[10/11] libdvbv5: add parser for ca and ca_identifier descriptors

Message ID	1395771601-3509-10-git-send-email-neolynx@gmail.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-media-owner@kernel.org> From: =?UTF-8?q?Andr=C3=A9=20Roth?= <neolynx@gmail.com> To: LMML <linux-media@vger.kernel.org> Cc: =?UTF-8?q?Andr=C3=A9=20Roth?= <neolynx@gmail.com> Subject: [PATCH 10/11] libdvbv5: add parser for ca and ca_identifier descriptors Date: Tue, 25 Mar 2014 19:20:00 +0100 Message-Id: <1395771601-3509-10-git-send-email-neolynx@gmail.com> In-Reply-To: <1395771601-3509-1-git-send-email-neolynx@gmail.com> References: <1395771601-3509-1-git-send-email-neolynx@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-media-owner@vger.kernel.org Precedence: bulk

diff --git a/lib/include/libdvbv5/desc_ca.h b/lib/include/libdvbv5/desc_ca.h new file mode 100644 index 0000000..12f4ff3 --- /dev/null +++ b/lib/include/libdvbv5/desc_ca.h @@ -0,0 +1,63 @@ +/* + * Copyright (c) 2013 - Andre Roth <neolynx@gmail.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation version 2 + * of the License. + * + * 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html + * + * Described at ETSI EN 300 468 V1.11.1 (2010-04) + */ + +#ifndef _CA_H +#define _CA_H + +#include <stdint.h> +#include <unistd.h> /* ssize_t */ + +struct dvb_desc_ca { + uint8_t type; + uint8_t length; + struct dvb_desc *next; + + uint16_t ca_id; + union { + uint16_t bitfield1; + struct { + uint16_t ca_pid:13; + uint16_t reserved:3; + } __attribute__((packed)); + } __attribute__((packed)); + + uint8_t *privdata; + uint8_t privdata_len; +} __attribute__((packed)); + +struct dvb_v5_fe_parms; + +#define dvb_desc_ca_field_first ca_id +#define dvb_desc_ca_field_last privdata + +#ifdef __cplusplus +extern "C" { +#endif + +void dvb_desc_ca_init (struct dvb_v5_fe_parms *parms, const uint8_t *buf, struct dvb_desc *desc); +void dvb_desc_ca_print(struct dvb_v5_fe_parms *parms, const struct dvb_desc *desc); +void dvb_desc_ca_free (struct dvb_desc *desc); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/include/libdvbv5/desc_ca_identifier.h b/lib/include/libdvbv5/desc_ca_identifier.h new file mode 100644 index 0000000..18df191 --- /dev/null +++ b/lib/include/libdvbv5/desc_ca_identifier.h @@ -0,0 +1,55 @@ +/* + * Copyright (c) 2013 - Andre Roth <neolynx@gmail.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation version 2 + * of the License. + * + * 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html + * + * Described at ETSI EN 300 468 V1.11.1 (2010-04) + */ + +#ifndef _CA_IDENTIFIER_H +#define _CA_IDENTIFIER_H + +#include <stdint.h> +#include <unistd.h> /* ssize_t */ + +struct dvb_desc_ca_identifier { + uint8_t type; + uint8_t length; + struct dvb_desc *next; + + uint8_t caid_count; + uint16_t *caids; + +} __attribute__((packed)); + +struct dvb_v5_fe_parms; + +#define dvb_desc_ca_identifier_field_first ca_id +#define dvb_desc_ca_identifier_field_last privdata + +#ifdef __cplusplus +extern "C" { +#endif + +void dvb_desc_ca_identifier_init (struct dvb_v5_fe_parms *parms, const uint8_t *buf, struct dvb_desc *desc); +void dvb_desc_ca_identifier_print(struct dvb_v5_fe_parms *parms, const struct dvb_desc *desc); +void dvb_desc_ca_identifier_free (struct dvb_desc *desc); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/lib/libdvbv5/Makefile.am b/lib/libdvbv5/Makefile.am index 0abe42d..667a1af 100644 --- a/lib/libdvbv5/Makefile.am +++ b/lib/libdvbv5/Makefile.am @@ -33,6 +33,9 @@ otherinclude_HEADERS = \ ../include/libdvbv5/desc_logical_channel.h \ ../include/libdvbv5/desc_ts_info.h \ ../include/libdvbv5/desc_partial_reception.h \ + ../include/libdvbv5/desc_service_location.h \ + ../include/libdvbv5/desc_ca.h \ + ../include/libdvbv5/desc_ca_identifier.h \ ../include/libdvbv5/nit.h \ ../include/libdvbv5/sdt.h \ ../include/libdvbv5/vct.h \ @@ -41,7 +44,6 @@ otherinclude_HEADERS = \ ../include/libdvbv5/eit.h \ ../include/libdvbv5/cat.h \ ../include/libdvbv5/atsc_eit.h \ - ../include/libdvbv5/desc_service_location.h \ ../include/libdvbv5/mpeg_ts.h \ ../include/libdvbv5/mpeg_pes.h \ ../include/libdvbv5/mpeg_es.h @@ -96,8 +98,10 @@ libdvbv5_la_SOURCES = \ descriptors/desc_ts_info.c \ descriptors/desc_partial_reception.c \ descriptors/desc_service_location.c \ - descriptors/mpeg_ts.c \ - descriptors/mpeg_pes.c \ + descriptors/desc_ca.c \ + descriptors/desc_ca_identifier.c \ + descriptors/mpeg_ts.c \ + descriptors/mpeg_pes.c \ descriptors/mpeg_es.c libdvbv5_la_CPPFLAGS = -I../.. $(ENFORCE_LIBDVBV5_STATIC) diff --git a/lib/libdvbv5/descriptors.c b/lib/libdvbv5/descriptors.c index ba83d41..418576c 100644 --- a/lib/libdvbv5/descriptors.c +++ b/lib/libdvbv5/descriptors.c @@ -55,6 +55,8 @@ #include <libdvbv5/desc_ts_info.h> #include <libdvbv5/desc_logical_channel.h> #include <libdvbv5/desc_partial_reception.h> +#include <libdvbv5/desc_ca.h> +#include <libdvbv5/desc_ca_identifier.h> #include <libdvbv5/desc_extension.h> static void dvb_desc_init(uint8_t type, uint8_t length, struct dvb_desc *desc) @@ -242,10 +244,10 @@ const struct dvb_descriptor dvb_descriptors[] = { }, [conditional_access_descriptor] = { .name = "conditional_access_descriptor", - .init = NULL, - .print = NULL, - .free = NULL, - .size = 0, + .init = dvb_desc_ca_init, + .print = dvb_desc_ca_print, + .free = dvb_desc_ca_free, + .size = sizeof(struct dvb_desc_ca), }, [iso639_language_descriptor] = { .name = "iso639_language_descriptor", @@ -571,10 +573,10 @@ const struct dvb_descriptor dvb_descriptors[] = { }, [CA_identifier_descriptor] = { .name = "CA_identifier_descriptor", - .init = NULL, - .print = NULL, - .free = NULL, - .size = 0, + .init = dvb_desc_ca_identifier_init, + .print = dvb_desc_ca_identifier_print, + .free = dvb_desc_ca_identifier_free, + .size = sizeof(struct dvb_desc_ca_identifier), }, [content_descriptor] = { .name = "content_descriptor", diff --git a/lib/libdvbv5/descriptors/desc_ca.c b/lib/libdvbv5/descriptors/desc_ca.c new file mode 100644 index 0000000..6b48175 --- /dev/null +++ b/lib/libdvbv5/descriptors/desc_ca.c @@ -0,0 +1,64 @@ +/* + * Copyright (c) 2013 - Andre Roth <neolynx@gmail.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation version 2 + * of the License. + * + * 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html + * + * Described at ETSI EN 300 468 V1.11.1 (2010-04) + */ + +#include <libdvbv5/desc_ca.h> +#include <libdvbv5/descriptors.h> +#include <libdvbv5/dvb-fe.h> + +void dvb_desc_ca_init(struct dvb_v5_fe_parms *parms, const uint8_t *buf, struct dvb_desc *desc) +{ + size_t size = offsetof(struct dvb_desc_ca, dvb_desc_ca_field_last) - offsetof(struct dvb_desc_ca, dvb_desc_ca_field_first); + struct dvb_desc_ca *d = (struct dvb_desc_ca *) desc; + + memcpy(((uint8_t *) d ) + sizeof(struct dvb_desc), buf, size); + bswap16(d->ca_id); + bswap16(d->bitfield1); + + if (d->length > size) { + size = d->length - size; + d->privdata = malloc(size); + d->privdata_len = size; + memcpy(d->privdata, buf + 4, size); + } else { + d->privdata = NULL; + d->privdata_len = 0; + } + /*hexdump(parms, "desc ca ", buf, desc->length);*/ + /*dvb_desc_ca_print(parms, desc);*/ +} + +void dvb_desc_ca_print(struct dvb_v5_fe_parms *parms, const struct dvb_desc *desc) +{ + const struct dvb_desc_ca *d = (const struct dvb_desc_ca *) desc; + dvb_log("| ca_id %04x", d->ca_id); + dvb_log("| ca_pid %04x", d->ca_pid); + dvb_log("| privdata length %d", d->privdata_len); + if (d->privdata) + hexdump(parms, "| privdata ", d->privdata, d->privdata_len); +} + +void dvb_desc_ca_free(struct dvb_desc *desc) +{ + struct dvb_desc_ca *d = (struct dvb_desc_ca *) desc; + if (d->privdata) + free(d->privdata); +} + diff --git a/lib/libdvbv5/descriptors/desc_ca_identifier.c b/lib/libdvbv5/descriptors/desc_ca_identifier.c new file mode 100644 index 0000000..4740a01 --- /dev/null +++ b/lib/libdvbv5/descriptors/desc_ca_identifier.c @@ -0,0 +1,58 @@ +/* + * Copyright (c) 2013 - Andre Roth <neolynx@gmail.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation version 2 + * of the License. + * + * 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html + * + * Described at ETSI EN 300 468 V1.11.1 (2010-04) + */ + +#include <libdvbv5/desc_ca_identifier.h> +#include <libdvbv5/descriptors.h> +#include <libdvbv5/dvb-fe.h> + +void dvb_desc_ca_identifier_init(struct dvb_v5_fe_parms *parms, const uint8_t *buf, struct dvb_desc *desc) +{ + struct dvb_desc_ca_identifier *d = (struct dvb_desc_ca_identifier *) desc; + int i; + + d->caid_count = d->length >> 1; /* FIXME: warn if odd */ + d->caids = malloc(d->length); + if (!d->caids) { + dvb_logerr("dvb_desc_ca_identifier_init: out of memory"); + return; + } + for (i = 0; i < d->caid_count; i++) { + d->caids[i] = ((uint16_t *) buf)[i]; + bswap16(d->caids[i]); + } +} + +void dvb_desc_ca_identifier_print(struct dvb_v5_fe_parms *parms, const struct dvb_desc *desc) +{ + const struct dvb_desc_ca_identifier *d = (const struct dvb_desc_ca_identifier *) desc; + int i; + + for (i = 0; i < d->caid_count; i++) + dvb_log("| caid %d %04x", i, d->caids[i]); +} + +void dvb_desc_ca_identifier_free(struct dvb_desc *desc) +{ + struct dvb_desc_ca_identifier *d = (struct dvb_desc_ca_identifier *) desc; + if (d->caids) + free(d->caids); +} +

[10/11] libdvbv5: add parser for ca and ca_identifier descriptors

Commit Message

Patch