hwc_utils.h revision 83f9f73c45da200a06244749e4f21a632ecc01ba
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * Copyright (C)2012-2013, 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 HWC_REMOVE_DEPRECATED_VERSIONS 1 25#include <fcntl.h> 26#include <math.h> 27#include <hardware/hwcomposer.h> 28#include <gr.h> 29#include <gralloc_priv.h> 30#include <utils/String8.h> 31#include <linux/fb.h> 32#include "qdMetaData.h" 33#include <overlayUtils.h> 34 35#define ALIGN_TO(x, align) (((x) + ((align)-1)) & ~((align)-1)) 36#define LIKELY( exp ) (__builtin_expect( (exp) != 0, true )) 37#define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false )) 38#define MAX_NUM_APP_LAYERS 32 39 40// For support of virtual displays 41#define MAX_DISPLAYS (HWC_NUM_DISPLAY_TYPES) 42 43//Fwrd decls 44struct hwc_context_t; 45 46namespace ovutils = overlay::utils; 47 48namespace overlay { 49class Overlay; 50class Rotator; 51class RotMgr; 52} 53 54namespace qhwc { 55//fwrd decl 56class QueuedBufferStore; 57class ExternalDisplay; 58class IFBUpdate; 59class IVideoOverlay; 60class MDPComp; 61class CopyBit; 62class AssertiveDisplay; 63 64 65struct MDPInfo { 66 int version; 67 char panel; 68 bool hasOverlay; 69}; 70 71struct DisplayAttributes { 72 uint32_t vsync_period; //nanos 73 uint32_t xres; 74 uint32_t yres; 75 uint32_t stride; 76 float xdpi; 77 float ydpi; 78 int fd; 79 bool connected; //Applies only to secondary displays 80 //Connected does not mean it ready to use. 81 //It should be active also. (UNBLANKED) 82 bool isActive; 83 // In pause state, composition is bypassed 84 // used for WFD displays only 85 bool isPause; 86 //Secondary displays will have this set until they are able to acquire 87 //pipes. 88 bool isConfiguring; 89}; 90 91struct ListStats { 92 int numAppLayers; //Total - 1, excluding FB layer. 93 int skipCount; 94 int fbLayerIndex; //Always last for now. = numAppLayers 95 //Video specific 96 int yuvCount; 97 int yuvIndices[MAX_NUM_APP_LAYERS]; 98 bool needsAlphaScale; 99 bool preMultipliedAlpha; 100 bool planeAlpha; 101}; 102 103struct LayerProp { 104 uint32_t mFlags; //qcom specific layer flags 105 LayerProp():mFlags(0) {}; 106}; 107 108struct VsyncState { 109 bool enable; 110 bool fakevsync; 111}; 112 113struct BwcPM { 114 static void setBwc(hwc_context_t *ctx, const hwc_rect_t& crop, 115 const hwc_rect_t& dst, const int& transform, 116 ovutils::eMdpFlags& mdpFlags); 117}; 118 119// LayerProp::flag values 120enum { 121 HWC_MDPCOMP = 0x00000001, 122 HWC_COPYBIT = 0x00000002, 123}; 124 125class LayerRotMap { 126public: 127 LayerRotMap() { reset(); } 128 enum { MAX_SESS = 3 }; 129 void add(hwc_layer_1_t* layer, overlay::Rotator *rot); 130 void reset(); 131 uint32_t getCount() const; 132 hwc_layer_1_t* getLayer(uint32_t index) const; 133 overlay::Rotator* getRot(uint32_t index) const; 134 void setReleaseFd(const int& fence); 135private: 136 hwc_layer_1_t* mLayer[MAX_SESS]; 137 overlay::Rotator* mRot[MAX_SESS]; 138 uint32_t mCount; 139}; 140 141inline uint32_t LayerRotMap::getCount() const { 142 return mCount; 143} 144 145inline hwc_layer_1_t* LayerRotMap::getLayer(uint32_t index) const { 146 if(index >= mCount) return NULL; 147 return mLayer[index]; 148} 149 150inline overlay::Rotator* LayerRotMap::getRot(uint32_t index) const { 151 if(index >= mCount) return NULL; 152 return mRot[index]; 153} 154 155inline hwc_rect_t integerizeSourceCrop(const hwc_frect_t& cropF) { 156 hwc_rect_t cropI = {0}; 157 cropI.left = int(ceilf(cropF.left)); 158 cropI.top = int(ceilf(cropF.top)); 159 cropI.right = int(floorf(cropF.right)); 160 cropI.bottom = int(floorf(cropF.bottom)); 161 return cropI; 162} 163 164// ----------------------------------------------------------------------------- 165// Utility functions - implemented in hwc_utils.cpp 166void dumpLayer(hwc_layer_1_t const* l); 167void setListStats(hwc_context_t *ctx, const hwc_display_contents_1_t *list, 168 int dpy); 169void initContext(hwc_context_t *ctx); 170void closeContext(hwc_context_t *ctx); 171//Crops source buffer against destination and FB boundaries 172void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst, 173 const hwc_rect_t& scissor, int orient); 174void getNonWormholeRegion(hwc_display_contents_1_t* list, 175 hwc_rect_t& nwr); 176bool isSecuring(hwc_context_t* ctx, hwc_layer_1_t const* layer); 177bool isSecureModePolicy(int mdpVersion); 178//Secondary display hasnt acquired any pipes yet. 179//Secondary stands for external as well as virtual 180bool isSecondaryConfiguring(hwc_context_t* ctx); 181bool needsScaling(hwc_context_t* ctx, hwc_layer_1_t const* layer, const int& dpy); 182bool isAlphaPresent(hwc_layer_1_t const* layer); 183int hwc_vsync_control(hwc_context_t* ctx, int dpy, int enable); 184int getBlending(int blending); 185 186//Helper function to dump logs 187void dumpsys_log(android::String8& buf, const char* fmt, ...); 188 189/* Calculates the destination position based on the action safe rectangle */ 190void getActionSafePosition(hwc_context_t *ctx, int dpy, uint32_t& x, 191 uint32_t& y, uint32_t& w, uint32_t& h); 192 193//Close acquireFenceFds of all layers of incoming list 194void closeAcquireFds(hwc_display_contents_1_t* list); 195 196//Sync point impl. 197int hwc_sync(hwc_context_t *ctx, hwc_display_contents_1_t* list, int dpy, 198 int fd); 199 200//Trims a layer's source crop which is outside of screen boundary. 201void trimLayer(hwc_context_t *ctx, const int& dpy, const int& transform, 202 hwc_rect_t& crop, hwc_rect_t& dst); 203 204//Sets appropriate mdp flags for a layer. 205void setMdpFlags(hwc_layer_1_t *layer, 206 ovutils::eMdpFlags &mdpFlags, 207 int rotDownscale); 208 209int configRotator(overlay::Rotator *rot, const ovutils::Whf& whf, 210 hwc_rect_t& crop, const ovutils::eMdpFlags& mdpFlags, 211 const ovutils::eTransform& orient, const int& downscale); 212 213int configMdp(overlay::Overlay *ov, const ovutils::PipeArgs& parg, 214 const ovutils::eTransform& orient, const hwc_rect_t& crop, 215 const hwc_rect_t& pos, const MetaData_t *metadata, 216 const ovutils::eDest& dest); 217 218void updateSource(ovutils::eTransform& orient, ovutils::Whf& whf, 219 hwc_rect_t& crop); 220 221//Routine to configure low resolution panels (<= 2048 width) 222int configureLowRes(hwc_context_t *ctx, hwc_layer_1_t *layer, const int& dpy, 223 ovutils::eMdpFlags& mdpFlags, const ovutils::eZorder& z, 224 const ovutils::eIsFg& isFg, const ovutils::eDest& dest, 225 overlay::Rotator **rot); 226 227//Routine to configure high resolution panels (> 2048 width) 228int configureHighRes(hwc_context_t *ctx, hwc_layer_1_t *layer, const int& dpy, 229 ovutils::eMdpFlags& mdpFlags, const ovutils::eZorder& z, 230 const ovutils::eIsFg& isFg, const ovutils::eDest& lDest, 231 const ovutils::eDest& rDest, overlay::Rotator **rot); 232 233//On certain targets DMA pipes are used for rotation and they won't be available 234//for line operations. On a per-target basis we can restrict certain use cases 235//from using rotator, since we know before-hand that such scenarios can lead to 236//extreme unavailability of pipes. This can also be done via hybrid calculations 237//also involving many more variables like number of write-back interfaces etc, 238//but the variety of scenarios is too high to warrant that. 239bool canUseRotator(hwc_context_t *ctx); 240 241int getLeftSplit(hwc_context_t *ctx, const int& dpy); 242 243//Sets up composition objects for secondary displays when they are added. 244//Should be called with extlock held. 245void setupSecondaryObjs(hwc_context_t *ctx, const int& dpy); 246void clearSecondaryObjs(hwc_context_t *ctx, const int& dpy); 247 248// Inline utility functions 249static inline bool isSkipLayer(const hwc_layer_1_t* l) { 250 return (UNLIKELY(l && (l->flags & HWC_SKIP_LAYER))); 251} 252 253// Returns true if the buffer is yuv 254static inline bool isYuvBuffer(const private_handle_t* hnd) { 255 return (hnd && (hnd->bufferType == BUFFER_TYPE_VIDEO)); 256} 257 258// Returns true if the buffer is secure 259static inline bool isSecureBuffer(const private_handle_t* hnd) { 260 return (hnd && (private_handle_t::PRIV_FLAGS_SECURE_BUFFER & hnd->flags)); 261} 262//Return true if buffer is marked locked 263static inline bool isBufferLocked(const private_handle_t* hnd) { 264 return (hnd && (private_handle_t::PRIV_FLAGS_HWC_LOCK & hnd->flags)); 265} 266 267//Return true if buffer is for external display only 268static inline bool isExtOnly(const private_handle_t* hnd) { 269 return (hnd && (hnd->flags & private_handle_t::PRIV_FLAGS_EXTERNAL_ONLY)); 270} 271 272//Return true if buffer is for external display only with a BLOCK flag. 273static inline bool isExtBlock(const private_handle_t* hnd) { 274 return (hnd && (hnd->flags & private_handle_t::PRIV_FLAGS_EXTERNAL_BLOCK)); 275} 276 277//Return true if buffer is for external display only with a Close Caption flag. 278static inline bool isExtCC(const private_handle_t* hnd) { 279 return (hnd && (hnd->flags & private_handle_t::PRIV_FLAGS_EXTERNAL_CC)); 280} 281 282static inline int getWidth(const private_handle_t* hnd) { 283 if(isYuvBuffer(hnd)) { 284 MetaData_t *metadata = (MetaData_t *)hnd->base_metadata; 285 if(metadata && metadata->operation & UPDATE_BUFFER_GEOMETRY) { 286 return metadata->bufferDim.sliceWidth; 287 } 288 } 289 return hnd->width; 290} 291 292static inline int getHeight(const private_handle_t* hnd) { 293 if(isYuvBuffer(hnd)) { 294 MetaData_t *metadata = (MetaData_t *)hnd->base_metadata; 295 if(metadata && metadata->operation & UPDATE_BUFFER_GEOMETRY) { 296 return metadata->bufferDim.sliceHeight; 297 } 298 } 299 return hnd->height; 300} 301 302template<typename T> inline T max(T a, T b) { return (a > b) ? a : b; } 303template<typename T> inline T min(T a, T b) { return (a < b) ? a : b; } 304 305// Initialize uevent thread 306void init_uevent_thread(hwc_context_t* ctx); 307// Initialize vsync thread 308void init_vsync_thread(hwc_context_t* ctx); 309 310inline void getLayerResolution(const hwc_layer_1_t* layer, 311 int& width, int& height) { 312 hwc_rect_t displayFrame = layer->displayFrame; 313 width = displayFrame.right - displayFrame.left; 314 height = displayFrame.bottom - displayFrame.top; 315} 316 317static inline int openFb(int dpy) { 318 int fd = -1; 319 const char *devtmpl = "/dev/graphics/fb%u"; 320 char name[64] = {0}; 321 snprintf(name, 64, devtmpl, dpy); 322 fd = open(name, O_RDWR); 323 return fd; 324} 325 326template <class T> 327inline void swap(T& a, T& b) { 328 T tmp = a; 329 a = b; 330 b = tmp; 331} 332 333}; //qhwc namespace 334 335// ----------------------------------------------------------------------------- 336// HWC context 337// This structure contains overall state 338struct hwc_context_t { 339 hwc_composer_device_1_t device; 340 const hwc_procs_t* proc; 341 342 //CopyBit objects 343 qhwc::CopyBit *mCopyBit[MAX_DISPLAYS]; 344 345 //Overlay object - NULL for non overlay devices 346 overlay::Overlay *mOverlay; 347 //Holds a few rot objects 348 overlay::RotMgr *mRotMgr; 349 350 //Primary and external FB updater 351 qhwc::IFBUpdate *mFBUpdate[MAX_DISPLAYS]; 352 // External display related information 353 qhwc::ExternalDisplay *mExtDisplay; 354 qhwc::MDPInfo mMDP; 355 qhwc::VsyncState vstate; 356 qhwc::DisplayAttributes dpyAttr[MAX_DISPLAYS]; 357 qhwc::ListStats listStats[MAX_DISPLAYS]; 358 qhwc::LayerProp *layerProp[MAX_DISPLAYS]; 359 qhwc::LayerRotMap *mLayerRotMap[MAX_DISPLAYS]; 360 qhwc::MDPComp *mMDPComp[MAX_DISPLAYS]; 361 qhwc::AssertiveDisplay *mAD; 362 363 //Securing in progress indicator 364 bool mSecuring; 365 //Display in secure mode indicator 366 bool mSecureMode; 367 //Lock to protect drawing data structures 368 mutable Locker mDrawLock; 369 //Drawing round when we use GPU 370 bool isPaddingRound; 371 //Flags the transition of a video session 372 bool mVideoTransFlag; 373}; 374 375namespace qhwc { 376static inline bool isSkipPresent (hwc_context_t *ctx, int dpy) { 377 return ctx->listStats[dpy].skipCount; 378} 379 380static inline bool isYuvPresent (hwc_context_t *ctx, int dpy) { 381 return ctx->listStats[dpy].yuvCount; 382} 383}; 384 385#endif //HWC_UTILS_H 386