text: /*
  * Copyright (c) 2015 - 2016, 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 <utils/debug.h>
  #include "hw_virtual.h"
  
  #define __CLASS__ "HWVirtual"
  
  namespace sdm {
  
  DisplayError HWVirtual::Create(HWInterface **intf, HWInfoInterface *hw_info_intf,
                                 BufferSyncHandler *buffer_sync_handler) {
    DisplayError error = kErrorNone;
    HWVirtual *hw_virtual = NULL;
  
    hw_virtual = new HWVirtual(buffer_sync_handler, hw_info_intf);
    error = hw_virtual->Init();
    if (error != kErrorNone) {
      delete hw_virtual;
    } else {
      *intf = hw_virtual;
    }
  
    return error;
  }
  
  DisplayError HWVirtual::Destroy(HWInterface *intf) {
    HWVirtual *hw_virtual = static_cast<HWVirtual *>(intf);
    hw_virtual->Deinit();
    delete hw_virtual;
  
    return kErrorNone;
  }
  
  HWVirtual::HWVirtual(BufferSyncHandler *buffer_sync_handler, HWInfoInterface *hw_info_intf)
    : HWDevice(buffer_sync_handler) {
    HWDevice::device_type_ = kDeviceVirtual;
    HWDevice::device_name_ = "Virtual Display Device";
    HWDevice::hw_info_intf_ = hw_info_intf;
  }
  
  DisplayError HWVirtual::Init() {
    return HWDevice::Init();
  }
  
  DisplayError HWVirtual::Validate(HWLayers *hw_layers) {
    HWDevice::ResetDisplayParams();
    return HWDevice::Validate(hw_layers);
  }
  
  DisplayError HWVirtual::GetMixerAttributes(HWMixerAttributes *mixer_attributes) {
    if (!mixer_attributes) {
      return kErrorParameters;
    }
  
    mixer_attributes->width = display_attributes_.x_pixels;
    mixer_attributes->height = display_attributes_.y_pixels;
    mixer_attributes_.split_left = display_attributes_.is_device_split ?
        (display_attributes_.x_pixels / 2) : mixer_attributes_.width;
  
    return kErrorNone;
  }
  
  DisplayError HWVirtual::SetDisplayAttributes(const HWDisplayAttributes &display_attributes) {
    if (display_attributes.x_pixels == 0 || display_attributes.y_pixels == 0) {
      return kErrorParameters;
    }
  
    display_attributes_ = display_attributes;
  
    if (display_attributes_.x_pixels > hw_resource_.max_mixer_width) {
      display_attributes_.is_device_split = true;
    }
  
    return kErrorNone;
  }
  
  }  // namespace sdm
  
  