/* 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. */ #include #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "../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 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_LOOP_BASED FALSE #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_DUMP FALSE #define DEFAULT_SYNC FALSE #define DEFAULT_CHECK_PERFECT FALSE enum { ARG_0, ARG_LOOP_BASED, ARG_SLEEP_TIME, ARG_DUPLICATE, ARG_ERROR_AFTER, ARG_DROP_PROBABILITY, ARG_DATARATE, ARG_SILENT, ARG_LAST_MESSAGE, ARG_DUMP, ARG_SYNC, ARG_CHECK_PERFECT }; #define _do_init(bla) \ GST_DEBUG_CATEGORY_INIT (gst_identity_debug, "identity", 0, "identity element"); GST_BOILERPLATE_FULL (GstIdentity, gst_identity, GstElement, GST_TYPE_ELEMENT, _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 GstElementStateReturn gst_identity_change_state (GstElement * element); static gboolean gst_identity_event (GstPad * pad, GstEvent * event); static GstFlowReturn gst_identity_chain (GstPad * pad, GstBuffer * buffer); static GstFlowReturn gst_identity_getrange (GstPad * pad, guint64 offset, guint length, GstBuffer ** buffer); static void gst_identity_set_clock (GstElement * element, GstClock * clock); static GstCaps *gst_identity_proxy_getcaps (GstPad * pad); 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); } static void gst_identity_class_init (GstIdentityClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; gobject_class = G_OBJECT_CLASS (klass); gstelement_class = GST_ELEMENT_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 (G_OBJECT_CLASS (klass), ARG_LOOP_BASED, g_param_spec_boolean ("loop-based", "Loop-based", "Set to TRUE to use loop-based rather than chain-based scheduling", DEFAULT_LOOP_BASED, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_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 (G_OBJECT_CLASS (klass), ARG_DUPLICATE, g_param_spec_uint ("duplicate", "Duplicate Buffers", "Push the buffers N times", 0, G_MAXUINT, DEFAULT_DUPLICATE, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_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 (G_OBJECT_CLASS (klass), ARG_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 (G_OBJECT_CLASS (klass), ARG_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 (G_OBJECT_CLASS (klass), ARG_SILENT, g_param_spec_boolean ("silent", "silent", "silent", DEFAULT_SILENT, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LAST_MESSAGE, g_param_spec_string ("last-message", "last-message", "last-message", NULL, G_PARAM_READABLE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DUMP, g_param_spec_boolean ("dump", "Dump", "Dump buffer contents", DEFAULT_DUMP, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SYNC, g_param_spec_boolean ("sync", "Synchronize", "Synchronize to pipeline clock", DEFAULT_SYNC, G_PARAM_READWRITE)); g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_CHECK_PERFECT, g_param_spec_boolean ("check-perfect", "Check For Perfect Stream", "Verify that the stream is time- and data-contiguous", DEFAULT_CHECK_PERFECT, G_PARAM_READWRITE)); 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, gst_marshal_VOID__BOXED, G_TYPE_NONE, 1, GST_TYPE_BUFFER | G_SIGNAL_TYPE_STATIC_SCOPE); gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_identity_finalize); gstelement_class->set_clock = GST_DEBUG_FUNCPTR (gst_identity_set_clock); gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_identity_change_state); } static void gst_identity_init (GstIdentity * identity) { identity->sinkpad = gst_pad_new_from_template (gst_static_pad_template_get (&sinktemplate), "sink"); gst_element_add_pad (GST_ELEMENT (identity), identity->sinkpad); gst_pad_set_chain_function (identity->sinkpad, GST_DEBUG_FUNCPTR (gst_identity_chain)); gst_pad_set_getcaps_function (identity->sinkpad, GST_DEBUG_FUNCPTR (gst_identity_proxy_getcaps)); gst_pad_set_event_function (identity->sinkpad, GST_DEBUG_FUNCPTR (gst_identity_event)); identity->srcpad = gst_pad_new_from_template (gst_static_pad_template_get (&srctemplate), "src"); gst_pad_set_getcaps_function (identity->srcpad, GST_DEBUG_FUNCPTR (gst_identity_proxy_getcaps)); gst_pad_set_getrange_function (identity->srcpad, GST_DEBUG_FUNCPTR (gst_identity_getrange)); gst_element_add_pad (GST_ELEMENT (identity), identity->srcpad); identity->loop_based = DEFAULT_LOOP_BASED; identity->sleep_time = DEFAULT_SLEEP_TIME; identity->duplicate = DEFAULT_DUPLICATE; identity->error_after = DEFAULT_ERROR_AFTER; identity->drop_probability = DEFAULT_DROP_PROBABILITY; identity->datarate = DEFAULT_DATARATE; identity->silent = DEFAULT_SILENT; identity->sync = DEFAULT_SYNC; identity->check_perfect = DEFAULT_CHECK_PERFECT; identity->dump = DEFAULT_DUMP; identity->last_message = NULL; identity->srccaps = NULL; } static void gst_identity_set_clock (GstElement * element, GstClock * clock) { GstIdentity *identity = GST_IDENTITY (element); gst_object_replace ((GstObject **) & identity->clock, (GstObject *) clock); } static GstCaps * gst_identity_proxy_getcaps (GstPad * pad) { GstPad *otherpad; GstIdentity *identity = GST_IDENTITY (GST_OBJECT_PARENT (pad)); otherpad = pad == identity->srcpad ? identity->sinkpad : identity->srcpad; return gst_pad_peer_get_caps (otherpad); } static gboolean gst_identity_event (GstPad * pad, GstEvent * event) { GstIdentity *identity; identity = GST_IDENTITY (GST_PAD_PARENT (pad)); if (!identity->silent) { g_free (identity->last_message); identity->last_message = g_strdup_printf ("chain ******* (%s:%s)E (type: %d) %p", GST_DEBUG_PAD_NAME (pad), GST_EVENT_TYPE (event), event); g_object_notify (G_OBJECT (identity), "last_message"); } return gst_pad_push_event (identity->srcpad, event); } static GstFlowReturn gst_identity_getrange (GstPad * pad, guint64 offset, guint length, GstBuffer ** buffer) { GstIdentity *identity; identity = GST_IDENTITY (GST_PAD_PARENT (pad)); return gst_pad_pull_range (identity->sinkpad, offset, length, buffer); } static GstFlowReturn gst_identity_chain (GstPad * pad, GstBuffer * buffer) { GstBuffer *buf = GST_BUFFER (buffer); GstIdentity *identity; GstFlowReturn result = GST_FLOW_OK; guint i; g_return_val_if_fail (pad != NULL, GST_FLOW_ERROR); g_return_val_if_fail (GST_IS_PAD (pad), GST_FLOW_ERROR); g_return_val_if_fail (buf != NULL, GST_FLOW_ERROR); identity = GST_IDENTITY (GST_PAD_PARENT (pad)); /* see if we need to do perfect stream checking */ /* invalid timestamp drops us out of check. FIXME: maybe warn ? */ if (identity->check_perfect && GST_BUFFER_TIMESTAMP (buf) != GST_CLOCK_TIME_NONE) { /* check if we had a previous buffer to compare to */ if (identity->prev_timestamp != GST_CLOCK_TIME_NONE) { if (identity->prev_timestamp + identity->prev_duration != GST_BUFFER_TIMESTAMP (buf)) { 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, GST_TIME_ARGS (identity->prev_timestamp), GST_TIME_ARGS (identity->prev_duration), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf))); } if (identity->prev_offset_end != GST_BUFFER_OFFSET (buf)) { 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, GST_BUFFER_OFFSET (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); } if (identity->error_after >= 0) { identity->error_after--; if (identity->error_after == 0) { gst_buffer_unref (buf); 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) { 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 (identity->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); g_object_notify (G_OBJECT (identity), "last-message"); gst_buffer_unref (buf); return GST_FLOW_OK; } } if (identity->dump) { gst_util_dump_mem (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)); } for (i = identity->duplicate; i; i--) { GstClockTime time; if (!identity->silent) { 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 (identity->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); g_object_notify (G_OBJECT (identity), "last-message"); } time = GST_BUFFER_TIMESTAMP (buf); if (identity->datarate > 0) { time = identity->bytes_handled * 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 (i > 1) gst_buffer_ref (buf); if (identity->sync) { if (identity->clock) { gst_element_wait (GST_ELEMENT (identity), time); } } identity->bytes_handled += GST_BUFFER_SIZE (buf); result = gst_pad_push (identity->srcpad, buf); if (identity->sleep_time) g_usleep (identity->sleep_time); } return result; } static void gst_identity_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstIdentity *identity; /* it's not null if we got it, but it might not be ours */ g_return_if_fail (GST_IS_IDENTITY (object)); identity = GST_IDENTITY (object); switch (prop_id) { case ARG_LOOP_BASED: identity->loop_based = g_value_get_boolean (value); if (identity->loop_based) { gst_pad_set_chain_function (identity->sinkpad, NULL); } else { gst_pad_set_chain_function (identity->sinkpad, gst_identity_chain); } break; case ARG_SLEEP_TIME: identity->sleep_time = g_value_get_uint (value); break; case ARG_SILENT: identity->silent = g_value_get_boolean (value); break; case ARG_DUPLICATE: identity->duplicate = g_value_get_uint (value); break; case ARG_DUMP: identity->dump = g_value_get_boolean (value); break; case ARG_ERROR_AFTER: identity->error_after = g_value_get_int (value); break; case ARG_DROP_PROBABILITY: identity->drop_probability = g_value_get_float (value); break; case ARG_DATARATE: identity->datarate = g_value_get_int (value); break; case ARG_SYNC: identity->sync = g_value_get_boolean (value); break; case ARG_CHECK_PERFECT: identity->check_perfect = 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; /* it's not null if we got it, but it might not be ours */ g_return_if_fail (GST_IS_IDENTITY (object)); identity = GST_IDENTITY (object); switch (prop_id) { case ARG_LOOP_BASED: g_value_set_boolean (value, identity->loop_based); break; case ARG_SLEEP_TIME: g_value_set_uint (value, identity->sleep_time); break; case ARG_DUPLICATE: g_value_set_uint (value, identity->duplicate); break; case ARG_ERROR_AFTER: g_value_set_int (value, identity->error_after); break; case ARG_DROP_PROBABILITY: g_value_set_float (value, identity->drop_probability); break; case ARG_DATARATE: g_value_set_int (value, identity->datarate); break; case ARG_SILENT: g_value_set_boolean (value, identity->silent); break; case ARG_DUMP: g_value_set_boolean (value, identity->dump); break; case ARG_LAST_MESSAGE: g_value_set_string (value, identity->last_message); break; case ARG_SYNC: g_value_set_boolean (value, identity->sync); break; case ARG_CHECK_PERFECT: g_value_set_boolean (value, identity->check_perfect); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static GstElementStateReturn gst_identity_change_state (GstElement * element) { GstIdentity *identity; g_return_val_if_fail (GST_IS_IDENTITY (element), GST_STATE_FAILURE); identity = GST_IDENTITY (element); switch (GST_STATE_TRANSITION (element)) { case GST_STATE_NULL_TO_READY: break; case GST_STATE_READY_TO_PAUSED: identity->bytes_handled = 0; identity->prev_timestamp = GST_CLOCK_TIME_NONE; identity->prev_duration = GST_CLOCK_TIME_NONE; identity->prev_offset_end = -1; break; case GST_STATE_PAUSED_TO_PLAYING: case GST_STATE_PLAYING_TO_PAUSED: break; case GST_STATE_PAUSED_TO_READY: g_free (identity->last_message); identity->last_message = NULL; break; case GST_STATE_READY_TO_NULL: break; default: break; } if (GST_ELEMENT_CLASS (parent_class)->change_state) return GST_ELEMENT_CLASS (parent_class)->change_state (element); return GST_STATE_SUCCESS; }