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33c2f5fb01
and fix its warnings
581 lines
15 KiB
C
581 lines
15 KiB
C
/*
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* GStreamer
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* Copyright 2007 Edgard Lima <edgard.lima@indt.org.br>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Alternatively, the contents of this file may be used under the
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* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
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* which case the following provisions apply instead of the ones
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* mentioned above:
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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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/**
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* SECTION: element-metadatamux
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*
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* <refsect2>
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* <para>
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* This element writes tags into metadata (EXIF, IPTC and XMP) chunks, and
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* writes the chunks into image files (JPEG, PNG). Tags the are received as
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* GST_EVENT_TAG event or set by the application using #GstTagSetter interface.
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* </para>
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* <title>Example launch line</title>
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* <para>
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* <programlisting>
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* gst-launch -v -m filesrc location=orig.jpeg ! metadatamux ! filesink
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* location=dest.jpeg
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* </programlisting>
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* <programlisting>
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* gst-launch -v -m filesrc location=orig.png ! metadatademux ! pngdec !
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* ffmpegcolorspace ! jpegenc ! metadatamux ! filesink location=dest.jpeg
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* </programlisting>
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* </para>
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* <title>How it works</title>
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* <para>
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* If this element receives a GST_TAG_EXIF, GST_TAG_IPTC or GST_TAG_XMP which
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* are whole chunk metadata tags, then this whole chunk will be modified by
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* individual tags received and written to the file. Otherwise, a new chunk
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* will be created from the scratch and then modified in same way.
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* </para>
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* </refsect2>
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*/
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/*
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* includes
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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 "gstmetadatamux.h"
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#include "metadataiptc.h"
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#include "metadataxmp.h"
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#include <string.h>
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/*
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* enum and types
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*/
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enum
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{
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LAST_SIGNAL
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};
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enum
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{
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ARG_0,
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ARG_EXIF_BYTE_ORDER,
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};
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/*
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* defines and static global vars
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*/
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GST_DEBUG_CATEGORY (gst_metadata_mux_debug);
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#define GST_CAT_DEFAULT gst_metadata_mux_debug
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#define GOTO_DONE_IF_NULL(ptr) \
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do { if ( NULL == (ptr) ) goto done; } while(FALSE)
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#define GOTO_DONE_IF_NULL_AND_FAIL(ptr, ret) \
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do { if ( NULL == (ptr) ) { (ret) = FALSE; goto done; } } while(FALSE)
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#define DEFAULT_EXIF_BYTE_ORDER GST_META_EXIF_BYTE_ORDER_MOTOROLA
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static GstStaticPadTemplate sink_factory = 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 ("image/jpeg, tags-extracted = (bool) true;"
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"image/png, tags-extracted = (bool) true")
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);
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static GstStaticPadTemplate src_factory = 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 ("image/jpeg; " "image/png")
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);
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static GstMetadataMuxClass *metadata_parent_class = NULL;
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/*
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* static helper functions declaration
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*/
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static gboolean gst_metadata_mux_configure_srccaps (GstMetadataMux * filter);
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/*
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* GObject callback functions declaration
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*/
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static void gst_metadata_mux_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_metadata_mux_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstStateChangeReturn gst_metadata_mux_change_state (GstElement * element,
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GstStateChange transition);
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/*
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* GstBaseMetadata virtual functions declaration
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*/
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static void gst_metadata_mux_create_chunks_from_tags (GstBaseMetadata * base);
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static gboolean gst_metadata_mux_set_caps (GstPad * pad, GstCaps * caps);
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static GstCaps *gst_metadata_mux_get_caps (GstPad * pad);
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static gboolean gst_metadata_mux_sink_event (GstPad * pad, GstEvent * event);
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/*
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* GST BOILERPLATE
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*/
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static void
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gst_metadata_mux_add_interfaces (GType type)
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{
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static const GInterfaceInfo tag_setter_info = { NULL, NULL, NULL };
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g_type_add_interface_static (type, GST_TYPE_TAG_SETTER, &tag_setter_info);
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}
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GST_BOILERPLATE_FULL (GstMetadataMux, gst_metadata_mux, GstBaseMetadata,
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GST_TYPE_BASE_METADATA, gst_metadata_mux_add_interfaces);
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/*
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* static helper functions implementation
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*/
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static gboolean
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gst_metadata_mux_configure_srccaps (GstMetadataMux * filter)
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{
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GstCaps *caps = NULL;
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gboolean ret = FALSE;
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const gchar *mime = NULL;
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switch (GST_BASE_METADATA_IMG_TYPE (filter)) {
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case IMG_JPEG:
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mime = "image/jpeg";
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break;
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case IMG_PNG:
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mime = "image/png";
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break;
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default:
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ret = FALSE;
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goto done;
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break;
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}
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caps = gst_caps_new_simple (mime, NULL);
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ret = gst_pad_set_caps (GST_BASE_METADATA_SRC_PAD (filter), caps);
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done:
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if (caps) {
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gst_caps_unref (caps);
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caps = NULL;
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}
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return ret;
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}
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/*
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* GObject callback functions declaration
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*/
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static void
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gst_metadata_mux_base_init (gpointer gclass)
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{
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/* *INDENT-ON* */
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GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&src_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_factory));
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gst_element_class_set_details_simple (element_class, "Metadata muxer",
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"Muxer/Formatter/Metadata",
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"Write metadata (EXIF, IPTC and XMP) into a image stream",
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"Edgard Lima <edgard.lima@indt.org.br>");
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}
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static void
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gst_metadata_mux_class_init (GstMetadataMuxClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstBaseMetadataClass *gstbasemetadata_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstbasemetadata_class = (GstBaseMetadataClass *) klass;
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metadata_parent_class = g_type_class_peek_parent (klass);
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gobject_class->set_property = gst_metadata_mux_set_property;
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gobject_class->get_property = gst_metadata_mux_get_property;
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gstelement_class->change_state =
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GST_DEBUG_FUNCPTR (gst_metadata_mux_change_state);
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gstbasemetadata_class->processing =
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GST_DEBUG_FUNCPTR (gst_metadata_mux_create_chunks_from_tags);
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gstbasemetadata_class->set_caps =
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GST_DEBUG_FUNCPTR (gst_metadata_mux_set_caps);
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gstbasemetadata_class->get_sink_caps =
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GST_DEBUG_FUNCPTR (gst_metadata_mux_get_caps);
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gstbasemetadata_class->get_src_caps =
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GST_DEBUG_FUNCPTR (gst_metadata_mux_get_caps);
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gstbasemetadata_class->sink_event =
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GST_DEBUG_FUNCPTR (gst_metadata_mux_sink_event);
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/**
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* GstMetadataMux:exif-byte-order:
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*
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* Set byte-order for exif metadata writing.
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*
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* Since: 0.10.11
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*/
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g_object_class_install_property (gobject_class, ARG_EXIF_BYTE_ORDER,
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g_param_spec_enum ("exif-byte-order", "Exif byte-order",
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"Byte-order for exif metadata writing", GST_TYPE_META_EXIF_BYTE_ORDER,
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DEFAULT_EXIF_BYTE_ORDER, G_PARAM_READWRITE));
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}
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static void
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gst_metadata_mux_init (GstMetadataMux * filter, GstMetadataMuxClass * gclass)
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{
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gst_base_metadata_set_option_flag (GST_BASE_METADATA (filter),
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META_OPT_EXIF | META_OPT_IPTC | META_OPT_XMP | META_OPT_MUX);
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filter->exif_options.byteorder = DEFAULT_EXIF_BYTE_ORDER;
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}
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static void
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gst_metadata_mux_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstMetadataMux *filter = GST_METADATA_MUX (object);
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switch (prop_id) {
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case ARG_EXIF_BYTE_ORDER:
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filter->exif_options.byteorder = g_value_get_enum (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_metadata_mux_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstMetadataMux *filter = GST_METADATA_MUX (object);
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switch (prop_id) {
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case ARG_EXIF_BYTE_ORDER:
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g_value_set_enum (value, filter->exif_options.byteorder);
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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 GstStateChangeReturn
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gst_metadata_mux_change_state (GstElement * element, GstStateChange transition)
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{
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GstStateChangeReturn ret;
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GstMetadataMux *filter = GST_METADATA_MUX (element);
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switch (transition) {
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case GST_STATE_CHANGE_NULL_TO_READY:
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break;
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case GST_STATE_CHANGE_READY_TO_PAUSED:
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break;
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case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
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break;
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default:
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break;
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}
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ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
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switch (transition) {
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case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
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break;
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case GST_STATE_CHANGE_PAUSED_TO_READY:
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gst_tag_setter_reset_tags (GST_TAG_SETTER (filter));
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break;
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case GST_STATE_CHANGE_READY_TO_NULL:
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break;
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default:
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break;
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}
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return ret;
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}
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/*
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* GstBaseMetadata virtual functions implementation
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*/
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/*
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* gst_metadata_mux_create_chunks_from_tags:
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* @base: the base metadata instance
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*
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* This function creates new metadata (EXIF, IPTC, XMP) chunks with the tags
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* received and add it to the list of segments that will be injected to the
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* resulting file by #GstBaseMetadata.
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*
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* Returns: nothing
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*
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*/
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static void
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gst_metadata_mux_create_chunks_from_tags (GstBaseMetadata * base)
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{
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GstMetadataMux *filter = GST_METADATA_MUX (base);
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GstTagSetter *setter = GST_TAG_SETTER (filter);
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const GstTagList *taglist = gst_tag_setter_get_tag_list (setter);
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GST_DEBUG_OBJECT (base, "Creating chunks from tags..");
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if (taglist) {
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guint8 *buf = NULL;
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guint32 size = 0;
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if (gst_base_metadata_get_option_flag (base) & META_OPT_EXIF) {
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GST_DEBUG_OBJECT (base, "Using EXIF");
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metadatamux_exif_create_chunk_from_tag_list (&buf, &size, taglist,
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&filter->exif_options);
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gst_base_metadata_update_inject_segment_with_new_data (base, &buf, &size,
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MD_CHUNK_EXIF);
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g_free (buf);
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buf = NULL;
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size = 0;
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}
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if (gst_base_metadata_get_option_flag (base) & META_OPT_IPTC) {
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GST_DEBUG_OBJECT (base, "Using IPTC");
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metadatamux_iptc_create_chunk_from_tag_list (&buf, &size, taglist);
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gst_base_metadata_update_inject_segment_with_new_data (base, &buf, &size,
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MD_CHUNK_IPTC);
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g_free (buf);
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buf = NULL;
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size = 0;
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}
|
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if (gst_base_metadata_get_option_flag (base) & META_OPT_XMP) {
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GST_DEBUG_OBJECT (base, "Using XMP");
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metadatamux_xmp_create_chunk_from_tag_list (&buf, &size, taglist);
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gst_base_metadata_update_inject_segment_with_new_data (base, &buf, &size,
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MD_CHUNK_XMP);
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g_free (buf);
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}
|
|
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} else {
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GST_DEBUG_OBJECT (base, "Empty taglist");
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}
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}
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static gboolean
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gst_metadata_mux_set_caps (GstPad * pad, GstCaps * caps)
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{
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GstMetadataMux *filter = NULL;
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GstStructure *structure = NULL;
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const gchar *mime = NULL;
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gboolean ret = FALSE;
|
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gboolean based = TRUE;
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|
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filter = GST_METADATA_MUX (gst_pad_get_parent (pad));
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|
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structure = gst_caps_get_structure (caps, 0);
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|
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mime = gst_structure_get_name (structure);
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|
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if (strcmp (mime, "image/jpeg") == 0) {
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GST_BASE_METADATA_IMG_TYPE (filter) = IMG_JPEG;
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} else if (strcmp (mime, "image/png") == 0) {
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GST_BASE_METADATA_IMG_TYPE (filter) = IMG_PNG;
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} else {
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ret = FALSE;
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goto done;
|
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}
|
|
|
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if (gst_structure_get_boolean (structure, "tags-extracted", &based)) {
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if (based == FALSE) {
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ret = FALSE;
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goto done;
|
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}
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}
|
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|
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ret = gst_metadata_mux_configure_srccaps (filter);
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|
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done:
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|
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gst_object_unref (filter);
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|
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return ret;
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}
|
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|
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static GstCaps *
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gst_metadata_mux_get_caps (GstPad * pad)
|
|
{
|
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GstMetadataMux *filter = NULL;
|
|
GstPad *otherpad;
|
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GstCaps *caps_new = NULL;
|
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GstCaps *caps_otherpad_peer = NULL;
|
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|
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filter = GST_METADATA_MUX (gst_pad_get_parent (pad));
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|
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(GST_BASE_METADATA_SRC_PAD (filter) == pad) ?
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(otherpad = GST_BASE_METADATA_SINK_PAD (filter)) :
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(otherpad = GST_BASE_METADATA_SRC_PAD (filter));
|
|
|
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caps_new = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
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|
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caps_otherpad_peer = gst_pad_get_allowed_caps (otherpad);
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GOTO_DONE_IF_NULL (caps_otherpad_peer);
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|
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if (gst_caps_is_empty (caps_otherpad_peer)
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|| gst_caps_is_any (caps_otherpad_peer)) {
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goto done;
|
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} else {
|
|
|
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guint i;
|
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guint caps_size = 0;
|
|
|
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caps_size = gst_caps_get_size (caps_otherpad_peer);
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|
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gst_caps_unref (caps_new);
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|
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caps_new = gst_caps_new_empty ();
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|
|
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for (i = 0; i < caps_size; ++i) {
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|
GstStructure *structure = NULL;
|
|
GstStructure *structure_new = NULL;
|
|
const gchar *mime = NULL;
|
|
|
|
structure = gst_caps_get_structure (caps_otherpad_peer, i);
|
|
|
|
mime = gst_structure_get_name (structure);
|
|
|
|
if (pad == GST_BASE_METADATA_SINK_PAD (filter)) {
|
|
structure_new =
|
|
gst_structure_new (mime, "tags-extracted", G_TYPE_BOOLEAN, TRUE,
|
|
NULL);
|
|
} else {
|
|
structure_new = gst_structure_new (mime, NULL);
|
|
}
|
|
|
|
gst_caps_append_structure (caps_new, structure_new);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
done:
|
|
|
|
if (caps_otherpad_peer) {
|
|
gst_caps_unref (caps_otherpad_peer);
|
|
caps_otherpad_peer = NULL;
|
|
}
|
|
|
|
gst_object_unref (filter);
|
|
|
|
return caps_new;
|
|
|
|
}
|
|
|
|
static gboolean
|
|
gst_metadata_mux_sink_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
GstMetadataMux *filter = NULL;
|
|
gboolean ret = FALSE;
|
|
|
|
filter = GST_METADATA_MUX (gst_pad_get_parent (pad));
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_TAG:
|
|
{
|
|
GstTagList *taglist;
|
|
GstTagSetter *setter = GST_TAG_SETTER (filter);
|
|
const GstTagMergeMode mode = gst_tag_setter_get_tag_merge_mode (setter);
|
|
|
|
gst_event_parse_tag (event, &taglist);
|
|
gst_tag_setter_merge_tags (setter, taglist, mode);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = gst_pad_event_default (pad, event);
|
|
|
|
gst_object_unref (filter);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
/*
|
|
* element plugin init function
|
|
*/
|
|
|
|
gboolean
|
|
gst_metadata_mux_plugin_init (GstPlugin * plugin)
|
|
{
|
|
GST_DEBUG_CATEGORY_INIT (gst_metadata_mux_debug, "metadatamux", 0,
|
|
"Metadata muxer");
|
|
|
|
return gst_element_register (plugin, "metadatamux",
|
|
GST_RANK_NONE, GST_TYPE_METADATA_MUX);
|
|
}
|