From 4ea3964c3caaa387c0ab4e744ecc7df461a00114 Mon Sep 17 00:00:00 2001
From: Jef Driesen <jefdriesen@users.sourceforge.net>
Date: Mon, 29 Nov 2010 21:57:55 +0100
Subject: [PATCH] Implement the new field api for the Seiko devices.

---
 src/cressi_edy_parser.c | 43 ++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 42 insertions(+), 1 deletion(-)

diff --git a/src/cressi_edy_parser.c b/src/cressi_edy_parser.c
index da7d2bf..3205de6 100644
--- a/src/cressi_edy_parser.c
+++ b/src/cressi_edy_parser.c
@@ -35,6 +35,7 @@ struct cressi_edy_parser_t {
 
 static parser_status_t cressi_edy_parser_set_data (parser_t *abstract, const unsigned char *data, unsigned int size);
 static parser_status_t cressi_edy_parser_get_datetime (parser_t *abstract, dc_datetime_t *datetime);
+static parser_status_t cressi_edy_parser_get_field (parser_t *abstract, parser_field_type_t type, unsigned int flags, void *value);
 static parser_status_t cressi_edy_parser_samples_foreach (parser_t *abstract, sample_callback_t callback, void *userdata);
 static parser_status_t cressi_edy_parser_destroy (parser_t *abstract);
 
@@ -42,7 +43,7 @@ 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_get_field, /* fields */
 	cressi_edy_parser_samples_foreach, /* samples_foreach */
 	cressi_edy_parser_destroy /* destroy */
 };
@@ -127,6 +128,46 @@ cressi_edy_parser_get_datetime (parser_t *abstract, dc_datetime_t *datetime)
 }
 
 
+static parser_status_t
+cressi_edy_parser_get_field (parser_t *abstract, parser_field_type_t type, unsigned int flags, void *value)
+{
+	cressi_edy_parser_t *parser = (cressi_edy_parser_t *) abstract;
+
+	if (abstract->size < 32)
+		return PARSER_STATUS_ERROR;
+
+	const unsigned char *p = abstract->data;
+
+	gasmix_t *gasmix = (gasmix_t *) value;
+
+	if (value) {
+		switch (type) {
+		case FIELD_TYPE_DIVETIME:
+			if (parser->model == 0x08)
+				*((unsigned int *) value) = bcd2dec (p[0x0C] & 0x0F) * 60 + bcd2dec (p[0x0D]);
+			else
+				*((unsigned int *) value) = (bcd2dec (p[0x0C] & 0x0F) * 100 + bcd2dec (p[0x0D])) * 60;
+			break;
+		case FIELD_TYPE_MAXDEPTH:
+			*((double *) value) = (bcd2dec (p[0x02] & 0x0F) * 100 + bcd2dec (p[0x03])) / 10.0;
+			break;
+		case FIELD_TYPE_GASMIX_COUNT:
+			*((unsigned int *) value) = 3;
+			break;
+		case FIELD_TYPE_GASMIX:
+			gasmix->helium = 0.0;
+			gasmix->oxygen = bcd2dec (p[0x17 - flags]) / 100.0;
+			gasmix->nitrogen = 1.0 - gasmix->oxygen - gasmix->helium;
+			break;
+		default:
+			return PARSER_STATUS_UNSUPPORTED;
+		}
+	}
+
+	return PARSER_STATUS_SUCCESS;
+}
+
+
 static parser_status_t
 cressi_edy_parser_samples_foreach (parser_t *abstract, sample_callback_t callback, void *userdata)
 {