2 * Copyright (C) <2015> YouView TV Ltd.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
20 #ifndef __GST_PROTECTION_H__
21 #define __GST_PROTECTION_H__
28 * GST_PROTECTION_SYSTEM_ID_CAPS_FIELD:
30 * The field name in a GstCaps that is used to signal the UUID of the protection
35 #define GST_PROTECTION_SYSTEM_ID_CAPS_FIELD "protection-system"
38 * GST_PROTECTION_UNSPECIFIED_SYSTEM_ID:
40 * The protection system value of the unspecified UUID.
41 * In some cases the system protection ID is not present in the contents or in their
42 * metadata, as encrypted WebM.
43 * This define is used to set the value of the "system_id" field in GstProtectionEvent,
44 * with this value, the application will use an external information to choose which
45 * protection system to use.
47 * Example: The matroskademux uses this value in the case of encrypted WebM,
48 * the application will choose the appropriate protection system based on the information
49 * received through EME API.
53 #define GST_PROTECTION_UNSPECIFIED_SYSTEM_ID "unspecified-system-id"
55 typedef struct _GstProtectionMeta GstProtectionMeta;
58 * @meta: the parent #GstMeta.
59 * @info: the cryptographic information needed to decrypt the sample.
61 * Metadata type that holds information about a sample from a protection-protected
62 * track, including the information needed to decrypt it (if it is encrypted).
66 struct _GstProtectionMeta
74 * gst_protection_meta_api_get_type: (attributes doc.skip=true)
77 GType gst_protection_meta_api_get_type (void);
79 #define GST_PROTECTION_META_API_TYPE (gst_protection_meta_api_get_type())
81 #define gst_buffer_get_protection_meta(b) \
82 ((GstProtectionMeta*)gst_buffer_get_meta ((b), GST_PROTECTION_META_API_TYPE))
84 #define GST_PROTECTION_META_INFO (gst_protection_meta_get_info())
87 const GstMetaInfo * gst_protection_meta_get_info (void);
90 GstProtectionMeta * gst_buffer_add_protection_meta (GstBuffer * buffer,
93 const gchar * gst_protection_select_system (const gchar ** system_identifiers);
96 gchar ** gst_protection_filter_systems_by_available_decryptors (
97 const gchar ** system_identifiers);
100 #endif /* __GST_PROTECTION_META_H__ */