openpilot v0.6 release

phonelibs/android_frameworks_native/include/ui/GraphicBuffer.h

@@ -0,0 +1,183 @@
+/*
+ * Copyright (C) 2007 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.
+ */
+
+#ifndef ANDROID_GRAPHIC_BUFFER_H
+#define ANDROID_GRAPHIC_BUFFER_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <ui/ANativeObjectBase.h>
+#include <ui/PixelFormat.h>
+#include <ui/Rect.h>
+#include <utils/Flattenable.h>
+#include <utils/RefBase.h>
+
+
+struct ANativeWindowBuffer;
+
+namespace android {
+
+class GraphicBufferMapper;
+
+// ===========================================================================
+// GraphicBuffer
+// ===========================================================================
+
+class GraphicBuffer
+    : public ANativeObjectBase< ANativeWindowBuffer, GraphicBuffer, RefBase >,
+      public Flattenable<GraphicBuffer>
+{
+    friend class Flattenable<GraphicBuffer>;
+public:
+
+    enum {
+        USAGE_SW_READ_NEVER     = GRALLOC_USAGE_SW_READ_NEVER,
+        USAGE_SW_READ_RARELY    = GRALLOC_USAGE_SW_READ_RARELY,
+        USAGE_SW_READ_OFTEN     = GRALLOC_USAGE_SW_READ_OFTEN,
+        USAGE_SW_READ_MASK      = GRALLOC_USAGE_SW_READ_MASK,
+
+        USAGE_SW_WRITE_NEVER    = GRALLOC_USAGE_SW_WRITE_NEVER,
+        USAGE_SW_WRITE_RARELY   = GRALLOC_USAGE_SW_WRITE_RARELY,
+        USAGE_SW_WRITE_OFTEN    = GRALLOC_USAGE_SW_WRITE_OFTEN,
+        USAGE_SW_WRITE_MASK     = GRALLOC_USAGE_SW_WRITE_MASK,
+
+        USAGE_SOFTWARE_MASK     = USAGE_SW_READ_MASK|USAGE_SW_WRITE_MASK,
+
+        USAGE_PROTECTED         = GRALLOC_USAGE_PROTECTED,
+
+        USAGE_HW_TEXTURE        = GRALLOC_USAGE_HW_TEXTURE,
+        USAGE_HW_RENDER         = GRALLOC_USAGE_HW_RENDER,
+        USAGE_HW_2D             = GRALLOC_USAGE_HW_2D,
+        USAGE_HW_COMPOSER       = GRALLOC_USAGE_HW_COMPOSER,
+        USAGE_HW_VIDEO_ENCODER  = GRALLOC_USAGE_HW_VIDEO_ENCODER,
+        USAGE_HW_MASK           = GRALLOC_USAGE_HW_MASK,
+
+        USAGE_CURSOR            = GRALLOC_USAGE_CURSOR,
+    };
+
+    GraphicBuffer();
+
+    // creates w * h buffer
+    GraphicBuffer(uint32_t inWidth, uint32_t inHeight, PixelFormat inFormat,
+            uint32_t inUsage);
+
+    // create a buffer from an existing handle
+    GraphicBuffer(uint32_t inWidth, uint32_t inHeight, PixelFormat inFormat,
+            uint32_t inUsage, uint32_t inStride, native_handle_t* inHandle,
+            bool keepOwnership);
+
+    // create a buffer from an existing ANativeWindowBuffer
+    GraphicBuffer(ANativeWindowBuffer* buffer, bool keepOwnership);
+
+    // return status
+    status_t initCheck() const;
+
+    uint32_t getWidth() const           { return static_cast<uint32_t>(width); }
+    uint32_t getHeight() const          { return static_cast<uint32_t>(height); }
+    uint32_t getStride() const          { return static_cast<uint32_t>(stride); }
+    uint32_t getUsage() const           { return static_cast<uint32_t>(usage); }
+    PixelFormat getPixelFormat() const  { return format; }
+    Rect getBounds() const              { return Rect(width, height); }
+    uint64_t getId() const              { return mId; }
+
+    uint32_t getGenerationNumber() const { return mGenerationNumber; }
+    void setGenerationNumber(uint32_t generation) {
+        mGenerationNumber = generation;
+    }
+
+    status_t reallocate(uint32_t inWidth, uint32_t inHeight,
+            PixelFormat inFormat, uint32_t inUsage);
+
+    bool needsReallocation(uint32_t inWidth, uint32_t inHeight,
+            PixelFormat inFormat, uint32_t inUsage);
+
+    status_t lock(uint32_t inUsage, void** vaddr);
+    status_t lock(uint32_t inUsage, const Rect& rect, void** vaddr);
+    // For HAL_PIXEL_FORMAT_YCbCr_420_888
+    status_t lockYCbCr(uint32_t inUsage, android_ycbcr *ycbcr);
+    status_t lockYCbCr(uint32_t inUsage, const Rect& rect,
+            android_ycbcr *ycbcr);
+    status_t unlock();
+    status_t lockAsync(uint32_t inUsage, void** vaddr, int fenceFd);
+    status_t lockAsync(uint32_t inUsage, const Rect& rect, void** vaddr,
+            int fenceFd);
+    status_t lockAsyncYCbCr(uint32_t inUsage, android_ycbcr *ycbcr,
+            int fenceFd);
+    status_t lockAsyncYCbCr(uint32_t inUsage, const Rect& rect,
+            android_ycbcr *ycbcr, int fenceFd);
+    status_t unlockAsync(int *fenceFd);
+
+    ANativeWindowBuffer* getNativeBuffer() const;
+
+    // for debugging
+    static void dumpAllocationsToSystemLog();
+
+    // Flattenable protocol
+    size_t getFlattenedSize() const;
+    size_t getFdCount() const;
+    status_t flatten(void*& buffer, size_t& size, int*& fds, size_t& count) const;
+    status_t unflatten(void const*& buffer, size_t& size, int const*& fds, size_t& count);
+
+private:
+    ~GraphicBuffer();
+
+    enum {
+        ownNone   = 0,
+        ownHandle = 1,
+        ownData   = 2,
+    };
+
+    inline const GraphicBufferMapper& getBufferMapper() const {
+        return mBufferMapper;
+    }
+    inline GraphicBufferMapper& getBufferMapper() {
+        return mBufferMapper;
+    }
+    uint8_t mOwner;
+
+private:
+    friend class Surface;
+    friend class BpSurface;
+    friend class BnSurface;
+    friend class LightRefBase<GraphicBuffer>;
+    GraphicBuffer(const GraphicBuffer& rhs);
+    GraphicBuffer& operator = (const GraphicBuffer& rhs);
+    const GraphicBuffer& operator = (const GraphicBuffer& rhs) const;
+
+    status_t initSize(uint32_t inWidth, uint32_t inHeight, PixelFormat inFormat,
+            uint32_t inUsage);
+
+    void free_handle();
+
+    GraphicBufferMapper& mBufferMapper;
+    ssize_t mInitCheck;
+
+    // If we're wrapping another buffer then this reference will make sure it
+    // doesn't get freed.
+    sp<ANativeWindowBuffer> mWrappedBuffer;
+
+    uint64_t mId;
+
+    // Stores the generation number of this buffer. If this number does not
+    // match the BufferQueue's internal generation number (set through
+    // IGBP::setGenerationNumber), attempts to attach the buffer will fail.
+    uint32_t mGenerationNumber;
+};
+
+}; // namespace android
+
+#endif // ANDROID_GRAPHIC_BUFFER_H