add volume synchronization to protocol

With VD_AGENT_AUDIO_VOLUME_SYNC the client can send volume and mute
values to be set in the guest for input or output devices.
Currently this is done once after the agent send its capabilities.

Related: https://bugzilla.redhat.com/show_bug.cgi?id=1012868

1 files changed, 9 insertions, 0 deletions

diff --git a/spice/vd_agent.h b/spice/vd_agent.h
index 7464661..7732eca 100644
--- a/spice/vd_agent.h
+++ b/spice/vd_agent.h
@@ -77,6 +77,7 @@ enum {
     VD_AGENT_FILE_XFER_DATA,
     VD_AGENT_CLIENT_DISCONNECTED,
     VD_AGENT_MAX_CLIPBOARD,
+    VD_AGENT_AUDIO_VOLUME_SYNC,
     VD_AGENT_END_MESSAGE,
 };
 
@@ -206,6 +207,13 @@ typedef struct SPICE_ATTR_PACKED VDAgentMaxClipboard {
     int32_t max;
 } VDAgentMaxClipboard;
 
+typedef struct SPICE_ATTR_PACKED VDAgentAudioVolumeSync {
+    uint8_t is_playback;
+    uint8_t mute;
+    uint8_t nchannels;
+    uint16_t volume[0];
+} VDAgentAudioVolumeSync;
+
 enum {
     VD_AGENT_CAP_MOUSE_STATE = 0,
     VD_AGENT_CAP_MONITORS_CONFIG,
@@ -218,6 +226,7 @@ enum {
     VD_AGENT_CAP_GUEST_LINEEND_LF,
     VD_AGENT_CAP_GUEST_LINEEND_CRLF,
     VD_AGENT_CAP_MAX_CLIPBOARD,
+    VD_AGENT_CAP_AUDIO_VOLUME_SYNC,
     VD_AGENT_END_CAP,
 };