bufferinfo/BufferInfoGetter.h

/*
 * Copyright (C) 2020 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_BUFFERINFOGETTER_H_
#define ANDROID_BUFFERINFOGETTER_H_

#include <drm/drm_fourcc.h>
#include <hardware/gralloc.h>

#include "drm/DrmDevice.h"
#include "drmhwcgralloc.h"

#ifndef DRM_FORMAT_INVALID
#define DRM_FORMAT_INVALID 0
#endif

namespace android {

class BufferInfoGetter {
 public:
  virtual ~BufferInfoGetter() {
  }

  virtual int ConvertBoInfo(buffer_handle_t handle, hwc_drm_bo_t *bo) = 0;

  bool IsHandleUsable(buffer_handle_t handle);

  static BufferInfoGetter *GetInstance();

  static uint32_t DrmFormatToBitsPerPixel(uint32_t drm_format);
  static bool IsDrmFormatRgb(uint32_t drm_format);
};

class LegacyBufferInfoGetter : public BufferInfoGetter {
 public:
  using BufferInfoGetter::BufferInfoGetter;

  int Init();

  int ConvertBoInfo(buffer_handle_t handle, hwc_drm_bo_t *bo) override = 0;

  static LegacyBufferInfoGetter *CreateInstance();

  static uint32_t ConvertHalFormatToDrm(uint32_t hal_format);
  const gralloc_module_t *gralloc_;
};

#define LEGACY_BUFFER_INFO_GETTER(getter_)                           \
  LegacyBufferInfoGetter *LegacyBufferInfoGetter::CreateInstance() { \
    auto *instance = new getter_();                                  \
    if (!instance)                                                   \
      return NULL;                                                   \
                                                                     \
    int ret = instance->Init();                                      \
    if (ret) {                                                       \
      ALOGE("Failed to initialize the " #getter_ " getter %d", ret); \
      delete instance;                                               \
      return NULL;                                                   \
    }                                                                \
    return instance;                                                 \
  }

}  // namespace android
#endif