mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-16 03:18:29 +00:00
sdp: replace duplicated codes to call new base sdp apis
https://bugzilla.gnome.org/show_bug.cgi?id=745880
This commit is contained in:
Hyunjun Ko
Sebastian Dröge
parent
662d6b188f
commit
924f914172
|
|
@ -3206,490 +3206,6 @@ no_setup_sdp:
|
|||
}
|
||||
}
|
||||
|
||||
static const gchar *
|
||||
rtsp_get_attribute_for_pt (const GstSDPMedia * media, const gchar * name,
|
||||
gint pt)
|
||||
{
|
||||
guint i;
|
||||
|
||||
for (i = 0;; i++) {
|
||||
const gchar *attr;
|
||||
gint val;
|
||||
|
||||
if ((attr = gst_sdp_media_get_attribute_val_n (media, name, i)) == NULL)
|
||||
break;
|
||||
|
||||
if (sscanf (attr, "%d ", &val) != 1)
|
||||
continue;
|
||||
|
||||
if (val == pt)
|
||||
return attr;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
#define PARSE_INT(p, del, res) \
|
||||
G_STMT_START { \
|
||||
gchar *t = p; \
|
||||
p = strstr (p, del); \
|
||||
if (p == NULL) \
|
||||
res = -1; \
|
||||
else { \
|
||||
*p = '\0'; \
|
||||
p++; \
|
||||
res = atoi (t); \
|
||||
} \
|
||||
} G_STMT_END
|
||||
|
||||
#define PARSE_STRING(p, del, res) \
|
||||
G_STMT_START { \
|
||||
gchar *t = p; \
|
||||
p = strstr (p, del); \
|
||||
if (p == NULL) { \
|
||||
res = NULL; \
|
||||
p = t; \
|
||||
} \
|
||||
else { \
|
||||
*p = '\0'; \
|
||||
p++; \
|
||||
res = t; \
|
||||
} \
|
||||
} G_STMT_END
|
||||
|
||||
#define SKIP_SPACES(p) \
|
||||
while (*p && g_ascii_isspace (*p)) \
|
||||
p++;
|
||||
|
||||
/* rtpmap contains:
|
||||
*
|
||||
* <payload> <encoding_name>/<clock_rate>[/<encoding_params>]
|
||||
*/
|
||||
static gboolean
|
||||
parse_rtpmap (const gchar * rtpmap, gint * payload, gchar ** name,
|
||||
gint * rate, gchar ** params)
|
||||
{
|
||||
gchar *p, *t;
|
||||
|
||||
p = (gchar *) rtpmap;
|
||||
|
||||
PARSE_INT (p, " ", *payload);
|
||||
if (*payload == -1)
|
||||
return FALSE;
|
||||
|
||||
SKIP_SPACES (p);
|
||||
if (*p == '\0')
|
||||
return FALSE;
|
||||
|
||||
PARSE_STRING (p, "/", *name);
|
||||
if (*name == NULL) {
|
||||
GST_DEBUG ("no rate, name %s", p);
|
||||
/* no rate, assume -1 then, this is not supposed to happen but RealMedia
|
||||
* streams seem to omit the rate. */
|
||||
*name = p;
|
||||
*rate = -1;
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
t = p;
|
||||
p = strstr (p, "/");
|
||||
if (p == NULL) {
|
||||
*rate = atoi (t);
|
||||
return TRUE;
|
||||
}
|
||||
*p = '\0';
|
||||
p++;
|
||||
*rate = atoi (t);
|
||||
|
||||
t = p;
|
||||
if (*p == '\0')
|
||||
return TRUE;
|
||||
*params = t;
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/*
|
||||
* Mapping of caps to and from SDP fields:
|
||||
*
|
||||
* a=rtpmap:<payload> <encoding_name>/<clock_rate>[/<encoding_params>]
|
||||
* a=framesize:<payload> <width>-<height>
|
||||
* a=fmtp:<payload> <param>[=<value>];...
|
||||
*/
|
||||
static GstCaps *
|
||||
media_to_caps (gint pt, const GstSDPMedia * media)
|
||||
{
|
||||
GstCaps *caps;
|
||||
const gchar *rtpmap;
|
||||
const gchar *fmtp;
|
||||
const gchar *framesize;
|
||||
gchar *name = NULL;
|
||||
gint rate = -1;
|
||||
gchar *params = NULL;
|
||||
gchar *tmp;
|
||||
GstStructure *s;
|
||||
gint payload = 0;
|
||||
gboolean ret;
|
||||
|
||||
/* get and parse rtpmap */
|
||||
rtpmap = rtsp_get_attribute_for_pt (media, "rtpmap", pt);
|
||||
|
||||
if (rtpmap) {
|
||||
ret = parse_rtpmap (rtpmap, &payload, &name, &rate, ¶ms);
|
||||
if (!ret) {
|
||||
g_warning ("error parsing rtpmap, ignoring");
|
||||
rtpmap = NULL;
|
||||
}
|
||||
}
|
||||
/* dynamic payloads need rtpmap or we fail */
|
||||
if (rtpmap == NULL && pt >= 96)
|
||||
goto no_rtpmap;
|
||||
|
||||
/* check if we have a rate, if not, we need to look up the rate from the
|
||||
* default rates based on the payload types. */
|
||||
if (rate == -1) {
|
||||
const GstRTPPayloadInfo *info;
|
||||
|
||||
if (GST_RTP_PAYLOAD_IS_DYNAMIC (pt)) {
|
||||
/* dynamic types, use media and encoding_name */
|
||||
tmp = g_ascii_strdown (media->media, -1);
|
||||
info = gst_rtp_payload_info_for_name (tmp, name);
|
||||
g_free (tmp);
|
||||
} else {
|
||||
/* static types, use payload type */
|
||||
info = gst_rtp_payload_info_for_pt (pt);
|
||||
}
|
||||
|
||||
if (info) {
|
||||
if ((rate = info->clock_rate) == 0)
|
||||
rate = -1;
|
||||
}
|
||||
/* we fail if we cannot find one */
|
||||
if (rate == -1)
|
||||
goto no_rate;
|
||||
}
|
||||
|
||||
tmp = g_ascii_strdown (media->media, -1);
|
||||
caps = gst_caps_new_simple ("application/x-unknown",
|
||||
"media", G_TYPE_STRING, tmp, "payload", G_TYPE_INT, pt, NULL);
|
||||
g_free (tmp);
|
||||
s = gst_caps_get_structure (caps, 0);
|
||||
|
||||
gst_structure_set (s, "clock-rate", G_TYPE_INT, rate, NULL);
|
||||
|
||||
/* encoding name must be upper case */
|
||||
if (name != NULL) {
|
||||
tmp = g_ascii_strup (name, -1);
|
||||
gst_structure_set (s, "encoding-name", G_TYPE_STRING, tmp, NULL);
|
||||
g_free (tmp);
|
||||
}
|
||||
|
||||
/* params must be lower case */
|
||||
if (params != NULL) {
|
||||
tmp = g_ascii_strdown (params, -1);
|
||||
gst_structure_set (s, "encoding-params", G_TYPE_STRING, tmp, NULL);
|
||||
g_free (tmp);
|
||||
}
|
||||
|
||||
/* parse optional fmtp: field */
|
||||
if ((fmtp = rtsp_get_attribute_for_pt (media, "fmtp", pt))) {
|
||||
gchar *p;
|
||||
gint payload = 0;
|
||||
|
||||
p = (gchar *) fmtp;
|
||||
|
||||
/* p is now of the format <payload> <param>[=<value>];... */
|
||||
PARSE_INT (p, " ", payload);
|
||||
if (payload != -1 && payload == pt) {
|
||||
gchar **pairs;
|
||||
gint i;
|
||||
|
||||
/* <param>[=<value>] are separated with ';' */
|
||||
pairs = g_strsplit (p, ";", 0);
|
||||
for (i = 0; pairs[i]; i++) {
|
||||
gchar *valpos;
|
||||
const gchar *val, *key;
|
||||
gint j;
|
||||
const gchar *reserved_keys[] =
|
||||
{ "media", "payload", "clock-rate", "encoding-name",
|
||||
"encoding-params"
|
||||
};
|
||||
|
||||
/* the key may not have a '=', the value can have other '='s */
|
||||
valpos = strstr (pairs[i], "=");
|
||||
if (valpos) {
|
||||
/* we have a '=' and thus a value, remove the '=' with \0 */
|
||||
*valpos = '\0';
|
||||
/* value is everything between '=' and ';'. We split the pairs at ;
|
||||
* boundaries so we can take the remainder of the value. Some servers
|
||||
* put spaces around the value which we strip off here. Alternatively
|
||||
* we could strip those spaces in the depayloaders should these spaces
|
||||
* actually carry any meaning in the future. */
|
||||
val = g_strstrip (valpos + 1);
|
||||
} else {
|
||||
/* simple <param>;.. is translated into <param>=1;... */
|
||||
val = "1";
|
||||
}
|
||||
/* strip the key of spaces, convert key to lowercase but not the value. */
|
||||
key = g_strstrip (pairs[i]);
|
||||
|
||||
/* skip keys from the fmtp, which we already use ourselves for the
|
||||
* caps. Some software is adding random things like clock-rate into
|
||||
* the fmtp, and we would otherwise here set a string-typed clock-rate
|
||||
* in the caps... and thus fail to create valid RTP caps
|
||||
*/
|
||||
for (j = 0; j < G_N_ELEMENTS (reserved_keys); j++) {
|
||||
if (g_ascii_strcasecmp (reserved_keys[j], key) == 0) {
|
||||
key = "";
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (strlen (key) > 1) {
|
||||
tmp = g_ascii_strdown (key, -1);
|
||||
gst_structure_set (s, tmp, G_TYPE_STRING, val, NULL);
|
||||
g_free (tmp);
|
||||
}
|
||||
}
|
||||
g_strfreev (pairs);
|
||||
}
|
||||
}
|
||||
|
||||
/* parse framesize: field */
|
||||
if ((framesize = gst_sdp_media_get_attribute_val (media, "framesize"))) {
|
||||
gchar *p;
|
||||
|
||||
/* p is now of the format <payload> <width>-<height> */
|
||||
p = (gchar *) framesize;
|
||||
|
||||
PARSE_INT (p, " ", payload);
|
||||
if (payload != -1 && payload == pt) {
|
||||
gst_structure_set (s, "a-framesize", G_TYPE_STRING, p, NULL);
|
||||
}
|
||||
}
|
||||
return caps;
|
||||
|
||||
/* ERRORS */
|
||||
no_rtpmap:
|
||||
{
|
||||
g_warning ("rtpmap type not given for dynamic payload %d", pt);
|
||||
return NULL;
|
||||
}
|
||||
no_rate:
|
||||
{
|
||||
g_warning ("rate unknown for payload type %d", pt);
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
static gboolean
|
||||
parse_keymgmt (const gchar * keymgmt, GstCaps * caps)
|
||||
{
|
||||
gboolean res = FALSE;
|
||||
gsize size;
|
||||
guchar *data;
|
||||
GstMIKEYMessage *msg;
|
||||
const GstMIKEYPayload *payload;
|
||||
const gchar *srtp_cipher;
|
||||
const gchar *srtp_auth;
|
||||
|
||||
{
|
||||
gchar *orig_value;
|
||||
gchar *p, *kmpid;
|
||||
|
||||
p = orig_value = g_strdup (keymgmt);
|
||||
|
||||
SKIP_SPACES (p);
|
||||
if (*p == '\0') {
|
||||
g_free (orig_value);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
PARSE_STRING (p, " ", kmpid);
|
||||
if (kmpid == NULL || !g_str_equal (kmpid, "mikey")) {
|
||||
g_free (orig_value);
|
||||
return FALSE;
|
||||
}
|
||||
data = g_base64_decode (p, &size);
|
||||
|
||||
g_free (orig_value); /* Don't need this any more */
|
||||
}
|
||||
|
||||
if (data == NULL)
|
||||
return FALSE;
|
||||
|
||||
msg = gst_mikey_message_new_from_data (data, size, NULL, NULL);
|
||||
g_free (data);
|
||||
if (msg == NULL)
|
||||
return FALSE;
|
||||
|
||||
srtp_cipher = "aes-128-icm";
|
||||
srtp_auth = "hmac-sha1-80";
|
||||
|
||||
/* check the Security policy if any */
|
||||
if ((payload = gst_mikey_message_find_payload (msg, GST_MIKEY_PT_SP, 0))) {
|
||||
GstMIKEYPayloadSP *p = (GstMIKEYPayloadSP *) payload;
|
||||
guint len, i;
|
||||
|
||||
if (p->proto != GST_MIKEY_SEC_PROTO_SRTP)
|
||||
goto done;
|
||||
|
||||
len = gst_mikey_payload_sp_get_n_params (payload);
|
||||
for (i = 0; i < len; i++) {
|
||||
const GstMIKEYPayloadSPParam *param =
|
||||
gst_mikey_payload_sp_get_param (payload, i);
|
||||
|
||||
switch (param->type) {
|
||||
case GST_MIKEY_SP_SRTP_ENC_ALG:
|
||||
switch (param->val[0]) {
|
||||
case 0:
|
||||
srtp_cipher = "null";
|
||||
break;
|
||||
case 2:
|
||||
case 1:
|
||||
srtp_cipher = "aes-128-icm";
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case GST_MIKEY_SP_SRTP_ENC_KEY_LEN:
|
||||
switch (param->val[0]) {
|
||||
case AES_128_KEY_LEN:
|
||||
srtp_cipher = "aes-128-icm";
|
||||
break;
|
||||
case AES_256_KEY_LEN:
|
||||
srtp_cipher = "aes-256-icm";
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case GST_MIKEY_SP_SRTP_AUTH_ALG:
|
||||
switch (param->val[0]) {
|
||||
case 0:
|
||||
srtp_auth = "null";
|
||||
break;
|
||||
case 2:
|
||||
case 1:
|
||||
srtp_auth = "hmac-sha1-80";
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case GST_MIKEY_SP_SRTP_AUTH_KEY_LEN:
|
||||
switch (param->val[0]) {
|
||||
case HMAC_32_KEY_LEN:
|
||||
srtp_auth = "hmac-sha1-32";
|
||||
break;
|
||||
case HMAC_80_KEY_LEN:
|
||||
srtp_auth = "hmac-sha1-80";
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case GST_MIKEY_SP_SRTP_SRTP_ENC:
|
||||
break;
|
||||
case GST_MIKEY_SP_SRTP_SRTCP_ENC:
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!(payload = gst_mikey_message_find_payload (msg, GST_MIKEY_PT_KEMAC, 0)))
|
||||
goto done;
|
||||
else {
|
||||
GstMIKEYPayloadKEMAC *p = (GstMIKEYPayloadKEMAC *) payload;
|
||||
const GstMIKEYPayload *sub;
|
||||
GstMIKEYPayloadKeyData *pkd;
|
||||
GstBuffer *buf;
|
||||
|
||||
if (p->enc_alg != GST_MIKEY_ENC_NULL || p->mac_alg != GST_MIKEY_MAC_NULL)
|
||||
goto done;
|
||||
|
||||
if (!(sub = gst_mikey_payload_kemac_get_sub (payload, 0)))
|
||||
goto done;
|
||||
|
||||
if (sub->type != GST_MIKEY_PT_KEY_DATA)
|
||||
goto done;
|
||||
|
||||
pkd = (GstMIKEYPayloadKeyData *) sub;
|
||||
buf =
|
||||
gst_buffer_new_wrapped (g_memdup (pkd->key_data, pkd->key_len),
|
||||
pkd->key_len);
|
||||
gst_caps_set_simple (caps, "srtp-key", GST_TYPE_BUFFER, buf, NULL);
|
||||
}
|
||||
|
||||
gst_caps_set_simple (caps,
|
||||
"srtp-cipher", G_TYPE_STRING, srtp_cipher,
|
||||
"srtp-auth", G_TYPE_STRING, srtp_auth,
|
||||
"srtcp-cipher", G_TYPE_STRING, srtp_cipher,
|
||||
"srtcp-auth", G_TYPE_STRING, srtp_auth, NULL);
|
||||
|
||||
res = TRUE;
|
||||
done:
|
||||
gst_mikey_message_unref (msg);
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
/*
|
||||
* Mapping SDP attributes to caps
|
||||
*
|
||||
* prepend 'a-' to IANA registered sdp attributes names
|
||||
* (ie: not prefixed with 'x-') in order to avoid
|
||||
* collision with gstreamer standard caps properties names
|
||||
*/
|
||||
static void
|
||||
sdp_attributes_to_caps (GArray * attributes, GstCaps * caps)
|
||||
{
|
||||
if (attributes->len > 0) {
|
||||
GstStructure *s;
|
||||
guint i;
|
||||
|
||||
s = gst_caps_get_structure (caps, 0);
|
||||
|
||||
for (i = 0; i < attributes->len; i++) {
|
||||
GstSDPAttribute *attr = &g_array_index (attributes, GstSDPAttribute, i);
|
||||
gchar *tofree, *key;
|
||||
|
||||
key = attr->key;
|
||||
|
||||
/* skip some of the attribute we already handle */
|
||||
if (!strcmp (key, "fmtp"))
|
||||
continue;
|
||||
if (!strcmp (key, "rtpmap"))
|
||||
continue;
|
||||
if (!strcmp (key, "control"))
|
||||
continue;
|
||||
if (!strcmp (key, "range"))
|
||||
continue;
|
||||
if (!strcmp (key, "framesize"))
|
||||
continue;
|
||||
if (g_str_equal (key, "key-mgmt")) {
|
||||
parse_keymgmt (attr->value, caps);
|
||||
continue;
|
||||
}
|
||||
|
||||
/* string must be valid UTF8 */
|
||||
if (!g_utf8_validate (attr->value, -1, NULL))
|
||||
continue;
|
||||
|
||||
if (!g_str_has_prefix (key, "x-"))
|
||||
tofree = key = g_strdup_printf ("a-%s", key);
|
||||
else
|
||||
tofree = NULL;
|
||||
|
||||
GST_DEBUG ("adding caps: %s=%s", key, attr->value);
|
||||
gst_structure_set (s, key, G_TYPE_STRING, attr->value, NULL);
|
||||
g_free (tofree);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static gboolean
|
||||
default_handle_sdp (GstRTSPMedia * media, GstSDPMessage * sdp)
|
||||
{
|
||||
|
|
@ -3756,7 +3272,7 @@ default_handle_sdp (GstRTSPMedia * media, GstSDPMessage * sdp)
|
|||
GST_DEBUG (" looking at %d pt: %d", j, pt);
|
||||
|
||||
/* convert caps */
|
||||
caps = media_to_caps (pt, sdp_media);
|
||||
caps = gst_sdp_media_get_caps_from_media (sdp_media, pt);
|
||||
if (caps == NULL) {
|
||||
GST_WARNING (" skipping pt %d without caps", pt);
|
||||
continue;
|
||||
|
|
@ -3764,9 +3280,9 @@ default_handle_sdp (GstRTSPMedia * media, GstSDPMessage * sdp)
|
|||
|
||||
/* do some tweaks */
|
||||
GST_DEBUG ("mapping sdp session level attributes to caps");
|
||||
sdp_attributes_to_caps (sdp->attributes, caps);
|
||||
gst_sdp_message_attributes_to_caps (sdp, caps);
|
||||
GST_DEBUG ("mapping sdp media level attributes to caps");
|
||||
sdp_attributes_to_caps (sdp_media->attributes, caps);
|
||||
gst_sdp_media_attributes_to_caps (sdp_media, caps);
|
||||
|
||||
s = gst_caps_get_structure (caps, 0);
|
||||
gst_structure_set_name (s, media_type);
|
||||
|
|
|
|||
|
|
@ -30,12 +30,6 @@
|
|||
|
||||
#include "rtsp-sdp.h"
|
||||
|
||||
#define AES_128_KEY_LEN 16
|
||||
#define AES_256_KEY_LEN 32
|
||||
|
||||
#define HMAC_32_KEY_LEN 4
|
||||
#define HMAC_80_KEY_LEN 10
|
||||
|
||||
static gboolean
|
||||
get_info_from_tags (GstPad * pad, GstEvent ** event, gpointer user_data)
|
||||
{
|
||||
|
|
@ -78,60 +72,27 @@ update_sdp_from_tags (GstRTSPStream * stream, GstSDPMedia * stream_media)
|
|||
gst_object_unref (src_pad);
|
||||
}
|
||||
|
||||
static guint8
|
||||
enc_key_length_from_cipher_name (const gchar * cipher)
|
||||
{
|
||||
if (g_strcmp0 (cipher, "aes-128-icm") == 0)
|
||||
return AES_128_KEY_LEN;
|
||||
else if (g_strcmp0 (cipher, "aes-256-icm") == 0)
|
||||
return AES_256_KEY_LEN;
|
||||
else {
|
||||
GST_ERROR ("encryption algorithm '%s' not supported", cipher);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
static guint8
|
||||
auth_key_length_from_auth_name (const gchar * auth)
|
||||
{
|
||||
if (g_strcmp0 (auth, "hmac-sha1-32") == 0)
|
||||
return HMAC_32_KEY_LEN;
|
||||
else if (g_strcmp0 (auth, "hmac-sha1-80") == 0)
|
||||
return HMAC_80_KEY_LEN;
|
||||
else {
|
||||
GST_ERROR ("authentication algorithm '%s' not supported", auth);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
make_media (GstSDPMessage * sdp, GstSDPInfo * info, GstRTSPMedia * media,
|
||||
GstRTSPStream * stream, GstStructure * s, GstRTSPProfile profile)
|
||||
GstRTSPStream * stream, GstCaps * caps, GstRTSPProfile profile)
|
||||
{
|
||||
GstSDPMedia *smedia;
|
||||
const gchar *caps_str, *caps_enc, *caps_params;
|
||||
gchar *tmp;
|
||||
gint caps_pt, caps_rate;
|
||||
guint n_fields, j;
|
||||
gboolean first;
|
||||
GString *fmtp;
|
||||
GstRTSPLowerTrans ltrans;
|
||||
GSocketFamily family;
|
||||
const gchar *addrtype, *proto;
|
||||
gchar *address;
|
||||
guint ttl;
|
||||
GstClockTime rtx_time;
|
||||
gchar *base64;
|
||||
guint32 ssrc;
|
||||
GstMIKEYMessage *mikey_msg;
|
||||
|
||||
gst_sdp_media_new (&smedia);
|
||||
|
||||
/* get media type and payload for the m= line */
|
||||
caps_str = gst_structure_get_string (s, "media");
|
||||
gst_sdp_media_set_media (smedia, caps_str);
|
||||
|
||||
gst_structure_get_int (s, "payload", &caps_pt);
|
||||
tmp = g_strdup_printf ("%d", caps_pt);
|
||||
gst_sdp_media_add_format (smedia, tmp);
|
||||
g_free (tmp);
|
||||
if (gst_sdp_media_set_media_from_caps (caps, smedia) != GST_SDP_OK) {
|
||||
goto error;
|
||||
}
|
||||
|
||||
gst_sdp_media_set_port_info (smedia, 0, 1);
|
||||
|
||||
|
|
@ -185,201 +146,27 @@ make_media (GstSDPMessage * sdp, GstSDPInfo * info, GstRTSPMedia * media,
|
|||
gst_sdp_media_add_connection (smedia, "IN", addrtype, address, ttl, 1);
|
||||
g_free (address);
|
||||
|
||||
/* get clock-rate, media type and params for the rtpmap attribute */
|
||||
gst_structure_get_int (s, "clock-rate", &caps_rate);
|
||||
caps_enc = gst_structure_get_string (s, "encoding-name");
|
||||
caps_params = gst_structure_get_string (s, "encoding-params");
|
||||
|
||||
if (caps_enc) {
|
||||
if (caps_params)
|
||||
tmp = g_strdup_printf ("%d %s/%d/%s", caps_pt, caps_enc, caps_rate,
|
||||
caps_params);
|
||||
else
|
||||
tmp = g_strdup_printf ("%d %s/%d", caps_pt, caps_enc, caps_rate);
|
||||
|
||||
gst_sdp_media_add_attribute (smedia, "rtpmap", tmp);
|
||||
g_free (tmp);
|
||||
}
|
||||
|
||||
/* the config uri */
|
||||
tmp = gst_rtsp_stream_get_control (stream);
|
||||
gst_sdp_media_add_attribute (smedia, "control", tmp);
|
||||
g_free (tmp);
|
||||
|
||||
|
||||
/* check for srtp */
|
||||
do {
|
||||
GstBuffer *srtpkey;
|
||||
const GValue *val;
|
||||
const gchar *srtpcipher, *srtpauth, *srtcpcipher, *srtcpauth;
|
||||
GstMIKEYMessage *msg;
|
||||
GstMIKEYPayload *payload, *pkd;
|
||||
GBytes *bytes;
|
||||
GstMapInfo info;
|
||||
const guint8 *data;
|
||||
gsize size;
|
||||
gchar *base64;
|
||||
guint8 byte;
|
||||
guint32 ssrc;
|
||||
|
||||
val = gst_structure_get_value (s, "srtp-key");
|
||||
if (val == NULL)
|
||||
break;
|
||||
|
||||
srtpkey = gst_value_get_buffer (val);
|
||||
if (srtpkey == NULL)
|
||||
break;
|
||||
|
||||
srtpcipher = gst_structure_get_string (s, "srtp-cipher");
|
||||
srtpauth = gst_structure_get_string (s, "srtp-auth");
|
||||
srtcpcipher = gst_structure_get_string (s, "srtcp-cipher");
|
||||
srtcpauth = gst_structure_get_string (s, "srtcp-auth");
|
||||
|
||||
if (srtpcipher == NULL || srtpauth == NULL || srtcpcipher == NULL ||
|
||||
srtcpauth == NULL)
|
||||
break;
|
||||
|
||||
msg = gst_mikey_message_new ();
|
||||
/* unencrypted MIKEY message, we send this over TLS so this is allowed */
|
||||
gst_mikey_message_set_info (msg, GST_MIKEY_VERSION, GST_MIKEY_TYPE_PSK_INIT,
|
||||
FALSE, GST_MIKEY_PRF_MIKEY_1, 0, GST_MIKEY_MAP_TYPE_SRTP);
|
||||
/* add policy '0' for our SSRC */
|
||||
mikey_msg = gst_mikey_message_new_from_caps (caps);
|
||||
if (mikey_msg) {
|
||||
gst_rtsp_stream_get_ssrc (stream, &ssrc);
|
||||
gst_mikey_message_add_cs_srtp (msg, 0, ssrc, 0);
|
||||
/* timestamp is now */
|
||||
gst_mikey_message_add_t_now_ntp_utc (msg);
|
||||
/* add some random data */
|
||||
gst_mikey_message_add_rand_len (msg, 16);
|
||||
/* add policy '0' for our SSRC */
|
||||
gst_mikey_message_add_cs_srtp (mikey_msg, 0, ssrc, 0);
|
||||
|
||||
/* the policy '0' is SRTP with the above discovered algorithms */
|
||||
payload = gst_mikey_payload_new (GST_MIKEY_PT_SP);
|
||||
gst_mikey_payload_sp_set (payload, 0, GST_MIKEY_SEC_PROTO_SRTP);
|
||||
|
||||
/* only AES-CM is supported */
|
||||
byte = 1;
|
||||
gst_mikey_payload_sp_add_param (payload, GST_MIKEY_SP_SRTP_ENC_ALG, 1,
|
||||
&byte);
|
||||
/* Encryption key length */
|
||||
byte = enc_key_length_from_cipher_name (srtpcipher);
|
||||
gst_mikey_payload_sp_add_param (payload, GST_MIKEY_SP_SRTP_ENC_KEY_LEN, 1,
|
||||
&byte);
|
||||
/* only HMAC-SHA1 */
|
||||
gst_mikey_payload_sp_add_param (payload, GST_MIKEY_SP_SRTP_AUTH_ALG, 1,
|
||||
&byte);
|
||||
/* Authentication key length */
|
||||
byte = auth_key_length_from_auth_name (srtpauth);
|
||||
gst_mikey_payload_sp_add_param (payload, GST_MIKEY_SP_SRTP_AUTH_KEY_LEN, 1,
|
||||
&byte);
|
||||
/* we enable encryption on RTP and RTCP */
|
||||
gst_mikey_payload_sp_add_param (payload, GST_MIKEY_SP_SRTP_SRTP_ENC, 1,
|
||||
&byte);
|
||||
gst_mikey_payload_sp_add_param (payload, GST_MIKEY_SP_SRTP_SRTCP_ENC, 1,
|
||||
&byte);
|
||||
/* we enable authentication on RTP and RTCP */
|
||||
gst_mikey_payload_sp_add_param (payload, GST_MIKEY_SP_SRTP_SRTP_AUTH, 1,
|
||||
&byte);
|
||||
gst_mikey_message_add_payload (msg, payload);
|
||||
|
||||
/* make unencrypted KEMAC */
|
||||
payload = gst_mikey_payload_new (GST_MIKEY_PT_KEMAC);
|
||||
gst_mikey_payload_kemac_set (payload, GST_MIKEY_ENC_NULL,
|
||||
GST_MIKEY_MAC_NULL);
|
||||
|
||||
/* add the key in key data */
|
||||
pkd = gst_mikey_payload_new (GST_MIKEY_PT_KEY_DATA);
|
||||
gst_buffer_map (srtpkey, &info, GST_MAP_READ);
|
||||
gst_mikey_payload_key_data_set_key (pkd, GST_MIKEY_KD_TEK, info.size,
|
||||
info.data);
|
||||
gst_buffer_unmap (srtpkey, &info);
|
||||
/* add key data to KEMAC */
|
||||
gst_mikey_payload_kemac_add_sub (payload, pkd);
|
||||
gst_mikey_message_add_payload (msg, payload);
|
||||
|
||||
/* now serialize this to bytes */
|
||||
bytes = gst_mikey_message_to_bytes (msg, NULL, NULL);
|
||||
gst_mikey_message_unref (msg);
|
||||
/* and make it into base64 */
|
||||
data = g_bytes_get_data (bytes, &size);
|
||||
base64 = g_base64_encode (data, size);
|
||||
g_bytes_unref (bytes);
|
||||
|
||||
tmp = g_strdup_printf ("mikey %s", base64);
|
||||
g_free (base64);
|
||||
|
||||
gst_sdp_media_add_attribute (smedia, "key-mgmt", tmp);
|
||||
g_free (tmp);
|
||||
} while (FALSE);
|
||||
|
||||
/* collect all other properties and add them to fmtp or attributes */
|
||||
fmtp = g_string_new ("");
|
||||
g_string_append_printf (fmtp, "%d ", caps_pt);
|
||||
first = TRUE;
|
||||
n_fields = gst_structure_n_fields (s);
|
||||
for (j = 0; j < n_fields; j++) {
|
||||
const gchar *fname, *fval;
|
||||
|
||||
fname = gst_structure_nth_field_name (s, j);
|
||||
|
||||
/* filter out standard properties */
|
||||
if (!strcmp (fname, "media"))
|
||||
continue;
|
||||
if (!strcmp (fname, "payload"))
|
||||
continue;
|
||||
if (!strcmp (fname, "clock-rate"))
|
||||
continue;
|
||||
if (!strcmp (fname, "encoding-name"))
|
||||
continue;
|
||||
if (!strcmp (fname, "encoding-params"))
|
||||
continue;
|
||||
if (!strcmp (fname, "ssrc"))
|
||||
continue;
|
||||
if (!strcmp (fname, "timestamp-offset"))
|
||||
continue;
|
||||
if (!strcmp (fname, "seqnum-offset"))
|
||||
continue;
|
||||
if (g_str_has_prefix (fname, "srtp-"))
|
||||
continue;
|
||||
if (g_str_has_prefix (fname, "srtcp-"))
|
||||
continue;
|
||||
/* handled later */
|
||||
if (g_str_has_prefix (fname, "x-gst-rtsp-server-rtx-time"))
|
||||
continue;
|
||||
|
||||
if (!strcmp (fname, "a-framesize")) {
|
||||
/* a-framesize attribute */
|
||||
if ((fval = gst_structure_get_string (s, fname))) {
|
||||
tmp = g_strdup_printf ("%d %s", caps_pt, fval);
|
||||
gst_sdp_media_add_attribute (smedia, fname + 2, tmp);
|
||||
g_free (tmp);
|
||||
}
|
||||
continue;
|
||||
base64 = gst_mikey_message_base64_encode (mikey_msg);
|
||||
if (base64) {
|
||||
tmp = g_strdup_printf ("mikey %s", base64);
|
||||
g_free (base64);
|
||||
gst_sdp_media_add_attribute (smedia, "key-mgmt", tmp);
|
||||
g_free (tmp);
|
||||
}
|
||||
|
||||
if (g_str_has_prefix (fname, "a-")) {
|
||||
/* attribute */
|
||||
if ((fval = gst_structure_get_string (s, fname)))
|
||||
gst_sdp_media_add_attribute (smedia, fname + 2, fval);
|
||||
continue;
|
||||
}
|
||||
if (g_str_has_prefix (fname, "x-")) {
|
||||
/* attribute */
|
||||
if ((fval = gst_structure_get_string (s, fname)))
|
||||
gst_sdp_media_add_attribute (smedia, fname, fval);
|
||||
continue;
|
||||
}
|
||||
|
||||
if ((fval = gst_structure_get_string (s, fname))) {
|
||||
g_string_append_printf (fmtp, "%s%s=%s", first ? "" : ";", fname, fval);
|
||||
first = FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
if (!first) {
|
||||
tmp = g_string_free (fmtp, FALSE);
|
||||
gst_sdp_media_add_attribute (smedia, "fmtp", tmp);
|
||||
g_free (tmp);
|
||||
} else {
|
||||
g_string_free (fmtp, TRUE);
|
||||
gst_mikey_message_unref (mikey_msg);
|
||||
}
|
||||
|
||||
update_sdp_from_tags (stream, smedia);
|
||||
|
|
@ -394,6 +181,16 @@ make_media (GstSDPMessage * sdp, GstSDPInfo * info, GstRTSPMedia * media,
|
|||
"Not adding retransmission");
|
||||
} else {
|
||||
gchar *tmp;
|
||||
GstStructure *s;
|
||||
gint caps_pt, caps_rate;
|
||||
|
||||
s = gst_caps_get_structure (caps, 0);
|
||||
if (s == NULL)
|
||||
goto error;
|
||||
|
||||
/* get payload type and clock rate */
|
||||
gst_structure_get_int (s, "payload", &caps_pt);
|
||||
gst_structure_get_int (s, "clock-rate", &caps_rate);
|
||||
|
||||
tmp = g_strdup_printf ("%d", rtx_pt);
|
||||
gst_sdp_media_add_format (smedia, tmp);
|
||||
|
|
@ -424,6 +221,12 @@ no_multicast:
|
|||
gst_rtsp_stream_get_index (stream));
|
||||
return;
|
||||
}
|
||||
error:
|
||||
{
|
||||
gst_sdp_media_free (smedia);
|
||||
g_warning ("ignoring stream %d", gst_rtsp_stream_get_index (stream));
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -456,7 +259,6 @@ gst_rtsp_sdp_from_media (GstSDPMessage * sdp, GstSDPInfo * info,
|
|||
for (i = 0; i < n_streams; i++) {
|
||||
GstRTSPStream *stream;
|
||||
GstCaps *caps;
|
||||
GstStructure *s;
|
||||
GstRTSPProfile profiles;
|
||||
guint mask;
|
||||
|
||||
|
|
@ -468,13 +270,6 @@ gst_rtsp_sdp_from_media (GstSDPMessage * sdp, GstSDPInfo * info,
|
|||
continue;
|
||||
}
|
||||
|
||||
s = gst_caps_get_structure (caps, 0);
|
||||
if (s == NULL) {
|
||||
gst_caps_unref (caps);
|
||||
g_warning ("ignoring stream %d without media type", i);
|
||||
continue;
|
||||
}
|
||||
|
||||
/* make a new media for each profile */
|
||||
profiles = gst_rtsp_stream_get_profiles (stream);
|
||||
mask = 1;
|
||||
|
|
@ -482,7 +277,7 @@ gst_rtsp_sdp_from_media (GstSDPMessage * sdp, GstSDPInfo * info,
|
|||
GstRTSPProfile prof = profiles & mask;
|
||||
|
||||
if (prof)
|
||||
make_media (sdp, info, media, stream, s, prof);
|
||||
make_media (sdp, info, media, stream, caps, prof);
|
||||
|
||||
mask <<= 1;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue