mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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31d748d332
Original commit message from CVS: s/GstBuffer/GstData/ in the API where you can pass events. Fix the plugins to deal with that. Fixes #113488. Also includes scheduler patches, and probably fixes some queue bugs relating to events and buffers.
412 lines
13 KiB
C
412 lines
13 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 <stdlib.h>
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "gstidentity.h"
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GST_DEBUG_CATEGORY (gst_identity_debug);
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#define GST_CAT_DEFAULT gst_identity_debug
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GstElementDetails gst_identity_details = {
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"Identity",
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"Generic",
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"LGPL",
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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_ERROR_AFTER,
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ARG_DROP_PROBABILITY,
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ARG_SILENT,
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ARG_LAST_MESSAGE,
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ARG_DUMP,
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ARG_DELAY_CAPSNEGO,
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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, GstData *_data);
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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",
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"Set to TRUE to use loop-based rather than chain-based scheduling",
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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", "Microseconds to sleep between processing",
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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 Buffers", "Push the buffers N times",
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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_ERROR_AFTER,
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g_param_spec_int ("error_after", "Error After", "Error after N buffers",
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G_MININT, G_MAXINT, -1, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DROP_PROBABILITY,
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g_param_spec_float ("drop_probability", "Drop Probability", "The Probability a buffer is dropped",
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0.0, 1.0, 0.0, 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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FALSE, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LAST_MESSAGE,
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g_param_spec_string ("last-message", "last-message", "last-message",
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NULL, G_PARAM_READABLE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DUMP,
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g_param_spec_boolean("dump", "Dump", "Dump buffer contents",
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FALSE, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DELAY_CAPSNEGO,
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g_param_spec_boolean("delay_capsnego", "Delay Caps Nego", "Delay capsnegotiation to loop/chain function",
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FALSE, 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 GstCaps*
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gst_identity_getcaps (GstPad *pad, GstCaps *caps)
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{
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GstIdentity *identity;
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GstPad *otherpad;
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identity = GST_IDENTITY (gst_pad_get_parent (pad));
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if (identity->delay_capsnego) {
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return NULL;
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}
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otherpad = (pad == identity->srcpad ? identity->sinkpad : identity->srcpad);
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return gst_pad_get_allowed_caps (otherpad);
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}
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static GstPadLinkReturn
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gst_identity_link (GstPad *pad, GstCaps *caps)
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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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if (GST_CAPS_IS_FIXED (caps)) {
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if (identity->delay_capsnego && GST_PAD_IS_SINK (pad)) {
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identity->srccaps = gst_caps_ref (caps);
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return GST_PAD_LINK_OK;
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}
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else {
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GstPad *otherpad;
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otherpad = (pad == identity->srcpad ? identity->sinkpad : identity->srcpad);
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return gst_pad_try_set_caps (otherpad, caps);
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}
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}
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else
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return GST_PAD_LINK_DELAYED;
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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_link_function (identity->sinkpad, gst_identity_link);
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gst_pad_set_getcaps_function (identity->sinkpad, gst_identity_getcaps);
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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_link_function (identity->srcpad, gst_identity_link);
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gst_pad_set_getcaps_function (identity->srcpad, gst_identity_getcaps);
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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->error_after = -1;
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identity->drop_probability = 0.0;
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identity->silent = FALSE;
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identity->dump = FALSE;
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identity->last_message = NULL;
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identity->delay_capsnego = FALSE;
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identity->srccaps = NULL;
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}
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static void
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gst_identity_chain (GstPad *pad, GstData *_data)
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{
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GstBuffer *buf = GST_BUFFER (_data);
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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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if (identity->delay_capsnego && identity->srccaps) {
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if (gst_pad_try_set_caps (identity->srcpad, identity->srccaps) <= 0) {
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if (!gst_pad_recover_caps_error (identity->srcpad, identity->srccaps)) {
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gst_buffer_unref (buf);
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return;
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}
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}
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identity->srccaps = NULL;
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}
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if (identity->error_after >= 0) {
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identity->error_after--;
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if (identity->error_after == 0) {
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gst_buffer_unref (buf);
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gst_element_error (GST_ELEMENT (identity), "errored after iterations as requested");
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return;
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}
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}
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if (identity->drop_probability > 0.0) {
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if ((gfloat)(1.0*rand()/(RAND_MAX)) < identity->drop_probability) {
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if (identity->last_message != NULL) {
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g_free (identity->last_message);
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}
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identity->last_message = g_strdup_printf ("dropping ******* (%s:%s)i (%d bytes, %"
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G_GINT64_FORMAT ")",
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GST_DEBUG_PAD_NAME (identity->sinkpad), GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf));
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g_object_notify (G_OBJECT (identity), "last-message");
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gst_buffer_unref (buf);
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return;
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}
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}
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if (identity->dump) {
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gst_util_dump_mem (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
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}
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for (i = identity->duplicate; i; i--) {
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if (!identity->silent) {
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g_free (identity->last_message);
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identity->last_message = g_strdup_printf ("chain ******* (%s:%s)i (%d bytes, %"
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G_GINT64_FORMAT ")",
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GST_DEBUG_PAD_NAME (identity->sinkpad), GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf));
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g_object_notify (G_OBJECT (identity), "last-message");
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}
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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, GST_DATA (buf));
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if (identity->sleep_time)
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g_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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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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buf = GST_BUFFER (gst_pad_pull (identity->sinkpad));
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if (GST_IS_EVENT (buf)) {
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GstEvent *event = GST_EVENT (buf);
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if (GST_EVENT_IS_INTERRUPT (event)) {
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gst_event_unref (event);
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}
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else {
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gst_pad_event_default (identity->sinkpad, event);
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}
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}
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else {
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gst_identity_chain (identity->sinkpad, GST_DATA (buf));
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}
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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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case ARG_DUMP:
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identity->dump = g_value_get_boolean (value);
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break;
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case ARG_DELAY_CAPSNEGO:
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identity->delay_capsnego = g_value_get_boolean (value);
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break;
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case ARG_ERROR_AFTER:
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identity->error_after = g_value_get_int (value);
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break;
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case ARG_DROP_PROBABILITY:
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identity->drop_probability = g_value_get_float (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_ERROR_AFTER:
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g_value_set_int (value, identity->error_after);
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break;
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case ARG_DROP_PROBABILITY:
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g_value_set_float (value, identity->drop_probability);
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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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case ARG_DUMP:
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g_value_set_boolean (value, identity->dump);
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break;
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case ARG_DELAY_CAPSNEGO:
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g_value_set_boolean (value, identity->delay_capsnego);
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break;
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case ARG_LAST_MESSAGE:
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g_value_set_string (value, identity->last_message);
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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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