Add LV2 extension to notify host about midi-bank/pgm state.

1 files changed, 25 insertions, 0 deletions

diff --git a/libs/ardour/ardour/lv2_extensions.h b/libs/ardour/ardour/lv2_extensions.h
index 26432b54d7..027eb0391b 100644
--- a/libs/ardour/ardour/lv2_extensions.h
+++ b/libs/ardour/ardour/lv2_extensions.h
@@ -228,4 +228,29 @@ typedef struct {
 /**
    @}
 */
+
+/**
+   @defgroup bankpatch
+
+   @{
+*/
+
+
+#define LV2_BANKPATCH_URI "http://ardour.org/lv2/bankpatch"
+#define LV2_BANKPATCH_PREFIX LV2_BANKPATCH_URI "#"
+#define LV2_BANKPATCH__notify LV2_BANKPATCH_PREFIX "notify"
+
+typedef void* LV2_BankPatch_Handle;
+
+/** a LV2 Feature provided by the Host to the plugin */
+typedef struct {
+	/** Opaque host data */
+	LV2_BankPatch_Handle handle;
+	/** Info from plugin's run(), notify host that bank/program changed */
+	void (*notify)(LV2_BankPatch_Handle handle, uint8_t channel, uint32_t bank, uint8_t pgm);
+} LV2_BankPatch;
+
+/**
+   @}
+*/
 #endif