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      1 /*
      2 * Copyright (c) 2017, 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 #ifndef __DISPLAY_NULL_H__
     31 #define __DISPLAY_NULL_H__
     32 
     33 #include <core/display_interface.h>
     34 #include <string>
     35 #include <vector>
     36 
     37 namespace sdm {
     38 
     39 #define MAKE_NO_OP(virtual_method_name) \
     40       virtual DisplayError virtual_method_name { return kErrorNone; }
     41 
     42 class DisplayNull : public DisplayInterface {
     43  public:
     44   virtual ~DisplayNull() { }
     45   virtual DisplayError Commit(LayerStack *layer_stack);
     46   virtual DisplayError GetDisplayState(DisplayState *state);
     47   virtual DisplayError SetDisplayState(DisplayState state);
     48   virtual DisplayError SetFrameBufferConfig(const DisplayConfigVariableInfo &variable_info);
     49   virtual DisplayError GetFrameBufferConfig(DisplayConfigVariableInfo *variable_info);
     50   virtual bool IsUnderscanSupported() { return true; }
     51   virtual void SetIdleTimeoutMs(uint32_t active_ms) { }
     52   virtual bool IsPrimaryDisplay() { return true; }
     53 
     54   void SetActive(bool active) {
     55     active_ = active;
     56   }
     57 
     58   bool IsActive() {
     59     return active_;
     60   }
     61 
     62   MAKE_NO_OP(Prepare(LayerStack *))
     63   MAKE_NO_OP(Flush())
     64   MAKE_NO_OP(GetNumVariableInfoConfigs(uint32_t *))
     65   MAKE_NO_OP(GetConfig(uint32_t, DisplayConfigVariableInfo *))
     66   MAKE_NO_OP(GetConfig(DisplayConfigFixedInfo *))
     67   MAKE_NO_OP(GetActiveConfig(uint32_t *))
     68   MAKE_NO_OP(GetVSyncState(bool *))
     69   MAKE_NO_OP(SetActiveConfig(uint32_t))
     70   MAKE_NO_OP(SetActiveConfig(DisplayConfigVariableInfo *))
     71   MAKE_NO_OP(SetMaxMixerStages(uint32_t))
     72   MAKE_NO_OP(ControlPartialUpdate(bool, uint32_t *))
     73   MAKE_NO_OP(DisablePartialUpdateOneFrame())
     74   MAKE_NO_OP(SetDisplayMode(uint32_t))
     75   MAKE_NO_OP(SetPanelBrightness(int))
     76   MAKE_NO_OP(CachePanelBrightness(int))
     77   MAKE_NO_OP(OnMinHdcpEncryptionLevelChange(uint32_t))
     78   MAKE_NO_OP(ColorSVCRequestRoute(const PPDisplayAPIPayload &, PPDisplayAPIPayload *,
     79                                   PPPendingParams *))
     80   MAKE_NO_OP(GetColorModeCount(uint32_t *))
     81   MAKE_NO_OP(GetColorModes(uint32_t *, std::vector<std::string> *))
     82   MAKE_NO_OP(GetColorModeAttr(const std::string &, AttrVal *))
     83   MAKE_NO_OP(SetColorMode(const std::string &))
     84   MAKE_NO_OP(SetColorModeById(int32_t))
     85   MAKE_NO_OP(SetColorTransform(const uint32_t, const double *))
     86   MAKE_NO_OP(GetDefaultColorMode(std::string *))
     87   MAKE_NO_OP(ApplyDefaultDisplayMode())
     88   MAKE_NO_OP(SetCursorPosition(int, int))
     89   MAKE_NO_OP(GetRefreshRateRange(uint32_t *, uint32_t *))
     90   MAKE_NO_OP(SetRefreshRate(uint32_t))
     91   MAKE_NO_OP(GetPanelBrightness(int *))
     92   MAKE_NO_OP(SetVSyncState(bool))
     93   MAKE_NO_OP(SetMixerResolution(uint32_t, uint32_t))
     94   MAKE_NO_OP(GetMixerResolution(uint32_t *, uint32_t *))
     95   MAKE_NO_OP(SetDetailEnhancerData(const DisplayDetailEnhancerData &))
     96   MAKE_NO_OP(GetDisplayPort(DisplayPort *))
     97   MAKE_NO_OP(SetCompositionState(LayerComposition, bool))
     98   MAKE_NO_OP(GetClientTargetSupport(uint32_t, uint32_t, LayerBufferFormat,
     99                                     const ColorMetaData &))
    100   std::string Dump() { return ""; }
    101 
    102  private:
    103   bool active_ = false;
    104   DisplayState state_ = kStateOff;
    105   DisplayConfigVariableInfo fb_config_ = {};
    106 };
    107 
    108 }  // namespace sdm
    109 
    110 #endif  // __DISPLAY_NULL_H__
    111