Tweaks to mediaformatshaper

-- parameterize the % boost if QP is desired but not present
-- parameterize the upper bounds for where shaping is phased out
-- tuning default bits-per-pixel for AVC

Bug: 183211971
Test: video quality test scripts
Change-Id: I2e83c574e766606c50d7ed5dc26c49ba92ecb2a4
diff --git a/media/libmediaformatshaper/CodecProperties.h b/media/libmediaformatshaper/CodecProperties.h
index ff7051f..98ab99e 100644
--- a/media/libmediaformatshaper/CodecProperties.h
+++ b/media/libmediaformatshaper/CodecProperties.h
@@ -82,6 +82,14 @@
     void setSupportsQp(bool supported) { mSupportsQp = supported;}
     bool supportsQp() { return mSupportsQp;}
 
+    // defines our range of operation -- multiplier on the floor bitrate
+    double getPhaseOut() { return mPhaseOut; }
+    void setPhaseOut(double overageMultiplier);
+
+    // how much (0.20 = +20%) do we add if Qp is requested but unsupported
+    double getMissingQpBoost() {return mMissingQpBoost; }
+    void setMissingQpBoost(double boost);
+
     int  supportedApi();
 
     // a codec is not usable until it has been registered with its
@@ -98,6 +106,11 @@
     bool mSupportsQp = false;
     double mBpp = 0.0;
 
+    // target bitrates above floor * mPhaseOut are left untouched
+    double mPhaseOut = 1.75;
+    // 20% bump if QP is configured but it is unavailable
+    double mMissingQpBoost = 0.20;
+
     // allow different target bits-per-pixel based on resolution
     // similar to codec 'performance points'
     // uses 'next largest' (by pixel count) point as minimum bpp