Fix volume problems with insert revert

- Use a constant input level to the reverb engine and implement volume control in the
insert reverb. This avoids the volume spikes when an effect that was inserted after
the reverb is disabled or removed.
- Fix clicks (one silent buffer) at the end of the reverb disable period.
- Modified volume management in audioflinger so that the volume ramp is also done by
the insert effect if present when the track is paused (avoids clicks).
- Increased room level for all presets.

Also fixed problems with output stage session (-1):
- effect bundle wrapper was not designed to support session -1
- the permission check in audioflinger for using session -1 failed due to a wrong usage of
getCallingPid()

Change-Id: Id1ff51327263364bf71d3f2668fa5cde4311d84f

1 files changed, 2 insertions, 0 deletions

diff --git a/media/libeffects/lvm/wrapper/Bundle/EffectBundle.h b/media/libeffects/lvm/wrapper/Bundle/EffectBundle.h
index 35e1114..91963af 100644
--- a/media/libeffects/lvm/wrapper/Bundle/EffectBundle.h
+++ b/media/libeffects/lvm/wrapper/Bundle/EffectBundle.h
@@ -21,6 +21,7 @@
 #include <media/EffectBassBoostApi.h>
 #include <media/EffectVirtualizerApi.h>
 #include <LVM.h>
+#include <limits.h>
 
 #if __cplusplus
 extern "C" {
@@ -30,6 +31,7 @@ extern "C" {
 #define MAX_NUM_BANDS              5
 #define MAX_CALL_SIZE              256
 #define LVM_MAX_SESSIONS           32
+#define LVM_UNUSED_SESSION         INT_MAX
 #define BASS_BOOST_CUP_LOAD_ARM9E  150    // Expressed in 0.1 MIPS
 #define VIRTUALIZER_CUP_LOAD_ARM9E 120    // Expressed in 0.1 MIPS
 #define EQUALIZER_CUP_LOAD_ARM9E   220    // Expressed in 0.1 MIPS