From eca1762d92c43f2b7836941d14e453d4c0f9ed99 Mon Sep 17 00:00:00 2001
From: Andreas Huber <andih@google.com>
Date: Tue, 23 Aug 2011 10:21:34 -0700
Subject: We were accidentally sending out an output buffer before the final
 port settings change

Change-Id: I4de0d3c377bb12e59524ed370ab3ed0b9a9b70a6
related-to-bug: 5122512
---
 media/libstagefright/codecs/aacdec/SoftAAC.cpp | 44 +++++++++++++++-----------
 1 file changed, 25 insertions(+), 19 deletions(-)

(limited to 'media')

diff --git a/media/libstagefright/codecs/aacdec/SoftAAC.cpp b/media/libstagefright/codecs/aacdec/SoftAAC.cpp
index f0a330f..2abdb56 100644
--- a/media/libstagefright/codecs/aacdec/SoftAAC.cpp
+++ b/media/libstagefright/codecs/aacdec/SoftAAC.cpp
@@ -378,23 +378,35 @@ void SoftAAC::onQueueFilled(OMX_U32 portIndex) {
             // fall through
         }
 
-        if (mUpsamplingFactor == 2) {
-            if (mConfig->desiredChannels == 1) {
-                memcpy(&mConfig->pOutputBuffer[1024],
-                       &mConfig->pOutputBuffer[2048],
-                       numOutBytes * 2);
+        if (decoderErr == MP4AUDEC_SUCCESS || mNumSamplesOutput > 0) {
+            // We'll only output data if we successfully decoded it or
+            // we've previously decoded valid data, in the latter case
+            // (decode failed) we'll output a silent frame.
+
+            if (mUpsamplingFactor == 2) {
+                if (mConfig->desiredChannels == 1) {
+                    memcpy(&mConfig->pOutputBuffer[1024],
+                           &mConfig->pOutputBuffer[2048],
+                           numOutBytes * 2);
+                }
+                numOutBytes *= 2;
             }
-            numOutBytes *= 2;
-        }
 
-        outHeader->nFilledLen = numOutBytes;
-        outHeader->nFlags = 0;
+            outHeader->nFilledLen = numOutBytes;
+            outHeader->nFlags = 0;
 
-        outHeader->nTimeStamp =
-            mAnchorTimeUs
-                + (mNumSamplesOutput * 1000000ll) / mConfig->samplingRate;
+            outHeader->nTimeStamp =
+                mAnchorTimeUs
+                    + (mNumSamplesOutput * 1000000ll) / mConfig->samplingRate;
 
-        mNumSamplesOutput += mConfig->frameLength * mUpsamplingFactor;
+            mNumSamplesOutput += mConfig->frameLength * mUpsamplingFactor;
+
+            outInfo->mOwnedByUs = false;
+            outQueue.erase(outQueue.begin());
+            outInfo = NULL;
+            notifyFillBufferDone(outHeader);
+            outHeader = NULL;
+        }
 
         if (inHeader->nFilledLen == 0) {
             inInfo->mOwnedByUs = false;
@@ -404,12 +416,6 @@ void SoftAAC::onQueueFilled(OMX_U32 portIndex) {
             inHeader = NULL;
         }
 
-        outInfo->mOwnedByUs = false;
-        outQueue.erase(outQueue.begin());
-        outInfo = NULL;
-        notifyFillBufferDone(outHeader);
-        outHeader = NULL;
-
         if (decoderErr == MP4AUDEC_SUCCESS) {
             ++mInputBufferCount;
         }
-- 
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