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author | Mark Purcell <msp@debian.org> | 2008-06-22 11:00:40 +1000 |
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committer | etobi <git@e-tobi.net> | 2013-09-03 09:48:42 +0200 |
commit | 891c51ff368ed700dec6025eeb47ce4d96f76418 (patch) | |
tree | 3729664829e4faa691d403274f38eb10890b533c /lib/libdvben50221/en50221_app_dvb.c | |
parent | 1c6e1f28f54ec2606c23936c1d8689f2be55a86c (diff) | |
parent | ab959d7b4194715870128e616b8e29d4a101e488 (diff) | |
download | linux-dvb-apps-a966623153d5c69ef156542.tar.gz |
Imported Debian patch 1.1.1+rev1207-1debian/1.1.1+rev1207-1
Diffstat (limited to 'lib/libdvben50221/en50221_app_dvb.c')
-rw-r--r-- | lib/libdvben50221/en50221_app_dvb.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/lib/libdvben50221/en50221_app_dvb.c b/lib/libdvben50221/en50221_app_dvb.c new file mode 100644 index 0000000..21b2bec --- /dev/null +++ b/lib/libdvben50221/en50221_app_dvb.c @@ -0,0 +1,282 @@ +/* + en50221 encoder An implementation for libdvb + an implementation for the en50221 transport layer + + Copyright (C) 2004, 2005 Manu Abraham <abraham.manu@gmail.com> + 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 +*/ + +#include <string.h> +#include <libdvbmisc/dvbmisc.h> +#include <pthread.h> +#include "en50221_app_dvb.h" +#include "en50221_app_tags.h" +#include "asn_1.h" + +struct en50221_app_dvb { + struct en50221_app_send_functions *funcs; + + en50221_app_dvb_tune_callback tune_callback; + void *tune_callback_arg; + + en50221_app_dvb_replace_callback replace_callback; + void *replace_callback_arg; + + en50221_app_dvb_clear_replace_callback clear_replace_callback; + void *clear_replace_callback_arg; + + pthread_mutex_t lock; +}; + +static int en50221_app_dvb_parse_tune(struct en50221_app_dvb *dvb, + uint8_t slot_id, + uint16_t session_number, + uint8_t * data, + uint32_t data_length); + +static int en50221_app_dvb_parse_replace(struct en50221_app_dvb *dvb, + uint8_t slot_id, + uint16_t session_number, + uint8_t * data, + uint32_t data_length); + +static int en50221_app_dvb_parse_clear_replace(struct en50221_app_dvb *dvb, + uint8_t slot_id, + uint16_t session_number, + uint8_t * data, + uint32_t data_length); + + + +struct en50221_app_dvb *en50221_app_dvb_create(struct en50221_app_send_functions *funcs) +{ + struct en50221_app_dvb *dvb = NULL; + + // create structure and set it up + dvb = malloc(sizeof(struct en50221_app_dvb)); + if (dvb == NULL) { + return NULL; + } + dvb->funcs = funcs; + dvb->tune_callback = NULL; + dvb->replace_callback = NULL; + dvb->clear_replace_callback = NULL; + + pthread_mutex_init(&dvb->lock, NULL); + + // done + return dvb; +} + +void en50221_app_dvb_destroy(struct en50221_app_dvb *dvb) +{ + pthread_mutex_destroy(&dvb->lock); + free(dvb); +} + +void en50221_app_dvb_register_tune_callback(struct en50221_app_dvb *dvb, + en50221_app_dvb_tune_callback callback, + void *arg) +{ + pthread_mutex_lock(&dvb->lock); + dvb->tune_callback = callback; + dvb->tune_callback_arg = arg; + pthread_mutex_unlock(&dvb->lock); +} + +void en50221_app_dvb_register_replace_callback(struct en50221_app_dvb *dvb, + en50221_app_dvb_replace_callback callback, + void *arg) +{ + pthread_mutex_lock(&dvb->lock); + dvb->replace_callback = callback; + dvb->replace_callback_arg = arg; + pthread_mutex_unlock(&dvb->lock); +} + +void en50221_app_dvb_register_clear_replace_callback(struct en50221_app_dvb *dvb, + en50221_app_dvb_clear_replace_callback callback, + void *arg) +{ + pthread_mutex_lock(&dvb->lock); + dvb->clear_replace_callback = callback; + dvb->clear_replace_callback_arg = arg; + pthread_mutex_unlock(&dvb->lock); +} + +int en50221_app_dvb_ask_release(struct en50221_app_dvb *dvb, + uint16_t session_number) +{ + uint8_t data[4]; + + data[0] = (TAG_ASK_RELEASE >> 16) & 0xFF; + data[1] = (TAG_ASK_RELEASE >> 8) & 0xFF; + data[2] = TAG_ASK_RELEASE & 0xFF; + data[3] = 0; + + return dvb->funcs->send_data(dvb->funcs->arg, session_number, data, 4); +} + +int en50221_app_dvb_message(struct en50221_app_dvb *dvb, + uint8_t slot_id, + uint16_t session_number, + uint32_t resource_id, + uint8_t * data, uint32_t data_length) +{ + (void) resource_id; + + // get the tag + if (data_length < 3) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + uint32_t tag = (data[0] << 16) | (data[1] << 8) | data[2]; + + switch (tag) { + case TAG_TUNE: + return en50221_app_dvb_parse_tune(dvb, slot_id, + session_number, data + 3, + data_length - 3); + case TAG_REPLACE: + return en50221_app_dvb_parse_replace(dvb, slot_id, + session_number, + data + 3, + data_length - 3); + case TAG_CLEAR_REPLACE: + return en50221_app_dvb_parse_clear_replace(dvb, slot_id, + session_number, + data + 3, + data_length - 3); + } + + print(LOG_LEVEL, ERROR, 1, "Received unexpected tag %x\n", tag); + return -1; +} + + + + + + + + + + +static int en50221_app_dvb_parse_tune(struct en50221_app_dvb *dvb, + uint8_t slot_id, + uint16_t session_number, + uint8_t * data, uint32_t data_length) +{ + // validate data + if (data_length < 9) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + if (data[0] != 8) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + uint8_t *tune_data = data + 1; + + // parse it + uint16_t network_id = (tune_data[0] << 8) | tune_data[1]; + uint16_t original_network_id = (tune_data[2] << 8) | tune_data[3]; + uint16_t transport_stream_id = (tune_data[4] << 8) | tune_data[5]; + uint16_t service_id = (tune_data[6] << 8) | tune_data[7]; + + // tell the app + pthread_mutex_lock(&dvb->lock); + en50221_app_dvb_tune_callback cb = dvb->tune_callback; + void *cb_arg = dvb->tune_callback_arg; + pthread_mutex_unlock(&dvb->lock); + if (cb) { + return cb(cb_arg, slot_id, session_number, network_id, + original_network_id, transport_stream_id, + service_id); + } + return 0; +} + +static int en50221_app_dvb_parse_replace(struct en50221_app_dvb *dvb, + uint8_t slot_id, + uint16_t session_number, + uint8_t * data, + uint32_t data_length) +{ + // validate data + if (data_length < 6) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + if (data[0] != 5) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + uint8_t *replace_data = data + 1; + + // parse it + uint8_t replacement_ref = replace_data[0]; + uint16_t replace_pid = + ((replace_data[1] & 0x1f) << 8) | replace_data[2]; + uint16_t replacement_pid = + ((replace_data[3] & 0x1f) << 8) | replace_data[4]; + + // tell the app + pthread_mutex_lock(&dvb->lock); + en50221_app_dvb_replace_callback cb = dvb->replace_callback; + void *cb_arg = dvb->replace_callback_arg; + pthread_mutex_unlock(&dvb->lock); + if (cb) { + return cb(cb_arg, slot_id, session_number, replacement_ref, + replace_pid, replacement_pid); + } + return 0; +} + +static int en50221_app_dvb_parse_clear_replace(struct en50221_app_dvb *dvb, + uint8_t slot_id, + uint16_t session_number, + uint8_t * data, + uint32_t data_length) +{ + // validate data + if (data_length < 2) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + if (data[0] != 1) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + uint8_t *replace_data = data + 1; + + // parse it + uint8_t replacement_ref = replace_data[0]; + + // tell the app + pthread_mutex_lock(&dvb->lock); + en50221_app_dvb_clear_replace_callback cb = + dvb->clear_replace_callback; + void *cb_arg = dvb->clear_replace_callback_arg; + pthread_mutex_unlock(&dvb->lock); + if (cb) { + return cb(cb_arg, slot_id, session_number, + replacement_ref); + } + return 0; +} |