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authoretobi <git@e-tobi.net>2013-09-03 09:48:41 +0200
committeretobi <git@e-tobi.net>2013-09-03 09:48:41 +0200
commitab959d7b4194715870128e616b8e29d4a101e488 (patch)
tree61a746231d30817be73416a7d67763fd677a1042 /lib/libesg/encapsulation
parent6b350466c4902c5b137e0efaf1d189128a7f18f5 (diff)
downloadlinux-dvb-apps-753ce5b9809deed38d6db404dc72e1e0e8ac4b29.tar.gz
Imported Upstream version 1.1.1+rev1207upstream/1.1.1+rev1207
Diffstat (limited to 'lib/libesg/encapsulation')
-rw-r--r--lib/libesg/encapsulation/Makefile28
-rw-r--r--lib/libesg/encapsulation/auxiliary_data.h62
-rw-r--r--lib/libesg/encapsulation/container.c206
-rw-r--r--lib/libesg/encapsulation/container.h94
-rw-r--r--lib/libesg/encapsulation/data_repository.c53
-rw-r--r--lib/libesg/encapsulation/data_repository.h59
-rw-r--r--lib/libesg/encapsulation/fragment_management_information.c118
-rw-r--r--lib/libesg/encapsulation/fragment_management_information.h96
-rw-r--r--lib/libesg/encapsulation/string_repository.c54
-rw-r--r--lib/libesg/encapsulation/string_repository.h60
10 files changed, 830 insertions, 0 deletions
diff --git a/lib/libesg/encapsulation/Makefile b/lib/libesg/encapsulation/Makefile
new file mode 100644
index 0000000..2f222ed
--- /dev/null
+++ b/lib/libesg/encapsulation/Makefile
@@ -0,0 +1,28 @@
+# Makefile for linuxtv.org dvb-apps/lib/libesg/encapsulation
+
+.PHONY: sub-error-encapsulation
+
+sub-error-encapsulation:
+ $(error You can't use this makefile directly.)
+
+ifneq ($(lib_name),)
+
+objects += encapsulation/container.o \
+ encapsulation/fragment_management_information.o \
+ encapsulation/data_repository.o \
+ encapsulation/string_repository.o
+
+sub-install += encapsulation
+
+else
+
+includes = container.h \
+ fragment_management_information.h \
+ data_repository.h \
+ string_repository.h
+
+include ../../../Make.rules
+
+lib_name = libesg/encapsulation
+
+endif
diff --git a/lib/libesg/encapsulation/auxiliary_data.h b/lib/libesg/encapsulation/auxiliary_data.h
new file mode 100644
index 0000000..e05b241
--- /dev/null
+++ b/lib/libesg/encapsulation/auxiliary_data.h
@@ -0,0 +1,62 @@
+/*
+ * ESG parser
+ *
+ * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr)
+ *
+ * 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
+ */
+
+#ifndef _ESG_ENCAPSULATION_AUXILIARY_DATA_H
+#define _ESG_ENCAPSULATION_AUXILIARY_DATA_H 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <stdint.h>
+
+/**
+ * esg_any_attribute structure.
+ */
+struct esg_any_attribute {
+ uint8_t version_id;
+ uint8_t *extension;
+
+ struct esg_any_attribure *_next;
+};
+
+/**
+ * esg_binary_header structure.
+ */
+struct esg_binary_header {
+ uint16_t encoding_metadatauri_mimetype;
+ struct esg_any_attribute *any_attribute_list;
+};
+
+/**
+ * esg_encapsulated_aux_data struct.
+ */
+struct esg_encapsulated_aux_data {
+ struct esg_binary_header *binary_header;
+ uint32_t aux_data_length;
+ uint8_t aux_data;
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/lib/libesg/encapsulation/container.c b/lib/libesg/encapsulation/container.c
new file mode 100644
index 0000000..15b17bf
--- /dev/null
+++ b/lib/libesg/encapsulation/container.c
@@ -0,0 +1,206 @@
+/*
+ * ESG parser
+ *
+ * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr)
+ *
+ * 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 <stdlib.h>
+#include <string.h>
+
+#include <libesg/encapsulation/container.h>
+#include <libesg/encapsulation/fragment_management_information.h>
+#include <libesg/encapsulation/data_repository.h>
+#include <libesg/encapsulation/string_repository.h>
+#include <libesg/representation/init_message.h>
+#include <libesg/transport/session_partition_declaration.h>
+
+struct esg_container *esg_container_decode(uint8_t *buffer, uint32_t size) {
+ uint32_t pos;
+ struct esg_container *container;
+ struct esg_container_structure *structure;
+ struct esg_container_structure *last_structure;
+ uint8_t structure_index;
+
+ if ((buffer == NULL) || (size <= 1)) {
+ return NULL;
+ }
+
+ pos = 0;
+
+ container = (struct esg_container *) malloc(sizeof(struct esg_container));
+ memset(container, 0, sizeof(struct esg_container));
+
+ // Container header
+ container->header = (struct esg_container_header *) malloc(sizeof(struct esg_container_header));
+ memset(container->header, 0, sizeof(struct esg_container_header));
+
+ container->header->num_structures = buffer[pos];
+ pos += 1;
+
+ if (size < pos + (container->header->num_structures * 8)) {
+ esg_container_free(container);
+ return NULL;
+ }
+
+ last_structure = NULL;
+ for (structure_index = 0; structure_index < container->header->num_structures; structure_index++) {
+ structure = (struct esg_container_structure *) malloc(sizeof(struct esg_container_structure));
+ memset(structure, 0, sizeof(struct esg_container_structure));
+ structure->_next = NULL;
+
+ if (last_structure == NULL) {
+ container->header->structure_list = structure;
+ } else {
+ last_structure->_next = structure;
+ }
+ last_structure = structure;
+
+ structure->type = buffer[pos];
+ pos += 1;
+
+ structure->id = buffer[pos];
+ pos += 1;
+
+ structure->ptr = (buffer[pos] << 16) | (buffer[pos+1] << 8) | buffer[pos+2];
+ pos += 3;
+
+ structure->length = (buffer[pos] << 16) | (buffer[pos+1] << 8) | buffer[pos+2];
+ pos += 3;
+
+ if (size < (structure->ptr + structure->length)) {
+ esg_container_free(container);
+ return NULL;
+ }
+
+ // Decode structure
+ switch (structure->type) {
+ case 0x01: {
+ switch (structure->id) {
+ case 0x00: {
+ structure->data = (void *) esg_encapsulation_structure_decode(buffer + structure->ptr, structure->length);
+ break;
+ }
+ default: {
+ esg_container_free(container);
+ return NULL;
+ }
+ }
+ break;
+ }
+ case 0x02: {
+ switch (structure->id) {
+ case 0x00: {
+ structure->data = (void *) esg_string_repository_decode(buffer + structure->ptr, structure->length);
+ break;
+ }
+ default: {
+ esg_container_free(container);
+ return NULL;
+ }
+ }
+ break;
+ }
+ case 0x03: {
+ //TODO
+ break;
+ }
+ case 0x04: {
+ //TODO
+ break;
+ }
+ case 0x05: {
+ //TODO
+ break;
+ }
+ case 0xE0: {
+ switch (structure->id) {
+ case 0x00: {
+ structure->data = (void *) esg_data_repository_decode(buffer + structure->ptr, structure->length);
+ break;
+ }
+ default: {
+ esg_container_free(container);
+ return NULL;
+ }
+ }
+ break;
+ }
+ case 0xE1: {
+ switch (structure->id) {
+ case 0xFF: {
+ structure->data = (void *) esg_session_partition_declaration_decode(buffer + structure->ptr, structure->length);
+ break;
+ }
+ default: {
+ esg_container_free(container);
+ return NULL;
+ }
+ }
+ break;
+ }
+ case 0xE2: {
+ switch (structure->id) {
+ case 0x00: {
+ structure->data = (void *) esg_init_message_decode(buffer + structure->ptr, structure->length);
+ break;
+ }
+ default: {
+ esg_container_free(container);
+ return NULL;
+ }
+ }
+ break;
+ }
+ default: {
+ esg_container_free(container);
+ return NULL;
+ }
+ }
+ }
+
+ // Container structure body
+ container->structure_body_ptr = pos;
+ container->structure_body_length = size - pos;
+ container->structure_body = (uint8_t *) malloc(size - pos);
+ memcpy(container->structure_body, buffer + pos, size - pos);
+
+ return container;
+}
+
+void esg_container_free(struct esg_container *container) {
+ struct esg_container_structure *structure;
+ struct esg_container_structure *next_structure;
+
+ if (container == NULL) {
+ return;
+ }
+
+ if (container->header) {
+ for(structure = container->header->structure_list; structure; structure = next_structure) {
+ next_structure = structure->_next;
+ free(structure);
+ }
+
+ free(container->header);
+ }
+
+ if (container->structure_body) {
+ free(container->structure_body);
+ }
+
+ free(container);
+}
diff --git a/lib/libesg/encapsulation/container.h b/lib/libesg/encapsulation/container.h
new file mode 100644
index 0000000..dc54ef2
--- /dev/null
+++ b/lib/libesg/encapsulation/container.h
@@ -0,0 +1,94 @@
+/*
+ * ESG parser
+ *
+ * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr)
+ *
+ * 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
+ */
+
+#ifndef _ESG_ENCAPSULATION_CONTAINER_H
+#define _ESG_ENCAPSULATION_CONTAINER_H 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <stdint.h>
+
+/**
+ * esg_container_structure structure.
+ */
+struct esg_container_structure {
+ uint8_t type;
+ uint8_t id;
+ uint32_t ptr;
+ uint32_t length;
+
+ void *data;
+
+ struct esg_container_structure *_next;
+};
+
+/**
+ * esg_container_header structure.
+ */
+struct esg_container_header {
+ uint8_t num_structures;
+ struct esg_container_structure *structure_list;
+};
+
+/**
+ * esg_container structure
+ */
+struct esg_container {
+ struct esg_container_header *header;
+ uint32_t structure_body_ptr;
+ uint32_t structure_body_length;
+ uint8_t *structure_body;
+};
+
+/**
+ * Process an esg_container.
+ *
+ * @param buffer Binary buffer to decode.
+ * @param size Binary buffer size.
+ * @return Pointer to an esg_container structure, or NULL on error.
+ */
+extern struct esg_container *esg_container_decode(uint8_t *buffer, uint32_t size);
+
+/**
+ * Free an esg_container.
+ *
+ * @param container Pointer to an esg_container structure.
+ */
+extern void esg_container_free(struct esg_container *container);
+
+/**
+ * Convenience iterator for structure_list field of an esg_container_header.
+ *
+ * @param container The esg_container_header pointer.
+ * @param structure Variable holding a pointer to the current esg_container_structure.
+ */
+#define esg_container_header_structure_list_for_each(header, structure) \
+ for ((structure) = (header)->structure_list; \
+ (structure); \
+ (structure) = (structure)->_next)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/lib/libesg/encapsulation/data_repository.c b/lib/libesg/encapsulation/data_repository.c
new file mode 100644
index 0000000..629e5ea
--- /dev/null
+++ b/lib/libesg/encapsulation/data_repository.c
@@ -0,0 +1,53 @@
+/*
+ * ESG parser
+ *
+ * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr)
+ *
+ * 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 <stdlib.h>
+#include <string.h>
+
+#include <libesg/encapsulation/data_repository.h>
+
+struct esg_data_repository *esg_data_repository_decode(uint8_t *buffer, uint32_t size) {
+ struct esg_data_repository *data_repository;
+
+ if ((buffer == NULL) || (size <= 0)) {
+ return NULL;
+ }
+
+ data_repository = (struct esg_data_repository *) malloc(sizeof(struct esg_data_repository));
+ memset(data_repository, 0, sizeof(struct esg_data_repository));
+
+ data_repository->length = size;
+ data_repository->data = (uint8_t *) malloc(size);
+ memcpy(data_repository->data, buffer, size);
+
+ return data_repository;
+}
+
+void esg_data_repository_free(struct esg_data_repository *data_repository) {
+ if (data_repository == NULL) {
+ return;
+ }
+
+ if (data_repository->data) {
+ free(data_repository->data);
+ }
+
+ free(data_repository);
+}
diff --git a/lib/libesg/encapsulation/data_repository.h b/lib/libesg/encapsulation/data_repository.h
new file mode 100644
index 0000000..4c691cf
--- /dev/null
+++ b/lib/libesg/encapsulation/data_repository.h
@@ -0,0 +1,59 @@
+/*
+ * ESG parser
+ *
+ * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr)
+ *
+ * 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
+ */
+
+#ifndef _ESG_ENCAPSULATION_DATA_REPOSITORY_H
+#define _ESG_ENCAPSULATION_DATA_REPOSITORY_H 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <stdint.h>
+
+/**
+ * esg_data_repository structure.
+ */
+struct esg_data_repository {
+ uint32_t length;
+ uint8_t *data;
+};
+
+/**
+ * Process an esg_data_repository.
+ *
+ * @param buffer Binary buffer to decode.
+ * @param size Binary buffer size.
+ * @return Pointer to an esg_data_repository structure, or NULL on error.
+ */
+extern struct esg_data_repository *esg_data_repository_decode(uint8_t *buffer, uint32_t size);
+
+/**
+ * Free an esg_data_repository.
+ *
+ * @param data_repository Pointer to an esg_data_repository structure.
+ */
+extern void esg_data_repository_free(struct esg_data_repository *data_repository);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/lib/libesg/encapsulation/fragment_management_information.c b/lib/libesg/encapsulation/fragment_management_information.c
new file mode 100644
index 0000000..b08265d
--- /dev/null
+++ b/lib/libesg/encapsulation/fragment_management_information.c
@@ -0,0 +1,118 @@
+/*
+ * ESG parser
+ *
+ * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr)
+ *
+ * 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 <stdlib.h>
+#include <string.h>
+
+#include <libesg/encapsulation/fragment_management_information.h>
+
+struct esg_encapsulation_structure *esg_encapsulation_structure_decode(uint8_t *buffer, uint32_t size) {
+ uint32_t pos;
+ struct esg_encapsulation_structure *structure;
+ struct esg_encapsulation_entry *entry;
+ struct esg_encapsulation_entry *last_entry;
+
+ if ((buffer == NULL) || (size <= 2)) {
+ return NULL;
+ }
+
+ pos = 0;
+
+ structure = (struct esg_encapsulation_structure *) malloc(sizeof(struct esg_encapsulation_structure));
+ memset(structure, 0, sizeof(struct esg_encapsulation_structure));
+ structure->entry_list = NULL;
+
+ // Encapsulation header
+ structure->header = (struct esg_encapsulation_header *) malloc(sizeof(struct esg_encapsulation_header));
+ // buffer[pos] reserved
+ structure->header->fragment_reference_format = buffer[pos+1];
+ pos += 2;
+
+ // Encapsulation entry list
+ last_entry = NULL;
+ while (size > pos) {
+ entry = (struct esg_encapsulation_entry *) malloc(sizeof(struct esg_encapsulation_entry));
+ memset(entry, 0, sizeof(struct esg_encapsulation_entry));
+ entry->_next = NULL;
+
+ if (last_entry == NULL) {
+ structure->entry_list = entry;
+ } else {
+ last_entry->_next = entry;
+ }
+ last_entry = entry;
+
+ // Fragment reference
+ switch (structure->header->fragment_reference_format) {
+ case 0x21: {
+ entry->fragment_reference = (struct esg_fragment_reference *) malloc(sizeof(struct esg_fragment_reference));
+ memset(entry->fragment_reference, 0, sizeof(struct esg_fragment_reference));
+
+ entry->fragment_reference->fragment_type = buffer[pos];
+ pos += 1;
+
+ entry->fragment_reference->data_repository_offset = (buffer[pos] << 16) | (buffer[pos+1] << 8) | buffer[pos+2];
+ pos += 3;
+
+ break;
+ }
+ default: {
+ esg_encapsulation_structure_free(structure);
+ return NULL;
+ }
+ }
+
+ // Fragment version & id
+ entry->fragment_version = buffer[pos];
+ pos += 1;
+
+ entry->fragment_id = (buffer[pos] << 16) | (buffer[pos+1] << 8) | buffer[pos+2];
+ pos += 3;
+ }
+
+ return structure;
+}
+
+void esg_encapsulation_structure_free(struct esg_encapsulation_structure *structure) {
+ struct esg_encapsulation_entry *entry;
+ struct esg_encapsulation_entry *next_entry;
+
+ if (structure == NULL) {
+ return;
+ }
+
+ if (structure->header) {
+ free(structure->header);
+ }
+
+ if (structure->entry_list) {
+ for(entry = structure->entry_list; entry; entry = next_entry) {
+ next_entry = entry->_next;
+ if (entry->fragment_reference) {
+ free(entry->fragment_reference);
+ }
+ free(entry);
+ }
+
+ free(structure->entry_list);
+ }
+
+ free(structure);
+}
diff --git a/lib/libesg/encapsulation/fragment_management_information.h b/lib/libesg/encapsulation/fragment_management_information.h
new file mode 100644
index 0000000..04050b5
--- /dev/null
+++ b/lib/libesg/encapsulation/fragment_management_information.h
@@ -0,0 +1,96 @@
+/*
+ * ESG parser
+ *
+ * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr)
+ *
+ * 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
+ */
+
+#ifndef _ESG_ENCAPSULATION_FRAGMENT_MANAGEMENT_INFORMATION_H
+#define _ESG_ENCAPSULATION_FRAGMENT_MANAGEMENT_INFORMATION_H 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <stdint.h>
+
+/**
+ * esg_encapsulation_header structure.
+ */
+struct esg_encapsulation_header {
+ uint8_t fragment_reference_format;
+};
+
+/**
+ * esg_fragment_reference structure.
+ */
+struct esg_fragment_reference {
+ uint8_t fragment_type;
+ uint32_t data_repository_offset;
+};
+
+/**
+ * esg_encapsulation_entry structure.
+ */
+struct esg_encapsulation_entry {
+ struct esg_fragment_reference *fragment_reference;
+ uint8_t fragment_version;
+ uint32_t fragment_id;
+
+ struct esg_encapsulation_entry *_next;
+};
+
+/**
+ * esg_encapsulation_structure structure.
+ */
+struct esg_encapsulation_structure {
+ struct esg_encapsulation_header *header;
+ struct esg_encapsulation_entry *entry_list;
+};
+
+/**
+ * Process an esg_encapsulation_structure.
+ *
+ * @param buffer Binary buffer to decode.
+ * @param size Binary buffer size.
+ * @return Pointer to an esg_encapsulation_structure structure, or NULL on error.
+ */
+extern struct esg_encapsulation_structure *esg_encapsulation_structure_decode(uint8_t *buffer, uint32_t size);
+
+/**
+ * Free an esg_encapsulation_structure.
+ *
+ * @param container Pointer to an esg_container structure.
+ */
+extern void esg_encapsulation_structure_free(struct esg_encapsulation_structure *structure);
+
+/**
+ * Convenience iterator for entry_list field of an esg_encapsulation_structure.
+ *
+ * @param structure The esg_encapsulation_structure pointer.
+ * @param entry Variable holding a pointer to the current esg_encapsulation_entry.
+ */
+#define esg_encapsulation_structure_entry_list_for_each(structure, entry) \
+ for ((entry) = (structure)->entry_list; \
+ (entry); \
+ (entry) = (entry)->_next)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/lib/libesg/encapsulation/string_repository.c b/lib/libesg/encapsulation/string_repository.c
new file mode 100644
index 0000000..3b88742
--- /dev/null
+++ b/lib/libesg/encapsulation/string_repository.c
@@ -0,0 +1,54 @@
+/*
+ * ESG parser
+ *
+ * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr)
+ *
+ * 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 <stdlib.h>
+#include <string.h>
+
+#include <libesg/encapsulation/string_repository.h>
+
+struct esg_string_repository *esg_string_repository_decode(uint8_t *buffer, uint32_t size) {
+ struct esg_string_repository *string_repository;
+
+ if ((buffer == NULL) || (size <= 1)) {
+ return NULL;
+ }
+
+ string_repository = (struct esg_string_repository *) malloc(sizeof(struct esg_string_repository));
+ memset(string_repository, 0, sizeof(struct esg_string_repository));
+
+ string_repository->encoding_type = buffer[0];
+ string_repository->length = size-1;
+ string_repository->data = (uint8_t *) malloc(size-1);
+ memcpy(string_repository->data, buffer+1, size-1);
+
+ return string_repository;
+}
+
+void esg_string_repository_free(struct esg_string_repository *string_repository) {
+ if (string_repository == NULL) {
+ return;
+ }
+
+ if (string_repository->data) {
+ free(string_repository->data);
+ }
+
+ free(string_repository);
+}
diff --git a/lib/libesg/encapsulation/string_repository.h b/lib/libesg/encapsulation/string_repository.h
new file mode 100644
index 0000000..0cf64c2
--- /dev/null
+++ b/lib/libesg/encapsulation/string_repository.h
@@ -0,0 +1,60 @@
+/*
+ * ESG parser
+ *
+ * Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr)
+ *
+ * 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
+ */
+
+#ifndef _ESG_ENCAPSULATION_STRING_REPOSITORY_H
+#define _ESG_ENCAPSULATION_STRING_REPOSITORY_H 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <stdint.h>
+
+/**
+ * esg_string_repository structure.
+ */
+struct esg_string_repository {
+ uint8_t encoding_type;
+ uint32_t length;
+ uint8_t *data;
+};
+
+/**
+ * Process an esg_string_repository.
+ *
+ * @param buffer Binary buffer to decode.
+ * @param size Binary buffer size.
+ * @return Pointer to an esg_string_repository structure, or NULL on error.
+ */
+extern struct esg_string_repository *esg_string_repository_decode(uint8_t *buffer, uint32_t size);
+
+/**
+ * Free an esg_string_repository.
+ *
+ * @param data_repository Pointer to an esg_string_repository structure.
+ */
+extern void esg_string_repository_free(struct esg_string_repository *string_repository);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif