static gboolean
gst_asf_parse_sink_activate (GstPad * sinkpad, GstObject * parent)
{
GstQuery *query;
gboolean pull_mode;
query = gst_query_new_scheduling ();
if (!gst_pad_peer_query (sinkpad, query)) {
gst_query_unref (query);
goto activate_push;
}
pull_mode = gst_query_has_scheduling_mode_with_flags (query,
GST_PAD_MODE_PULL, GST_SCHEDULING_FLAG_SEEKABLE);
gst_query_unref (query);
if (!pull_mode)
goto activate_push;
GST_DEBUG_OBJECT (sinkpad, "activating pull");
return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, TRUE);
activate_push:
{
GST_DEBUG_OBJECT (sinkpad, "activating push");
return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
}
}
static gboolean
gst_stream_combiner_src_query (GstPad * pad, GstObject * parent,
GstQuery * query)
{
GstStreamCombiner *stream_combiner = (GstStreamCombiner *) parent;
GstPad *sinkpad = NULL;
gboolean ret = FALSE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CAPS:
ret = gst_pad_query_default (pad, parent, query);
break;
default:
STREAMS_LOCK (stream_combiner);
if (stream_combiner->current)
sinkpad = stream_combiner->current;
else if (stream_combiner->sinkpads)
sinkpad = (GstPad *) stream_combiner->sinkpads->data;
STREAMS_UNLOCK (stream_combiner);
if (sinkpad)
/* Forward upstream as is */
ret = gst_pad_peer_query (sinkpad, query);
break;
}
return ret;
}
static gboolean
gst_hls_demux_sink_event (GstPad * pad, GstEvent * event)
{
GstHLSDemux *demux = GST_HLS_DEMUX (gst_pad_get_parent (pad));
GstQuery *query;
gboolean ret;
gchar *uri;
switch (event->type) {
case GST_EVENT_EOS:{
gchar *playlist;
if (demux->playlist == NULL) {
GST_WARNING_OBJECT (demux, "Received EOS without a playlist.");
break;
}
GST_DEBUG_OBJECT (demux,
"Got EOS on the sink pad: main playlist fetched");
query = gst_query_new_uri ();
ret = gst_pad_peer_query (demux->sinkpad, query);
if (ret) {
gst_query_parse_uri (query, &uri);
gst_hls_demux_set_location (demux, uri);
g_free (uri);
}
gst_query_unref (query);
playlist = gst_hls_src_buf_to_utf8_playlist ((gchar *)
GST_BUFFER_DATA (demux->playlist), GST_BUFFER_SIZE (demux->playlist));
gst_buffer_unref (demux->playlist);
if (playlist == NULL) {
GST_WARNING_OBJECT (demux, "Error validating first playlist.");
} else if (!gst_m3u8_client_update (demux->client, playlist)) {
/* In most cases, this will happen if we set a wrong url in the
* source element and we have received the 404 HTML response instead of
* the playlist */
GST_ELEMENT_ERROR (demux, STREAM, DECODE, ("Invalid playlist."), NULL);
return FALSE;
}
if (!ret && gst_m3u8_client_is_live (demux->client)) {
GST_ELEMENT_ERROR (demux, RESOURCE, NOT_FOUND,
("Failed querying the playlist uri, "
"required for live sources."), NULL);
return FALSE;
}
gst_task_start (demux->task);
gst_event_unref (event);
return TRUE;
}
default:
break;
}
return gst_pad_event_default (pad, event);
}
static gboolean
gst_stream_combiner_sink_query (GstPad * pad, GstObject * parent,
GstQuery * query)
{
GstStreamCombiner *stream_combiner = (GstStreamCombiner *) parent;
return gst_pad_peer_query (stream_combiner->srcpad, query);
}
/***********************************************************************************
* Query
***********************************************************************************/
static gboolean mpegts_demuxer_sink_query (GstPad *pad, GstObject *parent, GstQuery *query)
{
gboolean result = TRUE;
MpegTSDemuxer *demuxer = MPEGTS_DEMUXER(parent);
switch (GST_QUERY_TYPE(query))
{
case GST_QUERY_DURATION:
{
GstFormat format;
gst_query_parse_duration(query, &format, NULL);
if (format == GST_FORMAT_TIME)
result = gst_pad_peer_query(pad, query);
else if (format == GST_FORMAT_BYTES)
{
g_mutex_lock(&demuxer->lock);
int bit_rate = (demuxer->context != NULL) ? demuxer->context->bit_rate : 0;
g_mutex_unlock(&demuxer->lock);
if (bit_rate > 0)
{
gint64 duration = GST_CLOCK_TIME_NONE;
if (gst_pad_peer_query_duration(pad, GST_FORMAT_TIME, &duration))
{
// Approximate duration in bytes for a certain time duration and bit rate.
if (duration != GST_CLOCK_TIME_NONE)
duration = (double)(duration * bit_rate) / GST_SECOND / 8;
gst_query_set_duration(query, format, duration);
}
else
result = FALSE;
}
else
result = gst_pad_peer_query(pad, query);
}
break;
}
default:
result = gst_pad_peer_query(pad, query);
break;
}
return result;
}
static gboolean
gst_wayland_sink_find_display (GstWaylandSink * sink)
{
GstQuery *query;
GstMessage *msg;
GstContext *context = NULL;
GError *error = NULL;
gboolean ret = TRUE;
g_mutex_lock (&sink->display_lock);
if (!sink->display) {
/* first query upstream for the needed display handle */
query = gst_query_new_context (GST_WAYLAND_DISPLAY_HANDLE_CONTEXT_TYPE);
if (gst_pad_peer_query (GST_VIDEO_SINK_PAD (sink), query)) {
gst_query_parse_context (query, &context);
gst_wayland_sink_set_display_from_context (sink, context);
}
gst_query_unref (query);
if (G_LIKELY (!sink->display)) {
/* now ask the application to set the display handle */
msg = gst_message_new_need_context (GST_OBJECT_CAST (sink),
GST_WAYLAND_DISPLAY_HANDLE_CONTEXT_TYPE);
g_mutex_unlock (&sink->display_lock);
gst_element_post_message (GST_ELEMENT_CAST (sink), msg);
/* at this point we expect gst_wayland_sink_set_context
* to get called and fill sink->display */
g_mutex_lock (&sink->display_lock);
if (!sink->display) {
/* if the application didn't set a display, let's create it ourselves */
GST_OBJECT_LOCK (sink);
sink->display = gst_wl_display_new (sink->display_name, &error);
GST_OBJECT_UNLOCK (sink);
if (error) {
GST_ELEMENT_WARNING (sink, RESOURCE, OPEN_READ_WRITE,
("Could not initialise Wayland output"),
("Failed to create GstWlDisplay: '%s'", error->message));
g_error_free (error);
ret = FALSE;
} else {
/* inform the world about the new display */
context =
gst_wayland_display_handle_context_new (sink->display->display);
msg = gst_message_new_have_context (GST_OBJECT_CAST (sink), context);
gst_element_post_message (GST_ELEMENT_CAST (sink), msg);
}
}
}
}
g_mutex_unlock (&sink->display_lock);
return ret;
}
static gboolean
gst_goom_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
gboolean res = FALSE;
GstGoom *goom;
goom = GST_GOOM (parent);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_LATENCY:
{
/* We need to send the query upstream and add the returned latency to our
* own */
GstClockTime min_latency, max_latency;
gboolean us_live;
GstClockTime our_latency;
guint max_samples;
if (goom->rate == 0)
break;
if ((res = gst_pad_peer_query (goom->sinkpad, query))) {
gst_query_parse_latency (query, &us_live, &min_latency, &max_latency);
GST_DEBUG_OBJECT (goom, "Peer latency: min %"
GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
GST_TIME_ARGS (min_latency), GST_TIME_ARGS (max_latency));
/* the max samples we must buffer buffer */
max_samples = MAX (GOOM_SAMPLES, goom->spf);
our_latency =
gst_util_uint64_scale_int (max_samples, GST_SECOND, goom->rate);
GST_DEBUG_OBJECT (goom, "Our latency: %" GST_TIME_FORMAT,
GST_TIME_ARGS (our_latency));
/* we add some latency but only if we need to buffer more than what
* upstream gives us */
min_latency += our_latency;
if (max_latency != -1)
max_latency += our_latency;
GST_DEBUG_OBJECT (goom, "Calculated total latency : min %"
GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
GST_TIME_ARGS (min_latency), GST_TIME_ARGS (max_latency));
gst_query_set_latency (query, TRUE, min_latency, max_latency);
}
break;
}
default:
res = gst_pad_query_default (pad, parent, query);
break;
}
return res;
}
static gboolean
gst_audio_fx_base_fir_filter_query (GstBaseTransform * trans,
GstPadDirection direction, GstQuery * query)
{
GstAudioFXBaseFIRFilter *self = GST_AUDIO_FX_BASE_FIR_FILTER (trans);
gboolean res = TRUE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_LATENCY:
{
GstClockTime min, max;
gboolean live;
guint64 latency;
gint rate = GST_AUDIO_FILTER_RATE (self);
if (rate == 0) {
res = FALSE;
} else if ((res =
gst_pad_peer_query (GST_BASE_TRANSFORM (self)->sinkpad, query))) {
gst_query_parse_latency (query, &live, &min, &max);
GST_DEBUG_OBJECT (self, "Peer latency: min %"
GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
GST_TIME_ARGS (min), GST_TIME_ARGS (max));
if (self->fft && !self->low_latency)
latency = self->block_length - self->kernel_length + 1;
else
latency = self->latency;
/* add our own latency */
latency = gst_util_uint64_scale_round (latency, GST_SECOND, rate);
GST_DEBUG_OBJECT (self, "Our latency: %"
GST_TIME_FORMAT, GST_TIME_ARGS (latency));
min += latency;
if (max != GST_CLOCK_TIME_NONE)
max += latency;
GST_DEBUG_OBJECT (self, "Calculated total latency : min %"
GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
GST_TIME_ARGS (min), GST_TIME_ARGS (max));
gst_query_set_latency (query, live, min, max);
}
break;
}
default:
res =
GST_BASE_TRANSFORM_CLASS (parent_class)->query (trans, direction,
query);
break;
}
return res;
}
static gboolean
gst_rtp_jitter_buffer_query (GstPad * pad, GstQuery * query)
{
GstRtpJitterBuffer *jitterbuffer;
GstRtpJitterBufferPrivate *priv;
gboolean res = FALSE;
jitterbuffer = GST_RTP_JITTER_BUFFER (gst_pad_get_parent (pad));
priv = jitterbuffer->priv;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_LATENCY:
{
/* We need to send the query upstream and add the returned latency to our
* own */
GstClockTime min_latency, max_latency;
gboolean us_live;
GstClockTime our_latency;
if ((res = gst_pad_peer_query (priv->sinkpad, query))) {
gst_query_parse_latency (query, &us_live, &min_latency, &max_latency);
GST_DEBUG_OBJECT (jitterbuffer, "Peer latency: min %"
GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
GST_TIME_ARGS (min_latency), GST_TIME_ARGS (max_latency));
/* store this so that we can safely sync on the peer buffers. */
JBUF_LOCK (priv);
priv->peer_latency = min_latency;
our_latency = ((guint64) priv->latency_ms) * GST_MSECOND;
JBUF_UNLOCK (priv);
GST_DEBUG_OBJECT (jitterbuffer, "Our latency: %" GST_TIME_FORMAT,
GST_TIME_ARGS (our_latency));
/* we add some latency but can buffer an infinite amount of time */
min_latency += our_latency;
max_latency = -1;
GST_DEBUG_OBJECT (jitterbuffer, "Calculated total latency : min %"
GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
GST_TIME_ARGS (min_latency), GST_TIME_ARGS (max_latency));
gst_query_set_latency (query, TRUE, min_latency, max_latency);
}
break;
}
default:
res = gst_pad_query_default (pad, query);
break;
}
gst_object_unref (jitterbuffer);
return res;
}
static void
push_query (gpointer data, gpointer user_data)
{
GstHarness *h = user_data;
GstCaps *caps = gst_caps_new_empty_simple ("mycaps");
GstQuery *query = gst_query_new_allocation (caps, FALSE);
gst_caps_unref (caps);
gst_pad_peer_query (h->srcpad, query);
gst_query_unref (query);
}
static gboolean
gst_gdk_pixbuf_dec_setup_pool (GstGdkPixbufDec * filter, GstVideoInfo * info)
{
GstCaps *target;
GstQuery *query;
GstBufferPool *pool;
GstStructure *config;
guint size, min, max;
target = gst_pad_get_current_caps (filter->srcpad);
/* try to get a bufferpool now */
/* find a pool for the negotiated caps now */
query = gst_query_new_allocation (target, TRUE);
if (!gst_pad_peer_query (filter->srcpad, query)) {
/* not a problem, we use the query defaults */
GST_DEBUG_OBJECT (filter, "ALLOCATION query failed");
}
if (gst_query_get_n_allocation_pools (query) > 0) {
/* we got configuration from our peer, parse them */
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
} else {
pool = NULL;
size = info->size;
min = max = 0;
}
gst_query_unref (query);
if (pool == NULL) {
/* we did not get a pool, make one ourselves then */
pool = gst_buffer_pool_new ();
}
/* and configure */
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, target, size, min, max);
gst_buffer_pool_set_config (pool, config);
if (filter->pool) {
gst_buffer_pool_set_active (filter->pool, FALSE);
gst_object_unref (filter->pool);
}
filter->pool = pool;
/* and activate */
gst_buffer_pool_set_active (filter->pool, TRUE);
gst_caps_unref (target);
return TRUE;
}
static gboolean
gst_gl_base_mixer_do_bufferpool (GstGLBaseMixer * mix, GstCaps * outcaps)
{
GstQuery *query;
gboolean result = TRUE;
GstBufferPool *pool = NULL;
GstAllocator *allocator;
GstAllocationParams params;
GstAggregator *agg = GST_AGGREGATOR (mix);
/* find a pool for the negotiated caps now */
GST_DEBUG_OBJECT (mix, "doing allocation query");
query = gst_query_new_allocation (outcaps, TRUE);
if (!gst_pad_peer_query (agg->srcpad, query)) {
/* not a problem, just debug a little */
GST_DEBUG_OBJECT (mix, "peer ALLOCATION query failed");
}
GST_DEBUG_OBJECT (mix, "calling decide_allocation");
result = gst_gl_base_mixer_decide_allocation (mix, query);
GST_DEBUG_OBJECT (mix, "ALLOCATION (%d) params: %" GST_PTR_FORMAT, result,
query);
if (!result)
goto no_decide_allocation;
/* we got configuration from our peer or the decide_allocation method,
* parse them */
if (gst_query_get_n_allocation_params (query) > 0) {
gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
} else {
allocator = NULL;
gst_allocation_params_init (¶ms);
}
if (gst_query_get_n_allocation_pools (query) > 0)
gst_query_parse_nth_allocation_pool (query, 0, &pool, NULL, NULL, NULL);
/* now store */
result =
gst_gl_base_mixer_set_allocation (mix, pool, allocator, ¶ms, query);
return result;
/* Errors */
no_decide_allocation:
{
GST_WARNING_OBJECT (mix, "Failed to decide allocation");
gst_query_unref (query);
return result;
}
}
gboolean
gst_splitmux_part_reader_src_query (GstSplitMuxPartReader * part,
GstPad * src_pad, GstQuery * query)
{
GstPad *target = NULL;
gboolean ret;
GList *cur;
SPLITMUX_PART_LOCK (part);
/* Find the pad corresponding to the visible output target pad */
for (cur = g_list_first (part->pads); cur != NULL; cur = g_list_next (cur)) {
GstSplitMuxPartPad *part_pad = SPLITMUX_PART_PAD_CAST (cur->data);
if (part_pad->target == src_pad) {
target = gst_object_ref (GST_OBJECT_CAST (part_pad));
break;
}
}
SPLITMUX_PART_UNLOCK (part);
if (target == NULL)
return FALSE;
ret = gst_pad_peer_query (target, query);
gst_object_unref (GST_OBJECT_CAST (target));
if (ret == FALSE)
goto out;
/* Post-massaging of queries */
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:{
GstFormat fmt;
gint64 position;
gst_query_parse_position (query, &fmt, &position);
if (fmt != GST_FORMAT_TIME)
return FALSE;
SPLITMUX_PART_LOCK (part);
position += part->start_offset;
GST_LOG_OBJECT (part, "Position %" GST_TIME_FORMAT,
GST_TIME_ARGS (position));
SPLITMUX_PART_UNLOCK (part);
gst_query_set_position (query, fmt, position);
break;
}
default:
break;
}
out:
gst_object_unref (target);
return ret;
}
static gboolean
gst_compare_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
GstCompare *comp;
GstPad *otherpad;
comp = GST_COMPARE (parent);
otherpad = (pad == comp->srcpad ? comp->sinkpad : comp->srcpad);
return gst_pad_peer_query (otherpad, query);
}
static gboolean
gst_stream_splitter_src_query (GstPad * pad, GstObject * parent,
GstQuery * query)
{
GstStreamSplitter *stream_splitter = (GstStreamSplitter *) parent;
GST_DEBUG_OBJECT (pad, "%s", GST_QUERY_TYPE_NAME (query));
/* Forward upstream as is */
return gst_pad_peer_query (stream_splitter->sinkpad, query);
}
static gboolean
stereosplit_do_bufferpool (GstGLStereoSplit * self, GstCaps * caps)
{
GstQuery *query;
query = gst_query_new_allocation (caps, TRUE);
if (!gst_pad_peer_query (self->left_pad, query)) {
if (!gst_pad_peer_query (self->right_pad, query)) {
GST_DEBUG_OBJECT (self, "peer ALLOCATION query failed on both src pads");
}
}
if (!stereosplit_decide_allocation (self, query)) {
gst_query_unref (query);
return FALSE;
}
gst_query_unref (query);
return TRUE;
}
static void
gst_dvdec_negotiate_pool (GstDVDec * dec, GstCaps * caps, GstVideoInfo * info)
{
GstQuery *query;
GstBufferPool *pool;
guint size, min, max;
GstStructure *config;
/* find a pool for the negotiated caps now */
query = gst_query_new_allocation (caps, TRUE);
if (!gst_pad_peer_query (dec->srcpad, query)) {
GST_DEBUG_OBJECT (dec, "didn't get downstream ALLOCATION hints");
}
if (gst_query_get_n_allocation_pools (query) > 0) {
/* we got configuration from our peer, parse them */
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
size = MAX (size, info->size);
} else {
pool = NULL;
size = info->size;
min = max = 0;
}
if (pool == NULL) {
/* we did not get a pool, make one ourselves then */
pool = gst_video_buffer_pool_new ();
}
if (dec->pool) {
gst_buffer_pool_set_active (dec->pool, FALSE);
gst_object_unref (dec->pool);
}
dec->pool = pool;
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, min, max);
if (gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL)) {
/* just set the option, if the pool can support it we will transparently use
* it through the video info API. We could also see if the pool support this
* option and only activate it then. */
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
}
gst_buffer_pool_set_config (pool, config);
/* and activate */
gst_buffer_pool_set_active (pool, TRUE);
gst_query_unref (query);
}
static GstFlowReturn
gst_rtp_vraw_depay_negotiate_pool (GstRtpVRawDepay * depay, GstCaps * caps,
GstVideoInfo * info)
{
GstQuery *query;
GstBufferPool *pool = NULL;
guint size, min, max;
GstStructure *config;
/* find a pool for the negotiated caps now */
query = gst_query_new_allocation (caps, TRUE);
if (!gst_pad_peer_query (GST_RTP_BASE_DEPAYLOAD_SRCPAD (depay), query)) {
/* not a problem, we use the defaults of query */
GST_DEBUG_OBJECT (depay, "could not get downstream ALLOCATION hints");
}
if (gst_query_get_n_allocation_pools (query) > 0) {
/* we got configuration from our peer, parse them */
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
} else {
GST_DEBUG_OBJECT (depay, "didn't get downstream pool hints");
size = info->size;
min = max = 0;
}
if (pool == NULL) {
/* we did not get a pool, make one ourselves then */
pool = gst_video_buffer_pool_new ();
}
if (depay->pool)
gst_object_unref (depay->pool);
depay->pool = pool;
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, min, max);
if (gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL)) {
/* just set the metadata, if the pool can support it we will transparently use
* it through the video info API. We could also see if the pool support this
* metadata and only activate it then. */
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
}
gst_buffer_pool_set_config (pool, config);
/* and activate */
gst_buffer_pool_set_active (pool, TRUE);
gst_query_unref (query);
return GST_FLOW_OK;
}
static gboolean
gst_y4m_dec_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
GstY4mDec *y4mdec = GST_Y4M_DEC (parent);
gboolean res = FALSE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_DURATION:
{
GstFormat format;
GstQuery *peer_query;
GST_DEBUG ("duration query");
gst_query_parse_duration (query, &format, NULL);
if (format != GST_FORMAT_TIME) {
res = FALSE;
GST_DEBUG_OBJECT (y4mdec, "not handling duration query in format %d",
format);
break;
}
peer_query = gst_query_new_duration (GST_FORMAT_BYTES);
res = gst_pad_peer_query (y4mdec->sinkpad, peer_query);
if (res) {
gint64 duration;
int n_frames;
gst_query_parse_duration (peer_query, &format, &duration);
n_frames = gst_y4m_dec_bytes_to_frames (y4mdec, duration);
GST_DEBUG ("duration in frames %d", n_frames);
duration = gst_y4m_dec_frames_to_timestamp (y4mdec, n_frames);
GST_DEBUG ("duration in time %" GST_TIME_FORMAT,
GST_TIME_ARGS (duration));
gst_query_set_duration (query, GST_FORMAT_TIME, duration);
res = TRUE;
}
gst_query_unref (peer_query);
break;
}
default:
res = gst_pad_query_default (pad, parent, query);
break;
}
return res;
}
static gboolean
context_pad_query (const GValue * item, GValue * value, gpointer user_data)
{
GstPad *const pad = g_value_get_object (item);
GstQuery *const query = user_data;
if (gst_pad_peer_query (pad, query)) {
g_value_set_boolean (value, TRUE);
return FALSE;
}
_init_context_debug ();
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, pad, "context pad peer query failed");
return TRUE;
}
static void
query_upstream_latency (MpegTSBase * base)
{
GstQuery *query;
query = gst_query_new_latency ();
if (gst_pad_peer_query (base->sinkpad, query)) {
gst_query_parse_latency (query, &base->upstream_live, NULL, NULL);
GST_DEBUG_OBJECT (base, "Upstream is %s",
base->upstream_live ? "LIVE" : "NOT LIVE");
} else
GST_WARNING_OBJECT (base, "Failed to query upstream latency");
gst_query_unref (query);
base->queried_latency = TRUE;
}
static gboolean progress_buffer_checkgetrange(GstPad *pad)
{
ProgressBuffer *element = PROGRESS_BUFFER(GST_PAD_PARENT(pad));
#if ENABLE_PULL_MODE
gboolean result = FALSE;
GstStructure *s = gst_structure_new(GETRANGE_QUERY_NAME, NULL, NULL);
GstQuery *query = gst_query_new_custom(GST_QUERY_CUSTOM, s);
if (gst_pad_peer_query(pad, query))
result = gst_structure_get_boolean(s, GETRANGE_QUERY_SUPPORTS_FIELDNANE, &result) && result;
// INLINE - gst_query_unref()
gst_query_unref(query);
return result;
#else
return gst_pad_check_pull_range(element->sinkpad);
#endif
}
static gboolean
gst_segment_clip_query (GstPad * pad, GstQuery * query)
{
GstSegmentClip *self = GST_SEGMENT_CLIP (gst_pad_get_parent (pad));
gboolean ret;
GstPad *otherpad;
otherpad = (pad == self->srcpad) ? self->sinkpad : self->srcpad;
GST_LOG_OBJECT (pad, "Handling query of type '%s'",
gst_query_type_get_name (GST_QUERY_TYPE (query)));
ret = gst_pad_peer_query (otherpad, query);
gst_object_unref (self);
return ret;
}
static gboolean
gst_jp2k_decimator_query (GstPad * pad, GstQuery * query)
{
GstJP2kDecimator *self = GST_JP2K_DECIMATOR (gst_pad_get_parent (pad));
gboolean ret;
GstPad *otherpad;
otherpad = (pad == self->srcpad) ? self->sinkpad : self->srcpad;
GST_LOG_OBJECT (pad, "Handling query of type '%s'",
gst_query_type_get_name (GST_QUERY_TYPE (query)));
ret = gst_pad_peer_query (otherpad, query);
gst_object_unref (self);
return ret;
}
static gboolean
gst_tee_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
GstTee *tee;
gboolean res;
GstPad *sinkpad;
tee = GST_TEE (parent);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_SCHEDULING:
{
gboolean pull_mode;
GST_OBJECT_LOCK (tee);
pull_mode = TRUE;
if (tee->pull_mode == GST_TEE_PULL_MODE_NEVER) {
GST_INFO_OBJECT (tee, "Cannot activate in pull mode, pull-mode "
"set to NEVER");
pull_mode = FALSE;
} else if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE && tee->pull_pad) {
GST_INFO_OBJECT (tee, "Cannot activate multiple src pads in pull mode, "
"pull-mode set to SINGLE");
pull_mode = FALSE;
}
sinkpad = gst_object_ref (tee->sinkpad);
GST_OBJECT_UNLOCK (tee);
if (pull_mode) {
/* ask peer if we can operate in pull mode */
res = gst_pad_peer_query (sinkpad, query);
} else {
res = TRUE;
}
gst_object_unref (sinkpad);
break;
}
default:
res = gst_pad_query_default (pad, parent, query);
break;
}
return res;
}
static gboolean
gst_output_selector_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
gboolean res = TRUE;
GstOutputSelector *sel;
GstPad *active = NULL;
sel = GST_OUTPUT_SELECTOR (parent);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CAPS:
{
switch (sel->pad_negotiation_mode) {
case GST_OUTPUT_SELECTOR_PAD_NEGOTIATION_MODE_ALL:
/* Send caps to all src pads */
res = gst_pad_proxy_query_caps (pad, query);
break;
case GST_OUTPUT_SELECTOR_PAD_NEGOTIATION_MODE_NONE:
res = FALSE;
break;
default:
active = gst_output_selector_get_active (sel);
if (active) {
res = gst_pad_peer_query (active, query);
gst_object_unref (active);
} else {
res = FALSE;
}
break;
}
break;
}
case GST_QUERY_DRAIN:
if (sel->latest_buffer) {
gst_buffer_unref (sel->latest_buffer);
sel->latest_buffer = NULL;
}
/* fall through */
default:
res = gst_pad_query_default (pad, parent, query);
break;
}
return res;
}
static gboolean
gst_stream_synchronizer_query (GstPad * pad, GstObject * parent,
GstQuery * query)
{
GstPad *opad;
gboolean ret = FALSE;
GST_LOG_OBJECT (pad, "Handling query %s", GST_QUERY_TYPE_NAME (query));
opad =
gst_stream_get_other_pad_from_pad (GST_STREAM_SYNCHRONIZER (parent), pad);
if (opad) {
ret = gst_pad_peer_query (opad, query);
gst_object_unref (opad);
}
return ret;
}
static gpointer
thread_func (gpointer data)
{
int i = 0;
for (i = 0; i < 100; i++) {
GstCaps *caps;
GstQuery *query;
gboolean ok;
caps = gst_caps_new_any ();
query = gst_query_new_allocation (caps, FALSE);
ok = gst_pad_peer_query (mysrcpad, query);
gst_query_unref (query);
gst_caps_unref (caps);
query = NULL;
caps = NULL;
if (!ok)
break;
}
return NULL;
}
static gboolean
gst_raw_parse_sink_activate (GstPad * sinkpad, GstObject * parent)
{
GstQuery *query;
gboolean pull_mode = FALSE;
query = gst_query_new_scheduling ();
if (gst_pad_peer_query (sinkpad, query))
pull_mode = gst_query_has_scheduling_mode_with_flags (query,
GST_PAD_MODE_PULL, GST_SCHEDULING_FLAG_SEEKABLE);
gst_query_unref (query);
if (pull_mode) {
GST_DEBUG ("going to pull mode");
return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, TRUE);
} else {
GST_DEBUG ("going to push (streaming) mode");
return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
}
}
static gboolean
gst_rtp_ssrc_demux_src_query (GstPad * pad, GstObject * parent,
GstQuery * query)
{
GstRtpSsrcDemux *demux;
gboolean res = FALSE;
demux = GST_RTP_SSRC_DEMUX (parent);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_LATENCY:
{
if ((res = gst_pad_peer_query (demux->rtp_sink, query))) {
gboolean live;
GstClockTime min_latency, max_latency;
GstRtpSsrcDemuxPad *demuxpad;
demuxpad = gst_pad_get_element_private (pad);
gst_query_parse_latency (query, &live, &min_latency, &max_latency);
GST_DEBUG_OBJECT (demux, "peer min latency %" GST_TIME_FORMAT,
GST_TIME_ARGS (min_latency));
GST_DEBUG_OBJECT (demux, "latency for SSRC %08x", demuxpad->ssrc);
gst_query_set_latency (query, live, min_latency, max_latency);
}
break;
}
default:
res = gst_pad_query_default (pad, parent, query);
break;
}
return res;
}
