From b44c9d2bdc0d5b9cb03254022a58e017b516e9e6 Mon Sep 17 00:00:00 2001
From: James Dong <jdong@google.com>
Date: Thu, 2 Feb 2012 18:04:02 -0800
Subject: Don't call virtual functions in the destructor for audio and camera
 source classes

Change-Id: Ia74ffc1c0cbd7971697f5e3c476e340ec5c7727a
---
 include/media/stagefright/AudioSource.h           |  3 ++-
 include/media/stagefright/CameraSource.h          |  5 +++--
 include/media/stagefright/CameraSourceTimeLapse.h |  3 ---
 media/libstagefright/AudioSource.cpp              |  4 ++--
 media/libstagefright/CameraSource.cpp             |  8 ++++----
 media/libstagefright/CameraSourceTimeLapse.cpp    | 13 ++++---------
 6 files changed, 15 insertions(+), 21 deletions(-)

diff --git a/include/media/stagefright/AudioSource.h b/include/media/stagefright/AudioSource.h
index 2427e2f..79437bf 100644
--- a/include/media/stagefright/AudioSource.h
+++ b/include/media/stagefright/AudioSource.h
@@ -40,7 +40,7 @@ struct AudioSource : public MediaSource, public MediaBufferObserver {
     status_t initCheck() const;
 
     virtual status_t start(MetaData *params = NULL);
-    virtual status_t stop();
+    virtual status_t stop() { return reset(); }
     virtual sp<MetaData> getFormat();
 
     // Returns the maximum amplitude since last call.
@@ -97,6 +97,7 @@ private:
 
     void releaseQueuedFrames_l();
     void waitOutstandingEncodingFrames_l();
+    status_t reset();
 
     AudioSource(const AudioSource &);
     AudioSource &operator=(const AudioSource &);
diff --git a/include/media/stagefright/CameraSource.h b/include/media/stagefright/CameraSource.h
index 446720b..5a35358 100644
--- a/include/media/stagefright/CameraSource.h
+++ b/include/media/stagefright/CameraSource.h
@@ -79,7 +79,7 @@ public:
     virtual ~CameraSource();
 
     virtual status_t start(MetaData *params = NULL);
-    virtual status_t stop();
+    virtual status_t stop() { return reset(); }
     virtual status_t read(
             MediaBuffer **buffer, const ReadOptions *options = NULL);
 
@@ -163,7 +163,6 @@ protected:
                  bool storeMetaDataInVideoBuffers);
 
     virtual void startCameraRecording();
-    virtual void stopCameraRecording();
     virtual void releaseRecordingFrame(const sp<IMemory>& frame);
 
     // Returns true if need to skip the current frame.
@@ -220,7 +219,9 @@ private:
     status_t checkFrameRate(const CameraParameters& params,
                     int32_t frameRate);
 
+    void stopCameraRecording();
     void releaseCamera();
+    status_t reset();
 
     CameraSource(const CameraSource &);
     CameraSource &operator=(const CameraSource &);
diff --git a/include/media/stagefright/CameraSourceTimeLapse.h b/include/media/stagefright/CameraSourceTimeLapse.h
index b060691..0936da2 100644
--- a/include/media/stagefright/CameraSourceTimeLapse.h
+++ b/include/media/stagefright/CameraSourceTimeLapse.h
@@ -121,9 +121,6 @@ private:
     // Wrapper over CameraSource::read() to implement quick stop.
     virtual status_t read(MediaBuffer **buffer, const ReadOptions *options = NULL);
 
-    // For video camera case, just stops the camera's video recording.
-    virtual void stopCameraRecording();
-
     // mSkipCurrentFrame is set to true in dataCallbackTimestamp() if the current
     // frame needs to be skipped and this function just returns the value of mSkipCurrentFrame.
     virtual bool skipCurrentFrame(int64_t timestampUs);
diff --git a/media/libstagefright/AudioSource.cpp b/media/libstagefright/AudioSource.cpp
index 8bdb7c5..fef2a00 100644
--- a/media/libstagefright/AudioSource.cpp
+++ b/media/libstagefright/AudioSource.cpp
@@ -72,7 +72,7 @@ AudioSource::AudioSource(
 
 AudioSource::~AudioSource() {
     if (mStarted) {
-        stop();
+        reset();
     }
 
     delete mRecord;
@@ -130,7 +130,7 @@ void AudioSource::waitOutstandingEncodingFrames_l() {
     }
 }
 
-status_t AudioSource::stop() {
+status_t AudioSource::reset() {
     Mutex::Autolock autoLock(mLock);
     if (!mStarted) {
         return UNKNOWN_ERROR;
diff --git a/media/libstagefright/CameraSource.cpp b/media/libstagefright/CameraSource.cpp
index 1850c9c..228659c 100755
--- a/media/libstagefright/CameraSource.cpp
+++ b/media/libstagefright/CameraSource.cpp
@@ -548,7 +548,7 @@ status_t CameraSource::initWithCameraAccess(
 
 CameraSource::~CameraSource() {
     if (mStarted) {
-        stop();
+        reset();
     } else if (mInitCheck == OK) {
         // Camera is initialized but because start() is never called,
         // the lock on Camera is never released(). This makes sure
@@ -632,8 +632,8 @@ void CameraSource::releaseCamera() {
     mCameraFlags = 0;
 }
 
-status_t CameraSource::stop() {
-    ALOGD("stop: E");
+status_t CameraSource::reset() {
+    ALOGD("reset: E");
     Mutex::Autolock autoLock(mLock);
     mStarted = false;
     mFrameAvailableCondition.signal();
@@ -670,7 +670,7 @@ status_t CameraSource::stop() {
     }
 
     CHECK_EQ(mNumFramesReceived, mNumFramesEncoded + mNumFramesDropped);
-    ALOGD("stop: X");
+    ALOGD("reset: X");
     return OK;
 }
 
diff --git a/media/libstagefright/CameraSourceTimeLapse.cpp b/media/libstagefright/CameraSourceTimeLapse.cpp
index 263ab50..83d67b9 100644
--- a/media/libstagefright/CameraSourceTimeLapse.cpp
+++ b/media/libstagefright/CameraSourceTimeLapse.cpp
@@ -87,6 +87,10 @@ CameraSourceTimeLapse::CameraSourceTimeLapse(
 }
 
 CameraSourceTimeLapse::~CameraSourceTimeLapse() {
+    if (mLastReadBufferCopy) {
+        mLastReadBufferCopy->release();
+        mLastReadBufferCopy = NULL;
+    }
 }
 
 void CameraSourceTimeLapse::startQuickReadReturns() {
@@ -204,15 +208,6 @@ status_t CameraSourceTimeLapse::read(
     }
 }
 
-void CameraSourceTimeLapse::stopCameraRecording() {
-    ALOGV("stopCameraRecording");
-    CameraSource::stopCameraRecording();
-    if (mLastReadBufferCopy) {
-        mLastReadBufferCopy->release();
-        mLastReadBufferCopy = NULL;
-    }
-}
-
 sp<IMemory> CameraSourceTimeLapse::createIMemoryCopy(
         const sp<IMemory> &source_data) {
 
-- 
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