| /* GStreamer |
| * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> |
| * 2000,2001,2002,2003,2004,2005 Wim Taymans <wim@fluendo.com> |
| * 2007 Wim Taymans <wim.taymans@gmail.com> |
| * |
| * gsttee.c: Tee element, one in N out |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| /** |
| * SECTION:element-tee |
| * @see_also: #GstIdentity |
| * |
| * Split data to multiple pads. Branching the data flow is useful when e.g. |
| * capturing a video where the video is shown on the screen and also encoded and |
| * written to a file. Another example is playing music and hooking up a |
| * visualisation module. |
| * |
| * One needs to use separate queue elements (or a multiqueue) in each branch to |
| * provide separate threads for each branch. Otherwise a blocked dataflow in one |
| * branch would stall the other branches. |
| * |
| * <refsect2> |
| * <title>Example launch line</title> |
| * |[ |
| * gst-launch-1.0 filesrc location=song.ogg ! decodebin ! tee name=t ! queue ! audioconvert ! audioresample ! autoaudiosink t. ! queue ! audioconvert ! goom ! videoconvert ! autovideosink |
| * ]| Play song.ogg audio file which must be in the current working directory |
| * and render visualisations using the goom element (this can be easier done |
| * using the playbin element, this is just an example pipeline). |
| * </refsect2> |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include "config.h" |
| #endif |
| |
| #include "gsttee.h" |
| #include "gst/glib-compat-private.h" |
| |
| #include <string.h> |
| #include <stdio.h> |
| |
| static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink", |
| GST_PAD_SINK, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS_ANY); |
| |
| GST_DEBUG_CATEGORY_STATIC (gst_tee_debug); |
| #define GST_CAT_DEFAULT gst_tee_debug |
| |
| #define GST_TYPE_TEE_PULL_MODE (gst_tee_pull_mode_get_type()) |
| static GType |
| gst_tee_pull_mode_get_type (void) |
| { |
| static GType type = 0; |
| static const GEnumValue data[] = { |
| {GST_TEE_PULL_MODE_NEVER, "Never activate in pull mode", "never"}, |
| {GST_TEE_PULL_MODE_SINGLE, "Only one src pad can be active in pull mode", |
| "single"}, |
| {0, NULL, NULL}, |
| }; |
| |
| if (!type) { |
| type = g_enum_register_static ("GstTeePullMode", data); |
| } |
| return type; |
| } |
| |
| #define DEFAULT_PROP_NUM_SRC_PADS 0 |
| #define DEFAULT_PROP_HAS_CHAIN TRUE |
| #define DEFAULT_PROP_SILENT TRUE |
| #define DEFAULT_PROP_LAST_MESSAGE NULL |
| #define DEFAULT_PULL_MODE GST_TEE_PULL_MODE_NEVER |
| #define DEFAULT_PROP_ALLOW_NOT_LINKED FALSE |
| |
| enum |
| { |
| PROP_0, |
| PROP_NUM_SRC_PADS, |
| PROP_HAS_CHAIN, |
| PROP_SILENT, |
| PROP_LAST_MESSAGE, |
| PROP_PULL_MODE, |
| PROP_ALLOC_PAD, |
| PROP_ALLOW_NOT_LINKED, |
| }; |
| |
| static GstStaticPadTemplate tee_src_template = |
| GST_STATIC_PAD_TEMPLATE ("src_%u", |
| GST_PAD_SRC, |
| GST_PAD_REQUEST, |
| GST_STATIC_CAPS_ANY); |
| |
| #define _do_init \ |
| GST_DEBUG_CATEGORY_INIT (gst_tee_debug, "tee", 0, "tee element"); |
| #define gst_tee_parent_class parent_class |
| G_DEFINE_TYPE_WITH_CODE (GstTee, gst_tee, GST_TYPE_ELEMENT, _do_init); |
| |
| static GParamSpec *pspec_last_message = NULL; |
| static GParamSpec *pspec_alloc_pad = NULL; |
| |
| GType gst_tee_pad_get_type (void); |
| |
| #define GST_TYPE_TEE_PAD \ |
| (gst_tee_pad_get_type()) |
| #define GST_TEE_PAD(obj) \ |
| (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TEE_PAD, GstTeePad)) |
| #define GST_TEE_PAD_CLASS(klass) \ |
| (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_TEE_PAD, GstTeePadClass)) |
| #define GST_IS_TEE_PAD(obj) \ |
| (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_TEE_PAD)) |
| #define GST_IS_TEE_PAD_CLASS(klass) \ |
| (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_TEE_PAD)) |
| #define GST_TEE_PAD_CAST(obj) \ |
| ((GstTeePad *)(obj)) |
| |
| typedef struct _GstTeePad GstTeePad; |
| typedef struct _GstTeePadClass GstTeePadClass; |
| |
| struct _GstTeePad |
| { |
| GstPad parent; |
| |
| guint index; |
| gboolean pushed; |
| GstFlowReturn result; |
| gboolean removed; |
| }; |
| |
| struct _GstTeePadClass |
| { |
| GstPadClass parent; |
| }; |
| |
| G_DEFINE_TYPE (GstTeePad, gst_tee_pad, GST_TYPE_PAD); |
| |
| static void |
| gst_tee_pad_class_init (GstTeePadClass * klass) |
| { |
| } |
| |
| static void |
| gst_tee_pad_reset (GstTeePad * pad) |
| { |
| pad->pushed = FALSE; |
| pad->result = GST_FLOW_NOT_LINKED; |
| pad->removed = FALSE; |
| } |
| |
| static void |
| gst_tee_pad_init (GstTeePad * pad) |
| { |
| gst_tee_pad_reset (pad); |
| } |
| |
| static GstPad *gst_tee_request_new_pad (GstElement * element, |
| GstPadTemplate * temp, const gchar * unused, const GstCaps * caps); |
| static void gst_tee_release_pad (GstElement * element, GstPad * pad); |
| |
| static void gst_tee_finalize (GObject * object); |
| static void gst_tee_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec); |
| static void gst_tee_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec); |
| static void gst_tee_dispose (GObject * object); |
| |
| static GstFlowReturn gst_tee_chain (GstPad * pad, GstObject * parent, |
| GstBuffer * buffer); |
| static GstFlowReturn gst_tee_chain_list (GstPad * pad, GstObject * parent, |
| GstBufferList * list); |
| static gboolean gst_tee_sink_event (GstPad * pad, GstObject * parent, |
| GstEvent * event); |
| static gboolean gst_tee_sink_query (GstPad * pad, GstObject * parent, |
| GstQuery * query); |
| static gboolean gst_tee_sink_activate_mode (GstPad * pad, GstObject * parent, |
| GstPadMode mode, gboolean active); |
| static gboolean gst_tee_src_query (GstPad * pad, GstObject * parent, |
| GstQuery * query); |
| static gboolean gst_tee_src_activate_mode (GstPad * pad, GstObject * parent, |
| GstPadMode mode, gboolean active); |
| static GstFlowReturn gst_tee_src_get_range (GstPad * pad, GstObject * parent, |
| guint64 offset, guint length, GstBuffer ** buf); |
| |
| static void |
| gst_tee_dispose (GObject * object) |
| { |
| GList *item; |
| |
| restart: |
| for (item = GST_ELEMENT_PADS (object); item; item = g_list_next (item)) { |
| GstPad *pad = GST_PAD (item->data); |
| if (GST_PAD_IS_SRC (pad)) { |
| gst_element_release_request_pad (GST_ELEMENT (object), pad); |
| goto restart; |
| } |
| } |
| |
| G_OBJECT_CLASS (parent_class)->dispose (object); |
| } |
| |
| static void |
| gst_tee_finalize (GObject * object) |
| { |
| GstTee *tee; |
| |
| tee = GST_TEE (object); |
| |
| g_hash_table_unref (tee->pad_indexes); |
| |
| g_free (tee->last_message); |
| |
| G_OBJECT_CLASS (parent_class)->finalize (object); |
| } |
| |
| static void |
| gst_tee_class_init (GstTeeClass * klass) |
| { |
| GObjectClass *gobject_class; |
| GstElementClass *gstelement_class; |
| |
| gobject_class = G_OBJECT_CLASS (klass); |
| gstelement_class = GST_ELEMENT_CLASS (klass); |
| |
| gobject_class->finalize = gst_tee_finalize; |
| gobject_class->set_property = gst_tee_set_property; |
| gobject_class->get_property = gst_tee_get_property; |
| gobject_class->dispose = gst_tee_dispose; |
| |
| g_object_class_install_property (gobject_class, PROP_NUM_SRC_PADS, |
| g_param_spec_int ("num-src-pads", "Num Src Pads", |
| "The number of source pads", 0, G_MAXINT, DEFAULT_PROP_NUM_SRC_PADS, |
| G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_HAS_CHAIN, |
| g_param_spec_boolean ("has-chain", "Has Chain", |
| "If the element can operate in push mode", DEFAULT_PROP_HAS_CHAIN, |
| G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_SILENT, |
| g_param_spec_boolean ("silent", "Silent", |
| "Don't produce last_message events", DEFAULT_PROP_SILENT, |
| G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| pspec_last_message = g_param_spec_string ("last-message", "Last Message", |
| "The message describing current status", DEFAULT_PROP_LAST_MESSAGE, |
| G_PARAM_READABLE | G_PARAM_STATIC_STRINGS); |
| g_object_class_install_property (gobject_class, PROP_LAST_MESSAGE, |
| pspec_last_message); |
| g_object_class_install_property (gobject_class, PROP_PULL_MODE, |
| g_param_spec_enum ("pull-mode", "Pull mode", |
| "Behavior of tee in pull mode", GST_TYPE_TEE_PULL_MODE, |
| DEFAULT_PULL_MODE, |
| G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| pspec_alloc_pad = g_param_spec_object ("alloc-pad", "Allocation Src Pad", |
| "The pad ALLOCATION queries will be proxied to (unused)", GST_TYPE_PAD, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS); |
| g_object_class_install_property (gobject_class, PROP_ALLOC_PAD, |
| pspec_alloc_pad); |
| |
| /** |
| * GstTee:allow-not-linked |
| * |
| * This property makes sink pad return GST_FLOW_OK even if there are no |
| * source pads or any of them is linked. |
| * |
| * This is useful to avoid errors when you have a dynamic pipeline and during |
| * a reconnection you can have all the pads unlinked or removed. |
| * |
| * Since: 1.6 |
| */ |
| g_object_class_install_property (gobject_class, PROP_ALLOW_NOT_LINKED, |
| g_param_spec_boolean ("allow-not-linked", "Allow not linked", |
| "Return GST_FLOW_OK even if there are no source pads or they are " |
| "all unlinked", DEFAULT_PROP_ALLOW_NOT_LINKED, |
| G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| gst_element_class_set_static_metadata (gstelement_class, |
| "Tee pipe fitting", |
| "Generic", |
| "1-to-N pipe fitting", |
| "Erik Walthinsen <omega@cse.ogi.edu>, " "Wim Taymans <wim@fluendo.com>"); |
| gst_element_class_add_pad_template (gstelement_class, |
| gst_static_pad_template_get (&sinktemplate)); |
| gst_element_class_add_pad_template (gstelement_class, |
| gst_static_pad_template_get (&tee_src_template)); |
| |
| gstelement_class->request_new_pad = |
| GST_DEBUG_FUNCPTR (gst_tee_request_new_pad); |
| gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_tee_release_pad); |
| } |
| |
| static void |
| gst_tee_init (GstTee * tee) |
| { |
| tee->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink"); |
| tee->sink_mode = GST_PAD_MODE_NONE; |
| |
| gst_pad_set_event_function (tee->sinkpad, |
| GST_DEBUG_FUNCPTR (gst_tee_sink_event)); |
| gst_pad_set_query_function (tee->sinkpad, |
| GST_DEBUG_FUNCPTR (gst_tee_sink_query)); |
| gst_pad_set_activatemode_function (tee->sinkpad, |
| GST_DEBUG_FUNCPTR (gst_tee_sink_activate_mode)); |
| gst_pad_set_chain_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_tee_chain)); |
| gst_pad_set_chain_list_function (tee->sinkpad, |
| GST_DEBUG_FUNCPTR (gst_tee_chain_list)); |
| GST_OBJECT_FLAG_SET (tee->sinkpad, GST_PAD_FLAG_PROXY_CAPS); |
| gst_element_add_pad (GST_ELEMENT (tee), tee->sinkpad); |
| |
| tee->pad_indexes = g_hash_table_new (NULL, NULL); |
| |
| tee->last_message = NULL; |
| } |
| |
| static void |
| gst_tee_notify_alloc_pad (GstTee * tee) |
| { |
| g_object_notify_by_pspec ((GObject *) tee, pspec_alloc_pad); |
| } |
| |
| static gboolean |
| forward_sticky_events (GstPad * pad, GstEvent ** event, gpointer user_data) |
| { |
| GstPad *srcpad = GST_PAD_CAST (user_data); |
| GstFlowReturn ret; |
| |
| ret = gst_pad_store_sticky_event (srcpad, *event); |
| if (ret != GST_FLOW_OK) { |
| GST_DEBUG_OBJECT (srcpad, "storing sticky event %p (%s) failed: %s", *event, |
| GST_EVENT_TYPE_NAME (*event), gst_flow_get_name (ret)); |
| } |
| |
| return TRUE; |
| } |
| |
| static GstPad * |
| gst_tee_request_new_pad (GstElement * element, GstPadTemplate * templ, |
| const gchar * name_templ, const GstCaps * caps) |
| { |
| gchar *name; |
| GstPad *srcpad; |
| GstTee *tee; |
| GstPadMode mode; |
| gboolean res; |
| guint index = 0; |
| |
| tee = GST_TEE (element); |
| |
| GST_DEBUG_OBJECT (tee, "requesting pad"); |
| |
| GST_OBJECT_LOCK (tee); |
| |
| if (name_templ) { |
| sscanf (name_templ, "src_%u", &index); |
| GST_LOG_OBJECT (element, "name: %s (index %d)", name_templ, index); |
| if (g_hash_table_contains (tee->pad_indexes, GUINT_TO_POINTER (index))) { |
| GST_ERROR_OBJECT (element, "pad name %s is not unique", name_templ); |
| GST_OBJECT_UNLOCK (tee); |
| return NULL; |
| } |
| if (index >= tee->next_pad_index) |
| tee->next_pad_index = index + 1; |
| } else { |
| index = tee->next_pad_index; |
| |
| while (g_hash_table_contains (tee->pad_indexes, GUINT_TO_POINTER (index))) |
| index++; |
| |
| tee->next_pad_index = index + 1; |
| } |
| |
| g_hash_table_insert (tee->pad_indexes, GUINT_TO_POINTER (index), NULL); |
| |
| name = g_strdup_printf ("src_%u", index); |
| |
| srcpad = GST_PAD_CAST (g_object_new (GST_TYPE_TEE_PAD, |
| "name", name, "direction", templ->direction, "template", templ, |
| NULL)); |
| GST_TEE_PAD_CAST (srcpad)->index = index; |
| g_free (name); |
| |
| mode = tee->sink_mode; |
| |
| GST_OBJECT_UNLOCK (tee); |
| |
| switch (mode) { |
| case GST_PAD_MODE_PULL: |
| /* we already have a src pad in pull mode, and our pull mode can only be |
| SINGLE, so fall through to activate this new pad in push mode */ |
| case GST_PAD_MODE_PUSH: |
| res = gst_pad_activate_mode (srcpad, GST_PAD_MODE_PUSH, TRUE); |
| break; |
| default: |
| res = TRUE; |
| break; |
| } |
| |
| if (!res) |
| goto activate_failed; |
| |
| gst_pad_set_activatemode_function (srcpad, |
| GST_DEBUG_FUNCPTR (gst_tee_src_activate_mode)); |
| gst_pad_set_query_function (srcpad, GST_DEBUG_FUNCPTR (gst_tee_src_query)); |
| gst_pad_set_getrange_function (srcpad, |
| GST_DEBUG_FUNCPTR (gst_tee_src_get_range)); |
| /* Forward sticky events to the new srcpad */ |
| gst_pad_sticky_events_foreach (tee->sinkpad, forward_sticky_events, srcpad); |
| GST_OBJECT_FLAG_SET (srcpad, GST_PAD_FLAG_PROXY_CAPS); |
| gst_element_add_pad (GST_ELEMENT_CAST (tee), srcpad); |
| |
| return srcpad; |
| |
| /* ERRORS */ |
| activate_failed: |
| { |
| gboolean changed = FALSE; |
| |
| GST_OBJECT_LOCK (tee); |
| GST_DEBUG_OBJECT (tee, "warning failed to activate request pad"); |
| if (tee->allocpad == srcpad) { |
| tee->allocpad = NULL; |
| changed = TRUE; |
| } |
| GST_OBJECT_UNLOCK (tee); |
| gst_object_unref (srcpad); |
| if (changed) { |
| gst_tee_notify_alloc_pad (tee); |
| } |
| return NULL; |
| } |
| } |
| |
| static void |
| gst_tee_release_pad (GstElement * element, GstPad * pad) |
| { |
| GstTee *tee; |
| gboolean changed = FALSE; |
| guint index; |
| |
| tee = GST_TEE (element); |
| |
| GST_DEBUG_OBJECT (tee, "releasing pad"); |
| |
| GST_OBJECT_LOCK (tee); |
| index = GST_TEE_PAD_CAST (pad)->index; |
| /* mark the pad as removed so that future pad_alloc fails with NOT_LINKED. */ |
| GST_TEE_PAD_CAST (pad)->removed = TRUE; |
| if (tee->allocpad == pad) { |
| tee->allocpad = NULL; |
| changed = TRUE; |
| } |
| GST_OBJECT_UNLOCK (tee); |
| |
| gst_object_ref (pad); |
| gst_element_remove_pad (GST_ELEMENT_CAST (tee), pad); |
| |
| gst_pad_set_active (pad, FALSE); |
| |
| gst_object_unref (pad); |
| |
| if (changed) { |
| gst_tee_notify_alloc_pad (tee); |
| } |
| |
| GST_OBJECT_LOCK (tee); |
| g_hash_table_remove (tee->pad_indexes, GUINT_TO_POINTER (index)); |
| GST_OBJECT_UNLOCK (tee); |
| } |
| |
| static void |
| gst_tee_set_property (GObject * object, guint prop_id, const GValue * value, |
| GParamSpec * pspec) |
| { |
| GstTee *tee = GST_TEE (object); |
| |
| GST_OBJECT_LOCK (tee); |
| switch (prop_id) { |
| case PROP_HAS_CHAIN: |
| tee->has_chain = g_value_get_boolean (value); |
| break; |
| case PROP_SILENT: |
| tee->silent = g_value_get_boolean (value); |
| break; |
| case PROP_PULL_MODE: |
| tee->pull_mode = (GstTeePullMode) g_value_get_enum (value); |
| break; |
| case PROP_ALLOC_PAD: |
| { |
| GstPad *pad = g_value_get_object (value); |
| GST_OBJECT_LOCK (pad); |
| if (GST_OBJECT_PARENT (pad) == GST_OBJECT_CAST (object)) |
| tee->allocpad = pad; |
| else |
| GST_WARNING_OBJECT (object, "Tried to set alloc pad %s which" |
| " is not my pad", GST_OBJECT_NAME (pad)); |
| GST_OBJECT_UNLOCK (pad); |
| break; |
| } |
| case PROP_ALLOW_NOT_LINKED: |
| tee->allow_not_linked = g_value_get_boolean (value); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| GST_OBJECT_UNLOCK (tee); |
| } |
| |
| static void |
| gst_tee_get_property (GObject * object, guint prop_id, GValue * value, |
| GParamSpec * pspec) |
| { |
| GstTee *tee = GST_TEE (object); |
| |
| GST_OBJECT_LOCK (tee); |
| switch (prop_id) { |
| case PROP_NUM_SRC_PADS: |
| g_value_set_int (value, GST_ELEMENT (tee)->numsrcpads); |
| break; |
| case PROP_HAS_CHAIN: |
| g_value_set_boolean (value, tee->has_chain); |
| break; |
| case PROP_SILENT: |
| g_value_set_boolean (value, tee->silent); |
| break; |
| case PROP_LAST_MESSAGE: |
| g_value_set_string (value, tee->last_message); |
| break; |
| case PROP_PULL_MODE: |
| g_value_set_enum (value, tee->pull_mode); |
| break; |
| case PROP_ALLOC_PAD: |
| g_value_set_object (value, tee->allocpad); |
| break; |
| case PROP_ALLOW_NOT_LINKED: |
| g_value_set_boolean (value, tee->allow_not_linked); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| GST_OBJECT_UNLOCK (tee); |
| } |
| |
| static gboolean |
| gst_tee_sink_event (GstPad * pad, GstObject * parent, GstEvent * event) |
| { |
| gboolean res; |
| |
| switch (GST_EVENT_TYPE (event)) { |
| default: |
| res = gst_pad_event_default (pad, parent, event); |
| break; |
| } |
| |
| return res; |
| } |
| |
| static gboolean |
| gst_tee_sink_query (GstPad * pad, GstObject * parent, GstQuery * query) |
| { |
| gboolean res; |
| |
| switch (GST_QUERY_TYPE (query)) { |
| default: |
| res = gst_pad_query_default (pad, parent, query); |
| break; |
| } |
| return res; |
| } |
| |
| static void |
| gst_tee_do_message (GstTee * tee, GstPad * pad, gpointer data, gboolean is_list) |
| { |
| GST_OBJECT_LOCK (tee); |
| g_free (tee->last_message); |
| if (is_list) { |
| tee->last_message = |
| g_strdup_printf ("chain-list ******* (%s:%s)t %p", |
| GST_DEBUG_PAD_NAME (pad), data); |
| } else { |
| tee->last_message = |
| g_strdup_printf ("chain ******* (%s:%s)t (%" G_GSIZE_FORMAT |
| " bytes, %" G_GUINT64_FORMAT ") %p", GST_DEBUG_PAD_NAME (pad), |
| gst_buffer_get_size (data), GST_BUFFER_TIMESTAMP (data), data); |
| } |
| GST_OBJECT_UNLOCK (tee); |
| |
| g_object_notify_by_pspec ((GObject *) tee, pspec_last_message); |
| } |
| |
| static GstFlowReturn |
| gst_tee_do_push (GstTee * tee, GstPad * pad, gpointer data, gboolean is_list) |
| { |
| GstFlowReturn res; |
| |
| /* Push */ |
| if (pad == tee->pull_pad) { |
| /* don't push on the pad we're pulling from */ |
| res = GST_FLOW_OK; |
| } else if (is_list) { |
| res = |
| gst_pad_push_list (pad, |
| gst_buffer_list_ref (GST_BUFFER_LIST_CAST (data))); |
| } else { |
| res = gst_pad_push (pad, gst_buffer_ref (GST_BUFFER_CAST (data))); |
| } |
| return res; |
| } |
| |
| static void |
| clear_pads (GstPad * pad, GstTee * tee) |
| { |
| GST_TEE_PAD_CAST (pad)->pushed = FALSE; |
| GST_TEE_PAD_CAST (pad)->result = GST_FLOW_NOT_LINKED; |
| } |
| |
| static GstFlowReturn |
| gst_tee_handle_data (GstTee * tee, gpointer data, gboolean is_list) |
| { |
| GList *pads; |
| guint32 cookie; |
| GstFlowReturn ret, cret; |
| |
| if (G_UNLIKELY (!tee->silent)) |
| gst_tee_do_message (tee, tee->sinkpad, data, is_list); |
| |
| GST_OBJECT_LOCK (tee); |
| pads = GST_ELEMENT_CAST (tee)->srcpads; |
| |
| /* special case for zero pads */ |
| if (G_UNLIKELY (!pads)) |
| goto no_pads; |
| |
| /* special case for just one pad that avoids reffing the buffer */ |
| if (!pads->next) { |
| GstPad *pad = GST_PAD_CAST (pads->data); |
| |
| /* Keep another ref around, a pad probe |
| * might release and destroy the pad */ |
| gst_object_ref (pad); |
| GST_OBJECT_UNLOCK (tee); |
| |
| if (pad == tee->pull_pad) { |
| ret = GST_FLOW_OK; |
| } else if (is_list) { |
| ret = gst_pad_push_list (pad, GST_BUFFER_LIST_CAST (data)); |
| } else { |
| ret = gst_pad_push (pad, GST_BUFFER_CAST (data)); |
| } |
| |
| gst_object_unref (pad); |
| |
| if (ret == GST_FLOW_NOT_LINKED && tee->allow_not_linked) { |
| ret = GST_FLOW_OK; |
| } |
| |
| return ret; |
| } |
| |
| /* mark all pads as 'not pushed on yet' */ |
| g_list_foreach (pads, (GFunc) clear_pads, tee); |
| |
| restart: |
| if (tee->allow_not_linked) { |
| cret = GST_FLOW_OK; |
| } else { |
| cret = GST_FLOW_NOT_LINKED; |
| } |
| pads = GST_ELEMENT_CAST (tee)->srcpads; |
| cookie = GST_ELEMENT_CAST (tee)->pads_cookie; |
| |
| while (pads) { |
| GstPad *pad; |
| |
| pad = GST_PAD_CAST (pads->data); |
| |
| if (G_LIKELY (!GST_TEE_PAD_CAST (pad)->pushed)) { |
| /* not yet pushed, release lock and start pushing */ |
| gst_object_ref (pad); |
| GST_OBJECT_UNLOCK (tee); |
| |
| GST_LOG_OBJECT (pad, "Starting to push %s %p", |
| is_list ? "list" : "buffer", data); |
| |
| ret = gst_tee_do_push (tee, pad, data, is_list); |
| |
| GST_LOG_OBJECT (pad, "Pushing item %p yielded result %s", data, |
| gst_flow_get_name (ret)); |
| |
| GST_OBJECT_LOCK (tee); |
| /* keep track of which pad we pushed and the result value */ |
| GST_TEE_PAD_CAST (pad)->pushed = TRUE; |
| GST_TEE_PAD_CAST (pad)->result = ret; |
| gst_object_unref (pad); |
| pad = NULL; |
| } else { |
| /* already pushed, use previous return value */ |
| ret = GST_TEE_PAD_CAST (pad)->result; |
| GST_LOG_OBJECT (pad, "pad already pushed with %s", |
| gst_flow_get_name (ret)); |
| } |
| |
| /* before we go combining the return value, check if the pad list is still |
| * the same. It could be possible that the pad we just pushed was removed |
| * and the return value it not valid anymore */ |
| if (G_UNLIKELY (GST_ELEMENT_CAST (tee)->pads_cookie != cookie)) { |
| GST_LOG_OBJECT (tee, "pad list changed"); |
| /* the list of pads changed, restart iteration. Pads that we already |
| * pushed on and are still in the new list, will not be pushed on |
| * again. */ |
| goto restart; |
| } |
| |
| /* stop pushing more buffers when we have a fatal error */ |
| if (G_UNLIKELY (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED)) |
| goto error; |
| |
| /* keep all other return values, overwriting the previous one. */ |
| if (G_LIKELY (ret != GST_FLOW_NOT_LINKED)) { |
| GST_LOG_OBJECT (tee, "Replacing ret val %d with %d", cret, ret); |
| cret = ret; |
| } |
| pads = g_list_next (pads); |
| } |
| GST_OBJECT_UNLOCK (tee); |
| |
| gst_mini_object_unref (GST_MINI_OBJECT_CAST (data)); |
| |
| /* no need to unset gvalue */ |
| return cret; |
| |
| /* ERRORS */ |
| no_pads: |
| { |
| if (tee->allow_not_linked) { |
| GST_DEBUG_OBJECT (tee, "there are no pads, dropping %s", |
| is_list ? "buffer-list" : "buffer"); |
| ret = GST_FLOW_OK; |
| } else { |
| GST_DEBUG_OBJECT (tee, "there are no pads, return not-linked"); |
| ret = GST_FLOW_NOT_LINKED; |
| } |
| goto end; |
| } |
| error: |
| { |
| GST_DEBUG_OBJECT (tee, "received error %s", gst_flow_get_name (ret)); |
| goto end; |
| } |
| end: |
| { |
| GST_OBJECT_UNLOCK (tee); |
| gst_mini_object_unref (GST_MINI_OBJECT_CAST (data)); |
| return ret; |
| } |
| } |
| |
| static GstFlowReturn |
| gst_tee_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer) |
| { |
| GstFlowReturn res; |
| GstTee *tee; |
| |
| tee = GST_TEE_CAST (parent); |
| |
| GST_DEBUG_OBJECT (tee, "received buffer %p", buffer); |
| |
| res = gst_tee_handle_data (tee, buffer, FALSE); |
| |
| GST_DEBUG_OBJECT (tee, "handled buffer %s", gst_flow_get_name (res)); |
| |
| return res; |
| } |
| |
| static GstFlowReturn |
| gst_tee_chain_list (GstPad * pad, GstObject * parent, GstBufferList * list) |
| { |
| GstFlowReturn res; |
| GstTee *tee; |
| |
| tee = GST_TEE_CAST (parent); |
| |
| GST_DEBUG_OBJECT (tee, "received list %p", list); |
| |
| res = gst_tee_handle_data (tee, list, TRUE); |
| |
| GST_DEBUG_OBJECT (tee, "handled list %s", gst_flow_get_name (res)); |
| |
| return res; |
| } |
| |
| static gboolean |
| gst_tee_sink_activate_mode (GstPad * pad, GstObject * parent, GstPadMode mode, |
| gboolean active) |
| { |
| gboolean res; |
| GstTee *tee; |
| |
| tee = GST_TEE (parent); |
| |
| switch (mode) { |
| case GST_PAD_MODE_PUSH: |
| { |
| GST_OBJECT_LOCK (tee); |
| tee->sink_mode = active ? mode : GST_PAD_MODE_NONE; |
| |
| if (active && !tee->has_chain) |
| goto no_chain; |
| GST_OBJECT_UNLOCK (tee); |
| res = TRUE; |
| break; |
| } |
| default: |
| res = FALSE; |
| break; |
| } |
| return res; |
| |
| /* ERRORS */ |
| no_chain: |
| { |
| GST_OBJECT_UNLOCK (tee); |
| GST_INFO_OBJECT (tee, |
| "Tee cannot operate in push mode with has-chain==FALSE"); |
| return FALSE; |
| } |
| } |
| |
| static gboolean |
| gst_tee_src_activate_mode (GstPad * pad, GstObject * parent, GstPadMode mode, |
| gboolean active) |
| { |
| GstTee *tee; |
| gboolean res; |
| GstPad *sinkpad; |
| |
| tee = GST_TEE (parent); |
| |
| switch (mode) { |
| case GST_PAD_MODE_PULL: |
| { |
| GST_OBJECT_LOCK (tee); |
| |
| if (tee->pull_mode == GST_TEE_PULL_MODE_NEVER) |
| goto cannot_pull; |
| |
| if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE && active && tee->pull_pad) |
| goto cannot_pull_multiple_srcs; |
| |
| sinkpad = gst_object_ref (tee->sinkpad); |
| |
| GST_OBJECT_UNLOCK (tee); |
| |
| res = gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, active); |
| gst_object_unref (sinkpad); |
| |
| if (!res) |
| goto sink_activate_failed; |
| |
| GST_OBJECT_LOCK (tee); |
| if (active) { |
| if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE) |
| tee->pull_pad = pad; |
| } else { |
| if (pad == tee->pull_pad) |
| tee->pull_pad = NULL; |
| } |
| tee->sink_mode = (active ? GST_PAD_MODE_PULL : GST_PAD_MODE_NONE); |
| GST_OBJECT_UNLOCK (tee); |
| break; |
| } |
| default: |
| res = TRUE; |
| break; |
| } |
| |
| return res; |
| |
| /* ERRORS */ |
| cannot_pull: |
| { |
| GST_OBJECT_UNLOCK (tee); |
| GST_INFO_OBJECT (tee, "Cannot activate in pull mode, pull-mode " |
| "set to NEVER"); |
| return FALSE; |
| } |
| cannot_pull_multiple_srcs: |
| { |
| GST_OBJECT_UNLOCK (tee); |
| GST_INFO_OBJECT (tee, "Cannot activate multiple src pads in pull mode, " |
| "pull-mode set to SINGLE"); |
| return FALSE; |
| } |
| sink_activate_failed: |
| { |
| GST_INFO_OBJECT (tee, "Failed to %sactivate sink pad in pull mode", |
| active ? "" : "de"); |
| return FALSE; |
| } |
| } |
| |
| static gboolean |
| gst_tee_src_query (GstPad * pad, GstObject * parent, GstQuery * query) |
| { |
| GstTee *tee; |
| gboolean res; |
| GstPad *sinkpad; |
| |
| tee = GST_TEE (parent); |
| |
| switch (GST_QUERY_TYPE (query)) { |
| case GST_QUERY_SCHEDULING: |
| { |
| gboolean pull_mode; |
| |
| GST_OBJECT_LOCK (tee); |
| pull_mode = TRUE; |
| if (tee->pull_mode == GST_TEE_PULL_MODE_NEVER) { |
| GST_INFO_OBJECT (tee, "Cannot activate in pull mode, pull-mode " |
| "set to NEVER"); |
| pull_mode = FALSE; |
| } else if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE && tee->pull_pad) { |
| GST_INFO_OBJECT (tee, "Cannot activate multiple src pads in pull mode, " |
| "pull-mode set to SINGLE"); |
| pull_mode = FALSE; |
| } |
| |
| sinkpad = gst_object_ref (tee->sinkpad); |
| GST_OBJECT_UNLOCK (tee); |
| |
| if (pull_mode) { |
| /* ask peer if we can operate in pull mode */ |
| res = gst_pad_peer_query (sinkpad, query); |
| } else { |
| res = TRUE; |
| } |
| gst_object_unref (sinkpad); |
| break; |
| } |
| default: |
| res = gst_pad_query_default (pad, parent, query); |
| break; |
| } |
| |
| return res; |
| } |
| |
| static void |
| gst_tee_push_eos (const GValue * vpad, GstTee * tee) |
| { |
| GstPad *pad = g_value_get_object (vpad); |
| |
| if (pad != tee->pull_pad) |
| gst_pad_push_event (pad, gst_event_new_eos ()); |
| } |
| |
| static void |
| gst_tee_pull_eos (GstTee * tee) |
| { |
| GstIterator *iter; |
| |
| iter = gst_element_iterate_src_pads (GST_ELEMENT (tee)); |
| gst_iterator_foreach (iter, (GstIteratorForeachFunction) gst_tee_push_eos, |
| tee); |
| gst_iterator_free (iter); |
| } |
| |
| static GstFlowReturn |
| gst_tee_src_get_range (GstPad * pad, GstObject * parent, guint64 offset, |
| guint length, GstBuffer ** buf) |
| { |
| GstTee *tee; |
| GstFlowReturn ret; |
| |
| tee = GST_TEE (parent); |
| |
| ret = gst_pad_pull_range (tee->sinkpad, offset, length, buf); |
| |
| if (ret == GST_FLOW_OK) |
| ret = gst_tee_handle_data (tee, gst_buffer_ref (*buf), FALSE); |
| else if (ret == GST_FLOW_EOS) |
| gst_tee_pull_eos (tee); |
| |
| return ret; |
| } |