composer/hwc_display_virtual_factory.cpp

/*
 * Copyright (c) 2019, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above
      copyright notice, this list of conditions and the following
      disclaimer in the documentation and/or other materials provided
      with the distribution.
    * Neither the name of The Linux Foundation nor the names of its
      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "hwc_display_virtual_factory.h"
#include "hwc_display_virtual_dpu.h"
#include "hwc_display_virtual_gpu.h"

#define __CLASS__ "HWCVirtualDisplayFactory"

namespace sdm {

int HWCVirtualDisplayFactory::Create(CoreInterface *core_intf, HWCBufferAllocator *buffer_allocator,
                              HWCCallbacks *callbacks, hwc2_display_t id, int32_t sdm_id,
                              uint32_t width, uint32_t height, int32_t *format,
                              float min_lum, float max_lum, HWCDisplay **hwc_display) {
  int supported_virtual_displays = 0;
  DisplayError error = core_intf->GetMaxDisplaysSupported(kVirtual, &supported_virtual_displays);
  if (error != kErrorNone) {
    DLOGE("Could not find maximum virtual displays supported. Error = %d", error);
    return -1;
  }

  HWCDisplayVirtual *hwc_display_virtual = nullptr;
  if (supported_virtual_displays) {
    hwc_display_virtual = new HWCDisplayVirtualDPU(core_intf, buffer_allocator, callbacks, id,
                                                   sdm_id, width, height, min_lum, max_lum);
  } else {
    // Create GPU based virtual display.
    hwc_display_virtual = new HWCDisplayVirtualGPU(core_intf, buffer_allocator, callbacks, id,
                                                   sdm_id, width, height, min_lum, max_lum);
  }

  if (hwc_display_virtual == nullptr) {
    DLOGE("Failed to create instance");
    return -1;
  } else {
    DLOGI("Created %s based virtual display", (supported_virtual_displays ? "DPU" : "GPU"));
  }

  int status = hwc_display_virtual->Init();
  if (status) {
    DLOGW("Failed to initialize virtual display");
    Destroy(hwc_display_virtual);
    return status;
  }

  // TODO(user): Populate format correctly
  DLOGI("Creating virtual display: w: %d h:%d format:0x%x", width, height, *format);

  *hwc_display = hwc_display_virtual;

  return status;
}

bool HWCVirtualDisplayFactory::IsGPUColorConvertSupported() {
  int value = 0;
  HWCDebugHandler::Get()->GetProperty(DISABLE_GPU_COLOR_CONVERT, &value);
  return (value == 0);
}

void HWCVirtualDisplayFactory::Destroy(HWCDisplay *hwc_display) {
  DLOGI("Destroying virtual display instance");
  if (hwc_display->Deinit() != 0) {
    DLOGE("Failed to destroy instance");
  }

  delete hwc_display;
}

}  // namespace sdm