commit e09fd9e819c23dc90bca68375645e15544861330
author The Android Open Source Project <initial-contribution@android.com> Wed Dec 17 18:05:43 2008 -0800
committer The Android Open Source Project <initial-contribution@android.com> Wed Dec 17 18:05:43 2008 -0800
tree 9a9fdadd1301625f875a3c126c986c79e3363ac4
parent 7c1b96a165f970a09ed239bb4fb3f1b0d8f2a407

Code drop from //branches/cupcake/...@124589

libs/audioflinger/AudioResamplerCubic.cpp

diff --git a/libs/audioflinger/AudioResamplerCubic.cpp b/libs/audioflinger/AudioResamplerCubic.cpp
index 4f437bf..1d247bd 100644
--- a/libs/audioflinger/AudioResamplerCubic.cpp
+++ b/libs/audioflinger/AudioResamplerCubic.cpp
@@ -60,9 +60,11 @@
     uint32_t phaseIncrement = mPhaseIncrement;
     size_t outputIndex = 0;
     size_t outputSampleCount = outFrameCount * 2;
-    
+    size_t inFrameCount = (outFrameCount*mInSampleRate)/mSampleRate;
+
     // fetch first buffer
-    if (mBuffer.raw == NULL) {
+    if (mBuffer.frameCount == 0) {
+        mBuffer.frameCount = inFrameCount;
         provider->getNextBuffer(&mBuffer);
         if (mBuffer.raw == NULL)
             return;
@@ -79,7 +81,7 @@
         out[outputIndex++] += vl * interp(&left, x);
         out[outputIndex++] += vr * interp(&right, x);
         // out[outputIndex++] += vr * in[inputIndex*2];
-        
+
         // increment phase
         phaseFraction += phaseIncrement;
         uint32_t indexIncrement = (phaseFraction >> kNumPhaseBits);
@@ -92,6 +94,7 @@
             if (inputIndex == mBuffer.frameCount) {
                 inputIndex = 0;
                 provider->releaseBuffer(&mBuffer);
+                mBuffer.frameCount = inFrameCount;
                 provider->getNextBuffer(&mBuffer);
                 if (mBuffer.raw == NULL)
                     goto save_state;  // ugly, but efficient
@@ -122,9 +125,11 @@
     uint32_t phaseIncrement = mPhaseIncrement;
     size_t outputIndex = 0;
     size_t outputSampleCount = outFrameCount * 2;
-    
+    size_t inFrameCount = (outFrameCount*mInSampleRate)/mSampleRate;
+
     // fetch first buffer
-    if (mBuffer.raw == NULL) {
+    if (mBuffer.frameCount == 0) {
+        mBuffer.frameCount = inFrameCount;
         provider->getNextBuffer(&mBuffer);
         if (mBuffer.raw == NULL)
             return;
@@ -141,7 +146,7 @@
         sample = interp(&left, x);
         out[outputIndex++] += vl * sample;
         out[outputIndex++] += vr * sample;
-        
+
         // increment phase
         phaseFraction += phaseIncrement;
         uint32_t indexIncrement = (phaseFraction >> kNumPhaseBits);
@@ -154,6 +159,7 @@
             if (inputIndex == mBuffer.frameCount) {
                 inputIndex = 0;
                 provider->releaseBuffer(&mBuffer);
+                mBuffer.frameCount = inFrameCount;
                 provider->getNextBuffer(&mBuffer);
                 if (mBuffer.raw == NULL)
                     goto save_state;  // ugly, but efficient