static GstCaps *
gst_gl_mixer_pad_sink_getcaps (GstPad * pad, GstGLMixer * mix, GstCaps * filter)
{
GstCaps *srccaps;
GstCaps *template_caps;
GstCaps *filtered_caps;
GstCaps *returned_caps;
gboolean had_current_caps = TRUE;
template_caps = gst_pad_get_pad_template_caps (pad);
srccaps = gst_pad_get_current_caps (pad);
if (srccaps == NULL) {
had_current_caps = FALSE;
srccaps = template_caps;
} else {
srccaps = gst_caps_merge (srccaps, gst_gl_mixer_update_caps (mix, srccaps));
}
filtered_caps = srccaps;
if (filter)
filtered_caps = gst_caps_intersect (srccaps, filter);
returned_caps = gst_caps_intersect (filtered_caps, template_caps);
if (filter)
gst_caps_unref (filtered_caps);
if (had_current_caps)
gst_caps_unref (template_caps);
GST_DEBUG_OBJECT (pad, "returning %" GST_PTR_FORMAT, returned_caps);
return returned_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_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 gboolean
same_clock_rate_fold (const GValue * item, GValue * ret, gpointer user_data)
{
GstPad *mypad = user_data;
GstPad *pad = g_value_get_object (item);
GstCaps *peercaps;
GstCaps *accumcaps;
GstCaps *intersect;
if (pad == mypad)
return TRUE;
accumcaps = g_value_get_boxed (ret);
peercaps = gst_pad_peer_query_caps (pad, accumcaps);
if (!peercaps) {
g_warning ("no peercaps");
return TRUE;
}
peercaps = gst_caps_make_writable (peercaps);
clear_caps (peercaps, TRUE);
intersect = gst_caps_intersect (accumcaps, peercaps);
g_value_take_boxed (ret, intersect);
gst_caps_unref (peercaps);
return !gst_caps_is_empty (intersect);
}
static GstCaps *
fs_videoanyrate_transform_caps (GstBaseTransform *trans,
GstPadDirection direction,
GstCaps *caps,
GstCaps *filter)
{
GstCaps *mycaps = gst_caps_copy (caps);
guint i;
if (gst_caps_get_size (mycaps) == 0)
return mycaps;
GST_DEBUG_OBJECT (trans, "Transforming caps");
for (i = 0; i < gst_caps_get_size (mycaps); i++)
{
GstStructure *s;
s = gst_caps_get_structure (mycaps, i);
if (gst_structure_has_field (s, "framerate"))
gst_structure_set (s,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
}
if (filter)
{
GstCaps *intersected = gst_caps_intersect (mycaps, filter);
gst_caps_unref (mycaps);
mycaps = intersected;
}
return mycaps;
}
/* 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 *
gst_decklink_audio_src_get_caps (GstBaseSrc * bsrc, GstCaps * filter)
{
GstDecklinkAudioSrc *self = GST_DECKLINK_AUDIO_SRC_CAST (bsrc);
GstCaps *caps;
// We don't support renegotiation
caps = gst_pad_get_current_caps (GST_BASE_SRC_PAD (bsrc));
if (!caps) {
GstCaps *channel_filter, *templ;
templ = gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD (bsrc));
channel_filter =
gst_caps_new_simple ("audio/x-raw", "channels", G_TYPE_INT,
self->channels, NULL);
caps = gst_caps_intersect (channel_filter, templ);
gst_caps_unref (channel_filter);
gst_caps_unref (templ);
}
if (filter) {
GstCaps *tmp =
gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (caps);
caps = tmp;
}
return caps;
}
static GstCaps *
gst_gdk_pixbuf_get_capslist (void)
{
GSList *slist;
GSList *slist0;
GstCaps *capslist = NULL;
GstCaps *return_caps = NULL;
GstCaps *tmpl_caps;
capslist = gst_caps_new_empty ();
slist0 = gdk_pixbuf_get_formats ();
for (slist = slist0; slist; slist = g_slist_next (slist)) {
GdkPixbufFormat *pixbuf_format;
char **mimetypes;
char **mimetype;
pixbuf_format = slist->data;
mimetypes = gdk_pixbuf_format_get_mime_types (pixbuf_format);
for (mimetype = mimetypes; *mimetype; mimetype++) {
gst_caps_append_structure (capslist, gst_structure_new (*mimetype, NULL));
}
g_strfreev (mimetypes);
}
g_slist_free (slist0);
tmpl_caps = gst_static_caps_get (&gst_gdk_pixbuf_sink_template.static_caps);
return_caps = gst_caps_intersect (capslist, tmpl_caps);
gst_caps_unref (tmpl_caps);
gst_caps_unref (capslist);
return return_caps;
}
GstCaps *
gst_opus_dec_getcaps (GstAudioDecoder * dec, GstCaps * filter)
{
GstCaps *caps, *proxy_filter = NULL, *ret;
if (filter) {
proxy_filter = gst_caps_copy (filter);
gst_opus_dec_caps_extend_channels_options (proxy_filter);
gst_opus_dec_caps_extend_rate_options (proxy_filter);
}
caps = gst_audio_decoder_proxy_getcaps (dec, NULL, proxy_filter);
if (proxy_filter)
gst_caps_unref (proxy_filter);
if (caps) {
caps = gst_caps_make_writable (caps);
gst_opus_dec_caps_extend_channels_options (caps);
gst_opus_dec_caps_extend_rate_options (caps);
}
if (filter) {
ret = gst_caps_intersect (caps, filter);
gst_caps_unref (caps);
} else {
ret = caps;
}
return ret;
}
static GstCaps *
gst_video_convert_fixate_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
{
GstCaps *result;
GST_DEBUG_OBJECT (trans, "trying to fixate othercaps %" GST_PTR_FORMAT
" based on caps %" GST_PTR_FORMAT, othercaps, caps);
result = gst_caps_intersect (othercaps, caps);
if (gst_caps_is_empty (result)) {
gst_caps_unref (result);
result = othercaps;
} else {
gst_caps_unref (othercaps);
}
GST_DEBUG_OBJECT (trans, "now fixating %" GST_PTR_FORMAT, result);
result = gst_caps_make_writable (result);
gst_video_convert_fixate_format (trans, caps, result);
/* fixate remaining fields */
result = gst_caps_fixate (result);
return result;
}
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 gboolean
mx_gst_pad_is_compatible(MxGstGraphElementPad *src,
MxGstGraphElementPad *dest)
{
GstCaps *src_caps = gst_pad_get_caps(src->priv->pad);
GstCaps *dest_caps = gst_pad_get_caps(dest->priv->pad);
if( (GST_PAD_SRC != gst_pad_get_direction(src->priv->pad)) ||
(GST_PAD_SINK != gst_pad_get_direction(dest->priv->pad)) )
{
return FALSE;
}
if(gst_caps_is_any(src_caps) || gst_caps_is_any(dest_caps))
{
return TRUE;
}
if(gst_caps_is_empty(src_caps) || gst_caps_is_empty(dest_caps))
{
return FALSE;
}
return !gst_caps_is_empty(gst_caps_intersect(src_caps, dest_caps));
}
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_dvd_spu_video_proxy_getcaps (GstPad * pad, GstCaps * filter)
{
GstDVDSpu *dvdspu = GST_DVD_SPU (gst_pad_get_parent (pad));
GstCaps *caps;
GstPad *otherpad;
/* Proxy the getcaps between videosink and the srcpad, ignoring the
* subpicture sink pad */
otherpad = (pad == dvdspu->srcpad) ? dvdspu->videosinkpad : dvdspu->srcpad;
caps = gst_pad_peer_query_caps (otherpad, filter);
if (caps) {
GstCaps *temp, *templ;
templ = gst_pad_get_pad_template_caps (otherpad);
temp = gst_caps_intersect (caps, templ);
gst_caps_unref (templ);
gst_caps_unref (caps);
caps = temp;
} else {
caps = gst_pad_get_pad_template_caps (pad);
}
gst_object_unref (dvdspu);
return caps;
}
GstCaps* bayer_transform_intersect (const GstCaps* bayer, const GstCaps* raw)
{
GstCaps* caps2 = gst_caps_copy(raw);
gst_caps_change_name(caps2, "video/x-bayer");
GstCaps* caps1 = gst_caps_intersect((GstCaps*)bayer, caps2);
return caps1;
}
static gboolean
gst_decklink_sink_videosink_query (GstPad * pad, GstObject * parent,
GstQuery * query)
{
gboolean res;
GstDecklinkSink *decklinksink;
decklinksink = GST_DECKLINK_SINK (parent);
GST_DEBUG_OBJECT (decklinksink, "query");
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CAPS:{
GstCaps *mode_caps, *filter, *caps;
/* FIXME: do we change mode if incoming caps change? If yes, we
* should probably return the template caps instead */
mode_caps = gst_decklink_mode_get_caps (decklinksink->mode);
gst_query_parse_caps (query, &filter);
caps = gst_caps_intersect (mode_caps, filter);
gst_caps_unref (mode_caps);
gst_query_set_caps_result (query, caps);
gst_caps_unref (caps);
break;
}
default:
res = gst_pad_query_default (pad, parent, query);
break;
}
return res;
}
static GstCaps *
gst_vdp_sink_get_allowed_caps (GstVdpDevice * device, GValue * par)
{
GstCaps *templ_caps, *allowed_caps, *caps;
gint i;
allowed_caps = gst_vdp_output_buffer_get_allowed_caps (device);
templ_caps = gst_static_pad_template_get_caps (&sink_template);
caps = gst_caps_intersect (allowed_caps, templ_caps);
gst_caps_unref (allowed_caps);
gst_caps_unref (templ_caps);
if (!par)
par = gst_vdp_sink_calculate_par (device->display);
for (i = 0; i < gst_caps_get_size (caps); i++) {
GstStructure *structure;
structure = gst_caps_get_structure (caps, i);
gst_structure_set_value (structure, "pixel-aspect-ratio", par);
}
return caps;
}
static gboolean
gst_rtp_h263p_pay_setcaps (GstRTPBasePayload * 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_query_caps (GST_RTP_BASE_PAYLOAD_SRCPAD (payload), NULL);
if (peercaps) {
GstCaps *intersect = gst_caps_intersect (peercaps,
gst_pad_get_pad_template_caps (GST_RTP_BASE_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_rtp_base_payload_set_options (payload, "video", TRUE,
(gchar *) encoding_name, 90000);
res = gst_rtp_base_payload_set_outcaps (payload, NULL);
g_free (encoding_name);
return res;
}
/*
* cheese_camera_device_filter_caps:
* @device: the #CheeseCameraDevice
* @caps: the #GstCaps that the device supports
* @formats: an array of strings of video formats, in the form axb, where a and
* b are in units of pixels
*
* Filter the supplied @caps with %CHEESE_MAXIMUM_RATE to only allow @formats
* which can reach the desired framerate.
*
* Returns: the filtered #GstCaps
*/
static GstCaps *
cheese_camera_device_filter_caps (CheeseCameraDevice *device,
GstCaps *caps,
const gchar const *formats[])
{
GstCaps *filter;
GstCaps *allowed;
gsize i;
filter = gst_caps_new_empty ();
for (i = 0; formats[i] != NULL; i++)
{
gst_caps_append (filter,
gst_caps_new_simple (formats[i],
"framerate", GST_TYPE_FRACTION_RANGE,
0, 1, CHEESE_MAXIMUM_RATE, 1,
NULL));
}
allowed = gst_caps_intersect (caps, filter);
GST_DEBUG ("Supported caps %" GST_PTR_FORMAT, caps);
GST_DEBUG ("Filter caps %" GST_PTR_FORMAT, filter);
GST_DEBUG ("Filtered caps %" GST_PTR_FORMAT, allowed);
gst_caps_unref (filter);
return allowed;
}
static GstCaps *
gst_genicamsrc_get_caps (GstBaseSrc * bsrc, GstCaps * filter)
{
GstGenicamSrc *src = GST_GENICAM_SRC (bsrc);
GstCaps *caps;
if (src->hDS == NULL) {
caps = gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD (src));
} else {
caps = gst_caps_copy (src->caps);
}
GST_DEBUG_OBJECT (src, "The caps before filtering are %" GST_PTR_FORMAT,
caps);
if (filter && caps) {
GstCaps *tmp = gst_caps_intersect (caps, filter);
gst_caps_unref (caps);
caps = tmp;
}
GST_DEBUG_OBJECT (src, "The caps after filtering are %" GST_PTR_FORMAT, caps);
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_rtp_mux_getcaps (GstPad * pad, GstRTPMux * mux, GstCaps * filter)
{
GstCaps *caps = NULL;
GstIterator *iter = NULL;
GValue v = { 0 };
GstIteratorResult res;
GstCaps *peercaps;
GstCaps *othercaps;
GstCaps *tcaps;
GstCaps *other_filtered;
peercaps = gst_pad_peer_query_caps (mux->srcpad, filter);
if (peercaps) {
tcaps = gst_pad_get_pad_template_caps (pad);
othercaps = gst_caps_intersect_full (peercaps, tcaps,
GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (peercaps);
} else {
tcaps = gst_pad_get_pad_template_caps (mux->srcpad);
if (filter)
othercaps = gst_caps_intersect_full (filter, tcaps,
GST_CAPS_INTERSECT_FIRST);
else
othercaps = gst_caps_copy (tcaps);
}
gst_caps_unref (tcaps);
clear_caps (othercaps, FALSE);
other_filtered = gst_caps_copy (othercaps);
clear_caps (other_filtered, TRUE);
g_value_init (&v, GST_TYPE_CAPS);
iter = gst_element_iterate_sink_pads (GST_ELEMENT (mux));
do {
gst_value_set_caps (&v, other_filtered);
res = gst_iterator_fold (iter, same_clock_rate_fold, &v, pad);
gst_iterator_resync (iter);
} while (res == GST_ITERATOR_RESYNC);
gst_iterator_free (iter);
gst_caps_unref (other_filtered);
caps = gst_caps_intersect ((GstCaps *) gst_value_get_caps (&v), othercaps);
g_value_unset (&v);
gst_caps_unref (othercaps);
if (res == GST_ITERATOR_ERROR) {
gst_caps_unref (caps);
caps = gst_caps_new_empty ();
}
return caps;
}
static gboolean
gst_vdp_vpp_sink_setcaps (GstPad * pad, GstCaps * caps)
{
GstVdpVideoPostProcess *vpp =
GST_VDP_VIDEO_POST_PROCESS (gst_pad_get_parent (pad));
GstStructure *structure;
GstCaps *output_caps, *allowed_caps, *src_caps;
gboolean res;
/* extract interlaced flag */
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_boolean (structure, "interlaced", &vpp->interlaced);
allowed_caps = gst_pad_get_allowed_caps (vpp->srcpad);
structure = gst_caps_get_structure (allowed_caps, 0);
output_caps = gst_vdp_video_to_output_caps (caps);
src_caps = gst_caps_intersect (output_caps, allowed_caps);
gst_caps_truncate (src_caps);
if (gst_caps_is_empty (src_caps))
goto invalid_caps;
GST_DEBUG ("output_caps: %" GST_PTR_FORMAT " allowed_caps: %" GST_PTR_FORMAT
" src_caps: %" GST_PTR_FORMAT, output_caps, allowed_caps, src_caps);
gst_caps_unref (output_caps);
gst_caps_unref (allowed_caps);
if (gst_vdp_vpp_is_interlaced (vpp)) {
gint fps_n, fps_d;
structure = gst_caps_get_structure (src_caps, 0);
if (!gst_structure_get_fraction (structure, "framerate", &fps_n, &fps_d)) {
gst_caps_unref (src_caps);
goto invalid_caps;
}
gst_fraction_double (&fps_n, &fps_d);
gst_structure_set (structure, "framerate", GST_TYPE_FRACTION, fps_n, fps_d,
NULL);
gst_structure_remove_field (structure, "interlaced");
vpp->field_duration = gst_util_uint64_scale (GST_SECOND, fps_d, fps_n);
}
res = gst_pad_set_caps (vpp->srcpad, src_caps);
done:
gst_object_unref (vpp);
return res;
invalid_caps:
GST_ERROR_OBJECT (vpp, "invalid caps: %" GST_PTR_FORMAT, caps);
res = FALSE;
goto done;
}
static gboolean gst_imx_compositor_sink_query(GstImxBPAggregator *aggregator, GstImxBPAggregatorPad *pad, GstQuery *query)
{
switch (GST_QUERY_TYPE(query))
{
case GST_QUERY_CAPS:
{
/* Custom caps query response. Take the sinkpad template caps,
* optionally filter them, and return them as the result.
* This ensures that the caps that the derived class supports
* for input data are actually used (by default, the aggregator
* base classes try to keep input and output caps equal) */
GstCaps *filter, *caps;
gst_query_parse_caps(query, &filter);
caps = gst_pad_get_pad_template_caps(GST_PAD(pad));
if (filter != NULL)
{
GstCaps *unfiltered_caps = gst_caps_make_writable(caps);
caps = gst_caps_intersect(unfiltered_caps, filter);
gst_caps_unref(unfiltered_caps);
}
GST_DEBUG_OBJECT(aggregator, "responding to CAPS query with caps %" GST_PTR_FORMAT, (gpointer)caps);
gst_query_set_caps_result(query, caps);
gst_caps_unref(caps);
return TRUE;
}
case GST_QUERY_ACCEPT_CAPS:
{
/* Custom accept_caps query response. Simply check if
* the supplied caps are a valid subset of the sinkpad's
* template caps. This is done for the same reasons
* as the caps query response above. */
GstCaps *accept_caps = NULL, *template_caps = NULL;
gboolean ret;
gst_query_parse_accept_caps(query, &accept_caps);
template_caps = gst_pad_get_pad_template_caps(GST_PAD(pad));
ret = gst_caps_is_subset(accept_caps, template_caps);
GST_DEBUG_OBJECT(aggregator, "responding to ACCEPT_CAPS query with value %d (acceptcaps: %" GST_PTR_FORMAT " template caps %" GST_PTR_FORMAT ")", ret, (gpointer)accept_caps, (gpointer)template_caps);
gst_query_set_accept_caps_result(query, ret);
return TRUE;
}
default:
return GST_IMXBP_AGGREGATOR_CLASS(gst_imx_compositor_parent_class)->sink_query(aggregator, pad, query);
}
}
/**
* gst_factory_list_filter:
* @array: a #GValueArray to filter
* @caps: a #GstCaps
*
* Filter out all the elementfactories in @array that can handle @caps as
* input.
*
* Returns: a #GValueArray of #GstElementFactory elements. Use
* g_value_array_free() after usage.
*/
GValueArray *
gst_factory_list_filter (GValueArray * array, const GstCaps * caps)
{
GValueArray *result;
gint i;
result = g_value_array_new (0);
GST_DEBUG ("finding factories");
/* loop over all the factories */
for (i = 0; i < array->n_values; i++) {
GValue *value;
GstElementFactory *factory;
const GList *templates;
GList *walk;
value = g_value_array_get_nth (array, i);
factory = g_value_get_object (value);
/* get the templates from the element factory */
templates = gst_element_factory_get_static_pad_templates (factory);
for (walk = (GList *) templates; walk; walk = g_list_next (walk)) {
GstStaticPadTemplate *templ = walk->data;
/* we only care about the sink templates */
if (templ->direction == GST_PAD_SINK) {
GstCaps *intersect;
GstCaps *tmpl_caps;
/* try to intersect the caps with the caps of the template */
tmpl_caps = gst_static_caps_get (&templ->static_caps);
/* FIXME, intersect is not the right method, we ideally want to check
* for a subset here */
intersect = gst_caps_intersect (caps, tmpl_caps);
gst_caps_unref (tmpl_caps);
/* check if the intersection is empty */
if (!gst_caps_is_empty (intersect)) {
/* non empty intersection, we can use this element */
GValue resval = { 0, };
g_value_init (&resval, G_TYPE_OBJECT);
g_value_set_object (&resval, factory);
g_value_array_append (result, &resval);
g_value_unset (&resval);
gst_caps_unref (intersect);
break;
}
gst_caps_unref (intersect);
}
}
}
return result;
}
static GstCaps *
gst_alpha_color_transform_caps (GstBaseTransform * btrans,
GstPadDirection direction, GstCaps * caps, GstCaps * filter)
{
GstCaps *tmpl_caps = NULL;
GstCaps *result = NULL, *local_caps = NULL;
guint i;
local_caps = gst_caps_new_empty ();
for (i = 0; i < gst_caps_get_size (caps); i++) {
GstStructure *structure =
gst_structure_copy (gst_caps_get_structure (caps, i));
/* Remove any specific parameter from the structure */
gst_structure_remove_field (structure, "format");
gst_structure_remove_field (structure, "colorimetry");
gst_structure_remove_field (structure, "chroma-site");
gst_structure_set_name (structure, "video/x-raw");
gst_caps_append_structure (local_caps, structure);
}
/* Get the appropriate template */
if (direction == GST_PAD_SINK) {
tmpl_caps = gst_static_pad_template_get_caps (&src_template);
} else if (direction == GST_PAD_SRC) {
tmpl_caps = gst_static_pad_template_get_caps (&sink_template);
}
/* Intersect with our template caps */
result = gst_caps_intersect (local_caps, tmpl_caps);
gst_caps_unref (tmpl_caps);
gst_caps_unref (local_caps);
result = gst_caps_simplify (result);
GST_LOG_OBJECT (btrans, "transformed %" GST_PTR_FORMAT " to %" GST_PTR_FORMAT,
caps, result);
if (filter) {
GstCaps *intersection;
GST_DEBUG_OBJECT (btrans, "Using filter caps %" GST_PTR_FORMAT, filter);
intersection =
gst_caps_intersect_full (filter, result, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (result);
result = intersection;
GST_DEBUG_OBJECT (btrans, "Intersection %" GST_PTR_FORMAT, result);
}
return result;
}
static GstCaps *
gst_capsfilter_transform_caps (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps)
{
GstCapsFilter *capsfilter = GST_CAPSFILTER (base);
GstCaps *ret;
ret = gst_caps_intersect (caps, capsfilter->filter_caps);
return ret;
}
static MXFMetadataFileDescriptor *
mxf_up_get_rgba_descriptor (GstPadTemplate * tmpl, GstCaps * caps,
MXFEssenceElementWriteFunc * handler, gpointer * mapping_data)
{
MXFMetadataRGBAPictureEssenceDescriptor *ret;
guint i;
GstCaps *tmp, *intersection;
MXFUPMappingData *md = g_new0 (MXFUPMappingData, 1);
*mapping_data = md;
ret = (MXFMetadataRGBAPictureEssenceDescriptor *)
gst_mini_object_new (MXF_TYPE_METADATA_RGBA_PICTURE_ESSENCE_DESCRIPTOR);
for (i = 0; i < G_N_ELEMENTS (_rgba_mapping_table); i++) {
tmp = gst_caps_from_string (_rgba_mapping_table[i].caps);
intersection = gst_caps_intersect (caps, tmp);
gst_caps_unref (tmp);
if (!gst_caps_is_empty (intersection)) {
gst_caps_unref (intersection);
ret->n_pixel_layout = _rgba_mapping_table[i].n_pixel_layout;
ret->pixel_layout = g_new0 (guint8, ret->n_pixel_layout * 2);
md->fourcc = _rgba_mapping_table[i].fourcc;
md->bpp = _rgba_mapping_table[i].n_pixel_layout;
memcpy (ret->pixel_layout, _rgba_mapping_table[i].pixel_layout,
ret->n_pixel_layout * 2);
break;
}
gst_caps_unref (intersection);
}
if (md->fourcc == 0) {
GST_ERROR ("Invalid caps %" GST_PTR_FORMAT, caps);
gst_mini_object_unref (GST_MINI_OBJECT_CAST (ret));
return NULL;
}
memcpy (&ret->parent.parent.essence_container, &up_essence_container_ul, 16);
if (!mxf_metadata_generic_picture_essence_descriptor_from_caps (&ret->parent,
caps)) {
gst_mini_object_unref (GST_MINI_OBJECT_CAST (ret));
return NULL;
}
md->width = ret->parent.stored_width;
md->height = ret->parent.stored_height;
*handler = mxf_up_write_func;
return (MXFMetadataFileDescriptor *) ret;
}