/* * GStreamer * Copyright (C) 2015 Vivia Nikolaidou * * 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-errorignore * * Passes through all packets, until it encounters GST_FLOW_ERROR or * GST_FLOW_NOT_NEGOTIATED (configurable). At that point it will unref the * buffers and return GST_FLOW_OK (configurable) - until the next * READY_TO_PAUSED, RECONFIGURE or FLUSH_STOP. * * Example launch line * |[ * gst-launch-1.0 videotestsrc ! errorignore ! autovideosink * ]| * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gsterrorignore.h" #define GST_CAT_DEFAULT gst_error_ignore_debug GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT); enum { PROP_0, PROP_IGNORE_ERROR, PROP_IGNORE_NOTLINKED, PROP_IGNORE_NOTNEGOTIATED, PROP_CONVERT_TO }; static void gst_error_ignore_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_error_ignore_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); 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); #define parent_class gst_error_ignore_parent_class G_DEFINE_TYPE (GstErrorIgnore, gst_error_ignore, GST_TYPE_ELEMENT); static GstFlowReturn gst_error_ignore_sink_chain (GstPad * pad, GstObject * parent, GstBuffer * inbuf); static gboolean gst_error_ignore_sink_event (GstPad * pad, GstObject * parent, GstEvent * event); static GstStateChangeReturn gst_error_ignore_change_state (GstElement * element, GstStateChange transition); static void gst_error_ignore_class_init (GstErrorIgnoreClass * klass) { GstElementClass *gstelement_class; GObjectClass *object_class = G_OBJECT_CLASS (klass); GST_DEBUG_CATEGORY_INIT (gst_error_ignore_debug, "errorignore", 0, "Convert some GstFlowReturn types into others"); gstelement_class = (GstElementClass *) klass; gst_element_class_set_static_metadata (gstelement_class, "Convert some GstFlowReturn types into others", "Generic", "Pass through all packets but ignore some GstFlowReturn types", "Vivia Nikolaidou "); gst_element_class_add_static_pad_template (gstelement_class, &src_template); gst_element_class_add_static_pad_template (gstelement_class, &sink_template); gstelement_class->change_state = gst_error_ignore_change_state; /* define virtual function pointers */ object_class->set_property = gst_error_ignore_set_property; object_class->get_property = gst_error_ignore_get_property; /* define properties */ g_object_class_install_property (object_class, PROP_IGNORE_ERROR, g_param_spec_boolean ("ignore-error", "Ignore GST_FLOW_ERROR", "Whether to ignore GST_FLOW_ERROR", TRUE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (object_class, PROP_IGNORE_NOTLINKED, g_param_spec_boolean ("ignore-notlinked", "Ignore GST_FLOW_NOT_LINKED", "Whether to ignore GST_FLOW_NOT_LINKED", FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (object_class, PROP_IGNORE_NOTNEGOTIATED, g_param_spec_boolean ("ignore-notnegotiated", "Ignore GST_FLOW_NOT_NEGOTIATED", "Whether to ignore GST_FLOW_NOT_NEGOTIATED", TRUE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (object_class, PROP_CONVERT_TO, g_param_spec_enum ("convert-to", "GstFlowReturn to convert to", "Which GstFlowReturn value we should convert to when ignoring", GST_TYPE_FLOW_RETURN, GST_FLOW_NOT_LINKED, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); } static void gst_error_ignore_init (GstErrorIgnore * self) { self->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink"); gst_pad_set_chain_function (self->sinkpad, GST_DEBUG_FUNCPTR (gst_error_ignore_sink_chain)); gst_pad_set_event_function (self->sinkpad, GST_DEBUG_FUNCPTR (gst_error_ignore_sink_event)); GST_PAD_SET_PROXY_ALLOCATION (self->sinkpad); GST_PAD_SET_PROXY_CAPS (self->sinkpad); GST_PAD_SET_PROXY_SCHEDULING (self->sinkpad); gst_element_add_pad (GST_ELEMENT (self), self->sinkpad); self->srcpad = gst_pad_new_from_static_template (&src_template, "src"); gst_pad_use_fixed_caps (self->srcpad); GST_PAD_SET_PROXY_ALLOCATION (self->srcpad); GST_PAD_SET_PROXY_CAPS (self->srcpad); GST_PAD_SET_PROXY_SCHEDULING (self->srcpad); gst_element_add_pad (GST_ELEMENT (self), self->srcpad); self->keep_pushing = TRUE; self->ignore_error = TRUE; self->ignore_notlinked = FALSE; self->ignore_notnegotiated = TRUE; self->convert_to = GST_FLOW_NOT_LINKED; } static void gst_error_ignore_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstErrorIgnore *self = GST_ERROR_IGNORE (object); switch (prop_id) { case PROP_IGNORE_ERROR: self->ignore_error = g_value_get_boolean (value); break; case PROP_IGNORE_NOTLINKED: self->ignore_notlinked = g_value_get_boolean (value); break; case PROP_IGNORE_NOTNEGOTIATED: self->ignore_notnegotiated = g_value_get_boolean (value); break; case PROP_CONVERT_TO: self->convert_to = g_value_get_enum (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_error_ignore_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstErrorIgnore *self = GST_ERROR_IGNORE (object); switch (prop_id) { case PROP_IGNORE_ERROR: g_value_set_boolean (value, self->ignore_error); break; case PROP_IGNORE_NOTLINKED: g_value_set_boolean (value, self->ignore_notlinked); break; case PROP_IGNORE_NOTNEGOTIATED: g_value_set_boolean (value, self->ignore_notnegotiated); break; case PROP_CONVERT_TO: g_value_set_enum (value, self->convert_to); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean gst_error_ignore_sink_event (GstPad * pad, GstObject * parent, GstEvent * event) { GstErrorIgnore *self = GST_ERROR_IGNORE (parent); gboolean ret; GST_LOG_OBJECT (pad, "Got %s event", GST_EVENT_TYPE_NAME (event)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_FLUSH_STOP: self->keep_pushing = TRUE; /* fall through */ default: ret = gst_pad_event_default (pad, parent, event); break; } return ret; } static GstFlowReturn gst_error_ignore_sink_chain (GstPad * pad, GstObject * parent, GstBuffer * inbuf) { GstErrorIgnore *self = GST_ERROR_IGNORE (parent); GstFlowReturn ret = GST_FLOW_OK; if (gst_pad_check_reconfigure (pad)) self->keep_pushing = TRUE; if (self->keep_pushing) { ret = gst_pad_push (self->srcpad, inbuf); self->keep_pushing = (ret == GST_FLOW_OK); } else { gst_buffer_unref (inbuf); } if ((ret == GST_FLOW_ERROR && self->ignore_error) || (ret == GST_FLOW_NOT_LINKED && self->ignore_notlinked) || (ret == GST_FLOW_NOT_NEGOTIATED && self->ignore_notnegotiated)) return self->convert_to; else return ret; } static GstStateChangeReturn gst_error_ignore_change_state (GstElement * element, GstStateChange transition) { GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; GstErrorIgnore *self = GST_ERROR_IGNORE (element); ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); if (ret == GST_STATE_CHANGE_FAILURE) return ret; switch (transition) { case GST_STATE_CHANGE_READY_TO_PAUSED: self->keep_pushing = TRUE; break; default: break; } return ret; }