vdagent: volume synchronization from client.

Include the capability of volume sync to set volume or mute to default
sink-input/source-output of guest.

3 files changed, 33 insertions, 0 deletions

diff --git a/src/vdagent.c b/src/vdagent.c
index 9d130d5..348dfbd 100644
--- a/src/vdagent.c
+++ b/src/vdagent.c
@@ -40,6 +40,7 @@
 #include "udscs.h"
 #include "vdagentd-proto.h"
 #include "vdagentd-proto-strings.h"
+#include "vdagent-audio.h"
 #include "vdagent-x11.h"
 #include "vdagent-file-xfers.h"
 
@@ -109,6 +110,16 @@ void daemon_read_complete(struct udscs_connection **connp,
         }
         free(data);
         break;
+    case VDAGENTD_AUDIO_VOLUME_SYNC: {
+        VDAgentAudioVolumeSync *avs = (VDAgentAudioVolumeSync *)data;
+        if (avs->is_playback) {
+            vdagent_audio_playback_sync(avs->mute, avs->nchannels, avs->volume);
+        } else {
+            vdagent_audio_record_sync(avs->mute, avs->nchannels, avs->volume);
+        }
+        free(data);
+        break;
+    }
     case VDAGENTD_FILE_XFER_DATA:
         if (vdagent_file_xfers != NULL) {
             vdagent_file_xfers_data(vdagent_file_xfers,
diff --git a/src/vdagentd-proto.h b/src/vdagentd-proto.h
index 25e6a36..0dbaaea 100644
--- a/src/vdagentd-proto.h
+++ b/src/vdagentd-proto.h
@@ -36,6 +36,7 @@ enum {
     VDAGENTD_CLIPBOARD_DATA,    /* arg1: sel, arg 2: type, data: data */
     VDAGENTD_CLIPBOARD_RELEASE, /* arg1: selection */
     VDAGENTD_VERSION,           /* daemon -> client, data: version string */
+    VDAGENTD_AUDIO_VOLUME_SYNC,
     VDAGENTD_FILE_XFER_START,
     VDAGENTD_FILE_XFER_STATUS,
     VDAGENTD_FILE_XFER_DATA,
diff --git a/src/vdagentd.c b/src/vdagentd.c
index b5c7d14..14c5be1 100644
--- a/src/vdagentd.c
+++ b/src/vdagentd.c
@@ -101,6 +101,7 @@ static void send_capabilities(struct vdagent_virtio_port *vport,
     VD_AGENT_SET_CAPABILITY(caps->caps, VD_AGENT_CAP_SPARSE_MONITORS_CONFIG);
     VD_AGENT_SET_CAPABILITY(caps->caps, VD_AGENT_CAP_GUEST_LINEEND_LF);
     VD_AGENT_SET_CAPABILITY(caps->caps, VD_AGENT_CAP_MAX_CLIPBOARD);
+    VD_AGENT_SET_CAPABILITY(caps->caps, VD_AGENT_CAP_AUDIO_VOLUME_SYNC);
 
     vdagent_virtio_port_write(vport, VDP_CLIENT_PORT,
                               VD_AGENT_ANNOUNCE_CAPABILITIES, 0,
@@ -156,6 +157,19 @@ static void do_client_monitors(struct vdagent_virtio_port *vport, int port_nr,
                               (uint8_t *)&reply, sizeof(reply));
 }
 
+static void do_client_volume_sync(struct vdagent_virtio_port *vport, int port_nr,
+    VDAgentMessage *message_header,
+    VDAgentAudioVolumeSync *avs)
+{
+    if (active_session_conn == NULL) {
+        syslog(LOG_DEBUG, "No active session - Can't volume-sync");
+        return;
+    }
+
+    udscs_write(active_session_conn, VDAGENTD_AUDIO_VOLUME_SYNC, 0, 0,
+                (uint8_t *)avs, message_header->size);
+}
+
 static void do_client_capabilities(struct vdagent_virtio_port *vport,
     VDAgentMessage *message_header,
     VDAgentAnnounceCapabilities *caps)
@@ -379,6 +393,13 @@ int virtio_port_read_complete(
         syslog(LOG_DEBUG, "Set max clipboard: %d", msg->max);
         max_clipboard = msg->max;
         break;
+    case VD_AGENT_AUDIO_VOLUME_SYNC:
+        if (message_header->size < sizeof(VDAgentAudioVolumeSync))
+            goto size_error;
+
+        do_client_volume_sync(vport, port_nr, message_header,
+                (VDAgentAudioVolumeSync *)data);
+        break;
     default:
         syslog(LOG_WARNING, "unknown message type %d, ignoring",
                message_header->type);