/* GStreamer * Copyright (C) <2007> Wim Taymans * * 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include "gstplaysink.h" GST_DEBUG_CATEGORY_STATIC (gst_play_sink_debug); #define GST_CAT_DEFAULT gst_play_sink_debug #define VOLUME_MAX_DOUBLE 10.0 #define DEFAULT_FLAGS GST_PLAY_FLAG_AUDIO | GST_PLAY_FLAG_VIDEO | GST_PLAY_FLAG_TEXT | \ GST_PLAY_FLAG_SOFT_VOLUME #define GST_PLAY_CHAIN(c) ((GstPlayChain *)(c)) /* holds the common data fields for the audio and video pipelines. We keep them * in a structure to more easily have all the info available. */ typedef struct { GstPlaySink *playsink; GstElement *bin; gboolean added; gboolean activated; gboolean raw; } GstPlayChain; typedef struct { GstPlayChain chain; GstPad *sinkpad; GstElement *queue; GstElement *conv; GstElement *resample; GstElement *volume; /* element with the volume property */ gboolean sink_volume; /* if the volume was provided by the sink */ GstElement *mute; /* element with the mute property */ GstElement *sink; } GstPlayAudioChain; typedef struct { GstPlayChain chain; GstPad *sinkpad; GstElement *queue; GstElement *conv; GstElement *scale; GstElement *sink; gboolean async; } GstPlayVideoChain; typedef struct { GstPlayChain chain; GstPad *sinkpad; GstElement *queue; GstElement *conv; GstElement *resample; GstPad *blockpad; /* srcpad of resample, used for switching the vis */ GstPad *vissinkpad; /* visualisation sinkpad, */ GstElement *vis; GstPad *vissrcpad; /* visualisation srcpad, */ GstPad *srcpad; /* outgoing srcpad, used to connect to the next * chain */ } GstPlayVisChain; typedef struct { GstPlayChain chain; GstPad *sinkpad; GstElement *queue; GstElement *identity; GstElement *overlay; GstPad *videosinkpad; GstPad *textsinkpad; GstPad *srcpad; /* outgoing srcpad, used to connect to the next * chain */ GstElement *sink; /* custom sink to receive subtitle buffers */ } GstPlayTextChain; #define GST_PLAY_SINK_GET_LOCK(playsink) (&((GstPlaySink *)playsink)->lock) #define GST_PLAY_SINK_LOCK(playsink) g_static_rec_mutex_lock (GST_PLAY_SINK_GET_LOCK (playsink)) #define GST_PLAY_SINK_UNLOCK(playsink) g_static_rec_mutex_unlock (GST_PLAY_SINK_GET_LOCK (playsink)) struct _GstPlaySink { GstBin bin; GStaticRecMutex lock; gboolean async_pending; gboolean need_async_start; GstPlayFlags flags; /* chains */ GstPlayAudioChain *audiochain; GstPlayVideoChain *videochain; GstPlayVisChain *vischain; GstPlayTextChain *textchain; /* audio */ GstPad *audio_pad; gboolean audio_pad_raw; /* audio tee */ GstElement *audio_tee; GstPad *audio_tee_sink; GstPad *audio_tee_asrc; GstPad *audio_tee_vissrc; /* video */ GstPad *video_pad; gboolean video_pad_raw; /* text */ GstPad *text_pad; /* properties */ GstElement *audio_sink; GstElement *video_sink; GstElement *visualisation; GstElement *text_sink; gdouble volume; gboolean mute; gchar *font_desc; /* font description */ guint connection_speed; /* connection speed in bits/sec (0 = unknown) */ gint count; gboolean volume_changed; /* volume/mute changed while no audiochain */ gboolean mute_changed; /* ... has been created yet */ }; struct _GstPlaySinkClass { GstBinClass parent_class; gboolean (*reconfigure) (GstPlaySink * playsink); }; static GstStaticPadTemplate audiorawtemplate = GST_STATIC_PAD_TEMPLATE ("audio_raw_sink", GST_PAD_SINK, GST_PAD_REQUEST, GST_STATIC_CAPS_ANY); static GstStaticPadTemplate audiotemplate = GST_STATIC_PAD_TEMPLATE ("audio_sink", GST_PAD_SINK, GST_PAD_REQUEST, GST_STATIC_CAPS_ANY); static GstStaticPadTemplate videorawtemplate = GST_STATIC_PAD_TEMPLATE ("video_raw_sink", GST_PAD_SINK, GST_PAD_REQUEST, GST_STATIC_CAPS_ANY); static GstStaticPadTemplate videotemplate = GST_STATIC_PAD_TEMPLATE ("video_sink", GST_PAD_SINK, GST_PAD_REQUEST, GST_STATIC_CAPS_ANY); static GstStaticPadTemplate texttemplate = GST_STATIC_PAD_TEMPLATE ("text_sink", GST_PAD_SINK, GST_PAD_REQUEST, GST_STATIC_CAPS_ANY); /* props */ enum { PROP_0, PROP_FLAGS, PROP_MUTE, PROP_VOLUME, PROP_FONT_DESC, PROP_VIS_PLUGIN, PROP_LAST }; /* signals */ enum { LAST_SIGNAL }; static void gst_play_sink_class_init (GstPlaySinkClass * klass); static void gst_play_sink_init (GstPlaySink * playsink); static void gst_play_sink_dispose (GObject * object); static void gst_play_sink_finalize (GObject * object); static void gst_play_sink_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * spec); static void gst_play_sink_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * spec); static GstPad *gst_play_sink_request_new_pad (GstElement * element, GstPadTemplate * templ, const gchar * name); static void gst_play_sink_release_request_pad (GstElement * element, GstPad * pad); static gboolean gst_play_sink_send_event (GstElement * element, GstEvent * event); static GstStateChangeReturn gst_play_sink_change_state (GstElement * element, GstStateChange transition); static void gst_play_sink_handle_message (GstBin * bin, GstMessage * message); /* static guint gst_play_sink_signals[LAST_SIGNAL] = { 0 }; */ G_DEFINE_TYPE (GstPlaySink, gst_play_sink, GST_TYPE_BIN); static void gst_play_sink_class_init (GstPlaySinkClass * klass) { GObjectClass *gobject_klass; GstElementClass *gstelement_klass; GstBinClass *gstbin_klass; gobject_klass = (GObjectClass *) klass; gstelement_klass = (GstElementClass *) klass; gstbin_klass = (GstBinClass *) klass; gobject_klass->dispose = gst_play_sink_dispose; gobject_klass->finalize = gst_play_sink_finalize; gobject_klass->set_property = gst_play_sink_set_property; gobject_klass->get_property = gst_play_sink_get_property; /** * GstPlaySink:flags * * Control the behaviour of playsink. */ g_object_class_install_property (gobject_klass, PROP_FLAGS, g_param_spec_flags ("flags", "Flags", "Flags to control behaviour", GST_TYPE_PLAY_FLAGS, DEFAULT_FLAGS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); /** * GstPlaySink:volume: * * Get or set the current audio stream volume. 1.0 means 100%, * 0.0 means mute. This uses a linear volume scale. * */ g_object_class_install_property (gobject_klass, PROP_VOLUME, g_param_spec_double ("volume", "Volume", "The audio volume, 1.0=100%", 0.0, VOLUME_MAX_DOUBLE, 1.0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_klass, PROP_MUTE, g_param_spec_boolean ("mute", "Mute", "Mute the audio channel without changing the volume", FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_klass, PROP_FONT_DESC, g_param_spec_string ("subtitle-font-desc", "Subtitle font description", "Pango font description of font " "to be used for subtitle rendering", NULL, G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_klass, PROP_VIS_PLUGIN, g_param_spec_object ("vis-plugin", "Vis plugin", "the visualization element to use (NULL = default)", GST_TYPE_ELEMENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_signal_new ("reconfigure", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstPlaySinkClass, reconfigure), NULL, NULL, gst_marshal_BOOLEAN__VOID, G_TYPE_BOOLEAN, 0, G_TYPE_NONE); gst_element_class_add_pad_template (gstelement_klass, gst_static_pad_template_get (&audiorawtemplate)); gst_element_class_add_pad_template (gstelement_klass, gst_static_pad_template_get (&audiotemplate)); gst_element_class_add_pad_template (gstelement_klass, gst_static_pad_template_get (&videorawtemplate)); gst_element_class_add_pad_template (gstelement_klass, gst_static_pad_template_get (&videotemplate)); gst_element_class_add_pad_template (gstelement_klass, gst_static_pad_template_get (&texttemplate)); gst_element_class_set_details_simple (gstelement_klass, "Player Sink", "Generic/Bin/Sink", "Convenience sink for multiple streams", "Wim Taymans "); gstelement_klass->change_state = GST_DEBUG_FUNCPTR (gst_play_sink_change_state); gstelement_klass->send_event = GST_DEBUG_FUNCPTR (gst_play_sink_send_event); gstelement_klass->request_new_pad = GST_DEBUG_FUNCPTR (gst_play_sink_request_new_pad); gstelement_klass->release_pad = GST_DEBUG_FUNCPTR (gst_play_sink_release_request_pad); gstbin_klass->handle_message = GST_DEBUG_FUNCPTR (gst_play_sink_handle_message); klass->reconfigure = GST_DEBUG_FUNCPTR (gst_play_sink_reconfigure); } static void gst_play_sink_init (GstPlaySink * playsink) { /* init groups */ playsink->video_sink = NULL; playsink->audio_sink = NULL; playsink->visualisation = NULL; playsink->text_sink = NULL; playsink->volume = 1.0; playsink->font_desc = NULL; playsink->flags = DEFAULT_FLAGS; g_static_rec_mutex_init (&playsink->lock); GST_OBJECT_FLAG_SET (playsink, GST_ELEMENT_IS_SINK); } static void free_chain (GstPlayChain * chain) { if (chain) { if (chain->bin) gst_object_unref (chain->bin); g_free (chain); } } static void gst_play_sink_dispose (GObject * object) { GstPlaySink *playsink; playsink = GST_PLAY_SINK (object); if (playsink->audio_sink != NULL) { gst_element_set_state (playsink->audio_sink, GST_STATE_NULL); gst_object_unref (playsink->audio_sink); playsink->audio_sink = NULL; } if (playsink->video_sink != NULL) { gst_element_set_state (playsink->video_sink, GST_STATE_NULL); gst_object_unref (playsink->video_sink); playsink->video_sink = NULL; } if (playsink->visualisation != NULL) { gst_element_set_state (playsink->visualisation, GST_STATE_NULL); gst_object_unref (playsink->visualisation); playsink->visualisation = NULL; } if (playsink->text_sink != NULL) { gst_element_set_state (playsink->text_sink, GST_STATE_NULL); gst_object_unref (playsink->text_sink); playsink->text_sink = NULL; } free_chain ((GstPlayChain *) playsink->videochain); playsink->videochain = NULL; free_chain ((GstPlayChain *) playsink->audiochain); playsink->audiochain = NULL; free_chain ((GstPlayChain *) playsink->vischain); playsink->vischain = NULL; free_chain ((GstPlayChain *) playsink->textchain); playsink->textchain = NULL; if (playsink->audio_tee_sink) { gst_object_unref (playsink->audio_tee_sink); playsink->audio_tee_sink = NULL; } if (playsink->audio_tee_vissrc) { gst_element_release_request_pad (playsink->audio_tee, playsink->audio_tee_vissrc); gst_object_unref (playsink->audio_tee_vissrc); playsink->audio_tee_vissrc = NULL; } if (playsink->audio_tee_asrc) { gst_element_release_request_pad (playsink->audio_tee, playsink->audio_tee_asrc); gst_object_unref (playsink->audio_tee_asrc); playsink->audio_tee_asrc = NULL; } g_free (playsink->font_desc); playsink->font_desc = NULL; G_OBJECT_CLASS (gst_play_sink_parent_class)->dispose (object); } static void gst_play_sink_finalize (GObject * object) { GstPlaySink *playsink; playsink = GST_PLAY_SINK (object); g_static_rec_mutex_free (&playsink->lock); G_OBJECT_CLASS (gst_play_sink_parent_class)->finalize (object); } void gst_play_sink_set_sink (GstPlaySink * playsink, GstPlaySinkType type, GstElement * sink) { GstElement **elem = NULL, *old = NULL; GST_LOG ("Setting sink %" GST_PTR_FORMAT " as sink type %d", sink, type); GST_PLAY_SINK_LOCK (playsink); switch (type) { case GST_PLAY_SINK_TYPE_AUDIO: case GST_PLAY_SINK_TYPE_AUDIO_RAW: elem = &playsink->audio_sink; break; case GST_PLAY_SINK_TYPE_VIDEO: case GST_PLAY_SINK_TYPE_VIDEO_RAW: elem = &playsink->video_sink; break; case GST_PLAY_SINK_TYPE_TEXT: elem = &playsink->text_sink; break; default: break; } if (elem) { old = *elem; if (sink) gst_object_ref (sink); *elem = sink; } GST_PLAY_SINK_UNLOCK (playsink); if (old) { if (old != sink) gst_element_set_state (old, GST_STATE_NULL); gst_object_unref (old); } } GstElement * gst_play_sink_get_sink (GstPlaySink * playsink, GstPlaySinkType type) { GstElement *result = NULL; GstElement *elem = NULL, *chainp = NULL; GST_PLAY_SINK_LOCK (playsink); switch (type) { case GST_PLAY_SINK_TYPE_AUDIO: { GstPlayAudioChain *chain; if ((chain = (GstPlayAudioChain *) playsink->audiochain)) chainp = chain->sink; elem = playsink->audio_sink; break; } case GST_PLAY_SINK_TYPE_VIDEO: { GstPlayVideoChain *chain; if ((chain = (GstPlayVideoChain *) playsink->videochain)) chainp = chain->sink; elem = playsink->video_sink; break; } case GST_PLAY_SINK_TYPE_TEXT: { GstPlayTextChain *chain; if ((chain = (GstPlayTextChain *) playsink->textchain)) chainp = chain->sink; elem = playsink->text_sink; break; } default: break; } if (chainp) { /* we have an active chain with a sink, get the sink */ result = gst_object_ref (chainp); } /* nothing found, return last configured sink */ if (result == NULL && elem) result = gst_object_ref (elem); GST_PLAY_SINK_UNLOCK (playsink); return result; } static void gst_play_sink_vis_unblocked (GstPad * tee_pad, gboolean blocked, gpointer user_data) { GstPlaySink *playsink; playsink = GST_PLAY_SINK (user_data); /* nothing to do here, we need a dummy callback here to make the async call * non-blocking. */ GST_DEBUG_OBJECT (playsink, "vis pad unblocked"); } static void gst_play_sink_vis_blocked (GstPad * tee_pad, gboolean blocked, gpointer user_data) { GstPlaySink *playsink; GstPlayVisChain *chain; playsink = GST_PLAY_SINK (user_data); GST_PLAY_SINK_LOCK (playsink); GST_DEBUG_OBJECT (playsink, "vis pad blocked"); /* now try to change the plugin in the running vis chain */ if (!(chain = (GstPlayVisChain *) playsink->vischain)) goto done; /* unlink the old plugin and unghost the pad */ gst_pad_unlink (chain->blockpad, chain->vissinkpad); gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (chain->srcpad), NULL); /* set the old plugin to NULL and remove */ gst_element_set_state (chain->vis, GST_STATE_NULL); gst_bin_remove (GST_BIN_CAST (chain->chain.bin), chain->vis); /* add new plugin and set state to playing */ chain->vis = playsink->visualisation; gst_bin_add (GST_BIN_CAST (chain->chain.bin), chain->vis); gst_element_set_state (chain->vis, GST_STATE_PLAYING); /* get pads */ chain->vissinkpad = gst_element_get_static_pad (chain->vis, "sink"); chain->vissrcpad = gst_element_get_static_pad (chain->vis, "src"); /* link pads */ gst_pad_link (chain->blockpad, chain->vissinkpad); gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (chain->srcpad), chain->vissrcpad); done: /* Unblock the pad */ gst_pad_set_blocked_async (tee_pad, FALSE, gst_play_sink_vis_unblocked, playsink); GST_PLAY_SINK_UNLOCK (playsink); } void gst_play_sink_set_vis_plugin (GstPlaySink * playsink, GstElement * vis) { GstPlayVisChain *chain; /* setting NULL means creating the default vis plugin */ if (vis == NULL) vis = gst_element_factory_make ("goom", "vis"); /* simply return if we don't have a vis plugin here */ if (vis == NULL) return; GST_PLAY_SINK_LOCK (playsink); /* first store the new vis */ if (playsink->visualisation) gst_object_unref (playsink->visualisation); /* take ownership */ gst_object_ref_sink (vis); playsink->visualisation = vis; /* now try to change the plugin in the running vis chain, if we have no chain, * we don't bother, any future vis chain will be created with the new vis * plugin. */ if (!(chain = (GstPlayVisChain *) playsink->vischain)) goto done; /* block the pad, the next time the callback is called we can change the * visualisation. It's possible that this never happens or that the pad was * already blocked. If the callback never happens, we don't have new data so * we don't need the new vis plugin. If the pad was already blocked, the * function returns FALSE but the previous pad block will do the right thing * anyway. */ GST_DEBUG_OBJECT (playsink, "blocking vis pad"); gst_pad_set_blocked_async (chain->blockpad, TRUE, gst_play_sink_vis_blocked, playsink); done: GST_PLAY_SINK_UNLOCK (playsink); return; } GstElement * gst_play_sink_get_vis_plugin (GstPlaySink * playsink) { GstElement *result = NULL; GstPlayVisChain *chain; GST_PLAY_SINK_LOCK (playsink); if ((chain = (GstPlayVisChain *) playsink->vischain)) { /* we have an active chain, get the sink */ if (chain->vis) result = gst_object_ref (chain->vis); } /* nothing found, return last configured sink */ if (result == NULL && playsink->visualisation) result = gst_object_ref (playsink->visualisation); GST_PLAY_SINK_UNLOCK (playsink); return result; } void gst_play_sink_set_volume (GstPlaySink * playsink, gdouble volume) { GstPlayAudioChain *chain; GST_PLAY_SINK_LOCK (playsink); playsink->volume = volume; chain = (GstPlayAudioChain *) playsink->audiochain; if (chain && chain->volume) { GST_LOG_OBJECT (playsink, "elements: volume=%" GST_PTR_FORMAT ", mute=%" GST_PTR_FORMAT "; new volume=%.03f, mute=%d", chain->volume, chain->mute, volume, playsink->mute); /* if there is a mute element or we are not muted, set the volume */ if (chain->mute || !playsink->mute) g_object_set (chain->volume, "volume", volume, NULL); } else { GST_LOG_OBJECT (playsink, "no volume element"); playsink->volume_changed = TRUE; } GST_PLAY_SINK_UNLOCK (playsink); } gdouble gst_play_sink_get_volume (GstPlaySink * playsink) { gdouble result; GstPlayAudioChain *chain; GST_PLAY_SINK_LOCK (playsink); chain = (GstPlayAudioChain *) playsink->audiochain; result = playsink->volume; if (chain && chain->volume) { if (chain->mute || !playsink->mute) { g_object_get (chain->volume, "volume", &result, NULL); playsink->volume = result; } } GST_PLAY_SINK_UNLOCK (playsink); return result; } void gst_play_sink_set_mute (GstPlaySink * playsink, gboolean mute) { GstPlayAudioChain *chain; GST_PLAY_SINK_LOCK (playsink); playsink->mute = mute; chain = (GstPlayAudioChain *) playsink->audiochain; if (chain) { if (chain->mute) { g_object_set (chain->mute, "mute", mute, NULL); } else if (chain->volume) { if (mute) g_object_set (chain->volume, "volume", (gdouble) 0.0, NULL); else g_object_set (chain->volume, "volume", (gdouble) playsink->volume, NULL); } } else { playsink->mute_changed = TRUE; } GST_PLAY_SINK_UNLOCK (playsink); } gboolean gst_play_sink_get_mute (GstPlaySink * playsink) { gboolean result; GstPlayAudioChain *chain; GST_PLAY_SINK_LOCK (playsink); chain = (GstPlayAudioChain *) playsink->audiochain; if (chain && chain->mute) { g_object_get (chain->mute, "mute", &result, NULL); playsink->mute = result; } else { result = playsink->mute; } GST_PLAY_SINK_UNLOCK (playsink); return result; } static void post_missing_element_message (GstPlaySink * playsink, const gchar * name) { GstMessage *msg; msg = gst_missing_element_message_new (GST_ELEMENT_CAST (playsink), name); gst_element_post_message (GST_ELEMENT_CAST (playsink), msg); } static gboolean add_chain (GstPlayChain * chain, gboolean add) { if (chain->added == add) return TRUE; if (add) gst_bin_add (GST_BIN_CAST (chain->playsink), chain->bin); else { gst_bin_remove (GST_BIN_CAST (chain->playsink), chain->bin); /* we don't want to lose our sink status */ GST_OBJECT_FLAG_SET (chain->playsink, GST_ELEMENT_IS_SINK); } chain->added = add; return TRUE; } static gboolean activate_chain (GstPlayChain * chain, gboolean activate) { GstState state; if (chain->activated == activate) return TRUE; GST_OBJECT_LOCK (chain->playsink); state = GST_STATE_TARGET (chain->playsink); GST_OBJECT_UNLOCK (chain->playsink); if (activate) gst_element_set_state (chain->bin, state); else gst_element_set_state (chain->bin, GST_STATE_NULL); chain->activated = activate; return TRUE; } static gboolean element_is_sink (GstElement * element) { gboolean is_sink; GST_OBJECT_LOCK (element); is_sink = GST_OBJECT_FLAG_IS_SET (element, GST_ELEMENT_IS_SINK); GST_OBJECT_UNLOCK (element); GST_DEBUG_OBJECT (element, "is a sink: %s", (is_sink) ? "yes" : "no"); return is_sink; } static gboolean element_has_property (GstElement * element, const gchar * pname, GType type) { GParamSpec *pspec; pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (element), pname); if (pspec == NULL) { GST_DEBUG_OBJECT (element, "no %s property", pname); return FALSE; } if (type == G_TYPE_INVALID || type == pspec->value_type || g_type_is_a (pspec->value_type, type)) { GST_DEBUG_OBJECT (element, "has %s property of type %s", pname, (type == G_TYPE_INVALID) ? "any type" : g_type_name (type)); return TRUE; } GST_WARNING_OBJECT (element, "has %s property, but property is of type %s " "and we expected it to be of type %s", pname, g_type_name (pspec->value_type), g_type_name (type)); return FALSE; } typedef struct { const gchar *prop_name; GType prop_type; gboolean need_sink; } FindPropertyHelper; static gint find_property (GstElement * element, FindPropertyHelper * helper) { if (helper->need_sink && !element_is_sink (element)) { gst_object_unref (element); return 1; } if (!element_has_property (element, helper->prop_name, helper->prop_type)) { gst_object_unref (element); return 1; } GST_INFO_OBJECT (element, "found %s with %s property", helper->prop_name, (helper->need_sink) ? "sink" : "element"); return 0; /* keep it */ } /* FIXME: why not move these functions into core? */ /* find a sink in the hierarchy with a property named @name. This function does * not increase the refcount of the returned object and thus remains valid as * long as the bin is valid. */ static GstElement * gst_play_sink_find_property_sinks (GstPlaySink * playsink, GstElement * obj, const gchar * name, GType expected_type) { GstElement *result = NULL; GstIterator *it; if (element_has_property (obj, name, expected_type)) { result = obj; } else if (GST_IS_BIN (obj)) { FindPropertyHelper helper = { name, expected_type, TRUE }; it = gst_bin_iterate_recurse (GST_BIN_CAST (obj)); result = gst_iterator_find_custom (it, (GCompareFunc) find_property, &helper); gst_iterator_free (it); /* we don't need the extra ref */ if (result) gst_object_unref (result); } return result; } /* find an object in the hierarchy with a property named @name */ static GstElement * gst_play_sink_find_property (GstPlaySink * playsink, GstElement * obj, const gchar * name, GType expected_type) { GstElement *result = NULL; GstIterator *it; if (GST_IS_BIN (obj)) { FindPropertyHelper helper = { name, expected_type, FALSE }; it = gst_bin_iterate_recurse (GST_BIN_CAST (obj)); result = gst_iterator_find_custom (it, (GCompareFunc) find_property, &helper); gst_iterator_free (it); } else { if (element_has_property (obj, name, expected_type)) { result = obj; gst_object_ref (obj); } } return result; } static void do_async_start (GstPlaySink * playsink) { GstMessage *message; if (!playsink->need_async_start) { GST_INFO_OBJECT (playsink, "no async_start needed"); return; } playsink->async_pending = TRUE; GST_INFO_OBJECT (playsink, "Sending async_start message"); message = gst_message_new_async_start (GST_OBJECT_CAST (playsink), FALSE); GST_BIN_CLASS (gst_play_sink_parent_class)->handle_message (GST_BIN_CAST (playsink), message); } static void do_async_done (GstPlaySink * playsink) { GstMessage *message; if (playsink->async_pending) { GST_INFO_OBJECT (playsink, "Sending async_done message"); message = gst_message_new_async_done (GST_OBJECT_CAST (playsink)); GST_BIN_CLASS (gst_play_sink_parent_class)->handle_message (GST_BIN_CAST (playsink), message); playsink->async_pending = FALSE; } playsink->need_async_start = FALSE; } /* try to change the state of an element. This function returns the element when * the state change could be performed. When this function returns NULL an error * occured and the element is unreffed if @unref is TRUE. */ static GstElement * try_element (GstPlaySink * playsink, GstElement * element, gboolean unref) { GstStateChangeReturn ret; if (element) { ret = gst_element_set_state (element, GST_STATE_READY); if (ret == GST_STATE_CHANGE_FAILURE) { GST_DEBUG_OBJECT (playsink, "failed state change.."); gst_element_set_state (element, GST_STATE_NULL); if (unref) gst_object_unref (element); element = NULL; } } return element; } /* make the element (bin) that contains the elements needed to perform * video display. * * +------------------------------------------------------------+ * | vbin | * | +-------+ +----------+ +----------+ +---------+ | * | | queue | |colorspace| |videoscale| |videosink| | * | +-sink src-sink src-sink src-sink | | * | | +-------+ +----------+ +----------+ +---------+ | * sink-+ | * +------------------------------------------------------------+ * */ static GstPlayVideoChain * gen_video_chain (GstPlaySink * playsink, gboolean raw, gboolean async, gboolean queue) { GstPlayVideoChain *chain; GstBin *bin; GstPad *pad; GstElement *head = NULL, *prev = NULL, *elem = NULL; chain = g_new0 (GstPlayVideoChain, 1); chain->chain.playsink = playsink; chain->chain.raw = raw; GST_DEBUG_OBJECT (playsink, "making video chain %p", chain); if (playsink->video_sink) { GST_DEBUG_OBJECT (playsink, "trying configured videosink"); chain->sink = try_element (playsink, playsink->video_sink, FALSE); } else { /* only try fallback if no specific sink was chosen */ if (chain->sink == NULL) { GST_DEBUG_OBJECT (playsink, "trying autovideosink"); elem = gst_element_factory_make ("autovideosink", "videosink"); chain->sink = try_element (playsink, elem, TRUE); } if (chain->sink == NULL) { /* if default sink from config.h is different then try it too */ if (strcmp (DEFAULT_VIDEOSINK, "autovideosink")) { GST_DEBUG_OBJECT (playsink, "trying " DEFAULT_VIDEOSINK); elem = gst_element_factory_make (DEFAULT_VIDEOSINK, "videosink"); chain->sink = try_element (playsink, elem, TRUE); } } } if (chain->sink == NULL) goto no_sinks; head = chain->sink; /* if we can disable async behaviour of the sink, we can avoid adding a * queue for the audio chain. */ elem = gst_play_sink_find_property_sinks (playsink, chain->sink, "async", G_TYPE_BOOLEAN); if (elem) { GST_DEBUG_OBJECT (playsink, "setting async property to %d on element %s", async, GST_ELEMENT_NAME (elem)); g_object_set (elem, "async", async, NULL); chain->async = async; } else { GST_DEBUG_OBJECT (playsink, "no async property on the sink"); chain->async = TRUE; } /* create a bin to hold objects, as we create them we add them to this bin so * that when something goes wrong we only need to unref the bin */ chain->chain.bin = gst_bin_new ("vbin"); bin = GST_BIN_CAST (chain->chain.bin); gst_object_ref_sink (bin); gst_bin_add (bin, chain->sink); if (queue) { /* decouple decoder from sink, this improves playback quite a lot since the * decoder can continue while the sink blocks for synchronisation. We don't * need a lot of buffers as this consumes a lot of memory and we don't want * too little because else we would be context switching too quickly. */ chain->queue = gst_element_factory_make ("queue", "vqueue"); g_object_set (G_OBJECT (chain->queue), "max-size-buffers", 3, "max-size-bytes", 0, "max-size-time", (gint64) 0, NULL); gst_bin_add (bin, chain->queue); head = prev = chain->queue; } else { head = chain->sink; prev = NULL; } if (raw && !(playsink->flags & GST_PLAY_FLAG_NATIVE_VIDEO)) { GST_DEBUG_OBJECT (playsink, "creating ffmpegcolorspace"); chain->conv = gst_element_factory_make ("ffmpegcolorspace", "vconv"); if (chain->conv == NULL) { post_missing_element_message (playsink, "ffmpegcolorspace"); GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN, (_("Missing element '%s' - check your GStreamer installation."), "ffmpegcolorspace"), ("video rendering might fail")); } else { gst_bin_add (bin, chain->conv); if (prev) { if (!gst_element_link_pads (prev, "src", chain->conv, "sink")) goto link_failed; } else { head = chain->conv; } prev = chain->conv; } GST_DEBUG_OBJECT (playsink, "creating videoscale"); chain->scale = gst_element_factory_make ("videoscale", "vscale"); if (chain->scale == NULL) { post_missing_element_message (playsink, "videoscale"); GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN, (_("Missing element '%s' - check your GStreamer installation."), "videoscale"), ("possibly a liboil version mismatch?")); } else { gst_bin_add (bin, chain->scale); if (prev) { if (!gst_element_link_pads (prev, "src", chain->scale, "sink")) goto link_failed; } else { head = chain->scale; } prev = chain->scale; } } if (prev) { GST_DEBUG_OBJECT (playsink, "linking to sink"); if (!gst_element_link_pads (prev, "src", chain->sink, NULL)) goto link_failed; } pad = gst_element_get_static_pad (head, "sink"); chain->sinkpad = gst_ghost_pad_new ("sink", pad); gst_object_unref (pad); gst_element_add_pad (chain->chain.bin, chain->sinkpad); return chain; /* ERRORS */ no_sinks: { if (!elem) { post_missing_element_message (playsink, "autovideosink"); if (strcmp (DEFAULT_VIDEOSINK, "autovideosink")) { post_missing_element_message (playsink, DEFAULT_VIDEOSINK); GST_ELEMENT_ERROR (playsink, CORE, MISSING_PLUGIN, (_("Both autovideosink and %s elements are missing."), DEFAULT_VIDEOSINK), (NULL)); } else { GST_ELEMENT_ERROR (playsink, CORE, MISSING_PLUGIN, (_("The autovideosink element is missing.")), (NULL)); } } else { if (strcmp (DEFAULT_VIDEOSINK, "autovideosink")) { GST_ELEMENT_ERROR (playsink, CORE, STATE_CHANGE, (_("Both autovideosink and %s elements are not working."), DEFAULT_VIDEOSINK), (NULL)); } else { GST_ELEMENT_ERROR (playsink, CORE, MISSING_PLUGIN, (_("The autovideosink element is not working.")), (NULL)); } } free_chain ((GstPlayChain *) chain); return NULL; } link_failed: { GST_ELEMENT_ERROR (playsink, CORE, PAD, (NULL), ("Failed to configure the video sink.")); free_chain ((GstPlayChain *) chain); return NULL; } } static gboolean setup_video_chain (GstPlaySink * playsink, gboolean raw, gboolean async, gboolean queue) { GstElement *elem; GstPlayVideoChain *chain; GstStateChangeReturn ret; chain = playsink->videochain; /* if the chain was active we don't do anything */ if (GST_PLAY_CHAIN (chain)->activated == TRUE) return TRUE; if (chain->chain.raw != raw) return FALSE; /* try to set the sink element to READY again */ ret = gst_element_set_state (chain->sink, GST_STATE_READY); if (ret == GST_STATE_CHANGE_FAILURE) return FALSE; /* if we can disable async behaviour of the sink, we can avoid adding a * queue for the audio chain. */ elem = gst_play_sink_find_property_sinks (playsink, chain->sink, "async", G_TYPE_BOOLEAN); if (elem) { GST_DEBUG_OBJECT (playsink, "setting async property to %d on element %s", async, GST_ELEMENT_NAME (elem)); g_object_set (elem, "async", async, NULL); chain->async = async; } else { GST_DEBUG_OBJECT (playsink, "no async property on the sink"); chain->async = TRUE; } return TRUE; } /* make an element for playback of video with subtitles embedded. * * +--------------------------------------------+ * | tbin | * | +--------+ +-----------------+ | * | | queue | | subtitleoverlay | | * video--src sink---video_sink | | * | +--------+ | src--src * text------------------text_sink | | * | +-----------------+ | * +--------------------------------------------+ * */ static GstPlayTextChain * gen_text_chain (GstPlaySink * playsink) { GstPlayTextChain *chain; GstBin *bin; GstElement *elem; GstPad *videosinkpad, *textsinkpad, *srcpad; chain = g_new0 (GstPlayTextChain, 1); chain->chain.playsink = playsink; GST_DEBUG_OBJECT (playsink, "making text chain %p", chain); chain->chain.bin = gst_bin_new ("tbin"); bin = GST_BIN_CAST (chain->chain.bin); gst_object_ref_sink (bin); videosinkpad = textsinkpad = srcpad = NULL; /* first try to hook the text pad to the custom sink */ if (playsink->text_sink) { GST_DEBUG_OBJECT (playsink, "trying configured textsink"); chain->sink = try_element (playsink, playsink->text_sink, FALSE); if (chain->sink) { elem = gst_play_sink_find_property_sinks (playsink, chain->sink, "async", G_TYPE_BOOLEAN); if (elem) { /* make sure the sparse subtitles don't participate in the preroll */ g_object_set (elem, "async", FALSE, NULL); /* we have a custom sink, this will be our textsinkpad */ textsinkpad = gst_element_get_static_pad (chain->sink, "sink"); if (textsinkpad) { /* we're all fine now and we can add the sink to the chain */ GST_DEBUG_OBJECT (playsink, "adding custom text sink"); gst_bin_add (bin, chain->sink); } else { GST_WARNING_OBJECT (playsink, "can't find a sink pad on custom text sink"); gst_object_unref (chain->sink); chain->sink = NULL; } /* try to set sync to true but it's no biggie when we can't */ if ((elem = gst_play_sink_find_property_sinks (playsink, chain->sink, "sync", G_TYPE_BOOLEAN))) g_object_set (elem, "sync", TRUE, NULL); } else { GST_WARNING_OBJECT (playsink, "can't find async property in custom text sink"); } } if (textsinkpad == NULL) { GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN, (_("Custom text sink element is not usable.")), ("fallback to default textoverlay")); } } if (textsinkpad == NULL) { if (!(playsink->flags & GST_PLAY_FLAG_NATIVE_VIDEO)) { /* make a little queue */ chain->queue = gst_element_factory_make ("queue", "vqueue"); g_object_set (G_OBJECT (chain->queue), "max-size-buffers", 3, "max-size-bytes", 0, "max-size-time", (gint64) 0, NULL); gst_bin_add (bin, chain->queue); videosinkpad = gst_element_get_static_pad (chain->queue, "sink"); chain->overlay = gst_element_factory_make ("subtitleoverlay", "suboverlay"); if (chain->overlay == NULL) { post_missing_element_message (playsink, "subtitleoverlay"); GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN, (_("Missing element '%s' - check your GStreamer installation."), "subtitleoverlay"), ("subtitle rendering disabled")); } else { gst_bin_add (bin, chain->overlay); g_object_set (G_OBJECT (chain->overlay), "silent", FALSE, NULL); if (playsink->font_desc) { g_object_set (G_OBJECT (chain->overlay), "font-desc", playsink->font_desc, NULL); } gst_element_link_pads (chain->queue, "src", chain->overlay, "video_sink"); textsinkpad = gst_element_get_static_pad (chain->overlay, "subtitle_sink"); srcpad = gst_element_get_static_pad (chain->overlay, "src"); } } } if (videosinkpad == NULL) { /* if we still don't have a videosink, we don't have an overlay. the only * thing we can do is insert an identity and ghost the src * and sink pads. */ chain->identity = gst_element_factory_make ("identity", "tidentity"); g_object_set (chain->identity, "signal-handoffs", FALSE, NULL); g_object_set (chain->identity, "silent", TRUE, NULL); gst_bin_add (bin, chain->identity); srcpad = gst_element_get_static_pad (chain->identity, "src"); videosinkpad = gst_element_get_static_pad (chain->identity, "sink"); } /* expose the ghostpads */ if (videosinkpad) { chain->videosinkpad = gst_ghost_pad_new ("sink", videosinkpad); gst_object_unref (videosinkpad); gst_element_add_pad (chain->chain.bin, chain->videosinkpad); } if (textsinkpad) { chain->textsinkpad = gst_ghost_pad_new ("text_sink", textsinkpad); gst_object_unref (textsinkpad); gst_element_add_pad (chain->chain.bin, chain->textsinkpad); } if (srcpad) { chain->srcpad = gst_ghost_pad_new ("src", srcpad); gst_object_unref (srcpad); gst_element_add_pad (chain->chain.bin, chain->srcpad); } return chain; } static void notify_volume_cb (GObject * object, GParamSpec * pspec, GstPlaySink * playsink) { gdouble vol; g_object_get (object, "volume", &vol, NULL); playsink->volume = vol; g_object_notify (G_OBJECT (playsink), "volume"); } static void notify_mute_cb (GObject * object, GParamSpec * pspec, GstPlaySink * playsink) { gboolean mute; g_object_get (object, "mute", &mute, NULL); playsink->mute = mute; g_object_notify (G_OBJECT (playsink), "mute"); } /* make the chain that contains the elements needed to perform * audio playback. * * We add a tee as the first element so that we can link the visualisation chain * to it when requested. * * +-------------------------------------------------------------+ * | abin | * | +---------+ +----------+ +---------+ +---------+ | * | |audioconv| |audioscale| | volume | |audiosink| | * | +-srck src-sink src-sink src-sink | | * | | +---------+ +----------+ +---------+ +---------+ | * sink-+ | * +-------------------------------------------------------------+ */ static GstPlayAudioChain * gen_audio_chain (GstPlaySink * playsink, gboolean raw, gboolean queue) { GstPlayAudioChain *chain; GstBin *bin; gboolean have_volume; GstPad *pad; GstElement *head, *prev, *elem = NULL; chain = g_new0 (GstPlayAudioChain, 1); chain->chain.playsink = playsink; chain->chain.raw = raw; GST_DEBUG_OBJECT (playsink, "making audio chain %p", chain); if (playsink->audio_sink) { GST_DEBUG_OBJECT (playsink, "trying configured audiosink %" GST_PTR_FORMAT, playsink->audio_sink); chain->sink = try_element (playsink, playsink->audio_sink, FALSE); } else { /* only try fallback if no specific sink was chosen */ if (chain->sink == NULL) { GST_DEBUG_OBJECT (playsink, "trying autoaudiosink"); elem = gst_element_factory_make ("autoaudiosink", "audiosink"); chain->sink = try_element (playsink, elem, TRUE); } if (chain->sink == NULL) { /* if default sink from config.h is different then try it too */ if (strcmp (DEFAULT_AUDIOSINK, "autoaudiosink")) { GST_DEBUG_OBJECT (playsink, "trying " DEFAULT_AUDIOSINK); elem = gst_element_factory_make (DEFAULT_AUDIOSINK, "audiosink"); chain->sink = try_element (playsink, elem, TRUE); } } } if (chain->sink == NULL) goto no_sinks; chain->chain.bin = gst_bin_new ("abin"); bin = GST_BIN_CAST (chain->chain.bin); gst_object_ref_sink (bin); gst_bin_add (bin, chain->sink); if (queue) { /* we have to add a queue when we need to decouple for the video sink in * visualisations */ GST_DEBUG_OBJECT (playsink, "adding audio queue"); chain->queue = gst_element_factory_make ("queue", "aqueue"); gst_bin_add (bin, chain->queue); prev = head = chain->queue; } else { head = chain->sink; prev = NULL; } /* check if the sink, or something within the sink, has the volume property. * If it does we don't need to add a volume element. */ elem = gst_play_sink_find_property_sinks (playsink, chain->sink, "volume", G_TYPE_DOUBLE); if (elem) { chain->volume = elem; g_signal_connect (chain->volume, "notify::volume", G_CALLBACK (notify_volume_cb), playsink); GST_DEBUG_OBJECT (playsink, "the sink has a volume property"); have_volume = TRUE; chain->sink_volume = TRUE; /* if the sink also has a mute property we can use this as well. We'll only * use the mute property if there is a volume property. We can simulate the * mute with the volume otherwise. */ chain->mute = gst_play_sink_find_property_sinks (playsink, chain->sink, "mute", G_TYPE_BOOLEAN); if (chain->mute) { GST_DEBUG_OBJECT (playsink, "the sink has a mute property"); g_signal_connect (chain->mute, "notify::mute", G_CALLBACK (notify_mute_cb), playsink); } /* use the sink to control the volume and mute */ if (playsink->volume_changed) { g_object_set (G_OBJECT (chain->volume), "volume", playsink->volume, NULL); playsink->volume_changed = FALSE; } if (playsink->mute_changed) { if (chain->mute) { g_object_set (chain->mute, "mute", playsink->mute, NULL); } else { if (playsink->mute) g_object_set (chain->volume, "volume", (gdouble) 0.0, NULL); } playsink->mute_changed = FALSE; } } else { /* no volume, we need to add a volume element when we can */ GST_DEBUG_OBJECT (playsink, "the sink has no volume property"); have_volume = FALSE; chain->sink_volume = FALSE; } if (raw && !(playsink->flags & GST_PLAY_FLAG_NATIVE_AUDIO)) { GST_DEBUG_OBJECT (playsink, "creating audioconvert"); chain->conv = gst_element_factory_make ("audioconvert", "aconv"); if (chain->conv == NULL) { post_missing_element_message (playsink, "audioconvert"); GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN, (_("Missing element '%s' - check your GStreamer installation."), "audioconvert"), ("possibly a liboil version mismatch?")); } else { gst_bin_add (bin, chain->conv); if (prev) { if (!gst_element_link_pads (prev, "src", chain->conv, "sink")) goto link_failed; } else { head = chain->conv; } prev = chain->conv; } GST_DEBUG_OBJECT (playsink, "creating audioresample"); chain->resample = gst_element_factory_make ("audioresample", "aresample"); if (chain->resample == NULL) { post_missing_element_message (playsink, "audioresample"); GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN, (_("Missing element '%s' - check your GStreamer installation."), "audioresample"), ("possibly a liboil version mismatch?")); } else { gst_bin_add (bin, chain->resample); if (prev) { if (!gst_element_link_pads (prev, "src", chain->resample, "sink")) goto link_failed; } else { head = chain->resample; } prev = chain->resample; } if (!have_volume && playsink->flags & GST_PLAY_FLAG_SOFT_VOLUME) { GST_DEBUG_OBJECT (playsink, "creating volume"); chain->volume = gst_element_factory_make ("volume", "volume"); if (chain->volume == NULL) { post_missing_element_message (playsink, "volume"); GST_ELEMENT_WARNING (playsink, CORE, MISSING_PLUGIN, (_("Missing element '%s' - check your GStreamer installation."), "volume"), ("possibly a liboil version mismatch?")); } else { have_volume = TRUE; g_signal_connect (chain->volume, "notify::volume", G_CALLBACK (notify_volume_cb), playsink); /* volume also has the mute property */ chain->mute = chain->volume; g_signal_connect (chain->mute, "notify::mute", G_CALLBACK (notify_mute_cb), playsink); /* configure with the latest volume and mute */ g_object_set (G_OBJECT (chain->volume), "volume", playsink->volume, NULL); g_object_set (G_OBJECT (chain->mute), "mute", playsink->mute, NULL); gst_bin_add (bin, chain->volume); if (prev) { if (!gst_element_link_pads (prev, "src", chain->volume, "sink")) goto link_failed; } else { head = chain->volume; } prev = chain->volume; } } } if (prev) { /* we only have to link to the previous element if we have something in * front of the sink */ GST_DEBUG_OBJECT (playsink, "linking to sink"); if (!gst_element_link_pads (prev, "src", chain->sink, NULL)) goto link_failed; } /* post a warning if we have no way to configure the volume */ if (!have_volume) { GST_ELEMENT_WARNING (playsink, STREAM, NOT_IMPLEMENTED, (_("No volume control found")), ("Volume/mute is not available")); } /* and ghost the sinkpad of the headmost element */ GST_DEBUG_OBJECT (playsink, "ghosting sink pad"); pad = gst_element_get_static_pad (head, "sink"); chain->sinkpad = gst_ghost_pad_new ("sink", pad); gst_object_unref (pad); gst_element_add_pad (chain->chain.bin, chain->sinkpad); return chain; /* ERRORS */ no_sinks: { if (!elem) { post_missing_element_message (playsink, "autoaudiosink"); if (strcmp (DEFAULT_AUDIOSINK, "autoaudiosink")) { post_missing_element_message (playsink, DEFAULT_AUDIOSINK); GST_ELEMENT_ERROR (playsink, CORE, MISSING_PLUGIN, (_("Both autoaudiosink and %s elements are missing."), DEFAULT_AUDIOSINK), (NULL)); } else { GST_ELEMENT_ERROR (playsink, CORE, MISSING_PLUGIN, (_("The autoaudiosink element is missing.")), (NULL)); } } else { if (strcmp (DEFAULT_AUDIOSINK, "autoaudiosink")) { GST_ELEMENT_ERROR (playsink, CORE, STATE_CHANGE, (_("Both autoaudiosink and %s elements are not working."), DEFAULT_AUDIOSINK), (NULL)); } else { GST_ELEMENT_ERROR (playsink, CORE, MISSING_PLUGIN, (_("The autoaudiosink element is not working.")), (NULL)); } } free_chain ((GstPlayChain *) chain); return NULL; } link_failed: { GST_ELEMENT_ERROR (playsink, CORE, PAD, (NULL), ("Failed to configure the audio sink.")); free_chain ((GstPlayChain *) chain); return NULL; } } static gboolean setup_audio_chain (GstPlaySink * playsink, gboolean raw, gboolean queue) { GstElement *elem; GstPlayAudioChain *chain; GstStateChangeReturn ret; chain = playsink->audiochain; /* if the chain was active we don't do anything */ if (GST_PLAY_CHAIN (chain)->activated == TRUE) return TRUE; if (chain->chain.raw != raw) return FALSE; /* try to set the sink element to READY again */ ret = gst_element_set_state (chain->sink, GST_STATE_READY); if (ret == GST_STATE_CHANGE_FAILURE) return FALSE; /* check if the sink, or something within the sink, has the volume property. * If it does we don't need to add a volume element. */ elem = gst_play_sink_find_property_sinks (playsink, chain->sink, "volume", G_TYPE_DOUBLE); if (elem) { chain->volume = elem; if (playsink->volume_changed) { GST_DEBUG_OBJECT (playsink, "the sink has a volume property, setting %f", playsink->volume); /* use the sink to control the volume */ g_object_set (G_OBJECT (chain->volume), "volume", playsink->volume, NULL); playsink->volume_changed = FALSE; } g_signal_connect (chain->volume, "notify::volume", G_CALLBACK (notify_volume_cb), playsink); /* if the sink also has a mute property we can use this as well. We'll only * use the mute property if there is a volume property. We can simulate the * mute with the volume otherwise. */ chain->mute = gst_play_sink_find_property_sinks (playsink, chain->sink, "mute", G_TYPE_BOOLEAN); if (chain->mute) { GST_DEBUG_OBJECT (playsink, "the sink has a mute property"); g_signal_connect (chain->mute, "notify::mute", G_CALLBACK (notify_mute_cb), playsink); } } else { /* no volume, we need to add a volume element when we can */ GST_DEBUG_OBJECT (playsink, "the sink has no volume property"); if (!raw) { GST_LOG_OBJECT (playsink, "non-raw format, can't do soft volume control"); if (chain->volume) g_signal_handlers_disconnect_by_func (chain->volume, notify_volume_cb, playsink); if (chain->mute) g_signal_handlers_disconnect_by_func (chain->mute, notify_mute_cb, playsink); chain->volume = NULL; chain->mute = NULL; } else { /* both last and current chain are raw audio, there should be a volume * element already, unless the sink changed from one with a volume * property to one that hasn't got a volume property, in which case we * re-generate the chain */ if (chain->volume == NULL) { GST_DEBUG_OBJECT (playsink, "no existing volume element to re-use"); return FALSE; } GST_DEBUG_OBJECT (playsink, "reusing existing volume element"); } } return TRUE; } /* * +-------------------------------------------------------------------+ * | visbin | * | +----------+ +------------+ +----------+ +-------+ | * | | visqueue | | audioconv | | audiores | | vis | | * | +-sink src-sink + samp src-sink src-sink src-+ | * | | +----------+ +------------+ +----------+ +-------+ | | * sink-+ +-src * +-------------------------------------------------------------------+ * */ static GstPlayVisChain * gen_vis_chain (GstPlaySink * playsink) { GstPlayVisChain *chain; GstBin *bin; gboolean res; GstPad *pad; GstElement *elem; chain = g_new0 (GstPlayVisChain, 1); chain->chain.playsink = playsink; GST_DEBUG_OBJECT (playsink, "making vis chain %p", chain); chain->chain.bin = gst_bin_new ("visbin"); bin = GST_BIN_CAST (chain->chain.bin); gst_object_ref_sink (bin); /* we're queuing raw audio here, we can remove this queue when we can disable * async behaviour in the video sink. */ chain->queue = gst_element_factory_make ("queue", "visqueue"); gst_bin_add (bin, chain->queue); chain->conv = gst_element_factory_make ("audioconvert", "aconv"); if (chain->conv == NULL) goto no_audioconvert; gst_bin_add (bin, chain->conv); chain->resample = gst_element_factory_make ("audioresample", "aresample"); if (chain->resample == NULL) goto no_audioresample; gst_bin_add (bin, chain->resample); /* this pad will be used for blocking the dataflow and switching the vis * plugin */ chain->blockpad = gst_element_get_static_pad (chain->resample, "src"); if (playsink->visualisation) { GST_DEBUG_OBJECT (playsink, "trying configure vis"); chain->vis = try_element (playsink, playsink->visualisation, FALSE); } if (chain->vis == NULL) { GST_DEBUG_OBJECT (playsink, "trying goom"); elem = gst_element_factory_make ("goom", "vis"); chain->vis = try_element (playsink, elem, TRUE); } if (chain->vis == NULL) goto no_goom; gst_bin_add (bin, chain->vis); res = gst_element_link_pads (chain->queue, "src", chain->conv, "sink"); res &= gst_element_link_pads (chain->conv, "src", chain->resample, "sink"); res &= gst_element_link_pads (chain->resample, "src", chain->vis, "sink"); if (!res) goto link_failed; chain->vissinkpad = gst_element_get_static_pad (chain->vis, "sink"); chain->vissrcpad = gst_element_get_static_pad (chain->vis, "src"); pad = gst_element_get_static_pad (chain->queue, "sink"); chain->sinkpad = gst_ghost_pad_new ("sink", pad); gst_object_unref (pad); gst_element_add_pad (chain->chain.bin, chain->sinkpad); chain->srcpad = gst_ghost_pad_new ("src", chain->vissrcpad); gst_element_add_pad (chain->chain.bin, chain->srcpad); return chain; /* ERRORS */ no_audioconvert: { post_missing_element_message (playsink, "audioconvert"); GST_ELEMENT_ERROR (playsink, CORE, MISSING_PLUGIN, (_("Missing element '%s' - check your GStreamer installation."), "audioconvert"), ("possibly a liboil version mismatch?")); free_chain ((GstPlayChain *) chain); return NULL; } no_audioresample: { post_missing_element_message (playsink, "audioresample"); GST_ELEMENT_ERROR (playsink, CORE, MISSING_PLUGIN, (_("Missing element '%s' - check your GStreamer installation."), "audioresample"), (NULL)); free_chain ((GstPlayChain *) chain); return NULL; } no_goom: { post_missing_element_message (playsink, "goom"); GST_ELEMENT_ERROR (playsink, CORE, MISSING_PLUGIN, (_("Missing element '%s' - check your GStreamer installation."), "goom"), (NULL)); free_chain ((GstPlayChain *) chain); return NULL; } link_failed: { GST_ELEMENT_ERROR (playsink, CORE, PAD, (NULL), ("Failed to configure the visualisation element.")); free_chain ((GstPlayChain *) chain); return NULL; } } /* this function is called when all the request pads are requested and when we * have to construct the final pipeline. Based on the flags we construct the * final output pipelines. */ gboolean gst_play_sink_reconfigure (GstPlaySink * playsink) { GstPlayFlags flags; gboolean need_audio, need_video, need_vis, need_text; GST_DEBUG_OBJECT (playsink, "reconfiguring"); /* assume we need nothing */ need_audio = need_video = need_vis = need_text = FALSE; GST_PLAY_SINK_LOCK (playsink); GST_OBJECT_LOCK (playsink); /* get flags, there are protected with the object lock */ flags = playsink->flags; GST_OBJECT_UNLOCK (playsink); /* figure out which components we need */ if (flags & GST_PLAY_FLAG_TEXT && playsink->text_pad) { /* we have a text_pad and we need text rendering, in this case we need a * video_pad to combine the video with the text */ if (!playsink->video_pad) goto subs_but_no_video; /* we have subtitles and we are requested to show it, we also need to show * video in this case. */ need_video = TRUE; need_text = TRUE; } else if (((flags & GST_PLAY_FLAG_VIDEO) || (flags & GST_PLAY_FLAG_NATIVE_VIDEO)) && playsink->video_pad) { /* we have video and we are requested to show it */ need_video = TRUE; } if (playsink->audio_pad) { if ((flags & GST_PLAY_FLAG_AUDIO) || (flags & GST_PLAY_FLAG_NATIVE_AUDIO)) { need_audio = TRUE; } if (playsink->audio_pad_raw) { /* only can do vis with raw uncompressed audio */ if (flags & GST_PLAY_FLAG_VIS && !need_video) { /* also add video when we add visualisation */ need_video = TRUE; need_vis = TRUE; } } } GST_DEBUG_OBJECT (playsink, "audio:%d, video:%d, vis:%d, text:%d", need_audio, need_video, need_vis, need_text); /* set up video pipeline */ if (need_video) { gboolean raw, async, queue; /* we need a raw sink when we do vis or when we have a raw pad */ raw = need_vis ? TRUE : playsink->video_pad_raw; /* we try to set the sink async=FALSE when we need vis, this way we can * avoid a queue in the audio chain. */ async = !need_vis; /* If subtitles are requested there already is a queue in the video chain */ queue = (need_text == FALSE); GST_DEBUG_OBJECT (playsink, "adding video, raw %d", playsink->video_pad_raw); if (playsink->videochain) { /* try to reactivate the chain */ if (!setup_video_chain (playsink, raw, async, queue)) { add_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE); activate_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE); free_chain ((GstPlayChain *) playsink->videochain); playsink->videochain = NULL; } } if (!playsink->videochain) { playsink->videochain = gen_video_chain (playsink, raw, async, queue); } if (playsink->videochain) { GST_DEBUG_OBJECT (playsink, "adding video chain"); add_chain (GST_PLAY_CHAIN (playsink->videochain), TRUE); activate_chain (GST_PLAY_CHAIN (playsink->videochain), TRUE); /* if we are not part of vis or subtitles, set the ghostpad target */ if (!need_vis && !need_text && !playsink->text_pad && !playsink->textchain) { GST_DEBUG_OBJECT (playsink, "ghosting video sinkpad"); gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad), playsink->videochain->sinkpad); } } } else { GST_DEBUG_OBJECT (playsink, "no video needed"); if (playsink->videochain) { GST_DEBUG_OBJECT (playsink, "removing video chain"); if (playsink->vischain) { GstPad *srcpad; GST_DEBUG_OBJECT (playsink, "unlinking vis chain"); /* also had visualisation, release the tee srcpad before we then * unlink the video from it */ if (playsink->audio_tee_vissrc) { gst_element_release_request_pad (playsink->audio_tee, playsink->audio_tee_vissrc); gst_object_unref (playsink->audio_tee_vissrc); playsink->audio_tee_vissrc = NULL; } srcpad = gst_element_get_static_pad (playsink->vischain->chain.bin, "src"); gst_pad_unlink (srcpad, playsink->videochain->sinkpad); } add_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE); activate_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE); } if (playsink->video_pad) gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad), NULL); } if (need_text) { GST_DEBUG_OBJECT (playsink, "adding text"); if (!playsink->textchain) { GST_DEBUG_OBJECT (playsink, "creating text chain"); playsink->textchain = gen_text_chain (playsink); } if (playsink->textchain) { GST_DEBUG_OBJECT (playsink, "adding text chain"); g_object_set (G_OBJECT (playsink->textchain->overlay), "silent", FALSE, NULL); add_chain (GST_PLAY_CHAIN (playsink->textchain), TRUE); gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->text_pad), playsink->textchain->textsinkpad); gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad), playsink->textchain->videosinkpad); gst_pad_link (playsink->textchain->srcpad, playsink->videochain->sinkpad); activate_chain (GST_PLAY_CHAIN (playsink->textchain), TRUE); } } else { GST_DEBUG_OBJECT (playsink, "no text needed"); /* we have no subtitles/text or we are requested to not show them */ if (playsink->textchain) { if (playsink->text_pad == NULL) { /* no text pad, remove the chain entirely */ GST_DEBUG_OBJECT (playsink, "removing text chain"); add_chain (GST_PLAY_CHAIN (playsink->textchain), FALSE); activate_chain (GST_PLAY_CHAIN (playsink->textchain), FALSE); } else { /* we have a chain and a textpad, turn the subtitles off */ GST_DEBUG_OBJECT (playsink, "turning off the text"); g_object_set (G_OBJECT (playsink->textchain->overlay), "silent", TRUE, NULL); } } if (!need_video && playsink->video_pad) gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->video_pad), NULL); if (playsink->text_pad && !playsink->textchain) gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (playsink->text_pad), NULL); } if (need_audio) { gboolean raw, queue; GST_DEBUG_OBJECT (playsink, "adding audio"); /* get a raw sink if we are asked for a raw pad */ raw = playsink->audio_pad_raw; if (need_vis && playsink->videochain) { /* If we are dealing with visualisations, we need to add a queue to * decouple the audio from the video part. We only have to do this when * the video part is async=true */ queue = ((GstPlayVideoChain *) playsink->videochain)->async; GST_DEBUG_OBJECT (playsink, "need audio queue for vis: %d", queue); } else { /* no vis, we can avoid a queue */ GST_DEBUG_OBJECT (playsink, "don't need audio queue"); queue = FALSE; } if (playsink->audiochain) { /* try to reactivate the chain */ if (!setup_audio_chain (playsink, raw, queue)) { GST_DEBUG_OBJECT (playsink, "removing current audio chain"); if (playsink->audio_tee_asrc) { gst_element_release_request_pad (playsink->audio_tee, playsink->audio_tee_asrc); gst_object_unref (playsink->audio_tee_asrc); playsink->audio_tee_asrc = NULL; } add_chain (GST_PLAY_CHAIN (playsink->audiochain), FALSE); activate_chain (GST_PLAY_CHAIN (playsink->audiochain), FALSE); playsink->audiochain->volume = NULL; playsink->audiochain->mute = NULL; free_chain ((GstPlayChain *) playsink->audiochain); playsink->audiochain = NULL; playsink->volume_changed = playsink->mute_changed = FALSE; } } if (!playsink->audiochain) { GST_DEBUG_OBJECT (playsink, "creating new audio chain"); playsink->audiochain = gen_audio_chain (playsink, raw, queue); } if (playsink->audiochain) { GST_DEBUG_OBJECT (playsink, "adding audio chain"); if (playsink->audio_tee_asrc == NULL) { playsink->audio_tee_asrc = gst_element_get_request_pad (playsink->audio_tee, "src%d"); } add_chain (GST_PLAY_CHAIN (playsink->audiochain), TRUE); activate_chain (GST_PLAY_CHAIN (playsink->audiochain), TRUE); gst_pad_link (playsink->audio_tee_asrc, playsink->audiochain->sinkpad); } } else { GST_DEBUG_OBJECT (playsink, "no audio needed"); /* we have no audio or we are requested to not play audio */ if (playsink->audiochain) { GST_DEBUG_OBJECT (playsink, "removing audio chain"); /* release the audio pad */ if (playsink->audio_tee_asrc) { gst_element_release_request_pad (playsink->audio_tee, playsink->audio_tee_asrc); gst_object_unref (playsink->audio_tee_asrc); playsink->audio_tee_asrc = NULL; } if (playsink->audiochain->sink_volume) { playsink->audiochain->volume = NULL; playsink->audiochain->mute = NULL; } add_chain (GST_PLAY_CHAIN (playsink->audiochain), FALSE); activate_chain (GST_PLAY_CHAIN (playsink->audiochain), FALSE); } } if (need_vis) { GstPad *srcpad; if (!playsink->vischain) playsink->vischain = gen_vis_chain (playsink); GST_DEBUG_OBJECT (playsink, "adding visualisation"); if (playsink->vischain) { GST_DEBUG_OBJECT (playsink, "setting up vis chain"); srcpad = gst_element_get_static_pad (playsink->vischain->chain.bin, "src"); add_chain (GST_PLAY_CHAIN (playsink->vischain), TRUE); activate_chain (GST_PLAY_CHAIN (playsink->vischain), TRUE); if (playsink->audio_tee_vissrc == NULL) { playsink->audio_tee_vissrc = gst_element_get_request_pad (playsink->audio_tee, "src%d"); } gst_pad_link (playsink->audio_tee_vissrc, playsink->vischain->sinkpad); gst_pad_link (srcpad, playsink->videochain->sinkpad); gst_object_unref (srcpad); } } else { GST_DEBUG_OBJECT (playsink, "no vis needed"); if (playsink->vischain) { if (playsink->audio_tee_vissrc) { gst_element_release_request_pad (playsink->audio_tee, playsink->audio_tee_vissrc); gst_object_unref (playsink->audio_tee_vissrc); playsink->audio_tee_vissrc = NULL; } GST_DEBUG_OBJECT (playsink, "removing vis chain"); add_chain (GST_PLAY_CHAIN (playsink->vischain), FALSE); activate_chain (GST_PLAY_CHAIN (playsink->vischain), FALSE); } } do_async_done (playsink); GST_PLAY_SINK_UNLOCK (playsink); return TRUE; /* ERRORS */ subs_but_no_video: { GST_ELEMENT_ERROR (playsink, STREAM, FORMAT, (_("Can't play a text file without video.")), ("Have text pad but no video pad")); GST_PLAY_SINK_UNLOCK (playsink); return FALSE; } } /** * gst_play_sink_set_flags: * @playsink: a #GstPlaySink * @flags: #GstPlayFlags * * Configure @flags on @playsink. The flags control the behaviour of @playsink * when constructing the sink pipelins. * * Returns: TRUE if the flags could be configured. */ gboolean gst_play_sink_set_flags (GstPlaySink * playsink, GstPlayFlags flags) { g_return_val_if_fail (GST_IS_PLAY_SINK (playsink), FALSE); GST_OBJECT_LOCK (playsink); playsink->flags = flags; GST_OBJECT_UNLOCK (playsink); return TRUE; } /** * gst_play_sink_get_flags: * @playsink: a #GstPlaySink * * Get the flags of @playsink. That flags control the behaviour of the sink when * it constructs the sink pipelines. * * Returns: the currently configured #GstPlayFlags. */ GstPlayFlags gst_play_sink_get_flags (GstPlaySink * playsink) { GstPlayFlags res; g_return_val_if_fail (GST_IS_PLAY_SINK (playsink), 0); GST_OBJECT_LOCK (playsink); res = playsink->flags; GST_OBJECT_UNLOCK (playsink); return res; } void gst_play_sink_set_font_desc (GstPlaySink * playsink, const gchar * desc) { GstPlayTextChain *chain; GST_PLAY_SINK_LOCK (playsink); chain = (GstPlayTextChain *) playsink->textchain; g_free (playsink->font_desc); playsink->font_desc = g_strdup (desc); if (chain && chain->overlay) { g_object_set (chain->overlay, "font-desc", desc, NULL); } GST_PLAY_SINK_UNLOCK (playsink); } gchar * gst_play_sink_get_font_desc (GstPlaySink * playsink) { gchar *result = NULL; GstPlayTextChain *chain; GST_PLAY_SINK_LOCK (playsink); chain = (GstPlayTextChain *) playsink->textchain; if (chain && chain->overlay) { g_object_get (chain->overlay, "font-desc", &result, NULL); playsink->font_desc = g_strdup (result); } else { result = g_strdup (playsink->font_desc); } GST_PLAY_SINK_UNLOCK (playsink); return result; } /** * gst_play_sink_get_last_frame: * @playsink: a #GstPlaySink * * Get the last displayed frame from @playsink. This frame is in the native * format of the sink element, the caps on the result buffer contain the format * of the frame data. * * Returns: a #GstBuffer with the frame data or %NULL when no video frame is * available. */ GstBuffer * gst_play_sink_get_last_frame (GstPlaySink * playsink) { GstBuffer *result = NULL; GstPlayVideoChain *chain; GST_PLAY_SINK_LOCK (playsink); GST_DEBUG_OBJECT (playsink, "taking last frame"); /* get the video chain if we can */ if ((chain = (GstPlayVideoChain *) playsink->videochain)) { GST_DEBUG_OBJECT (playsink, "found video chain"); /* see if the chain is active */ if (chain->chain.activated && chain->sink) { GstElement *elem; GST_DEBUG_OBJECT (playsink, "video chain active and has a sink"); /* find and get the last-buffer property now */ if ((elem = gst_play_sink_find_property (playsink, chain->sink, "last-buffer", GST_TYPE_BUFFER))) { GST_DEBUG_OBJECT (playsink, "getting last-buffer property"); g_object_get (elem, "last-buffer", &result, NULL); gst_object_unref (elem); } } } GST_PLAY_SINK_UNLOCK (playsink); return result; } /** * gst_play_sink_request_pad * @playsink: a #GstPlaySink * @type: a #GstPlaySinkType * * Create or return a pad of @type. * * Returns: a #GstPad of @type or %NULL when the pad could not be created. */ GstPad * gst_play_sink_request_pad (GstPlaySink * playsink, GstPlaySinkType type) { GstPad *res = NULL; gboolean created = FALSE; gboolean raw = FALSE; gboolean activate = TRUE; const gchar *pad_name = NULL; GST_DEBUG_OBJECT (playsink, "request pad type %d", type); GST_PLAY_SINK_LOCK (playsink); switch (type) { case GST_PLAY_SINK_TYPE_AUDIO_RAW: pad_name = "audio_raw_sink"; raw = TRUE; case GST_PLAY_SINK_TYPE_AUDIO: if (pad_name == NULL) pad_name = "audio_sink"; if (!playsink->audio_tee) { GST_LOG_OBJECT (playsink, "creating tee"); /* create tee when needed. This element will feed the audio sink chain * and the vis chain. */ playsink->audio_tee = gst_element_factory_make ("tee", "audiotee"); playsink->audio_tee_sink = gst_element_get_static_pad (playsink->audio_tee, "sink"); gst_bin_add (GST_BIN_CAST (playsink), playsink->audio_tee); gst_element_set_state (playsink->audio_tee, GST_STATE_PAUSED); } else { gst_element_set_state (playsink->audio_tee, GST_STATE_PAUSED); } if (!playsink->audio_pad) { GST_LOG_OBJECT (playsink, "ghosting tee sinkpad"); playsink->audio_pad = gst_ghost_pad_new (pad_name, playsink->audio_tee_sink); created = TRUE; } playsink->audio_pad_raw = raw; res = playsink->audio_pad; break; case GST_PLAY_SINK_TYPE_VIDEO_RAW: pad_name = "video_raw_sink"; raw = TRUE; case GST_PLAY_SINK_TYPE_VIDEO: if (pad_name == NULL) pad_name = "video_sink"; if (!playsink->video_pad) { GST_LOG_OBJECT (playsink, "ghosting videosink"); playsink->video_pad = gst_ghost_pad_new_no_target (pad_name, GST_PAD_SINK); created = TRUE; } playsink->video_pad_raw = raw; res = playsink->video_pad; break; case GST_PLAY_SINK_TYPE_TEXT: GST_LOG_OBJECT (playsink, "ghosting text"); if (!playsink->text_pad) { playsink->text_pad = gst_ghost_pad_new_no_target ("text_sink", GST_PAD_SINK); created = TRUE; } res = playsink->text_pad; break; case GST_PLAY_SINK_TYPE_FLUSHING: { gchar *padname; /* we need a unique padname for the flushing pad. */ padname = g_strdup_printf ("flushing_%d", playsink->count); res = gst_ghost_pad_new_no_target (padname, GST_PAD_SINK); g_free (padname); playsink->count++; activate = FALSE; created = TRUE; break; } default: res = NULL; break; } GST_PLAY_SINK_UNLOCK (playsink); if (created && res) { /* we have to add the pad when it's active or we get an error when the * element is 'running' */ gst_pad_set_active (res, TRUE); gst_element_add_pad (GST_ELEMENT_CAST (playsink), res); if (!activate) gst_pad_set_active (res, activate); } return res; } static GstPad * gst_play_sink_request_new_pad (GstElement * element, GstPadTemplate * templ, const gchar * name) { GstPlaySink *psink; GstPad *pad; GstElementClass *klass; GstPlaySinkType type; const gchar *tplname; g_return_val_if_fail (templ != NULL, NULL); GST_DEBUG_OBJECT (element, "name:%s", name); psink = GST_PLAY_SINK (element); klass = GST_ELEMENT_GET_CLASS (element); tplname = GST_PAD_TEMPLATE_NAME_TEMPLATE (templ); /* Figure out the GstPlaySinkType based on the template */ if (!strcmp (tplname, "audio_sink")) type = GST_PLAY_SINK_TYPE_AUDIO; else if (!strcmp (tplname, "aduio_raw_sink")) type = GST_PLAY_SINK_TYPE_AUDIO_RAW; else if (!strcmp (tplname, "video_sink")) type = GST_PLAY_SINK_TYPE_VIDEO; else if (!strcmp (tplname, "video_raw_sink")) type = GST_PLAY_SINK_TYPE_VIDEO_RAW; else if (!strcmp (tplname, "text_sink")) type = GST_PLAY_SINK_TYPE_TEXT; else goto unknown_template; pad = gst_play_sink_request_pad (psink, type); return pad; unknown_template: GST_WARNING_OBJECT (element, "Unknown pad template"); return NULL; } void gst_play_sink_release_pad (GstPlaySink * playsink, GstPad * pad) { GstPad **res = NULL; gboolean untarget = TRUE; GST_DEBUG_OBJECT (playsink, "release pad %" GST_PTR_FORMAT, pad); GST_PLAY_SINK_LOCK (playsink); if (pad == playsink->video_pad) { res = &playsink->video_pad; } else if (pad == playsink->audio_pad) { res = &playsink->audio_pad; } else if (pad == playsink->text_pad) { res = &playsink->text_pad; } else { /* try to release the given pad anyway, these could be the FLUSHING pads. */ res = &pad; untarget = FALSE; } GST_PLAY_SINK_UNLOCK (playsink); if (*res) { GST_DEBUG_OBJECT (playsink, "deactivate pad %" GST_PTR_FORMAT, *res); gst_pad_set_active (*res, FALSE); if (untarget) { GST_DEBUG_OBJECT (playsink, "untargeting pad %" GST_PTR_FORMAT, *res); gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (*res), NULL); } GST_DEBUG_OBJECT (playsink, "remove pad %" GST_PTR_FORMAT, *res); gst_element_remove_pad (GST_ELEMENT_CAST (playsink), *res); *res = NULL; } } static void gst_play_sink_release_request_pad (GstElement * element, GstPad * pad) { GstPlaySink *psink = GST_PLAY_SINK (element); gst_play_sink_release_pad (psink, pad); } static void gst_play_sink_handle_message (GstBin * bin, GstMessage * message) { GstPlaySink *playsink; playsink = GST_PLAY_SINK_CAST (bin); switch (GST_MESSAGE_TYPE (message)) { case GST_MESSAGE_STEP_DONE: { GstFormat format; guint64 amount; gdouble rate; gboolean flush, intermediate, eos; guint64 duration; GST_INFO_OBJECT (playsink, "Handling step-done message"); gst_message_parse_step_done (message, &format, &amount, &rate, &flush, &intermediate, &duration, &eos); if (format == GST_FORMAT_BUFFERS) { /* for the buffer format, we align the other streams */ if (playsink->audiochain) { GstEvent *event; event = gst_event_new_step (GST_FORMAT_TIME, duration, rate, flush, intermediate); if (!gst_element_send_event (playsink->audiochain->chain.bin, event)) { GST_DEBUG_OBJECT (playsink, "Event failed when sent to audio sink"); } } } GST_BIN_CLASS (gst_play_sink_parent_class)->handle_message (bin, message); break; } default: GST_BIN_CLASS (gst_play_sink_parent_class)->handle_message (bin, message); break; } } /* Send an event to our sinks until one of them works; don't then send to the * remaining sinks (unlike GstBin) * Special case: If a text sink is set we need to send the event * to them in case it's source is different from the a/v stream's source. */ static gboolean gst_play_sink_send_event_to_sink (GstPlaySink * playsink, GstEvent * event) { gboolean res = TRUE; if (playsink->textchain && playsink->textchain->sink) { gst_event_ref (event); if ((res = gst_element_send_event (playsink->textchain->chain.bin, event))) { GST_DEBUG_OBJECT (playsink, "Sent event succesfully to text sink"); } else { GST_DEBUG_OBJECT (playsink, "Event failed when sent to text sink"); } } if (playsink->videochain) { gst_event_ref (event); if ((res = gst_element_send_event (playsink->videochain->chain.bin, event))) { GST_DEBUG_OBJECT (playsink, "Sent event succesfully to video sink"); goto done; } GST_DEBUG_OBJECT (playsink, "Event failed when sent to video sink"); } if (playsink->audiochain) { gst_event_ref (event); if ((res = gst_element_send_event (playsink->audiochain->chain.bin, event))) { GST_DEBUG_OBJECT (playsink, "Sent event succesfully to audio sink"); goto done; } GST_DEBUG_OBJECT (playsink, "Event failed when sent to audio sink"); } done: gst_event_unref (event); return res; } /* We only want to send the event to a single sink (overriding GstBin's * behaviour), but we want to keep GstPipeline's behaviour - wrapping seek * events appropriately. So, this is a messy duplication of code. */ static gboolean gst_play_sink_send_event (GstElement * element, GstEvent * event) { gboolean res = FALSE; GstEventType event_type = GST_EVENT_TYPE (event); GstPlaySink *playsink; playsink = GST_PLAY_SINK_CAST (element); switch (event_type) { case GST_EVENT_SEEK: GST_DEBUG_OBJECT (element, "Sending event to a sink"); res = gst_play_sink_send_event_to_sink (playsink, event); break; case GST_EVENT_STEP: { GstFormat format; guint64 amount; gdouble rate; gboolean flush, intermediate; gst_event_parse_step (event, &format, &amount, &rate, &flush, &intermediate); if (format == GST_FORMAT_BUFFERS) { /* for buffers, we will try to step video frames, for other formats we * send the step to all sinks */ res = gst_play_sink_send_event_to_sink (playsink, event); } else { res = GST_ELEMENT_CLASS (gst_play_sink_parent_class)->send_event (element, event); } break; } default: res = GST_ELEMENT_CLASS (gst_play_sink_parent_class)->send_event (element, event); break; } return res; } static GstStateChangeReturn gst_play_sink_change_state (GstElement * element, GstStateChange transition) { GstStateChangeReturn ret; GstStateChangeReturn bret; GstPlaySink *playsink; playsink = GST_PLAY_SINK (element); switch (transition) { case GST_STATE_CHANGE_READY_TO_PAUSED: playsink->need_async_start = TRUE; /* we want to go async to PAUSED until we managed to configure and add the * sinks */ do_async_start (playsink); ret = GST_STATE_CHANGE_ASYNC; break; case GST_STATE_CHANGE_PAUSED_TO_READY: case GST_STATE_CHANGE_READY_TO_NULL: if (playsink->audiochain && playsink->audiochain->sink_volume) { /* remove our links to the mute and volume elements when they were * provided by a sink */ playsink->audiochain->volume = NULL; playsink->audiochain->mute = NULL; } ret = GST_STATE_CHANGE_SUCCESS; break; default: /* all other state changes return SUCCESS by default, this value can be * overridden by the result of the children */ ret = GST_STATE_CHANGE_SUCCESS; break; } /* do the state change of the children */ bret = GST_ELEMENT_CLASS (gst_play_sink_parent_class)->change_state (element, transition); /* now look at the result of our children and adjust the return value */ switch (bret) { case GST_STATE_CHANGE_FAILURE: /* failure, we stop */ goto activate_failed; case GST_STATE_CHANGE_NO_PREROLL: /* some child returned NO_PREROLL. This is strange but we never know. We * commit our async state change (if any) and return the NO_PREROLL */ do_async_done (playsink); ret = bret; break; case GST_STATE_CHANGE_ASYNC: /* some child was async, return this */ ret = bret; break; default: /* return our previously configured return value */ break; } switch (transition) { case GST_STATE_CHANGE_READY_TO_PAUSED: break; case GST_STATE_CHANGE_PLAYING_TO_PAUSED: /* FIXME Release audio device when we implement that */ playsink->need_async_start = TRUE; break; case GST_STATE_CHANGE_PAUSED_TO_READY: case GST_STATE_CHANGE_READY_TO_NULL: /* remove sinks we added */ if (playsink->videochain) { activate_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE); add_chain (GST_PLAY_CHAIN (playsink->videochain), FALSE); } if (playsink->audiochain) { activate_chain (GST_PLAY_CHAIN (playsink->audiochain), FALSE); add_chain (GST_PLAY_CHAIN (playsink->audiochain), FALSE); } if (playsink->vischain) { activate_chain (GST_PLAY_CHAIN (playsink->vischain), FALSE); add_chain (GST_PLAY_CHAIN (playsink->vischain), FALSE); } if (playsink->textchain) { activate_chain (GST_PLAY_CHAIN (playsink->textchain), FALSE); add_chain (GST_PLAY_CHAIN (playsink->textchain), FALSE); } do_async_done (playsink); break; default: break; } return ret; /* ERRORS */ activate_failed: { GST_DEBUG_OBJECT (element, "element failed to change states -- activation problem?"); return GST_STATE_CHANGE_FAILURE; } } static void gst_play_sink_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * spec) { GstPlaySink *playsink = GST_PLAY_SINK (object); switch (prop_id) { case PROP_FLAGS: gst_play_sink_set_flags (playsink, g_value_get_flags (value)); break; case PROP_VOLUME: gst_play_sink_set_volume (playsink, g_value_get_double (value)); break; case PROP_MUTE: gst_play_sink_set_mute (playsink, g_value_get_boolean (value)); break; case PROP_FONT_DESC: gst_play_sink_set_font_desc (playsink, g_value_get_string (value)); break; case PROP_VIS_PLUGIN: gst_play_sink_set_vis_plugin (playsink, g_value_get_object (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, spec); break; } } static void gst_play_sink_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * spec) { GstPlaySink *playsink = GST_PLAY_SINK (object); switch (prop_id) { case PROP_FLAGS: g_value_set_flags (value, gst_play_sink_get_flags (playsink)); break; case PROP_VOLUME: g_value_set_double (value, gst_play_sink_get_volume (playsink)); break; case PROP_MUTE: g_value_set_boolean (value, gst_play_sink_get_mute (playsink)); break; case PROP_FONT_DESC: g_value_take_string (value, gst_play_sink_get_font_desc (playsink)); break; case PROP_VIS_PLUGIN: g_value_take_object (value, gst_play_sink_get_vis_plugin (playsink)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, spec); break; } } gboolean gst_play_sink_plugin_init (GstPlugin * plugin) { GST_DEBUG_CATEGORY_INIT (gst_play_sink_debug, "playsink", 0, "play bin"); return gst_element_register (plugin, "playsink", GST_RANK_NONE, GST_TYPE_PLAY_SINK); }