[spice-gtk PATCH 1/5] audio: set volume/mute in record/playback channels

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In order to allow backend audio to update channel's volume/mute values
when necessary.
---
 gtk/channel-playback.c | 30 ++++++++++++++++++++++++------
 gtk/channel-record.c   | 30 ++++++++++++++++++++++++------
 2 files changed, 48 insertions(+), 12 deletions(-)

diff --git a/gtk/channel-playback.c b/gtk/channel-playback.c
index ae8a75d..7fa4386 100644
--- a/gtk/channel-playback.c
+++ b/gtk/channel-playback.c
@@ -84,6 +84,8 @@ enum {
 
 static guint signals[SPICE_PLAYBACK_LAST_SIGNAL];
 static void channel_set_handlers(SpiceChannelClass *klass);
+static void playback_set_prop_volume(SpicePlaybackChannel *channel,
+                                     guint8 nchannels, const guint16 *volume);
 
 /* ------------------------------------------------------------------ */
 
@@ -153,11 +155,18 @@ static void spice_playback_channel_set_property(GObject      *gobject,
                                                 const GValue *value,
                                                 GParamSpec   *pspec)
 {
+    SpicePlaybackChannel *channel = SPICE_PLAYBACK_CHANNEL(gobject);
+    SpicePlaybackChannelPrivate *c = channel->priv;
+
     switch (prop_id) {
-    case PROP_VOLUME:
+    case PROP_VOLUME: {
+        const guint16 *volume = g_value_get_pointer(value);
+        playback_set_prop_volume (channel, c->nchannels, volume);
         /* TODO: request guest volume change */
         break;
+    }
     case PROP_MUTE:
+        c->mute = g_value_get_boolean(value);
         /* TODO: request guest mute change */
         break;
     default:
@@ -396,7 +405,6 @@ static void playback_handle_stop(SpiceChannel *channel, SpiceMsgIn *in)
 /* coroutine context */
 static void playback_handle_set_volume(SpiceChannel *channel, SpiceMsgIn *in)
 {
-    SpicePlaybackChannelPrivate *c = SPICE_PLAYBACK_CHANNEL(channel)->priv;
     SpiceMsgAudioVolume *vol = spice_msg_in_parsed(in);
 
     if (vol->nchannels == 0) {
@@ -404,10 +412,8 @@ static void playback_handle_set_volume(SpiceChannel *channel, SpiceMsgIn *in)
         return;
     }
 
-    g_free(c->volume);
-    c->nchannels = vol->nchannels;
-    c->volume = g_new(guint16, c->nchannels);
-    memcpy(c->volume, vol->volume, sizeof(guint16) * c->nchannels);
+    playback_set_prop_volume (SPICE_PLAYBACK_CHANNEL(channel),
+                              vol->nchannels, vol->volume);
     g_coroutine_object_notify(G_OBJECT(channel), "volume");
 }
 
@@ -486,3 +492,15 @@ void spice_playback_channel_sync_latency(SpicePlaybackChannel *channel)
     SPICE_DEBUG("%s: notify latency update %u", __FUNCTION__, channel->priv->min_latency);
     g_coroutine_object_notify(G_OBJECT(SPICE_CHANNEL(channel)), "min-latency");
 }
+
+static void
+playback_set_prop_volume(SpicePlaybackChannel *channel, guint8 nchannels, const guint16 *volume)
+{
+    SpicePlaybackChannelPrivate *c = channel->priv;
+    if (c->nchannels != nchannels) {
+        g_free(c->volume);
+        c->nchannels = nchannels;
+        c->volume = g_new(guint16, nchannels);
+    }
+    memcpy(c->volume, volume, sizeof(guint16) * nchannels);
+}
diff --git a/gtk/channel-record.c b/gtk/channel-record.c
index ac71999..99d9946 100644
--- a/gtk/channel-record.c
+++ b/gtk/channel-record.c
@@ -84,6 +84,8 @@ static guint signals[SPICE_RECORD_LAST_SIGNAL];
 
 static void channel_set_handlers(SpiceChannelClass *klass);
 
+static void record_set_prop_volume(SpiceRecordChannel *channel, guint8 nchannels, const guint16 *volume);
+
 /* ------------------------------------------------------------------ */
 
 static void spice_record_channel_reset_capabilities(SpiceChannel *channel)
@@ -149,11 +151,18 @@ static void spice_record_channel_set_property(GObject      *gobject,
                                               const GValue *value,
                                               GParamSpec   *pspec)
 {
+    SpiceRecordChannel *channel = SPICE_RECORD_CHANNEL(gobject);
+    SpiceRecordChannelPrivate *c = channel->priv;
+
     switch (prop_id) {
-    case PROP_VOLUME:
+    case PROP_VOLUME: {
+        const guint16 *volume = g_value_get_pointer(value);
+        record_set_prop_volume(channel, c->nchannels, volume);
         /* TODO: request guest volume change */
         break;
+    }
     case PROP_MUTE:
+        c->mute = g_value_get_boolean(value);
         /* TODO: request guest mute change */
         break;
     default:
@@ -437,7 +446,6 @@ static void record_handle_stop(SpiceChannel *channel, SpiceMsgIn *in)
 /* coroutine context */
 static void record_handle_set_volume(SpiceChannel *channel, SpiceMsgIn *in)
 {
-    SpiceRecordChannelPrivate *c = SPICE_RECORD_CHANNEL(channel)->priv;
     SpiceMsgAudioVolume *vol = spice_msg_in_parsed(in);
 
     if (vol->nchannels == 0) {
@@ -445,10 +453,8 @@ static void record_handle_set_volume(SpiceChannel *channel, SpiceMsgIn *in)
         return;
     }
 
-    g_free(c->volume);
-    c->nchannels = vol->nchannels;
-    c->volume = g_new(guint16, c->nchannels);
-    memcpy(c->volume, vol->volume, sizeof(guint16) * c->nchannels);
+    record_set_prop_volume(SPICE_RECORD_CHANNEL(channel),
+                           vol->nchannels, vol->volume);
     g_coroutine_object_notify(G_OBJECT(channel), "volume");
 }
 
@@ -473,3 +479,15 @@ static void channel_set_handlers(SpiceChannelClass *klass)
 
     spice_channel_set_handlers(klass, handlers, G_N_ELEMENTS(handlers));
 }
+
+static void
+record_set_prop_volume(SpiceRecordChannel *channel, guint8 nchannels, const guint16 *volume)
+{
+    SpiceRecordChannelPrivate *c = channel->priv;
+    if (c->nchannels != nchannels) {
+        g_free(c->volume);
+        c->nchannels = nchannels;
+        c->volume = g_new(guint16, nchannels);
+    }
+    memcpy(c->volume, volume, sizeof(guint16) * nchannels);
+}
-- 
2.1.0

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