diff --git a/src/cressi_edy_parser.c b/src/cressi_edy_parser.c
index 8c881df..da7d2bf 100644
--- a/src/cressi_edy_parser.c
+++ b/src/cressi_edy_parser.c
@@ -42,6 +42,7 @@ static const parser_backend_t cressi_edy_parser_backend = {
 	PARSER_TYPE_CRESSI_EDY,
 	cressi_edy_parser_set_data, /* set_data */
 	cressi_edy_parser_get_datetime, /* datetime */
+	NULL, /* fields */
 	cressi_edy_parser_samples_foreach, /* samples_foreach */
 	cressi_edy_parser_destroy /* destroy */
 };
diff --git a/src/hw_ostc_parser.c b/src/hw_ostc_parser.c
index 488b200..65599fc 100644
--- a/src/hw_ostc_parser.c
+++ b/src/hw_ostc_parser.c
@@ -48,6 +48,7 @@ static const parser_backend_t hw_ostc_parser_backend = {
 	PARSER_TYPE_HW_OSTC,
 	hw_ostc_parser_set_data, /* set_data */
 	hw_ostc_parser_get_datetime, /* datetime */
+	NULL, /* fields */
 	hw_ostc_parser_samples_foreach, /* samples_foreach */
 	hw_ostc_parser_destroy /* destroy */
 };
diff --git a/src/libdivecomputer.symbols b/src/libdivecomputer.symbols
index be3d1a8..93cb1d9 100644
--- a/src/libdivecomputer.symbols
+++ b/src/libdivecomputer.symbols
@@ -19,6 +19,7 @@ dc_datetime_gmtime
 parser_get_type
 parser_set_data
 parser_get_datetime
+parser_get_field
 parser_samples_foreach
 parser_destroy
 
diff --git a/src/mares_iconhd_parser.c b/src/mares_iconhd_parser.c
index 94eb4a8..c5af473 100644
--- a/src/mares_iconhd_parser.c
+++ b/src/mares_iconhd_parser.c
@@ -41,6 +41,7 @@ static const parser_backend_t mares_iconhd_parser_backend = {
 	PARSER_TYPE_MARES_ICONHD,
 	mares_iconhd_parser_set_data, /* set_data */
 	mares_iconhd_parser_get_datetime, /* datetime */
+	NULL, /* fields */
 	mares_iconhd_parser_samples_foreach, /* samples_foreach */
 	mares_iconhd_parser_destroy /* destroy */
 };
diff --git a/src/mares_nemo_parser.c b/src/mares_nemo_parser.c
index 208454d..2bccbc3 100644
--- a/src/mares_nemo_parser.c
+++ b/src/mares_nemo_parser.c
@@ -52,6 +52,7 @@ static const parser_backend_t mares_nemo_parser_backend = {
 	PARSER_TYPE_MARES_NEMO,
 	mares_nemo_parser_set_data, /* set_data */
 	mares_nemo_parser_get_datetime, /* datetime */
+	NULL, /* fields */
 	mares_nemo_parser_samples_foreach, /* samples_foreach */
 	mares_nemo_parser_destroy /* destroy */
 };
diff --git a/src/oceanic_atom2_parser.c b/src/oceanic_atom2_parser.c
index be946be..46c29b1 100644
--- a/src/oceanic_atom2_parser.c
+++ b/src/oceanic_atom2_parser.c
@@ -57,6 +57,7 @@ static const parser_backend_t oceanic_atom2_parser_backend = {
 	PARSER_TYPE_OCEANIC_ATOM2,
 	oceanic_atom2_parser_set_data, /* set_data */
 	oceanic_atom2_parser_get_datetime, /* datetime */
+	NULL, /* fields */
 	oceanic_atom2_parser_samples_foreach, /* samples_foreach */
 	oceanic_atom2_parser_destroy /* destroy */
 };
diff --git a/src/oceanic_veo250_parser.c b/src/oceanic_veo250_parser.c
index d6f06f3..5217249 100644
--- a/src/oceanic_veo250_parser.c
+++ b/src/oceanic_veo250_parser.c
@@ -44,6 +44,7 @@ static const parser_backend_t oceanic_veo250_parser_backend = {
 	PARSER_TYPE_OCEANIC_VEO250,
 	oceanic_veo250_parser_set_data, /* set_data */
 	oceanic_veo250_parser_get_datetime, /* datetime */
+	NULL, /* fields */
 	oceanic_veo250_parser_samples_foreach, /* samples_foreach */
 	oceanic_veo250_parser_destroy /* destroy */
 };
diff --git a/src/oceanic_vtpro_parser.c b/src/oceanic_vtpro_parser.c
index 78f9f49..306fc2a 100644
--- a/src/oceanic_vtpro_parser.c
+++ b/src/oceanic_vtpro_parser.c
@@ -43,6 +43,7 @@ static const parser_backend_t oceanic_vtpro_parser_backend = {
 	PARSER_TYPE_OCEANIC_VTPRO,
 	oceanic_vtpro_parser_set_data, /* set_data */
 	oceanic_vtpro_parser_get_datetime, /* datetime */
+	NULL, /* fields */
 	oceanic_vtpro_parser_samples_foreach, /* samples_foreach */
 	oceanic_vtpro_parser_destroy /* destroy */
 };
diff --git a/src/parser-private.h b/src/parser-private.h
index 6eea8b4..86c70d8 100644
--- a/src/parser-private.h
+++ b/src/parser-private.h
@@ -46,6 +46,8 @@ struct parser_backend_t {
 
 	parser_status_t (*datetime) (parser_t *parser, dc_datetime_t *datetime);
 
+	parser_status_t (*field) (parser_t *parser, parser_field_type_t type, unsigned int flags, void *value);
+
 	parser_status_t (*samples_foreach) (parser_t *parser, sample_callback_t callback, void *userdata);
 
 	parser_status_t (*destroy) (parser_t *parser);
diff --git a/src/parser.c b/src/parser.c
index 8304b7a..96e80a4 100644
--- a/src/parser.c
+++ b/src/parser.c
@@ -71,6 +71,18 @@ parser_get_datetime (parser_t *parser, dc_datetime_t *datetime)
 	return parser->backend->datetime (parser, datetime);
 }
 
+parser_status_t
+parser_get_field (parser_t *parser, parser_field_type_t type, unsigned int flags, void *value)
+{
+	if (parser == NULL)
+		return PARSER_STATUS_UNSUPPORTED;
+
+	if (parser->backend->field == NULL)
+		return PARSER_STATUS_UNSUPPORTED;
+
+	return parser->backend->field (parser, type, flags, value);
+}
+
 
 parser_status_t
 parser_samples_foreach (parser_t *parser, sample_callback_t callback, void *userdata)
diff --git a/src/parser.h b/src/parser.h
index b264007..2b58bac 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -68,6 +68,14 @@ typedef enum parser_sample_type_t {
 	SAMPLE_TYPE_VENDOR
 } parser_sample_type_t;
 
+typedef enum parser_field_type_t {
+	FIELD_TYPE_DIVETIME,
+	FIELD_TYPE_MAXDEPTH,
+	FIELD_TYPE_AVGDEPTH,
+	FIELD_TYPE_GASMIX_COUNT,
+	FIELD_TYPE_GASMIX
+} parser_field_type_t;
+
 typedef enum parser_sample_event_t {
 	SAMPLE_EVENT_NONE,
 	SAMPLE_EVENT_DECOSTOP,
@@ -111,6 +119,12 @@ typedef enum parser_sample_vendor_t {
 	SAMPLE_VENDOR_OCEANIC_ATOM2
 } parser_sample_vendor_t;
 
+typedef struct gasmix_t {
+	double helium;
+	double oxygen;
+	double nitrogen;
+} gasmix_t;
+
 typedef union parser_sample_value_t {
 	unsigned int time;
 	double depth;
@@ -148,6 +162,9 @@ parser_set_data (parser_t *parser, const unsigned char *data, unsigned int size)
 parser_status_t
 parser_get_datetime (parser_t *parser, dc_datetime_t *datetime);
 
+parser_status_t
+parser_get_field (parser_t *parser, parser_field_type_t type, unsigned int flags, void *value);
+
 parser_status_t
 parser_samples_foreach (parser_t *parser, sample_callback_t callback, void *userdata);
 
diff --git a/src/reefnet_sensus_parser.c b/src/reefnet_sensus_parser.c
index 2604161..4d2351a 100644
--- a/src/reefnet_sensus_parser.c
+++ b/src/reefnet_sensus_parser.c
@@ -50,6 +50,7 @@ static const parser_backend_t reefnet_sensus_parser_backend = {
 	PARSER_TYPE_REEFNET_SENSUS,
 	reefnet_sensus_parser_set_data, /* set_data */
 	reefnet_sensus_parser_get_datetime, /* datetime */
+	NULL, /* fields */
 	reefnet_sensus_parser_samples_foreach, /* samples_foreach */
 	reefnet_sensus_parser_destroy /* destroy */
 };
diff --git a/src/reefnet_sensuspro_parser.c b/src/reefnet_sensuspro_parser.c
index ca7d05b..27e2cb1 100644
--- a/src/reefnet_sensuspro_parser.c
+++ b/src/reefnet_sensuspro_parser.c
@@ -49,6 +49,7 @@ static const parser_backend_t reefnet_sensuspro_parser_backend = {
 	PARSER_TYPE_REEFNET_SENSUSPRO,
 	reefnet_sensuspro_parser_set_data, /* set_data */
 	reefnet_sensuspro_parser_get_datetime, /* datetime */
+	NULL, /* fields */
 	reefnet_sensuspro_parser_samples_foreach, /* samples_foreach */
 	reefnet_sensuspro_parser_destroy /* destroy */
 };
diff --git a/src/reefnet_sensusultra_parser.c b/src/reefnet_sensusultra_parser.c
index f23aec1..9ad164d 100644
--- a/src/reefnet_sensusultra_parser.c
+++ b/src/reefnet_sensusultra_parser.c
@@ -49,6 +49,7 @@ static const parser_backend_t reefnet_sensusultra_parser_backend = {
 	PARSER_TYPE_REEFNET_SENSUSULTRA,
 	reefnet_sensusultra_parser_set_data, /* set_data */
 	reefnet_sensusultra_parser_get_datetime, /* datetime */
+	NULL, /* fields */
 	reefnet_sensusultra_parser_samples_foreach, /* samples_foreach */
 	reefnet_sensusultra_parser_destroy /* destroy */
 };
diff --git a/src/suunto_d9_parser.c b/src/suunto_d9_parser.c
index a379c46..3c3f783 100644
--- a/src/suunto_d9_parser.c
+++ b/src/suunto_d9_parser.c
@@ -45,6 +45,7 @@ static const parser_backend_t suunto_d9_parser_backend = {
 	PARSER_TYPE_SUUNTO_D9,
 	suunto_d9_parser_set_data, /* set_data */
 	suunto_d9_parser_get_datetime, /* datetime */
+	NULL, /* fields */
 	suunto_d9_parser_samples_foreach, /* samples_foreach */
 	suunto_d9_parser_destroy /* destroy */
 };
diff --git a/src/suunto_eon_parser.c b/src/suunto_eon_parser.c
index 1747ab3..06717d0 100644
--- a/src/suunto_eon_parser.c
+++ b/src/suunto_eon_parser.c
@@ -43,6 +43,7 @@ static const parser_backend_t suunto_eon_parser_backend = {
 	PARSER_TYPE_SUUNTO_EON,
 	suunto_eon_parser_set_data, /* set_data */
 	suunto_eon_parser_get_datetime, /* datetime */
+	NULL, /* fields */
 	suunto_eon_parser_samples_foreach, /* samples_foreach */
 	suunto_eon_parser_destroy /* destroy */
 };
diff --git a/src/suunto_solution_parser.c b/src/suunto_solution_parser.c
index 9dd607d..41c04fd 100644
--- a/src/suunto_solution_parser.c
+++ b/src/suunto_solution_parser.c
@@ -40,6 +40,7 @@ static const parser_backend_t suunto_solution_parser_backend = {
 	PARSER_TYPE_SUUNTO_SOLUTION,
 	suunto_solution_parser_set_data, /* set_data */
 	NULL, /* datetime */
+	NULL, /* fields */
 	suunto_solution_parser_samples_foreach, /* samples_foreach */
 	suunto_solution_parser_destroy /* destroy */
 };
diff --git a/src/suunto_vyper_parser.c b/src/suunto_vyper_parser.c
index 53077bd..ddbf309 100644
--- a/src/suunto_vyper_parser.c
+++ b/src/suunto_vyper_parser.c
@@ -41,6 +41,7 @@ static const parser_backend_t suunto_vyper_parser_backend = {
 	PARSER_TYPE_SUUNTO_VYPER,
 	suunto_vyper_parser_set_data, /* set_data */
 	suunto_vyper_parser_get_datetime, /* datetime */
+	NULL, /* fields */
 	suunto_vyper_parser_samples_foreach, /* samples_foreach */
 	suunto_vyper_parser_destroy /* destroy */
 };
diff --git a/src/uwatec_memomouse_parser.c b/src/uwatec_memomouse_parser.c
index 940fa3d..89af203 100644
--- a/src/uwatec_memomouse_parser.c
+++ b/src/uwatec_memomouse_parser.c
@@ -43,6 +43,7 @@ static const parser_backend_t uwatec_memomouse_parser_backend = {
 	PARSER_TYPE_UWATEC_MEMOMOUSE,
 	uwatec_memomouse_parser_set_data, /* set_data */
 	uwatec_memomouse_parser_get_datetime, /* datetime */
+	NULL, /* fields */
 	uwatec_memomouse_parser_samples_foreach, /* samples_foreach */
 	uwatec_memomouse_parser_destroy /* destroy */
 };
diff --git a/src/uwatec_smart_parser.c b/src/uwatec_smart_parser.c
index 58384b6..5849292 100644
--- a/src/uwatec_smart_parser.c
+++ b/src/uwatec_smart_parser.c
@@ -49,6 +49,7 @@ static const parser_backend_t uwatec_smart_parser_backend = {
 	PARSER_TYPE_UWATEC_SMART,
 	uwatec_smart_parser_set_data, /* set_data */
 	uwatec_smart_parser_get_datetime, /* datetime */
+	NULL, /* fields */
 	uwatec_smart_parser_samples_foreach, /* samples_foreach */
 	uwatec_smart_parser_destroy /* destroy */
 };