static GstCaps *
gst_frei0r_mixer_get_caps (GstPad * pad)
{
GstFrei0rMixer *self = GST_FREI0R_MIXER (gst_pad_get_parent (pad));
GstCaps *caps = NULL;
if (self->caps) {
caps = gst_caps_ref (self->caps);
} else {
GstCaps *tmp, *tmp1;
tmp = gst_caps_copy (gst_pad_get_pad_template_caps (self->src));
tmp1 = gst_pad_peer_get_caps (pad);
if (tmp1) {
caps = gst_caps_intersect (tmp, tmp1);
gst_caps_unref (tmp1);
gst_caps_unref (tmp);
} else {
caps = tmp;
}
tmp = caps;
tmp1 = gst_pad_peer_get_caps (self->sink0);
if (tmp1) {
caps = gst_caps_intersect (tmp, tmp1);
gst_caps_unref (tmp);
gst_caps_unref (tmp1);
}
tmp = caps;
tmp1 = gst_pad_peer_get_caps (self->sink1);
if (tmp1) {
caps = gst_caps_intersect (tmp, tmp1);
gst_caps_unref (tmp);
gst_caps_unref (tmp1);
}
if (self->sink2) {
tmp = caps;
tmp1 = gst_pad_peer_get_caps (self->sink2);
if (tmp1) {
caps = gst_caps_intersect (tmp, tmp1);
gst_caps_unref (tmp);
gst_caps_unref (tmp1);
}
}
}
gst_object_unref (self);
return caps;
}
static GstCaps *
gst_frame_store_getcaps (GstPad *pad)
{
GstFrameStore *fs;
GstPad *otherpad;
GstCaps *caps;
const GstCaps *tcaps;
fs = GST_FRAME_STORE (gst_pad_get_parent (pad));
otherpad = (pad == fs->srcpad ? fs->sinkpad : fs->srcpad);
caps = gst_pad_peer_get_caps (otherpad);
tcaps = gst_pad_get_pad_template_caps (pad);
if (caps) {
GstCaps *icaps;
icaps = gst_caps_intersect (caps, tcaps);
gst_caps_unref (caps);
caps = icaps;
} else {
caps = gst_caps_copy(tcaps);
}
gst_object_unref (fs);
return caps;
}
static GstCaps *
gst_video_rate_getcaps (GstPad * pad)
{
GstVideoRate *videorate;
GstPad *otherpad;
GstCaps *caps;
videorate = GST_VIDEO_RATE (GST_PAD_PARENT (pad));
otherpad = (pad == videorate->srcpad) ? videorate->sinkpad :
videorate->srcpad;
/* we can do what the peer can */
caps = gst_pad_peer_get_caps (otherpad);
if (caps) {
GstCaps *transform;
gst_video_rate_transformcaps (otherpad, caps, pad, &transform);
gst_caps_unref (caps);
caps = transform;
} else {
/* no peer, our padtemplate is enough then */
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
}
return caps;
}
/* we can only accept caps that we and downstream can handle. */
static GstCaps *
gst_live_adder_sink_getcaps (GstPad * pad)
{
GstLiveAdder *adder;
GstCaps *result, *peercaps, *sinkcaps;
adder = GST_LIVE_ADDER (GST_PAD_PARENT (pad));
/* get the downstream possible caps */
peercaps = gst_pad_peer_get_caps (adder->srcpad);
/* get the allowed caps on this sinkpad, we use the fixed caps function so
* that it does not call recursively in this function. */
sinkcaps = gst_pad_get_fixed_caps_func (pad);
if (peercaps) {
/* if the peer has caps, intersect */
GST_DEBUG_OBJECT (adder, "intersecting peer and template caps");
result = gst_caps_intersect (peercaps, sinkcaps);
gst_caps_unref (peercaps);
gst_caps_unref (sinkcaps);
} else {
/* the peer has no caps (or there is no peer), just use the allowed caps
* of this sinkpad. */
GST_DEBUG_OBJECT (adder, "no peer caps, using sinkcaps");
result = sinkcaps;
}
return result;
}
static GstCaps *
rsn_stream_selector_getcaps (GstPad * pad)
{
GstPad *otherpad;
GstObject *parent;
GstCaps *caps;
otherpad = rsn_stream_selector_get_linked_pad (pad, FALSE);
parent = gst_object_get_parent (GST_OBJECT (pad));
if (!otherpad) {
GST_DEBUG_OBJECT (parent,
"Pad %s:%s not linked, returning ANY", GST_DEBUG_PAD_NAME (pad));
caps = gst_caps_new_any ();
} else {
GST_DEBUG_OBJECT (parent,
"Pad %s:%s is linked (to %s:%s), returning peer caps",
GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (otherpad));
/* if the peer has caps, use those. If the pad is not linked, this function
* returns NULL and we return ANY */
if (!(caps = gst_pad_peer_get_caps (otherpad)))
caps = gst_caps_new_any ();
gst_object_unref (otherpad);
}
gst_object_unref (parent);
return caps;
}
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_speex_enc_sink_getcaps (GstPad * pad)
{
GstCaps *caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
GstCaps *peercaps = NULL;
GstSpeexEnc *enc = GST_SPEEX_ENC (gst_pad_get_parent_element (pad));
peercaps = gst_pad_peer_get_caps (enc->srcpad);
if (peercaps) {
if (!gst_caps_is_empty (peercaps) && !gst_caps_is_any (peercaps)) {
GstStructure *ps = gst_caps_get_structure (peercaps, 0);
GstStructure *s = gst_caps_get_structure (caps, 0);
gint rate, channels;
if (gst_structure_get_int (ps, "rate", &rate)) {
gst_structure_fixate_field_nearest_int (s, "rate", rate);
}
if (gst_structure_get_int (ps, "channels", &channels)) {
gst_structure_fixate_field_nearest_int (s, "channels", channels);
}
}
gst_caps_unref (peercaps);
}
gst_object_unref (enc);
return caps;
}
static GstCaps *
mulawenc_getcaps (GstPad * pad)
{
GstMuLawEnc *mulawenc;
GstPad *otherpad;
GstCaps *othercaps, *result;
const GstCaps *templ;
const gchar *name;
gint i;
mulawenc = GST_MULAWENC (GST_PAD_PARENT (pad));
/* figure out the name of the caps we are going to return */
if (pad == mulawenc->srcpad) {
name = "audio/x-mulaw";
otherpad = mulawenc->sinkpad;
} else {
name = "audio/x-raw-int";
otherpad = mulawenc->srcpad;
}
/* get caps from the peer, this can return NULL when there is no peer */
othercaps = gst_pad_peer_get_caps (otherpad);
/* get the template caps to make sure we return something acceptable */
templ = gst_pad_get_pad_template_caps (pad);
if (othercaps) {
/* there was a peer */
othercaps = gst_caps_make_writable (othercaps);
/* go through the caps and remove the fields we don't want */
for (i = 0; i < gst_caps_get_size (othercaps); i++) {
GstStructure *structure;
structure = gst_caps_get_structure (othercaps, i);
/* adjust the name */
gst_structure_set_name (structure, name);
if (pad == mulawenc->srcpad) {
/* remove the fields we don't want */
gst_structure_remove_fields (structure, "width", "depth", "endianness",
"signed", NULL);
} else {
/* add fixed fields */
gst_structure_set (structure, "width", G_TYPE_INT, 16,
"depth", G_TYPE_INT, 16,
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"signed", G_TYPE_BOOLEAN, TRUE, NULL);
}
}
/* filter against the allowed caps of the pad to return our result */
result = gst_caps_intersect (othercaps, templ);
gst_caps_unref (othercaps);
} else {
/* there was no peer, return the template caps */
result = gst_caps_copy (templ);
}
return result;
}
static GstCaps *
gst_interlace_getcaps (GstPad * pad)
{
GstInterlace *interlace;
GstPad *otherpad;
GstCaps *othercaps;
GstCaps *icaps;
interlace = GST_INTERLACE (gst_pad_get_parent (pad));
otherpad =
(pad == interlace->srcpad) ? interlace->sinkpad : interlace->srcpad;
othercaps = gst_pad_peer_get_caps (otherpad);
if (othercaps == NULL) {
icaps = gst_caps_copy (gst_pad_get_pad_template_caps (otherpad));
} else {
icaps = gst_caps_intersect (othercaps,
gst_pad_get_pad_template_caps (otherpad));
gst_caps_unref (othercaps);
}
gst_caps_set_simple (icaps, "interlaced", G_TYPE_BOOLEAN,
pad == interlace->srcpad ? TRUE : FALSE, NULL);
return icaps;
}
static GstCaps *
gst_rtp_jitter_buffer_getcaps (GstPad * pad)
{
GstRtpJitterBuffer *jitterbuffer;
GstRtpJitterBufferPrivate *priv;
GstPad *other;
GstCaps *caps;
const GstCaps *templ;
jitterbuffer = GST_RTP_JITTER_BUFFER (gst_pad_get_parent (pad));
priv = jitterbuffer->priv;
other = (pad == priv->srcpad ? priv->sinkpad : priv->srcpad);
caps = gst_pad_peer_get_caps (other);
templ = gst_pad_get_pad_template_caps (pad);
if (caps == NULL) {
GST_DEBUG_OBJECT (jitterbuffer, "copy template");
caps = gst_caps_copy (templ);
} else {
GstCaps *intersect;
GST_DEBUG_OBJECT (jitterbuffer, "intersect with template");
intersect = gst_caps_intersect (caps, templ);
gst_caps_unref (caps);
caps = intersect;
}
gst_object_unref (jitterbuffer);
return caps;
}
static GstCaps *
gst_caps_debug_getcaps (GstPad * pad)
{
GstCaps *caps;
GstCapsDebug *capsdebug;
gchar *s;
GstPad *otherpad;
capsdebug = GST_CAPS_DEBUG (gst_pad_get_parent (pad));
otherpad =
(pad == capsdebug->srcpad) ? capsdebug->sinkpad : capsdebug->srcpad;
GST_INFO ("%s called getcaps", THISPAD);
caps = gst_pad_peer_get_caps (otherpad);
s = gst_caps_to_string (caps);
GST_INFO ("%s returned %s", OTHERPAD, s);
g_free (s);
if (caps == NULL)
caps = gst_caps_new_any ();
gst_object_unref (capsdebug);
return caps;
}
static GstCaps *
gst_mse_getcaps (GstPad * pad)
{
GstMSE *fs;
GstCaps *caps;
GstCaps *icaps;
GstCaps *peercaps;
fs = GST_MSE (gst_pad_get_parent (pad));
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
if (pad != fs->srcpad) {
peercaps = gst_pad_peer_get_caps (fs->srcpad);
if (peercaps) {
icaps = gst_caps_intersect (caps, peercaps);
gst_caps_unref (caps);
gst_caps_unref (peercaps);
caps = icaps;
}
}
if (pad != fs->sinkpad_ref) {
peercaps = gst_pad_peer_get_caps (fs->sinkpad_ref);
if (peercaps) {
icaps = gst_caps_intersect (caps, peercaps);
gst_caps_unref (caps);
gst_caps_unref (peercaps);
caps = icaps;
}
}
if (pad != fs->sinkpad_test) {
peercaps = gst_pad_peer_get_caps (fs->sinkpad_test);
if (peercaps) {
icaps = gst_caps_intersect (caps, peercaps);
gst_caps_unref (caps);
gst_caps_unref (peercaps);
caps = icaps;
}
}
gst_object_unref (fs);
return caps;
}
static GstCaps *
gst_valve_getcaps (GstPad * pad)
{
GstValve *valve = GST_VALVE (gst_pad_get_parent (pad));
GstCaps *caps;
if (pad == valve->sinkpad)
caps = gst_pad_peer_get_caps (valve->srcpad);
else
caps = gst_pad_peer_get_caps (valve->sinkpad);
if (caps == NULL)
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
gst_object_unref (valve);
return caps;
}
/* we can only accept caps that we and downstream can handle.
* if we have filtercaps set, use those to constrain the target caps.
*/
static GstCaps *
gst_adder_sink_getcaps (GstPad * pad)
{
GstAdder *adder;
GstCaps *result, *peercaps, *sinkcaps, *filter_caps;
adder = GST_ADDER (GST_PAD_PARENT (pad));
GST_OBJECT_LOCK (adder);
/* take filter */
if ((filter_caps = adder->filter_caps))
gst_caps_ref (filter_caps);
GST_OBJECT_UNLOCK (adder);
/* get the downstream possible caps */
peercaps = gst_pad_peer_get_caps (adder->srcpad);
/* get the allowed caps on this sinkpad, we use the fixed caps function so
* that it does not call recursively in this function. */
sinkcaps = gst_pad_get_fixed_caps_func (pad);
if (peercaps) {
/* restrict with filter-caps if any */
if (filter_caps) {
GST_DEBUG_OBJECT (adder, "filtering peer caps");
result = gst_caps_intersect (peercaps, filter_caps);
gst_caps_unref (peercaps);
peercaps = result;
}
/* if the peer has caps, intersect */
GST_DEBUG_OBJECT (adder, "intersecting peer and template caps");
result = gst_caps_intersect (peercaps, sinkcaps);
gst_caps_unref (peercaps);
gst_caps_unref (sinkcaps);
} else {
/* the peer has no caps (or there is no peer), just use the allowed caps
* of this sinkpad. */
/* restrict with filter-caps if any */
if (filter_caps) {
GST_DEBUG_OBJECT (adder, "no peer caps, using filtered sinkcaps");
result = gst_caps_intersect (sinkcaps, filter_caps);
gst_caps_unref (sinkcaps);
} else {
GST_DEBUG_OBJECT (adder, "no peer caps, using sinkcaps");
result = sinkcaps;
}
}
if (filter_caps)
gst_caps_unref (filter_caps);
GST_LOG_OBJECT (adder, "getting caps on pad %p,%s to %" GST_PTR_FORMAT, pad,
GST_PAD_NAME (pad), result);
return result;
}
static GstCaps *
gst_smokeenc_getcaps (GstPad * pad)
{
GstSmokeEnc *smokeenc = GST_SMOKEENC (gst_pad_get_parent (pad));
GstPad *otherpad;
GstCaps *result, *caps;
const GstCaps *tcaps;
const char *name;
int i;
GstStructure *structure = NULL;
/* we want to proxy properties like width, height and framerate from the
other end of the element */
otherpad = (pad == smokeenc->srcpad) ? smokeenc->sinkpad : smokeenc->srcpad;
/* get template caps, we always need this to fiter the peer caps */
tcaps = gst_pad_get_pad_template_caps (otherpad);
/* get any constraints on the peer pad */
caps = gst_pad_peer_get_caps (otherpad);
if (caps == NULL)
caps = gst_caps_copy (tcaps);
else
caps = gst_caps_make_writable (caps);
/* intersect with the template */
result = gst_caps_intersect (caps, tcaps);
gst_caps_unref (caps);
if (pad == smokeenc->srcpad) {
name = "video/x-smoke";
} else {
name = "video/x-raw-yuv";
}
/* we can only copy width, height, framerate from one side to the other */
for (i = 0; i < gst_caps_get_size (result); i++) {
structure = gst_caps_get_structure (result, i);
gst_structure_set_name (structure, name);
gst_structure_remove_field (structure, "format");
/* ... but for the sink pad, we only do I420 anyway, so add that */
if (pad == smokeenc->sinkpad) {
gst_structure_set (structure, "format", GST_TYPE_FOURCC,
GST_STR_FOURCC ("I420"), NULL);
}
}
gst_object_unref (smokeenc);
return result;
}
static GstCaps *
mulawenc_getcaps (GstPad * pad)
{
GstMuLawEnc *mulawenc;
GstPad *otherpad;
GstCaps *base_caps, *othercaps;
mulawenc = GST_MULAWENC (GST_PAD_PARENT (pad));
base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
if (pad == mulawenc->srcpad) {
otherpad = mulawenc->sinkpad;
} else {
otherpad = mulawenc->srcpad;
}
othercaps = gst_pad_peer_get_caps (otherpad);
if (othercaps) {
GstStructure *structure;
const GValue *orate, *ochans;
const GValue *rate, *chans;
GValue irate = { 0 }, ichans = {
0};
if (gst_caps_is_empty (othercaps) || gst_caps_is_any (othercaps))
goto done;
structure = gst_caps_get_structure (othercaps, 0);
orate = gst_structure_get_value (structure, "rate");
ochans = gst_structure_get_value (structure, "channels");
if (!orate || !ochans)
goto done;
structure = gst_caps_get_structure (base_caps, 0);
rate = gst_structure_get_value (structure, "rate");
chans = gst_structure_get_value (structure, "channels");
if (!rate || !chans)
goto done;
gst_value_intersect (&irate, orate, rate);
gst_value_intersect (&ichans, ochans, chans);
/* Set the samplerate/channels on the to-be-returned caps */
structure = gst_caps_get_structure (base_caps, 0);
gst_structure_set_value (structure, "rate", &irate);
gst_structure_set_value (structure, "channels", &ichans);
done:
gst_caps_unref (othercaps);
}
return base_caps;
}
static GstCaps*
fs_funnel_getcaps (GstPad * pad)
{
FsFunnel *funnel = FS_FUNNEL (gst_pad_get_parent (pad));
GstCaps *caps;
caps = gst_pad_peer_get_caps (funnel->srcpad);
if (caps == NULL)
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
gst_object_unref (funnel);
return caps;
}
static gboolean
gst_vis_src_negotiate (GstVisual * visual)
{
GstCaps *othercaps, *target, *intersect;
GstStructure *structure;
GstCaps *caps;
caps = gst_pad_get_caps (visual->srcpad);
/* see what the peer can do */
othercaps = gst_pad_peer_get_caps (visual->srcpad);
if (othercaps) {
intersect = gst_caps_intersect (othercaps, caps);
gst_caps_unref (othercaps);
gst_caps_unref (caps);
if (gst_caps_is_empty (intersect))
goto no_format;
target = gst_caps_copy_nth (intersect, 0);
gst_caps_unref (intersect);
} else {
/* need a copy, we'll be modifying it when fixating */
target = gst_caps_copy (caps);
gst_caps_unref (caps);
}
/* fixate in case something is not fixed. This does nothing if the value is
* already fixed. For video we always try to fixate to something like
* 320x240x30 by convention. */
structure = gst_caps_get_structure (target, 0);
gst_structure_fixate_field_nearest_int (structure, "width", 320);
gst_structure_fixate_field_nearest_int (structure, "height", 240);
gst_structure_fixate_field_nearest_fraction (structure, "framerate", 30, 1);
gst_pad_set_caps (visual->srcpad, target);
gst_caps_unref (target);
return TRUE;
/* ERRORS */
no_format:
{
GST_ELEMENT_ERROR (visual, STREAM, FORMAT, (NULL),
("could not negotiate output format"));
gst_caps_unref (intersect);
return FALSE;
}
}
static GstCaps *
gst_selector_pad_getcaps (GstPad * pad)
{
RsnStreamSelector *sel;
GstCaps *caps;
sel = RSN_STREAM_SELECTOR (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (sel, "Getting caps of srcpad peer");
caps = gst_pad_peer_get_caps (sel->srcpad);
if (caps == NULL)
caps = gst_caps_new_any ();
gst_object_unref (sel);
return caps;
}
static GstCaps *
gst_audio_ringbuffer_getcaps (GstPad * pad)
{
GstAudioRingbuffer *ringbuffer;
GstPad *otherpad;
GstCaps *result;
ringbuffer = GST_AUDIO_RINGBUFFER (GST_PAD_PARENT (pad));
otherpad =
(pad == ringbuffer->srcpad ? ringbuffer->sinkpad : ringbuffer->srcpad);
result = gst_pad_peer_get_caps (otherpad);
if (result == NULL)
result = gst_caps_new_any ();
return result;
}
static void
check_peer_caps (GstPad * pad, const char *expected, const char *name)
{
GstCaps *caps;
GstCaps *expected_caps;
caps = gst_pad_peer_get_caps (pad);
fail_unless (caps != NULL);
expected_caps = gst_caps_from_string (expected);
fail_unless (expected_caps != NULL);
check_caps_identical (caps, expected_caps, name);
gst_caps_unref (caps);
gst_caps_unref (expected_caps);
}
static GstCaps * create_src_caps (GstOmxBaseFilter21 *omx_base)
{
GstCaps *caps;
GstOmxBaseFilter21 *self;
int width, height;
GstStructure *struc;
self = GST_OMX_BASE_FILTER21 (omx_base);
caps = gst_pad_peer_get_caps (omx_base->srcpad);
if (gst_caps_is_empty (caps))
{
width = 1920;
height = 1088;
}
else
{
GstStructure *s;
s = gst_caps_get_structure (caps, 0);
if (!(gst_structure_get_int (s, "width", &width) &&
gst_structure_get_int (s, "height", &height)))
{
width = 1920;
height = 1088;
}
}
caps = gst_caps_new_empty ();
struc = gst_structure_new (("video/x-raw-yuv"),
"width", G_TYPE_INT, width,
"height", G_TYPE_INT, height,
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'),
NULL);
gst_caps_append_structure (caps, struc);
return caps;
}
static GstCaps *
gst_rtp_depay_getcaps (GstPad * pad)
{
GstRTPDepay *src;
GstPad *other;
GstCaps *caps;
src = GST_RTP_DEPAY (GST_PAD_PARENT (pad));
other = pad == src->src_rtp ? src->sink_rtp : src->src_rtp;
caps = gst_pad_peer_get_caps (other);
if (caps == NULL)
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
return caps;
}
static gboolean
gst_teletextdec_push_preroll_buffer (GstTeletextDec * teletext)
{
GstFlowReturn ret;
GstBuffer *buf;
gboolean res = TRUE;
GstStructure *structure;
const gchar *mimetype;
GstCaps *out_caps, *peer_caps, *pad_caps;
/* the stream is sparse, we send a dummy buffer for preroll */
peer_caps = gst_pad_peer_get_caps (teletext->srcpad);
pad_caps = gst_pad_get_caps (teletext->srcpad);
out_caps = gst_caps_intersect (pad_caps, peer_caps);
if (gst_caps_is_empty (out_caps)) {
res = FALSE;
goto beach;
}
gst_caps_truncate (out_caps);
structure = gst_caps_get_structure (out_caps, 0);
mimetype = gst_structure_get_name (structure);
if (g_strcmp0 (mimetype, "video/x-raw-rgb") == 0) {
/* omit preroll buffer for this format */
goto beach;
}
buf = gst_buffer_new_and_alloc (1);
GST_BUFFER_DATA (buf)[0] = 0;
gst_buffer_set_caps (buf, out_caps);
ret = gst_pad_push (teletext->srcpad, buf);
if (ret != GST_FLOW_OK)
res = FALSE;
beach:
{
gst_caps_unref (out_caps);
gst_caps_unref (pad_caps);
gst_caps_unref (peer_caps);
return res;
}
}
/* we can only accept caps that we and downstream can handle. */
static GstCaps *
gst_interleave_sink_getcaps (GstPad * pad)
{
GstInterleave *self = GST_INTERLEAVE (gst_pad_get_parent (pad));
GstCaps *result, *peercaps, *sinkcaps;
GST_OBJECT_LOCK (self);
/* If we already have caps on one of the sink pads return them */
if (self->sinkcaps) {
result = gst_caps_copy (self->sinkcaps);
} else {
/* get the downstream possible caps */
peercaps = gst_pad_peer_get_caps (self->src);
/* get the allowed caps on this sinkpad */
sinkcaps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
__remove_channels (sinkcaps);
if (peercaps) {
__remove_channels (peercaps);
/* if the peer has caps, intersect */
GST_DEBUG_OBJECT (pad, "intersecting peer and template caps");
result = gst_caps_intersect (peercaps, sinkcaps);
gst_caps_unref (peercaps);
gst_caps_unref (sinkcaps);
} else {
/* the peer has no caps (or there is no peer), just use the allowed caps
* of this sinkpad. */
GST_DEBUG_OBJECT (pad, "no peer caps, using sinkcaps");
result = sinkcaps;
}
__set_channels (result, 1);
}
GST_OBJECT_UNLOCK (self);
gst_object_unref (self);
GST_DEBUG_OBJECT (pad, "Returning caps %" GST_PTR_FORMAT, result);
return result;
}
static gboolean
gst_monoscope_src_negotiate (GstMonoscope * monoscope)
{
GstCaps *othercaps, *target, *intersect;
GstStructure *structure;
const GstCaps *templ;
templ = gst_pad_get_pad_template_caps (monoscope->srcpad);
GST_DEBUG_OBJECT (monoscope, "performing negotiation");
/* see what the peer can do */
othercaps = gst_pad_peer_get_caps (monoscope->srcpad);
if (othercaps) {
intersect = gst_caps_intersect (othercaps, templ);
gst_caps_unref (othercaps);
if (gst_caps_is_empty (intersect))
goto no_format;
target = gst_caps_copy_nth (intersect, 0);
gst_caps_unref (intersect);
} else {
target = gst_caps_ref ((GstCaps *) templ);
}
structure = gst_caps_get_structure (target, 0);
gst_structure_fixate_field_nearest_int (structure, "width", 320);
gst_structure_fixate_field_nearest_int (structure, "height", 240);
gst_structure_fixate_field_nearest_fraction (structure, "framerate", 25, 1);
gst_pad_set_caps (monoscope->srcpad, target);
gst_caps_unref (target);
return TRUE;
no_format:
{
gst_caps_unref (intersect);
return FALSE;
}
}
static gboolean
gst_goom_src_negotiate (GstGoom * goom)
{
GstCaps *othercaps, *target;
GstStructure *structure;
const GstCaps *templ;
templ = gst_pad_get_pad_template_caps (goom->srcpad);
GST_DEBUG_OBJECT (goom, "performing negotiation");
/* see what the peer can do */
othercaps = gst_pad_peer_get_caps (goom->srcpad);
if (othercaps) {
target = gst_caps_intersect (othercaps, templ);
gst_caps_unref (othercaps);
if (gst_caps_is_empty (target))
goto no_format;
gst_caps_truncate (target);
} else {
target = gst_caps_ref ((GstCaps *) templ);
}
structure = gst_caps_get_structure (target, 0);
gst_structure_fixate_field_nearest_int (structure, "width", DEFAULT_WIDTH);
gst_structure_fixate_field_nearest_int (structure, "height", DEFAULT_HEIGHT);
gst_structure_fixate_field_nearest_fraction (structure, "framerate",
DEFAULT_FPS_N, DEFAULT_FPS_D);
gst_pad_set_caps (goom->srcpad, target);
gst_caps_unref (target);
return TRUE;
no_format:
{
gst_caps_unref (target);
return FALSE;
}
}
static GstCaps *
gst_compare_getcaps (GstPad * pad)
{
GstCompare *comp;
GstPad *otherpad;
GstCaps *result;
comp = GST_COMPARE (gst_pad_get_parent (pad));
if (G_UNLIKELY (comp == NULL))
return gst_caps_new_any ();
otherpad = (pad == comp->srcpad ? comp->sinkpad : comp->srcpad);
result = gst_pad_peer_get_caps (otherpad);
if (result == NULL)
result = gst_caps_new_any ();
gst_object_unref (comp);
return result;
}
static GstCaps *
rsn_parsetter_src_getcaps (GstPad * pad)
{
RsnParSetter *parset = RSN_PARSETTER (gst_pad_get_parent (pad));
GstCaps *ret;
const GstCaps *templ_caps = gst_pad_get_pad_template_caps (pad);
ret = gst_pad_peer_get_caps (parset->sinkpad);
if (ret == NULL)
ret = gst_caps_copy (templ_caps);
else {
GstCaps *temp;
temp = gst_caps_intersect (templ_caps, ret);
gst_caps_unref (ret);
ret = rsn_parsetter_convert_caps (parset, temp, parset->is_widescreen);
gst_caps_unref (temp);
}
gst_object_unref (parset);
return ret;
}
static GstCaps *
gst_segment_clip_getcaps (GstPad * pad)
{
GstSegmentClip *self = GST_SEGMENT_CLIP (gst_pad_get_parent (pad));
GstPad *otherpad;
GstCaps *tmp, *ret;
otherpad = (pad == self->srcpad) ? self->sinkpad : self->srcpad;
tmp = gst_pad_peer_get_caps (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;
}
