Remove NativeBuffer from libbufferhub

#ifndef ANDROID_DVR_NATIVE_BUFFER_H_

#define ANDROID_DVR_NATIVE_BUFFER_H_

#include <EGL/egl.h>

#include <EGL/eglext.h>

#include <log/log.h>

#include <ui/ANativeObjectBase.h>

#include <utils/RefBase.h>

#include <nativebase/nativebase.h>

#include <private/dvr/buffer_hub_client.h>

namespace android {

namespace dvr {

// ANativeWindowBuffer is the abstraction Android HALs and frameworks use to

// pass around hardware graphics buffers. The following classes implement this

// abstraction with different DVR backing buffers, all of which provide

// different semantics on top of ion/gralloc buffers.

// An implementation of ANativeWindowBuffer backed by an IonBuffer.

class NativeBuffer

    : public android::ANativeObjectBase<ANativeWindowBuffer, NativeBuffer,

                                        android::LightRefBase<NativeBuffer>> {

 public:

  static constexpr int kEmptyFence = -1;

  explicit NativeBuffer(const std::shared_ptr<IonBuffer>& buffer)

      : BASE(), buffer_(buffer), fence_(kEmptyFence) {

    ANativeWindowBuffer::width = buffer->width();

    ANativeWindowBuffer::height = buffer->height();

    ANativeWindowBuffer::stride = buffer->stride();

    ANativeWindowBuffer::format = buffer->format();

    ANativeWindowBuffer::usage = buffer->usage();

    handle = buffer_->handle();

  }

  virtual ~NativeBuffer() {}

  std::shared_ptr<IonBuffer> buffer() { return buffer_; }

  int fence() const { return fence_.Get(); }

  void SetFence(int fence) { fence_.Reset(fence); }

 private:

  friend class android::LightRefBase<NativeBuffer>;

  std::shared_ptr<IonBuffer> buffer_;

  pdx::LocalHandle fence_;

  NativeBuffer(const NativeBuffer&) = delete;

  void operator=(NativeBuffer&) = delete;

};

class NativeBufferProducer : public android::ANativeObjectBase<

                                 ANativeWindowBuffer, NativeBufferProducer,

                                 android::LightRefBase<NativeBufferProducer>> {

 public:

  static constexpr int kEmptyFence = -1;

  NativeBufferProducer(const std::shared_ptr<BufferProducer>& buffer,

                       EGLDisplay display, uint32_t surface_buffer_index)

      : BASE(),

        buffer_(buffer),

        surface_buffer_index_(surface_buffer_index),

        display_(display) {

    ANativeWindowBuffer::width = buffer_->width();

    ANativeWindowBuffer::height = buffer_->height();

    ANativeWindowBuffer::stride = buffer_->stride();

    ANativeWindowBuffer::format = buffer_->format();

    ANativeWindowBuffer::usage = buffer_->usage();

    ANativeWindowBuffer::handle = buffer_->native_handle();

    if (display_) {

      image_khr_ =

          eglCreateImageKHR(display_, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,

                            static_cast<ANativeWindowBuffer*>(this), nullptr);

    } else {

      image_khr_ = EGL_NO_IMAGE_KHR;

    }

  }

  explicit NativeBufferProducer(const std::shared_ptr<BufferProducer>& buffer)

      : NativeBufferProducer(buffer, nullptr, 0) {}

  virtual ~NativeBufferProducer() {

    if (image_khr_ != EGL_NO_IMAGE_KHR)

      eglDestroyImageKHR(display_, image_khr_);

  }

  EGLImageKHR image_khr() const { return image_khr_; }

  std::shared_ptr<BufferProducer> buffer() const { return buffer_; }

  int release_fence() const { return release_fence_.Get(); }

  uint32_t surface_buffer_index() const { return surface_buffer_index_; }

  // Return the release fence, passing ownership to the caller.

  pdx::LocalHandle ClaimReleaseFence() { return std::move(release_fence_); }

  // Post the buffer consumer, closing the acquire and release fences.

  int Post(int acquire_fence, uint64_t sequence) {

    release_fence_.Close();

    return buffer_->Post(pdx::LocalHandle(acquire_fence), sequence);

  }

  // Gain the buffer producer, closing the previous release fence if valid.

  int Gain() { return buffer_->Gain(&release_fence_); }

  // Asynchronously gain the buffer, closing the previous release fence.

  int GainAsync() {

    release_fence_.Close();

    return buffer_->GainAsync();

  }

 private:

  friend class android::LightRefBase<NativeBufferProducer>;

  std::shared_ptr<BufferProducer> buffer_;

  pdx::LocalHandle release_fence_;

  EGLImageKHR image_khr_;

  uint32_t surface_buffer_index_;

  EGLDisplay display_;

  NativeBufferProducer(const NativeBufferProducer&) = delete;

  void operator=(NativeBufferProducer&) = delete;

};

// NativeBufferConsumer is an implementation of ANativeWindowBuffer backed by a

// BufferConsumer.

class NativeBufferConsumer : public android::ANativeObjectBase<

                                 ANativeWindowBuffer, NativeBufferConsumer,

                                 android::LightRefBase<NativeBufferConsumer>> {

 public:

  static constexpr int kEmptyFence = -1;

  explicit NativeBufferConsumer(const std::shared_ptr<BufferConsumer>& buffer)

      : BASE(), buffer_(buffer), acquire_fence_(kEmptyFence), sequence_(0) {

    ANativeWindowBuffer::width = buffer_->width();

    ANativeWindowBuffer::height = buffer_->height();

    ANativeWindowBuffer::stride = buffer_->stride();

    ANativeWindowBuffer::format = buffer_->format();

    ANativeWindowBuffer::usage = buffer_->usage();

    handle = buffer_->native_handle();

  }

  virtual ~NativeBufferConsumer() {}

  std::shared_ptr<BufferConsumer> buffer() const { return buffer_; }

  int acquire_fence() const { return acquire_fence_.Get(); }

  uint64_t sequence() const { return sequence_; }

  // Return the acquire fence, passing ownership to the caller.

  pdx::LocalHandle ClaimAcquireFence() { return std::move(acquire_fence_); }

  // Acquire the underlying buffer consumer, closing the previous acquire fence

  // if valid.

  int Acquire() { return buffer_->Acquire(&acquire_fence_, &sequence_); }

  // Release the buffer consumer, closing the acquire and release fences if

  // valid.

  int Release(int release_fence) {

    acquire_fence_.Close();

    sequence_ = 0;

    return buffer_->Release(pdx::LocalHandle(release_fence));

  }

 private:

  friend class android::LightRefBase<NativeBufferConsumer>;

  std::shared_ptr<BufferConsumer> buffer_;

  pdx::LocalHandle acquire_fence_;

  uint64_t sequence_;

  NativeBufferConsumer(const NativeBufferConsumer&) = delete;

  void operator=(NativeBufferConsumer&) = delete;

};

}  // namespace dvr

}  // namespace android

#endif  // ANDROID_DVR_NATIVE_BUFFER_H_

#include <mutex>

#include <private/dvr/display_protocol.h>

#include <private/dvr/native_buffer.h>

using android::pdx::ErrorStatus;

using android::pdx::LocalHandle;