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      1 /*
      2  * Copyright (c) 2013 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 #include <gralloc_priv.h>
     30 #include <qdMetaData.h>
     31 #include <mdp_version.h>
     32 #include <hardware/hwcomposer.h>
     33 
     34 // This header is for clients to use to set/get global display configuration
     35 // The functions in this header run in the client process and wherever necessary
     36 // do a binder call to HWC to get/set data.
     37 // Only primary and external displays are supported here.
     38 // WiFi/virtual displays are not supported.
     39 
     40 namespace qdutils {
     41 
     42 // Use this enum to specify the dpy parameters where needed
     43 enum {
     44     DISPLAY_PRIMARY = 0,
     45     DISPLAY_EXTERNAL,
     46 };
     47 
     48 // Display Attributes that are available to clients of this library
     49 // Not to be confused with a similar struct in hwc_utils (in the hwc namespace)
     50 struct DisplayAttributes_t {
     51     uint32_t vsync_period; //nanoseconds
     52     uint32_t xres;
     53     uint32_t yres;
     54     float xdpi;
     55     float ydpi;
     56     char panel_type;
     57 };
     58 
     59 // Check if external display is connected. Useful to check before making
     60 // calls for external displays
     61 // Returns 1 if connected, 0 if disconnected, negative values on errors
     62 int isExternalConnected(void);
     63 
     64 // Get display vsync period which is in nanoseconds
     65 // i.e vsync_period = 1000000000l / fps
     66 // Returns 0 on success, negative values on errors
     67 int getDisplayAttributes(int dpy, DisplayAttributes_t& dpyattr);
     68 
     69 // Set HSIC data on a given display ID
     70 // Returns 0 on success, negative values on errors
     71 int setHSIC(int dpy, const HSICData_t& hsic_data);
     72 
     73 // get the active visible region for the display
     74 // Returns 0 on success, negative values on errors
     75 int getDisplayVisibleRegion(int dpy, hwc_rect_t &rect);
     76 }; //namespace
     77