am b72726ba: Merge "camera1: Ensure MemoryHeap buffers are mmapped before copying." into lmp-dev

    }

    previewBuffer = mPreviewBuffer;

    memcpy(previewBuffer->base(), (uint8_t *)heap->base() + offset, size);

    void* previewBufferBase = previewBuffer->base();

    void* heapBase = heap->base();

    if (heapBase == MAP_FAILED) {

        ALOGE("%s: Failed to mmap heap for preview frame.", __FUNCTION__);

        mLock.unlock();

        return;

    } else if (previewBufferBase == MAP_FAILED) {

        ALOGE("%s: Failed to mmap preview buffer for preview frame.", __FUNCTION__);

        mLock.unlock();

        return;

    }

    memcpy(previewBufferBase, (uint8_t *) heapBase + offset, size);

    sp<MemoryBase> frame = new MemoryBase(previewBuffer, 0, size);

    if (frame == 0) {