Nitpick configuration code in a few DSP filters to fix some bugs

Most importantly is surround shouldn't operate in mono mode. Have it
watch and (de)activate itself on relevant format changes as it should.

Other changes to better handle buffer allocation failure.

PBE was set internally at 100 by default; SBZ.

Change-Id: I328e0b674e56751a255eae817d7892d685796b06

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/rbcodec/dsp/afr.c b/lib/rbcodec/dsp/afr.c
index b266e4b549..d9b6ef97a4 100644
--- a/lib/rbcodec/dsp/afr.c
+++ b/lib/rbcodec/dsp/afr.c
@@ -77,9 +77,10 @@ void dsp_afr_enable(int var)
     if (var == afr_strength)
         return; /* No setting change */
 
-    bool was_enabled = afr_strength > 0;
     afr_strength = var;
 
+    struct dsp_config *dsp = dsp_get_config(CODEC_IDX_AUDIO);
+    bool was_enabled = dsp_proc_enabled(dsp, DSP_PROC_AFR);
     bool now_enabled = var > 0;
 
     if (was_enabled == now_enabled && !now_enabled)
@@ -88,7 +89,6 @@ void dsp_afr_enable(int var)
     /* If changing status, enable or disable it; if already enabled push
        additional DSP_PROC_INIT messages with value = 1 to force-update the
        filters */
-    struct dsp_config *dsp = dsp_get_config(CODEC_IDX_AUDIO);
     dsp_proc_enable(dsp, DSP_PROC_AFR, now_enabled);
 }