--- /dev/null
+/* Generic video aggregator plugin
+ * Copyright (C) 2004, 2008 Wim Taymans <wim@fluendo.com>
+ * Copyright (C) 2010 Sebastian Dröge <sebastian.droege@collabora.co.uk>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+/**
+ * SECTION:gstvideoaggregator
+ * @short_description: Base class for video aggregators
+ *
+ * VideoAggregator can accept AYUV, ARGB and BGRA video streams. For each of the requested
+ * sink pads it will compare the incoming geometry and framerate to define the
+ * output parameters. Indeed output video frames will have the geometry of the
+ * biggest incoming video stream and the framerate of the fastest incoming one.
+ *
+ * VideoAggregator will do colorspace conversion.
+ *
+ * Zorder for each input stream can be configured on the
+ * #GstVideoAggregatorPad.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "gstvideoaggregator.h"
+#include "gstvideoaggregatorpad.h"
+#include "videoconvert.h"
+
+GST_DEBUG_CATEGORY_STATIC (gst_videoaggregator_debug);
+#define GST_CAT_DEFAULT gst_videoaggregator_debug
+
+/* Needed prototypes */
+static void gst_videoaggregator_reset_qos (GstVideoAggregator * vagg);
+
+/****************************************
+ * GstVideoAggregatorPad implementation *
+ ****************************************/
+
+#define DEFAULT_PAD_ZORDER 0
+enum
+{
+ PROP_PAD_0,
+ PROP_PAD_ZORDER,
+};
+
+G_DEFINE_TYPE (GstVideoAggregatorPad, gst_videoaggregator_pad,
+ GST_TYPE_AGGREGATOR_PAD);
+
+static void
+gst_videoaggregator_pad_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (object);
+
+ switch (prop_id) {
+ case PROP_PAD_ZORDER:
+ g_value_set_uint (value, pad->zorder);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static int
+pad_zorder_compare (const GstVideoAggregatorPad * pad1,
+ const GstVideoAggregatorPad * pad2)
+{
+ return pad1->zorder - pad2->zorder;
+}
+
+static void
+gst_videoaggregator_pad_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (object);
+ GstVideoAggregator *vagg =
+ GST_VIDEO_AGGREGATOR (gst_pad_get_parent (GST_PAD (pad)));
+
+ switch (prop_id) {
+ case PROP_PAD_ZORDER:
+ GST_OBJECT_LOCK (vagg);
+ pad->zorder = g_value_get_uint (value);
+ GST_ELEMENT (vagg)->sinkpads = g_list_sort (GST_ELEMENT (vagg)->sinkpads,
+ (GCompareFunc) pad_zorder_compare);
+ GST_OBJECT_UNLOCK (vagg);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+
+ gst_object_unref (vagg);
+}
+
+static gboolean
+_flush_pad (GstAggregatorPad * aggpad, GstAggregator * aggregator)
+{
+ GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (aggregator);
+ GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (aggpad);
+
+ gst_videoaggregator_reset_qos (vagg);
+ gst_buffer_replace (&pad->buffer, NULL);
+ pad->start_time = -1;
+ pad->end_time = -1;
+
+ return TRUE;
+}
+
+static void
+gst_videoaggregator_pad_finalize (GObject * o)
+{
+ GstVideoAggregatorPad *vaggpad = GST_VIDEO_AGGREGATOR_PAD (o);
+
+ if (vaggpad->convert)
+ videoconvert_convert_free (vaggpad->convert);
+ vaggpad->convert = NULL;
+
+ G_OBJECT_CLASS (gst_videoaggregator_pad_parent_class)->dispose (o);
+}
+
+static void
+gst_videoaggregator_pad_class_init (GstVideoAggregatorPadClass * klass)
+{
+ GObjectClass *gobject_class = (GObjectClass *) klass;
+ GstAggregatorPadClass *aggpadclass = (GstAggregatorPadClass *) klass;
+
+ gobject_class->set_property = gst_videoaggregator_pad_set_property;
+ gobject_class->get_property = gst_videoaggregator_pad_get_property;
+ gobject_class->finalize = gst_videoaggregator_pad_finalize;
+
+ g_object_class_install_property (gobject_class, PROP_PAD_ZORDER,
+ g_param_spec_uint ("zorder", "Z-Order", "Z Order of the picture",
+ 0, 10000, DEFAULT_PAD_ZORDER,
+ G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS));
+
+ aggpadclass->flush = GST_DEBUG_FUNCPTR (_flush_pad);
+}
+
+static void
+gst_videoaggregator_pad_init (GstVideoAggregatorPad * vaggpad)
+{
+ vaggpad->zorder = DEFAULT_PAD_ZORDER;
+ vaggpad->convert = NULL;
+ vaggpad->need_conversion_update = FALSE;
+ vaggpad->aggregated_frame = NULL;
+ vaggpad->converted_buffer = NULL;
+}
+
+/*********************************
+ * GstChildProxy implementation *
+ *********************************/
+static GObject *
+gst_videoaggregator_child_proxy_get_child_by_index (GstChildProxy * child_proxy,
+ guint index)
+{
+ GObject *obj;
+ GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (child_proxy);
+
+ GST_OBJECT_LOCK (vagg);
+ if ((obj = g_list_nth_data (GST_ELEMENT (vagg)->sinkpads, index)))
+ g_object_ref (obj);
+ GST_OBJECT_UNLOCK (vagg);
+
+ return obj;
+}
+
+static guint
+gst_videoaggregator_child_proxy_get_children_count (GstChildProxy * child_proxy)
+{
+ guint count = 0;
+
+ GST_OBJECT_LOCK (child_proxy);
+ count = GST_ELEMENT (child_proxy)->numsinkpads;
+ GST_OBJECT_UNLOCK (child_proxy);
+
+ GST_INFO_OBJECT (child_proxy, "Children Count: %d", count);
+
+ return count;
+}
+
+static void
+gst_videoaggregator_child_proxy_init (gpointer g_iface, gpointer iface_data)
+{
+ GstChildProxyInterface *iface = g_iface;
+
+ GST_INFO ("intializing child proxy interface");
+ iface->get_child_by_index =
+ gst_videoaggregator_child_proxy_get_child_by_index;
+ iface->get_children_count =
+ gst_videoaggregator_child_proxy_get_children_count;
+}
+
+/**************************************
+ * GstVideoAggregator implementation *
+ **************************************/
+
+#define GST_VIDEO_AGGREGATOR_GET_LOCK(vagg) (&GST_VIDEO_AGGREGATOR(vagg)->priv->lock)
+
+#define GST_VIDEO_AGGREGATOR_LOCK(vagg) G_STMT_START { \
+ GST_LOG_OBJECT (vagg, "Taking EVENT lock from thread %p", \
+ g_thread_self()); \
+ g_mutex_lock(GST_VIDEO_AGGREGATOR_GET_LOCK(vagg)); \
+ GST_LOG_OBJECT (vagg, "Took EVENT lock from thread %p", \
+ g_thread_self()); \
+ } G_STMT_END
+
+#define GST_VIDEO_AGGREGATOR_UNLOCK(vagg) G_STMT_START { \
+ GST_LOG_OBJECT (vagg, "Releasing EVENT lock from thread %p", \
+ g_thread_self()); \
+ g_mutex_unlock(GST_VIDEO_AGGREGATOR_GET_LOCK(vagg)); \
+ GST_LOG_OBJECT (vagg, "Took EVENT lock from thread %p", \
+ g_thread_self()); \
+ } G_STMT_END
+
+
+#define GST_VIDEO_AGGREGATOR_GET_SETCAPS_LOCK(vagg) (&GST_VIDEO_AGGREGATOR(vagg)->priv->setcaps_lock)
+#define GST_VIDEO_AGGREGATOR_SETCAPS_LOCK(vagg) G_STMT_START { \
+ GST_LOG_OBJECT (vagg, "Taking SETCAPS lock from thread %p", \
+ g_thread_self()); \
+ g_mutex_lock(GST_VIDEO_AGGREGATOR_GET_SETCAPS_LOCK(vagg)); \
+ GST_LOG_OBJECT (vagg, "Took SETCAPS lock from thread %p", \
+ g_thread_self()); \
+ } G_STMT_END
+
+#define GST_VIDEO_AGGREGATOR_SETCAPS_UNLOCK(vagg) G_STMT_START { \
+ GST_LOG_OBJECT (vagg, "Releasing SETCAPS lock from thread %p", \
+ g_thread_self()); \
+ g_mutex_unlock(GST_VIDEO_AGGREGATOR_GET_SETCAPS_LOCK(vagg)); \
+ GST_LOG_OBJECT (vagg, "Took SETCAPS lock from thread %p", \
+ g_thread_self()); \
+ } G_STMT_END
+
+struct _GstVideoAggregatorPrivate
+{
+ /* Lock to prevent the state to change while aggregating */
+ GMutex lock;
+
+ /* Lock to prevent two src setcaps from happening at the same time */
+ GMutex setcaps_lock;
+
+ /* Current downstream segment */
+ GstClockTime ts_offset;
+ guint64 nframes;
+
+ /* QoS stuff */
+ gdouble proportion;
+ GstClockTime earliest_time;
+ guint64 qos_processed, qos_dropped;
+
+ /* current caps */
+ GstCaps *current_caps;
+ gboolean send_caps;
+};
+
+G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GstVideoAggregator, gst_videoaggregator,
+ GST_TYPE_AGGREGATOR, G_IMPLEMENT_INTERFACE (GST_TYPE_CHILD_PROXY,
+ gst_videoaggregator_child_proxy_init));
+
+static void
+_find_best_video_format (GstVideoAggregator * vagg, GstCaps * downstream_caps,
+ GstVideoInfo * best_info, GstVideoFormat * best_format,
+ gboolean * at_least_one_alpha)
+{
+ GList *tmp;
+ GstCaps *possible_caps;
+ GstVideoAggregatorPad *pad;
+ gboolean need_alpha = FALSE;
+ gint best_format_number = 0;
+ GHashTable *formats_table = g_hash_table_new (g_direct_hash, g_direct_equal);
+
+ GST_OBJECT_LOCK (vagg);
+ for (tmp = GST_ELEMENT (vagg)->sinkpads; tmp; tmp = tmp->next) {
+ GstStructure *s;
+ gint format_number;
+
+ pad = tmp->data;
+
+ if (!pad->info.finfo)
+ continue;
+
+ if (pad->info.finfo->flags & GST_VIDEO_FORMAT_FLAG_ALPHA)
+ *at_least_one_alpha = TRUE;
+
+ /* If we want alpha, disregard all the other formats */
+ if (need_alpha && !(pad->info.finfo->flags & GST_VIDEO_FORMAT_FLAG_ALPHA))
+ continue;
+
+ /* This can happen if we release a pad and another pad hasn't been negotiated_caps yet */
+ if (GST_VIDEO_INFO_FORMAT (&pad->info) == GST_VIDEO_FORMAT_UNKNOWN)
+ continue;
+
+ possible_caps = gst_video_info_to_caps (&pad->info);
+
+ s = gst_caps_get_structure (possible_caps, 0);
+ gst_structure_remove_fields (s, "width", "height", "framerate",
+ "pixel-aspect-ratio", "interlace-mode", NULL);
+
+ /* Can downstream accept this format ? */
+ if (!gst_caps_can_intersect (downstream_caps, possible_caps)) {
+ gst_caps_unref (possible_caps);
+ continue;
+ }
+
+ gst_caps_unref (possible_caps);
+
+ format_number =
+ GPOINTER_TO_INT (g_hash_table_lookup (formats_table,
+ GINT_TO_POINTER (GST_VIDEO_INFO_FORMAT (&pad->info))));
+ format_number += 1;
+
+ g_hash_table_replace (formats_table,
+ GINT_TO_POINTER (GST_VIDEO_INFO_FORMAT (&pad->info)),
+ GINT_TO_POINTER (format_number));
+
+ /* If that pad is the first with alpha, set it as the new best format */
+ if (!need_alpha && (pad->info.finfo->flags & GST_VIDEO_FORMAT_FLAG_ALPHA)) {
+ need_alpha = TRUE;
+ *best_format = GST_VIDEO_INFO_FORMAT (&pad->info);
+ *best_info = pad->info;
+ best_format_number = format_number;
+ } else if (format_number > best_format_number) {
+ *best_format = GST_VIDEO_INFO_FORMAT (&pad->info);
+ *best_info = pad->info;
+ best_format_number = format_number;
+ }
+ }
+ GST_OBJECT_UNLOCK (vagg);
+
+ g_hash_table_unref (formats_table);
+}
+
+static gboolean
+gst_videoaggregator_update_converters (GstVideoAggregator * vagg)
+{
+ GList *tmp;
+ GstVideoAggregatorPad *pad;
+ GstVideoFormat best_format;
+ GstVideoInfo best_info;
+ gboolean at_least_one_alpha = FALSE;
+ GstCaps *downstream_caps;
+ gchar *best_colorimetry;
+ const gchar *best_chroma;
+ GstElementClass *klass = GST_ELEMENT_GET_CLASS (vagg);
+ GstVideoAggregatorClass *vagg_klass = (GstVideoAggregatorClass *) klass;
+ GstAggregator *agg = GST_AGGREGATOR (vagg);
+
+ best_format = GST_VIDEO_FORMAT_UNKNOWN;
+ gst_video_info_init (&best_info);
+
+ downstream_caps = gst_pad_get_allowed_caps (agg->srcpad);
+
+ if (!downstream_caps || gst_caps_is_empty (downstream_caps)) {
+ GST_INFO_OBJECT (vagg, "No downstream caps found %"
+ GST_PTR_FORMAT, downstream_caps);
+ return FALSE;
+ }
+
+
+ if (vagg_klass->disable_frame_conversion == FALSE)
+ _find_best_video_format (vagg, downstream_caps, &best_info, &best_format,
+ &at_least_one_alpha);
+
+ if (best_format == GST_VIDEO_FORMAT_UNKNOWN) {
+ downstream_caps = gst_caps_fixate (downstream_caps);
+ gst_video_info_from_caps (&best_info, downstream_caps);
+ best_format = GST_VIDEO_INFO_FORMAT (&best_info);
+ }
+
+ gst_caps_unref (downstream_caps);
+
+ if (at_least_one_alpha
+ && !(best_info.finfo->flags & GST_VIDEO_FORMAT_FLAG_ALPHA)) {
+ GST_ELEMENT_ERROR (vagg, CORE, NEGOTIATION,
+ ("At least one of the input pads contains alpha, but downstream can't support alpha."),
+ ("Either convert your inputs to not contain alpha or add a videoconvert after the aggregator"));
+ return FALSE;
+ }
+
+ best_colorimetry = gst_video_colorimetry_to_string (&(best_info.colorimetry));
+ best_chroma = gst_video_chroma_to_string (best_info.chroma_site);
+ vagg->info = best_info;
+
+ GST_DEBUG_OBJECT (vagg,
+ "The output format will now be : %d with colorimetry : %s and chroma : %s",
+ best_format, best_colorimetry, best_chroma);
+
+ /* Then browse the sinks once more, setting or unsetting conversion if needed */
+ GST_OBJECT_LOCK (vagg);
+ for (tmp = GST_ELEMENT (vagg)->sinkpads; tmp; tmp = tmp->next) {
+ gchar *colorimetry;
+ const gchar *chroma;
+
+ pad = tmp->data;
+
+ if (!pad->info.finfo)
+ continue;
+
+ if (GST_VIDEO_INFO_FORMAT (&pad->info) == GST_VIDEO_FORMAT_UNKNOWN)
+ continue;
+
+ if (pad->convert)
+ videoconvert_convert_free (pad->convert);
+
+ pad->convert = NULL;
+
+ colorimetry = gst_video_colorimetry_to_string (&(pad->info.colorimetry));
+ chroma = gst_video_chroma_to_string (pad->info.chroma_site);
+
+ if (best_format != GST_VIDEO_INFO_FORMAT (&pad->info) ||
+ g_strcmp0 (colorimetry, best_colorimetry) ||
+ g_strcmp0 (chroma, best_chroma)) {
+ GST_DEBUG_OBJECT (pad, "This pad will be converted from %d to %d",
+ GST_VIDEO_INFO_FORMAT (&pad->info),
+ GST_VIDEO_INFO_FORMAT (&best_info));
+ pad->convert = videoconvert_convert_new (&pad->info, &best_info);
+ pad->need_conversion_update = TRUE;
+ if (!pad->convert) {
+ g_free (colorimetry);
+ g_free (best_colorimetry);
+ GST_WARNING ("No path found for conversion");
+ GST_OBJECT_UNLOCK (vagg);
+ return FALSE;
+ }
+ } else {
+ GST_DEBUG_OBJECT (pad, "This pad will not need conversion");
+ }
+ g_free (colorimetry);
+ }
+ GST_OBJECT_UNLOCK (vagg);
+
+ g_free (best_colorimetry);
+ return TRUE;
+}
+
+static gboolean
+gst_videoaggregator_src_setcaps (GstVideoAggregator * vagg, GstCaps * caps)
+{
+ GstAggregator *agg = GST_AGGREGATOR (vagg);
+ gboolean ret = FALSE;
+ GstVideoInfo info;
+
+ GstPad *pad = GST_AGGREGATOR (vagg)->srcpad;
+
+ GST_INFO_OBJECT (pad, "set src caps: %" GST_PTR_FORMAT, caps);
+
+ if (!gst_video_info_from_caps (&info, caps))
+ goto done;
+
+ ret = TRUE;
+
+ GST_VIDEO_AGGREGATOR_LOCK (vagg);
+
+ if (GST_VIDEO_INFO_FPS_N (&vagg->info) != GST_VIDEO_INFO_FPS_N (&info) ||
+ GST_VIDEO_INFO_FPS_D (&vagg->info) != GST_VIDEO_INFO_FPS_D (&info)) {
+ if (agg->segment.position != -1) {
+ vagg->priv->ts_offset = agg->segment.position - agg->segment.start;
+ vagg->priv->nframes = 0;
+ }
+ gst_videoaggregator_reset_qos (vagg);
+ }
+
+ vagg->info = info;
+
+ GST_VIDEO_AGGREGATOR_UNLOCK (vagg);
+
+ if (vagg->priv->current_caps == NULL ||
+ gst_caps_is_equal (caps, vagg->priv->current_caps) == FALSE) {
+ gst_caps_replace (&vagg->priv->current_caps, caps);
+ vagg->priv->send_caps = TRUE;
+ }
+
+done:
+ return ret;
+}
+
+static gboolean
+gst_videoaggregator_update_src_caps (GstVideoAggregator * vagg)
+{
+ GList *l;
+ gint best_width = -1, best_height = -1;
+ gdouble best_fps = -1, cur_fps;
+ gint best_fps_n = -1, best_fps_d = -1;
+ gboolean ret = TRUE;
+ GstElementClass *klass = GST_ELEMENT_GET_CLASS (vagg);
+ GstVideoAggregatorClass *vagg_klass = (GstVideoAggregatorClass *) klass;
+ GstAggregator *agg = GST_AGGREGATOR (vagg);
+
+ GST_VIDEO_AGGREGATOR_SETCAPS_LOCK (vagg);
+ GST_VIDEO_AGGREGATOR_LOCK (vagg);
+ GST_OBJECT_LOCK (vagg);
+ for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) {
+ GstVideoAggregatorPad *mpad = l->data;
+ gint this_width, this_height;
+ gint fps_n, fps_d;
+ gint width, height;
+
+ fps_n = GST_VIDEO_INFO_FPS_N (&mpad->info);
+ fps_d = GST_VIDEO_INFO_FPS_D (&mpad->info);
+ width = GST_VIDEO_INFO_WIDTH (&mpad->info);
+ height = GST_VIDEO_INFO_HEIGHT (&mpad->info);
+
+ if (width == 0 || height == 0)
+ continue;
+
+ this_width = width;
+ this_height = height;
+
+ if (best_width < this_width)
+ best_width = this_width;
+ if (best_height < this_height)
+ best_height = this_height;
+
+ if (fps_d == 0)
+ cur_fps = 0.0;
+ else
+ gst_util_fraction_to_double (fps_n, fps_d, &cur_fps);
+
+ if (best_fps < cur_fps) {
+ best_fps = cur_fps;
+ best_fps_n = fps_n;
+ best_fps_d = fps_d;
+ }
+ }
+ GST_OBJECT_UNLOCK (vagg);
+
+ if (best_fps_n <= 0 || best_fps_d <= 0 || best_fps == 0.0) {
+ best_fps_n = 25;
+ best_fps_d = 1;
+ best_fps = 25.0;
+ }
+
+ if (best_width > 0 && best_height > 0 && best_fps > 0) {
+ GstCaps *caps, *peercaps;
+ GstStructure *s;
+ GstVideoInfo info;
+
+ if (GST_VIDEO_INFO_FPS_N (&vagg->info) != best_fps_n ||
+ GST_VIDEO_INFO_FPS_D (&vagg->info) != best_fps_d) {
+ if (agg->segment.position != -1) {
+ vagg->priv->ts_offset = agg->segment.position - agg->segment.start;
+ vagg->priv->nframes = 0;
+ }
+ }
+ gst_video_info_init (&info);
+ gst_video_info_set_format (&info, GST_VIDEO_INFO_FORMAT (&vagg->info),
+ best_width, best_height);
+ info.fps_n = best_fps_n;
+ info.fps_d = best_fps_d;
+ info.par_n = GST_VIDEO_INFO_PAR_N (&vagg->info);
+ info.par_d = GST_VIDEO_INFO_PAR_D (&vagg->info);
+
+ if (vagg_klass->update_info) {
+ if (!vagg_klass->update_info (vagg, &info)) {
+ ret = FALSE;
+ GST_VIDEO_AGGREGATOR_UNLOCK (vagg);
+ goto done;
+ }
+ }
+
+ caps = gst_video_info_to_caps (&info);
+
+ peercaps = gst_pad_peer_query_caps (agg->srcpad, NULL);
+ if (peercaps) {
+ GstCaps *tmp;
+
+ s = gst_caps_get_structure (caps, 0);
+ gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT, "height",
+ GST_TYPE_INT_RANGE, 1, G_MAXINT, "framerate", GST_TYPE_FRACTION_RANGE,
+ 0, 1, G_MAXINT, 1, NULL);
+
+ tmp = gst_caps_intersect (caps, peercaps);
+ gst_caps_unref (caps);
+ gst_caps_unref (peercaps);
+ caps = tmp;
+ if (gst_caps_is_empty (caps)) {
+ GST_DEBUG_OBJECT (vagg, "empty caps");
+ ret = FALSE;
+ GST_VIDEO_AGGREGATOR_UNLOCK (vagg);
+ GST_OBJECT_UNLOCK (vagg);
+ goto done;
+ }
+
+ caps = gst_caps_truncate (caps);
+ s = gst_caps_get_structure (caps, 0);
+ gst_structure_fixate_field_nearest_int (s, "width", info.width);
+ gst_structure_fixate_field_nearest_int (s, "height", info.height);
+ gst_structure_fixate_field_nearest_fraction (s, "framerate", best_fps_n,
+ best_fps_d);
+
+ gst_structure_get_int (s, "width", &info.width);
+ gst_structure_get_int (s, "height", &info.height);
+ gst_structure_get_fraction (s, "framerate", &info.fps_n, &info.fps_d);
+ }
+
+ gst_caps_unref (caps);
+ caps = gst_video_info_to_caps (&info);
+
+ GST_VIDEO_AGGREGATOR_UNLOCK (vagg);
+ GST_OBJECT_UNLOCK (vagg);
+
+ if (gst_videoaggregator_src_setcaps (vagg, caps)) {
+ if (vagg_klass->negotiated_caps)
+ ret =
+ GST_VIDEO_AGGREGATOR_GET_CLASS (vagg)->negotiated_caps (vagg, caps);
+ }
+ gst_caps_unref (caps);
+ } else {
+ GST_VIDEO_AGGREGATOR_UNLOCK (vagg);
+ }
+
+done:
+ GST_VIDEO_AGGREGATOR_SETCAPS_UNLOCK (vagg);
+
+ return ret;
+}
+
+static gboolean
+gst_videoaggregator_pad_sink_setcaps (GstPad * pad, GstObject * parent,
+ GstCaps * caps)
+{
+ GstVideoAggregator *vagg;
+ GstVideoAggregatorPad *vaggpad;
+ GstVideoInfo info;
+ gboolean ret = FALSE;
+
+ GST_INFO_OBJECT (pad, "Setting caps %" GST_PTR_FORMAT, caps);
+
+ vagg = GST_VIDEO_AGGREGATOR (parent);
+ vaggpad = GST_VIDEO_AGGREGATOR_PAD (pad);
+
+ if (!gst_video_info_from_caps (&info, caps)) {
+ GST_DEBUG_OBJECT (pad, "Failed to parse caps");
+ goto beach;
+ }
+
+ GST_VIDEO_AGGREGATOR_LOCK (vagg);
+ if (GST_VIDEO_INFO_FORMAT (&vagg->info) != GST_VIDEO_FORMAT_UNKNOWN) {
+ if (GST_VIDEO_INFO_PAR_N (&vagg->info) != GST_VIDEO_INFO_PAR_N (&info)
+ || GST_VIDEO_INFO_PAR_D (&vagg->info) != GST_VIDEO_INFO_PAR_D (&info) ||
+ GST_VIDEO_INFO_INTERLACE_MODE (&vagg->info) !=
+ GST_VIDEO_INFO_INTERLACE_MODE (&info)) {
+ GST_ERROR_OBJECT (pad,
+ "got input caps %" GST_PTR_FORMAT ", but " "current caps are %"
+ GST_PTR_FORMAT, caps, vagg->priv->current_caps);
+ GST_VIDEO_AGGREGATOR_UNLOCK (vagg);
+ return FALSE;
+ }
+ }
+
+ vaggpad->info = info;
+
+ ret = gst_videoaggregator_update_converters (vagg);
+ GST_VIDEO_AGGREGATOR_UNLOCK (vagg);
+
+ if (ret)
+ ret = gst_videoaggregator_update_src_caps (vagg);
+
+beach:
+ return ret;
+}
+
+static GstCaps *
+gst_videoaggregator_pad_sink_getcaps (GstPad * pad, GstVideoAggregator * vagg,
+ GstCaps * filter)
+{
+ GstCaps *srccaps;
+ GstCaps *template_caps;
+ GstCaps *filtered_caps;
+ GstCaps *returned_caps;
+ GstStructure *s;
+ gboolean had_current_caps = TRUE;
+ gint i, n;
+ GstAggregator *agg = GST_AGGREGATOR (vagg);
+
+ template_caps = gst_pad_get_pad_template_caps (GST_PAD (agg->srcpad));
+
+ srccaps = gst_pad_get_current_caps (GST_PAD (agg->srcpad));
+ if (srccaps == NULL) {
+ had_current_caps = FALSE;
+ srccaps = template_caps;
+ }
+
+ srccaps = gst_caps_make_writable (srccaps);
+
+ n = gst_caps_get_size (srccaps);
+ for (i = 0; i < n; i++) {
+ s = gst_caps_get_structure (srccaps, i);
+ gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
+ "height", GST_TYPE_INT_RANGE, 1, G_MAXINT,
+ "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
+ if (!gst_structure_has_field (s, "pixel-aspect-ratio"))
+ gst_structure_set (s, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
+ NULL);
+
+ gst_structure_remove_fields (s, "colorimetry", "chroma-site", "format",
+ NULL);
+ }
+
+ filtered_caps = srccaps;
+ if (filter)
+ filtered_caps = gst_caps_intersect (srccaps, filter);
+ returned_caps = gst_caps_intersect (filtered_caps, template_caps);
+
+ gst_caps_unref (srccaps);
+ if (filter)
+ gst_caps_unref (filtered_caps);
+ if (had_current_caps)
+ gst_caps_unref (template_caps);
+
+ return returned_caps;
+}
+
+static void
+gst_videoaggregator_update_qos (GstVideoAggregator * vagg, gdouble proportion,
+ GstClockTimeDiff diff, GstClockTime timestamp)
+{
+ GST_DEBUG_OBJECT (vagg,
+ "Updating QoS: proportion %lf, diff %s%" GST_TIME_FORMAT ", timestamp %"
+ GST_TIME_FORMAT, proportion, (diff < 0) ? "-" : "",
+ GST_TIME_ARGS (ABS (diff)), GST_TIME_ARGS (timestamp));
+
+ GST_OBJECT_LOCK (vagg);
+ vagg->priv->proportion = proportion;
+ if (G_LIKELY (timestamp != GST_CLOCK_TIME_NONE)) {
+ if (G_UNLIKELY (diff > 0))
+ vagg->priv->earliest_time =
+ timestamp + 2 * diff + gst_util_uint64_scale_int_round (GST_SECOND,
+ GST_VIDEO_INFO_FPS_D (&vagg->info),
+ GST_VIDEO_INFO_FPS_N (&vagg->info));
+ else
+ vagg->priv->earliest_time = timestamp + diff;
+ } else {
+ vagg->priv->earliest_time = GST_CLOCK_TIME_NONE;
+ }
+ GST_OBJECT_UNLOCK (vagg);
+}
+
+static void
+gst_videoaggregator_reset_qos (GstVideoAggregator * vagg)
+{
+ gst_videoaggregator_update_qos (vagg, 0.5, 0, GST_CLOCK_TIME_NONE);
+ vagg->priv->qos_processed = vagg->priv->qos_dropped = 0;
+}
+
+static void
+gst_videoaggregator_read_qos (GstVideoAggregator * vagg, gdouble * proportion,
+ GstClockTime * time)
+{
+ GST_OBJECT_LOCK (vagg);
+ *proportion = vagg->priv->proportion;
+ *time = vagg->priv->earliest_time;
+ GST_OBJECT_UNLOCK (vagg);
+}
+
+static void
+gst_videoaggregator_reset (GstVideoAggregator * vagg)
+{
+ GstAggregator *agg = GST_AGGREGATOR (vagg);
+ GList *l;
+
+ gst_video_info_init (&vagg->info);
+ vagg->priv->ts_offset = 0;
+ vagg->priv->nframes = 0;
+
+ gst_segment_init (&agg->segment, GST_FORMAT_TIME);
+ agg->segment.position = -1;
+
+ gst_videoaggregator_reset_qos (vagg);
+
+ GST_OBJECT_LOCK (vagg);
+ for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) {
+ GstVideoAggregatorPad *p = l->data;
+
+ gst_buffer_replace (&p->buffer, NULL);
+ p->start_time = -1;
+ p->end_time = -1;
+
+ gst_video_info_init (&p->info);
+ }
+ GST_OBJECT_UNLOCK (vagg);
+}
+
+#define GST_FLOW_NEEDS_DATA GST_FLOW_CUSTOM_ERROR
+static gint
+gst_videoaggregator_fill_queues (GstVideoAggregator * vagg,
+ GstClockTime output_start_time, GstClockTime output_end_time)
+{
+ GstAggregator *agg = GST_AGGREGATOR (vagg);
+ GList *l;
+ gboolean eos = TRUE;
+ gboolean need_more_data = FALSE;
+
+ GST_OBJECT_LOCK (vagg);
+ for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) {
+ GstVideoAggregatorPad *pad = l->data;
+ GstSegment *segment;
+ GstAggregatorPad *bpad;
+ GstBuffer *buf;
+ GstVideoInfo *vinfo;
+ gboolean is_eos;
+
+ bpad = GST_AGGREGATOR_PAD (pad);
+ segment = &bpad->segment;
+ is_eos = bpad->eos;
+ buf = gst_aggregator_pad_get_buffer (bpad);
+ if (buf) {
+ GstClockTime start_time, end_time;
+
+ start_time = GST_BUFFER_TIMESTAMP (buf);
+ if (start_time == -1) {
+ gst_buffer_unref (buf);
+ GST_DEBUG_OBJECT (pad, "Need timestamped buffers!");
+ GST_OBJECT_UNLOCK (vagg);
+ return GST_FLOW_ERROR;
+ }
+
+ vinfo = &pad->info;
+
+ /* FIXME: Make all this work with negative rates */
+
+ if ((pad->buffer && start_time < GST_BUFFER_TIMESTAMP (pad->buffer))
+ || (pad->queued && start_time < GST_BUFFER_TIMESTAMP (pad->queued))) {
+ GST_DEBUG_OBJECT (pad, "Buffer from the past, dropping");
+ gst_buffer_unref (buf);
+ buf = gst_aggregator_pad_steal_buffer (bpad);
+ gst_buffer_unref (buf);
+ need_more_data = TRUE;
+ continue;
+ }
+
+ if (pad->queued) {
+ end_time = start_time - GST_BUFFER_TIMESTAMP (pad->queued);
+ start_time = GST_BUFFER_TIMESTAMP (pad->queued);
+ gst_buffer_unref (buf);
+ buf = gst_buffer_ref (pad->queued);
+ vinfo = &pad->queued_vinfo;
+ } else {
+ end_time = GST_BUFFER_DURATION (buf);
+
+ if (end_time == -1) {
+ pad->queued = buf;
+ buf = gst_aggregator_pad_steal_buffer (bpad);
+ gst_buffer_unref (buf);
+ pad->queued_vinfo = pad->info;
+ GST_DEBUG ("end time is -1 and nothing queued");
+ need_more_data = TRUE;
+ continue;
+ }
+ }
+
+ g_assert (start_time != -1 && end_time != -1);
+ end_time += start_time; /* convert from duration to position */
+
+ /* Check if it's inside the segment */
+ if (start_time >= segment->stop || end_time < segment->start) {
+ GST_DEBUG_OBJECT (pad,
+ "Buffer outside the segment : segment: [%" GST_TIME_FORMAT " -- %"
+ GST_TIME_FORMAT "]" " Buffer [%" GST_TIME_FORMAT " -- %"
+ GST_TIME_FORMAT "]", GST_TIME_ARGS (segment->stop),
+ GST_TIME_ARGS (segment->start), GST_TIME_ARGS (start_time),
+ GST_TIME_ARGS (end_time));
+
+ if (buf == pad->queued) {
+ gst_buffer_unref (buf);
+ gst_buffer_replace (&pad->queued, NULL);
+ } else {
+ gst_buffer_unref (buf);
+ buf = gst_aggregator_pad_steal_buffer (bpad);
+ gst_buffer_unref (buf);
+ }
+
+ need_more_data = TRUE;
+ continue;
+ }
+
+ /* Clip to segment and convert to running time */
+ start_time = MAX (start_time, segment->start);
+ if (segment->stop != -1)
+ end_time = MIN (end_time, segment->stop);
+ start_time =
+ gst_segment_to_running_time (segment, GST_FORMAT_TIME, start_time);
+ end_time =
+ gst_segment_to_running_time (segment, GST_FORMAT_TIME, end_time);
+ g_assert (start_time != -1 && end_time != -1);
+
+ /* Convert to the output segment rate */
+ if (ABS (agg->segment.rate) != 1.0) {
+ start_time *= ABS (agg->segment.rate);
+ end_time *= ABS (agg->segment.rate);
+ }
+
+ if (pad->end_time != -1 && pad->end_time > end_time) {
+ GST_DEBUG_OBJECT (pad, "Buffer from the past, dropping");
+ if (buf == pad->queued) {
+ gst_buffer_unref (buf);
+ gst_buffer_replace (&pad->queued, NULL);
+ } else {
+ gst_buffer_unref (buf);
+ buf = gst_aggregator_pad_steal_buffer (bpad);
+ gst_buffer_unref (buf);
+ }
+
+ need_more_data = TRUE;
+ continue;
+ }
+
+ if (end_time >= output_start_time && start_time < output_end_time) {
+ GST_DEBUG_OBJECT (pad,
+ "Taking new buffer with start time %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (start_time));
+ gst_buffer_replace (&pad->buffer, buf);
+ pad->buffer_vinfo = *vinfo;
+ pad->start_time = start_time;
+ pad->end_time = end_time;
+
+ if (buf == pad->queued) {
+ gst_buffer_unref (buf);
+ gst_buffer_replace (&pad->queued, NULL);
+ } else {
+ gst_buffer_unref (buf);
+ buf = gst_aggregator_pad_steal_buffer (bpad);
+ gst_buffer_unref (buf);
+ }
+ eos = FALSE;
+ } else if (start_time >= output_end_time) {
+ GST_DEBUG_OBJECT (pad, "Keeping buffer until %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (start_time));
+ eos = FALSE;
+ } else {
+ GST_DEBUG_OBJECT (pad, "Too old buffer -- dropping");
+ if (buf == pad->queued) {
+ gst_buffer_unref (buf);
+ gst_buffer_replace (&pad->queued, NULL);
+ } else {
+ gst_buffer_unref (buf);
+ buf = gst_aggregator_pad_steal_buffer (bpad);
+ gst_buffer_unref (buf);
+ }
+
+ need_more_data = TRUE;
+ continue;
+ }
+ } else {
+ if (pad->end_time != -1) {
+ if (pad->end_time <= output_start_time) {
+ gst_buffer_replace (&pad->buffer, NULL);
+ pad->start_time = pad->end_time = -1;
+ if (is_eos) {
+ GST_DEBUG ("I just need more data");
+ need_more_data = TRUE;
+ }
+ } else if (is_eos) {
+ eos = FALSE;
+ }
+ }
+ }
+ }
+ GST_OBJECT_UNLOCK (vagg);
+
+ if (need_more_data)
+ return GST_FLOW_NEEDS_DATA;
+ if (eos)
+ return GST_FLOW_EOS;
+
+ return GST_FLOW_OK;
+}
+
+static gboolean
+prepare_frames (GstVideoAggregator * vagg, GstVideoAggregatorPad * pad)
+{
+ GstAggregatorPad *bpad = GST_AGGREGATOR_PAD (pad);
+
+ static GstAllocationParams params = { 0, 15, 0, 0, };
+
+ if (pad->buffer != NULL) {
+ guint outsize;
+ GstClockTime timestamp;
+ gint64 stream_time;
+ GstSegment *seg;
+ GstVideoFrame *converted_frame = g_slice_new0 (GstVideoFrame);
+ GstBuffer *converted_buf = NULL;
+ GstVideoFrame *frame = g_slice_new0 (GstVideoFrame);
+
+ seg = &bpad->segment;
+
+ timestamp = GST_BUFFER_TIMESTAMP (pad->buffer);
+
+ stream_time = gst_segment_to_stream_time (seg, GST_FORMAT_TIME, timestamp);
+
+ /* sync object properties on stream time */
+ if (GST_CLOCK_TIME_IS_VALID (stream_time))
+ gst_object_sync_values (GST_OBJECT (pad), stream_time);
+
+
+ if (!gst_video_frame_map (frame, &pad->buffer_vinfo, pad->buffer,
+ GST_MAP_READ)) {
+ GST_WARNING_OBJECT (vagg, "Could not map input buffer");
+ }
+
+ if (pad->convert) {
+ gint converted_size;
+
+ /* We wait until here to set the conversion infos, in case vagg->info changed */
+ if (pad->need_conversion_update) {
+ pad->conversion_info = vagg->info;
+ gst_video_info_set_format (&(pad->conversion_info),
+ GST_VIDEO_INFO_FORMAT (&vagg->info), pad->info.width,
+ pad->info.height);
+ pad->need_conversion_update = FALSE;
+ }
+
+ converted_size = pad->conversion_info.size;
+ outsize = GST_VIDEO_INFO_SIZE (&vagg->info);
+ converted_size = converted_size > outsize ? converted_size : outsize;
+ converted_buf = gst_buffer_new_allocate (NULL, converted_size, ¶ms);
+
+ if (!gst_video_frame_map (converted_frame, &(pad->conversion_info),
+ converted_buf, GST_MAP_READWRITE)) {
+ GST_WARNING_OBJECT (vagg, "Could not map converted frame");
+
+ return FALSE;
+ }
+
+ videoconvert_convert_convert (pad->convert, converted_frame, frame);
+ pad->converted_buffer = converted_buf;
+ gst_video_frame_unmap (frame);
+ } else {
+ converted_frame = frame;
+ converted_buf = pad->buffer;
+ }
+
+ pad->aggregated_frame = converted_frame;
+ }
+
+ return TRUE;
+}
+
+static gboolean
+clean_pad (GstVideoAggregator * vagg, GstVideoAggregatorPad * pad)
+{
+ if (pad->aggregated_frame) {
+ gst_video_frame_unmap (pad->aggregated_frame);
+ g_slice_free (GstVideoFrame, pad->aggregated_frame);
+ pad->aggregated_frame = NULL;
+ }
+
+ if (pad->converted_buffer) {
+ gst_buffer_unref (pad->converted_buffer);
+ pad->converted_buffer = NULL;
+ }
+
+ return TRUE;
+}
+
+static GstFlowReturn
+gst_videoaggregator_do_aggregate (GstVideoAggregator * vagg,
+ GstClockTime output_start_time, GstClockTime output_end_time,
+ GstBuffer ** outbuf)
+{
+ GstFlowReturn ret = GST_FLOW_OK;
+ GstElementClass *klass = GST_ELEMENT_GET_CLASS (vagg);
+ GstVideoAggregatorClass *vagg_klass = (GstVideoAggregatorClass *) klass;
+
+ g_assert (vagg_klass->aggregate_frames != NULL);
+ g_assert (vagg_klass->get_output_buffer != NULL);
+
+ if ((ret = vagg_klass->get_output_buffer (vagg, outbuf)) != GST_FLOW_OK) {
+ GST_WARNING_OBJECT (vagg, "Could not get an output buffer, reason: %s",
+ gst_flow_get_name (ret));
+ return ret;
+ }
+
+ GST_BUFFER_TIMESTAMP (*outbuf) = output_start_time;
+ GST_BUFFER_DURATION (*outbuf) = output_end_time - output_start_time;
+
+ if (vagg_klass->disable_frame_conversion == FALSE) {
+ /* Here we convert all the frames the subclass will have to aggregate */
+ gst_aggregator_iterate_sinkpads (GST_AGGREGATOR (vagg),
+ (GstAggregatorPadForeachFunc) prepare_frames, NULL);
+ }
+
+ ret = vagg_klass->aggregate_frames (vagg, *outbuf);
+
+ gst_aggregator_iterate_sinkpads (GST_AGGREGATOR (vagg),
+ (GstAggregatorPadForeachFunc) clean_pad, NULL);
+
+ return ret;
+}
+
+/* Perform qos calculations before processing the next frame. Returns TRUE if
+ * the frame should be processed, FALSE if the frame can be dropped entirely */
+static gint64
+gst_videoaggregator_do_qos (GstVideoAggregator * vagg, GstClockTime timestamp)
+{
+ GstAggregator *agg = GST_AGGREGATOR (vagg);
+ GstClockTime qostime, earliest_time;
+ gdouble proportion;
+ gint64 jitter;
+
+ /* no timestamp, can't do QoS => process frame */
+ if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (timestamp))) {
+ GST_LOG_OBJECT (vagg, "invalid timestamp, can't do QoS, process frame");
+ return -1;
+ }
+
+ /* get latest QoS observation values */
+ gst_videoaggregator_read_qos (vagg, &proportion, &earliest_time);
+
+ /* skip qos if we have no observation (yet) => process frame */
+ if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (earliest_time))) {
+ GST_LOG_OBJECT (vagg, "no observation yet, process frame");
+ return -1;
+ }
+
+ /* qos is done on running time */
+ qostime =
+ gst_segment_to_running_time (&agg->segment, GST_FORMAT_TIME, timestamp);
+
+ /* see how our next timestamp relates to the latest qos timestamp */
+ GST_LOG_OBJECT (vagg, "qostime %" GST_TIME_FORMAT ", earliest %"
+ GST_TIME_FORMAT, GST_TIME_ARGS (qostime), GST_TIME_ARGS (earliest_time));
+
+ jitter = GST_CLOCK_DIFF (qostime, earliest_time);
+ if (qostime != GST_CLOCK_TIME_NONE && jitter > 0) {
+ GST_DEBUG_OBJECT (vagg, "we are late, drop frame");
+ return jitter;
+ }
+
+ GST_LOG_OBJECT (vagg, "process frame");
+ return jitter;
+}
+
+static GstFlowReturn
+gst_videoaggregator_aggregate (GstAggregator * agg)
+{
+ GstFlowReturn ret;
+ GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg);
+ GstClockTime output_start_time, output_end_time;
+ GstBuffer *outbuf = NULL;
+ gint res;
+ gint64 jitter;
+
+ /* If we're not negotiated_caps yet... */
+ if (GST_VIDEO_INFO_FORMAT (&vagg->info) == GST_VIDEO_FORMAT_UNKNOWN) {
+ GST_INFO_OBJECT (agg, "Not negotiated yet!");
+ return GST_FLOW_NOT_NEGOTIATED;
+ }
+
+ if (gst_pad_check_reconfigure (agg->srcpad))
+ gst_videoaggregator_update_src_caps (vagg);
+
+ if (vagg->priv->send_caps) {
+ gst_aggregator_set_src_caps (agg, vagg->priv->current_caps);
+ vagg->priv->send_caps = FALSE;
+ }
+
+ GST_VIDEO_AGGREGATOR_LOCK (vagg);
+
+ if (agg->segment.position == -1)
+ output_start_time = agg->segment.start;
+ else
+ output_start_time = agg->segment.position;
+
+ output_end_time =
+ vagg->priv->ts_offset + gst_util_uint64_scale_round (vagg->priv->nframes +
+ 1, GST_SECOND * GST_VIDEO_INFO_FPS_D (&vagg->info),
+ GST_VIDEO_INFO_FPS_N (&vagg->info)) + agg->segment.start;
+
+ if (agg->segment.stop != -1)
+ output_end_time = MIN (output_end_time, agg->segment.stop);
+
+ res =
+ gst_videoaggregator_fill_queues (vagg, output_start_time,
+ output_end_time);
+
+ if (res == GST_FLOW_NEEDS_DATA) {
+ GST_DEBUG_OBJECT (vagg, "Need more data for decisions");
+ ret = GST_FLOW_OK;
+ goto done;
+ } else if (res == GST_FLOW_EOS) {
+ GST_VIDEO_AGGREGATOR_UNLOCK (vagg);
+ GST_DEBUG_OBJECT (vagg, "All sinkpads are EOS -- forwarding");
+ ret = GST_FLOW_EOS;
+ goto done_unlocked;
+ } else if (res == GST_FLOW_ERROR) {
+ GST_WARNING_OBJECT (vagg, "Error collecting buffers");
+ ret = GST_FLOW_ERROR;
+ goto done;
+ }
+
+ jitter = gst_videoaggregator_do_qos (vagg, output_start_time);
+ if (jitter <= 0) {
+ ret = gst_videoaggregator_do_aggregate (vagg, output_start_time,
+ output_end_time, &outbuf);
+ vagg->priv->qos_processed++;
+ } else {
+ GstMessage *msg;
+
+ vagg->priv->qos_dropped++;
+
+ /* TODO: live */
+ msg =
+ gst_message_new_qos (GST_OBJECT_CAST (vagg), FALSE,
+ gst_segment_to_running_time (&agg->segment, GST_FORMAT_TIME,
+ output_start_time), gst_segment_to_stream_time (&agg->segment,
+ GST_FORMAT_TIME, output_start_time), output_start_time,
+ output_end_time - output_start_time);
+ gst_message_set_qos_values (msg, jitter, vagg->priv->proportion, 1000000);
+ gst_message_set_qos_stats (msg, GST_FORMAT_BUFFERS,
+ vagg->priv->qos_processed, vagg->priv->qos_dropped);
+ gst_element_post_message (GST_ELEMENT_CAST (vagg), msg);
+
+ ret = GST_FLOW_OK;
+ }
+
+ agg->segment.position = output_end_time;
+ vagg->priv->nframes++;
+
+ GST_VIDEO_AGGREGATOR_UNLOCK (vagg);
+ if (outbuf) {
+ GST_DEBUG_OBJECT (vagg,
+ "Pushing buffer with ts %" GST_TIME_FORMAT " and duration %"
+ GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)),
+ GST_TIME_ARGS (GST_BUFFER_DURATION (outbuf)));
+
+ ret = gst_aggregator_finish_buffer (agg, outbuf);
+ }
+ goto done_unlocked;
+
+done:
+ GST_VIDEO_AGGREGATOR_UNLOCK (vagg);
+
+done_unlocked:
+ return ret;
+}
+
+/* FIXME, the duration query should reflect how long you will produce
+ * data, that is the amount of stream time until you will emit EOS.
+ *
+ * For synchronized aggregating this is always the max of all the durations
+ * of upstream since we emit EOS when all of them finished.
+ *
+ * We don't do synchronized aggregating so this really depends on where the
+ * streams where punched in and what their relative offsets are against
+ * each other which we can get from the first timestamps we see.
+ *
+ * When we add a new stream (or remove a stream) the duration might
+ * also become invalid again and we need to post a new DURATION
+ * message to notify this fact to the parent.
+ * For now we take the max of all the upstream elements so the simple
+ * cases work at least somewhat.
+ */
+static gboolean
+gst_videoaggregator_query_duration (GstVideoAggregator * vagg, GstQuery * query)
+{
+ GValue item = { 0 };
+ gint64 max;
+ gboolean res;
+ GstFormat format;
+ GstIterator *it;
+ gboolean done;
+
+ /* parse format */
+ gst_query_parse_duration (query, &format, NULL);
+
+ max = -1;
+ res = TRUE;
+ done = FALSE;
+
+ /* Take maximum of all durations */
+ it = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (vagg));
+ while (!done) {
+ switch (gst_iterator_next (it, &item)) {
+ case GST_ITERATOR_DONE:
+ done = TRUE;
+ break;
+ case GST_ITERATOR_OK:
+ {
+ GstPad *pad;
+ gint64 duration;
+
+ pad = g_value_get_object (&item);
+
+ /* ask sink peer for duration */
+ res &= gst_pad_peer_query_duration (pad, format, &duration);
+ /* take max from all valid return values */
+ if (res) {
+ /* valid unknown length, stop searching */
+ if (duration == -1) {
+ max = duration;
+ done = TRUE;
+ }
+ /* else see if bigger than current max */
+ else if (duration > max)
+ max = duration;
+ }
+ g_value_reset (&item);
+ break;
+ }
+ case GST_ITERATOR_RESYNC:
+ max = -1;
+ res = TRUE;
+ gst_iterator_resync (it);
+ break;
+ default:
+ res = FALSE;
+ done = TRUE;
+ break;
+ }
+ }
+ g_value_unset (&item);
+ gst_iterator_free (it);
+
+ if (res) {
+ /* and store the max */
+ GST_DEBUG_OBJECT (vagg, "Total duration in format %s: %"
+ GST_TIME_FORMAT, gst_format_get_name (format), GST_TIME_ARGS (max));
+ gst_query_set_duration (query, format, max);
+ }
+
+ return res;
+}
+
+static gboolean
+gst_videoaggregator_query_latency (GstVideoAggregator * vagg, GstQuery * query)
+{
+ GstClockTime min, max;
+ gboolean live;
+ gboolean res;
+ GstIterator *it;
+ gboolean done;
+ GValue item = { 0 };
+
+ res = TRUE;
+ done = FALSE;
+ live = FALSE;
+ min = 0;
+ max = GST_CLOCK_TIME_NONE;
+
+ /* Take maximum of all latency values */
+ it = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (vagg));
+ while (!done) {
+ switch (gst_iterator_next (it, &item)) {
+ case GST_ITERATOR_DONE:
+ done = TRUE;
+ break;
+ case GST_ITERATOR_OK:
+ {
+ GstPad *pad = g_value_get_object (&item);
+ GstQuery *peerquery;
+ GstClockTime min_cur, max_cur;
+ gboolean live_cur;
+
+ peerquery = gst_query_new_latency ();
+
+ /* Ask peer for latency */
+ res &= gst_pad_peer_query (pad, peerquery);
+
+ /* take max from all valid return values */
+ if (res) {
+ gst_query_parse_latency (peerquery, &live_cur, &min_cur, &max_cur);
+
+ if (min_cur > min)
+ min = min_cur;
+
+ if (max_cur != GST_CLOCK_TIME_NONE &&
+ ((max != GST_CLOCK_TIME_NONE && max_cur > max) ||
+ (max == GST_CLOCK_TIME_NONE)))
+ max = max_cur;
+
+ live = live || live_cur;
+ }
+
+ gst_query_unref (peerquery);
+ g_value_reset (&item);
+ break;
+ }
+ case GST_ITERATOR_RESYNC:
+ live = FALSE;
+ min = 0;
+ max = GST_CLOCK_TIME_NONE;
+ res = TRUE;
+ gst_iterator_resync (it);
+ break;
+ default:
+ res = FALSE;
+ done = TRUE;
+ break;
+ }
+ }
+ g_value_unset (&item);
+ gst_iterator_free (it);
+
+ if (res) {
+ /* store the results */
+ GST_DEBUG_OBJECT (vagg, "Calculated total latency: live %s, min %"
+ GST_TIME_FORMAT ", max %" GST_TIME_FORMAT,
+ (live ? "yes" : "no"), GST_TIME_ARGS (min), GST_TIME_ARGS (max));
+ gst_query_set_latency (query, live, min, max);
+ }
+
+ return res;
+}
+
+static gboolean
+gst_videoaggregator_src_query (GstAggregator * agg, GstQuery * query)
+{
+ GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg);
+ gboolean res = FALSE;
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_POSITION:
+ {
+ GstFormat format;
+
+ gst_query_parse_position (query, &format, NULL);
+
+ switch (format) {
+ case GST_FORMAT_TIME:
+ gst_query_set_position (query, format,
+ gst_segment_to_stream_time (&agg->segment, GST_FORMAT_TIME,
+ agg->segment.position));
+ res = TRUE;
+ break;
+ default:
+ break;
+ }
+ break;
+ }
+ case GST_QUERY_DURATION:
+ res = gst_videoaggregator_query_duration (vagg, query);
+ break;
+ case GST_QUERY_LATENCY:
+ res = gst_videoaggregator_query_latency (vagg, query);
+ break;
+ case GST_QUERY_CAPS:
+ res =
+ GST_AGGREGATOR_CLASS (gst_videoaggregator_parent_class)->src_query
+ (agg, query);
+ break;
+ default:
+ /* FIXME, needs a custom query handler because we have multiple
+ * sinkpads */
+ res = FALSE;
+ break;
+ }
+ return res;
+}
+
+static gboolean
+gst_videoaggregator_src_event (GstAggregator * agg, GstEvent * event)
+{
+ GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg);
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_QOS:
+ {
+ GstQOSType type;
+ GstClockTimeDiff diff;
+ GstClockTime timestamp;
+ gdouble proportion;
+
+ gst_event_parse_qos (event, &type, &proportion, &diff, ×tamp);
+ gst_videoaggregator_update_qos (vagg, proportion, diff, timestamp);
+ break;
+ }
+ case GST_EVENT_SEEK:
+ {
+ GST_DEBUG_OBJECT (vagg, "Handling SEEK event");
+ }
+ default:
+ break;
+ }
+
+ return
+ GST_AGGREGATOR_CLASS (gst_videoaggregator_parent_class)->src_event (agg,
+ event);
+}
+
+static GstFlowReturn
+gst_videoaggregator_sink_clip (GstAggregator * agg,
+ GstAggregatorPad * bpad, GstBuffer * buf, GstBuffer ** outbuf)
+{
+ GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (bpad);
+ GstClockTime start_time, end_time;
+
+ start_time = GST_BUFFER_TIMESTAMP (buf);
+ if (start_time == -1) {
+ GST_DEBUG_OBJECT (pad, "Timestamped buffers required!");
+ gst_buffer_unref (buf);
+ return GST_FLOW_ERROR;
+ }
+
+ end_time = GST_BUFFER_DURATION (buf);
+ if (end_time == -1 && GST_VIDEO_INFO_FPS_N (&pad->info) != 0)
+ end_time =
+ gst_util_uint64_scale_int_round (GST_SECOND,
+ GST_VIDEO_INFO_FPS_D (&pad->info), GST_VIDEO_INFO_FPS_N (&pad->info));
+ if (end_time == -1) {
+ *outbuf = buf;
+ return GST_FLOW_OK;
+ }
+
+ start_time = MAX (start_time, bpad->segment.start);
+ start_time =
+ gst_segment_to_running_time (&bpad->segment, GST_FORMAT_TIME, start_time);
+
+ end_time += GST_BUFFER_TIMESTAMP (buf);
+ if (bpad->segment.stop != -1)
+ end_time = MIN (end_time, bpad->segment.stop);
+ end_time =
+ gst_segment_to_running_time (&bpad->segment, GST_FORMAT_TIME, end_time);
+
+ /* Convert to the output segment rate */
+ if (ABS (agg->segment.rate) != 1.0) {
+ start_time *= ABS (agg->segment.rate);
+ end_time *= ABS (agg->segment.rate);
+ }
+
+ if (bpad->buffer != NULL && end_time < pad->end_time) {
+ gst_buffer_unref (buf);
+ *outbuf = NULL;
+ return GST_FLOW_OK;
+ }
+
+ *outbuf = buf;
+ return GST_FLOW_OK;
+}
+
+static GstFlowReturn
+gst_videoaggregator_flush (GstAggregator * agg)
+{
+ GList *l;
+ gdouble abs_rate;
+ GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg);
+
+ GST_INFO_OBJECT (agg, "Flushing");
+ abs_rate = ABS (agg->segment.rate);
+ GST_OBJECT_LOCK (vagg);
+ for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) {
+ GstVideoAggregatorPad *p = l->data;
+
+ /* Convert to the output segment rate */
+ if (ABS (agg->segment.rate) != abs_rate) {
+ if (ABS (agg->segment.rate) != 1.0 && p->buffer) {
+ p->start_time /= ABS (agg->segment.rate);
+ p->end_time /= ABS (agg->segment.rate);
+ }
+ if (abs_rate != 1.0 && p->buffer) {
+ p->start_time *= abs_rate;
+ p->end_time *= abs_rate;
+ }
+ }
+ }
+ GST_OBJECT_UNLOCK (vagg);
+
+ agg->segment.position = -1;
+ vagg->priv->ts_offset = 0;
+ vagg->priv->nframes = 0;
+
+ gst_videoaggregator_reset_qos (vagg);
+ return GST_FLOW_OK;
+}
+
+static gboolean
+gst_videoaggregator_sink_event (GstAggregator * agg, GstAggregatorPad * bpad,
+ GstEvent * event)
+{
+ GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg);
+ GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (bpad);
+ gboolean ret = TRUE;
+
+ GST_DEBUG_OBJECT (pad, "Got %s event on pad %s:%s",
+ GST_EVENT_TYPE_NAME (event), GST_DEBUG_PAD_NAME (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_CAPS:
+ {
+ GstCaps *caps;
+
+ gst_event_parse_caps (event, &caps);
+ ret =
+ gst_videoaggregator_pad_sink_setcaps (GST_PAD (pad),
+ GST_OBJECT (vagg), caps);
+ gst_event_unref (event);
+ event = NULL;
+ break;
+ }
+ case GST_EVENT_SEGMENT:{
+ GstSegment seg;
+ gst_event_copy_segment (event, &seg);
+
+ g_assert (seg.format == GST_FORMAT_TIME);
+ break;
+ }
+ default:
+ break;
+ }
+
+ if (event != NULL)
+ return GST_AGGREGATOR_CLASS (gst_videoaggregator_parent_class)->sink_event
+ (agg, bpad, event);
+
+ return ret;
+}
+
+static gboolean
+gst_videoaggregator_start (GstAggregator * agg)
+{
+ GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg);
+
+ if (!GST_AGGREGATOR_CLASS (gst_videoaggregator_parent_class)->start (agg))
+ return FALSE;
+
+ vagg->priv->send_caps = TRUE;
+ gst_segment_init (&agg->segment, GST_FORMAT_TIME);
+ gst_caps_replace (&vagg->priv->current_caps, NULL);
+
+ return TRUE;
+}
+
+static gboolean
+gst_videoaggregator_stop (GstAggregator * agg)
+{
+ GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg);
+
+ if (!GST_AGGREGATOR_CLASS (gst_videoaggregator_parent_class)->stop (agg))
+ return FALSE;
+
+ gst_videoaggregator_reset (vagg);
+
+ return TRUE;
+}
+
+/* GstElement vmethods */
+static GstPad *
+gst_videoaggregator_request_new_pad (GstElement * element,
+ GstPadTemplate * templ, const gchar * req_name, const GstCaps * caps)
+{
+ GstVideoAggregator *vagg;
+ GstVideoAggregatorPad *vaggpad;
+
+ vagg = GST_VIDEO_AGGREGATOR (element);
+
+ vaggpad = (GstVideoAggregatorPad *)
+ GST_ELEMENT_CLASS (gst_videoaggregator_parent_class)->request_new_pad
+ (element, templ, req_name, caps);
+
+ if (vaggpad == NULL)
+ return NULL;
+
+ GST_OBJECT_LOCK (vagg);
+ vaggpad->zorder = GST_ELEMENT (vagg)->numsinkpads;
+ vaggpad->start_time = -1;
+ vaggpad->end_time = -1;
+ element->sinkpads = g_list_sort (element->sinkpads,
+ (GCompareFunc) pad_zorder_compare);
+ GST_OBJECT_UNLOCK (vagg);
+
+ gst_child_proxy_child_added (GST_CHILD_PROXY (vagg), G_OBJECT (vaggpad),
+ GST_OBJECT_NAME (vaggpad));
+
+ return GST_PAD (vaggpad);
+}
+
+static void
+gst_videoaggregator_release_pad (GstElement * element, GstPad * pad)
+{
+ GstVideoAggregator *vagg = NULL;
+ GstVideoAggregatorPad *vaggpad;
+ gboolean update_caps;
+
+ vagg = GST_VIDEO_AGGREGATOR (element);
+ vaggpad = GST_VIDEO_AGGREGATOR_PAD (pad);
+
+ GST_VIDEO_AGGREGATOR_LOCK (vagg);
+ gst_videoaggregator_update_converters (vagg);
+ gst_buffer_replace (&vaggpad->buffer, NULL);
+ update_caps = GST_VIDEO_INFO_FORMAT (&vagg->info) != GST_VIDEO_FORMAT_UNKNOWN;
+ GST_VIDEO_AGGREGATOR_UNLOCK (vagg);
+
+ gst_child_proxy_child_removed (GST_CHILD_PROXY (vagg), G_OBJECT (vaggpad),
+ GST_OBJECT_NAME (vaggpad));
+
+ GST_ELEMENT_CLASS (gst_videoaggregator_parent_class)->release_pad (GST_ELEMENT
+ (vagg), pad);
+
+ if (update_caps)
+ gst_videoaggregator_update_src_caps (vagg);
+
+ return;
+}
+
+static GstFlowReturn
+gst_videoaggregator_get_output_buffer (GstVideoAggregator * videoaggregator,
+ GstBuffer ** outbuf)
+{
+ guint outsize;
+ static GstAllocationParams params = { 0, 15, 0, 0, };
+
+ outsize = GST_VIDEO_INFO_SIZE (&videoaggregator->info);
+ *outbuf = gst_buffer_new_allocate (NULL, outsize, ¶ms);
+
+ if (*outbuf == NULL) {
+ GST_ERROR_OBJECT (videoaggregator,
+ "Could not instantiate buffer of size: %d", outsize);
+ }
+
+ return GST_FLOW_OK;
+}
+
+static gboolean
+gst_videoaggregator_pad_sink_acceptcaps (GstPad * pad,
+ GstVideoAggregator * vagg, GstCaps * caps)
+{
+ gboolean ret;
+ GstCaps *modified_caps;
+ GstCaps *accepted_caps;
+ GstCaps *template_caps;
+ gboolean had_current_caps = TRUE;
+ gint i, n;
+ GstStructure *s;
+ GstAggregator *agg = GST_AGGREGATOR (vagg);
+
+ GST_DEBUG_OBJECT (pad, "%" GST_PTR_FORMAT, caps);
+
+ accepted_caps = gst_pad_get_current_caps (GST_PAD (agg->srcpad));
+
+ template_caps = gst_pad_get_pad_template_caps (GST_PAD (agg->srcpad));
+
+ if (accepted_caps == NULL) {
+ accepted_caps = template_caps;
+ had_current_caps = FALSE;
+ }
+
+ accepted_caps = gst_caps_make_writable (accepted_caps);
+
+ GST_LOG_OBJECT (pad, "src caps %" GST_PTR_FORMAT, accepted_caps);
+
+ n = gst_caps_get_size (accepted_caps);
+ for (i = 0; i < n; i++) {
+ s = gst_caps_get_structure (accepted_caps, i);
+ gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
+ "height", GST_TYPE_INT_RANGE, 1, G_MAXINT,
+ "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
+ if (!gst_structure_has_field (s, "pixel-aspect-ratio"))
+ gst_structure_set (s, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
+ NULL);
+
+ gst_structure_remove_fields (s, "colorimetry", "chroma-site", "format",
+ NULL);
+ }
+
+ modified_caps = gst_caps_intersect (accepted_caps, template_caps);
+
+ ret = gst_caps_can_intersect (caps, accepted_caps);
+ GST_DEBUG_OBJECT (pad, "%saccepted caps %" GST_PTR_FORMAT,
+ (ret ? "" : "not "), caps);
+ gst_caps_unref (accepted_caps);
+ gst_caps_unref (modified_caps);
+ if (had_current_caps)
+ gst_caps_unref (template_caps);
+ return ret;
+}
+
+static gboolean
+gst_videoaggregator_sink_query (GstAggregator * agg, GstAggregatorPad * bpad,
+ GstQuery * query)
+{
+ GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg);
+ GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (bpad);
+ gboolean ret = FALSE;
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_CAPS:
+ {
+ GstCaps *filter, *caps;
+
+ gst_query_parse_caps (query, &filter);
+ caps = gst_videoaggregator_pad_sink_getcaps (GST_PAD (pad), vagg, filter);
+ gst_query_set_caps_result (query, caps);
+ gst_caps_unref (caps);
+ ret = TRUE;
+ break;
+ }
+ case GST_QUERY_ACCEPT_CAPS:
+ {
+ GstCaps *caps;
+
+ gst_query_parse_accept_caps (query, &caps);
+ ret = gst_videoaggregator_pad_sink_acceptcaps (GST_PAD (pad), vagg, caps);
+ gst_query_set_accept_caps_result (query, ret);
+ ret = TRUE;
+ break;
+ }
+ default:
+ ret =
+ GST_AGGREGATOR_CLASS (gst_videoaggregator_parent_class)->sink_query
+ (agg, bpad, query);
+ break;
+ }
+ return ret;
+}
+
+/* GObject vmethods */
+static void
+gst_videoaggregator_finalize (GObject * o)
+{
+ GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (o);
+
+ g_mutex_clear (&vagg->priv->lock);
+ g_mutex_clear (&vagg->priv->setcaps_lock);
+
+ G_OBJECT_CLASS (gst_videoaggregator_parent_class)->finalize (o);
+}
+
+static void
+gst_videoaggregator_dispose (GObject * o)
+{
+ GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (o);
+
+ gst_caps_replace (&vagg->priv->current_caps, NULL);
+}
+
+static void
+gst_videoaggregator_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec)
+{
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_videoaggregator_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+/* GObject boilerplate */
+static void
+gst_videoaggregator_class_init (GstVideoAggregatorClass * klass)
+{
+ GObjectClass *gobject_class = (GObjectClass *) klass;
+ GstElementClass *gstelement_class = (GstElementClass *) klass;
+ GstAggregatorClass *agg_class = (GstAggregatorClass *) klass;
+
+ GST_DEBUG_CATEGORY_INIT (gst_videoaggregator_debug, "videoaggregator", 0,
+ "base video aggregator");
+
+ g_type_class_add_private (klass, sizeof (GstVideoAggregatorPrivate));
+
+ gobject_class->finalize = gst_videoaggregator_finalize;
+ gobject_class->dispose = gst_videoaggregator_dispose;
+
+ gobject_class->get_property = gst_videoaggregator_get_property;
+ gobject_class->set_property = gst_videoaggregator_set_property;
+
+ gstelement_class->request_new_pad =
+ GST_DEBUG_FUNCPTR (gst_videoaggregator_request_new_pad);
+ gstelement_class->release_pad =
+ GST_DEBUG_FUNCPTR (gst_videoaggregator_release_pad);
+
+ gst_element_class_set_static_metadata (gstelement_class,
+ "Video aggregator base class", "Filter/Editor/Video",
+ "Aggregate multiple video streams",
+ "Wim Taymans <wim@fluendo.com>, "
+ "Sebastian Dröge <sebastian.droege@collabora.co.uk>, "
+ "Mathieu Duponchelle <mathieu.duponchelle@opencreed.com>, "
+ "Thibault Saunier <tsaunier@gnome.org>");
+
+ agg_class->sinkpads_type = GST_TYPE_VIDEO_AGGREGATOR_PAD;
+ agg_class->start = gst_videoaggregator_start;
+ agg_class->stop = gst_videoaggregator_stop;
+ agg_class->sink_query = gst_videoaggregator_sink_query;
+ agg_class->sink_event = gst_videoaggregator_sink_event;
+ agg_class->flush = gst_videoaggregator_flush;
+ agg_class->clip = gst_videoaggregator_sink_clip;
+ agg_class->aggregate = gst_videoaggregator_aggregate;
+ agg_class->src_event = gst_videoaggregator_src_event;
+ agg_class->src_query = gst_videoaggregator_src_query;
+
+ klass->get_output_buffer = gst_videoaggregator_get_output_buffer;
+
+ /* Register the pad class */
+ g_type_class_ref (GST_TYPE_VIDEO_AGGREGATOR_PAD);
+}
+
+static void
+gst_videoaggregator_init (GstVideoAggregator * vagg)
+{
+ vagg->priv =
+ G_TYPE_INSTANCE_GET_PRIVATE (vagg, GST_TYPE_VIDEO_AGGREGATOR,
+ GstVideoAggregatorPrivate);
+
+ vagg->priv->current_caps = NULL;
+
+ g_mutex_init (&vagg->priv->lock);
+ g_mutex_init (&vagg->priv->setcaps_lock);
+ /* initialize variables */
+ gst_videoaggregator_reset (vagg);
+}
projects / platform / upstream / gstreamer.git / commitdiff