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      1 /*
      2 * Copyright (c) 2014 - 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 <cutils/properties.h>
     31 #include <utils/constants.h>
     32 #include <utils/debug.h>
     33 #include <algorithm>
     34 
     35 #include "hwc_display_external.h"
     36 #include "hwc_debugger.h"
     37 
     38 #define __CLASS__ "HWCDisplayExternal"
     39 
     40 namespace sdm {
     41 
     42 int HWCDisplayExternal::Create(CoreInterface *core_intf, HWCCallbacks *callbacks,
     43                                qService::QService *qservice, HWCDisplay **hwc_display) {
     44   return Create(core_intf, callbacks, 0, 0, qservice, false, hwc_display);
     45 }
     46 
     47 int HWCDisplayExternal::Create(CoreInterface *core_intf, HWCCallbacks *callbacks,
     48                                uint32_t primary_width, uint32_t primary_height,
     49                                qService::QService *qservice, bool use_primary_res,
     50                                HWCDisplay **hwc_display) {
     51   uint32_t external_width = 0;
     52   uint32_t external_height = 0;
     53   DisplayError error = kErrorNone;
     54 
     55   HWCDisplay *hwc_display_external = new HWCDisplayExternal(core_intf, callbacks, qservice);
     56   int status = hwc_display_external->Init();
     57   if (status) {
     58     delete hwc_display_external;
     59     return status;
     60   }
     61 
     62   error = hwc_display_external->GetMixerResolution(&external_width, &external_height);
     63   if (error != kErrorNone) {
     64     return -EINVAL;
     65   }
     66 
     67   if (primary_width && primary_height) {
     68     // use_primary_res means HWCDisplayExternal should directly set framebuffer resolution to the
     69     // provided primary_width and primary_height
     70     if (use_primary_res) {
     71       external_width = primary_width;
     72       external_height = primary_height;
     73     } else {
     74       int downscale_enabled = 0;
     75       HWCDebugHandler::Get()->GetProperty("sdm.debug.downscale_external", &downscale_enabled);
     76       if (downscale_enabled) {
     77         GetDownscaleResolution(primary_width, primary_height, &external_width, &external_height);
     78       }
     79     }
     80   }
     81 
     82   status = hwc_display_external->SetFrameBufferResolution(external_width, external_height);
     83   if (status) {
     84     Destroy(hwc_display_external);
     85     return status;
     86   }
     87 
     88   *hwc_display = hwc_display_external;
     89 
     90   return status;
     91 }
     92 
     93 void HWCDisplayExternal::Destroy(HWCDisplay *hwc_display) {
     94   hwc_display->Deinit();
     95   delete hwc_display;
     96 }
     97 
     98 HWCDisplayExternal::HWCDisplayExternal(CoreInterface *core_intf, HWCCallbacks *callbacks,
     99                                        qService::QService *qservice)
    100     : HWCDisplay(core_intf, callbacks, kHDMI, HWC_DISPLAY_EXTERNAL, false, qservice,
    101                  DISPLAY_CLASS_EXTERNAL) {
    102 }
    103 
    104 HWC2::Error HWCDisplayExternal::Validate(uint32_t *out_num_types, uint32_t *out_num_requests) {
    105   auto status = HWC2::Error::None;
    106 
    107   if (secure_display_active_) {
    108     MarkLayersForGPUBypass();
    109     return status;
    110   }
    111 
    112   BuildLayerStack();
    113 
    114   if (layer_set_.empty()) {
    115     flush_ = true;
    116     return status;
    117   }
    118 
    119   status = PrepareLayerStack(out_num_types, out_num_requests);
    120   return status;
    121 }
    122 
    123 HWC2::Error HWCDisplayExternal::Present(int32_t *out_retire_fence) {
    124   auto status = HWC2::Error::None;
    125 
    126   if (!secure_display_active_) {
    127     status = HWCDisplay::CommitLayerStack();
    128     if (status == HWC2::Error::None) {
    129       status = HWCDisplay::PostCommitLayerStack(out_retire_fence);
    130     }
    131   }
    132   CloseAcquireFds();
    133   return status;
    134 }
    135 
    136 void HWCDisplayExternal::ApplyScanAdjustment(hwc_rect_t *display_frame) {
    137   if (display_intf_->IsUnderscanSupported()) {
    138     return;
    139   }
    140 
    141   // Read user defined width and height ratio
    142   int width = 0, height = 0;
    143   HWCDebugHandler::Get()->GetProperty("sdm.external_action_safe_width", &width);
    144   float width_ratio = FLOAT(width) / 100.0f;
    145   HWCDebugHandler::Get()->GetProperty("sdm.external_action_safe_height", &height);
    146   float height_ratio = FLOAT(height) / 100.0f;
    147 
    148   if (width_ratio == 0.0f || height_ratio == 0.0f) {
    149     return;
    150   }
    151 
    152   uint32_t mixer_width = 0;
    153   uint32_t mixer_height = 0;
    154   GetMixerResolution(&mixer_width, &mixer_height);
    155 
    156   if (mixer_width == 0 || mixer_height == 0) {
    157     DLOGV("Invalid mixer dimensions (%d, %d)", mixer_width, mixer_height);
    158     return;
    159   }
    160 
    161   uint32_t new_mixer_width = UINT32(mixer_width * FLOAT(1.0f - width_ratio));
    162   uint32_t new_mixer_height = UINT32(mixer_height * FLOAT(1.0f - height_ratio));
    163 
    164   int x_offset = INT((FLOAT(mixer_width) * width_ratio) / 2.0f);
    165   int y_offset = INT((FLOAT(mixer_height) * height_ratio) / 2.0f);
    166 
    167   display_frame->left = (display_frame->left * INT32(new_mixer_width) / INT32(mixer_width))
    168                         + x_offset;
    169   display_frame->top = (display_frame->top * INT32(new_mixer_height) / INT32(mixer_height)) +
    170                        y_offset;
    171   display_frame->right = ((display_frame->right * INT32(new_mixer_width)) / INT32(mixer_width)) +
    172                          x_offset;
    173   display_frame->bottom = ((display_frame->bottom * INT32(new_mixer_height)) / INT32(mixer_height))
    174                           + y_offset;
    175 }
    176 
    177 void HWCDisplayExternal::SetSecureDisplay(bool secure_display_active) {
    178   if (secure_display_active_ != secure_display_active) {
    179     secure_display_active_ = secure_display_active;
    180 
    181     if (secure_display_active_) {
    182       DisplayError error = display_intf_->Flush();
    183       if (error != kErrorNone) {
    184         DLOGE("Flush failed. Error = %d", error);
    185       }
    186     }
    187   }
    188   return;
    189 }
    190 
    191 static void AdjustSourceResolution(uint32_t dst_width, uint32_t dst_height, uint32_t *src_width,
    192                                    uint32_t *src_height) {
    193   *src_height = (dst_width * (*src_height)) / (*src_width);
    194   *src_width = dst_width;
    195 }
    196 
    197 void HWCDisplayExternal::GetDownscaleResolution(uint32_t primary_width, uint32_t primary_height,
    198                                                 uint32_t *non_primary_width,
    199                                                 uint32_t *non_primary_height) {
    200   uint32_t primary_area = primary_width * primary_height;
    201   uint32_t non_primary_area = (*non_primary_width) * (*non_primary_height);
    202 
    203   if (primary_area > non_primary_area) {
    204     if (primary_height > primary_width) {
    205       std::swap(primary_height, primary_width);
    206     }
    207     AdjustSourceResolution(primary_width, primary_height, non_primary_width, non_primary_height);
    208   }
    209 }
    210 
    211 }  // namespace sdm
    212