1 files changed, 18 insertions, 5 deletions
diff --git a/alsa-binding/Alsa-ApiHat.h b/alsa-binding/Alsa-ApiHat.h
index eaef9c7..6987448 100644
--- a/alsa-binding/Alsa-ApiHat.h
+++ b/alsa-binding/Alsa-ApiHat.h
@@ -38,6 +38,9 @@
   #define CONTROL_MAXPATH_LEN 255
 #endif
 
+#define NO_CARD_SELECTED      -1
+#define NO_DEVICE_SELECTED    -1
+
 typedef enum {
   QUERY_QUIET   =0,
   QUERY_COMPACT =1,
@@ -46,15 +49,25 @@ typedef enum {
 } queryModeE;
 
 typedef enum {
-    INFO_BY_DEVID,
-    INFO_BY_PATH
-} InfoGetT;
-
-typedef enum {
     ACTION_SET,
     ACTION_GET
 } ActionSetGetT;
 
+// structure to store card
+typedef struct {
+    int cardNb;
+    char *cardPath;
+    char *cardId;
+    char *cardShortName;
+    char *cardLongName;
+    char *cardDriver;
+    char *cardMixerName;
+    char *cardComponents;
+    int playbackDeviceNb;
+    char *playbackDeviceId;
+    char *playbackDeviceName;
+} queryCardInfo;
+
 // generic structure to pass parsed query values
 typedef struct {
   const char *devid;