hwc_copybit.cpp revision 5d6b4a0ade8ee378547c8f340079f37d468b287c
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#define DEBUG_COPYBIT 0 22#include <copybit.h> 23#include <utils/Timers.h> 24#include <mdp_version.h> 25#include "hwc_copybit.h" 26#include "comptype.h" 27#include "gr.h" 28 29namespace qhwc { 30 31struct range { 32 int current; 33 int end; 34}; 35struct region_iterator : public copybit_region_t { 36 37 region_iterator(hwc_region_t region) { 38 mRegion = region; 39 r.end = region.numRects; 40 r.current = 0; 41 this->next = iterate; 42 } 43 44private: 45 static int iterate(copybit_region_t const * self, copybit_rect_t* rect){ 46 if (!self || !rect) { 47 ALOGE("iterate invalid parameters"); 48 return 0; 49 } 50 51 region_iterator const* me = 52 static_cast<region_iterator const*>(self); 53 if (me->r.current != me->r.end) { 54 rect->l = me->mRegion.rects[me->r.current].left; 55 rect->t = me->mRegion.rects[me->r.current].top; 56 rect->r = me->mRegion.rects[me->r.current].right; 57 rect->b = me->mRegion.rects[me->r.current].bottom; 58 me->r.current++; 59 return 1; 60 } 61 return 0; 62 } 63 64 hwc_region_t mRegion; 65 mutable range r; 66}; 67 68void CopyBit::reset() { 69 mIsModeOn = false; 70 mCopyBitDraw = false; 71} 72 73bool CopyBit::canUseCopybitForYUV(hwc_context_t *ctx) { 74 // return true for non-overlay targets 75 if(ctx->mMDP.hasOverlay && ctx->mMDP.version >= qdutils::MDP_V4_0) { 76 return false; 77 } 78 return true; 79} 80 81bool CopyBit::canUseCopybitForRGB(hwc_context_t *ctx, 82 hwc_display_contents_1_t *list, 83 int dpy) { 84 int compositionType = qdutils::QCCompositionType:: 85 getInstance().getCompositionType(); 86 87 if (compositionType & qdutils::COMPOSITION_TYPE_DYN) { 88 // DYN Composition: 89 // use copybit, if (TotalRGBRenderArea < threashold * FB Area) 90 // this is done based on perf inputs in ICS 91 // TODO: Above condition needs to be re-evaluated in JB 92 int fbWidth = ctx->dpyAttr[dpy].xres; 93 int fbHeight = ctx->dpyAttr[dpy].yres; 94 unsigned int fbArea = (fbWidth * fbHeight); 95 unsigned int renderArea = getRGBRenderingArea(list); 96 ALOGD_IF (DEBUG_COPYBIT, "%s:renderArea %u, fbArea %u", 97 __FUNCTION__, renderArea, fbArea); 98 if (renderArea < (mDynThreshold * fbArea)) { 99 return true; 100 } 101 } else if ((compositionType & qdutils::COMPOSITION_TYPE_MDP)) { 102 // MDP composition, use COPYBIT always 103 return true; 104 } else if ((compositionType & qdutils::COMPOSITION_TYPE_C2D)) { 105 // C2D composition, use COPYBIT 106 return true; 107 } 108 return false; 109} 110 111unsigned int CopyBit::getRGBRenderingArea 112 (const hwc_display_contents_1_t *list) { 113 //Calculates total rendering area for RGB layers 114 unsigned int renderArea = 0; 115 unsigned int w=0, h=0; 116 // Skipping last layer since FrameBuffer layer should not affect 117 // which composition to choose 118 for (unsigned int i=0; i<list->numHwLayers -1; i++) { 119 private_handle_t *hnd = (private_handle_t *)list->hwLayers[i].handle; 120 if (hnd) { 121 if (BUFFER_TYPE_UI == hnd->bufferType) { 122 getLayerResolution(&list->hwLayers[i], w, h); 123 renderArea += (w*h); 124 } 125 } 126 } 127 return renderArea; 128} 129 130bool CopyBit::prepare(hwc_context_t *ctx, hwc_display_contents_1_t *list, 131 int dpy) { 132 133 if(mEngine == NULL) { 134 // No copybit device found - cannot use copybit 135 return false; 136 } 137 int compositionType = qdutils::QCCompositionType:: 138 getInstance().getCompositionType(); 139 140 if ((compositionType == qdutils::COMPOSITION_TYPE_GPU) || 141 (compositionType == qdutils::COMPOSITION_TYPE_CPU)) { 142 //GPU/CPU composition, don't change layer composition type 143 return true; 144 } 145 146 if(!(validateParams(ctx, list))) { 147 ALOGE("%s:Invalid Params", __FUNCTION__); 148 return false; 149 } 150 151 if(ctx->listStats[dpy].skipCount) { 152 //GPU will be anyways used 153 return false; 154 } 155 156 if (ctx->listStats[dpy].numAppLayers > MAX_NUM_APP_LAYERS) { 157 // Reached max layers supported by HWC. 158 return false; 159 } 160 161 bool useCopybitForYUV = canUseCopybitForYUV(ctx); 162 bool useCopybitForRGB = canUseCopybitForRGB(ctx, list, dpy); 163 LayerProp *layerProp = ctx->layerProp[dpy]; 164 size_t fbLayerIndex = ctx->listStats[dpy].fbLayerIndex; 165 hwc_layer_1_t *fbLayer = &list->hwLayers[fbLayerIndex]; 166 private_handle_t *fbHnd = (private_handle_t *)fbLayer->handle; 167 168 169 170 //Allocate render buffers if they're not allocated 171 if (useCopybitForYUV || useCopybitForRGB) { 172 int ret = allocRenderBuffers(fbHnd->width, 173 fbHnd->height, 174 fbHnd->format); 175 if (ret < 0) { 176 return false; 177 } else { 178 mCurRenderBufferIndex = (mCurRenderBufferIndex + 1) % 179 NUM_RENDER_BUFFERS; 180 } 181 } 182 183 // We cannot mix copybit layer with layers marked to be drawn on FB 184 if (!useCopybitForYUV && ctx->listStats[dpy].yuvCount) 185 return true; 186 187 // numAppLayers-1, as we iterate till 0th layer index 188 for (int i = ctx->listStats[dpy].numAppLayers-1; i >= 0 ; i--) { 189 private_handle_t *hnd = (private_handle_t *)list->hwLayers[i].handle; 190 191 if ((hnd->bufferType == BUFFER_TYPE_VIDEO && useCopybitForYUV) || 192 (hnd->bufferType == BUFFER_TYPE_UI && useCopybitForRGB)) { 193 layerProp[i].mFlags |= HWC_COPYBIT; 194 list->hwLayers[i].compositionType = HWC_OVERLAY; 195 mCopyBitDraw = true; 196 } else { 197 // We currently cannot mix copybit layers with layers marked to 198 // be drawn on the framebuffer or that are on the layer cache. 199 mCopyBitDraw = false; 200 //There is no need to reset layer properties here as we return in 201 //draw if mCopyBitDraw is false 202 break; 203 } 204 } 205 return true; 206} 207 208int CopyBit::clear (private_handle_t* hnd, hwc_rect_t& rect) 209{ 210 int ret = 0; 211 copybit_rect_t clear_rect = {rect.left, rect.top, 212 rect.right, 213 rect.bottom}; 214 215 copybit_image_t buf; 216 buf.w = ALIGN(getWidth(hnd),32); 217 buf.h = getHeight(hnd); 218 buf.format = hnd->format; 219 buf.base = (void *)hnd->base; 220 buf.handle = (native_handle_t *)hnd; 221 222 copybit_device_t *copybit = mEngine; 223 ret = copybit->clear(copybit, &buf, &clear_rect); 224 return ret; 225} 226 227bool CopyBit::draw(hwc_context_t *ctx, hwc_display_contents_1_t *list, 228 int dpy, int32_t *fd) { 229 // draw layers marked for COPYBIT 230 int retVal = true; 231 int copybitLayerCount = 0; 232 LayerProp *layerProp = ctx->layerProp[dpy]; 233 234 if(mCopyBitDraw == false) // there is no layer marked for copybit 235 return false ; 236 237 //render buffer 238 private_handle_t *renderBuffer = getCurrentRenderBuffer(); 239 if (!renderBuffer) { 240 ALOGE("%s: Render buffer layer handle is NULL", __FUNCTION__); 241 return false; 242 } 243 244 //Wait for the previous frame to complete before rendering onto it 245 if(mRelFd[0] >=0) { 246 sync_wait(mRelFd[0], 1000); 247 close(mRelFd[0]); 248 mRelFd[0] = -1; 249 } 250 251 if (ctx->mMDP.version >= qdutils::MDP_V4_0) { 252 //Clear the visible region on the render buffer 253 //XXX: Do this only when needed. 254 hwc_rect_t clearRegion; 255 getNonWormholeRegion(list, clearRegion); 256 clear(renderBuffer, clearRegion); 257 } 258 // numAppLayers-1, as we iterate from 0th layer index with HWC_COPYBIT flag 259 for (int i = 0; i <= (ctx->listStats[dpy].numAppLayers-1); i++) { 260 hwc_layer_1_t *layer = &list->hwLayers[i]; 261 if(!(layerProp[i].mFlags & HWC_COPYBIT)) { 262 ALOGD_IF(DEBUG_COPYBIT, "%s: Not Marked for copybit", __FUNCTION__); 263 continue; 264 } 265 int ret = -1; 266 if (list->hwLayers[i].acquireFenceFd != -1 267 && ctx->mMDP.version >= qdutils::MDP_V4_0) { 268 // Wait for acquire Fence on the App buffers. 269 ret = sync_wait(list->hwLayers[i].acquireFenceFd, 1000); 270 if(ret < 0) { 271 ALOGE("%s: sync_wait error!! error no = %d err str = %s", 272 __FUNCTION__, errno, strerror(errno)); 273 } 274 close(list->hwLayers[i].acquireFenceFd); 275 list->hwLayers[i].acquireFenceFd = -1; 276 } 277 retVal = drawLayerUsingCopybit(ctx, &(list->hwLayers[i]), 278 renderBuffer, dpy); 279 copybitLayerCount++; 280 if(retVal < 0) { 281 ALOGE("%s : drawLayerUsingCopybit failed", __FUNCTION__); 282 } 283 } 284 285 if (copybitLayerCount) { 286 copybit_device_t *copybit = getCopyBitDevice(); 287 // Async mode 288 copybit->flush_get_fence(copybit, fd); 289 } 290 return true; 291} 292 293int CopyBit::drawLayerUsingCopybit(hwc_context_t *dev, hwc_layer_1_t *layer, 294 private_handle_t *renderBuffer, int dpy) 295{ 296 hwc_context_t* ctx = (hwc_context_t*)(dev); 297 int err = 0, acquireFd; 298 if(!ctx) { 299 ALOGE("%s: null context ", __FUNCTION__); 300 return -1; 301 } 302 303 private_handle_t *hnd = (private_handle_t *)layer->handle; 304 if(!hnd) { 305 ALOGE("%s: invalid handle", __FUNCTION__); 306 return -1; 307 } 308 309 private_handle_t *fbHandle = (private_handle_t *)renderBuffer; 310 if(!fbHandle) { 311 ALOGE("%s: Framebuffer handle is NULL", __FUNCTION__); 312 return -1; 313 } 314 315 // Set the copybit source: 316 copybit_image_t src; 317 src.w = getWidth(hnd); 318 src.h = getHeight(hnd); 319 src.format = hnd->format; 320 src.base = (void *)hnd->base; 321 src.handle = (native_handle_t *)layer->handle; 322 src.horiz_padding = src.w - getWidth(hnd); 323 // Initialize vertical padding to zero for now, 324 // this needs to change to accomodate vertical stride 325 // if needed in the future 326 src.vert_padding = 0; 327 328 // Copybit source rect 329 hwc_rect_t sourceCrop = integerizeSourceCrop(layer->sourceCropf); 330 copybit_rect_t srcRect = {sourceCrop.left, sourceCrop.top, 331 sourceCrop.right, 332 sourceCrop.bottom}; 333 334 // Copybit destination rect 335 hwc_rect_t displayFrame = layer->displayFrame; 336 copybit_rect_t dstRect = {displayFrame.left, displayFrame.top, 337 displayFrame.right, 338 displayFrame.bottom}; 339 340 // Copybit dst 341 copybit_image_t dst; 342 dst.w = ALIGN(fbHandle->width,32); 343 dst.h = fbHandle->height; 344 dst.format = fbHandle->format; 345 dst.base = (void *)fbHandle->base; 346 dst.handle = (native_handle_t *)fbHandle; 347 348 copybit_device_t *copybit = mEngine; 349 350 int32_t screen_w = displayFrame.right - displayFrame.left; 351 int32_t screen_h = displayFrame.bottom - displayFrame.top; 352 int32_t src_crop_width = sourceCrop.right - sourceCrop.left; 353 int32_t src_crop_height = sourceCrop.bottom -sourceCrop.top; 354 355 // Copybit dst 356 float copybitsMaxScale = 357 (float)copybit->get(copybit,COPYBIT_MAGNIFICATION_LIMIT); 358 float copybitsMinScale = 359 (float)copybit->get(copybit,COPYBIT_MINIFICATION_LIMIT); 360 361 if((layer->transform == HWC_TRANSFORM_ROT_90) || 362 (layer->transform == HWC_TRANSFORM_ROT_270)) { 363 //swap screen width and height 364 int tmp = screen_w; 365 screen_w = screen_h; 366 screen_h = tmp; 367 } 368 private_handle_t *tmpHnd = NULL; 369 370 if(screen_w <=0 || screen_h<=0 ||src_crop_width<=0 || src_crop_height<=0 ) { 371 ALOGE("%s: wrong params for display screen_w=%d src_crop_width=%d \ 372 screen_w=%d src_crop_width=%d", __FUNCTION__, screen_w, 373 src_crop_width,screen_w,src_crop_width); 374 return -1; 375 } 376 377 float dsdx = (float)screen_w/src_crop_width; 378 float dtdy = (float)screen_h/src_crop_height; 379 380 float scaleLimitMax = copybitsMaxScale * copybitsMaxScale; 381 float scaleLimitMin = copybitsMinScale * copybitsMinScale; 382 if(dsdx > scaleLimitMax || 383 dtdy > scaleLimitMax || 384 dsdx < 1/scaleLimitMin || 385 dtdy < 1/scaleLimitMin) { 386 ALOGE("%s: greater than max supported size dsdx=%f dtdy=%f \ 387 scaleLimitMax=%f scaleLimitMin=%f", __FUNCTION__,dsdx,dtdy, 388 scaleLimitMax,1/scaleLimitMin); 389 return -1; 390 } 391 acquireFd = layer->acquireFenceFd; 392 if(dsdx > copybitsMaxScale || 393 dtdy > copybitsMaxScale || 394 dsdx < 1/copybitsMinScale || 395 dtdy < 1/copybitsMinScale){ 396 // The requested scale is out of the range the hardware 397 // can support. 398 ALOGE("%s:%d::Need to scale twice dsdx=%f, dtdy=%f,copybitsMaxScale=%f,\ 399 copybitsMinScale=%f,screen_w=%d,screen_h=%d \ 400 src_crop_width=%d src_crop_height=%d",__FUNCTION__,__LINE__, 401 dsdx,dtdy,copybitsMaxScale,1/copybitsMinScale,screen_w,screen_h, 402 src_crop_width,src_crop_height); 403 404 //Driver makes width and height as even 405 //that may cause wrong calculation of the ratio 406 //in display and crop.Hence we make 407 //crop width and height as even. 408 src_crop_width = (src_crop_width/2)*2; 409 src_crop_height = (src_crop_height/2)*2; 410 411 int tmp_w = src_crop_width; 412 int tmp_h = src_crop_height; 413 414 if (dsdx > copybitsMaxScale || dtdy > copybitsMaxScale ){ 415 tmp_w = src_crop_width*copybitsMaxScale; 416 tmp_h = src_crop_height*copybitsMaxScale; 417 }else if (dsdx < 1/copybitsMinScale ||dtdy < 1/copybitsMinScale ){ 418 tmp_w = src_crop_width/copybitsMinScale; 419 tmp_h = src_crop_height/copybitsMinScale; 420 tmp_w = (tmp_w/2)*2; 421 tmp_h = (tmp_h/2)*2; 422 } 423 ALOGE("%s:%d::tmp_w = %d,tmp_h = %d",__FUNCTION__,__LINE__,tmp_w,tmp_h); 424 425 int usage = GRALLOC_USAGE_PRIVATE_IOMMU_HEAP; 426 int format = fbHandle->format; 427 428 // We do not want copybit to generate alpha values from nothing 429 if (format == HAL_PIXEL_FORMAT_RGBA_8888 && 430 src.format != HAL_PIXEL_FORMAT_RGBA_8888) { 431 format = HAL_PIXEL_FORMAT_RGBX_8888; 432 } 433 if (0 == alloc_buffer(&tmpHnd, tmp_w, tmp_h, format, usage)){ 434 copybit_image_t tmp_dst; 435 copybit_rect_t tmp_rect; 436 tmp_dst.w = tmp_w; 437 tmp_dst.h = tmp_h; 438 tmp_dst.format = tmpHnd->format; 439 tmp_dst.handle = tmpHnd; 440 tmp_dst.horiz_padding = src.horiz_padding; 441 tmp_dst.vert_padding = src.vert_padding; 442 tmp_rect.l = 0; 443 tmp_rect.t = 0; 444 tmp_rect.r = tmp_dst.w; 445 tmp_rect.b = tmp_dst.h; 446 //create one clip region 447 hwc_rect tmp_hwc_rect = {0,0,tmp_rect.r,tmp_rect.b}; 448 hwc_region_t tmp_hwc_reg = {1,(hwc_rect_t const*)&tmp_hwc_rect}; 449 region_iterator tmp_it(tmp_hwc_reg); 450 copybit->set_parameter(copybit,COPYBIT_TRANSFORM,0); 451 //TODO: once, we are able to read layer alpha, update this 452 copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, 255); 453 copybit->set_sync(copybit, acquireFd); 454 err = copybit->stretch(copybit,&tmp_dst, &src, &tmp_rect, 455 &srcRect, &tmp_it); 456 if(err < 0){ 457 ALOGE("%s:%d::tmp copybit stretch failed",__FUNCTION__, 458 __LINE__); 459 if(tmpHnd) 460 free_buffer(tmpHnd); 461 return err; 462 } 463 // use release fence as aquire fd for next stretch 464 if (ctx->mMDP.version < qdutils::MDP_V4_0) { 465 copybit->flush_get_fence(copybit, &acquireFd); 466 close(acquireFd); 467 acquireFd = -1; 468 } 469 // copy new src and src rect crop 470 src = tmp_dst; 471 srcRect = tmp_rect; 472 } 473 } 474 // Copybit region 475 hwc_region_t region = layer->visibleRegionScreen; 476 region_iterator copybitRegion(region); 477 478 copybit->set_parameter(copybit, COPYBIT_FRAMEBUFFER_WIDTH, 479 renderBuffer->width); 480 copybit->set_parameter(copybit, COPYBIT_FRAMEBUFFER_HEIGHT, 481 renderBuffer->height); 482 copybit->set_parameter(copybit, COPYBIT_TRANSFORM, 483 layer->transform); 484 //TODO: once, we are able to read layer alpha, update this 485 copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, 255); 486 copybit->set_parameter(copybit, COPYBIT_BLEND_MODE, 487 layer->blending); 488 copybit->set_parameter(copybit, COPYBIT_DITHER, 489 (dst.format == HAL_PIXEL_FORMAT_RGB_565)? 490 COPYBIT_ENABLE : COPYBIT_DISABLE); 491 copybit->set_parameter(copybit, COPYBIT_BLIT_TO_FRAMEBUFFER, 492 COPYBIT_ENABLE); 493 copybit->set_sync(copybit, acquireFd); 494 err = copybit->stretch(copybit, &dst, &src, &dstRect, &srcRect, 495 ©bitRegion); 496 copybit->set_parameter(copybit, COPYBIT_BLIT_TO_FRAMEBUFFER, 497 COPYBIT_DISABLE); 498 499 if(tmpHnd) { 500 if (ctx->mMDP.version < qdutils::MDP_V4_0){ 501 int ret = -1, releaseFd; 502 // we need to wait for the buffer before freeing 503 copybit->flush_get_fence(copybit, &releaseFd); 504 ret = sync_wait(releaseFd, 1000); 505 if(ret < 0) { 506 ALOGE("%s: sync_wait error!! error no = %d err str = %s", 507 __FUNCTION__, errno, strerror(errno)); 508 } 509 close(releaseFd); 510 } 511 free_buffer(tmpHnd); 512 } 513 514 if(err < 0) 515 ALOGE("%s: copybit stretch failed",__FUNCTION__); 516 return err; 517} 518 519void CopyBit::getLayerResolution(const hwc_layer_1_t* layer, 520 unsigned int& width, unsigned int& height) 521{ 522 hwc_rect_t displayFrame = layer->displayFrame; 523 524 width = displayFrame.right - displayFrame.left; 525 height = displayFrame.bottom - displayFrame.top; 526} 527 528bool CopyBit::validateParams(hwc_context_t *ctx, 529 const hwc_display_contents_1_t *list) { 530 //Validate parameters 531 if (!ctx) { 532 ALOGE("%s:Invalid HWC context", __FUNCTION__); 533 return false; 534 } else if (!list) { 535 ALOGE("%s:Invalid HWC layer list", __FUNCTION__); 536 return false; 537 } 538 return true; 539} 540 541 542int CopyBit::allocRenderBuffers(int w, int h, int f) 543{ 544 int ret = 0; 545 for (int i = 0; i < NUM_RENDER_BUFFERS; i++) { 546 if (mRenderBuffer[i] == NULL) { 547 ret = alloc_buffer(&mRenderBuffer[i], 548 w, h, f, 549 GRALLOC_USAGE_PRIVATE_IOMMU_HEAP); 550 } 551 if(ret < 0) { 552 freeRenderBuffers(); 553 break; 554 } 555 } 556 return ret; 557} 558 559void CopyBit::freeRenderBuffers() 560{ 561 for (int i = 0; i < NUM_RENDER_BUFFERS; i++) { 562 if(mRenderBuffer[i]) { 563 free_buffer(mRenderBuffer[i]); 564 mRenderBuffer[i] = NULL; 565 } 566 } 567} 568 569private_handle_t * CopyBit::getCurrentRenderBuffer() { 570 return mRenderBuffer[mCurRenderBufferIndex]; 571} 572 573void CopyBit::setReleaseFd(int fd) { 574 if(mRelFd[0] >=0) 575 close(mRelFd[0]); 576 mRelFd[0] = mRelFd[1]; 577 mRelFd[1] = dup(fd); 578} 579 580struct copybit_device_t* CopyBit::getCopyBitDevice() { 581 return mEngine; 582} 583 584CopyBit::CopyBit():mIsModeOn(false), mCopyBitDraw(false), 585 mCurRenderBufferIndex(0){ 586 hw_module_t const *module; 587 for (int i = 0; i < NUM_RENDER_BUFFERS; i++) 588 mRenderBuffer[i] = NULL; 589 mRelFd[0] = -1; 590 mRelFd[1] = -1; 591 592 char value[PROPERTY_VALUE_MAX]; 593 property_get("debug.hwc.dynThreshold", value, "2"); 594 mDynThreshold = atof(value); 595 596 if (hw_get_module(COPYBIT_HARDWARE_MODULE_ID, &module) == 0) { 597 if(copybit_open(module, &mEngine) < 0) { 598 ALOGE("FATAL ERROR: copybit open failed."); 599 } 600 } else { 601 ALOGE("FATAL ERROR: copybit hw module not found"); 602 } 603} 604 605CopyBit::~CopyBit() 606{ 607 freeRenderBuffers(); 608 if(mRelFd[0] >=0) 609 close(mRelFd[0]); 610 if(mRelFd[1] >=0) 611 close(mRelFd[1]); 612 if(mEngine) 613 { 614 copybit_close(mEngine); 615 mEngine = NULL; 616 } 617} 618}; //namespace qhwc 619