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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, HWCBufferAllocator *buffer_allocator,
     43                                HWCCallbacks *callbacks, qService::QService *qservice,
     44                                HWCDisplay **hwc_display) {
     45   return Create(core_intf, buffer_allocator, callbacks, 0, 0, qservice, false, hwc_display);
     46 }
     47 
     48 int HWCDisplayExternal::Create(CoreInterface *core_intf, HWCBufferAllocator *buffer_allocator,
     49                                HWCCallbacks *callbacks,
     50                                uint32_t primary_width, uint32_t primary_height,
     51                                qService::QService *qservice, bool use_primary_res,
     52                                HWCDisplay **hwc_display) {
     53   uint32_t external_width = 0;
     54   uint32_t external_height = 0;
     55   DisplayError error = kErrorNone;
     56 
     57   HWCDisplay *hwc_display_external = new HWCDisplayExternal(core_intf, buffer_allocator, callbacks,
     58                                                             qservice);
     59   int status = hwc_display_external->Init();
     60   if (status) {
     61     delete hwc_display_external;
     62     return status;
     63   }
     64 
     65   error = hwc_display_external->GetMixerResolution(&external_width, &external_height);
     66   if (error != kErrorNone) {
     67     return -EINVAL;
     68   }
     69 
     70   if (primary_width && primary_height) {
     71     // use_primary_res means HWCDisplayExternal should directly set framebuffer resolution to the
     72     // provided primary_width and primary_height
     73     if (use_primary_res) {
     74       external_width = primary_width;
     75       external_height = primary_height;
     76     } else {
     77       int downscale_enabled = 0;
     78       HWCDebugHandler::Get()->GetProperty("sdm.debug.downscale_external", &downscale_enabled);
     79       if (downscale_enabled) {
     80         GetDownscaleResolution(primary_width, primary_height, &external_width, &external_height);
     81       }
     82     }
     83   }
     84 
     85   status = hwc_display_external->SetFrameBufferResolution(external_width, external_height);
     86   if (status) {
     87     Destroy(hwc_display_external);
     88     return status;
     89   }
     90 
     91   *hwc_display = hwc_display_external;
     92 
     93   return status;
     94 }
     95 
     96 void HWCDisplayExternal::Destroy(HWCDisplay *hwc_display) {
     97   hwc_display->Deinit();
     98   delete hwc_display;
     99 }
    100 
    101 HWCDisplayExternal::HWCDisplayExternal(CoreInterface *core_intf,
    102                                        HWCBufferAllocator *buffer_allocator,
    103                                        HWCCallbacks *callbacks,
    104                                        qService::QService *qservice)
    105     : HWCDisplay(core_intf, callbacks, kHDMI, HWC_DISPLAY_EXTERNAL, false, qservice,
    106                  DISPLAY_CLASS_EXTERNAL, buffer_allocator) {
    107 }
    108 
    109 HWC2::Error HWCDisplayExternal::Validate(uint32_t *out_num_types, uint32_t *out_num_requests) {
    110   auto status = HWC2::Error::None;
    111 
    112   if (secure_display_active_) {
    113     MarkLayersForGPUBypass();
    114     return status;
    115   }
    116 
    117   BuildLayerStack();
    118 
    119   if (layer_set_.empty()) {
    120     flush_ = true;
    121     return status;
    122   }
    123 
    124   status = PrepareLayerStack(out_num_types, out_num_requests);
    125   return status;
    126 }
    127 
    128 HWC2::Error HWCDisplayExternal::Present(int32_t *out_retire_fence) {
    129   auto status = HWC2::Error::None;
    130 
    131   if (!secure_display_active_) {
    132     status = HWCDisplay::CommitLayerStack();
    133     if (status == HWC2::Error::None) {
    134       status = HWCDisplay::PostCommitLayerStack(out_retire_fence);
    135     }
    136   }
    137   CloseAcquireFds();
    138   return status;
    139 }
    140 
    141 void HWCDisplayExternal::ApplyScanAdjustment(hwc_rect_t *display_frame) {
    142   if ((underscan_width_ <= 0) || (underscan_height_ <= 0)) {
    143     return;
    144   }
    145 
    146   float width_ratio = FLOAT(underscan_width_) / 100.0f;
    147   float height_ratio = FLOAT(underscan_height_) / 100.0f;
    148 
    149   uint32_t mixer_width = 0;
    150   uint32_t mixer_height = 0;
    151   GetMixerResolution(&mixer_width, &mixer_height);
    152 
    153   if (mixer_width == 0 || mixer_height == 0) {
    154     DLOGV("Invalid mixer dimensions (%d, %d)", mixer_width, mixer_height);
    155     return;
    156   }
    157 
    158   uint32_t new_mixer_width = UINT32(mixer_width * FLOAT(1.0f - width_ratio));
    159   uint32_t new_mixer_height = UINT32(mixer_height * FLOAT(1.0f - height_ratio));
    160 
    161   int x_offset = INT((FLOAT(mixer_width) * width_ratio) / 2.0f);
    162   int y_offset = INT((FLOAT(mixer_height) * height_ratio) / 2.0f);
    163 
    164   display_frame->left = (display_frame->left * INT32(new_mixer_width) / INT32(mixer_width))
    165                         + x_offset;
    166   display_frame->top = (display_frame->top * INT32(new_mixer_height) / INT32(mixer_height)) +
    167                        y_offset;
    168   display_frame->right = ((display_frame->right * INT32(new_mixer_width)) / INT32(mixer_width)) +
    169                          x_offset;
    170   display_frame->bottom = ((display_frame->bottom * INT32(new_mixer_height)) / INT32(mixer_height))
    171                           + y_offset;
    172 }
    173 
    174 void HWCDisplayExternal::SetSecureDisplay(bool secure_display_active) {
    175   if (secure_display_active_ != secure_display_active) {
    176     secure_display_active_ = secure_display_active;
    177 
    178     if (secure_display_active_) {
    179       DisplayError error = display_intf_->Flush();
    180       if (error != kErrorNone) {
    181         DLOGE("Flush failed. Error = %d", error);
    182       }
    183     }
    184   }
    185   return;
    186 }
    187 
    188 static void AdjustSourceResolution(uint32_t dst_width, uint32_t dst_height, uint32_t *src_width,
    189                                    uint32_t *src_height) {
    190   *src_height = (dst_width * (*src_height)) / (*src_width);
    191   *src_width = dst_width;
    192 }
    193 
    194 void HWCDisplayExternal::GetDownscaleResolution(uint32_t primary_width, uint32_t primary_height,
    195                                                 uint32_t *non_primary_width,
    196                                                 uint32_t *non_primary_height) {
    197   uint32_t primary_area = primary_width * primary_height;
    198   uint32_t non_primary_area = (*non_primary_width) * (*non_primary_height);
    199 
    200   if (primary_area > non_primary_area) {
    201     if (primary_height > primary_width) {
    202       std::swap(primary_height, primary_width);
    203     }
    204     AdjustSourceResolution(primary_width, primary_height, non_primary_width, non_primary_height);
    205   }
    206 }
    207 
    208 void HWCDisplayExternal::GetUnderScanConfig() {
    209   if (!display_intf_->IsUnderscanSupported()) {
    210     // Read user defined underscan width and height
    211     HWCDebugHandler::Get()->GetProperty("sdm.external_action_safe_width", &underscan_width_);
    212     HWCDebugHandler::Get()->GetProperty("sdm.external_action_safe_height", &underscan_height_);
    213   }
    214 }
    215 
    216 }  // namespace sdm
    217