ABuffer: reset members when memory allocation fails.

ABuffer::ABuffer(size_t capacity)

    : mMediaBufferBase(NULL),

      mData(malloc(capacity)),

      mCapacity(capacity),

      mRangeOffset(0),

      mRangeLength(capacity),

      mInt32Data(0),

      mOwnsData(true) {

    mData = malloc(capacity);

    if (mData == NULL) {

        mCapacity = 0;

        mRangeLength = 0;

    } else {

        mCapacity = capacity;

        mRangeLength = capacity;

    }

}

ABuffer::ABuffer(void *data, size_t capacity)

sp<ABuffer> ABuffer::CreateAsCopy(const void *data, size_t capacity)

{

    sp<ABuffer> res = new ABuffer(capacity);

    if (res->base() == NULL) {

        return NULL;

    }

    memcpy(res->data(), data, capacity);

    return res;

}