index f9bfdebbcda4d327d20075e358cf2e14a59ff741..f51ca5ae7591f819f98283f030326176aaa63fd7 100644 (file)
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
+ * 2005 Wim Taymans <wim@fluendo.com>
*
- * gstidentity.c:
+ * gstidentity.c:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
-
-
-#include <stdlib.h>
+/**
+ * SECTION:element-identity
+ *
+ * Dummy element that passes incoming data through unmodified. It has some
+ * useful diagnostic functions, such as offset and timestamp checking.
+ */
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
+#include <stdlib.h>
+
+#include "../../gst/gst-i18n-lib.h"
#include "gstidentity.h"
+#include <gst/gstmarshal.h>
-GST_DEBUG_CATEGORY_STATIC (gst_identity_debug);
-#define GST_CAT_DEFAULT gst_identity_debug
+static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
-GstElementDetails gst_identity_details = GST_ELEMENT_DETAILS (
- "Identity",
- "Generic",
- "Pass data without modification",
- "Erik Walthinsen <omega@cse.ogi.edu>"
-);
+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
/* Identity signals and args */
-enum {
+enum
+{
SIGNAL_HANDOFF,
/* FILL ME */
LAST_SIGNAL
};
-enum {
- ARG_0,
- ARG_LOOP_BASED,
- ARG_SLEEP_TIME,
- ARG_DUPLICATE,
- ARG_ERROR_AFTER,
- ARG_DROP_PROBABILITY,
- ARG_SILENT,
- ARG_LAST_MESSAGE,
- ARG_DUMP,
+#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
+#define DEFAULT_SIGNAL_HANDOFFS TRUE
+
+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,
+ PROP_SIGNAL_HANDOFFS
};
#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_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 void gst_identity_chain (GstPad *pad, GstData *_data);
+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 GstFlowReturn gst_identity_prepare_output_buffer (GstBaseTransform
+ * trans, GstBuffer * in_buf, gint out_size, GstCaps * out_caps,
+ GstBuffer ** out_buf);
+static gboolean gst_identity_start (GstBaseTransform * trans);
+static gboolean gst_identity_stop (GstBaseTransform * trans);
+static GstStateChangeReturn gst_identity_change_state (GstElement * element,
+ GstStateChange transition);
static guint gst_identity_signals[LAST_SIGNAL] = { 0 };
+static GParamSpec *pspec_last_message = NULL;
+
static void
gst_identity_base_init (gpointer g_class)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
-
- gst_element_class_set_details (gstelement_class, &gst_identity_details);
+
+ gst_element_class_set_details_simple (gstelement_class,
+ "Identity",
+ "Generic",
+ "Pass data without modification", "Erik Walthinsen <omega@cse.ogi.edu>");
+ 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));
}
-static void
-gst_identity_class_init (GstIdentityClass *klass)
+
+static void
+gst_identity_finalize (GObject * object)
{
- GObjectClass *gobject_class;
+ GstIdentity *identity;
- gobject_class = G_OBJECT_CLASS (klass);
+ identity = GST_IDENTITY (object);
+ g_free (identity->last_message);
- 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",
- TRUE, 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, 0, 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, 1, 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, -1, 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, 0.0, G_PARAM_READWRITE));
- g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SILENT,
- g_param_spec_boolean ("silent", "silent", "silent",
- FALSE, 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",
- FALSE, G_PARAM_READWRITE));
+#if !GLIB_CHECK_VERSION(2,26,0)
+ g_static_rec_mutex_free (&identity->notify_lock);
+#endif
- 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__POINTER, G_TYPE_NONE, 1,
- GST_TYPE_BUFFER);
+ 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);
- gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_identity_set_property);
- gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_identity_get_property);
+ callback (data1, gst_value_get_mini_object (param_values + 1), data2);
}
-static void
-gst_identity_init (GstIdentity *identity)
+static void
+gst_identity_class_init (GstIdentityClass * klass)
{
- identity->sinkpad = gst_pad_new ("sink", GST_PAD_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_link_function (identity->sinkpad, gst_pad_proxy_pad_link);
- gst_pad_set_getcaps_function (identity->sinkpad, gst_pad_proxy_getcaps);
-
- identity->srcpad = gst_pad_new ("src", GST_PAD_SRC);
- gst_element_add_pad (GST_ELEMENT (identity), identity->srcpad);
- gst_pad_set_link_function (identity->srcpad, gst_pad_proxy_pad_link);
- gst_pad_set_getcaps_function (identity->srcpad, gst_pad_proxy_getcaps);
-
- identity->loop_based = FALSE;
- identity->sleep_time = 0;
- identity->duplicate = 1;
- identity->error_after = -1;
- identity->drop_probability = 0.0;
- identity->silent = FALSE;
- identity->dump = FALSE;
+ 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_identity_set_property;
+ gobject_class->get_property = 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_PARAM_STATIC_STRINGS));
+ 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_PARAM_STATIC_STRINGS));
+ 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_PARAM_STATIC_STRINGS));
+ 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_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (gobject_class, PROP_SILENT,
+ g_param_spec_boolean ("silent", "silent", "silent", DEFAULT_SILENT,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ 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_PARAM_STATIC_STRINGS));
+ pspec_last_message = g_param_spec_string ("last-message", "last-message",
+ "last-message", NULL, 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_DUMP,
+ g_param_spec_boolean ("dump", "Dump", "Dump buffer contents to stdout",
+ DEFAULT_DUMP, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ 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_PARAM_STATIC_STRINGS));
+ 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_PARAM_STATIC_STRINGS));
+ 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_PARAM_STATIC_STRINGS));
+ 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 | G_PARAM_STATIC_STRINGS));
+
+ /**
+ * GstIdentity:signal-handoffs
+ *
+ * If set to #TRUE, the identity will emit a handoff signal when handling a buffer.
+ * When set to #FALSE, no signal will be emited, which might improve performance.
+ *
+ * Since: 0.10.16
+ */
+ g_object_class_install_property (gobject_class, PROP_SIGNAL_HANDOFFS,
+ g_param_spec_boolean ("signal-handoffs",
+ "Signal handoffs", "Send a signal before pushing the buffer",
+ DEFAULT_SIGNAL_HANDOFFS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ /**
+ * 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_identity_finalize;
+
+ gstelement_class->change_state =
+ GST_DEBUG_FUNCPTR (gst_identity_change_state);
+
+ gstbasetrans_class->event = GST_DEBUG_FUNCPTR (gst_identity_event);
+ gstbasetrans_class->transform_ip =
+ GST_DEBUG_FUNCPTR (gst_identity_transform_ip);
+ gstbasetrans_class->prepare_output_buffer =
+ GST_DEBUG_FUNCPTR (gst_identity_prepare_output_buffer);
+ 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)
+{
+ 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;
- identity->srccaps = NULL;
+ identity->signal_handoffs = DEFAULT_SIGNAL_HANDOFFS;
+
+#if !GLIB_CHECK_VERSION(2,26,0)
+ g_static_rec_mutex_init (&identity->notify_lock);
+#endif
+
+ gst_base_transform_set_gap_aware (GST_BASE_TRANSFORM_CAST (identity), TRUE);
+}
+
+static void
+gst_identity_notify_last_message (GstIdentity * identity)
+{
+ /* FIXME: this hacks around a bug in GLib/GObject: doing concurrent
+ * g_object_notify() on the same object might lead to crashes, see
+ * http://bugzilla.gnome.org/show_bug.cgi?id=166020#c60 and follow-ups.
+ * So we really don't want to do a g_object_notify() here for out-of-band
+ * events with the streaming thread possibly also doing a g_object_notify()
+ * for an in-band buffer or event. This is fixed in GLib >= 2.26 */
+#if !GLIB_CHECK_VERSION(2,26,0)
+ g_static_rec_mutex_lock (&identity->notify_lock);
+ g_object_notify ((GObject *) identity, "last-message");
+ g_static_rec_mutex_unlock (&identity->notify_lock);
+#else
+ g_object_notify_by_pspec ((GObject *) identity, pspec_last_message);
+#endif
}
-static void
-gst_identity_chain (GstPad *pad, GstData *_data)
+static gboolean
+gst_identity_event (GstBaseTransform * trans, GstEvent * event)
{
- GstBuffer *buf = GST_BUFFER (_data);
GstIdentity *identity;
- guint i;
+ gboolean ret = TRUE;
- g_return_if_fail (pad != NULL);
- g_return_if_fail (GST_IS_PAD (pad));
- g_return_if_fail (buf != NULL);
+ identity = GST_IDENTITY (trans);
- identity = GST_IDENTITY (gst_pad_get_parent (pad));
+ 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);
+
+ gst_identity_notify_last_message (identity);
+ }
+
+ 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);
+
+ gst_pad_event_default (trans->sinkpad, news);
+ }
+ }
+
+ /* Reset previous timestamp, duration and offsets on NEWSEGMENT
+ * to prevent false warnings when checking for perfect streams */
+ if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) {
+ identity->prev_timestamp = identity->prev_duration = GST_CLOCK_TIME_NONE;
+ identity->prev_offset = identity->prev_offset_end = GST_BUFFER_OFFSET_NONE;
+ }
+
+ ret = parent_class->event (trans, event);
+
+ if (GST_EVENT_TYPE (event) == GST_EVENT_FLUSH_START) {
+ GST_OBJECT_LOCK (identity);
+ if (identity->clock_id) {
+ GST_DEBUG_OBJECT (identity, "unlock clock wait");
+ gst_clock_id_unschedule (identity->clock_id);
+ gst_clock_id_unref (identity->clock_id);
+ identity->clock_id = NULL;
+ }
+ GST_OBJECT_UNLOCK (identity);
+ }
+
+ if (identity->single_segment
+ && (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT)) {
+ /* eat up segments */
+ ret = FALSE;
+ }
+
+ return ret;
+}
+
+static GstFlowReturn
+gst_identity_prepare_output_buffer (GstBaseTransform * trans,
+ GstBuffer * in_buf, gint out_size, GstCaps * out_caps, GstBuffer ** out_buf)
+{
+ GstIdentity *identity = GST_IDENTITY (trans);
+
+ /* only bother if we may have to alter metadata */
+ if (identity->datarate > 0 || identity->single_segment) {
+ if (gst_buffer_is_metadata_writable (in_buf))
+ *out_buf = gst_buffer_ref (in_buf);
+ else {
+ /* make even less writable */
+ gst_buffer_ref (in_buf);
+ /* extra ref is dropped going through the official process */
+ *out_buf = gst_buffer_make_metadata_writable (in_buf);
+ }
+ } else
+ *out_buf = gst_buffer_ref (in_buf);
+
+ return GST_FLOW_OK;
+}
+
+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 &&
+ identity->prev_offset_end != GST_BUFFER_OFFSET_NONE &&
+ offset != GST_BUFFER_OFFSET_NONE) {
+ 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) {
+ GstClockTime t_expected;
+ GstClockTimeDiff dt;
+
+ 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 const gchar *
+print_pretty_time (gchar * ts_str, gsize ts_str_len, GstClockTime ts)
+{
+ if (ts == GST_CLOCK_TIME_NONE)
+ return "none";
+
+ g_snprintf (ts_str, ts_str_len, "%" GST_TIME_FORMAT, GST_TIME_ARGS (ts));
+ return ts_str;
+}
+
+static void
+gst_identity_update_last_message_for_buffer (GstIdentity * identity,
+ const gchar * action, GstBuffer * buf)
+{
+ gchar ts_str[64], dur_str[64];
+
+ GST_OBJECT_LOCK (identity);
+
+ g_free (identity->last_message);
+ identity->last_message = g_strdup_printf ("%s ******* (%s:%s)i "
+ "(%u bytes, timestamp: %s, duration: %s, offset: %" G_GINT64_FORMAT ", "
+ "offset_end: % " G_GINT64_FORMAT ", flags: %d) %p", action,
+ GST_DEBUG_PAD_NAME (GST_BASE_TRANSFORM_CAST (identity)->sinkpad),
+ GST_BUFFER_SIZE (buf),
+ print_pretty_time (ts_str, sizeof (ts_str), GST_BUFFER_TIMESTAMP (buf)),
+ print_pretty_time (dur_str, sizeof (dur_str), GST_BUFFER_DURATION (buf)),
+ GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf),
+ GST_BUFFER_FLAGS (buf), buf);
+
+ GST_OBJECT_UNLOCK (identity);
+
+ gst_identity_notify_last_message (identity);
+}
+
+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_buffer_unref (buf);
- gst_element_error (GST_ELEMENT (identity), "errored after iterations as requested");
- return;
+ 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->last_message != NULL) {
- g_free (identity->last_message);
+ if ((gfloat) (1.0 * rand () / (RAND_MAX)) < identity->drop_probability) {
+ if (!identity->silent) {
+ gst_identity_update_last_message_for_buffer (identity, "dropping", buf);
}
- identity->last_message = g_strdup_printf ("dropping ******* (%s:%s)i (%d bytes, %"
- G_GINT64_FORMAT ")",
- GST_DEBUG_PAD_NAME (identity->sinkpad), GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf));
- g_object_notify (G_OBJECT (identity), "last-message");
- gst_buffer_unref (buf);
- return;
+ /* 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));
}
- for (i = identity->duplicate; i; i--) {
- if (!identity->silent) {
- g_free (identity->last_message);
- identity->last_message = g_strdup_printf ("chain ******* (%s:%s)i (%d bytes, %"
- G_GINT64_FORMAT ")",
- GST_DEBUG_PAD_NAME (identity->sinkpad), GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf));
- g_object_notify (G_OBJECT (identity), "last-message");
- }
+ if (!identity->silent) {
+ gst_identity_update_last_message_for_buffer (identity, "chain", buf);
+ }
- g_signal_emit (G_OBJECT (identity), gst_identity_signals[SIGNAL_HANDOFF], 0,
- buf);
+ if (identity->datarate > 0) {
+ GstClockTime time = gst_util_uint64_scale_int (identity->offset,
+ GST_SECOND, identity->datarate);
- if (i>1)
- gst_buffer_ref (buf);
+ GST_BUFFER_TIMESTAMP (buf) = time;
+ GST_BUFFER_DURATION (buf) =
+ GST_BUFFER_SIZE (buf) * GST_SECOND / identity->datarate;
+ }
- gst_pad_push (identity->srcpad, GST_DATA (buf));
+ if (identity->signal_handoffs)
+ g_signal_emit (identity, gst_identity_signals[SIGNAL_HANDOFF], 0, buf);
- if (identity->sleep_time)
- g_usleep (identity->sleep_time);
- }
-}
+ if (trans->segment.format == GST_FORMAT_TIME)
+ runtimestamp = gst_segment_to_running_time (&trans->segment,
+ GST_FORMAT_TIME, GST_BUFFER_TIMESTAMP (buf));
-static void
-gst_identity_loop (GstElement *element)
-{
- GstIdentity *identity;
- GstBuffer *buf;
+ if ((identity->sync) && (trans->segment.format == GST_FORMAT_TIME)) {
+ GstClock *clock;
- g_return_if_fail (element != NULL);
- g_return_if_fail (GST_IS_IDENTITY (element));
+ GST_OBJECT_LOCK (identity);
+ if ((clock = GST_ELEMENT (identity)->clock)) {
+ GstClockReturn cret;
+ GstClockTime timestamp;
- identity = GST_IDENTITY (element);
-
- buf = GST_BUFFER (gst_pad_pull (identity->sinkpad));
- if (GST_IS_EVENT (buf)) {
- GstEvent *event = GST_EVENT (buf);
+ timestamp = runtimestamp + GST_ELEMENT (identity)->base_time;
- if (GST_EVENT_IS_INTERRUPT (event)) {
- gst_event_unref (event);
- }
- else {
- gst_pad_event_default (identity->sinkpad, event);
+ /* save id if we need to unlock */
+ 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);
}
- else {
- gst_identity_chain (identity->sinkpad, GST_DATA (buf));
+
+ 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)
+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_element_set_loop_function (GST_ELEMENT (identity), gst_identity_loop);
- gst_pad_set_chain_function (identity->sinkpad, NULL);
- }
- else {
- gst_pad_set_chain_function (identity->sinkpad, gst_identity_chain);
- gst_element_set_loop_function (GST_ELEMENT (identity), NULL);
- }
- break;
- case ARG_SLEEP_TIME:
+ case PROP_SLEEP_TIME:
identity->sleep_time = g_value_get_uint (value);
break;
- case ARG_SILENT:
+ case PROP_SILENT:
identity->silent = g_value_get_boolean (value);
break;
- case ARG_DUPLICATE:
- identity->duplicate = g_value_get_uint (value);
+ case PROP_SINGLE_SEGMENT:
+ identity->single_segment = g_value_get_boolean (value);
break;
- case ARG_DUMP:
+ case PROP_DUMP:
identity->dump = g_value_get_boolean (value);
break;
- case ARG_ERROR_AFTER:
+ case PROP_ERROR_AFTER:
identity->error_after = g_value_get_int (value);
break;
- case ARG_DROP_PROBABILITY:
+ 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;
+ case PROP_SIGNAL_HANDOFFS:
+ identity->signal_handoffs = 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) {
+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:
+ case PROP_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:
+ case PROP_ERROR_AFTER:
g_value_set_int (value, identity->error_after);
break;
- case ARG_DROP_PROBABILITY:
+ case PROP_DROP_PROBABILITY:
g_value_set_float (value, identity->drop_probability);
break;
- case ARG_SILENT:
+ case PROP_DATARATE:
+ g_value_set_int (value, identity->datarate);
+ break;
+ case PROP_SILENT:
g_value_set_boolean (value, identity->silent);
break;
- case ARG_DUMP:
+ 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 ARG_LAST_MESSAGE:
+ 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;
+ case PROP_SIGNAL_HANDOFFS:
+ g_value_set_boolean (value, identity->signal_handoffs);
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 = GST_BUFFER_OFFSET_NONE;
+ identity->prev_offset = GST_BUFFER_OFFSET_NONE;
+
+ 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;
+}
+
+static GstStateChangeReturn
+gst_identity_change_state (GstElement * element, GstStateChange transition)
+{
+ GstStateChangeReturn ret;
+ GstIdentity *identity = GST_IDENTITY (element);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_NULL_TO_READY:
+ break;
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ GST_OBJECT_LOCK (identity);
+ if (identity->clock_id) {
+ GST_DEBUG_OBJECT (identity, "unlock clock wait");
+ gst_clock_id_unschedule (identity->clock_id);
+ gst_clock_id_unref (identity->clock_id);
+ identity->clock_id = NULL;
+ }
+ GST_OBJECT_UNLOCK (identity);
+ break;
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ break;
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}