Refactor hal to remove cpuConsumer from drivers

This CL should minimize build breaks due to
BufferQueue changes in the future.

Change-Id: I565a6eae5cc25603741fef32f2cfcb31a32eb757
diff --git a/rsGrallocConsumer.cpp b/rsGrallocConsumer.cpp
new file mode 100644
index 0000000..e3bd9d4
--- /dev/null
+++ b/rsGrallocConsumer.cpp
@@ -0,0 +1,187 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define ATRACE_TAG ATRACE_TAG_RS
+
+#include "rsContext.h"
+#include "rsAllocation.h"
+#include "rsAdapter.h"
+#include "rs_hal.h"
+
+#include <cutils/compiler.h>
+#include <utils/Log.h>
+#include "rsGrallocConsumer.h"
+#include <ui/GraphicBuffer.h>
+
+
+namespace android {
+namespace renderscript {
+
+GrallocConsumer::GrallocConsumer(Allocation *a, const sp<IGraphicBufferConsumer>& bq) :
+    ConsumerBase(bq, true)
+{
+    mAlloc = a;
+    mConsumer->setConsumerUsageBits(GRALLOC_USAGE_SW_READ_OFTEN);
+    mConsumer->setMaxAcquiredBufferCount(2);
+
+    uint32_t y = a->mHal.drvState.lod[0].dimY;
+    if (y < 1) y = 1;
+    mConsumer->setDefaultBufferSize(a->mHal.drvState.lod[0].dimX, y);
+
+    //mBufferQueue->setDefaultBufferFormat(defaultFormat);
+    //mBufferQueue->setConsumerName(name);
+}
+
+GrallocConsumer::~GrallocConsumer() {
+    // ConsumerBase destructor does all the work.
+}
+
+
+
+status_t GrallocConsumer::lockNextBuffer() {
+    Mutex::Autolock _l(mMutex);
+    status_t err;
+
+    if (mAcquiredBuffer.mSlot != BufferQueue::INVALID_BUFFER_SLOT) {
+        err = releaseAcquiredBufferLocked();
+        if (err) {
+            return err;
+        }
+    }
+
+    BufferQueue::BufferItem b;
+
+    err = acquireBufferLocked(&b, 0);
+    if (err != OK) {
+        if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
+            return BAD_VALUE;
+        } else {
+            ALOGE("Error acquiring buffer: %s (%d)", strerror(err), err);
+            return err;
+        }
+    }
+
+    int buf = b.mBuf;
+
+    if (b.mFence.get()) {
+        err = b.mFence->waitForever("GrallocConsumer::lockNextBuffer");
+        if (err != OK) {
+            ALOGE("Failed to wait for fence of acquired buffer: %s (%d)",
+                    strerror(-err), err);
+            return err;
+        }
+    }
+
+    void *bufferPointer = NULL;
+    android_ycbcr ycbcr = android_ycbcr();
+
+    if (mSlots[buf].mGraphicBuffer->getPixelFormat() ==
+            HAL_PIXEL_FORMAT_YCbCr_420_888) {
+        err = mSlots[buf].mGraphicBuffer->lockYCbCr(
+            GraphicBuffer::USAGE_SW_READ_OFTEN,
+            b.mCrop,
+            &ycbcr);
+
+        if (err != OK) {
+            ALOGE("Unable to lock YCbCr buffer for CPU reading: %s (%d)",
+                    strerror(-err), err);
+            return err;
+        }
+        bufferPointer = ycbcr.y;
+    } else {
+        err = mSlots[buf].mGraphicBuffer->lock(
+            GraphicBuffer::USAGE_SW_READ_OFTEN,
+            b.mCrop,
+            &bufferPointer);
+
+        if (err != OK) {
+            ALOGE("Unable to lock buffer for CPU reading: %s (%d)",
+                    strerror(-err), err);
+            return err;
+        }
+    }
+
+    size_t lockedIdx = 0;
+    assert(mAcquiredBuffer.mSlot == BufferQueue::INVALID_BUFFER_SLOT);
+
+    mAcquiredBuffer.mSlot = buf;
+    mAcquiredBuffer.mBufferPointer = bufferPointer;
+    mAcquiredBuffer.mGraphicBuffer = mSlots[buf].mGraphicBuffer;
+
+    mAlloc->mHal.drvState.lod[0].mallocPtr = reinterpret_cast<uint8_t*>(bufferPointer);
+    mAlloc->mHal.drvState.lod[0].stride = mSlots[buf].mGraphicBuffer->getStride() *
+            mAlloc->mHal.state.type->getElementSizeBytes();
+    mAlloc->mHal.state.nativeBuffer = mAcquiredBuffer.mGraphicBuffer->getNativeBuffer();
+    mAlloc->mHal.state.timestamp = b.mTimestamp;
+
+    assert(mAlloc->mHal.drvState.lod[0].dimX ==
+           mSlots[buf].mGraphicBuffer->getWidth());
+    assert(mAlloc->mHal.drvState.lod[0].dimY ==
+           mSlots[buf].mGraphicBuffer->getHeight());
+
+    //mAlloc->format = mSlots[buf].mGraphicBuffer->getPixelFormat();
+
+    //mAlloc->crop        = b.mCrop;
+    //mAlloc->transform   = b.mTransform;
+    //mAlloc->scalingMode = b.mScalingMode;
+    //mAlloc->frameNumber = b.mFrameNumber;
+
+    if (mAlloc->mHal.state.yuv) {
+        mAlloc->mHal.drvState.lod[1].mallocPtr = ycbcr.cb;
+        mAlloc->mHal.drvState.lod[2].mallocPtr = ycbcr.cr;
+
+        mAlloc->mHal.drvState.lod[0].stride = ycbcr.ystride;
+        mAlloc->mHal.drvState.lod[1].stride = ycbcr.cstride;
+        mAlloc->mHal.drvState.lod[2].stride = ycbcr.cstride;
+    }
+
+    return OK;
+}
+
+status_t GrallocConsumer::unlockBuffer() {
+    Mutex::Autolock _l(mMutex);
+    return releaseAcquiredBufferLocked();
+}
+
+status_t GrallocConsumer::releaseAcquiredBufferLocked() {
+    status_t err;
+
+    err = mAcquiredBuffer.mGraphicBuffer->unlock();
+    if (err != OK) {
+        ALOGE("%s: Unable to unlock graphic buffer", __FUNCTION__);
+        return err;
+    }
+    int buf = mAcquiredBuffer.mSlot;
+
+    // release the buffer if it hasn't already been freed by the BufferQueue.
+    // This can happen, for example, when the producer of this buffer
+    // disconnected after this buffer was acquired.
+    if (CC_LIKELY(mAcquiredBuffer.mGraphicBuffer ==
+            mSlots[buf].mGraphicBuffer)) {
+        releaseBufferLocked(
+                buf, mAcquiredBuffer.mGraphicBuffer,
+                EGL_NO_DISPLAY, EGL_NO_SYNC_KHR);
+    }
+
+    mAcquiredBuffer.mSlot = BufferQueue::INVALID_BUFFER_SLOT;
+    mAcquiredBuffer.mBufferPointer = NULL;
+    mAcquiredBuffer.mGraphicBuffer.clear();
+    return OK;
+}
+
+} // namespace renderscript
+} // namespace android
+