From ab959d7b4194715870128e616b8e29d4a101e488 Mon Sep 17 00:00:00 2001 From: etobi Date: Tue, 3 Sep 2013 09:48:41 +0200 Subject: Imported Upstream version 1.1.1+rev1207 --- lib/libdvben50221/en50221_app_utils.h | 112 ++++++++++++++++++++++++++++++++++ 1 file changed, 112 insertions(+) create mode 100644 lib/libdvben50221/en50221_app_utils.h (limited to 'lib/libdvben50221/en50221_app_utils.h') diff --git a/lib/libdvben50221/en50221_app_utils.h b/lib/libdvben50221/en50221_app_utils.h new file mode 100644 index 0000000..5c64760 --- /dev/null +++ b/lib/libdvben50221/en50221_app_utils.h @@ -0,0 +1,112 @@ +/* + en50221 encoder An implementation for libdvb + an implementation for the en50221 transport layer + + Copyright (C) 2004, 2005 Manu Abraham + Copyright (C) 2005 Julian Scheel (julian at jusst dot de) + Copyright (C) 2006 Andrew de Quincey (adq_dvb@lidskialf.net) + + This library is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of + the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#ifndef __EN50221_APP_UTILS_H__ +#define __EN50221_APP_UTILS_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +#include +#include +#include + +/** + * A decomposed public resource structure. + * + * we will ignore private resource (resource_id_type==3), + * because they are not used by any modules at all and + * would need special code for any private resource anyway. + */ +struct en50221_app_public_resource_id { + uint16_t resource_class; + uint16_t resource_type; + uint8_t resource_version; +}; + +typedef int (*en50221_send_data) (void *arg, + uint16_t session_number, + uint8_t * data, + uint16_t data_length); +typedef int (*en50221_send_datav) (void *arg, + uint16_t session_number, + struct iovec * vector, + int iov_count); + +/** + * An abstraction away from hardcoded send functions so different layers may be + * slotted in under the application layer. + */ +struct en50221_app_send_functions { + /** + * Argument to pass to these functions. + */ + void *arg; + + /** + * Send data. + */ + en50221_send_data send_data; + + /** + * Send vector data. + */ + en50221_send_datav send_datav; +}; + +/** + * Make a host-endian uint32_t formatted resource id. + * + * @param CLASS Class of resource. + * @param TYPE Type of resource. + * @param VERSION Version of resource. + * @return Formatted resource id. + */ +#define MKRID(CLASS, TYPE, VERSION) ((((CLASS)&0xffff)<<16) | (((TYPE)&0x3ff)<<6) | ((VERSION)&0x3f)) + +/** + * Decode a host-endian public resource_id into an en50221_app_public_resource_id structure. + * + * @param idf Structure to write decoded resource_id into. + * @param resource_id ID to decode. + * @return Pointer to idf on success, or NULL if this is not a public resource. + */ +struct en50221_app_public_resource_id * + en50221_app_decode_public_resource_id(struct en50221_app_public_resource_id *idf, + uint32_t resource_id); + +/** + * Encode an en50221_app_public_resource_id structure into a host-endian uint32_t. + * + * @param idf Structure to encode. + * @return The encoded value + */ +static inline uint32_t en50221_app_encode_public_resource_id(struct en50221_app_public_resource_id *idf) { + return MKRID(idf->resource_class, idf->resource_type, idf->resource_version); +} + +#ifdef __cplusplus +} +#endif +#endif -- cgit v1.2.3