static void
gst_rtp_mp2t_pay_init (GstRTPMP2TPay * rtpmp2tpay)
{
GST_RTP_BASE_PAYLOAD (rtpmp2tpay)->clock_rate = 90000;
GST_RTP_BASE_PAYLOAD_PT (rtpmp2tpay) = GST_RTP_PAYLOAD_MP2T;
rtpmp2tpay->adapter = gst_adapter_new ();
}
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);
}
static GstFlowReturn
gst_rtp_asf_pay_handle_packet (GstRtpAsfPay * rtpasfpay, GstBuffer * buffer)
{
GstRTPBasePayload *rtppay;
GstAsfPacketInfo *packetinfo;
guint8 flags;
guint8 *data;
guint32 packet_util_size;
guint32 packet_offset;
guint32 size_left;
GstFlowReturn ret = GST_FLOW_OK;
rtppay = GST_RTP_BASE_PAYLOAD (rtpasfpay);
packetinfo = &rtpasfpay->packetinfo;
if (!gst_asf_parse_packet (buffer, packetinfo, TRUE,
rtpasfpay->asfinfo.packet_size)) {
GST_ERROR_OBJECT (rtpasfpay, "Error while parsing asf packet");
gst_buffer_unref (buffer);
return GST_FLOW_ERROR;
}
if (packetinfo->packet_size == 0)
packetinfo->packet_size = rtpasfpay->asfinfo.packet_size;
GST_LOG_OBJECT (rtpasfpay, "Packet size: %" G_GUINT32_FORMAT
", padding: %" G_GUINT32_FORMAT, packetinfo->packet_size,
packetinfo->padding);
/* update padding field to 0 */
if (packetinfo->padding > 0) {
GstAsfPacketInfo info;
/* find padding field offset */
guint offset = packetinfo->err_cor_len + 2 +
gst_asf_get_var_size_field_len (packetinfo->packet_field_type) +
gst_asf_get_var_size_field_len (packetinfo->seq_field_type);
buffer = gst_buffer_make_writable (buffer);
switch (packetinfo->padd_field_type) {
case ASF_FIELD_TYPE_DWORD:
gst_buffer_memset (buffer, offset, 0, 4);
break;
case ASF_FIELD_TYPE_WORD:
gst_buffer_memset (buffer, offset, 0, 2);
break;
case ASF_FIELD_TYPE_BYTE:
gst_buffer_memset (buffer, offset, 0, 1);
break;
case ASF_FIELD_TYPE_NONE:
default:
break;
}
gst_asf_parse_packet (buffer, &info, FALSE, 0);
}
if (packetinfo->padding != 0)
packet_util_size = rtpasfpay->asfinfo.packet_size - packetinfo->padding;
else
packet_util_size = packetinfo->packet_size;
packet_offset = 0;
while (packet_util_size > 0) {
/* Even if we don't fill completely an output buffer we
* push it when we add an fragment. Because it seems that
* it is not possible to determine where a asf packet
* fragment ends inside a rtp packet payload.
* This flag tells us to push the packet.
*/
gboolean force_push = FALSE;
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
/* we have no output buffer pending, create one */
if (rtpasfpay->current == NULL) {
GST_LOG_OBJECT (rtpasfpay, "Creating new output buffer");
rtpasfpay->current =
gst_rtp_buffer_new_allocate_len (GST_RTP_BASE_PAYLOAD_MTU (rtpasfpay),
0, 0);
rtpasfpay->cur_off = 0;
rtpasfpay->has_ts = FALSE;
rtpasfpay->marker = FALSE;
}
gst_rtp_buffer_map (rtpasfpay->current, GST_MAP_READWRITE, &rtp);
data = gst_rtp_buffer_get_payload (&rtp);
data += rtpasfpay->cur_off;
size_left = gst_rtp_buffer_get_payload_len (&rtp) - rtpasfpay->cur_off;
GST_DEBUG_OBJECT (rtpasfpay, "Input buffer bytes consumed: %"
G_GUINT32_FORMAT "/%" G_GSIZE_FORMAT, packet_offset,
gst_buffer_get_size (buffer));
GST_DEBUG_OBJECT (rtpasfpay, "Output rtpbuffer status");
GST_DEBUG_OBJECT (rtpasfpay, "Current offset: %" G_GUINT32_FORMAT,
rtpasfpay->cur_off);
GST_DEBUG_OBJECT (rtpasfpay, "Size left: %" G_GUINT32_FORMAT, size_left);
GST_DEBUG_OBJECT (rtpasfpay, "Has ts: %s",
rtpasfpay->has_ts ? "yes" : "no");
if (rtpasfpay->has_ts) {
GST_DEBUG_OBJECT (rtpasfpay, "Ts: %" G_GUINT32_FORMAT, rtpasfpay->ts);
}
flags = 0;
if (packetinfo->has_keyframe) {
flags = flags | 0x80;
}
flags = flags | 0x20; /* Relative timestamp is present */
if (!rtpasfpay->has_ts) {
/* this is the first asf packet, its send time is the
* rtp packet timestamp */
rtpasfpay->has_ts = TRUE;
rtpasfpay->ts = packetinfo->send_time;
}
if (size_left >= packet_util_size + 8) {
/* enough space for the rest of the packet */
if (packet_offset == 0) {
flags = flags | 0x40;
GST_WRITE_UINT24_BE (data + 1, packet_util_size);
} else {
GST_WRITE_UINT24_BE (data + 1, packet_offset);
force_push = TRUE;
}
data[0] = flags;
GST_WRITE_UINT32_BE (data + 4,
(gint32) (packetinfo->send_time) - (gint32) rtpasfpay->ts);
gst_buffer_extract (buffer, packet_offset, data + 8, packet_util_size);
/* updating status variables */
rtpasfpay->cur_off += 8 + packet_util_size;
size_left -= packet_util_size + 8;
packet_offset += packet_util_size;
packet_util_size = 0;
rtpasfpay->marker = TRUE;
} else {
/* fragment packet */
data[0] = flags;
GST_WRITE_UINT24_BE (data + 1, packet_offset);
GST_WRITE_UINT32_BE (data + 4,
(gint32) (packetinfo->send_time) - (gint32) rtpasfpay->ts);
gst_buffer_extract (buffer, packet_offset, data + 8, size_left - 8);
/* updating status variables */
rtpasfpay->cur_off += size_left;
packet_offset += size_left - 8;
packet_util_size -= size_left - 8;
size_left = 0;
force_push = TRUE;
}
/* there is not enough room for any more buffers */
if (force_push || size_left <= 8) {
gst_rtp_buffer_set_ssrc (&rtp, rtppay->current_ssrc);
gst_rtp_buffer_set_marker (&rtp, rtpasfpay->marker);
gst_rtp_buffer_set_payload_type (&rtp, GST_RTP_BASE_PAYLOAD_PT (rtppay));
gst_rtp_buffer_set_seq (&rtp, rtppay->seqnum + 1);
gst_rtp_buffer_set_timestamp (&rtp, packetinfo->send_time);
gst_rtp_buffer_unmap (&rtp);
/* trim remaining bytes not used */
if (size_left != 0) {
gst_buffer_set_size (rtpasfpay->current,
gst_buffer_get_size (rtpasfpay->current) - size_left);
}
GST_BUFFER_TIMESTAMP (rtpasfpay->current) = GST_BUFFER_TIMESTAMP (buffer);
rtppay->seqnum++;
rtppay->timestamp = packetinfo->send_time;
GST_DEBUG_OBJECT (rtpasfpay, "Pushing rtp buffer");
ret = gst_rtp_base_payload_push (rtppay, rtpasfpay->current);
rtpasfpay->current = NULL;
if (ret != GST_FLOW_OK) {
gst_buffer_unref (buffer);
return ret;
}
}
}
gst_buffer_unref (buffer);
return ret;
}
/**
* gst_rtp_base_payload_set_outcaps:
* @payload: a #GstRTPBasePayload
* @fieldname: the first field name or %NULL
* @...: field values
*
* Configure the output caps with the optional parameters.
*
* Variable arguments should be in the form field name, field type
* (as a GType), value(s). The last variable argument should be NULL.
*
* Returns: %TRUE if the caps could be set.
*/
gboolean
gst_rtp_base_payload_set_outcaps (GstRTPBasePayload * payload,
const gchar * fieldname, ...)
{
GstCaps *srccaps, *peercaps;
gboolean res;
/* fill in the defaults, their properties cannot be negotiated. */
srccaps = gst_caps_new_simple ("application/x-rtp",
"media", G_TYPE_STRING, payload->media,
"clock-rate", G_TYPE_INT, payload->clock_rate,
"encoding-name", G_TYPE_STRING, payload->encoding_name, NULL);
GST_DEBUG_OBJECT (payload, "defaults: %" GST_PTR_FORMAT, srccaps);
if (fieldname) {
va_list varargs;
/* override with custom properties */
va_start (varargs, fieldname);
gst_caps_set_simple_valist (srccaps, fieldname, varargs);
va_end (varargs);
GST_DEBUG_OBJECT (payload, "custom added: %" GST_PTR_FORMAT, srccaps);
}
payload->priv->caps_max_ptime = DEFAULT_MAX_PTIME;
payload->ptime = 0;
/* the peer caps can override some of the defaults */
peercaps = gst_pad_peer_query_caps (payload->srcpad, srccaps);
if (peercaps == NULL) {
/* no peer caps, just add the other properties */
gst_caps_set_simple (srccaps,
"payload", G_TYPE_INT, GST_RTP_BASE_PAYLOAD_PT (payload),
"ssrc", G_TYPE_UINT, payload->current_ssrc,
"timestamp-offset", G_TYPE_UINT, payload->ts_base,
"seqnum-offset", G_TYPE_UINT, payload->seqnum_base, NULL);
GST_DEBUG_OBJECT (payload, "no peer caps: %" GST_PTR_FORMAT, srccaps);
} else {
GstCaps *temp;
GstStructure *s, *d;
const GValue *value;
gint pt;
guint max_ptime, ptime;
/* peer provides caps we can use to fixate. They are already intersected
* with our srccaps, just make them writable */
temp = gst_caps_make_writable (peercaps);
gst_caps_unref (srccaps);
if (gst_caps_is_empty (temp)) {
gst_caps_unref (temp);
return FALSE;
}
/* now fixate, start by taking the first caps */
temp = gst_caps_truncate (temp);
/* get first structure */
s = gst_caps_get_structure (temp, 0);
if (gst_structure_get_uint (s, "maxptime", &max_ptime))
payload->priv->caps_max_ptime = max_ptime * GST_MSECOND;
if (gst_structure_get_uint (s, "ptime", &ptime))
payload->ptime = ptime * GST_MSECOND;
if (gst_structure_get_int (s, "payload", &pt)) {
/* use peer pt */
GST_RTP_BASE_PAYLOAD_PT (payload) = pt;
GST_LOG_OBJECT (payload, "using peer pt %d", pt);
} else {
if (gst_structure_has_field (s, "payload")) {
/* can only fixate if there is a field */
gst_structure_fixate_field_nearest_int (s, "payload",
GST_RTP_BASE_PAYLOAD_PT (payload));
gst_structure_get_int (s, "payload", &pt);
GST_LOG_OBJECT (payload, "using peer pt %d", pt);
} else {
/* no pt field, use the internal pt */
pt = GST_RTP_BASE_PAYLOAD_PT (payload);
gst_structure_set (s, "payload", G_TYPE_INT, pt, NULL);
GST_LOG_OBJECT (payload, "using internal pt %d", pt);
}
}
if (gst_structure_has_field_typed (s, "ssrc", G_TYPE_UINT)) {
value = gst_structure_get_value (s, "ssrc");
payload->current_ssrc = g_value_get_uint (value);
GST_LOG_OBJECT (payload, "using peer ssrc %08x", payload->current_ssrc);
} else {
/* FIXME, fixate_nearest_uint would be even better */
gst_structure_set (s, "ssrc", G_TYPE_UINT, payload->current_ssrc, NULL);
GST_LOG_OBJECT (payload, "using internal ssrc %08x",
payload->current_ssrc);
}
if (gst_structure_has_field_typed (s, "timestamp-offset", G_TYPE_UINT)) {
value = gst_structure_get_value (s, "timestamp-offset");
payload->ts_base = g_value_get_uint (value);
GST_LOG_OBJECT (payload, "using peer timestamp-offset %u",
payload->ts_base);
} else {
/* FIXME, fixate_nearest_uint would be even better */
gst_structure_set (s, "timestamp-offset", G_TYPE_UINT, payload->ts_base,
NULL);
GST_LOG_OBJECT (payload, "using internal timestamp-offset %u",
payload->ts_base);
}
if (gst_structure_has_field_typed (s, "seqnum-offset", G_TYPE_UINT)) {
value = gst_structure_get_value (s, "seqnum-offset");
payload->seqnum_base = g_value_get_uint (value);
GST_LOG_OBJECT (payload, "using peer seqnum-offset %u",
payload->seqnum_base);
} else {
/* FIXME, fixate_nearest_uint would be even better */
gst_structure_set (s, "seqnum-offset", G_TYPE_UINT, payload->seqnum_base,
NULL);
GST_LOG_OBJECT (payload, "using internal seqnum-offset %u",
payload->seqnum_base);
}
/* make the target caps by copying over all the fixed caps, removing the
* unfixed caps. */
srccaps = gst_caps_new_empty_simple (gst_structure_get_name (s));
d = gst_caps_get_structure (srccaps, 0);
gst_structure_foreach (s, (GstStructureForeachFunc) copy_fixed, d);
gst_caps_unref (temp);
GST_DEBUG_OBJECT (payload, "with peer caps: %" GST_PTR_FORMAT, srccaps);
}
update_max_ptime (payload);
res = gst_pad_set_caps (GST_RTP_BASE_PAYLOAD_SRCPAD (payload), srccaps);
gst_caps_unref (srccaps);
return res;
}
static void
gst_rtp_gsm_pay_init (GstRTPGSMPay * rtpgsmpay)
{
GST_RTP_BASE_PAYLOAD (rtpgsmpay)->clock_rate = 8000;
GST_RTP_BASE_PAYLOAD_PT (rtpgsmpay) = GST_RTP_PAYLOAD_GSM;
}