Sonivox: sanity check numSamples.

Bug: 26366256
Change-Id: I066888c25035ea4c60c88f316db4508dc4dab6bc

Author: Wei Jia

arm-wt-22k/lib_src/eas_wtengine.c

@@ -32,6 +32,8 @@
  * includes
  *------------------------------------
 */
+#include "log/log.h"
+
 #include "eas_types.h"
 #include "eas_math.h"
 #include "eas_audioconst.h"
@@ -88,6 +90,10 @@ void WT_VoiceGain (S_WT_VOICE *pWTVoice, S_WT_INT_FRAME *pWTIntFrame)
 
     /* initialize some local variables */
     numSamples = pWTIntFrame->numSamples;
+    if (numSamples <= 0) {
+        ALOGE("b/26366256");
+        return;
+    }
     pMixBuffer = pWTIntFrame->pMixBuffer;
     pInputBuffer = pWTIntFrame->pAudioBuffer;
 
@@ -182,6 +188,10 @@ void WT_Interpolate (S_WT_VOICE *pWTVoice, S_WT_INT_FRAME *pWTIntFrame)
 
     /* initialize some local variables */
     numSamples = pWTIntFrame->numSamples;
+    if (numSamples <= 0) {
+        ALOGE("b/26366256");
+        return;
+    }
     pOutputBuffer = pWTIntFrame->pAudioBuffer;
 
     loopEnd = (const EAS_SAMPLE*) pWTVoice->loopEnd + 1;
@@ -275,6 +285,10 @@ void WT_InterpolateNoLoop (S_WT_VOICE *pWTVoice, S_WT_INT_FRAME *pWTIntFrame)
 
     /* initialize some local variables */
     numSamples = pWTIntFrame->numSamples;
+    if (numSamples <= 0) {
+        ALOGE("b/26366256");
+        return;
+    }
     pOutputBuffer = pWTIntFrame->pAudioBuffer;
 
     phaseInc = pWTIntFrame->frame.phaseIncrement;
@@ -363,6 +377,10 @@ void WT_VoiceFilter (S_FILTER_CONTROL *pFilter, S_WT_INT_FRAME *pWTIntFrame)
 
     /* initialize some local variables */
     numSamples = pWTIntFrame->numSamples;
+    if (numSamples <= 0) {
+        ALOGE("b/26366256");
+        return;
+    }
     pAudioBuffer = pWTIntFrame->pAudioBuffer;
 
     z1 = pFilter->z1;
@@ -426,6 +444,10 @@ void WT_VoiceFilter (S_FILTER_CONTROL *pFilter, S_WT_INT_FRAME *pWTIntFrame)
 
     /* initialize some local variables */
     numSamples = pWTIntFrame->numSamples;
+    if (numSamples <= 0) {
+        ALOGE("b/26366256");
+        return;
+    }
     pOutputBuffer = pWTIntFrame->pAudioBuffer;
     phaseInc = pWTIntFrame->frame.phaseIncrement;
 
@@ -569,6 +591,10 @@ void WT_InterpolateMono (S_WT_VOICE *pWTVoice, S_WT_INT_FRAME *pWTIntFrame)
     EAS_I8 *pLoopStart;
 
     numSamples = pWTIntFrame->numSamples;
+    if (numSamples <= 0) {
+        ALOGE("b/26366256");
+        return;
+    }
     pMixBuffer = pWTIntFrame->pMixBuffer;
 
     /* calculate gain increment */

arm-wt-22k/lib_src/eas_wtsynth.c

@@ -28,6 +28,8 @@
 */
 
 // includes
+#include "log/log.h"
+
 #include "eas_data.h"
 #include "eas_report.h"
 #include "eas_host.h"
@@ -467,6 +469,10 @@ EAS_BOOL WT_CheckSampleEnd (S_WT_VOICE *pWTVoice, S_WT_INT_FRAME *pWTIntFrame, E
         } else {
             pWTIntFrame->numSamples = numSamples;
         }
+        if (pWTIntFrame->numSamples < 0) {
+            ALOGE("b/26366256");
+            pWTIntFrame->numSamples = 0;
+        }
 
         /* sound will be done this frame */
         done = EAS_TRUE;