mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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320 lines
8.6 KiB
C
320 lines
8.6 KiB
C
/* GStreamer
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* Copyright (C) 2010 David Schleef <ds@schleef.org>
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/gst.h>
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#include "gstcapsdebug.h"
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GST_DEBUG_CATEGORY_STATIC (gst_caps_debug_debug);
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#define GST_CAT_DEFAULT gst_caps_debug_debug
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/* prototypes */
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static void gst_caps_debug_set_property (GObject * object,
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guint property_id, const GValue * value, GParamSpec * pspec);
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static void gst_caps_debug_get_property (GObject * object,
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guint property_id, GValue * value, GParamSpec * pspec);
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static void gst_caps_debug_dispose (GObject * object);
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static void gst_caps_debug_finalize (GObject * object);
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static GstFlowReturn gst_caps_debug_sink_chain (GstPad * pad,
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GstBuffer * buffer);
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static GstCaps *gst_caps_debug_getcaps (GstPad * pad);
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static gboolean gst_caps_debug_acceptcaps (GstPad * pad, GstCaps * caps);
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static GstFlowReturn gst_caps_debug_bufferalloc (GstPad * pad,
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guint64 offset, guint size, GstCaps * caps, GstBuffer ** buf);
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static GstStateChangeReturn
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gst_caps_debug_change_state (GstElement * element, GstStateChange transition);
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enum
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{
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PROP_0
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};
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/* pad templates */
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static GstStaticPadTemplate gst_caps_debug_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate gst_caps_debug_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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/* class initialization */
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#define DEBUG_INIT(bla) \
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GST_DEBUG_CATEGORY_INIT (gst_caps_debug_debug, "capsdebug", 0, \
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"debug category for capsdebug element");
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GST_BOILERPLATE_FULL (GstCapsDebug, gst_caps_debug, GstElement,
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GST_TYPE_ELEMENT, DEBUG_INIT);
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static void
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gst_caps_debug_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_caps_debug_src_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_caps_debug_sink_template));
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gst_element_class_set_details_simple (element_class, "Caps debug",
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"Generic", "Debug caps negotiation", "David Schleef <ds@schleef.org>");
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}
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static void
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gst_caps_debug_class_init (GstCapsDebugClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gobject_class->set_property = gst_caps_debug_set_property;
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gobject_class->get_property = gst_caps_debug_get_property;
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gobject_class->dispose = gst_caps_debug_dispose;
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gobject_class->finalize = gst_caps_debug_finalize;
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element_class->change_state = GST_DEBUG_FUNCPTR (gst_caps_debug_change_state);
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}
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static void
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gst_caps_debug_init (GstCapsDebug * capsdebug,
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GstCapsDebugClass * capsdebug_class)
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{
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capsdebug->srcpad =
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gst_pad_new_from_static_template (&gst_caps_debug_src_template, "src");
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gst_pad_set_getcaps_function (capsdebug->srcpad,
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GST_DEBUG_FUNCPTR (gst_caps_debug_getcaps));
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gst_pad_set_acceptcaps_function (capsdebug->srcpad,
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GST_DEBUG_FUNCPTR (gst_caps_debug_acceptcaps));
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gst_element_add_pad (GST_ELEMENT (capsdebug), capsdebug->srcpad);
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capsdebug->sinkpad =
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gst_pad_new_from_static_template (&gst_caps_debug_sink_template, "sink");
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gst_pad_set_chain_function (capsdebug->sinkpad,
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GST_DEBUG_FUNCPTR (gst_caps_debug_sink_chain));
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gst_pad_set_bufferalloc_function (capsdebug->sinkpad,
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GST_DEBUG_FUNCPTR (gst_caps_debug_bufferalloc));
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gst_pad_set_getcaps_function (capsdebug->sinkpad,
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GST_DEBUG_FUNCPTR (gst_caps_debug_getcaps));
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gst_pad_set_acceptcaps_function (capsdebug->sinkpad,
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GST_DEBUG_FUNCPTR (gst_caps_debug_acceptcaps));
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gst_element_add_pad (GST_ELEMENT (capsdebug), capsdebug->sinkpad);
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}
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void
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gst_caps_debug_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstCapsDebug *capsdebug;
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g_return_if_fail (GST_IS_CAPS_DEBUG (object));
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capsdebug = GST_CAPS_DEBUG (object);
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switch (property_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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void
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gst_caps_debug_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GstCapsDebug *capsdebug;
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g_return_if_fail (GST_IS_CAPS_DEBUG (object));
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capsdebug = GST_CAPS_DEBUG (object);
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switch (property_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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void
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gst_caps_debug_dispose (GObject * object)
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{
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GstCapsDebug *capsdebug;
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g_return_if_fail (GST_IS_CAPS_DEBUG (object));
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capsdebug = GST_CAPS_DEBUG (object);
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/* clean up as possible. may be called multiple times */
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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void
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gst_caps_debug_finalize (GObject * object)
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{
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GstCapsDebug *capsdebug;
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g_return_if_fail (GST_IS_CAPS_DEBUG (object));
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capsdebug = GST_CAPS_DEBUG (object);
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/* clean up object here */
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static GstStateChangeReturn
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gst_caps_debug_change_state (GstElement * element, GstStateChange transition)
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{
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GstStateChangeReturn ret;
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ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
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return GST_STATE_CHANGE_SUCCESS;
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}
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static GstFlowReturn
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gst_caps_debug_sink_chain (GstPad * pad, GstBuffer * buffer)
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{
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GstFlowReturn ret;
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GstCapsDebug *capsdebug;
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capsdebug = GST_CAPS_DEBUG (gst_pad_get_parent (pad));
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ret = gst_pad_push (capsdebug->srcpad, buffer);
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gst_object_unref (capsdebug);
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return ret;
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}
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#define THISPAD ((pad == capsdebug->srcpad) ? "downstream" : "upstream")
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#define OTHERPAD ((pad == capsdebug->srcpad) ? "upstream" : "downstream")
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static GstCaps *
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gst_caps_debug_getcaps (GstPad * pad)
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{
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GstCaps *caps;
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GstCapsDebug *capsdebug;
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gchar *s;
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GstPad *otherpad;
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capsdebug = GST_CAPS_DEBUG (gst_pad_get_parent (pad));
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otherpad =
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(pad == capsdebug->srcpad) ? capsdebug->sinkpad : capsdebug->srcpad;
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GST_INFO ("%s called getcaps", THISPAD);
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caps = gst_pad_peer_get_caps (otherpad);
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s = gst_caps_to_string (caps);
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GST_INFO ("%s returned %s", OTHERPAD, s);
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g_free (s);
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if (caps == NULL)
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caps = gst_caps_new_any ();
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gst_object_unref (capsdebug);
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return caps;
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}
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static gboolean
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gst_caps_debug_acceptcaps (GstPad * pad, GstCaps * caps)
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{
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GstCapsDebug *capsdebug;
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gchar *s;
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gboolean ret;
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GstPad *otherpad;
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capsdebug = GST_CAPS_DEBUG (gst_pad_get_parent (pad));
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otherpad =
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(pad == capsdebug->srcpad) ? capsdebug->sinkpad : capsdebug->srcpad;
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s = gst_caps_to_string (caps);
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GST_INFO ("%s called acceptcaps with %s", THISPAD, s);
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g_free (s);
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ret = gst_pad_peer_accept_caps (otherpad, caps);
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GST_INFO ("%s returned %s", OTHERPAD, ret ? "TRUE" : "FALSE");
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gst_object_unref (capsdebug);
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return ret;
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}
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static GstFlowReturn
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gst_caps_debug_bufferalloc (GstPad * pad, guint64 offset, guint size,
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GstCaps * caps, GstBuffer ** buf)
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{
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GstCapsDebug *capsdebug;
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gchar *s;
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gchar *t;
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GstFlowReturn ret;
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GstPad *otherpad;
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gboolean newcaps;
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capsdebug = GST_CAPS_DEBUG (gst_pad_get_parent (pad));
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otherpad =
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(pad == capsdebug->srcpad) ? capsdebug->sinkpad : capsdebug->srcpad;
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newcaps = (caps != GST_PAD_CAPS (pad));
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if (newcaps) {
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s = gst_caps_to_string (caps);
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GST_INFO ("%s called bufferalloc with new caps, offset=%" G_GUINT64_FORMAT
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" size=%d caps=%s", THISPAD, offset, size, s);
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g_free (s);
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}
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ret = gst_pad_alloc_buffer_and_set_caps (otherpad, offset, size, caps, buf);
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if (newcaps) {
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GST_INFO ("%s returned %s", OTHERPAD, gst_flow_get_name (ret));
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}
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if (caps != GST_BUFFER_CAPS (*buf)) {
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s = gst_caps_to_string (caps);
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t = gst_caps_to_string (GST_BUFFER_CAPS (*buf));
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GST_INFO
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("%s returned from bufferalloc with different caps, requested=%s returned=%s",
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OTHERPAD, s, t);
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g_free (s);
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g_free (t);
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}
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gst_object_unref (capsdebug);
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return ret;
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}
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