static GstCaps*
fs_funnel_getcaps (GstPad * pad)
{
FsFunnel *funnel = FS_FUNNEL (gst_pad_get_parent (pad));
GstCaps *caps;
caps = gst_pad_peer_get_caps_reffed (funnel->srcpad);
if (caps == NULL)
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
gst_object_unref (funnel);
return caps;
}
static GstCaps *
gst_selector_pad_getcaps (GstPad * pad)
{
GstInputSelector *sel;
GstCaps *caps;
sel = GST_INPUT_SELECTOR (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (sel, "Getting caps of srcpad peer");
caps = gst_pad_peer_get_caps_reffed (sel->srcpad);
if (caps == NULL)
caps = gst_caps_new_any ();
gst_object_unref (sel);
return caps;
}
static GstCaps *
gst_jp2k_decimator_getcaps (GstPad * pad)
{
GstJP2kDecimator *self = GST_JP2K_DECIMATOR (gst_pad_get_parent (pad));
GstPad *otherpad;
GstCaps *tmp, *ret;
otherpad = (pad == self->srcpad) ? self->sinkpad : self->srcpad;
tmp = gst_pad_peer_get_caps_reffed (otherpad);
if (tmp) {
ret = gst_caps_intersect (tmp, gst_pad_get_pad_template_caps (pad));
gst_caps_unref (tmp);
} else {
ret = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
}
gst_object_unref (self);
GST_LOG_OBJECT (pad, "Returning caps: %" GST_PTR_FORMAT, ret);
return ret;
}
/* This is essentially gst_base_src_negotiate_default() but the caps
* are guaranteed to have a channel layout for > 2 channels
*/
static gboolean
gst_pulsesrc_negotiate (GstBaseSrc * basesrc)
{
GstCaps *thiscaps;
GstCaps *caps = NULL;
GstCaps *peercaps = NULL;
gboolean result = FALSE;
/* first see what is possible on our source pad */
thiscaps = gst_pad_get_caps_reffed (GST_BASE_SRC_PAD (basesrc));
GST_DEBUG_OBJECT (basesrc, "caps of src: %" GST_PTR_FORMAT, thiscaps);
/* nothing or anything is allowed, we're done */
if (thiscaps == NULL || gst_caps_is_any (thiscaps))
goto no_nego_needed;
/* get the peer caps */
peercaps = gst_pad_peer_get_caps_reffed (GST_BASE_SRC_PAD (basesrc));
GST_DEBUG_OBJECT (basesrc, "caps of peer: %" GST_PTR_FORMAT, peercaps);
if (peercaps) {
/* get intersection */
caps = gst_caps_intersect (thiscaps, peercaps);
GST_DEBUG_OBJECT (basesrc, "intersect: %" GST_PTR_FORMAT, caps);
gst_caps_unref (thiscaps);
gst_caps_unref (peercaps);
} else {
/* no peer, work with our own caps then */
caps = thiscaps;
}
if (caps) {
/* take first (and best, since they are sorted) possibility */
caps = gst_caps_make_writable (caps);
gst_caps_truncate (caps);
/* now fixate */
if (!gst_caps_is_empty (caps)) {
gst_pad_fixate_caps (GST_BASE_SRC_PAD (basesrc), caps);
GST_DEBUG_OBJECT (basesrc, "fixated to: %" GST_PTR_FORMAT, caps);
if (gst_caps_is_any (caps)) {
/* hmm, still anything, so element can do anything and
* nego is not needed */
result = TRUE;
} else if (gst_caps_is_fixed (caps)) {
/* yay, fixed caps, use those then */
result = gst_pulsesrc_create_stream (GST_PULSESRC_CAST (basesrc), caps);
if (result)
result = gst_pad_set_caps (GST_BASE_SRC_PAD (basesrc), caps);
}
}
gst_caps_unref (caps);
}
return result;
no_nego_needed:
{
GST_DEBUG_OBJECT (basesrc, "no negotiation needed");
if (thiscaps)
gst_caps_unref (thiscaps);
return TRUE;
}
}
static gboolean
gst_droid_cam_src_vfsrc_negotiate (GstDroidCamSrc * src)
{
GstCaps *caps;
GstCaps *peer;
GstCaps *common;
gboolean ret;
GstDroidCamSrcClass *klass;
GST_DEBUG_OBJECT (src, "vfsrc negotiate");
klass = GST_DROID_CAM_SRC_GET_CLASS (src);
caps = gst_droid_cam_src_vfsrc_getcaps (src->vfsrc);
if (!caps || gst_caps_is_empty (caps)) {
GST_ELEMENT_ERROR (src, STREAM, FORMAT,
("Failed to get any supported caps"), (NULL));
if (caps) {
gst_caps_unref (caps);
}
ret = FALSE;
goto out;
}
GST_LOG_OBJECT (src, "caps %" GST_PTR_FORMAT, caps);
peer = gst_pad_peer_get_caps_reffed (src->vfsrc);
if (!peer || gst_caps_is_empty (peer) || gst_caps_is_any (peer)) {
if (peer) {
gst_caps_unref (peer);
}
gst_caps_unref (caps);
/* Use default. */
GST_CAMERA_BUFFER_POOL_LOCK (src->pool);
caps = gst_caps_new_simple (GST_NATIVE_BUFFER_NAME,
"width", G_TYPE_INT, DEFAULT_VF_WIDTH,
"height", G_TYPE_INT, DEFAULT_VF_HEIGHT,
"framerate", GST_TYPE_FRACTION, DEFAULT_FPS, 1,
"orientation-angle", G_TYPE_INT, src->pool->orientation, NULL);
GST_CAMERA_BUFFER_POOL_UNLOCK (src->pool);
GST_DEBUG_OBJECT (src, "using default caps %" GST_PTR_FORMAT, caps);
ret = gst_pad_set_caps (src->vfsrc, caps);
gst_caps_unref (caps);
goto out;
}
GST_DEBUG_OBJECT (src, "peer caps %" GST_PTR_FORMAT, peer);
common = gst_caps_intersect (caps, peer);
GST_LOG_OBJECT (src, "caps intersection %" GST_PTR_FORMAT, common);
gst_caps_unref (caps);
gst_caps_unref (peer);
if (gst_caps_is_empty (common)) {
GST_ELEMENT_ERROR (src, STREAM, FORMAT, ("No common caps"), (NULL));
gst_caps_unref (common);
ret = FALSE;
goto out;
}
if (!gst_caps_is_fixed (common)) {
gst_pad_fixate_caps (src->vfsrc, common);
}
ret = gst_pad_set_caps (src->vfsrc, common);
gst_caps_unref (common);
out:
if (ret) {
/* set camera parameters */
ret = klass->set_camera_params (src);
}
return ret;
}
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);
}
