static gboolean
gst_rtp_h263p_pay_setcaps (GstBaseRTPPayload * payload, GstCaps * caps)
{
gboolean res;
GstCaps *peercaps;
gchar *encoding_name = NULL;
g_return_val_if_fail (gst_caps_is_fixed (caps), FALSE);
peercaps = gst_pad_peer_get_caps (GST_BASE_RTP_PAYLOAD_SRCPAD (payload));
if (peercaps) {
GstCaps *intersect = gst_caps_intersect (peercaps,
gst_pad_get_pad_template_caps (GST_BASE_RTP_PAYLOAD_SRCPAD (payload)));
gst_caps_unref (peercaps);
if (!gst_caps_is_empty (intersect)) {
GstStructure *s = gst_caps_get_structure (intersect, 0);
encoding_name = g_strdup (gst_structure_get_string (s, "encoding-name"));
}
gst_caps_unref (intersect);
}
if (!encoding_name)
encoding_name = g_strdup ("H263-1998");
gst_basertppayload_set_options (payload, "video", TRUE,
(gchar *) encoding_name, 90000);
res = gst_basertppayload_set_outcaps (payload, NULL);
g_free (encoding_name);
return res;
}
static GstCaps *
gst_rtp_h263p_pay_sink_getcaps (GstBaseRTPPayload * payload, GstPad * pad)
{
GstRtpH263PPay *rtph263ppay;
GstCaps *caps = NULL;
GstCaps *peercaps = NULL;
GstCaps *intersect = NULL;
guint i;
rtph263ppay = GST_RTP_H263P_PAY (payload);
peercaps = gst_pad_peer_get_caps (GST_BASE_RTP_PAYLOAD_SRCPAD (payload));
if (!peercaps)
return
gst_caps_copy (gst_pad_get_pad_template_caps
(GST_BASE_RTP_PAYLOAD_SINKPAD (payload)));
intersect = gst_caps_intersect (peercaps,
gst_pad_get_pad_template_caps (GST_BASE_RTP_PAYLOAD_SRCPAD (payload)));
gst_caps_unref (peercaps);
if (gst_caps_is_empty (intersect))
return intersect;
caps = gst_caps_new_empty ();
for (i = 0; i < gst_caps_get_size (intersect); i++) {
GstStructure *s = gst_caps_get_structure (intersect, i);
const gchar *encoding_name = gst_structure_get_string (s, "encoding-name");
if (!strcmp (encoding_name, "H263-2000")) {
const gchar *profile_str = gst_structure_get_string (s, "profile");
const gchar *level_str = gst_structure_get_string (s, "level");
int profile = 0;
int level = 0;
if (profile_str && level_str) {
gboolean i = FALSE, j = FALSE, l = FALSE, t = FALSE, f = FALSE,
v = FALSE;
GstStructure *new_s = gst_structure_new ("video/x-h263",
"variant", G_TYPE_STRING, "itu",
NULL);
profile = atoi (profile_str);
level = atoi (level_str);
/* These profiles are defined in the H.263 Annex X */
switch (profile) {
case 0:
/* The Baseline Profile (Profile 0) */
break;
case 1:
/* H.320 Coding Efficiency Version 2 Backward-Compatibility Profile
* (Profile 1)
* Baseline + Annexes I, J, L.4 and T
*/
i = j = l = t = TRUE;
break;
case 2:
/* Version 1 Backward-Compatibility Profile (Profile 2)
* Baseline + Annex F
*/
i = j = l = t = f = TRUE;
break;
case 3:
/* Version 2 Interactive and Streaming Wireless Profile
* Baseline + Annexes I, J, T
*/
i = j = t = TRUE;
break;
case 4:
/* Version 3 Interactive and Streaming Wireless Profile (Profile 4)
* Baseline + Annexes I, J, T, V, W.6.3.8,
*/
/* Missing W.6.3.8 */
i = j = t = v = TRUE;
break;
case 5:
/* Conversational High Compression Profile (Profile 5)
* Baseline + Annexes F, I, J, L.4, T, D, U
*/
/* Missing D, U */
f = i = j = l = t = TRUE;
break;
case 6:
/* Conversational Internet Profile (Profile 6)
* Baseline + Annexes F, I, J, L.4, T, D, U and
* K with arbitratry slice ordering
*/
/* Missing D, U, K with arbitratry slice ordering */
f = i = j = l = t = TRUE;
break;
case 7:
/* Conversational Interlace Profile (Profile 7)
* Baseline + Annexes F, I, J, L.4, T, D, U, W.6.3.11
*/
/* Missing D, U, W.6.3.11 */
f = i = j = l = t = TRUE;
break;
case 8:
/* High Latency Profile (Profile 8)
* Baseline + Annexes F, I, J, L.4, T, D, U, P.5, O.1.1 and
* K with arbitratry slice ordering
*/
/* Missing D, U, P.5, O.1.1 */
f = i = j = l = t = TRUE;
break;
}
if (f || i || j || t || l || v) {
GValue list = { 0 };
GValue vstr = { 0 };
g_value_init (&list, GST_TYPE_LIST);
g_value_init (&vstr, G_TYPE_STRING);
g_value_set_static_string (&vstr, "h263");
gst_value_list_append_value (&list, &vstr);
g_value_set_static_string (&vstr, "h263p");
gst_value_list_append_value (&list, &vstr);
if (l || v) {
g_value_set_static_string (&vstr, "h263pp");
gst_value_list_append_value (&list, &vstr);
}
g_value_unset (&vstr);
gst_structure_set_value (new_s, "h263version", &list);
g_value_unset (&list);
} else {
gst_structure_set (new_s, "h263version", G_TYPE_STRING, "h263", NULL);
}
if (!f)
gst_structure_set (new_s, "annex-f", G_TYPE_BOOLEAN, FALSE, NULL);
if (!i)
gst_structure_set (new_s, "annex-i", G_TYPE_BOOLEAN, FALSE, NULL);
if (!j)
gst_structure_set (new_s, "annex-j", G_TYPE_BOOLEAN, FALSE, NULL);
if (!t)
gst_structure_set (new_s, "annex-t", G_TYPE_BOOLEAN, FALSE, NULL);
if (!l)
gst_structure_set (new_s, "annex-l", G_TYPE_BOOLEAN, FALSE, NULL);
if (!v)
gst_structure_set (new_s, "annex-v", G_TYPE_BOOLEAN, FALSE, NULL);
if (level <= 10 || level == 45) {
gst_structure_set (new_s,
"width", GST_TYPE_INT_RANGE, 1, 176,
"height", GST_TYPE_INT_RANGE, 1, 144,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 30000, 2002, NULL);
gst_caps_merge_structure (caps, new_s);
} else if (level <= 20) {
GstStructure *s_copy = gst_structure_copy (new_s);
gst_structure_set (new_s,
"width", GST_TYPE_INT_RANGE, 1, 352,
"height", GST_TYPE_INT_RANGE, 1, 288,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 30000, 2002, NULL);
gst_caps_merge_structure (caps, new_s);
gst_structure_set (s_copy,
"width", GST_TYPE_INT_RANGE, 1, 176,
"height", GST_TYPE_INT_RANGE, 1, 144,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 30000, 1001, NULL);
gst_caps_merge_structure (caps, s_copy);
} else if (level <= 40) {
gst_structure_set (new_s,
"width", GST_TYPE_INT_RANGE, 1, 352,
"height", GST_TYPE_INT_RANGE, 1, 288,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 30000, 1001, NULL);
gst_caps_merge_structure (caps, new_s);
} else if (level <= 50) {
GstStructure *s_copy = gst_structure_copy (new_s);
gst_structure_set (new_s,
"width", GST_TYPE_INT_RANGE, 1, 352,
"height", GST_TYPE_INT_RANGE, 1, 288,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 50, 1, NULL);
gst_caps_merge_structure (caps, new_s);
gst_structure_set (s_copy,
"width", GST_TYPE_INT_RANGE, 1, 352,
"height", GST_TYPE_INT_RANGE, 1, 240,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 60000, 1001, NULL);
gst_caps_merge_structure (caps, s_copy);
} else if (level <= 60) {
GstStructure *s_copy = gst_structure_copy (new_s);
gst_structure_set (new_s,
"width", GST_TYPE_INT_RANGE, 1, 720,
"height", GST_TYPE_INT_RANGE, 1, 288,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 50, 1, NULL);
gst_caps_merge_structure (caps, new_s);
gst_structure_set (s_copy,
"width", GST_TYPE_INT_RANGE, 1, 720,
"height", GST_TYPE_INT_RANGE, 1, 240,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 60000, 1001, NULL);
gst_caps_merge_structure (caps, s_copy);
} else if (level <= 70) {
GstStructure *s_copy = gst_structure_copy (new_s);
gst_structure_set (new_s,
"width", GST_TYPE_INT_RANGE, 1, 720,
"height", GST_TYPE_INT_RANGE, 1, 576,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 50, 1, NULL);
gst_caps_merge_structure (caps, new_s);
gst_structure_set (s_copy,
"width", GST_TYPE_INT_RANGE, 1, 720,
"height", GST_TYPE_INT_RANGE, 1, 480,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 60000, 1001, NULL);
gst_caps_merge_structure (caps, s_copy);
} else {
gst_caps_merge_structure (caps, new_s);
}
} else {
GstStructure *new_s = gst_structure_new ("video/x-h263",
"variant", G_TYPE_STRING, "itu",
"h263version", G_TYPE_STRING, "h263",
NULL);
GST_DEBUG_OBJECT (rtph263ppay, "No profile or level specified"
" for H263-2000, defaulting to baseline H263");
gst_caps_merge_structure (caps, new_s);
}
} else {
gboolean f = FALSE, i = FALSE, j = FALSE, t = FALSE;
/* FIXME: ffmpeg support the Appendix K too, how do we express it ?
* guint k;
*/
const gchar *str;
GstStructure *new_s = gst_structure_new ("video/x-h263",
"variant", G_TYPE_STRING, "itu",
NULL);
gboolean added = FALSE;
str = gst_structure_get_string (s, "f");
if (str && !strcmp (str, "1"))
f = TRUE;
str = gst_structure_get_string (s, "i");
if (str && !strcmp (str, "1"))
i = TRUE;
str = gst_structure_get_string (s, "j");
if (str && !strcmp (str, "1"))
j = TRUE;
str = gst_structure_get_string (s, "t");
if (str && !strcmp (str, "1"))
t = TRUE;
if (f || i || j || t) {
GValue list = { 0 };
GValue vstr = { 0 };
g_value_init (&list, GST_TYPE_LIST);
g_value_init (&vstr, G_TYPE_STRING);
g_value_set_static_string (&vstr, "h263");
gst_value_list_append_value (&list, &vstr);
g_value_set_static_string (&vstr, "h263p");
gst_value_list_append_value (&list, &vstr);
g_value_unset (&vstr);
gst_structure_set_value (new_s, "h263version", &list);
g_value_unset (&list);
} else {
gst_structure_set (new_s, "h263version", G_TYPE_STRING, "h263", NULL);
}
if (!f)
gst_structure_set (new_s, "annex-f", G_TYPE_BOOLEAN, FALSE, NULL);
if (!i)
gst_structure_set (new_s, "annex-i", G_TYPE_BOOLEAN, FALSE, NULL);
if (!j)
gst_structure_set (new_s, "annex-j", G_TYPE_BOOLEAN, FALSE, NULL);
if (!t)
gst_structure_set (new_s, "annex-t", G_TYPE_BOOLEAN, FALSE, NULL);
str = gst_structure_get_string (s, "custom");
if (str) {
unsigned int xmax, ymax, mpi;
if (sscanf (str, "%u,%u,%u", &xmax, &ymax, &mpi) == 3) {
if (xmax % 4 && ymax % 4 && mpi >= 1 && mpi <= 32) {
caps_append (caps, new_s, xmax, ymax, mpi);
added = TRUE;
} else {
GST_WARNING_OBJECT (rtph263ppay, "Invalid custom framesize/MPI"
" %u x %u at %u, ignoring", xmax, ymax, mpi);
}
} else {
GST_WARNING_OBJECT (rtph263ppay, "Invalid custom framesize/MPI: %s,"
" ignoring", str);
}
}
str = gst_structure_get_string (s, "16cif");
if (str) {
int mpi = atoi (str);
caps_append (caps, new_s, 1408, 1152, mpi);
added = TRUE;
}
str = gst_structure_get_string (s, "4cif");
if (str) {
int mpi = atoi (str);
caps_append (caps, new_s, 704, 576, mpi);
added = TRUE;
}
str = gst_structure_get_string (s, "cif");
if (str) {
int mpi = atoi (str);
caps_append (caps, new_s, 352, 288, mpi);
added = TRUE;
}
str = gst_structure_get_string (s, "qcif");
if (str) {
int mpi = atoi (str);
caps_append (caps, new_s, 176, 144, mpi);
added = TRUE;
}
str = gst_structure_get_string (s, "sqcif");
if (str) {
int mpi = atoi (str);
caps_append (caps, new_s, 128, 96, mpi);
added = TRUE;
}
if (added)
gst_structure_free (new_s);
else
gst_caps_merge_structure (caps, new_s);
}
}
gst_caps_unref (intersect);
return caps;
}
static GstCaps *
gst_rtp_h264_pay_getcaps (GstBaseRTPPayload * payload, GstPad * pad)
{
GstCaps *template_caps;
GstCaps *allowed_caps;
GstCaps *caps, *icaps;
gboolean append_unrestricted;
guint i;
allowed_caps =
gst_pad_peer_get_caps_reffed (GST_BASE_RTP_PAYLOAD_SRCPAD (payload));
if (allowed_caps == NULL)
return NULL;
template_caps =
gst_static_pad_template_get_caps (&gst_rtp_h264_pay_sink_template);
if (gst_caps_is_any (allowed_caps)) {
caps = gst_caps_ref (template_caps);
goto done;
}
if (gst_caps_is_empty (allowed_caps)) {
caps = gst_caps_ref (allowed_caps);
goto done;
}
caps = gst_caps_new_empty ();
append_unrestricted = FALSE;
for (i = 0; i < gst_caps_get_size (allowed_caps); i++) {
GstStructure *s = gst_caps_get_structure (allowed_caps, i);
GstStructure *new_s = gst_structure_new ("video/x-h264", NULL);
const gchar *profile_level_id;
profile_level_id = gst_structure_get_string (s, "profile-level-id");
if (profile_level_id && strlen (profile_level_id) == 6) {
const gchar *profile;
const gchar *level;
long int spsint;
guint8 sps[3];
spsint = strtol (profile_level_id, NULL, 16);
sps[0] = spsint >> 16;
sps[1] = spsint >> 8;
sps[2] = spsint;
profile = gst_codec_utils_h264_get_profile (sps, 3);
level = gst_codec_utils_h264_get_level (sps, 3);
if (profile && level) {
GST_LOG_OBJECT (payload, "In caps, have profile %s and level %s",
profile, level);
if (!strcmp (profile, "constrained-baseline"))
gst_structure_set (new_s, "profile", G_TYPE_STRING, profile, NULL);
else {
GValue val = { 0, };
GValue profiles = { 0, };
g_value_init (&profiles, GST_TYPE_LIST);
g_value_init (&val, G_TYPE_STRING);
g_value_set_static_string (&val, profile);
gst_value_list_append_value (&profiles, &val);
g_value_set_static_string (&val, "constrained-baseline");
gst_value_list_append_value (&profiles, &val);
gst_structure_take_value (new_s, "profile", &profiles);
}
if (!strcmp (level, "1"))
gst_structure_set (new_s, "level", G_TYPE_STRING, level, NULL);
else {
GValue levels = { 0, };
GValue val = { 0, };
int j;
g_value_init (&levels, GST_TYPE_LIST);
g_value_init (&val, G_TYPE_STRING);
for (j = 0; all_levels[j]; j++) {
g_value_set_static_string (&val, all_levels[j]);
gst_value_list_prepend_value (&levels, &val);
if (!strcmp (level, all_levels[j]))
break;
}
gst_structure_take_value (new_s, "level", &levels);
}
} else {
/* Invalid profile-level-id means baseline */
gst_structure_set (new_s,
"profile", G_TYPE_STRING, "constrained-baseline", NULL);
}
} else {
/* No profile-level-id means baseline or unrestricted */
gst_structure_set (new_s,
"profile", G_TYPE_STRING, "constrained-baseline", NULL);
append_unrestricted = TRUE;
}
gst_caps_merge_structure (caps, new_s);
}
static GstFlowReturn
gst_rtp_asf_pay_handle_packet (GstRtpAsfPay * rtpasfpay, GstBuffer * buffer)
{
GstBaseRTPPayload *rtppay;
GstAsfPacketInfo *packetinfo;
guint8 flags;
guint8 *data;
guint32 packet_util_size;
guint32 packet_offset;
guint32 size_left;
GstFlowReturn ret = GST_FLOW_OK;
rtppay = GST_BASE_RTP_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_WRITE_UINT32_LE (&(GST_BUFFER_DATA (buffer)[offset]), 0);
break;
case ASF_FIELD_TYPE_WORD:
GST_WRITE_UINT16_LE (&(GST_BUFFER_DATA (buffer)[offset]), 0);
break;
case ASF_FIELD_TYPE_BYTE:
GST_BUFFER_DATA (buffer)[offset] = 0;
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;
/* 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_BASE_RTP_PAYLOAD_MTU (rtpasfpay),
0, 0);
rtpasfpay->cur_off = gst_rtp_buffer_get_header_len (rtpasfpay->current);
rtpasfpay->has_ts = FALSE;
rtpasfpay->marker = FALSE;
}
data = GST_BUFFER_DATA (rtpasfpay->current) + rtpasfpay->cur_off;
size_left = GST_BUFFER_SIZE (rtpasfpay->current) - rtpasfpay->cur_off;
GST_DEBUG_OBJECT (rtpasfpay, "Input buffer bytes consumed: %"
G_GUINT32_FORMAT "/%" G_GUINT32_FORMAT, packet_offset,
GST_BUFFER_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 (GST_BUFFER_SIZE (rtpasfpay->current) - rtpasfpay->cur_off >=
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);
memcpy (data + 8, GST_BUFFER_DATA (buffer) + packet_offset,
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);
memcpy (data + 8, GST_BUFFER_DATA (buffer) + packet_offset,
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) {
if (size_left != 0) {
/* trim remaining bytes not used */
GstBuffer *aux = gst_buffer_create_sub (rtpasfpay->current, 0,
GST_BUFFER_SIZE (rtpasfpay->current) - size_left);
gst_buffer_unref (rtpasfpay->current);
rtpasfpay->current = aux;
}
gst_rtp_buffer_set_ssrc (rtpasfpay->current, rtppay->current_ssrc);
gst_rtp_buffer_set_marker (rtpasfpay->current, rtpasfpay->marker);
gst_rtp_buffer_set_payload_type (rtpasfpay->current,
GST_BASE_RTP_PAYLOAD_PT (rtppay));
gst_rtp_buffer_set_seq (rtpasfpay->current, rtppay->seqnum + 1);
gst_rtp_buffer_set_timestamp (rtpasfpay->current, packetinfo->send_time);
GST_BUFFER_TIMESTAMP (rtpasfpay->current) = GST_BUFFER_TIMESTAMP (buffer);
gst_buffer_set_caps (rtpasfpay->current,
GST_PAD_CAPS (GST_BASE_RTP_PAYLOAD_SRCPAD (rtppay)));
rtppay->seqnum++;
rtppay->timestamp = packetinfo->send_time;
GST_DEBUG_OBJECT (rtpasfpay, "Pushing rtp buffer");
ret =
gst_pad_push (GST_BASE_RTP_PAYLOAD_SRCPAD (rtppay),
rtpasfpay->current);
rtpasfpay->current = NULL;
if (ret != GST_FLOW_OK) {
gst_buffer_unref (buffer);
return ret;
}
}
}
gst_buffer_unref (buffer);
return ret;
}
/**
* gst_basertppayload_set_outcaps:
* @payload: a #GstBaseRTPPayload
* @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_basertppayload_set_outcaps (GstBaseRTPPayload * payload, gchar * fieldname,
...)
{
GstCaps *srccaps, *peercaps;
gboolean res;
/* fill in the defaults, there 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);
}
/* the peer caps can override some of the defaults */
peercaps = gst_pad_peer_get_caps (payload->srcpad);
if (peercaps == NULL) {
/* no peer caps, just add the other properties */
gst_caps_set_simple (srccaps,
"payload", G_TYPE_INT, GST_BASE_RTP_PAYLOAD_PT (payload),
"ssrc", G_TYPE_UINT, payload->current_ssrc,
"clock-base", G_TYPE_UINT, payload->ts_base,
"seqnum-base", 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;
/* peer provides caps we can use to fixate, intersect. This always returns a
* writable caps. */
temp = gst_caps_intersect (srccaps, peercaps);
gst_caps_unref (srccaps);
gst_caps_unref (peercaps);
/* now fixate, start by taking the first caps */
gst_caps_truncate (temp);
/* get first structure */
s = gst_caps_get_structure (temp, 0);
if (gst_structure_get_int (s, "payload", &pt)) {
/* use peer pt */
GST_BASE_RTP_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_BASE_RTP_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_BASE_RTP_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, "clock-base", G_TYPE_UINT)) {
value = gst_structure_get_value (s, "clock-base");
payload->ts_base = g_value_get_uint (value);
GST_LOG_OBJECT (payload, "using peer clock-base %u", payload->ts_base);
} else {
/* FIXME, fixate_nearest_uint would be even better */
gst_structure_set (s, "clock-base", G_TYPE_UINT, payload->ts_base, NULL);
GST_LOG_OBJECT (payload, "using internal clock-base %u",
payload->ts_base);
}
if (gst_structure_has_field_typed (s, "seqnum-base", G_TYPE_UINT)) {
value = gst_structure_get_value (s, "seqnum-base");
payload->seqnum_base = g_value_get_uint (value);
GST_LOG_OBJECT (payload, "using peer seqnum-base %u",
payload->seqnum_base);
} else {
/* FIXME, fixate_nearest_uint would be even better */
gst_structure_set (s, "seqnum-base", G_TYPE_UINT, payload->seqnum_base,
NULL);
GST_LOG_OBJECT (payload, "using internal seqnum-base %u",
payload->seqnum_base);
}
/* make the target caps by copying over all the fixed caps, removing the
* unfixed caps. */
srccaps = gst_caps_new_simple (gst_structure_get_name (s), NULL);
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);
}
res = gst_pad_set_caps (GST_BASE_RTP_PAYLOAD_SRCPAD (payload), srccaps);
gst_caps_unref (srccaps);
return res;
}
