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      1 /*
      2 * Copyright (c) 2015 - 2016, The Linux Foundation. All rights reserved.
      3 *
      4 * Redistribution and use in source and binary forms, with or without
      5 * modification, are permitted provided that the following conditions are
      6 * met:
      7 *     * Redistributions of source code must retain the above copyright
      8 *       notice, this list of conditions and the following disclaimer.
      9 *     * Redistributions in binary form must reproduce the above
     10 *       copyright notice, this list of conditions and the following
     11 *       disclaimer in the documentation and/or other materials provided
     12 *       with the distribution.
     13 *     * Neither the name of The Linux Foundation nor the names of its
     14 *       contributors may be used to endorse or promote products derived
     15 *       from this software without specific prior written permission.
     16 *
     17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
     18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
     20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
     21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
     24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
     27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 */
     29 
     30 #include <utils/debug.h>
     31 #include "hw_virtual.h"
     32 
     33 #define __CLASS__ "HWVirtual"
     34 
     35 namespace sdm {
     36 
     37 HWVirtual::HWVirtual(BufferSyncHandler *buffer_sync_handler, HWInfoInterface *hw_info_intf)
     38   : HWDevice(buffer_sync_handler) {
     39   HWDevice::device_type_ = kDeviceVirtual;
     40   HWDevice::device_name_ = "Virtual Display Device";
     41   HWDevice::hw_info_intf_ = hw_info_intf;
     42 }
     43 
     44 DisplayError HWVirtual::Init() {
     45   return HWDevice::Init();
     46 }
     47 
     48 DisplayError HWVirtual::Validate(HWLayers *hw_layers) {
     49   HWDevice::ResetDisplayParams();
     50   return HWDevice::Validate(hw_layers);
     51 }
     52 
     53 DisplayError HWVirtual::GetMixerAttributes(HWMixerAttributes *mixer_attributes) {
     54   if (!mixer_attributes) {
     55     return kErrorParameters;
     56   }
     57 
     58   mixer_attributes->width = display_attributes_.x_pixels;
     59   mixer_attributes->height = display_attributes_.y_pixels;
     60   mixer_attributes_.split_left = display_attributes_.is_device_split ?
     61       (display_attributes_.x_pixels / 2) : mixer_attributes_.width;
     62 
     63   return kErrorNone;
     64 }
     65 
     66 DisplayError HWVirtual::SetDisplayAttributes(const HWDisplayAttributes &display_attributes) {
     67   if (display_attributes.x_pixels == 0 || display_attributes.y_pixels == 0) {
     68     return kErrorParameters;
     69   }
     70 
     71   display_attributes_ = display_attributes;
     72 
     73   if (display_attributes_.x_pixels > hw_resource_.max_mixer_width) {
     74     display_attributes_.is_device_split = true;
     75   }
     76 
     77   return kErrorNone;
     78 }
     79 
     80 }  // namespace sdm
     81 
     82