now */
payload_len = size;
outbuf = gst_rtp_buffer_new_allocate (payload_len, 0, 0);
/* FIXME, assert for now */
g_assert (payload_len <= GST_BASE_RTP_PAYLOAD_MTU (rtpspeexpay));
/* copy timestamp and duration */
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
GST_BUFFER_DURATION (outbuf) = duration;
/* get payload */
payload = gst_rtp_buffer_get_payload (outbuf);
/* copy data in payload */
memcpy (&payload[0], data, size);
ret = gst_basertppayload_push (basepayload, outbuf);
done:
gst_buffer_unref (buffer);
rtpspeexpay->packet++;
return ret;
/* ERRORS */
parse_error:
{
GST_ELEMENT_ERROR (rtpspeexpay, STREAM, DECODE, (NULL),
("Error parsing first identification packet."));
gst_buffer_unref (buffer);
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
gst_rtp_mpa_pay_flush (GstRtpMPAPay * rtpmpapay)
{
guint avail;
GstBuffer *outbuf;
GstFlowReturn ret;
guint16 frag_offset;
GstBufferList *list;
/* the data available in the adapter is either smaller
* than the MTU or bigger. In the case it is smaller, the complete
* adapter contents can be put in one packet. In the case the
* adapter has more than one MTU, we need to split the MPA data
* over multiple packets. The frag_offset in each packet header
* needs to be updated with the position in the MPA frame. */
avail = gst_adapter_available (rtpmpapay->adapter);
ret = GST_FLOW_OK;
list =
gst_buffer_list_new_sized (avail / (GST_RTP_BASE_PAYLOAD_MTU (rtpmpapay) -
RTP_HEADER_LEN) + 1);
frag_offset = 0;
while (avail > 0) {
guint towrite;
guint8 *payload;
guint payload_len;
guint packet_len;
GstRTPBuffer rtp = { NULL };
GstBuffer *paybuf;
/* this will be the total length of the packet */
packet_len = gst_rtp_buffer_calc_packet_len (4 + avail, 0, 0);
/* fill one MTU or all available bytes */
towrite = MIN (packet_len, GST_RTP_BASE_PAYLOAD_MTU (rtpmpapay));
/* this is the payload length */
payload_len = gst_rtp_buffer_calc_payload_len (towrite, 0, 0);
/* create buffer to hold the payload */
outbuf = gst_rtp_buffer_new_allocate (4, 0, 0);
gst_rtp_buffer_map (outbuf, GST_MAP_WRITE, &rtp);
payload_len -= 4;
gst_rtp_buffer_set_payload_type (&rtp, GST_RTP_PAYLOAD_MPA);
/*
* 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 | Frag_offset |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
payload = gst_rtp_buffer_get_payload (&rtp);
payload[0] = 0;
payload[1] = 0;
payload[2] = frag_offset >> 8;
payload[3] = frag_offset & 0xff;
avail -= payload_len;
frag_offset += payload_len;
if (avail == 0)
gst_rtp_buffer_set_marker (&rtp, TRUE);
gst_rtp_buffer_unmap (&rtp);
paybuf = gst_adapter_take_buffer_fast (rtpmpapay->adapter, payload_len);
gst_rtp_copy_meta (GST_ELEMENT_CAST (rtpmpapay), outbuf, paybuf,
g_quark_from_static_string (GST_META_TAG_AUDIO_STR));
outbuf = gst_buffer_append (outbuf, paybuf);
GST_BUFFER_PTS (outbuf) = rtpmpapay->first_ts;
GST_BUFFER_DURATION (outbuf) = rtpmpapay->duration;
gst_buffer_list_add (list, outbuf);
}
ret = gst_rtp_base_payload_push_list (GST_RTP_BASE_PAYLOAD (rtpmpapay), list);
return ret;
}
static GstFlowReturn
gst_rtp_vraw_pay_handle_buffer (GstRTPBasePayload * payload, GstBuffer * buffer)
{
GstRtpVRawPay *rtpvrawpay;
GstFlowReturn ret = GST_FLOW_OK;
gfloat packets_per_packline;
guint pgroups_per_packet;
guint packlines_per_list, buffers_per_list;
guint lines_delay; /* after how many packed lines we push out a buffer list */
guint last_line; /* last pack line number we pushed out a buffer list */
guint line, offset;
guint8 *p0, *yp, *up, *vp;
guint ystride, uvstride;
guint xinc, yinc;
guint pgroup;
guint mtu;
guint width, height;
gint field, fields;
GstVideoFormat format;
GstVideoFrame frame;
gint interlaced;
gboolean use_buffer_lists;
GstBufferList *list = NULL;
GstRTPBuffer rtp = { NULL, };
rtpvrawpay = GST_RTP_VRAW_PAY (payload);
gst_video_frame_map (&frame, &rtpvrawpay->vinfo, buffer, GST_MAP_READ);
GST_LOG_OBJECT (rtpvrawpay, "new frame of %" G_GSIZE_FORMAT " bytes",
gst_buffer_get_size (buffer));
/* get pointer and strides of the planes */
p0 = GST_VIDEO_FRAME_PLANE_DATA (&frame, 0);
yp = GST_VIDEO_FRAME_COMP_DATA (&frame, 0);
up = GST_VIDEO_FRAME_COMP_DATA (&frame, 1);
vp = GST_VIDEO_FRAME_COMP_DATA (&frame, 2);
ystride = GST_VIDEO_FRAME_COMP_STRIDE (&frame, 0);
uvstride = GST_VIDEO_FRAME_COMP_STRIDE (&frame, 1);
mtu = GST_RTP_BASE_PAYLOAD_MTU (payload);
/* amount of bytes for one pixel */
pgroup = rtpvrawpay->pgroup;
width = GST_VIDEO_INFO_WIDTH (&rtpvrawpay->vinfo);
height = GST_VIDEO_INFO_HEIGHT (&rtpvrawpay->vinfo);
interlaced = GST_VIDEO_INFO_IS_INTERLACED (&rtpvrawpay->vinfo);
format = GST_VIDEO_INFO_FORMAT (&rtpvrawpay->vinfo);
yinc = rtpvrawpay->yinc;
xinc = rtpvrawpay->xinc;
/* after how many packed lines we push out a buffer list */
lines_delay = GST_ROUND_UP_4 (height / rtpvrawpay->chunks_per_frame);
/* calculate how many buffers we expect to store in a single buffer list */
pgroups_per_packet = (mtu - (12 + 14)) / pgroup;
packets_per_packline = width / (xinc * pgroups_per_packet * 1.0);
packlines_per_list = height / (yinc * rtpvrawpay->chunks_per_frame);
buffers_per_list = packlines_per_list * packets_per_packline;
buffers_per_list = GST_ROUND_UP_8 (buffers_per_list);
use_buffer_lists = (rtpvrawpay->chunks_per_frame < (height / yinc));
fields = 1 + interlaced;
/* start with line 0, offset 0 */
for (field = 0; field < fields; field++) {
line = field;
offset = 0;
last_line = 0;
if (use_buffer_lists)
list = gst_buffer_list_new_sized (buffers_per_list);
/* write all lines */
while (line < height) {
guint left, pack_line;
GstBuffer *out;
guint8 *outdata, *headers;
gboolean next_line, complete = FALSE;
guint length, cont, pixels;
/* get the max allowed payload length size, we try to fill the complete MTU */
left = gst_rtp_buffer_calc_payload_len (mtu, 0, 0);
out = gst_rtp_buffer_new_allocate (left, 0, 0);
if (field == 0) {
GST_BUFFER_PTS (out) = GST_BUFFER_PTS (buffer);
} else {
GST_BUFFER_PTS (out) = GST_BUFFER_PTS (buffer) +
GST_BUFFER_DURATION (buffer) / 2;
}
gst_rtp_buffer_map (out, GST_MAP_WRITE, &rtp);
outdata = gst_rtp_buffer_get_payload (&rtp);
GST_LOG_OBJECT (rtpvrawpay, "created buffer of size %u for MTU %u", left,
mtu);
/*
* 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
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Extended Sequence Number | Length |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* |F| Line No |C| Offset |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Length |F| Line No |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* |C| Offset | .
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ .
* . .
* . Two (partial) lines of video data .
* . .
* +---------------------------------------------------------------+
*/
/* need 2 bytes for the extended sequence number */
*outdata++ = 0;
*outdata++ = 0;
left -= 2;
/* the headers start here */
headers = outdata;
/* make sure we can fit at least *one* header and pixel */
if (!(left > (6 + pgroup))) {
gst_rtp_buffer_unmap (&rtp);
gst_buffer_unref (out);
goto too_small;
}
/* while we can fit at least one header and one pixel */
while (left > (6 + pgroup)) {
/* we need a 6 bytes header */
left -= 6;
/* get how may bytes we need for the remaining pixels */
pixels = width - offset;
length = (pixels * pgroup) / xinc;
if (left >= length) {
/* pixels and header fit completely, we will write them and skip to the
* next line. */
next_line = TRUE;
} else {
/* line does not fit completely, see how many pixels fit */
pixels = (left / pgroup) * xinc;
length = (pixels * pgroup) / xinc;
next_line = FALSE;
}
GST_LOG_OBJECT (rtpvrawpay, "filling %u bytes in %u pixels", length,
pixels);
left -= length;
/* write length */
*outdata++ = (length >> 8) & 0xff;
*outdata++ = length & 0xff;
/* write line no */
*outdata++ = ((line >> 8) & 0x7f) | ((field << 7) & 0x80);
*outdata++ = line & 0xff;
if (next_line) {
/* go to next line we do this here to make the check below easier */
line += yinc;
}
/* calculate continuation marker */
cont = (left > (6 + pgroup) && line < height) ? 0x80 : 0x00;
/* write offset and continuation marker */
*outdata++ = ((offset >> 8) & 0x7f) | cont;
*outdata++ = offset & 0xff;
if (next_line) {
/* reset offset */
offset = 0;
GST_LOG_OBJECT (rtpvrawpay, "go to next line %u", line);
} else {
offset += pixels;
GST_LOG_OBJECT (rtpvrawpay, "next offset %u", offset);
}
if (!cont)
break;
}
GST_LOG_OBJECT (rtpvrawpay, "consumed %u bytes",
(guint) (outdata - headers));
/* second pass, read headers and write the data */
while (TRUE) {
guint offs, lin;
/* read length and cont */
length = (headers[0] << 8) | headers[1];
lin = ((headers[2] & 0x7f) << 8) | headers[3];
offs = ((headers[4] & 0x7f) << 8) | headers[5];
cont = headers[4] & 0x80;
pixels = length / pgroup;
headers += 6;
GST_LOG_OBJECT (payload,
"writing length %u, line %u, offset %u, cont %d", length, lin, offs,
cont);
switch (format) {
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGR:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_UYVY:
case GST_VIDEO_FORMAT_UYVP:
offs /= xinc;
memcpy (outdata, p0 + (lin * ystride) + (offs * pgroup), length);
outdata += length;
break;
case GST_VIDEO_FORMAT_AYUV:
{
gint i;
guint8 *datap;
datap = p0 + (lin * ystride) + (offs * 4);
for (i = 0; i < pixels; i++) {
*outdata++ = datap[2];
*outdata++ = datap[1];
*outdata++ = datap[3];
datap += 4;
}
break;
}
case GST_VIDEO_FORMAT_I420:
{
gint i;
guint uvoff;
guint8 *yd1p, *yd2p, *udp, *vdp;
yd1p = yp + (lin * ystride) + (offs);
yd2p = yd1p + ystride;
uvoff = (lin / yinc * uvstride) + (offs / xinc);
udp = up + uvoff;
vdp = vp + uvoff;
for (i = 0; i < pixels; i++) {
*outdata++ = *yd1p++;
*outdata++ = *yd1p++;
*outdata++ = *yd2p++;
*outdata++ = *yd2p++;
*outdata++ = *udp++;
*outdata++ = *vdp++;
}
break;
}
case GST_VIDEO_FORMAT_Y41B:
{
gint i;
guint uvoff;
guint8 *ydp, *udp, *vdp;
ydp = yp + (lin * ystride) + offs;
uvoff = (lin / yinc * uvstride) + (offs / xinc);
udp = up + uvoff;
vdp = vp + uvoff;
for (i = 0; i < pixels; i++) {
*outdata++ = *udp++;
*outdata++ = *ydp++;
*outdata++ = *ydp++;
*outdata++ = *vdp++;
*outdata++ = *ydp++;
*outdata++ = *ydp++;
}
break;
}
default:
gst_rtp_buffer_unmap (&rtp);
gst_buffer_unref (out);
goto unknown_sampling;
}
if (!cont)
break;
}
if (line >= height) {
GST_LOG_OBJECT (rtpvrawpay, "field/frame complete, set marker");
gst_rtp_buffer_set_marker (&rtp, TRUE);
complete = TRUE;
}
gst_rtp_buffer_unmap (&rtp);
if (left > 0) {
GST_LOG_OBJECT (rtpvrawpay, "we have %u bytes left", left);
gst_buffer_resize (out, 0, gst_buffer_get_size (out) - left);
}
/* Now either push out the buffer directly */
if (!use_buffer_lists) {
ret = gst_rtp_base_payload_push (payload, out);
continue;
}
/* or add the buffer to buffer list ... */
gst_buffer_list_add (list, out);
/* .. and check if we need to push out the list */
pack_line = (line - field) / fields;
if (complete || (pack_line > last_line && pack_line % lines_delay == 0)) {
GST_LOG_OBJECT (rtpvrawpay, "pushing list of %u buffers up to pack "
"line %u", gst_buffer_list_length (list), pack_line);
ret = gst_rtp_base_payload_push_list (payload, list);
list = NULL;
if (!complete)
list = gst_buffer_list_new_sized (buffers_per_list);
last_line = pack_line;
}
}
}
gst_video_frame_unmap (&frame);
gst_buffer_unref (buffer);
return ret;
/* ERRORS */
unknown_sampling:
{
GST_ELEMENT_ERROR (payload, STREAM, FORMAT,
(NULL), ("unimplemented sampling"));
gst_video_frame_unmap (&frame);
gst_buffer_unref (buffer);
return GST_FLOW_NOT_SUPPORTED;
}
too_small:
{
GST_ELEMENT_ERROR (payload, RESOURCE, NO_SPACE_LEFT,
(NULL), ("not enough space to send at least one pixel"));
gst_video_frame_unmap (&frame);
gst_buffer_unref (buffer);
return GST_FLOW_NOT_SUPPORTED;
}
}
