Hosted PCM: Rework auto-muting code a bit

     * If AUDIOHW_MUTE_ON_PAUSE, no meaningful change
     * Unconditionally unmute on playback start
     * xduoox3ii:  Mute on sample rate change
     * rocker/xduoo:  Stay muted after startup

    This avoids the nasty "pop" on startup, without doing
    the full mute-on-pause stuff that causes unacceptable
    dropouts on the X3ii.

Change-Id: I2e3ee0bb8094e288f37a0acada86a80016ce5cac

1 files changed, 8 insertions, 0 deletions

diff --git a/firmware/export/xduoolinux_codec.h b/firmware/export/xduoolinux_codec.h
index a46976d386..09609d477c 100644
--- a/firmware/export/xduoolinux_codec.h
+++ b/firmware/export/xduoolinux_codec.h
@@ -6,6 +6,14 @@ AUDIOHW_SETTING(VOLUME, "dB", 0, 1, -127,  0, -30)
 AUDIOHW_SETTING(FILTER_ROLL_OFF, "", 0, 1, 0, 4, 0)
 #endif
 
+// We want this, but the codec takes over a second to unmute!
+//#define AUDIOHW_MUTE_ON_PAUSE
+
+#if defined(XDUOO_X3II)
+/* The AK4490 glitches when switching sample rates */
+#define AUDIOHW_MUTE_ON_SRATE_CHANGE
+#endif
+
 void audiohw_mute(int mute);
 void xduoo_set_output(int ps);
 int xduoo_get_outputs(void);