1/*
2* Copyright (c) 2014 - 2017, The Linux Foundation. All rights reserved.
3*
4* Redistribution and use in source and binary forms, with or without modification, are permitted
5* provided that the following conditions are met:
6*    * Redistributions of source code must retain the above copyright notice, this list of
7*      conditions and the following disclaimer.
8*    * Redistributions in binary form must reproduce the above copyright notice, this list of
9*      conditions and the following disclaimer in the documentation and/or other materials provided
10*      with the distribution.
11*    * Neither the name of The Linux Foundation nor the names of its contributors may be used to
12*      endorse or promote products derived from this software without specific prior written
13*      permission.
14*
15* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
16* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
17* NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
18* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
19* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
20* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
21* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23*/
24
25#include <utils/constants.h>
26#include <utils/debug.h>
27
28#include "display_virtual.h"
29#include "hw_interface.h"
30#include "hw_info_interface.h"
31
32#define __CLASS__ "DisplayVirtual"
33
34namespace sdm {
35
36DisplayVirtual::DisplayVirtual(DisplayEventHandler *event_handler, HWInfoInterface *hw_info_intf,
37                               BufferSyncHandler *buffer_sync_handler,
38                               BufferAllocator *buffer_allocator, CompManager *comp_manager)
39  : DisplayBase(kVirtual, event_handler, kDeviceVirtual, buffer_sync_handler, buffer_allocator,
40                comp_manager, hw_info_intf) {
41}
42
43DisplayError DisplayVirtual::Init() {
44  lock_guard<recursive_mutex> obj(recursive_mutex_);
45
46  DisplayError error = HWInterface::Create(kVirtual, hw_info_intf_, buffer_sync_handler_,
47                                           buffer_allocator_, &hw_intf_);
48  if (error != kErrorNone) {
49    return error;
50  }
51
52  hw_intf_->GetDisplayAttributes(0 /* active_index */, &display_attributes_);
53
54  error = DisplayBase::Init();
55  if (error != kErrorNone) {
56    HWInterface::Destroy(hw_intf_);
57  }
58
59  return error;
60}
61
62DisplayError DisplayVirtual::GetNumVariableInfoConfigs(uint32_t *count) {
63  lock_guard<recursive_mutex> obj(recursive_mutex_);
64  *count = 1;
65  return kErrorNone;
66}
67
68DisplayError DisplayVirtual::GetConfig(uint32_t index, DisplayConfigVariableInfo *variable_info) {
69  lock_guard<recursive_mutex> obj(recursive_mutex_);
70  *variable_info = display_attributes_;
71  return kErrorNone;
72}
73
74DisplayError DisplayVirtual::GetActiveConfig(uint32_t *index) {
75  lock_guard<recursive_mutex> obj(recursive_mutex_);
76  *index = 0;
77  return kErrorNone;
78}
79
80DisplayError DisplayVirtual::SetActiveConfig(DisplayConfigVariableInfo *variable_info) {
81  lock_guard<recursive_mutex> obj(recursive_mutex_);
82
83  if (!variable_info) {
84    return kErrorParameters;
85  }
86
87  DisplayError error = kErrorNone;
88  HWDisplayAttributes display_attributes;
89  HWMixerAttributes mixer_attributes;
90
91  display_attributes.x_pixels = variable_info->x_pixels;
92  display_attributes.y_pixels = variable_info->y_pixels;
93  display_attributes.fps = variable_info->fps;
94
95  if (display_attributes == display_attributes_) {
96    return kErrorNone;
97  }
98
99  error = hw_intf_->SetDisplayAttributes(display_attributes);
100  if (error != kErrorNone) {
101    return error;
102  }
103
104  error = hw_intf_->GetMixerAttributes(&mixer_attributes);
105  if (error != kErrorNone) {
106    return error;
107  }
108
109  // if display is already connected, unregister display from composition manager and register
110  // the display with new configuration.
111  if (display_comp_ctx_) {
112    comp_manager_->UnregisterDisplay(display_comp_ctx_);
113  }
114
115  error = comp_manager_->RegisterDisplay(display_type_, display_attributes, hw_panel_info_,
116                                         mixer_attributes, fb_config_, &display_comp_ctx_);
117  if (error != kErrorNone) {
118    return error;
119  }
120
121  display_attributes_ = display_attributes;
122  mixer_attributes_ = mixer_attributes;
123
124  DLOGI("Virtual display resolution changed to[%dx%d]", display_attributes_.x_pixels,
125        display_attributes_.y_pixels);
126
127  return kErrorNone;
128}
129
130DisplayError DisplayVirtual::Prepare(LayerStack *layer_stack) {
131  lock_guard<recursive_mutex> obj(recursive_mutex_);
132
133  // Clean hw layers for reuse.
134  hw_layers_ = HWLayers();
135
136  return DisplayBase::Prepare(layer_stack);
137}
138
139
140}  // namespace sdm
141
142