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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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3cda4e2eaa
Original commit message from CVS: sync with the current CVS glib API
292 lines
8.5 KiB
C
292 lines
8.5 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstidentity.c:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <gstidentity.h>
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GstElementDetails gst_identity_details = {
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"Identity",
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"Filter",
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"Pass data without modification",
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VERSION,
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"Erik Walthinsen <omega@cse.ogi.edu>",
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"(C) 1999",
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};
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/* Identity signals and args */
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enum {
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SIGNAL_HANDOFF,
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/* FILL ME */
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LAST_SIGNAL
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};
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enum {
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ARG_0,
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ARG_LOOP_BASED,
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ARG_SLEEP_TIME,
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ARG_DUPLICATE,
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ARG_SILENT,
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};
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static void gst_identity_class_init (GstIdentityClass *klass);
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static void gst_identity_init (GstIdentity *identity);
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static void gst_identity_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
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static void gst_identity_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
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static void gst_identity_chain (GstPad *pad, GstBuffer *buf);
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static GstElementClass *parent_class = NULL;
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static guint gst_identity_signals[LAST_SIGNAL] = { 0 };
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GType
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gst_identity_get_type (void)
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{
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static GType identity_type = 0;
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if (!identity_type) {
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static const GTypeInfo identity_info = {
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sizeof(GstIdentityClass), NULL,
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NULL,
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(GClassInitFunc)gst_identity_class_init,
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NULL,
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NULL,
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sizeof(GstIdentity),
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0,
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(GInstanceInitFunc)gst_identity_init,
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};
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identity_type = g_type_register_static (GST_TYPE_ELEMENT, "GstIdentity", &identity_info, 0);
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}
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return identity_type;
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}
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static void
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gst_identity_class_init (GstIdentityClass *klass)
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{
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GObjectClass *gobject_class;
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gobject_class = (GObjectClass*)klass;
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parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOOP_BASED,
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g_param_spec_boolean ("loop_based", "loop_based", "loop_based",
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TRUE, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SLEEP_TIME,
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g_param_spec_uint ("sleep_time", "sleep_time", "sleep_time",
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0, G_MAXUINT, 0, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DUPLICATE,
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g_param_spec_uint ("duplicate", "duplicate", "duplicate",
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0, G_MAXUINT, 1, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SILENT,
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g_param_spec_boolean ("silent", "silent", "silent",
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TRUE,G_PARAM_READWRITE));
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gst_identity_signals[SIGNAL_HANDOFF] =
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g_signal_new ("handoff", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GstIdentityClass, handoff), NULL, NULL,
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g_cclosure_marshal_VOID__POINTER, G_TYPE_NONE, 1,
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G_TYPE_POINTER);
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gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_identity_set_property);
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gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_identity_get_property);
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}
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static GstBufferPool*
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gst_identity_get_bufferpool (GstPad *pad)
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{
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GstIdentity *identity;
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identity = GST_IDENTITY (gst_pad_get_parent (pad));
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return gst_pad_get_bufferpool (identity->srcpad);
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}
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static GstPadNegotiateReturn
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gst_identity_negotiate_src (GstPad *pad, GstCaps **caps, gpointer *data)
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{
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GstIdentity *identity;
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identity = GST_IDENTITY (gst_pad_get_parent (pad));
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return gst_pad_negotiate_proxy (pad, identity->sinkpad, caps);
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}
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static GstPadNegotiateReturn
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gst_identity_negotiate_sink (GstPad *pad, GstCaps **caps, gpointer *data)
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{
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GstIdentity *identity;
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identity = GST_IDENTITY (gst_pad_get_parent (pad));
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return gst_pad_negotiate_proxy (pad, identity->srcpad, caps);
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}
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static void
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gst_identity_init (GstIdentity *identity)
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{
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identity->sinkpad = gst_pad_new ("sink", GST_PAD_SINK);
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gst_element_add_pad (GST_ELEMENT (identity), identity->sinkpad);
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gst_pad_set_chain_function (identity->sinkpad, GST_DEBUG_FUNCPTR (gst_identity_chain));
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gst_pad_set_bufferpool_function (identity->sinkpad, gst_identity_get_bufferpool);
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gst_pad_set_negotiate_function (identity->sinkpad, gst_identity_negotiate_sink);
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identity->srcpad = gst_pad_new ("src", GST_PAD_SRC);
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gst_element_add_pad (GST_ELEMENT (identity), identity->srcpad);
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gst_pad_set_negotiate_function (identity->srcpad, gst_identity_negotiate_src);
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identity->loop_based = FALSE;
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identity->sleep_time = 0;
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identity->duplicate = 1;
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identity->silent = FALSE;
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}
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static void
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gst_identity_chain (GstPad *pad, GstBuffer *buf)
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{
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GstIdentity *identity;
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guint i;
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g_return_if_fail (pad != NULL);
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g_return_if_fail (GST_IS_PAD (pad));
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g_return_if_fail (buf != NULL);
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identity = GST_IDENTITY (gst_pad_get_parent (pad));
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for (i=identity->duplicate; i; i--) {
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if (!identity->silent)
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g_print("identity: chain ******* (%s:%s)i (%d bytes, %llu) \n",
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GST_DEBUG_PAD_NAME (identity->sinkpad), GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf));
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g_signal_emit (G_OBJECT (identity), gst_identity_signals[SIGNAL_HANDOFF], 0,
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buf);
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if (i>1)
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gst_buffer_ref (buf);
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gst_pad_push (identity->srcpad, buf);
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if (identity->sleep_time)
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usleep (identity->sleep_time);
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}
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}
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static void
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gst_identity_loop (GstElement *element)
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{
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GstIdentity *identity;
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GstBuffer *buf;
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guint i;
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g_return_if_fail (element != NULL);
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g_return_if_fail (GST_IS_IDENTITY (element));
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identity = GST_IDENTITY (element);
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do {
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buf = gst_pad_pull (identity->sinkpad);
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for (i=identity->duplicate; i; i--) {
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if (!identity->silent)
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g_print("identity: loop ******* (%s:%s)i (%d bytes, %llu) \n",
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GST_DEBUG_PAD_NAME (identity->sinkpad), GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf));
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g_signal_emit (G_OBJECT (identity), gst_identity_signals[SIGNAL_HANDOFF], 0,
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buf);
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if (i>1)
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gst_buffer_ref (buf);
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gst_pad_push (identity->srcpad, buf);
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if (identity->sleep_time)
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usleep (identity->sleep_time);
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}
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} while (!GST_ELEMENT_IS_COTHREAD_STOPPING(element));
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}
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static void
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gst_identity_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
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{
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GstIdentity *identity;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_IDENTITY (object));
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identity = GST_IDENTITY (object);
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switch (prop_id) {
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case ARG_LOOP_BASED:
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identity->loop_based = g_value_get_boolean (value);
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if (identity->loop_based) {
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gst_element_set_loop_function (GST_ELEMENT (identity), gst_identity_loop);
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gst_pad_set_chain_function (identity->sinkpad, NULL);
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}
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else {
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gst_pad_set_chain_function (identity->sinkpad, gst_identity_chain);
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gst_element_set_loop_function (GST_ELEMENT (identity), NULL);
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}
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break;
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case ARG_SLEEP_TIME:
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identity->sleep_time = g_value_get_uint (value);
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break;
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case ARG_SILENT:
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identity->silent = g_value_get_boolean (value);
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break;
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case ARG_DUPLICATE:
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identity->duplicate = g_value_get_uint (value);
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break;
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default:
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break;
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}
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}
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static void gst_identity_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) {
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GstIdentity *identity;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_IDENTITY (object));
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identity = GST_IDENTITY (object);
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switch (prop_id) {
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case ARG_LOOP_BASED:
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g_value_set_boolean (value, identity->loop_based);
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break;
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case ARG_SLEEP_TIME:
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g_value_set_uint (value, identity->sleep_time);
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break;
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case ARG_DUPLICATE:
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g_value_set_uint (value, identity->duplicate);
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break;
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case ARG_SILENT:
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g_value_set_boolean (value, identity->silent);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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