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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  * Copyright (C)2012-2014, The Linux Foundation. All rights reserved.
      4  *
      5  * Not a Contribution, Apache license notifications and license are retained
      6  * for attribution purposes only.
      7  *
      8  * Licensed under the Apache License, Version 2.0 (the "License");
      9  * you may not use this file except in compliance with the License.
     10  * You may obtain a copy of the License at
     11  *
     12  *      http://www.apache.org/licenses/LICENSE-2.0
     13  *
     14  * Unless required by applicable law or agreed to in writing, software
     15  * distributed under the License is distributed on an "AS IS" BASIS,
     16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     17  * See the License for the specific language governing permissions and
     18  * limitations under the License.
     19  */
     20 
     21 #ifndef HWC_UTILS_H
     22 #define HWC_UTILS_H
     23 
     24 #define DEBUG_MDPDOWNSCALE 0
     25 #define HWC_REMOVE_DEPRECATED_VERSIONS 1
     26 
     27 #include <fcntl.h>
     28 #include <math.h>
     29 #include <hardware/hwcomposer.h>
     30 #include <gr.h>
     31 #include <gralloc_priv.h>
     32 #include <utils/String8.h>
     33 #include "qdMetaData.h"
     34 #include "mdp_version.h"
     35 #include <overlayUtils.h>
     36 #include <overlayRotator.h>
     37 #include <EGL/egl.h>
     38 
     39 
     40 #define ALIGN_TO(x, align)     (((x) + ((align)-1)) & ~((align)-1))
     41 #define LIKELY( exp )       (__builtin_expect( (exp) != 0, true  ))
     42 #define UNLIKELY( exp )     (__builtin_expect( (exp) != 0, false ))
     43 #define MAX_NUM_APP_LAYERS 32
     44 #define MAX_NUM_BLEND_STAGES 16
     45 #define MIN_DISPLAY_XRES 200
     46 #define MIN_DISPLAY_YRES 200
     47 #define HWC_WFDDISPSYNC_LOG 0
     48 #define STR(f) #f;
     49 // Max number of PTOR layers handled
     50 #define MAX_PTOR_LAYERS 2
     51 #define MAX_NUM_COLOR_MODES 32
     52 
     53 //Fwrd decls
     54 struct hwc_context_t;
     55 
     56 namespace ovutils = overlay::utils;
     57 
     58 namespace overlay {
     59 class Overlay;
     60 class Rotator;
     61 class RotMgr;
     62 }
     63 
     64 namespace qhwc {
     65 //fwrd decl
     66 class QueuedBufferStore;
     67 class HDMIDisplay;
     68 class VirtualDisplay;
     69 class IFBUpdate;
     70 class IVideoOverlay;
     71 class MDPComp;
     72 class CopyBit;
     73 class HwcDebug;
     74 class AssertiveDisplay;
     75 class HWCVirtualVDS;
     76 
     77 
     78 struct MDPInfo {
     79     int version;
     80     char panel;
     81     bool hasOverlay;
     82 };
     83 
     84 struct DisplayAttributes {
     85     uint32_t refreshRate;
     86     uint32_t dynRefreshRate;
     87     uint32_t vsync_period; //nanos
     88     uint32_t xres;
     89     uint32_t yres;
     90     uint32_t stride;
     91     float xdpi;
     92     float ydpi;
     93     bool secure;
     94     int fd;
     95     bool connected; //Applies only to pluggable disp.
     96     //Connected does not mean it ready to use.
     97     //It should be active also. (UNBLANKED)
     98     bool isActive;
     99     // In pause state, composition is bypassed
    100     // used for WFD displays and in QDCM calibration mode
    101     bool isPause;
    102     // To trigger padding round to clean up mdp
    103     // pipes
    104     bool isConfiguring;
    105     // Indicates whether external/virtual display is in MDP scaling mode
    106     bool mMDPScalingMode;
    107     // Ext dst Rect
    108     hwc_rect_t mDstRect;
    109     //Action safe attributes
    110     // Flag to indicate the presence of action safe dimensions for external
    111     bool mActionSafePresent;
    112     int mAsWidthRatio;
    113     int mAsHeightRatio;
    114 
    115     //If property fbsize set via adb shell debug.hwc.fbsize = XRESxYRES
    116     //following fields are used.
    117     bool customFBSize;
    118     uint32_t xres_new;
    119     uint32_t yres_new;
    120 
    121 };
    122 
    123 struct ListStats {
    124     int numAppLayers; //Total - 1, excluding FB layer.
    125     int skipCount;
    126     int fbLayerIndex; //Always last for now. = numAppLayers
    127     //Video specific
    128     int yuvCount;
    129     int yuvIndices[MAX_NUM_APP_LAYERS];
    130     bool preMultipliedAlpha;
    131     int yuv4k2kIndices[MAX_NUM_APP_LAYERS];
    132     int yuv4k2kCount;
    133     // Notifies hwcomposer about the start and end of animation
    134     // This will be set to true during animation, otherwise false.
    135     bool isDisplayAnimating;
    136     bool secureUI; // Secure display layer
    137     bool isSecurePresent;
    138     hwc_rect_t lRoi;  //left ROI
    139     hwc_rect_t rRoi;  //right ROI. Unused in single DSI panels.
    140     //App Buffer Composition index
    141     int  renderBufIndexforABC;
    142     // Secure RGB specific
    143     int secureRGBCount;
    144     int secureRGBIndices[MAX_NUM_APP_LAYERS];
    145     //dyn refresh rate-Client requested refreshrate
    146     uint32_t refreshRateRequest;
    147     // Flag related to windowboxing feature
    148     bool mAIVVideoMode;
    149 };
    150 
    151 //PTOR Comp info
    152 struct PtorInfo {
    153     int count;
    154     int layerIndex[MAX_PTOR_LAYERS];
    155     hwc_rect_t displayFrame[MAX_PTOR_LAYERS];
    156     bool isActive() { return (count>0); }
    157     int getPTORArrayIndex(int index) {
    158         int idx = -1;
    159         for(int i = 0; i < count; i++) {
    160             if(index == layerIndex[i])
    161                 idx = i;
    162         }
    163         return idx;
    164     }
    165 };
    166 
    167 struct LayerProp {
    168     uint32_t mFlags; //qcom specific layer flags
    169     LayerProp():mFlags(0){};
    170 };
    171 
    172 struct VsyncState {
    173     bool enable;
    174     bool fakevsync;
    175     bool debug;
    176 };
    177 
    178 struct BwcPM {
    179     static void setBwc(const hwc_context_t *ctx, const int& dpy,
    180             const private_handle_t *hnd,
    181             const hwc_rect_t& crop, const hwc_rect_t& dst,
    182             const int& transform, const int& downscale,
    183             ovutils::eMdpFlags& mdpFlags);
    184 };
    185 
    186 // LayerProp::flag values
    187 enum {
    188     HWC_MDPCOMP = 0x00000001,
    189     HWC_COPYBIT = 0x00000002,
    190 };
    191 
    192 // AIV specific flags
    193 enum {
    194     HWC_AIV_VIDEO = 0x80000000,
    195     HWC_AIV_CC    = 0x40000000,
    196 };
    197 
    198 // HAL specific features
    199 enum {
    200     HWC_COLOR_FILL = 0x00000008,
    201     HWC_FORMAT_RB_SWAP = 0x00000040,
    202 };
    203 
    204 /* External Display states */
    205 enum {
    206     EXTERNAL_OFFLINE = 0,
    207     EXTERNAL_ONLINE,
    208     EXTERNAL_PAUSE,
    209     EXTERNAL_RESUME,
    210     EXTERNAL_MAXSTATES
    211 };
    212 
    213 class LayerRotMap {
    214 public:
    215     LayerRotMap() { reset(); }
    216     void add(hwc_layer_1_t* layer, overlay::Rotator *rot);
    217     //Resets the mapping of layer to rotator
    218     void reset();
    219     //Clears mappings and existing rotator fences
    220     //Intended to be used during errors
    221     void clear();
    222     uint32_t getCount() const;
    223     hwc_layer_1_t* getLayer(uint32_t index) const;
    224     overlay::Rotator* getRot(uint32_t index) const;
    225     bool isRotCached(uint32_t index) const;
    226     void setReleaseFd(const int& fence);
    227 private:
    228     hwc_layer_1_t* mLayer[overlay::RotMgr::MAX_ROT_SESS];
    229     overlay::Rotator* mRot[overlay::RotMgr::MAX_ROT_SESS];
    230     uint32_t mCount;
    231 };
    232 
    233 //ColorModes for primary displays
    234 class ColorMode {
    235 public:
    236     void init();
    237     void destroy();
    238     int32_t getNumModes() { return mNumModes; }
    239     const int32_t* getModeList() { return mModeList; }
    240     int32_t getModeForIndex(int32_t index);
    241     int32_t getIndexForMode(int32_t mode);
    242     int applyDefaultMode();
    243     int applyModeByID(int modeID);
    244     int applyModeByIndex(int index);
    245     int setDefaultMode(int modeID);
    246     int getActiveModeIndex() { return mCurModeIndex; }
    247 private:
    248     int32_t (*fnGetNumModes)(int /*dispID*/);
    249     int32_t (*fnGetCurrentMode)(int /*dispID*/);
    250     int32_t (*fnGetModeList)(int32_t* /*mModeList*/, int32_t* /*current default*/,
    251             int32_t /*dispID*/);
    252     int (*fnApplyDefaultMode)(int /*dispID*/);
    253     int (*fnApplyModeById)(int /*modeID*/, int /*dispID*/);
    254     int (*fnSetDefaultMode)(int /*modeID*/, int /*dispID*/);
    255     int (*fnDeleteInstance)();
    256 
    257     void*     mModeHandle = NULL;
    258     int32_t   mModeList[MAX_NUM_COLOR_MODES];
    259     int32_t   mNumModes = 0;
    260     int32_t   mCurModeIndex = 0;
    261     int32_t   mCurMode = 0;
    262 
    263 };
    264 
    265 inline uint32_t LayerRotMap::getCount() const {
    266     return mCount;
    267 }
    268 
    269 inline hwc_layer_1_t* LayerRotMap::getLayer(uint32_t index) const {
    270     if(index >= mCount) return NULL;
    271     return mLayer[index];
    272 }
    273 
    274 inline overlay::Rotator* LayerRotMap::getRot(uint32_t index) const {
    275     if(index >= mCount) return NULL;
    276     return mRot[index];
    277 }
    278 
    279 inline hwc_rect_t integerizeSourceCrop(const hwc_frect_t& cropF) {
    280     hwc_rect_t cropI = {0,0,0,0};
    281     cropI.left = int(ceilf(cropF.left));
    282     cropI.top = int(ceilf(cropF.top));
    283     cropI.right = int(floorf(cropF.right));
    284     cropI.bottom = int(floorf(cropF.bottom));
    285     return cropI;
    286 }
    287 
    288 inline bool isNonIntegralSourceCrop(const hwc_frect_t& cropF) {
    289     if(cropF.left - roundf(cropF.left)     ||
    290        cropF.top - roundf(cropF.top)       ||
    291        cropF.right - roundf(cropF.right)   ||
    292        cropF.bottom - roundf(cropF.bottom))
    293         return true;
    294     else
    295         return false;
    296 }
    297 
    298 // -----------------------------------------------------------------------------
    299 // Utility functions - implemented in hwc_utils.cpp
    300 void dumpLayer(hwc_layer_1_t const* l);
    301 void setListStats(hwc_context_t *ctx, hwc_display_contents_1_t *list,
    302         int dpy);
    303 void initContext(hwc_context_t *ctx);
    304 void closeContext(hwc_context_t *ctx);
    305 //Crops source buffer against destination and FB boundaries
    306 void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
    307                          const hwc_rect_t& scissor, int orient);
    308 void getNonWormholeRegion(hwc_display_contents_1_t* list,
    309                               hwc_rect_t& nwr);
    310 bool isSecuring(hwc_context_t* ctx, hwc_layer_1_t const* layer);
    311 bool isSecureModePolicy(int mdpVersion);
    312 // Returns true, if the input layer format is supported by rotator
    313 bool isRotatorSupportedFormat(private_handle_t *hnd);
    314 //Returns true, if the layer is YUV or the layer has been rendered by CPU
    315 bool isRotationDoable(hwc_context_t *ctx, private_handle_t *hnd);
    316 bool isExternalActive(hwc_context_t* ctx);
    317 bool isAlphaScaled(hwc_layer_1_t const* layer);
    318 bool needsScaling(hwc_layer_1_t const* layer);
    319 bool isDownscaleRequired(hwc_layer_1_t const* layer);
    320 bool needsScalingWithSplit(hwc_context_t* ctx, hwc_layer_1_t const* layer,
    321                            const int& dpy);
    322 void sanitizeSourceCrop(hwc_rect_t& cropL, hwc_rect_t& cropR,
    323                         private_handle_t *hnd);
    324 bool isAlphaPresent(hwc_layer_1_t const* layer);
    325 int hwc_vsync_control(hwc_context_t* ctx, int dpy, int enable);
    326 int getBlending(int blending);
    327 bool isGLESOnlyComp(hwc_context_t *ctx, const int& dpy);
    328 void reset_layer_prop(hwc_context_t* ctx, int dpy, int numAppLayers);
    329 bool isAbcInUse(hwc_context_t *ctx);
    330 
    331 void dumpBuffer(private_handle_t *ohnd, char *bufferName);
    332 void updateDisplayInfo(hwc_context_t* ctx, int dpy);
    333 void resetDisplayInfo(hwc_context_t* ctx, int dpy);
    334 void initCompositionResources(hwc_context_t* ctx, int dpy);
    335 void destroyCompositionResources(hwc_context_t* ctx, int dpy);
    336 void clearPipeResources(hwc_context_t* ctx, int dpy);
    337 
    338 //Helper function to dump logs
    339 void dumpsys_log(android::String8& buf, const char* fmt, ...);
    340 
    341 int getExtOrientation(hwc_context_t* ctx);
    342 bool isValidRect(const hwc_rect_t& rect);
    343 hwc_rect_t deductRect(const hwc_rect_t& rect1, const hwc_rect_t& rect2);
    344 bool isSameRect(const hwc_rect& rect1, const hwc_rect& rect2);
    345 hwc_rect_t moveRect(const hwc_rect_t& rect, const int& x_off, const int& y_off);
    346 hwc_rect_t getIntersection(const hwc_rect_t& rect1, const hwc_rect_t& rect2);
    347 hwc_rect_t getUnion(const hwc_rect_t& rect1, const hwc_rect_t& rect2);
    348 void optimizeLayerRects(const hwc_display_contents_1_t *list);
    349 bool areLayersIntersecting(const hwc_layer_1_t* layer1,
    350         const hwc_layer_1_t* layer2);
    351 bool operator ==(const hwc_rect_t& lhs, const hwc_rect_t& rhs);
    352 bool layerUpdating(const hwc_layer_1_t* layer);
    353 
    354 // returns true if Action safe dimensions are set and target supports Actionsafe
    355 bool isActionSafePresent(hwc_context_t *ctx, int dpy);
    356 
    357 /* Calculates the destination position based on the action safe rectangle */
    358 void getActionSafePosition(hwc_context_t *ctx, int dpy, hwc_rect_t& dst);
    359 
    360 void getAspectRatioPosition(hwc_context_t* ctx, int dpy, int extOrientation,
    361                                 hwc_rect_t& inRect, hwc_rect_t& outRect);
    362 
    363 uint32_t roundOff(uint32_t refreshRate);
    364 
    365 void setRefreshRate(hwc_context_t *ctx, int dpy, uint32_t refreshRate);
    366 
    367 bool isPrimaryPortrait(hwc_context_t *ctx);
    368 
    369 bool isOrientationPortrait(hwc_context_t *ctx);
    370 
    371 void calcExtDisplayPosition(hwc_context_t *ctx,
    372                                private_handle_t *hnd,
    373                                int dpy,
    374                                hwc_rect_t& sourceCrop,
    375                                hwc_rect_t& displayFrame,
    376                                int& transform,
    377                                ovutils::eTransform& orient);
    378 
    379 // Returns the orientation that needs to be set on external for
    380 // BufferMirrirMode(Sidesync)
    381 int getMirrorModeOrientation(hwc_context_t *ctx);
    382 
    383 /* Get External State names */
    384 const char* getExternalDisplayState(uint32_t external_state);
    385 
    386 // Resets display ROI to full panel resoluion
    387 void resetROI(hwc_context_t *ctx, const int dpy);
    388 
    389 // Modifies ROI even from middle of the screen
    390 hwc_rect expandROIFromMidPoint(hwc_rect roi, hwc_rect fullFrame);
    391 
    392 // Aligns updating ROI to panel restrictions
    393 hwc_rect_t getSanitizeROI(struct hwc_rect roi, hwc_rect boundary);
    394 
    395 // Handles wfd Pause and resume events
    396 void handle_pause(hwc_context_t *ctx, int dpy);
    397 void handle_resume(hwc_context_t *ctx, int dpy);
    398 
    399 // Handle ONLINE/OFFLINE for HDMI display
    400 void handle_online(hwc_context_t* ctx, int dpy);
    401 void handle_offline(hwc_context_t* ctx, int dpy);
    402 
    403 //Close acquireFenceFds of all layers of incoming list
    404 void closeAcquireFds(hwc_display_contents_1_t* list);
    405 
    406 //Sync point impl.
    407 int hwc_sync(hwc_context_t *ctx, hwc_display_contents_1_t* list, int dpy,
    408         int fd);
    409 
    410 //Sets appropriate mdp flags for a layer.
    411 void setMdpFlags(hwc_context_t *ctx, hwc_layer_1_t *layer,
    412         ovutils::eMdpFlags &mdpFlags,
    413         int rotDownscale, int transform);
    414 
    415 int configRotator(overlay::Rotator *rot, ovutils::Whf& whf,
    416         hwc_rect_t& crop, const ovutils::eMdpFlags& mdpFlags,
    417         const ovutils::eTransform& orient, const int& downscale);
    418 
    419 int configMdp(overlay::Overlay *ov, const ovutils::PipeArgs& parg,
    420         const ovutils::eTransform& orient, const hwc_rect_t& crop,
    421         const hwc_rect_t& pos, const MetaData_t *metadata,
    422         const ovutils::eDest& dest);
    423 
    424 int configColorLayer(hwc_context_t *ctx, hwc_layer_1_t *layer, const int& dpy,
    425         ovutils::eMdpFlags& mdpFlags, ovutils::eZorder& z,
    426         const ovutils::eDest& dest);
    427 
    428 void updateSource(ovutils::eTransform& orient, ovutils::Whf& whf,
    429         hwc_rect_t& crop, overlay::Rotator *rot);
    430 
    431 bool isZoomModeEnabled(hwc_rect_t crop);
    432 void updateCropAIVVideoMode(hwc_context_t *ctx, hwc_rect_t& crop, int dpy);
    433 void updateDestAIVVideoMode(hwc_context_t *ctx, hwc_rect_t& dst, int dpy);
    434 void updateCoordinates(hwc_context_t *ctx, hwc_rect_t& crop,
    435                            hwc_rect_t& dst, int dpy);
    436 
    437 //Routine to configure low resolution panels (<= 2048 width)
    438 int configureNonSplit(hwc_context_t *ctx, hwc_layer_1_t *layer, const int& dpy,
    439         ovutils::eMdpFlags& mdpFlags, ovutils::eZorder& z,
    440         const ovutils::eDest& dest,
    441         overlay::Rotator **rot);
    442 
    443 //Routine to configure high resolution panels (> 2048 width)
    444 int configureSplit(hwc_context_t *ctx, hwc_layer_1_t *layer, const int& dpy,
    445         ovutils::eMdpFlags& mdpFlags, ovutils::eZorder& z,
    446         const ovutils::eDest& lDest,
    447         const ovutils::eDest& rDest, overlay::Rotator **rot);
    448 
    449 //Routine to split and configure high resolution YUV layer (> 2048 width)
    450 int configureSourceSplit(hwc_context_t *ctx, hwc_layer_1_t *layer,
    451         const int& dpy,
    452         ovutils::eMdpFlags& mdpFlags, ovutils::eZorder& z,
    453         const ovutils::eDest& lDest,
    454         const ovutils::eDest& rDest, overlay::Rotator **rot);
    455 
    456 //On certain targets DMA pipes are used for rotation and they won't be available
    457 //for line operations. On a per-target basis we can restrict certain use cases
    458 //from using rotator, since we know before-hand that such scenarios can lead to
    459 //extreme unavailability of pipes. This can also be done via hybrid calculations
    460 //also involving many more variables like number of write-back interfaces etc,
    461 //but the variety of scenarios is too high to warrant that.
    462 bool canUseRotator(hwc_context_t *ctx, int dpy);
    463 
    464 int getLeftSplit(hwc_context_t *ctx, const int& dpy);
    465 
    466 bool isDisplaySplit(hwc_context_t* ctx, int dpy);
    467 
    468 int getRotDownscale(hwc_context_t *ctx, const hwc_layer_1_t *layer);
    469 
    470 // Set the GPU hint flag to high for MIXED/GPU composition only for
    471 // first frame after MDP to GPU/MIXED mode transition.
    472 // Set the GPU hint to default if the current composition type is GPU
    473 // due to idle fallback or MDP composition.
    474 void setGPUHint(hwc_context_t* ctx, hwc_display_contents_1_t* list);
    475 
    476 // Returns true if rect1 is peripheral to rect2, false otherwise.
    477 bool isPeripheral(const hwc_rect_t& rect1, const hwc_rect_t& rect2);
    478 
    479 // Applies default mode at boot
    480 void applyDefaultMode(hwc_context_t *ctx);
    481 
    482 // Inline utility functions
    483 static inline bool isSkipLayer(const hwc_layer_1_t* l) {
    484     return (UNLIKELY(l && (l->flags & HWC_SKIP_LAYER)));
    485 }
    486 
    487 static inline bool isAIVVideoLayer(const hwc_layer_1_t* l) {
    488     return (UNLIKELY(l && (l->flags & HWC_AIV_VIDEO)));
    489 }
    490 
    491 static inline bool isAIVCCLayer(const hwc_layer_1_t* l) {
    492     return (UNLIKELY(l && (l->flags & HWC_AIV_CC)));
    493 }
    494 
    495 // Returns true if the buffer is yuv
    496 static inline bool isYuvBuffer(const private_handle_t* hnd) {
    497     return (hnd && (hnd->bufferType == BUFFER_TYPE_VIDEO));
    498 }
    499 
    500 // Returns true if the buffer is yuv and exceeds the mixer width
    501 static inline bool isYUVSplitNeeded(const private_handle_t* hnd) {
    502     int maxPipeWidth = qdutils::MDPVersion::getInstance().getMaxPipeWidth();
    503     return (hnd && (hnd->bufferType == BUFFER_TYPE_VIDEO) &&
    504             (hnd->width > maxPipeWidth));
    505 }
    506 
    507 // Returns true if the buffer is secure
    508 static inline bool isSecureBuffer(const private_handle_t* hnd) {
    509     return (hnd && (private_handle_t::PRIV_FLAGS_SECURE_BUFFER & hnd->flags));
    510 }
    511 
    512 // Returns true if the buffer is protected
    513 static inline bool isProtectedBuffer(const private_handle_t* hnd) {
    514     return (hnd && (private_handle_t::PRIV_FLAGS_PROTECTED_BUFFER & hnd->flags));
    515 }
    516 
    517 
    518 static inline bool isTileRendered(const private_handle_t* hnd) {
    519     return (hnd && (private_handle_t::PRIV_FLAGS_TILE_RENDERED & hnd->flags));
    520 }
    521 
    522 //Return true if the buffer is intended for Secure Display
    523 static inline bool isSecureDisplayBuffer(const private_handle_t* hnd) {
    524     return (hnd && (hnd->flags & private_handle_t::PRIV_FLAGS_SECURE_DISPLAY));
    525 }
    526 
    527 static inline int getWidth(const private_handle_t* hnd) {
    528     MetaData_t *metadata = reinterpret_cast<MetaData_t*>(hnd->base_metadata);
    529     if(metadata && metadata->operation & UPDATE_BUFFER_GEOMETRY) {
    530         return metadata->bufferDim.sliceWidth;
    531     }
    532     return hnd->width;
    533 }
    534 
    535 static inline int getHeight(const private_handle_t* hnd) {
    536     MetaData_t *metadata = reinterpret_cast<MetaData_t*>(hnd->base_metadata);
    537     if(metadata && metadata->operation & UPDATE_BUFFER_GEOMETRY) {
    538         return metadata->bufferDim.sliceHeight;
    539     }
    540     return hnd->height;
    541 }
    542 
    543 template<typename T> inline T max(T a, T b) { return (a > b) ? a : b; }
    544 template<typename T> inline T min(T a, T b) { return (a < b) ? a : b; }
    545 
    546 // Initialize uevent thread
    547 void init_uevent_thread(hwc_context_t* ctx);
    548 // Initialize vsync thread
    549 void init_vsync_thread(hwc_context_t* ctx);
    550 
    551 inline void getLayerResolution(const hwc_layer_1_t* layer,
    552                                int& width, int& height) {
    553     hwc_rect_t displayFrame  = layer->displayFrame;
    554     width = displayFrame.right - displayFrame.left;
    555     height = displayFrame.bottom - displayFrame.top;
    556 }
    557 
    558 static inline int openFb(int dpy) {
    559     int fd = -1;
    560     const char *devtmpl = "/dev/graphics/fb%u";
    561     char name[64] = {0};
    562     snprintf(name, 64, devtmpl, dpy);
    563     fd = open(name, O_RDWR);
    564     return fd;
    565 }
    566 
    567 template <class T>
    568 inline void swap(T& a, T& b) {
    569     T tmp = a;
    570     a = b;
    571     b = tmp;
    572 }
    573 
    574 }; //qhwc namespace
    575 
    576 enum eAnimationState{
    577     ANIMATION_STOPPED,
    578     ANIMATION_STARTED,
    579 };
    580 
    581 enum eCompositionState {
    582     COMPOSITION_STATE_MDP = 0,        // Set if composition type is MDP
    583     COMPOSITION_STATE_GPU,            // Set if composition type is GPU or MIXED
    584     COMPOSITION_STATE_IDLE_FALLBACK,  // Set if it is idlefallback
    585 };
    586 
    587 // Structure holds the information about the GPU hint.
    588 struct gpu_hint_info {
    589     // system level flag to enable gpu_perf_mode
    590     bool mGpuPerfModeEnable;
    591     // Stores the current GPU performance mode DEFAULT/HIGH
    592     bool mCurrGPUPerfMode;
    593     // Stores the compositon state GPU, MDP or IDLE_FALLBACK
    594     bool mCompositionState;
    595     // Stores the EGLContext of current process
    596     EGLContext mEGLContext;
    597     // Stores the EGLDisplay of current process
    598     EGLDisplay mEGLDisplay;
    599 };
    600 
    601 // -----------------------------------------------------------------------------
    602 // HWC context
    603 // This structure contains overall state
    604 struct hwc_context_t {
    605     hwc_composer_device_1_t device;
    606     const hwc_procs_t* proc;
    607 
    608     //CopyBit objects
    609     qhwc::CopyBit *mCopyBit[HWC_NUM_DISPLAY_TYPES];
    610 
    611     //Overlay object - NULL for non overlay devices
    612     overlay::Overlay *mOverlay;
    613     //Holds a few rot objects
    614     overlay::RotMgr *mRotMgr;
    615 
    616     //Primary and external FB updater
    617     qhwc::IFBUpdate *mFBUpdate[HWC_NUM_DISPLAY_TYPES];
    618     // HDMI display related object. Used to configure/teardown
    619     // HDMI when it is connected as primary or external.
    620     qhwc::HDMIDisplay *mHDMIDisplay;
    621     qhwc::MDPInfo mMDP;
    622     qhwc::VsyncState vstate;
    623     qhwc::DisplayAttributes dpyAttr[HWC_NUM_DISPLAY_TYPES];
    624     qhwc::ListStats listStats[HWC_NUM_DISPLAY_TYPES];
    625     qhwc::LayerProp *layerProp[HWC_NUM_DISPLAY_TYPES];
    626     qhwc::MDPComp *mMDPComp[HWC_NUM_DISPLAY_TYPES];
    627     qhwc::HwcDebug *mHwcDebug[HWC_NUM_DISPLAY_TYPES];
    628     hwc_rect_t mViewFrame[HWC_NUM_DISPLAY_TYPES];
    629     qhwc::AssertiveDisplay *mAD;
    630     eAnimationState mAnimationState[HWC_NUM_DISPLAY_TYPES];
    631     qhwc::HWCVirtualVDS *mHWCVirtual;
    632 
    633     // stores the #numHwLayers of the previous frame
    634     // for each display device
    635     int mPrevHwLayerCount[HWC_NUM_DISPLAY_TYPES];
    636 
    637     // stores the primary device orientation
    638     int deviceOrientation;
    639     //Securing in progress indicator
    640     bool mSecuring;
    641     //Display in secure mode indicator
    642     bool mSecureMode;
    643     //Lock to protect drawing data structures
    644     mutable Locker mDrawLock;
    645     //Drawing round when we use GPU
    646     bool isPaddingRound;
    647     // Used to mark composition cycle when DMA state change is required
    648     bool isDMAStateChanging;
    649     // External Orientation
    650     int mExtOrientation;
    651     //Flags the transition of a video session
    652     bool mVideoTransFlag;
    653     //Used for SideSync feature
    654     //which overrides the mExtOrientation
    655     bool mBufferMirrorMode;
    656     // Used to synchronize between WFD and Display modules
    657     mutable Locker mWfdSyncLock;
    658 
    659     qhwc::LayerRotMap *mLayerRotMap[HWC_NUM_DISPLAY_TYPES];
    660     // Panel reset flag will be set if BTA check fails
    661     bool mPanelResetStatus;
    662     // number of active Displays
    663     int numActiveDisplays;
    664     struct gpu_hint_info mGPUHintInfo;
    665     //App Buffer Composition
    666     bool enableABC;
    667     // PTOR Info
    668     qhwc::PtorInfo mPtorInfo;
    669     //Running in Thermal burst mode
    670     bool mThermalBurstMode;
    671     //Layers out of ROI
    672     bool copybitDrop[MAX_NUM_APP_LAYERS];
    673     // Flag related to windowboxing feature
    674     bool mWindowboxFeature;
    675     // This denotes the tolerance between video layer and external display
    676     // aspect ratio
    677     float mAspectRatioToleranceLevel;
    678     // Runtime switch for BWC for targets that support it
    679     bool mBWCEnabled;
    680     // Provides a way for OEM's to disable setting dynfps via metadata.
    681     bool mUseMetaDataRefreshRate;
    682    // Stores the hpd enabled status- avoids re-enabling HDP on suspend resume.
    683     bool mHPDEnabled;
    684     //Used to notify that default mode has been applied
    685     bool mDefaultModeApplied;
    686     //Manages color modes
    687     qhwc::ColorMode *mColorMode;
    688     // Indicates whether cool color temperature is enabled.
    689     bool mCoolColorTemperatureEnabled;
    690 };
    691 
    692 namespace qhwc {
    693 static inline bool isSkipPresent (hwc_context_t *ctx, int dpy) {
    694     return  ctx->listStats[dpy].skipCount;
    695 }
    696 
    697 static inline bool isYuvPresent (hwc_context_t *ctx, int dpy) {
    698     return  ctx->listStats[dpy].yuvCount;
    699 }
    700 
    701 static inline bool has90Transform(hwc_layer_1_t const* layer) {
    702     return ((layer->transform & HWC_TRANSFORM_ROT_90) &&
    703             !(layer->flags & HWC_COLOR_FILL));
    704 }
    705 
    706 inline bool isSecurePresent(hwc_context_t *ctx, int dpy) {
    707     return ctx->listStats[dpy].isSecurePresent;
    708 }
    709 
    710 static inline bool isSecondaryConfiguring(hwc_context_t* ctx) {
    711     return (ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].isConfiguring ||
    712             ctx->dpyAttr[HWC_DISPLAY_VIRTUAL].isConfiguring);
    713 }
    714 
    715 static inline bool isSecondaryConnected(hwc_context_t* ctx) {
    716     return (ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].connected ||
    717             ctx->dpyAttr[HWC_DISPLAY_VIRTUAL].connected);
    718 }
    719 
    720 /* Return Virtual Display connection status */
    721 static inline bool isVDConnected(hwc_context_t* ctx) {
    722     return ctx->dpyAttr[HWC_DISPLAY_VIRTUAL].connected;
    723 }
    724 
    725 inline uint32_t getLayerClock(const uint32_t& dstW, const uint32_t& dstH,
    726         const uint32_t& srcH) {
    727     return max(dstW, (srcH * dstW) / dstH);
    728 }
    729 
    730 };
    731 
    732 #endif //HWC_UTILS_H
    733