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capssetter: import element into -bad
This commit is contained in:
Mark Nauwelaerts
Tim-Philipp Müller
parent
5ae7119d11
commit
8217895170
2 changed files with 412 additions and 0 deletions
350
gst/debugutils/gstcapssetter.c
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350
gst/debugutils/gstcapssetter.c
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/* GStreamer Element
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* Copyright (C) 2006-2009 Mark Nauwelaerts <mnauw@users.sourceforge.net>
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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., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1307, USA.
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*/
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/**
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* SECTION:element-capssetter
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*
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* <refsect2>
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* <para>
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* Sets or merges caps on a stream's buffers.
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* That is, a buffer's caps are updated using (fields of)
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* <link linkend="GstCapsSetter--caps">caps</link>. Note that this may
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* contain multiple structures (though not likely recommended), but each
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* of these must be fixed (or will otherwise be rejected).
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* </para>
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* <para>
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* If <link linkend="GstCapsSetter--join">join</link>
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* is TRUE, then the incoming caps' mime-type is compared to the mime-type(s)
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* of provided caps and only matching structure(s) are considered for updating.
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* </para>
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* <para>
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* If <link linkend="GstCapsSetter--replace">replace</link>
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* is TRUE, then any caps update is preceded by clearing existing fields,
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* making provided fields (as a whole) replace incoming ones.
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* Otherwise, no clearing is performed, in which case provided fields are
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* added/merged onto incoming caps
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* </para>
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* <para>
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* Although this element might mainly serve as debug helper,
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* it can also practically be used to correct a faulty pixel-aspect-ratio,
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* or to modify a yuv fourcc value to effectively swap chroma components or such
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* alike.
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* </para>
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* </refsect2>
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*
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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 "gstcapssetter.h"
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#include <string.h>
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GST_DEBUG_CATEGORY_STATIC (caps_setter_debug);
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#define GST_CAT_DEFAULT caps_setter_debug
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/* signals and args */
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enum
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{
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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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{
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PROP_0,
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PROP_CAPS,
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PROP_JOIN,
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PROP_REPLACE
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/* FILL ME */
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};
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#define DEFAULT_JOIN TRUE
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#define DEFAULT_REPLACE FALSE
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static GstElementDetails caps_setter_details =
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GST_ELEMENT_DETAILS ("CapsSetter",
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"Generic",
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"Set/merge caps on stream",
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"Mark Nauwelaerts <mnauw@users.sourceforge.net>");
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static GstStaticPadTemplate gst_caps_setter_src_template =
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GST_STATIC_PAD_TEMPLATE (GST_BASE_TRANSFORM_SRC_NAME,
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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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static GstStaticPadTemplate gst_caps_setter_sink_template =
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GST_STATIC_PAD_TEMPLATE (GST_BASE_TRANSFORM_SINK_NAME,
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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 gboolean gst_caps_setter_transform_size (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps, guint size,
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GstCaps * othercaps, guint * othersize);
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static GstCaps *gst_caps_setter_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps);
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static GstFlowReturn gst_caps_setter_transform_ip (GstBaseTransform * btrans,
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GstBuffer * in);
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static void gst_caps_setter_finalize (GObject * object);
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static void gst_caps_setter_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_caps_setter_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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GST_BOILERPLATE (GstCapsSetter, gst_caps_setter, GstBaseTransform,
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GST_TYPE_BASE_TRANSFORM);
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static void
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gst_caps_setter_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_set_details (element_class, &caps_setter_details);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_caps_setter_sink_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_caps_setter_src_template));
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}
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static void
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gst_caps_setter_class_init (GstCapsSetterClass * g_class)
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{
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GObjectClass *gobject_class;
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GstBaseTransformClass *trans_class;
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gobject_class = G_OBJECT_CLASS (g_class);
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trans_class = GST_BASE_TRANSFORM_CLASS (g_class);
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GST_DEBUG_CATEGORY_INIT (caps_setter_debug, "capssetter", 0, "capssetter");
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gobject_class->set_property = gst_caps_setter_set_property;
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gobject_class->get_property = gst_caps_setter_get_property;
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gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_caps_setter_finalize);
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g_object_class_install_property (gobject_class, PROP_CAPS,
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g_param_spec_boxed ("caps", "Merge caps",
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"Merge these caps (thereby overwriting) in the stream",
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GST_TYPE_CAPS, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_JOIN,
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g_param_spec_boolean ("join", "Join",
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"Match incoming caps' mime-type to mime-type of provided caps",
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DEFAULT_JOIN, G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class, PROP_REPLACE,
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g_param_spec_boolean ("replace", "Replace",
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"Drop fields of incoming caps", DEFAULT_REPLACE, G_PARAM_READWRITE));
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trans_class->transform_size =
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GST_DEBUG_FUNCPTR (gst_caps_setter_transform_size);
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trans_class->transform_caps =
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GST_DEBUG_FUNCPTR (gst_caps_setter_transform_caps);
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/* dummy seems needed */
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trans_class->transform_ip = GST_DEBUG_FUNCPTR (gst_caps_setter_transform_ip);
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}
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static void
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gst_caps_setter_init (GstCapsSetter * filter, GstCapsSetterClass * g_class)
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{
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filter->caps = gst_caps_new_any ();
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filter->join = DEFAULT_JOIN;
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filter->replace = DEFAULT_REPLACE;
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}
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static void
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gst_caps_setter_finalize (GObject * object)
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{
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GstCapsSetter *filter = GST_CAPS_SETTER (object);
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gst_caps_replace (&filter->caps, NULL);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gboolean
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gst_caps_setter_transform_size (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps, guint size,
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GstCaps * othercaps, guint * othersize)
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{
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*othersize = size;
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return TRUE;
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}
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static GstCaps *
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gst_caps_setter_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps)
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{
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GstCapsSetter *filter;
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GstCaps *ret, *filter_caps;
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GstStructure *structure, *merge;
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const gchar *name;
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gint i, j;
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filter = GST_CAPS_SETTER (trans);
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GST_DEBUG_OBJECT (trans, "receiving caps: %" GST_PTR_FORMAT, caps);
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ret = gst_caps_copy (caps);
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/* this function is always called with a simple caps */
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if (!GST_CAPS_IS_SIMPLE (ret) || direction != GST_PAD_SINK)
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return ret;
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structure = gst_caps_get_structure (ret, 0);
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name = gst_structure_get_name (structure);
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GST_OBJECT_LOCK (filter);
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filter_caps = gst_caps_ref (filter->caps);
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GST_OBJECT_UNLOCK (filter);
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for (i = 0; i < gst_caps_get_size (filter_caps); ++i) {
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merge = gst_caps_get_structure (filter_caps, i);
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if (gst_structure_has_name (merge, name) || !filter->join) {
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if (!filter->join)
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gst_structure_set_name (structure, gst_structure_get_name (merge));
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if (filter->replace)
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gst_structure_remove_all_fields (structure);
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for (j = 0; j < gst_structure_n_fields (merge); ++j) {
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const gchar *fname;
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fname = gst_structure_nth_field_name (merge, j);
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gst_structure_set_value (structure, fname,
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gst_structure_get_value (merge, fname));
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}
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}
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}
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GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, ret);
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gst_caps_unref (filter_caps);
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return ret;
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}
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static GstFlowReturn
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gst_caps_setter_transform_ip (GstBaseTransform * btrans, GstBuffer * in)
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{
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return GST_FLOW_OK;
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}
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static gboolean
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gst_caps_is_fixed_foreach (GQuark field_id, const GValue * value,
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gpointer unused)
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{
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return gst_value_is_fixed (value);
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}
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static void
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gst_caps_setter_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstCapsSetter *filter;
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g_return_if_fail (GST_IS_CAPS_SETTER (object));
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filter = GST_CAPS_SETTER (object);
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switch (prop_id) {
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case PROP_CAPS:{
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GstCaps *new_caps;
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const GstCaps *new_caps_val = gst_value_get_caps (value);
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gint i;
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if (new_caps_val == NULL) {
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new_caps = gst_caps_new_any ();
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} else {
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new_caps = gst_caps_copy (new_caps_val);
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}
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for (i = 0; new_caps && (i < gst_caps_get_size (new_caps)); ++i) {
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GstStructure *s;
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s = gst_caps_get_structure (new_caps, i);
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if (!gst_structure_foreach (s, gst_caps_is_fixed_foreach, NULL)) {
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GST_ERROR_OBJECT (filter, "rejected unfixed caps: %" GST_PTR_FORMAT,
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new_caps);
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gst_caps_unref (new_caps);
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new_caps = NULL;
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break;
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}
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}
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if (new_caps) {
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GST_OBJECT_LOCK (filter);
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gst_caps_replace (&filter->caps, new_caps);
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/* drop extra ref */
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gst_caps_unref (new_caps);
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GST_OBJECT_UNLOCK (filter);
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GST_DEBUG_OBJECT (filter, "set new caps %" GST_PTR_FORMAT, new_caps);
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}
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/* try to activate these new caps next time around */
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gst_base_transform_reconfigure (GST_BASE_TRANSFORM (filter));
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break;
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}
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case PROP_JOIN:
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filter->join = g_value_get_boolean (value);
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break;
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case PROP_REPLACE:
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filter->replace = g_value_get_boolean (value);
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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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static void
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gst_caps_setter_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstCapsSetter *filter;
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g_return_if_fail (GST_IS_CAPS_SETTER (object));
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filter = GST_CAPS_SETTER (object);
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switch (prop_id) {
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case PROP_CAPS:
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gst_value_set_caps (value, filter->caps);
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break;
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case PROP_JOIN:
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g_value_set_boolean (value, filter->join);
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break;
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case PROP_REPLACE:
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g_value_set_boolean (value, filter->replace);
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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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62
gst/debugutils/gstcapssetter.h
Normal file
62
gst/debugutils/gstcapssetter.h
Normal file
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@ -0,0 +1,62 @@
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/* GStreamer Element
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* Copyright (C) 2006-2009 Mark Nauwelaerts <mnauw@users.sourceforge.net>
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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
|
||||||
|
* Library General Public License for more details.
|
||||||
|
*
|
||||||
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* You should have received a copy of the GNU Library General Public
|
||||||
|
* License along with this library; if not, write to the
|
||||||
|
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
||||||
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* Boston, MA 02110-1307, USA.
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*/
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||||||
|
|
||||||
|
#ifndef __GST_CAPS_SETTER_H__
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|
#define __GST_CAPS_SETTER_H__
|
||||||
|
|
||||||
|
#include <gst/base/gstbasetransform.h>
|
||||||
|
|
||||||
|
G_BEGIN_DECLS
|
||||||
|
|
||||||
|
#define GST_TYPE_CAPS_SETTER \
|
||||||
|
(gst_caps_setter_get_type())
|
||||||
|
#define GST_CAPS_SETTER(obj) \
|
||||||
|
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CAPS_SETTER,GstCapsSetter))
|
||||||
|
#define GST_CAPS_SETTER_CLASS(klass) \
|
||||||
|
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CAPS_SETTER,GstCapsSetterClass))
|
||||||
|
#define GST_IS_CAPS_SETTER(obj) \
|
||||||
|
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CAPS_SETTER))
|
||||||
|
#define GST_IS_CAPS_SETTER_CLASS(klass) \
|
||||||
|
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CAPS_SETTER))
|
||||||
|
|
||||||
|
GType gst_caps_setter_get_type (void);
|
||||||
|
|
||||||
|
typedef struct _GstCapsSetter GstCapsSetter;
|
||||||
|
typedef struct _GstCapsSetterClass GstCapsSetterClass;
|
||||||
|
|
||||||
|
struct _GstCapsSetter
|
||||||
|
{
|
||||||
|
GstBaseTransform parent;
|
||||||
|
|
||||||
|
/* properties */
|
||||||
|
GstCaps *caps;
|
||||||
|
gboolean join;
|
||||||
|
gboolean replace;
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
struct _GstCapsSetterClass
|
||||||
|
{
|
||||||
|
GstBaseTransformClass parent_class;
|
||||||
|
};
|
||||||
|
|
||||||
|
G_END_DECLS
|
||||||
|
|
||||||
|
#endif /* __GST_CAPS_SETTER_H__ */
|
||||||
Loading…
Reference in a new issue