commit 6b6a736ec71c692c165952fe653a7766075e94bb
author Chia-chi Yeh <chiachi@android.com> Mon Nov 01 10:56:45 2010 +0800
committer Chia-chi Yeh <chiachi@android.com> Mon Nov 01 10:56:45 2010 +0800
tree 2000c38c45f45551faa3a78de14f7f7f387b0f80
parent 64c3bdea8cba454d4404baded584ea0f0611b3ee

Visualizer: Fix the conversion from 8-bit sample to 16-bit sample.

Change-Id: Ie6d77b0f61a37333e05cdcdb6ef29d6f6c345a9d

media/libmedia/Visualizer.cpp

diff --git a/media/libmedia/Visualizer.cpp b/media/libmedia/Visualizer.cpp
index 68f2e9b..a660429 100644
--- a/media/libmedia/Visualizer.cpp
+++ b/media/libmedia/Visualizer.cpp
@@ -209,8 +209,8 @@
     int32_t nonzero = 0;
 
     for (uint32_t i = 0; i < mCaptureSize; i += 2) {
-        workspace[i >> 1] = (waveform[i] ^ 0x80) << 23;
-        workspace[i >> 1] |= (waveform[i + 1] ^ 0x80) << 7;
+        workspace[i >> 1] =
+                ((waveform[i] ^ 0x80) << 24) | ((waveform[i + 1] ^ 0x80) << 8);
         nonzero |= workspace[i >> 1];
     }
 
@@ -219,8 +219,8 @@
     }
 
     for (uint32_t i = 0; i < mCaptureSize; i += 2) {
-        fft[i] = workspace[i >> 1] >> 23;
-        fft[i + 1] = workspace[i >> 1] >> 7;
+        fft[i] = workspace[i >> 1] >> 24;
+        fft[i + 1] = workspace[i >> 1] >> 8;
     }
 
     return NO_ERROR;