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ges: Add a framepositionner element used in ges-smart-mixer and ges-uri-source
It adds metadata on the buffers and the mixer parses them. This is done because we want to keep positionning properties and set them on the dynamic mixer pad. Conflicts: ges/Makefile.am
This commit is contained in:
Mathieu Duponchelle
Thibault Saunier
parent
b3fafa7928
commit
9e0632e353
6 changed files with 413 additions and 4 deletions
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@ -63,7 +63,8 @@ libges_@GST_API_VERSION@_la_SOURCES = \
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ges-effect-asset.c \
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ges-smart-adder.c \
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ges-smart-video-mixer.c \
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ges-utils.c
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ges-utils.c \
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gstframepositionner.c
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libges_@GST_API_VERSION@includedir = $(includedir)/gstreamer-@GST_API_VERSION@/ges/
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libges_@GST_API_VERSION@include_HEADERS = \
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@ -123,7 +124,8 @@ libges_@GST_API_VERSION@include_HEADERS = \
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ges-effect-asset.h \
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ges-smart-adder.h \
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ges-smart-video-mixer.h \
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ges-utils.h
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ges-utils.h \
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gstframepositionner.h
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noinst_HEADERS = \
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ges-internal.h \
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@ -17,6 +17,7 @@
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* along with this program. If not, see <http://www.gnu.org/licenses/>.";
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*/
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#include "gstframepositionner.h"
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#include "ges-types.h"
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#include "ges-internal.h"
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#include "ges-smart-video-mixer.h"
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@ -44,11 +45,14 @@ typedef struct _PadInfos
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GESSmartMixer *self;
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GstPad *mixer_pad;
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GstElement *bin;
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gulong probe_id;
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} PadInfos;
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static void
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destroy_pad (PadInfos * infos)
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{
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gst_pad_remove_probe (infos->mixer_pad, infos->probe_id);
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if (G_LIKELY (infos->bin)) {
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gst_element_set_state (infos->bin, GST_STATE_NULL);
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gst_element_unlink (infos->bin, infos->self->mixer);
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@ -57,9 +61,32 @@ destroy_pad (PadInfos * infos)
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if (infos->mixer_pad)
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gst_element_release_request_pad (infos->self->mixer, infos->mixer_pad);
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g_slice_free (PadInfos, infos);
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}
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/* These metadata will get set by the upstream framepositionner element,
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added in the video sources' bin */
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static GstPadProbeReturn
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parse_metadata (GstPad * mixer_pad, GstPadProbeInfo * info, gpointer unused)
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{
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GstFramePositionnerMeta *meta;
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meta =
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(GstFramePositionnerMeta *) gst_buffer_get_meta ((GstBuffer *) info->data,
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gst_frame_positionner_meta_api_get_type ());
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if (!meta) {
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GST_WARNING ("The current source should use a framepositionner");
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return GST_PAD_PROBE_OK;
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}
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g_object_set (mixer_pad, "alpha", meta->alpha, "xpos", meta->posx, "ypos",
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meta->posy, "zorder", meta->zorder, NULL);
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return GST_PAD_PROBE_OK;
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}
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/****************************************************
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* GstElement vmetods *
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****************************************************/
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@ -77,8 +104,6 @@ _request_new_pad (GstElement * element, GstPadTemplate * templ,
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gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (self->mixer),
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"sink_%u"), NULL, NULL);
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g_object_set (G_OBJECT (infos->mixer_pad), "alpha", 0.5, NULL);
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if (infos->mixer_pad == NULL) {
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GST_WARNING_OBJECT (element, "Could not get any pad from GstMixer");
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@ -111,6 +136,10 @@ _request_new_pad (GstElement * element, GstPadTemplate * templ,
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gst_element_add_pad (GST_ELEMENT (infos->bin), tmpghost);
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gst_pad_link (tmpghost, infos->mixer_pad);
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infos->probe_id =
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gst_pad_add_probe (infos->mixer_pad, GST_PAD_PROBE_TYPE_BUFFER,
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(GstPadProbeCallback) parse_metadata, NULL, NULL);
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LOCK (self);
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g_hash_table_insert (self->pads_infos, ghost, infos);
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UNLOCK (self);
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@ -32,10 +32,13 @@
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#include "ges-uri-source.h"
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#include "ges-uri-asset.h"
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#include "ges-extractable.h"
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#include "ges-layer.h"
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#include "gstframepositionner.h"
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struct _GESUriSourcePrivate
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{
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GHashTable *props_hashtable;
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GstFramePositionner *positionner;
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};
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enum
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@ -185,6 +188,23 @@ _sync_element_to_layer_property_float (GESTrackElement * trksrc,
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/* TrackElement VMethods */
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static void
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update_z_order_cb (GESClip * clip, GParamSpec * arg G_GNUC_UNUSED,
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GESUriSource * self)
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{
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GESLayer *layer = ges_clip_get_layer (clip);
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if (layer == NULL)
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return;
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/* 10000 is the max value of zorder on videomixerpad, hardcoded */
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g_object_set (self->priv->positionner, "zorder",
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10000 - ges_layer_get_priority (layer), NULL);
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gst_object_unref (layer);
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}
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static GstElement *
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ges_uri_source_create_element (GESTrackElement * trksrc)
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{
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@ -192,6 +212,8 @@ ges_uri_source_create_element (GESTrackElement * trksrc)
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GESTrack *track;
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GstElement *decodebin;
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GstElement *topbin, *volume;
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GstElement *positionner;
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GESTimelineElement *parent;
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self = (GESUriSource *) trksrc;
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track = ges_track_element_get_track (trksrc);
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@ -210,6 +232,27 @@ ges_uri_source_create_element (GESTrackElement * trksrc)
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_add_element_properties_to_hashtable (self, volume, "volume", "mute",
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NULL);
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break;
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case GES_TRACK_TYPE_VIDEO:
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decodebin = gst_element_factory_make ("uridecodebin", NULL);
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/* That positionner will add metadata to buffers according to its
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properties, acting like a proxy for our smart-mixer dynamic pads. */
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positionner =
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gst_element_factory_make ("framepositionner", "frame_tagger");
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_add_element_properties_to_hashtable (self, positionner, "alpha", "posx",
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"posy", NULL);
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topbin = _create_bin ("video-src-bin", decodebin, positionner, NULL);
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parent = ges_timeline_element_get_parent (GES_TIMELINE_ELEMENT (trksrc));
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if (parent) {
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self->priv->positionner = GST_FRAME_POSITIONNER (positionner);
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g_signal_connect (parent, "notify::layer",
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(GCallback) update_z_order_cb, trksrc);
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update_z_order_cb (GES_CLIP (parent), NULL, self);
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gst_object_unref (parent);
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} else {
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GST_WARNING ("No parent timeline element, SHOULD NOT HAPPEN");
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}
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break;
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default:
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decodebin = gst_element_factory_make ("uridecodebin", NULL);
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topbin = _create_bin ("video-src-bin", decodebin, NULL);
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@ -347,6 +390,7 @@ ges_track_filesource_init (GESUriSource * self)
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self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
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GES_TYPE_URI_SOURCE, GESUriSourcePrivate);
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self->priv->props_hashtable = NULL;
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self->priv->positionner = NULL;
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}
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/**
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@ -19,6 +19,7 @@
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*/
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#include <ges/ges.h>
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#include "ges/gstframepositionner.h"
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#include "ges-internal.h"
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#define GES_GNONLIN_VERSION_NEEDED_MAJOR 0
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@ -93,6 +94,9 @@ ges_init (void)
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if (!ges_check_gnonlin_availability ())
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return FALSE;
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gst_element_register (NULL, "framepositionner", 0,
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GST_TYPE_FRAME_POSITIONNER);
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/* TODO: user-defined types? */
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ges_initialized = TRUE;
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263
ges/gstframepositionner.c
Normal file
263
ges/gstframepositionner.c
Normal file
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@ -0,0 +1,263 @@
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/* GStreamer
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* Copyright (C) 2013 Mathieu Duponchelle <mduponchelle1@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
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* Boston, MA 02110-1335, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include "gstframepositionner.h"
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static void gst_frame_positionner_set_property (GObject * object,
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guint property_id, const GValue * value, GParamSpec * pspec);
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static void gst_frame_positionner_get_property (GObject * object,
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guint property_id, GValue * value, GParamSpec * pspec);
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static GstFlowReturn gst_frame_positionner_transform_ip (GstBaseTransform *
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trans, GstBuffer * buf);
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static gboolean
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gst_frame_positionner_meta_transform (GstBuffer * dest, GstMeta * meta,
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GstBuffer * buffer, GQuark type, gpointer data);
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enum
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{
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PROP_0,
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PROP_ALPHA,
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PROP_POSX,
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PROP_POSY,
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PROP_ZORDER
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};
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static GstStaticPadTemplate gst_frame_positionner_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("video/x-raw")
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);
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static GstStaticPadTemplate gst_frame_positionner_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("video/x-raw")
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);
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G_DEFINE_TYPE (GstFramePositionner, gst_frame_positionner,
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GST_TYPE_BASE_TRANSFORM);
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static void
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gst_frame_positionner_class_init (GstFramePositionnerClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstBaseTransformClass *base_transform_class =
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GST_BASE_TRANSFORM_CLASS (klass);
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gst_element_class_add_pad_template (GST_ELEMENT_CLASS (klass),
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gst_static_pad_template_get (&gst_frame_positionner_src_template));
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gst_element_class_add_pad_template (GST_ELEMENT_CLASS (klass),
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gst_static_pad_template_get (&gst_frame_positionner_sink_template));
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gobject_class->set_property = gst_frame_positionner_set_property;
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gobject_class->get_property = gst_frame_positionner_get_property;
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base_transform_class->transform_ip =
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GST_DEBUG_FUNCPTR (gst_frame_positionner_transform_ip);
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/**
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* gstframepositionner:alpha:
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*
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* The desired alpha for the stream.
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*/
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g_object_class_install_property (gobject_class, PROP_ALPHA,
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g_param_spec_double ("alpha", "alpha", "alpha of the stream",
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0.0, 1.0, 1.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
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/**
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* gstframepositionner:posx:
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*
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* The desired x position for the stream.
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*/
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g_object_class_install_property (gobject_class, PROP_ALPHA,
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g_param_spec_int ("posx", "posx", "x position of the stream",
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G_MININT, G_MAXINT, 0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
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/**
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* gstframepositionner:posy:
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*
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* The desired y position for the stream.
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*/
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g_object_class_install_property (gobject_class, PROP_ALPHA,
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g_param_spec_int ("posy", "posy", "y position of the stream",
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G_MININT, G_MAXINT, 0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
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/**
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* gstframepositionner:zorder:
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*
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* The desired z order for the stream.
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*/
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g_object_class_install_property (gobject_class, PROP_ZORDER,
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g_param_spec_uint ("zorder", "zorder", "z order of the stream",
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0, 10000, 0, G_PARAM_READWRITE));
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gst_element_class_set_static_metadata (GST_ELEMENT_CLASS (klass),
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"frame positionner", "Metadata",
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"This element provides with tagging facilities",
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"mduponchelle1@gmail.com");
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}
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static void
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gst_frame_positionner_init (GstFramePositionner * framepositionner)
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{
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framepositionner->alpha = 1.0;
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framepositionner->posx = 0.0;
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framepositionner->posy = 0.0;
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framepositionner->zorder = 0;
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}
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void
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gst_frame_positionner_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstFramePositionner *framepositionner = GST_FRAME_POSITIONNER (object);
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GST_OBJECT_LOCK (framepositionner);
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switch (property_id) {
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case PROP_ALPHA:
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framepositionner->alpha = g_value_get_double (value);
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break;
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case PROP_POSX:
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framepositionner->posx = g_value_get_int (value);
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break;
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case PROP_POSY:
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framepositionner->posy = g_value_get_int (value);
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break;
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case PROP_ZORDER:
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framepositionner->zorder = g_value_get_uint (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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GST_OBJECT_UNLOCK (framepositionner);
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}
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void
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gst_frame_positionner_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GstFramePositionner *framepositionner = GST_FRAME_POSITIONNER (object);
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GST_DEBUG_OBJECT (framepositionner, "get_property");
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switch (property_id) {
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case PROP_ALPHA:
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g_value_set_double (value, framepositionner->alpha);
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break;
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case PROP_POSX:
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g_value_set_int (value, framepositionner->posx);
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break;
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case PROP_POSY:
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g_value_set_int (value, framepositionner->posy);
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break;
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case PROP_ZORDER:
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g_value_set_uint (value, framepositionner->zorder);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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GType
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gst_frame_positionner_meta_api_get_type (void)
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{
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static volatile GType type;
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static const gchar *tags[] = { "alpha", "posx", "posy", "zorder", NULL };
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if (g_once_init_enter (&type)) {
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GType _type = gst_meta_api_type_register ("GstFramePositionnerApi", tags);
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g_once_init_leave (&type, _type);
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}
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return type;
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}
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static const GstMetaInfo *
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gst_frame_positionner_get_info (void)
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{
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static const GstMetaInfo *meta_info = NULL;
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if (g_once_init_enter (&meta_info)) {
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const GstMetaInfo *meta =
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gst_meta_register (gst_frame_positionner_meta_api_get_type (),
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"GstFramePositionnerMeta",
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sizeof (GstFramePositionnerMeta), (GstMetaInitFunction) NULL,
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(GstMetaFreeFunction) NULL,
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(GstMetaTransformFunction) gst_frame_positionner_meta_transform);
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g_once_init_leave (&meta_info, meta);
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}
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return meta_info;
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}
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static gboolean
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gst_frame_positionner_meta_transform (GstBuffer * dest, GstMeta * meta,
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GstBuffer * buffer, GQuark type, gpointer data)
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{
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GstFramePositionnerMeta *dmeta, *smeta;
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smeta = (GstFramePositionnerMeta *) meta;
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if (GST_META_TRANSFORM_IS_COPY (type)) {
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/* only copy if the complete data is copied as well */
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dmeta =
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(GstFramePositionnerMeta *) gst_buffer_add_meta (dest,
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gst_frame_positionner_get_info (), NULL);
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dmeta->alpha = smeta->alpha;
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dmeta->posx = smeta->posx;
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dmeta->posy = smeta->posy;
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dmeta->zorder = smeta->zorder;
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_frame_positionner_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
|
||||
{
|
||||
GstFramePositionnerMeta *meta;
|
||||
GstFramePositionner *framepositionner = GST_FRAME_POSITIONNER (trans);
|
||||
GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buf);
|
||||
|
||||
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
|
||||
gst_object_sync_values (GST_OBJECT (trans), timestamp);
|
||||
}
|
||||
|
||||
meta =
|
||||
(GstFramePositionnerMeta *) gst_buffer_add_meta (buf,
|
||||
gst_frame_positionner_get_info (), NULL);
|
||||
|
||||
GST_OBJECT_LOCK (framepositionner);
|
||||
meta->alpha = framepositionner->alpha;
|
||||
meta->posx = framepositionner->posx;
|
||||
meta->posy = framepositionner->posy;
|
||||
meta->zorder = framepositionner->zorder;
|
||||
GST_OBJECT_UNLOCK (framepositionner);
|
||||
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
67
ges/gstframepositionner.h
Normal file
67
ges/gstframepositionner.h
Normal file
|
|
@ -0,0 +1,67 @@
|
|||
/* GStreamer
|
||||
* Copyright (C) 2013 Mathieu Duponchelle <mduponchelle1@gmail.com>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef _GST_FRAME_POSITIONNER_H_
|
||||
#define _GST_FRAME_POSITIONNER_H_
|
||||
|
||||
#include <gst/base/gstbasetransform.h>
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
#define GST_TYPE_FRAME_POSITIONNER (gst_frame_positionner_get_type())
|
||||
#define GST_FRAME_POSITIONNER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FRAME_POSITIONNER,GstFramePositionner))
|
||||
#define GST_FRAME_POSITIONNER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FRAME_POSITIONNER,GstFramePositionnerClass))
|
||||
#define GST_IS_FRAME_POSITIONNER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FRAME_POSITIONNER))
|
||||
#define GST_IS_FRAME_POSITIONNER_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FRAME_POSITIONNER))
|
||||
|
||||
typedef struct _GstFramePositionner GstFramePositionner;
|
||||
typedef struct _GstFramePositionnerClass GstFramePositionnerClass;
|
||||
typedef struct _GstFramePositionnerMeta GstFramePositionnerMeta;
|
||||
|
||||
struct _GstFramePositionner
|
||||
{
|
||||
GstBaseTransform base_framepositionner;
|
||||
|
||||
gdouble alpha;
|
||||
gint posx;
|
||||
gint posy;
|
||||
guint zorder;
|
||||
};
|
||||
|
||||
struct _GstFramePositionnerClass
|
||||
{
|
||||
GstBaseTransformClass base_framepositionner_class;
|
||||
};
|
||||
|
||||
struct _GstFramePositionnerMeta {
|
||||
GstMeta meta;
|
||||
|
||||
gdouble alpha;
|
||||
gint posx;
|
||||
gint posy;
|
||||
guint zorder;
|
||||
};
|
||||
|
||||
GType gst_frame_positionner_get_type (void);
|
||||
GType
|
||||
gst_frame_positionner_meta_api_get_type (void);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif
|
||||
Loading…
Reference in a new issue