2013-09-26 11:21:59 +00:00
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/* GStreamer
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2013-09-26 11:37:09 +00:00
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* Copyright (C) 2013 Fluendo S.L. <support@fluendo.com>
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* Authors: 2013 Andoni Morales Alastruey <amorales@fluendo.com>
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* Copyright (C) 2013 Sebastian Dröge <slomo@circular-chaos.org>
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2013-09-26 11:21:59 +00:00
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*
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* gstios_assetsrc.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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/**
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* SECTION:element-ios_assetsrc
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* @see_also: #GstIOSAssetSrc
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*
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* Read data from an iOS asset from the media library.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch iosassetsrc uri=assets-library://asset/asset.M4V?id=11&ext=M4V ! decodebin2 ! autoaudiosink
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* ]| Plays asset with id a song.ogg from local dir.
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* </refsect2>
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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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2014-04-03 13:02:18 +00:00
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#include <gst/base/base.h>
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2013-09-26 11:21:59 +00:00
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#include "iosassetsrc.h"
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static GstStaticPadTemplate srctemplate = 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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GST_DEBUG_CATEGORY_STATIC (gst_ios_asset_src_debug);
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#define GST_CAT_DEFAULT gst_ios_asset_src_debug
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#define DEFAULT_BLOCKSIZE 4*1024
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#define OBJC_CALLOUT_BEGIN() \
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NSAutoreleasePool *pool; \
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\
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pool = [[NSAutoreleasePool alloc] init]
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#define OBJC_CALLOUT_END() \
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[pool release]
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enum
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{
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2013-09-26 11:37:09 +00:00
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PROP_0,
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PROP_URI,
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2013-09-26 11:21:59 +00:00
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};
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static void gst_ios_asset_src_finalize (GObject * object);
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static void gst_ios_asset_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_ios_asset_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static gboolean gst_ios_asset_src_start (GstBaseSrc * basesrc);
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static gboolean gst_ios_asset_src_stop (GstBaseSrc * basesrc);
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static gboolean gst_ios_asset_src_is_seekable (GstBaseSrc * src);
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static gboolean gst_ios_asset_src_get_size (GstBaseSrc * src, guint64 * size);
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static GstFlowReturn gst_ios_asset_src_create (GstBaseSrc * src, guint64 offset,
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guint length, GstBuffer ** buffer);
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static gboolean gst_ios_asset_src_query (GstBaseSrc * src, GstQuery * query);
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static void gst_ios_asset_src_uri_handler_init (gpointer g_iface,
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gpointer iface_data);
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static void
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_do_init (GType ios_assetsrc_type)
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{
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static const GInterfaceInfo urihandler_info = {
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gst_ios_asset_src_uri_handler_init,
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NULL,
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NULL
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};
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g_type_add_interface_static (ios_assetsrc_type, GST_TYPE_URI_HANDLER,
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&urihandler_info);
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GST_DEBUG_CATEGORY_INIT (gst_ios_asset_src_debug, "iosassetsrc", 0, "iosassetsrc element");
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}
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2013-09-26 11:37:09 +00:00
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G_DEFINE_TYPE_WITH_CODE (GstIOSAssetSrc, gst_ios_asset_src, GST_TYPE_BASE_SRC,
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_do_init (g_define_type_id));
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2013-09-26 11:21:59 +00:00
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static void
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gst_ios_asset_src_class_init (GstIOSAssetSrcClass * klass)
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{
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GObjectClass *gobject_class;
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2013-09-26 11:37:09 +00:00
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GstElementClass *gstelement_class;
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2013-09-26 11:21:59 +00:00
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GstBaseSrcClass *gstbasesrc_class;
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gobject_class = G_OBJECT_CLASS (klass);
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2013-09-26 11:37:09 +00:00
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gstelement_class = GST_ELEMENT_CLASS (klass);
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2013-09-26 11:21:59 +00:00
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gstbasesrc_class = GST_BASE_SRC_CLASS (klass);
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gobject_class->set_property = gst_ios_asset_src_set_property;
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gobject_class->get_property = gst_ios_asset_src_get_property;
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2013-09-26 11:37:09 +00:00
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g_object_class_install_property (gobject_class, PROP_URI,
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2013-09-26 11:21:59 +00:00
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g_param_spec_string ("uri", "Asset URI",
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"URI of the asset to read", NULL,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
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GST_PARAM_MUTABLE_READY));
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gobject_class->finalize = gst_ios_asset_src_finalize;
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2013-09-26 11:37:09 +00:00
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gst_element_class_set_static_metadata (gstelement_class,
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"IOSAsset Source",
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"Source/File",
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"Read from arbitrary point in a iOS asset",
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"Andoni Morales Alastruey <amorales@fluendo.com>");
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&srctemplate));
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2013-09-26 11:21:59 +00:00
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gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_ios_asset_src_start);
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gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_ios_asset_src_stop);
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gstbasesrc_class->is_seekable = GST_DEBUG_FUNCPTR (gst_ios_asset_src_is_seekable);
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gstbasesrc_class->get_size = GST_DEBUG_FUNCPTR (gst_ios_asset_src_get_size);
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gstbasesrc_class->create = GST_DEBUG_FUNCPTR (gst_ios_asset_src_create);
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gstbasesrc_class->query = GST_DEBUG_FUNCPTR (gst_ios_asset_src_query);
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}
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static void
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2013-09-26 11:37:09 +00:00
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gst_ios_asset_src_init (GstIOSAssetSrc * src)
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2013-09-26 11:21:59 +00:00
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{
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OBJC_CALLOUT_BEGIN ();
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src->uri = NULL;
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src->asset = NULL;
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src->library = [[[GstAssetsLibrary alloc] init] retain];
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gst_base_src_set_blocksize (GST_BASE_SRC (src), DEFAULT_BLOCKSIZE);
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OBJC_CALLOUT_END ();
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}
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static void
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gst_ios_asset_src_free_resources (GstIOSAssetSrc *src)
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{
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OBJC_CALLOUT_BEGIN ();
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if (src->asset != NULL) {
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[src->asset release];
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src->asset = NULL;
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}
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if (src->url != NULL) {
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[src->url release];
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src->url = NULL;
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}
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if (src->uri != NULL) {
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g_free (src->uri);
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src->uri = NULL;
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}
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OBJC_CALLOUT_END ();
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}
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static void
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gst_ios_asset_src_finalize (GObject * object)
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{
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GstIOSAssetSrc *src;
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OBJC_CALLOUT_BEGIN ();
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src = GST_IOS_ASSET_SRC (object);
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gst_ios_asset_src_free_resources (src);
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[src->library release];
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OBJC_CALLOUT_END ();
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2013-09-26 11:37:09 +00:00
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G_OBJECT_CLASS (gst_ios_asset_src_parent_class)->finalize (object);
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2013-09-26 11:21:59 +00:00
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}
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static gboolean
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2013-09-26 11:37:09 +00:00
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gst_ios_asset_src_set_uri (GstIOSAssetSrc * src, const gchar * uri, GError **err)
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2013-09-26 11:21:59 +00:00
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{
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GstState state;
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NSString *nsuristr;
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NSURL *url;
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OBJC_CALLOUT_BEGIN ();
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/* the element must be stopped in order to do this */
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GST_OBJECT_LOCK (src);
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state = GST_STATE (src);
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if (state != GST_STATE_READY && state != GST_STATE_NULL)
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goto wrong_state;
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GST_OBJECT_UNLOCK (src);
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gst_ios_asset_src_free_resources (src);
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nsuristr = [[NSString alloc] initWithUTF8String:uri];
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url = [[NSURL alloc] initWithString:nsuristr];
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if (url == NULL) {
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2013-09-26 11:37:09 +00:00
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GST_ERROR_OBJECT (src, "Invalid URI: %s", src->uri);
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g_set_error (err, GST_URI_ERROR, GST_URI_ERROR_BAD_URI,
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"Invalid URI: %s", src->uri);
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2013-09-26 11:21:59 +00:00
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return FALSE;
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}
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GST_INFO_OBJECT (src, "URI : %s", src->uri);
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src->url = url;
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src->uri = g_strdup (uri);
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g_object_notify (G_OBJECT (src), "uri");
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OBJC_CALLOUT_END ();
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return TRUE;
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/* ERROR */
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wrong_state:
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{
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g_warning ("Changing the 'uri' property on iosassetsrc when an asset is "
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"open is not supported.");
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2013-09-26 11:37:09 +00:00
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g_set_error (err, GST_URI_ERROR, GST_URI_ERROR_BAD_STATE,
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"Changing the 'uri' property on iosassetsrc when an asset is "
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"open is not supported.");
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2013-09-26 11:21:59 +00:00
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GST_OBJECT_UNLOCK (src);
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OBJC_CALLOUT_END ();
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return FALSE;
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}
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}
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static void
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gst_ios_asset_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstIOSAssetSrc *src;
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g_return_if_fail (GST_IS_IOS_ASSET_SRC (object));
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src = GST_IOS_ASSET_SRC (object);
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switch (prop_id) {
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2013-09-26 11:37:09 +00:00
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case PROP_URI:
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gst_ios_asset_src_set_uri (src, g_value_get_string (value), NULL);
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2013-09-26 11:21:59 +00:00
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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_ios_asset_src_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstIOSAssetSrc *src;
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g_return_if_fail (GST_IS_IOS_ASSET_SRC (object));
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src = GST_IOS_ASSET_SRC (object);
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switch (prop_id) {
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2013-09-26 11:37:09 +00:00
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case PROP_URI:
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2013-09-26 11:21:59 +00:00
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g_value_set_string (value, src->uri);
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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 GstFlowReturn
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gst_ios_asset_src_create (GstBaseSrc * basesrc, guint64 offset, guint length,
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GstBuffer ** buffer)
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{
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2013-09-26 11:37:09 +00:00
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GstBuffer *buf = NULL;
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GstMapInfo info;
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2013-09-26 11:21:59 +00:00
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NSError *err = nil;
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guint bytes_read;
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GstFlowReturn ret;
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GstIOSAssetSrc *src = GST_IOS_ASSET_SRC (basesrc);
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OBJC_CALLOUT_BEGIN ();
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2013-09-26 11:37:09 +00:00
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buf = gst_buffer_new_and_alloc (length);
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2013-09-26 11:21:59 +00:00
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if (G_UNLIKELY (buf == NULL && length > 0)) {
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GST_ERROR_OBJECT (src, "Failed to allocate %u bytes", length);
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ret = GST_FLOW_ERROR;
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goto exit;
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}
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2013-09-26 11:37:09 +00:00
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gst_buffer_map (buf, &info, GST_MAP_READWRITE);
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2013-09-26 11:21:59 +00:00
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/* No need to read anything if length is 0 */
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2013-09-26 11:37:09 +00:00
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bytes_read = [src->asset getBytes: info.data
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2013-09-26 11:21:59 +00:00
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fromOffset:offset
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length:length
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error:&err];
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if (G_UNLIKELY (err != NULL)) {
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goto could_not_read;
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}
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/* we should eos if we read less than what was requested */
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if (G_UNLIKELY (bytes_read < length)) {
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2013-09-26 11:37:09 +00:00
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GST_DEBUG ("EOS");
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ret = GST_FLOW_EOS;
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} else {
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ret = GST_FLOW_OK;
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2013-09-26 11:21:59 +00:00
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}
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2013-09-26 11:37:09 +00:00
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gst_buffer_unmap (buf, &info);
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gst_buffer_set_size (buf, bytes_read);
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GST_BUFFER_OFFSET (buf) = offset;
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2013-09-26 11:21:59 +00:00
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GST_BUFFER_OFFSET_END (buf) = offset + bytes_read;
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*buffer = buf;
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goto exit;
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/* ERROR */
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could_not_read:
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{
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GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
|
2013-09-26 11:37:09 +00:00
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gst_buffer_unmap (buf, &info);
|
2013-09-26 11:21:59 +00:00
|
|
|
gst_buffer_unref (buf);
|
|
|
|
ret = GST_FLOW_ERROR;
|
|
|
|
goto exit;
|
|
|
|
}
|
|
|
|
exit:
|
|
|
|
{
|
|
|
|
OBJC_CALLOUT_END ();
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
gst_ios_asset_src_query (GstBaseSrc * basesrc, GstQuery * query)
|
|
|
|
{
|
|
|
|
gboolean ret = FALSE;
|
|
|
|
GstIOSAssetSrc *src = GST_IOS_ASSET_SRC (basesrc);
|
|
|
|
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
|
|
case GST_QUERY_URI:
|
|
|
|
gst_query_set_uri (query, src->uri);
|
|
|
|
ret = TRUE;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
ret = FALSE;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!ret)
|
2013-09-26 11:37:09 +00:00
|
|
|
ret = GST_BASE_SRC_CLASS (gst_ios_asset_src_parent_class)->query (basesrc, query);
|
2013-09-26 11:21:59 +00:00
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
gst_ios_asset_src_is_seekable (GstBaseSrc * basesrc)
|
|
|
|
{
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
gst_ios_asset_src_get_size (GstBaseSrc * basesrc, guint64 * size)
|
|
|
|
{
|
|
|
|
GstIOSAssetSrc *src;
|
|
|
|
|
|
|
|
src = GST_IOS_ASSET_SRC (basesrc);
|
|
|
|
|
|
|
|
OBJC_CALLOUT_BEGIN ();
|
|
|
|
*size = (guint64) [src->asset size];
|
|
|
|
OBJC_CALLOUT_END ();
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
|
|
|
gst_ios_asset_src_start (GstBaseSrc * basesrc)
|
|
|
|
{
|
|
|
|
GstIOSAssetSrc *src = GST_IOS_ASSET_SRC (basesrc);
|
|
|
|
gboolean ret = TRUE;
|
|
|
|
|
|
|
|
OBJC_CALLOUT_BEGIN ();
|
|
|
|
src->asset = [[src->library assetForURLSync: src->url] retain];
|
|
|
|
|
|
|
|
if (src->asset == NULL) {
|
|
|
|
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
|
|
|
|
("Could not open asset \"%s\" for reading.", src->uri),
|
|
|
|
GST_ERROR_SYSTEM);
|
|
|
|
ret = FALSE;
|
|
|
|
};
|
|
|
|
|
|
|
|
OBJC_CALLOUT_END ();
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* unmap and close the ios_asset */
|
|
|
|
static gboolean
|
|
|
|
gst_ios_asset_src_stop (GstBaseSrc * basesrc)
|
|
|
|
{
|
|
|
|
GstIOSAssetSrc *src = GST_IOS_ASSET_SRC (basesrc);
|
|
|
|
|
|
|
|
OBJC_CALLOUT_BEGIN ();
|
|
|
|
[src->asset release];
|
|
|
|
OBJC_CALLOUT_END ();
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static GstURIType
|
2013-09-26 11:37:09 +00:00
|
|
|
gst_ios_asset_src_uri_get_type (GType type)
|
2013-09-26 11:21:59 +00:00
|
|
|
{
|
|
|
|
return GST_URI_SRC;
|
|
|
|
}
|
|
|
|
|
2013-09-26 11:37:09 +00:00
|
|
|
static const gchar * const *
|
|
|
|
gst_ios_asset_src_uri_get_protocols (GType type)
|
2013-09-26 11:21:59 +00:00
|
|
|
{
|
2013-09-26 11:37:09 +00:00
|
|
|
static const gchar * const protocols[] = { "assets-library", NULL };
|
2013-09-26 11:21:59 +00:00
|
|
|
|
|
|
|
return protocols;
|
|
|
|
}
|
|
|
|
|
2013-09-26 11:37:09 +00:00
|
|
|
static gchar *
|
2013-09-26 11:21:59 +00:00
|
|
|
gst_ios_asset_src_uri_get_uri (GstURIHandler * handler)
|
|
|
|
{
|
|
|
|
GstIOSAssetSrc *src = GST_IOS_ASSET_SRC (handler);
|
|
|
|
|
2013-09-26 11:37:09 +00:00
|
|
|
return g_strdup (src->uri);
|
2013-09-26 11:21:59 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static gboolean
|
2013-09-26 11:37:09 +00:00
|
|
|
gst_ios_asset_src_uri_set_uri (GstURIHandler * handler, const gchar * uri, GError **err)
|
2013-09-26 11:21:59 +00:00
|
|
|
{
|
|
|
|
GstIOSAssetSrc *src = GST_IOS_ASSET_SRC (handler);
|
|
|
|
|
|
|
|
if (! g_str_has_prefix (uri, "assets-library://")) {
|
2013-09-26 11:37:09 +00:00
|
|
|
GST_WARNING_OBJECT (src, "Invalid URI '%s' for ios_assetsrc", uri);
|
|
|
|
g_set_error (err, GST_URI_ERROR, GST_URI_ERROR_BAD_URI,
|
|
|
|
"Invalid URI '%s' for ios_assetsrc", uri);
|
2013-09-26 11:21:59 +00:00
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
2013-09-26 11:37:09 +00:00
|
|
|
return gst_ios_asset_src_set_uri (src, uri, err);
|
2013-09-26 11:21:59 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
gst_ios_asset_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
|
|
|
|
{
|
|
|
|
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
|
|
|
|
|
|
|
|
iface->get_type = gst_ios_asset_src_uri_get_type;
|
|
|
|
iface->get_protocols = gst_ios_asset_src_uri_get_protocols;
|
|
|
|
iface->get_uri = gst_ios_asset_src_uri_get_uri;
|
|
|
|
iface->set_uri = gst_ios_asset_src_uri_set_uri;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
@implementation GstAssetsLibrary
|
|
|
|
|
|
|
|
@synthesize asset;
|
|
|
|
@synthesize result;
|
|
|
|
|
|
|
|
- (id) init
|
|
|
|
{
|
|
|
|
self = [super init];
|
|
|
|
|
|
|
|
return self;
|
|
|
|
}
|
|
|
|
|
|
|
|
- (ALAssetRepresentation *) assetForURLSync:(NSURL*) uri
|
|
|
|
{
|
|
|
|
dispatch_semaphore_t sema = dispatch_semaphore_create(0);
|
|
|
|
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0);
|
|
|
|
|
|
|
|
dispatch_async(queue, ^{
|
|
|
|
[self assetForURL:uri resultBlock:
|
|
|
|
^(ALAsset *myasset)
|
|
|
|
{
|
|
|
|
self.asset = myasset;
|
|
|
|
self.result = [myasset defaultRepresentation];
|
|
|
|
|
|
|
|
dispatch_semaphore_signal(sema);
|
|
|
|
}
|
|
|
|
failureBlock:
|
|
|
|
^(NSError *myerror)
|
|
|
|
{
|
|
|
|
self.result = nil;
|
|
|
|
dispatch_semaphore_signal(sema);
|
|
|
|
}
|
|
|
|
];
|
|
|
|
});
|
|
|
|
|
|
|
|
dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER);
|
|
|
|
dispatch_release(sema);
|
|
|
|
|
|
|
|
return self.result;
|
|
|
|
}
|
|
|
|
@end
|