/* * GStreamer * Copyright (C) 2008 Nokia Corporation * * 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. */ /** * SECTION:camerabinvideo * @short_description: video recording module of #GstCameraBin * * * * * The pipeline for this module is: * * * *----------------------------------------------------------------------------- * audiosrc -> audio_queue -> audioconvert -> volume -> audioenc * > videomux -> filesink * video_queue -> [timeoverlay] -> videoenc * -> [post proc] -> tee < * queue -> *----------------------------------------------------------------------------- * * * * The properties of elements are: * * queue - "leaky", 2 (Leaky on downstream (old buffers)) * * * */ /* * includes */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include "camerabingeneral.h" #include "camerabinvideo.h" /* * defines and static global vars */ /* internal element names */ #define DEFAULT_AUD_ENC "vorbisenc" #define DEFAULT_VID_ENC "theoraenc" #define DEFAULT_MUX "oggmux" #define DEFAULT_SINK "filesink" #define USE_AUDIO_CONVERSION 1 enum { PROP_0, PROP_FILENAME }; static void gst_camerabin_video_dispose (GstCameraBinVideo * sink); static void gst_camerabin_video_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_camerabin_video_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstClock *gst_camerabin_video_provide_clock (GstElement * elem); static GstStateChangeReturn gst_camerabin_video_change_state (GstElement * element, GstStateChange transition); static gboolean camerabin_video_pad_tee_src0_have_buffer (GstPad * pad, GstBuffer * buffer, gpointer u_data); static gboolean camerabin_video_pad_aud_src_have_buffer (GstPad * pad, GstBuffer * buffer, gpointer u_data); static gboolean camerabin_video_sink_have_event (GstPad * pad, GstEvent * event, gpointer u_data); static gboolean gst_camerabin_video_create_elements (GstCameraBinVideo * vid); static void gst_camerabin_video_destroy_elements (GstCameraBinVideo * vid); GST_BOILERPLATE (GstCameraBinVideo, gst_camerabin_video, GstBin, GST_TYPE_BIN); static const GstElementDetails gst_camerabin_video_details = GST_ELEMENT_DETAILS ("Video capture bin for camerabin", "Bin/Video", "Process and store video data", "Edgard Lima \n" "Nokia Corporation "); static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS_ANY); static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS_ANY); /* GObject methods implementation */ static void gst_camerabin_video_base_init (gpointer klass) { GstElementClass *eklass = GST_ELEMENT_CLASS (klass); gst_element_class_add_pad_template (eklass, gst_static_pad_template_get (&sink_template)); gst_element_class_add_pad_template (eklass, gst_static_pad_template_get (&src_template)); gst_element_class_set_details (eklass, &gst_camerabin_video_details); } static void gst_camerabin_video_class_init (GstCameraBinVideoClass * klass) { GObjectClass *gobject_class; GstElementClass *eklass = GST_ELEMENT_CLASS (klass); gobject_class = G_OBJECT_CLASS (klass); gobject_class->dispose = (GObjectFinalizeFunc) GST_DEBUG_FUNCPTR (gst_camerabin_video_dispose); eklass->change_state = GST_DEBUG_FUNCPTR (gst_camerabin_video_change_state); eklass->provide_clock = GST_DEBUG_FUNCPTR (gst_camerabin_video_provide_clock); gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_camerabin_video_set_property); gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_camerabin_video_get_property); /** * GstCameraBinVideo:filename: * * This property can be used to specify the filename of the video. * **/ g_object_class_install_property (gobject_class, PROP_FILENAME, g_param_spec_string ("filename", "Filename", "Filename of the video to save", NULL, G_PARAM_READWRITE)); } static void gst_camerabin_video_init (GstCameraBinVideo * vid, GstCameraBinVideoClass * g_class) { vid->filename = g_string_new (""); vid->user_post = NULL; vid->user_vid_enc = NULL; vid->user_aud_enc = NULL; vid->user_aud_src = NULL; vid->user_mux = NULL; vid->aud_src = NULL; vid->sink = NULL; vid->tee = NULL; vid->volume = NULL; vid->video_queue = NULL; vid->tee_video_srcpad = NULL; vid->tee_vf_srcpad = NULL; vid->pending_eos = NULL; vid->mute = ARG_DEFAULT_MUTE; vid->aud_src_probe_id = 0; vid->vid_src_probe_id = 0; vid->vid_tee_probe_id = 0; vid->vid_sink_probe_id = 0; /* Create src and sink ghost pads */ vid->sinkpad = gst_ghost_pad_new_no_target ("sink", GST_PAD_SINK); gst_element_add_pad (GST_ELEMENT (vid), vid->sinkpad); vid->srcpad = gst_ghost_pad_new_no_target ("src", GST_PAD_SRC); gst_element_add_pad (GST_ELEMENT (vid), vid->srcpad); /* Add probe for handling eos when stopping recording */ vid->vid_sink_probe_id = gst_pad_add_event_probe (vid->sinkpad, G_CALLBACK (camerabin_video_sink_have_event), vid); } static void gst_camerabin_video_dispose (GstCameraBinVideo * vid) { GST_DEBUG_OBJECT (vid, "disposing"); g_string_free (vid->filename, TRUE); vid->filename = NULL; if (vid->vid_sink_probe_id) { gst_pad_remove_event_probe (vid->sinkpad, vid->vid_sink_probe_id); vid->vid_sink_probe_id = 0; } if (vid->user_post) { gst_object_unref (vid->user_post); vid->user_post = NULL; } if (vid->user_vid_enc) { gst_object_unref (vid->user_vid_enc); vid->user_vid_enc = NULL; } if (vid->user_aud_enc) { gst_object_unref (vid->user_aud_enc); vid->user_aud_enc = NULL; } if (vid->user_aud_src) { gst_object_unref (vid->user_aud_src); vid->user_aud_src = NULL; } if (vid->user_mux) { gst_object_unref (vid->user_mux); vid->user_mux = NULL; } G_OBJECT_CLASS (parent_class)->dispose ((GObject *) vid); } static void gst_camerabin_video_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstCameraBinVideo *bin = GST_CAMERABIN_VIDEO (object); switch (prop_id) { case PROP_FILENAME: g_string_assign (bin->filename, g_value_get_string (value)); GST_INFO_OBJECT (bin, "received filename: '%s'", bin->filename->str); if (bin->sink) { g_object_set (G_OBJECT (bin->sink), "location", bin->filename->str, NULL); } else { GST_INFO_OBJECT (bin, "no sink, not setting name yet"); } break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_camerabin_video_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstCameraBinVideo *bin = GST_CAMERABIN_VIDEO (object); switch (prop_id) { case PROP_FILENAME: g_value_set_string (value, bin->filename->str); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /* GstElement methods implementation */ static GstClock * gst_camerabin_video_provide_clock (GstElement * elem) { GstElement *aud_src = GST_CAMERABIN_VIDEO (elem)->aud_src; if (aud_src) { return gst_element_provide_clock (aud_src); } else { return NULL; } } static GstStateChangeReturn gst_camerabin_video_change_state (GstElement * element, GstStateChange transition) { GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; GstCameraBinVideo *vid = GST_CAMERABIN_VIDEO (element); GST_DEBUG_OBJECT (element, "changing state: %s -> %s", gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)), gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition))); switch (transition) { case GST_STATE_CHANGE_NULL_TO_READY: if (!gst_camerabin_video_create_elements (vid)) { return GST_STATE_CHANGE_FAILURE; } /* Don't change sink to READY yet to allow changing the filename in READY state. */ gst_element_set_locked_state (vid->sink, TRUE); break; case GST_STATE_CHANGE_READY_TO_PAUSED: vid->calculate_adjust_ts_video = TRUE; vid->calculate_adjust_ts_aud = TRUE; g_object_set (G_OBJECT (vid->sink), "async", FALSE, NULL); gst_element_set_locked_state (vid->sink, FALSE); break; case GST_STATE_CHANGE_PAUSED_TO_PLAYING: vid->calculate_adjust_ts_video = TRUE; vid->calculate_adjust_ts_aud = TRUE; break; case GST_STATE_CHANGE_PAUSED_TO_READY: /* Set sink to NULL in order to write the file _now_ */ GST_INFO ("write video file: %s", vid->filename->str); gst_element_set_locked_state (vid->sink, TRUE); gst_element_set_state (vid->sink, GST_STATE_NULL); break; default: break; } ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); switch (transition) { case GST_STATE_CHANGE_PAUSED_TO_PLAYING: /* Write debug graph to file */ GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (GST_ELEMENT_PARENT (vid)), GST_DEBUG_GRAPH_SHOW_MEDIA_TYPE | GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS, "videobin.playing"); if (vid->pending_eos) { /* Video bin is still paused, so push eos directly to video queue */ GST_DEBUG_OBJECT (vid, "pushing pending eos"); gst_pad_push_event (vid->tee_video_srcpad, vid->pending_eos); vid->pending_eos = NULL; } break; case GST_STATE_CHANGE_PAUSED_TO_READY: /* Reset counters related to timestamp rewriting */ vid->adjust_ts_video = 0; vid->last_ts_video = 0; vid->adjust_ts_aud = 0; vid->last_ts_aud = 0; if (vid->pending_eos) { gst_event_unref (vid->pending_eos); vid->pending_eos = NULL; } break; case GST_STATE_CHANGE_READY_TO_NULL: gst_camerabin_video_destroy_elements (vid); break; default: break; } GST_DEBUG_OBJECT (element, "changed state: %s -> %s = %s", gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)), gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)), gst_element_state_change_return_get_name (ret)); return ret; } /* * static helper functions implementation */ /* * camerabin_video_pad_tee_src0_have_buffer: * @pad: tee src pad leading to video encoding * @event: received buffer * @u_data: video bin object * * Buffer probe for rewriting video buffer timestamps. * * Returns: TRUE always */ static gboolean camerabin_video_pad_tee_src0_have_buffer (GstPad * pad, GstBuffer * buffer, gpointer u_data) { GstCameraBinVideo *vid = (GstCameraBinVideo *) u_data; GST_LOG ("buffer in with size %d ts %" GST_TIME_FORMAT, GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer))); if (G_UNLIKELY (vid->calculate_adjust_ts_video)) { GstEvent *event; GstObject *tee; GstPad *sinkpad; vid->adjust_ts_video = GST_BUFFER_TIMESTAMP (buffer) - vid->last_ts_video; vid->calculate_adjust_ts_video = FALSE; event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0, GST_CLOCK_TIME_NONE, vid->last_ts_video); /* Send the newsegment to both view finder and video bin */ tee = gst_pad_get_parent (pad); sinkpad = gst_element_get_static_pad (GST_ELEMENT (tee), "sink"); gst_pad_send_event (sinkpad, event); gst_object_unref (tee); gst_object_unref (sinkpad); GST_LOG_OBJECT (vid, "vid ts adjustment: %" GST_TIME_FORMAT, GST_TIME_ARGS (vid->adjust_ts_video)); GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT); } GST_BUFFER_TIMESTAMP (buffer) -= vid->adjust_ts_video; vid->last_ts_video = GST_BUFFER_TIMESTAMP (buffer); if (GST_BUFFER_DURATION_IS_VALID (buffer)) vid->last_ts_video += GST_BUFFER_DURATION (buffer); GST_LOG ("buffer out with size %d ts %" GST_TIME_FORMAT, GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer))); return TRUE; } /* * camerabin_video_pad_aud_src_have_buffer: * @pad: audio source src pad * @event: received buffer * @u_data: video bin object * * Buffer probe for rewriting audio buffer timestamps. * * Returns: TRUE always */ static gboolean camerabin_video_pad_aud_src_have_buffer (GstPad * pad, GstBuffer * buffer, gpointer u_data) { GstCameraBinVideo *vid = (GstCameraBinVideo *) u_data; GST_LOG ("buffer in with size %d duration %" G_GINT64_FORMAT " ts %" GST_TIME_FORMAT, GST_BUFFER_SIZE (buffer), GST_BUFFER_DURATION (buffer), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer))); if (vid->calculate_adjust_ts_aud) { GstEvent *event; GstPad *peerpad = NULL; vid->adjust_ts_aud = GST_BUFFER_TIMESTAMP (buffer) - vid->last_ts_aud; vid->calculate_adjust_ts_aud = FALSE; event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0, GST_CLOCK_TIME_NONE, vid->last_ts_aud); peerpad = gst_pad_get_peer (pad); if (peerpad) { gst_pad_send_event (peerpad, event); gst_object_unref (peerpad); } GST_LOG_OBJECT (vid, "aud ts adjustment: %" GST_TIME_FORMAT, GST_TIME_ARGS (vid->adjust_ts_aud)); GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT); } GST_BUFFER_TIMESTAMP (buffer) -= vid->adjust_ts_aud; vid->last_ts_aud = GST_BUFFER_TIMESTAMP (buffer); if (GST_BUFFER_DURATION_IS_VALID (buffer)) vid->last_ts_aud += GST_BUFFER_DURATION (buffer); GST_LOG ("buffer out with size %d ts %" GST_TIME_FORMAT, GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer))); return TRUE; } /* * camerabin_video_sink_have_event: * @pad: video bin sink pad * @event: received event * @u_data: video bin object * * Event probe for video bin eos handling. * Copies the eos event to audio branch of video bin. * * Returns: FALSE to drop the event, TRUE otherwise */ static gboolean camerabin_video_sink_have_event (GstPad * pad, GstEvent * event, gpointer u_data) { GstCameraBinVideo *vid = (GstCameraBinVideo *) u_data; gboolean ret = TRUE; GST_DEBUG_OBJECT (vid, "got videobin sink event: %s", GST_EVENT_TYPE_NAME (event)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_EOS: if (vid->aud_src) { GST_DEBUG_OBJECT (vid, "copying %s to audio branch", GST_EVENT_TYPE_NAME (event)); gst_element_send_event (vid->aud_src, gst_event_copy (event)); } /* If we're paused, we can't pass eos to video now to avoid blocking. Instead send eos when changing to playing next time. */ if (GST_STATE (GST_ELEMENT (vid)) == GST_STATE_PAUSED) { GST_DEBUG_OBJECT (vid, "paused, delay eos sending"); vid->pending_eos = gst_event_ref (event); ret = FALSE; /* Drop the event */ } break; default: break; } return ret; } /* * gst_camerabin_video_create_elements: * @vid: a pointer to #GstCameraBinVideo * * This function creates the needed #GstElements and resources to record videos. * Use gst_camerabin_video_destroy_elements() to free these resources. * * Returns: %TRUE if succeeded or FALSE if failed */ static gboolean gst_camerabin_video_create_elements (GstCameraBinVideo * vid) { GstPad *pad = NULL, *vid_sinkpad = NULL, *vid_srcpad = NULL; GstBin *vidbin = GST_BIN (vid); GstElement *queue = NULL; vid->adjust_ts_video = 0; vid->last_ts_video = 0; vid->calculate_adjust_ts_video = FALSE; vid->adjust_ts_aud = 0; vid->last_ts_aud = 0; vid->calculate_adjust_ts_aud = FALSE; /* Add video post processing element if any */ if (vid->user_post) { if (!gst_camerabin_add_element (vidbin, vid->user_post)) { goto error; } vid_sinkpad = gst_element_get_static_pad (vid->user_post, "sink"); } /* Add tee element */ if (!(vid->tee = gst_camerabin_create_and_add_element (vidbin, "tee"))) { goto error; } /* Set up sink ghost pad for video bin */ if (!vid_sinkpad) { vid_sinkpad = gst_element_get_static_pad (vid->tee, "sink"); } gst_ghost_pad_set_target (GST_GHOST_PAD (vid->sinkpad), vid_sinkpad); gst_object_unref (vid_sinkpad); /* Add queue element for video */ vid->tee_video_srcpad = gst_element_get_request_pad (vid->tee, "src%d"); if (!(vid->video_queue = gst_camerabin_create_and_add_element (vidbin, "queue"))) { goto error; } /* Add probe for rewriting video timestamps */ vid->vid_tee_probe_id = gst_pad_add_buffer_probe (vid->tee_video_srcpad, G_CALLBACK (camerabin_video_pad_tee_src0_have_buffer), vid); #ifdef USE_TIMEOVERLAY /* Add timeoverlay element to visualize elapsed time for debugging */ if (!(gst_camerabin_create_and_add_element (vidbin, "timeoverlay"))) { goto error; } #endif /* Add user set or default video encoder element */ if (vid->user_vid_enc) { vid->vid_enc = vid->user_vid_enc; if (!gst_camerabin_add_element (vidbin, vid->vid_enc)) { goto error; } } else if (!(vid->vid_enc = gst_camerabin_create_and_add_element (vidbin, DEFAULT_VID_ENC))) { goto error; } /* Add user set or default muxer element */ if (vid->user_mux) { vid->muxer = vid->user_mux; if (!gst_camerabin_add_element (vidbin, vid->muxer)) { goto error; } } else if (!(vid->muxer = gst_camerabin_create_and_add_element (vidbin, DEFAULT_MUX))) { goto error; } /* Add sink element for storing the video */ if (!(vid->sink = gst_camerabin_create_and_add_element (vidbin, DEFAULT_SINK))) { goto error; } g_object_set (G_OBJECT (vid->sink), "location", vid->filename->str, "buffer-mode", 2, /* non buffered io */ NULL); /* Add user set or default audio source element */ if (!(vid->aud_src = gst_camerabin_setup_default_element (vidbin, vid->user_aud_src, "autoaudiosrc", DEFAULT_AUDIOSRC))) { vid->aud_src = NULL; goto error; } else { if (!gst_camerabin_add_element (vidbin, vid->aud_src)) goto error; } /* Add queue element for audio */ if (!(gst_camerabin_create_and_add_element (vidbin, "queue"))) { goto error; } /* Add optional audio conversion and volume elements and raise no errors if adding them fails */ #ifdef USE_AUDIO_CONVERSION if (!gst_camerabin_try_add_element (vidbin, gst_element_factory_make ("audioconvert", NULL))) { GST_WARNING_OBJECT (vid, "unable to add audio conversion element"); /* gst_camerabin_try_add_element() destroyed the element */ } #endif vid->volume = gst_element_factory_make ("volume", NULL); if (!gst_camerabin_try_add_element (vidbin, vid->volume)) { GST_WARNING_OBJECT (vid, "unable to add volume element"); /* gst_camerabin_try_add_element() destroyed the element */ vid->volume = NULL; } else { g_object_set (vid->volume, "mute", vid->mute, NULL); } /* Add user set or default audio encoder element */ if (vid->user_aud_enc) { vid->aud_enc = vid->user_aud_enc; if (!gst_camerabin_add_element (vidbin, vid->aud_enc)) { goto error; } } else if (!(vid->aud_enc = gst_camerabin_create_and_add_element (vidbin, DEFAULT_AUD_ENC))) { goto error; } /* Link audio part to the muxer */ if (!gst_element_link (vid->aud_enc, vid->muxer)) { GST_ELEMENT_ERROR (vid, CORE, NEGOTIATION, (NULL), ("linking audio encoder and muxer failed")); goto error; } /* Add queue leading out of the video bin and to view finder */ vid->tee_vf_srcpad = gst_element_get_request_pad (vid->tee, "src%d"); if (!(queue = gst_camerabin_create_and_add_element (vidbin, "queue"))) { goto error; } /* Set queue leaky, we don't want to block video encoder feed, but prefer leaking view finder buffers instead. */ g_object_set (G_OBJECT (queue), "leaky", 2, "max-size-buffers", 1, NULL); /* Set up src ghost pad for video bin */ vid_srcpad = gst_element_get_static_pad (queue, "src"); gst_ghost_pad_set_target (GST_GHOST_PAD (vid->srcpad), vid_srcpad); /* Never let video bin eos events reach view finder */ vid->vid_src_probe_id = gst_pad_add_event_probe (vid_srcpad, G_CALLBACK (gst_camerabin_drop_eos_probe), vid); gst_object_unref (vid_srcpad); pad = gst_element_get_static_pad (vid->aud_src, "src"); vid->aud_src_probe_id = gst_pad_add_buffer_probe (pad, G_CALLBACK (camerabin_video_pad_aud_src_have_buffer), vid); gst_object_unref (pad); GST_DEBUG ("created video elements"); return TRUE; error: gst_camerabin_video_destroy_elements (vid); return FALSE; } /* * gst_camerabin_video_destroy_elements: * @vid: a pointer to #GstCameraBinVideo * * This function destroys all the elements created by * gst_camerabin_video_create_elements(). * */ static void gst_camerabin_video_destroy_elements (GstCameraBinVideo * vid) { GST_DEBUG ("destroying video elements"); /* Remove buffer probe from audio src pad */ if (vid->aud_src_probe_id) { GstPad *pad = gst_element_get_static_pad (vid->aud_src, "src"); if (pad) { gst_pad_remove_buffer_probe (pad, vid->aud_src_probe_id); gst_object_unref (pad); } vid->aud_src_probe_id = 0; } /* Remove EOS event probe from videobin srcpad (queue's srcpad) */ if (vid->vid_src_probe_id) { GstPad *pad = gst_ghost_pad_get_target (GST_GHOST_PAD (vid->srcpad)); if (pad) { gst_pad_remove_event_probe (pad, vid->vid_src_probe_id); gst_object_unref (pad); } vid->vid_src_probe_id = 0; } /* Remove buffer probe from video tee srcpad */ if (vid->vid_tee_probe_id) { gst_pad_remove_buffer_probe (vid->tee_video_srcpad, vid->vid_tee_probe_id); vid->vid_tee_probe_id = 0; } /* Release tee request pads */ if (vid->tee_video_srcpad) { gst_element_release_request_pad (vid->tee, vid->tee_video_srcpad); gst_object_unref (vid->tee_video_srcpad); vid->tee_video_srcpad = NULL; } if (vid->tee_vf_srcpad) { gst_element_release_request_pad (vid->tee, vid->tee_vf_srcpad); gst_object_unref (vid->tee_vf_srcpad); vid->tee_vf_srcpad = NULL; } gst_ghost_pad_set_target (GST_GHOST_PAD (vid->sinkpad), NULL); gst_ghost_pad_set_target (GST_GHOST_PAD (vid->srcpad), NULL); gst_camerabin_remove_elements_from_bin (GST_BIN (vid)); vid->aud_src = NULL; vid->sink = NULL; vid->tee = NULL; vid->volume = NULL; vid->video_queue = NULL; vid->vid_enc = NULL; vid->aud_enc = NULL; vid->muxer = NULL; if (vid->pending_eos) { gst_event_unref (vid->pending_eos); vid->pending_eos = NULL; } } /* * Set & get mute and video capture elements */ void gst_camerabin_video_set_mute (GstCameraBinVideo * vid, gboolean mute) { g_return_if_fail (vid != NULL); GST_DEBUG_OBJECT (vid, "setting mute %s", mute ? "on" : "off"); vid->mute = mute; if (vid->volume) { g_object_set (vid->volume, "mute", mute, NULL); } } void gst_camerabin_video_set_post (GstCameraBinVideo * vid, GstElement * post) { GstElement **user_post; GST_DEBUG_OBJECT (vid, "setting video post processing: %" GST_PTR_FORMAT, post); GST_OBJECT_LOCK (vid); user_post = &vid->user_post; gst_object_replace ((GstObject **) user_post, GST_OBJECT (post)); GST_OBJECT_UNLOCK (vid); } void gst_camerabin_video_set_video_enc (GstCameraBinVideo * vid, GstElement * video_enc) { GstElement **user_vid_enc; GST_DEBUG_OBJECT (vid, "setting video encoder: %" GST_PTR_FORMAT, video_enc); GST_OBJECT_LOCK (vid); user_vid_enc = &vid->user_vid_enc; gst_object_replace ((GstObject **) user_vid_enc, GST_OBJECT (video_enc)); GST_OBJECT_UNLOCK (vid); } void gst_camerabin_video_set_audio_enc (GstCameraBinVideo * vid, GstElement * audio_enc) { GstElement **user_aud_enc; GST_DEBUG_OBJECT (vid, "setting audio encoder: %" GST_PTR_FORMAT, audio_enc); GST_OBJECT_LOCK (vid); user_aud_enc = &vid->user_aud_enc; gst_object_replace ((GstObject **) user_aud_enc, GST_OBJECT (audio_enc)); GST_OBJECT_UNLOCK (vid); } void gst_camerabin_video_set_muxer (GstCameraBinVideo * vid, GstElement * muxer) { GstElement **user_mux; GST_DEBUG_OBJECT (vid, "setting muxer: %" GST_PTR_FORMAT, muxer); GST_OBJECT_LOCK (vid); user_mux = &vid->user_mux; gst_object_replace ((GstObject **) user_mux, GST_OBJECT (muxer)); GST_OBJECT_UNLOCK (vid); } void gst_camerabin_video_set_audio_src (GstCameraBinVideo * vid, GstElement * audio_src) { GstElement **user_aud_src; GST_DEBUG_OBJECT (vid, "setting audio source: %" GST_PTR_FORMAT, audio_src); GST_OBJECT_LOCK (vid); user_aud_src = &vid->user_aud_src; gst_object_replace ((GstObject **) user_aud_src, GST_OBJECT (audio_src)); GST_OBJECT_UNLOCK (vid); } gboolean gst_camerabin_video_get_mute (GstCameraBinVideo * vid) { g_return_val_if_fail (vid != NULL, FALSE); if (vid->volume) { g_object_get (vid->volume, "mute", &vid->mute, NULL); } return vid->mute; } GstElement * gst_camerabin_video_get_post (GstCameraBinVideo * vid) { return vid->user_post; } GstElement * gst_camerabin_video_get_video_enc (GstCameraBinVideo * vid) { return vid->vid_enc ? vid->vid_enc : vid->user_vid_enc; } GstElement * gst_camerabin_video_get_audio_enc (GstCameraBinVideo * vid) { return vid->aud_enc ? vid->aud_enc : vid->user_aud_enc; } GstElement * gst_camerabin_video_get_muxer (GstCameraBinVideo * vid) { return vid->muxer ? vid->muxer : vid->user_mux; } GstElement * gst_camerabin_video_get_audio_src (GstCameraBinVideo * vid) { return vid->aud_src ? vid->aud_src : vid->user_aud_src; }