commit 49605e8ab171a2b1f474645d632d3982f5f7b8e6
author Lajos Molnar <lajos@google.com> Wed Jul 01 12:06:40 2015 -0700
committer Lajos Molnar <lajos@google.com> Wed Jul 01 12:08:07 2015 -0700
tree 003d3960bddc796b438873a4d41c0c02b0cf6eee
parent 2065710591ebb59b76df8b34866d53d3ae022c2b

stagefright: fix deadlock and NPE in GraphicBufferSource

Bug: 22202388
Change-Id: I04f2f783ecc0e0c50adf16a666f6d7ab4221e285

media/libstagefright/omx/GraphicBufferSource.cpp

diff --git a/media/libstagefright/omx/GraphicBufferSource.cpp b/media/libstagefright/omx/GraphicBufferSource.cpp
index 19f0a37..a424819 100644
--- a/media/libstagefright/omx/GraphicBufferSource.cpp
+++ b/media/libstagefright/omx/GraphicBufferSource.cpp
@@ -111,6 +111,7 @@
         uint32_t bufferWidth,
         uint32_t bufferHeight,
         uint32_t bufferCount,
+        uint32_t consumerUsage,
         const sp<IGraphicBufferConsumer> &consumer) :
     mInitCheck(UNKNOWN_ERROR),
     mNodeInstance(nodeInstance),
@@ -154,16 +155,10 @@
         BufferQueue::createBufferQueue(&mProducer, &mConsumer);
         mConsumer->setConsumerName(name);
 
-        // query consumer usage bits from encoder, but always add HW_VIDEO_ENCODER
+        // use consumer usage bits queried from encoder, but always add HW_VIDEO_ENCODER
         // for backward compatibility.
-        uint32_t usageBits;
-        status_t err = mNodeInstance->getParameter(
-                (OMX_INDEXTYPE)OMX_IndexParamConsumerUsageBits, &usageBits, sizeof(usageBits));
-        if (err != OK) {
-            usageBits = 0;
-        }
-        usageBits |= GRALLOC_USAGE_HW_VIDEO_ENCODER;
-        mConsumer->setConsumerUsageBits(usageBits);
+        consumerUsage |= GRALLOC_USAGE_HW_VIDEO_ENCODER;
+        mConsumer->setConsumerUsageBits(consumerUsage);
 
         mInitCheck = mConsumer->setMaxAcquiredBufferCount(bufferCount);
         if (mInitCheck != NO_ERROR) {

media/libstagefright/omx/GraphicBufferSource.h

diff --git a/media/libstagefright/omx/GraphicBufferSource.h b/media/libstagefright/omx/GraphicBufferSource.h
index 3f64088..2f929d9 100644
--- a/media/libstagefright/omx/GraphicBufferSource.h
+++ b/media/libstagefright/omx/GraphicBufferSource.h
@@ -55,6 +55,7 @@
             uint32_t bufferWidth,
             uint32_t bufferHeight,
             uint32_t bufferCount,
+            uint32_t consumerUsage,
             const sp<IGraphicBufferConsumer> &consumer = NULL
     );
 

media/libstagefright/omx/OMXNodeInstance.cpp

diff --git a/media/libstagefright/omx/OMXNodeInstance.cpp b/media/libstagefright/omx/OMXNodeInstance.cpp
index 95549a4..9f1c5d8 100644
--- a/media/libstagefright/omx/OMXNodeInstance.cpp
+++ b/media/libstagefright/omx/OMXNodeInstance.cpp
@@ -834,7 +834,8 @@
     }
 
     CLOG_BUFFER(updateGraphicBufferInMeta, "%s:%u, %#x := %p",
-            portString(portIndex), portIndex, buffer, graphicBuffer->handle);
+            portString(portIndex), portIndex, buffer,
+            graphicBuffer == NULL ? NULL : graphicBuffer->handle);
     return OK;
 }
 
@@ -885,10 +886,18 @@
         return INVALID_OPERATION;
     }
 
+    uint32_t usageBits;
+    oerr = OMX_GetParameter(
+            mHandle, (OMX_INDEXTYPE)OMX_IndexParamConsumerUsageBits, &usageBits);
+    if (oerr != OMX_ErrorNone) {
+        usageBits = 0;
+    }
+
     sp<GraphicBufferSource> bufferSource = new GraphicBufferSource(this,
             def.format.video.nFrameWidth,
             def.format.video.nFrameHeight,
             def.nBufferCountActual,
+            usageBits,
             bufferConsumer);
 
     if ((err = bufferSource->initCheck()) != OK) {