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en50221 encoder An implementation for libdvb
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an implementation for the en50221 transport layer
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Copyright (C) 2004, 2005 Manu Abraham <abraham.manu@gmail.com>
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Copyright (C) 2005 Julian Scheel (julian at jusst dot de)
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Copyright (C) 2006 Andrew de Quincey (adq_dvb@lidskialf.net)
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This library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of
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the License, or (at your option) any later version.
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This program 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
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#ifndef __EN50221_APP_UTILS_H__
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#define __EN50221_APP_UTILS_H__
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* A decomposed public resource structure.
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* we will ignore private resource (resource_id_type==3),
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* because they are not used by any modules at all and
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* would need special code for any private resource anyway.
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struct en50221_app_public_resource_id {
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uint16_t resource_class;
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uint16_t resource_type;
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uint8_t resource_version;
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typedef int (*en50221_send_data) (void *arg,
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uint16_t session_number,
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uint16_t data_length);
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typedef int (*en50221_send_datav) (void *arg,
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uint16_t session_number,
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struct iovec * vector,
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* An abstraction away from hardcoded send functions so different layers may be
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* slotted in under the application layer.
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struct en50221_app_send_functions {
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* Argument to pass to these functions.
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en50221_send_data send_data;
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en50221_send_datav send_datav;
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* Make a host-endian uint32_t formatted resource id.
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* @param CLASS Class of resource.
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* @param TYPE Type of resource.
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* @param VERSION Version of resource.
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* @return Formatted resource id.
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#define MKRID(CLASS, TYPE, VERSION) ((((CLASS)&0xffff)<<16) | (((TYPE)&0x3ff)<<6) | ((VERSION)&0x3f))
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* Decode a host-endian public resource_id into an en50221_app_public_resource_id structure.
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* @param idf Structure to write decoded resource_id into.
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* @param resource_id ID to decode.
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* @return Pointer to idf on success, or NULL if this is not a public resource.
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struct en50221_app_public_resource_id *
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en50221_app_decode_public_resource_id(struct en50221_app_public_resource_id *idf,
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uint32_t resource_id);
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* Encode an en50221_app_public_resource_id structure into a host-endian uint32_t.
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* @param idf Structure to encode.
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* @return The encoded value
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static inline uint32_t en50221_app_encode_public_resource_id(struct en50221_app_public_resource_id *idf) {
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return MKRID(idf->resource_class, idf->resource_type, idf->resource_version);
added
removed
src/libdvben50221/en50221_app_utils.h
