/* GStreamer * Copyright (C) 1999,2000 Erik Walthinsen * 2000 Wim Taymans * 2005 Wim Taymans * * gstidentity.c: * * 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 "../../gst/gst-i18n-lib.h" #include "gstidentity.h" #include static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS_ANY); static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS_ANY); GST_DEBUG_CATEGORY_STATIC (gst_identity_debug); #define GST_CAT_DEFAULT gst_identity_debug static const GstElementDetails gst_identity_details = GST_ELEMENT_DETAILS ("Identity", "Generic", "Pass data without modification", "Erik Walthinsen "); /* Identity signals and args */ enum { SIGNAL_HANDOFF, /* FILL ME */ LAST_SIGNAL }; #define DEFAULT_SLEEP_TIME 0 #define DEFAULT_DUPLICATE 1 #define DEFAULT_ERROR_AFTER -1 #define DEFAULT_DROP_PROBABILITY 0.0 #define DEFAULT_DATARATE 0 #define DEFAULT_SILENT FALSE #define DEFAULT_SINGLE_SEGMENT FALSE #define DEFAULT_DUMP FALSE #define DEFAULT_SYNC FALSE #define DEFAULT_CHECK_PERFECT FALSE #define DEFAULT_CHECK_IMPERFECT_TIMESTAMP FALSE #define DEFAULT_CHECK_IMPERFECT_OFFSET FALSE enum { PROP_0, PROP_SLEEP_TIME, PROP_ERROR_AFTER, PROP_DROP_PROBABILITY, PROP_DATARATE, PROP_SILENT, PROP_SINGLE_SEGMENT, PROP_LAST_MESSAGE, PROP_DUMP, PROP_SYNC, PROP_CHECK_PERFECT, PROP_CHECK_IMPERFECT_TIMESTAMP, PROP_CHECK_IMPERFECT_OFFSET }; #define _do_init(bla) \ GST_DEBUG_CATEGORY_INIT (gst_identity_debug, "identity", 0, "identity element"); GST_BOILERPLATE_FULL (GstIdentity, gst_identity, GstBaseTransform, GST_TYPE_BASE_TRANSFORM, _do_init); static void gst_identity_finalize (GObject * object); static void gst_identity_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_identity_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static gboolean gst_identity_event (GstBaseTransform * trans, GstEvent * event); static GstFlowReturn gst_identity_transform_ip (GstBaseTransform * trans, GstBuffer * buf); static gboolean gst_identity_start (GstBaseTransform * trans); static gboolean gst_identity_stop (GstBaseTransform * trans); static guint gst_identity_signals[LAST_SIGNAL] = { 0 }; static void gst_identity_base_init (gpointer g_class) { GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class); gst_element_class_add_pad_template (gstelement_class, gst_static_pad_template_get (&srctemplate)); gst_element_class_add_pad_template (gstelement_class, gst_static_pad_template_get (&sinktemplate)); gst_element_class_set_details (gstelement_class, &gst_identity_details); } static void gst_identity_finalize (GObject * object) { GstIdentity *identity; identity = GST_IDENTITY (object); g_free (identity->last_message); G_OBJECT_CLASS (parent_class)->finalize (object); } /* fixme: do something about this */ static void marshal_VOID__MINIOBJECT (GClosure * closure, GValue * return_value, guint n_param_values, const GValue * param_values, gpointer invocation_hint, gpointer marshal_data) { typedef void (*marshalfunc_VOID__MINIOBJECT) (gpointer obj, gpointer arg1, gpointer data2); register marshalfunc_VOID__MINIOBJECT callback; register GCClosure *cc = (GCClosure *) closure; register gpointer data1, data2; g_return_if_fail (n_param_values == 2); if (G_CCLOSURE_SWAP_DATA (closure)) { data1 = closure->data; data2 = g_value_peek_pointer (param_values + 0); } else { data1 = g_value_peek_pointer (param_values + 0); data2 = closure->data; } callback = (marshalfunc_VOID__MINIOBJECT) (marshal_data ? marshal_data : cc-> callback); callback (data1, gst_value_get_mini_object (param_values + 1), data2); } static void gst_identity_class_init (GstIdentityClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; GstBaseTransformClass *gstbasetrans_class; gobject_class = G_OBJECT_CLASS (klass); gstelement_class = GST_ELEMENT_CLASS (klass); gstbasetrans_class = GST_BASE_TRANSFORM_CLASS (klass); gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_identity_set_property); gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_identity_get_property); g_object_class_install_property (gobject_class, PROP_SLEEP_TIME, g_param_spec_uint ("sleep-time", "Sleep time", "Microseconds to sleep between processing", 0, G_MAXUINT, DEFAULT_SLEEP_TIME, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_ERROR_AFTER, g_param_spec_int ("error_after", "Error After", "Error after N buffers", G_MININT, G_MAXINT, DEFAULT_ERROR_AFTER, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_DROP_PROBABILITY, g_param_spec_float ("drop_probability", "Drop Probability", "The Probability a buffer is dropped", 0.0, 1.0, DEFAULT_DROP_PROBABILITY, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_DATARATE, g_param_spec_int ("datarate", "Datarate", "(Re)timestamps buffers with number of bytes per second (0 = inactive)", 0, G_MAXINT, DEFAULT_DATARATE, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_SILENT, g_param_spec_boolean ("silent", "silent", "silent", DEFAULT_SILENT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_SINGLE_SEGMENT, g_param_spec_boolean ("single-segment", "Single Segment", "Timestamp buffers and eat newsegments so as to appear as one segment", DEFAULT_SINGLE_SEGMENT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_LAST_MESSAGE, g_param_spec_string ("last-message", "last-message", "last-message", NULL, G_PARAM_READABLE)); g_object_class_install_property (gobject_class, PROP_DUMP, g_param_spec_boolean ("dump", "Dump", "Dump buffer contents to stdout", DEFAULT_DUMP, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_SYNC, g_param_spec_boolean ("sync", "Synchronize", "Synchronize to pipeline clock", DEFAULT_SYNC, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_CHECK_PERFECT, g_param_spec_boolean ("check-perfect", "Check For Perfect Stream", "Verify that the stream is time- and data-contiguous. " "This only logs in the debug log. This will be deprecated in favor " "of the check-imperfect-timestamp/offset properties.", DEFAULT_CHECK_PERFECT, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_CHECK_IMPERFECT_TIMESTAMP, g_param_spec_boolean ("check-imperfect-timestamp", "Check for discontiguous timestamps", "Send element messages if timestamps and durations do not match up", DEFAULT_CHECK_IMPERFECT_TIMESTAMP, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_CHECK_IMPERFECT_OFFSET, g_param_spec_boolean ("check-imperfect-offset", "Check for discontiguous offset", "Send element messages if offset and offset_end do not match up", DEFAULT_CHECK_IMPERFECT_OFFSET, G_PARAM_READWRITE)); /** * GstIdentity::handoff: * @identity: the identity instance * @buffer: the buffer that just has been received * @pad: the pad that received it * * This signal gets emitted before passing the buffer downstream. */ gst_identity_signals[SIGNAL_HANDOFF] = g_signal_new ("handoff", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstIdentityClass, handoff), NULL, NULL, marshal_VOID__MINIOBJECT, G_TYPE_NONE, 1, GST_TYPE_BUFFER); gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_identity_finalize); gstbasetrans_class->event = GST_DEBUG_FUNCPTR (gst_identity_event); gstbasetrans_class->transform_ip = GST_DEBUG_FUNCPTR (gst_identity_transform_ip); gstbasetrans_class->start = GST_DEBUG_FUNCPTR (gst_identity_start); gstbasetrans_class->stop = GST_DEBUG_FUNCPTR (gst_identity_stop); } static void gst_identity_init (GstIdentity * identity, GstIdentityClass * g_class) { gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (identity), TRUE); identity->sleep_time = DEFAULT_SLEEP_TIME; identity->error_after = DEFAULT_ERROR_AFTER; identity->drop_probability = DEFAULT_DROP_PROBABILITY; identity->datarate = DEFAULT_DATARATE; identity->silent = DEFAULT_SILENT; identity->single_segment = DEFAULT_SINGLE_SEGMENT; identity->sync = DEFAULT_SYNC; identity->check_perfect = DEFAULT_CHECK_PERFECT; identity->check_imperfect_timestamp = DEFAULT_CHECK_IMPERFECT_TIMESTAMP; identity->check_imperfect_offset = DEFAULT_CHECK_IMPERFECT_OFFSET; identity->dump = DEFAULT_DUMP; identity->last_message = NULL; } static gboolean gst_identity_event (GstBaseTransform * trans, GstEvent * event) { GstIdentity *identity; gboolean ret = TRUE; identity = GST_IDENTITY (trans); if (!identity->silent) { const GstStructure *s; gchar *sstr; GST_OBJECT_LOCK (identity); g_free (identity->last_message); if ((s = gst_event_get_structure (event))) sstr = gst_structure_to_string (s); else sstr = g_strdup (""); identity->last_message = g_strdup_printf ("event ******* (%s:%s) E (type: %d, %s) %p", GST_DEBUG_PAD_NAME (trans->sinkpad), GST_EVENT_TYPE (event), sstr, event); g_free (sstr); GST_OBJECT_UNLOCK (identity); g_object_notify (G_OBJECT (identity), "last_message"); } if (identity->single_segment && (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT)) { if (trans->have_newsegment == FALSE) { GstEvent *news; GstFormat format; gst_event_parse_new_segment (event, NULL, NULL, &format, NULL, NULL, NULL); /* This is the first newsegment, send out a (0, -1) newsegment */ news = gst_event_new_new_segment (TRUE, 1.0, format, 0, -1, 0); if (!(gst_pad_event_default (trans->sinkpad, news))) return FALSE; } } GST_BASE_TRANSFORM_CLASS (parent_class)->event (trans, event); if (identity->single_segment && (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT)) { /* eat up segments */ ret = FALSE; } return ret; } static void gst_identity_check_perfect (GstIdentity * identity, GstBuffer * buf) { GstClockTime timestamp; timestamp = GST_BUFFER_TIMESTAMP (buf); /* see if we need to do perfect stream checking */ /* invalid timestamp drops us out of check. FIXME: maybe warn ? */ if (timestamp != GST_CLOCK_TIME_NONE) { /* check if we had a previous buffer to compare to */ if (identity->prev_timestamp != GST_CLOCK_TIME_NONE && identity->prev_duration != GST_CLOCK_TIME_NONE) { guint64 offset, t_expected; gint64 dt; t_expected = identity->prev_timestamp + identity->prev_duration; dt = timestamp - t_expected; if (dt != 0) { GST_WARNING_OBJECT (identity, "Buffer not time-contiguous with previous one: " "prev ts %" GST_TIME_FORMAT ", prev dur %" GST_TIME_FORMAT ", new ts %" GST_TIME_FORMAT " (expected ts %" GST_TIME_FORMAT ", delta=%c%" GST_TIME_FORMAT ")", GST_TIME_ARGS (identity->prev_timestamp), GST_TIME_ARGS (identity->prev_duration), GST_TIME_ARGS (timestamp), GST_TIME_ARGS (t_expected), (dt < 0) ? '-' : '+', GST_TIME_ARGS ((dt < 0) ? (GstClockTime) (-dt) : dt)); } offset = GST_BUFFER_OFFSET (buf); if (identity->prev_offset_end != offset) { GST_WARNING_OBJECT (identity, "Buffer not data-contiguous with previous one: " "prev offset_end %" G_GINT64_FORMAT ", new offset %" G_GINT64_FORMAT, identity->prev_offset_end, offset); } } else { GST_DEBUG_OBJECT (identity, "can't check time-contiguity, no timestamp " "and/or duration were set on previous buffer"); } } } static void gst_identity_check_imperfect_timestamp (GstIdentity * identity, GstBuffer * buf) { GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buf); /* invalid timestamp drops us out of check. FIXME: maybe warn ? */ if (timestamp != GST_CLOCK_TIME_NONE) { /* check if we had a previous buffer to compare to */ if (identity->prev_timestamp != GST_CLOCK_TIME_NONE && identity->prev_duration != GST_CLOCK_TIME_NONE) { guint64 offset; GstClockTime t_expected; GstClockTimeDiff dt; offset = GST_BUFFER_OFFSET (buf); t_expected = identity->prev_timestamp + identity->prev_duration; dt = GST_CLOCK_DIFF (t_expected, timestamp); if (dt != 0) { /* * "imperfect-timestamp" bus message: * @identity: the identity instance * @prev-timestamp: the previous buffer timestamp * @prev-duration: the previous buffer duration * @prev-offset: the previous buffer offset * @prev-offset-end: the previous buffer offset end * @cur-timestamp: the current buffer timestamp * @cur-duration: the current buffer duration * @cur-offset: the current buffer offset * @cur-offset-end: the current buffer offset end * * This bus message gets emitted if the check-imperfect-timestamp * property is set and there is a gap in time between the * last buffer and the newly received buffer. */ gst_element_post_message (GST_ELEMENT (identity), gst_message_new_element (GST_OBJECT (identity), gst_structure_new ("imperfect-timestamp", "prev-timestamp", G_TYPE_UINT64, identity->prev_timestamp, "prev-duration", G_TYPE_UINT64, identity->prev_duration, "prev-offset", G_TYPE_UINT64, identity->prev_offset, "prev-offset-end", G_TYPE_UINT64, identity->prev_offset_end, "cur-timestamp", G_TYPE_UINT64, timestamp, "cur-duration", G_TYPE_UINT64, GST_BUFFER_DURATION (buf), "cur-offset", G_TYPE_UINT64, GST_BUFFER_OFFSET (buf), "cur-offset-end", G_TYPE_UINT64, GST_BUFFER_OFFSET_END (buf), NULL))); } } else { GST_DEBUG_OBJECT (identity, "can't check data-contiguity, no " "offset_end was set on previous buffer"); } } } static void gst_identity_check_imperfect_offset (GstIdentity * identity, GstBuffer * buf) { guint64 offset; offset = GST_BUFFER_OFFSET (buf); if (identity->prev_offset_end != offset && identity->prev_offset_end != GST_BUFFER_OFFSET_NONE && offset != GST_BUFFER_OFFSET_NONE) { /* * "imperfect-offset" bus message: * @identity: the identity instance * @prev-timestamp: the previous buffer timestamp * @prev-duration: the previous buffer duration * @prev-offset: the previous buffer offset * @prev-offset-end: the previous buffer offset end * @cur-timestamp: the current buffer timestamp * @cur-duration: the current buffer duration * @cur-offset: the current buffer offset * @cur-offset-end: the current buffer offset end * * This bus message gets emitted if the check-imperfect-offset * property is set and there is a gap in offsets between the * last buffer and the newly received buffer. */ gst_element_post_message (GST_ELEMENT (identity), gst_message_new_element (GST_OBJECT (identity), gst_structure_new ("imperfect-offset", "prev-timestamp", G_TYPE_UINT64, identity->prev_timestamp, "prev-duration", G_TYPE_UINT64, identity->prev_duration, "prev-offset", G_TYPE_UINT64, identity->prev_offset, "prev-offset-end", G_TYPE_UINT64, identity->prev_offset_end, "cur-timestamp", G_TYPE_UINT64, GST_BUFFER_TIMESTAMP (buf), "cur-duration", G_TYPE_UINT64, GST_BUFFER_DURATION (buf), "cur-offset", G_TYPE_UINT64, GST_BUFFER_OFFSET (buf), "cur-offset-end", G_TYPE_UINT64, GST_BUFFER_OFFSET_END (buf), NULL))); } else { GST_DEBUG_OBJECT (identity, "can't check offset contiguity, no offset " "and/or offset_end were set on previous buffer"); } } static GstFlowReturn gst_identity_transform_ip (GstBaseTransform * trans, GstBuffer * buf) { GstFlowReturn ret = GST_FLOW_OK; GstIdentity *identity = GST_IDENTITY (trans); GstClockTime runtimestamp = G_GINT64_CONSTANT (0); if (identity->check_perfect) gst_identity_check_perfect (identity, buf); if (identity->check_imperfect_timestamp) gst_identity_check_imperfect_timestamp (identity, buf); if (identity->check_imperfect_offset) gst_identity_check_imperfect_offset (identity, buf); /* update prev values */ identity->prev_timestamp = GST_BUFFER_TIMESTAMP (buf); identity->prev_duration = GST_BUFFER_DURATION (buf); identity->prev_offset_end = GST_BUFFER_OFFSET_END (buf); identity->prev_offset = GST_BUFFER_OFFSET (buf); if (identity->error_after >= 0) { identity->error_after--; if (identity->error_after == 0) { GST_ELEMENT_ERROR (identity, CORE, FAILED, (_("Failed after iterations as requested.")), (NULL)); return GST_FLOW_ERROR; } } if (identity->drop_probability > 0.0) { if ((gfloat) (1.0 * rand () / (RAND_MAX)) < identity->drop_probability) { if (!identity->silent) { GST_OBJECT_LOCK (identity); g_free (identity->last_message); identity->last_message = g_strdup_printf ("dropping ******* (%s:%s)i (%d bytes, timestamp: %" GST_TIME_FORMAT ", duration: %" GST_TIME_FORMAT ", offset: %" G_GINT64_FORMAT ", offset_end: % " G_GINT64_FORMAT ", flags: %d) %p", GST_DEBUG_PAD_NAME (trans->sinkpad), GST_BUFFER_SIZE (buf), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf), GST_BUFFER_FLAGS (buf), buf); GST_OBJECT_UNLOCK (identity); g_object_notify (G_OBJECT (identity), "last-message"); } /* return DROPPED to basetransform. */ return GST_BASE_TRANSFORM_FLOW_DROPPED; } } if (identity->dump) { gst_util_dump_mem (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)); } if (!identity->silent) { GST_OBJECT_LOCK (identity); g_free (identity->last_message); identity->last_message = g_strdup_printf ("chain ******* (%s:%s)i (%d bytes, timestamp: %" GST_TIME_FORMAT ", duration: %" GST_TIME_FORMAT ", offset: %" G_GINT64_FORMAT ", offset_end: % " G_GINT64_FORMAT ", flags: %d) %p", GST_DEBUG_PAD_NAME (trans->sinkpad), GST_BUFFER_SIZE (buf), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf), GST_BUFFER_FLAGS (buf), buf); GST_OBJECT_UNLOCK (identity); g_object_notify (G_OBJECT (identity), "last-message"); } if (identity->datarate > 0) { GstClockTime time = identity->offset * GST_SECOND / identity->datarate; GST_BUFFER_TIMESTAMP (buf) = time; GST_BUFFER_DURATION (buf) = GST_BUFFER_SIZE (buf) * GST_SECOND / identity->datarate; } g_signal_emit (G_OBJECT (identity), gst_identity_signals[SIGNAL_HANDOFF], 0, buf); if (trans->segment.format == GST_FORMAT_TIME) runtimestamp = gst_segment_to_running_time (&trans->segment, GST_FORMAT_TIME, GST_BUFFER_TIMESTAMP (buf)); if ((identity->sync) && (trans->segment.format == GST_FORMAT_TIME)) { GstClock *clock; GST_OBJECT_LOCK (identity); if ((clock = GST_ELEMENT (identity)->clock)) { GstClockReturn cret; GstClockTime timestamp; timestamp = runtimestamp + GST_ELEMENT (identity)->base_time; /* save id if we need to unlock */ /* FIXME: actually unlock this somewhere in the state changes */ identity->clock_id = gst_clock_new_single_shot_id (clock, timestamp); GST_OBJECT_UNLOCK (identity); cret = gst_clock_id_wait (identity->clock_id, NULL); GST_OBJECT_LOCK (identity); if (identity->clock_id) { gst_clock_id_unref (identity->clock_id); identity->clock_id = NULL; } if (cret == GST_CLOCK_UNSCHEDULED) ret = GST_FLOW_UNEXPECTED; } GST_OBJECT_UNLOCK (identity); } identity->offset += GST_BUFFER_SIZE (buf); if (identity->sleep_time && ret == GST_FLOW_OK) g_usleep (identity->sleep_time); if (identity->single_segment && (trans->segment.format == GST_FORMAT_TIME) && (ret == GST_FLOW_OK)) { GST_BUFFER_TIMESTAMP (buf) = runtimestamp; GST_BUFFER_OFFSET (buf) = GST_CLOCK_TIME_NONE; GST_BUFFER_OFFSET_END (buf) = GST_CLOCK_TIME_NONE; } return ret; } static void gst_identity_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstIdentity *identity; identity = GST_IDENTITY (object); switch (prop_id) { case PROP_SLEEP_TIME: identity->sleep_time = g_value_get_uint (value); break; case PROP_SILENT: identity->silent = g_value_get_boolean (value); break; case PROP_SINGLE_SEGMENT: identity->single_segment = g_value_get_boolean (value); break; case PROP_DUMP: identity->dump = g_value_get_boolean (value); break; case PROP_ERROR_AFTER: identity->error_after = g_value_get_int (value); break; case PROP_DROP_PROBABILITY: identity->drop_probability = g_value_get_float (value); break; case PROP_DATARATE: identity->datarate = g_value_get_int (value); break; case PROP_SYNC: identity->sync = g_value_get_boolean (value); break; case PROP_CHECK_PERFECT: identity->check_perfect = g_value_get_boolean (value); break; case PROP_CHECK_IMPERFECT_TIMESTAMP: identity->check_imperfect_timestamp = g_value_get_boolean (value); break; case PROP_CHECK_IMPERFECT_OFFSET: identity->check_imperfect_offset = g_value_get_boolean (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_identity_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstIdentity *identity; identity = GST_IDENTITY (object); switch (prop_id) { case PROP_SLEEP_TIME: g_value_set_uint (value, identity->sleep_time); break; case PROP_ERROR_AFTER: g_value_set_int (value, identity->error_after); break; case PROP_DROP_PROBABILITY: g_value_set_float (value, identity->drop_probability); break; case PROP_DATARATE: g_value_set_int (value, identity->datarate); break; case PROP_SILENT: g_value_set_boolean (value, identity->silent); break; case PROP_SINGLE_SEGMENT: g_value_set_boolean (value, identity->single_segment); break; case PROP_DUMP: g_value_set_boolean (value, identity->dump); break; case PROP_LAST_MESSAGE: GST_OBJECT_LOCK (identity); g_value_set_string (value, identity->last_message); GST_OBJECT_UNLOCK (identity); break; case PROP_SYNC: g_value_set_boolean (value, identity->sync); break; case PROP_CHECK_PERFECT: g_value_set_boolean (value, identity->check_perfect); break; case PROP_CHECK_IMPERFECT_TIMESTAMP: g_value_set_boolean (value, identity->check_imperfect_timestamp); break; case PROP_CHECK_IMPERFECT_OFFSET: g_value_set_boolean (value, identity->check_imperfect_offset); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean gst_identity_start (GstBaseTransform * trans) { GstIdentity *identity; identity = GST_IDENTITY (trans); identity->offset = 0; identity->prev_timestamp = GST_CLOCK_TIME_NONE; identity->prev_duration = GST_CLOCK_TIME_NONE; identity->prev_offset_end = -1; identity->prev_offset = -1; return TRUE; } static gboolean gst_identity_stop (GstBaseTransform * trans) { GstIdentity *identity; identity = GST_IDENTITY (trans); GST_OBJECT_LOCK (identity); g_free (identity->last_message); identity->last_message = NULL; GST_OBJECT_UNLOCK (identity); return TRUE; }