[libdvbpsi-devel] [PATCH] Add 0x41 descriptor support
Roberto Corno
corno.roberto at gmail.com
Mon May 21 15:00:50 CEST 2012
---
src/Makefile.am | 9 ++-
src/descriptors/dr.h | 1 +
src/descriptors/dr_41.c | 120 +++++++++++++++++++++++++++++++++++++++++++++++
src/descriptors/dr_41.h | 104 ++++++++++++++++++++++++++++++++++++++++
4 files changed, 231 insertions(+), 3 deletions(-)
create mode 100644 src/descriptors/dr_41.c
create mode 100644 src/descriptors/dr_41.h
diff --git a/src/Makefile.am b/src/Makefile.am
index 356bbc2..ec07efa 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -4,7 +4,7 @@ pkgincludedir = $(includedir)/dvbpsi
lib_LTLIBRARIES = libdvbpsi.la
-libdvbpsi_la_SOURCES = dvbpsi.c dvbpsi_private.h \
+libdvbpsi_la_SOURCES = dvbpsi.c dvbpsi_private.h custom.c \
psi.c \
demux.c \
descriptor.c \
@@ -13,7 +13,7 @@ libdvbpsi_la_SOURCES = dvbpsi.c dvbpsi_private.h \
libdvbpsi_la_LDFLAGS = -version-info 8:0:0 -no-undefined
-pkginclude_HEADERS = dvbpsi.h psi.h descriptor.h demux.h \
+pkginclude_HEADERS = dvbpsi.h psi.h descriptor.h demux.h custom.h \
tables/pat.h tables/pmt.h tables/sdt.h tables/eit.h \
tables/cat.h tables/nit.h tables/tot.h tables/sis.h \
tables/bat.h \
@@ -31,6 +31,7 @@ pkginclude_HEADERS = dvbpsi.h psi.h descriptor.h demux.h \
descriptors/dr_0d.h \
descriptors/dr_0e.h \
descriptors/dr_0f.h \
+ descriptors/dr_41.h \
descriptors/dr_42.h \
descriptors/dr_43.h \
descriptors/dr_44.h \
@@ -46,7 +47,7 @@ pkginclude_HEADERS = dvbpsi.h psi.h descriptor.h demux.h \
descriptors/dr_59.h \
descriptors/dr_5a.h \
descriptors/dr_69.h \
- descriptors/dr_8a.h \
+ descriptors/dr_8a.h \
descriptors/dr.h
descriptors_src = descriptors/dr_02.c \
@@ -63,6 +64,8 @@ descriptors_src = descriptors/dr_02.c \
descriptors/dr_0d.c \
descriptors/dr_0e.c \
descriptors/dr_0f.c \
+ descriptors/dr_40.c \
+ descriptors/dr_41.c \
descriptors/dr_42.c \
descriptors/dr_43.c \
descriptors/dr_44.c \
diff --git a/src/descriptors/dr.h b/src/descriptors/dr.h
index 93b27ee..5e71541 100644
--- a/src/descriptors/dr.h
+++ b/src/descriptors/dr.h
@@ -47,6 +47,7 @@
#include "dr_0e.h"
#include "dr_0f.h"
#include "dr_40.h"
+#include "dr_41.h"
#include "dr_42.h"
#include "dr_43.h"
#include "dr_44.h"
diff --git a/src/descriptors/dr_41.c b/src/descriptors/dr_41.c
new file mode 100644
index 0000000..19f8977
--- /dev/null
+++ b/src/descriptors/dr_41.c
@@ -0,0 +1,120 @@
+/*
+ * dr_41.c
+ * Copyright (C) 2001-2011 VideoLAN
+ *
+ * Authors: rcorno (Nov 22, 2011)
+ *
+ * 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 library 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ *****************************************************************************/
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+
+#if defined(HAVE_INTTYPES_H)
+#include <inttypes.h>
+#elif defined(HAVE_STDINT_H)
+#include <stdint.h>
+#endif
+
+#include "../dvbpsi.h"
+#include "../dvbpsi_private.h"
+#include "../descriptor.h"
+
+#include "dr_41.h"
+
+/*****************************************************************************
+ * dvbpsi_DecodeServiceListDr
+ *****************************************************************************/
+dvbpsi_service_list_dr_t* dvbpsi_DecodeServiceListDr(
+ dvbpsi_descriptor_t * p_descriptor)
+{
+ dvbpsi_service_list_dr_t * p_decoded;
+ int i;
+
+ /* Check the tag */
+ if (p_descriptor->i_tag != 0x41)
+ return NULL;
+
+ /* Don't decode twice */
+ if (p_descriptor->p_decoded)
+ return p_descriptor->p_decoded;
+
+ /* Allocate memory */
+ p_decoded = (dvbpsi_service_list_dr_t*)calloc(1, sizeof(dvbpsi_service_list_dr_t));
+ if (!p_decoded)
+ return NULL;
+
+ /* Decode data and check the length */
+ if((p_descriptor->i_length < 1) || (p_descriptor->i_length % 3 != 0))
+ {
+ free(p_decoded);
+ return NULL;
+ }
+ p_decoded->i_service_count = p_descriptor->i_length / 3;
+ i=0;
+ while( i < p_decoded->i_service_count ) {
+ p_decoded->i_service[i].i_service_id = ((uint16_t)(p_descriptor->p_data[i*3]) << 8)
+ | p_descriptor->p_data[i*3+1];
+ p_decoded->i_service[i].i_service_type = p_descriptor->p_data[i*3+2];
+ i++;
+ }
+
+ p_descriptor->p_decoded = (void*)p_decoded;
+
+ return p_decoded;
+}
+
+
+/*****************************************************************************
+ * dvbpsi_GenServiceListDr
+ *****************************************************************************/
+dvbpsi_descriptor_t * dvbpsi_GenServiceListDr(
+ dvbpsi_service_list_dr_t * p_decoded,
+ bool b_duplicate)
+{
+ /* Create the descriptor */
+ dvbpsi_descriptor_t * p_descriptor =
+ dvbpsi_NewDescriptor(0x83, p_decoded->i_service_count*3, NULL);
+
+ if (!p_descriptor)
+ return NULL;
+
+ /* Encode data */
+ int i = 0;
+ while( i < p_decoded->i_service_count ) {
+ p_descriptor->p_data[i*3] = p_decoded->i_service[i].i_service_id >> 8;
+ p_descriptor->p_data[i*3+1] = p_decoded->i_service[i].i_service_id;
+ p_descriptor->p_data[i*3+2] = p_decoded->i_service[i].i_service_type;
+ i++;
+ }
+
+ if (b_duplicate)
+ {
+ /* Duplicate decoded data */
+ dvbpsi_service_list_dr_t * p_dup_decoded =
+ (dvbpsi_service_list_dr_t*)calloc(1, sizeof(dvbpsi_service_list_dr_t));
+ if(p_dup_decoded)
+ memcpy(p_dup_decoded, p_decoded, sizeof(dvbpsi_service_list_dr_t));
+
+ p_descriptor->p_decoded = (void*)p_dup_decoded;
+ }
+
+ return p_descriptor;
+}
diff --git a/src/descriptors/dr_41.h b/src/descriptors/dr_41.h
new file mode 100644
index 0000000..749d316
--- /dev/null
+++ b/src/descriptors/dr_41.h
@@ -0,0 +1,104 @@
+/*****************************************************************************
+ * dr_41.h
+ * Copyright (C) 2001-2011 VideoLAN
+ *
+ * Authors: rcorno (Nov 22, 2011)
+ *
+ * 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 library 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ *****************************************************************************/
+
+/*!
+ * \file <dr_41.h>
+ * \author Corno Roberto <corno.roberto at gmail.com>
+ * \brief Application interface for the DVB "service list"
+ * descriptor decoder and generator.
+ *
+ * Application interface for the DVB "service list" descriptor
+ * decoder and generator. This descriptor's definition can be found in
+ * ETSI EN 300 468 section 6.2.35.
+ */
+
+#ifndef DR_41_H_
+#define DR_41_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*****************************************************************************
+ * dvbpsi_network_name_dr_t
+ *****************************************************************************/
+/*!
+ * \struct dvbpsi_service_list_dr_t
+ * \brief "service list" descriptor structure.
+ *
+ * This structure is used to store a decoded "service list"
+ * descriptor. (ETSI EN 300 468 section 6.2.35).
+ */
+/*!
+ * \typedef struct dvbpsi_service_list_dr_s dvbpsi_service_list_dr_t
+ * \brief dvbpsi_service_list_dr_t type definition.
+ */
+typedef struct dvbpsi_service_list_dr_s
+{
+ uint8_t i_service_count; /*!< length of the i_service_list
+ array */
+ struct {
+ uint16_t i_service_id; /*!< service id */
+ uint8_t i_service_type; /*!< service type */
+ } i_service[64];
+
+} dvbpsi_service_list_dr_t;
+
+/*****************************************************************************
+ * dvbpsi_DecodeServiceListDr
+ *****************************************************************************/
+/*!
+ * \fn dvbpsi_network_name_dr_t * dvbpsi_DecodeNetworkNameDr(
+ dvbpsi_descriptor_t * p_descriptor)
+ * \brief "network name" descriptor decoder.
+ * \param p_descriptor pointer to the descriptor structure
+ * \return a pointer to a new "network name" descriptor structure
+ * which contains the decoded data.
+ */
+dvbpsi_service_list_dr_t* dvbpsi_DecodeServiceListDr(
+ dvbpsi_descriptor_t * p_descriptor);
+
+
+/*****************************************************************************
+ * dvbpsi_GenServiceListDr
+ *****************************************************************************/
+/*!
+ * \fn dvbpsi_descriptor_t * dvbpsi_GenNetworkNameDr(
+ dvbpsi_network_name_dr_t * p_decoded, int b_duplicate)
+ * \brief "network name" descriptor generator.
+ * \param p_decoded pointer to a decoded "network name" descriptor
+ * structure
+ * \param b_duplicate if non zero then duplicate the p_decoded structure into
+ * the descriptor
+ * \return a pointer to a new descriptor structure which contains encoded data.
+ */
+dvbpsi_descriptor_t * dvbpsi_GenServiceListDr(
+ dvbpsi_service_list_dr_t * p_decoded,
+ bool b_duplicate);
+
+#ifdef __cplusplus
+};
+#endif
+
+#else
+#error "Multiple inclusions of dr_41.h"
+#endif /* DR_83_H_ */
--
1.7.5.4
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