1 /*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
18
19 #include <inttypes.h>
20 #include <math.h>
21 #include <stdint.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <sys/types.h>
26
27 #include <utils/Errors.h>
28 #include <utils/misc.h>
29 #include <utils/NativeHandle.h>
30 #include <utils/String8.h>
31 #include <utils/Thread.h>
32 #include <utils/Trace.h>
33 #include <utils/Vector.h>
34
35 #include <ui/GraphicBuffer.h>
36
37 #include <hardware/hardware.h>
38 #include <hardware/hwcomposer.h>
39
40 #include <android/configuration.h>
41
42 #include <cutils/log.h>
43 #include <cutils/properties.h>
44
45 #include "HWComposer.h"
46
47 #include "../Layer.h" // needed only for debugging
48 #include "../SurfaceFlinger.h"
49
50 namespace android {
51
52 #define MIN_HWC_HEADER_VERSION HWC_HEADER_VERSION
53
hwcApiVersion(const hwc_composer_device_1_t * hwc)54 static uint32_t hwcApiVersion(const hwc_composer_device_1_t* hwc) {
55 uint32_t hwcVersion = hwc->common.version;
56 return hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK;
57 }
58
hwcHeaderVersion(const hwc_composer_device_1_t * hwc)59 static uint32_t hwcHeaderVersion(const hwc_composer_device_1_t* hwc) {
60 uint32_t hwcVersion = hwc->common.version;
61 return hwcVersion & HARDWARE_API_VERSION_2_HEADER_MASK;
62 }
63
hwcHasApiVersion(const hwc_composer_device_1_t * hwc,uint32_t version)64 static bool hwcHasApiVersion(const hwc_composer_device_1_t* hwc,
65 uint32_t version) {
66 return hwcApiVersion(hwc) >= (version & HARDWARE_API_VERSION_2_MAJ_MIN_MASK);
67 }
68
69 // ---------------------------------------------------------------------------
70
71 struct HWComposer::cb_context {
72 struct callbacks : public hwc_procs_t {
73 // these are here to facilitate the transition when adding
74 // new callbacks (an implementation can check for NULL before
75 // calling a new callback).
76 void (*zero[4])(void);
77 };
78 callbacks procs;
79 HWComposer* hwc;
80 };
81
82 // ---------------------------------------------------------------------------
83
HWComposer(const sp<SurfaceFlinger> & flinger,EventHandler & handler)84 HWComposer::HWComposer(
85 const sp<SurfaceFlinger>& flinger,
86 EventHandler& handler)
87 : mFlinger(flinger),
88 mFbDev(0), mHwc(0), mNumDisplays(1),
89 mCBContext(new cb_context),
90 mEventHandler(handler),
91 mDebugForceFakeVSync(false)
92 {
93 for (size_t i =0 ; i<MAX_HWC_DISPLAYS ; i++) {
94 mLists[i] = 0;
95 }
96
97 for (size_t i=0 ; i<HWC_NUM_PHYSICAL_DISPLAY_TYPES ; i++) {
98 mLastHwVSync[i] = 0;
99 mVSyncCounts[i] = 0;
100 }
101
102 char value[PROPERTY_VALUE_MAX];
103 property_get("debug.sf.no_hw_vsync", value, "0");
104 mDebugForceFakeVSync = atoi(value);
105
106 bool needVSyncThread = true;
107
108 // Note: some devices may insist that the FB HAL be opened before HWC.
109 int fberr = loadFbHalModule();
110 loadHwcModule();
111
112 if (mFbDev && mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
113 // close FB HAL if we don't needed it.
114 // FIXME: this is temporary until we're not forced to open FB HAL
115 // before HWC.
116 framebuffer_close(mFbDev);
117 mFbDev = NULL;
118 }
119
120 // If we have no HWC, or a pre-1.1 HWC, an FB dev is mandatory.
121 if ((!mHwc || !hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1))
122 && !mFbDev) {
123 ALOGE("ERROR: failed to open framebuffer (%s), aborting",
124 strerror(-fberr));
125 abort();
126 }
127
128 // these display IDs are always reserved
129 for (size_t i=0 ; i<NUM_BUILTIN_DISPLAYS ; i++) {
130 mAllocatedDisplayIDs.markBit(i);
131 }
132
133 if (mHwc) {
134 ALOGI("Using %s version %u.%u", HWC_HARDWARE_COMPOSER,
135 (hwcApiVersion(mHwc) >> 24) & 0xff,
136 (hwcApiVersion(mHwc) >> 16) & 0xff);
137 if (mHwc->registerProcs) {
138 mCBContext->hwc = this;
139 mCBContext->procs.invalidate = &hook_invalidate;
140 mCBContext->procs.vsync = &hook_vsync;
141 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1))
142 mCBContext->procs.hotplug = &hook_hotplug;
143 else
144 mCBContext->procs.hotplug = NULL;
145 memset(mCBContext->procs.zero, 0, sizeof(mCBContext->procs.zero));
146 mHwc->registerProcs(mHwc, &mCBContext->procs);
147 }
148
149 // don't need a vsync thread if we have a hardware composer
150 needVSyncThread = false;
151 // always turn vsync off when we start
152 eventControl(HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0);
153
154 // the number of displays we actually have depends on the
155 // hw composer version
156 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) {
157 // 1.3 adds support for virtual displays
158 mNumDisplays = MAX_HWC_DISPLAYS;
159 } else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
160 // 1.1 adds support for multiple displays
161 mNumDisplays = NUM_BUILTIN_DISPLAYS;
162 } else {
163 mNumDisplays = 1;
164 }
165 }
166
167 if (mFbDev) {
168 ALOG_ASSERT(!(mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)),
169 "should only have fbdev if no hwc or hwc is 1.0");
170
171 DisplayData& disp(mDisplayData[HWC_DISPLAY_PRIMARY]);
172 disp.connected = true;
173 disp.format = mFbDev->format;
174 DisplayConfig config = DisplayConfig();
175 config.width = mFbDev->width;
176 config.height = mFbDev->height;
177 config.xdpi = mFbDev->xdpi;
178 config.ydpi = mFbDev->ydpi;
179 config.refresh = nsecs_t(1e9 / mFbDev->fps);
180 disp.configs.push_back(config);
181 disp.currentConfig = 0;
182 } else if (mHwc) {
183 // here we're guaranteed to have at least HWC 1.1
184 for (size_t i =0 ; i<NUM_BUILTIN_DISPLAYS ; i++) {
185 queryDisplayProperties(i);
186 }
187 }
188
189 if (needVSyncThread) {
190 // we don't have VSYNC support, we need to fake it
191 mVSyncThread = new VSyncThread(*this);
192 }
193 }
194
~HWComposer()195 HWComposer::~HWComposer() {
196 if (mHwc) {
197 eventControl(HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0);
198 }
199 if (mVSyncThread != NULL) {
200 mVSyncThread->requestExitAndWait();
201 }
202 if (mHwc) {
203 hwc_close_1(mHwc);
204 }
205 if (mFbDev) {
206 framebuffer_close(mFbDev);
207 }
208 delete mCBContext;
209 }
210
211 // Load and prepare the hardware composer module. Sets mHwc.
loadHwcModule()212 void HWComposer::loadHwcModule()
213 {
214 hw_module_t const* module;
215
216 if (hw_get_module(HWC_HARDWARE_MODULE_ID, &module) != 0) {
217 ALOGE("%s module not found", HWC_HARDWARE_MODULE_ID);
218 return;
219 }
220
221 int err = hwc_open_1(module, &mHwc);
222 if (err) {
223 ALOGE("%s device failed to initialize (%s)",
224 HWC_HARDWARE_COMPOSER, strerror(-err));
225 return;
226 }
227
228 if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_0) ||
229 hwcHeaderVersion(mHwc) < MIN_HWC_HEADER_VERSION ||
230 hwcHeaderVersion(mHwc) > HWC_HEADER_VERSION) {
231 ALOGE("%s device version %#x unsupported, will not be used",
232 HWC_HARDWARE_COMPOSER, mHwc->common.version);
233 hwc_close_1(mHwc);
234 mHwc = NULL;
235 return;
236 }
237 }
238
239 // Load and prepare the FB HAL, which uses the gralloc module. Sets mFbDev.
loadFbHalModule()240 int HWComposer::loadFbHalModule()
241 {
242 hw_module_t const* module;
243
244 int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module);
245 if (err != 0) {
246 ALOGE("%s module not found", GRALLOC_HARDWARE_MODULE_ID);
247 return err;
248 }
249
250 return framebuffer_open(module, &mFbDev);
251 }
252
initCheck() const253 status_t HWComposer::initCheck() const {
254 return mHwc ? NO_ERROR : NO_INIT;
255 }
256
hook_invalidate(const struct hwc_procs * procs)257 void HWComposer::hook_invalidate(const struct hwc_procs* procs) {
258 cb_context* ctx = reinterpret_cast<cb_context*>(
259 const_cast<hwc_procs_t*>(procs));
260 ctx->hwc->invalidate();
261 }
262
hook_vsync(const struct hwc_procs * procs,int disp,int64_t timestamp)263 void HWComposer::hook_vsync(const struct hwc_procs* procs, int disp,
264 int64_t timestamp) {
265 cb_context* ctx = reinterpret_cast<cb_context*>(
266 const_cast<hwc_procs_t*>(procs));
267 ctx->hwc->vsync(disp, timestamp);
268 }
269
hook_hotplug(const struct hwc_procs * procs,int disp,int connected)270 void HWComposer::hook_hotplug(const struct hwc_procs* procs, int disp,
271 int connected) {
272 cb_context* ctx = reinterpret_cast<cb_context*>(
273 const_cast<hwc_procs_t*>(procs));
274 ctx->hwc->hotplug(disp, connected);
275 }
276
invalidate()277 void HWComposer::invalidate() {
278 mFlinger->repaintEverything();
279 }
280
vsync(int disp,int64_t timestamp)281 void HWComposer::vsync(int disp, int64_t timestamp) {
282 if (uint32_t(disp) < HWC_NUM_PHYSICAL_DISPLAY_TYPES) {
283 {
284 Mutex::Autolock _l(mLock);
285
286 // There have been reports of HWCs that signal several vsync events
287 // with the same timestamp when turning the display off and on. This
288 // is a bug in the HWC implementation, but filter the extra events
289 // out here so they don't cause havoc downstream.
290 if (timestamp == mLastHwVSync[disp]) {
291 ALOGW("Ignoring duplicate VSYNC event from HWC (t=%" PRId64 ")",
292 timestamp);
293 return;
294 }
295
296 mLastHwVSync[disp] = timestamp;
297 }
298
299 char tag[16];
300 snprintf(tag, sizeof(tag), "HW_VSYNC_%1u", disp);
301 ATRACE_INT(tag, ++mVSyncCounts[disp] & 1);
302
303 mEventHandler.onVSyncReceived(disp, timestamp);
304 }
305 }
306
hotplug(int disp,int connected)307 void HWComposer::hotplug(int disp, int connected) {
308 if (disp >= VIRTUAL_DISPLAY_ID_BASE) {
309 ALOGE("hotplug event received for invalid display: disp=%d connected=%d",
310 disp, connected);
311 return;
312 }
313 queryDisplayProperties(disp);
314 // Do not teardown or recreate the primary display
315 if (disp != HWC_DISPLAY_PRIMARY) {
316 mEventHandler.onHotplugReceived(disp, bool(connected));
317 }
318 }
319
getDefaultDensity(uint32_t width,uint32_t height)320 static float getDefaultDensity(uint32_t width, uint32_t height) {
321 // Default density is based on TVs: 1080p displays get XHIGH density,
322 // lower-resolution displays get TV density. Maybe eventually we'll need
323 // to update it for 4K displays, though hopefully those just report
324 // accurate DPI information to begin with. This is also used for virtual
325 // displays and even primary displays with older hwcomposers, so be
326 // careful about orientation.
327
328 uint32_t h = width < height ? width : height;
329 if (h >= 1080) return ACONFIGURATION_DENSITY_XHIGH;
330 else return ACONFIGURATION_DENSITY_TV;
331 }
332
333 static const uint32_t DISPLAY_ATTRIBUTES[] = {
334 HWC_DISPLAY_VSYNC_PERIOD,
335 HWC_DISPLAY_WIDTH,
336 HWC_DISPLAY_HEIGHT,
337 HWC_DISPLAY_DPI_X,
338 HWC_DISPLAY_DPI_Y,
339 HWC_DISPLAY_COLOR_TRANSFORM,
340 HWC_DISPLAY_NO_ATTRIBUTE,
341 };
342 #define NUM_DISPLAY_ATTRIBUTES (sizeof(DISPLAY_ATTRIBUTES) / sizeof(DISPLAY_ATTRIBUTES)[0])
343
344 static const uint32_t PRE_HWC15_DISPLAY_ATTRIBUTES[] = {
345 HWC_DISPLAY_VSYNC_PERIOD,
346 HWC_DISPLAY_WIDTH,
347 HWC_DISPLAY_HEIGHT,
348 HWC_DISPLAY_DPI_X,
349 HWC_DISPLAY_DPI_Y,
350 HWC_DISPLAY_NO_ATTRIBUTE,
351 };
352
queryDisplayProperties(int disp)353 status_t HWComposer::queryDisplayProperties(int disp) {
354
355 LOG_ALWAYS_FATAL_IF(!mHwc || !hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1));
356
357 // use zero as default value for unspecified attributes
358 int32_t values[NUM_DISPLAY_ATTRIBUTES - 1];
359 memset(values, 0, sizeof(values));
360
361 const size_t MAX_NUM_CONFIGS = 128;
362 uint32_t configs[MAX_NUM_CONFIGS] = {0};
363 size_t numConfigs = MAX_NUM_CONFIGS;
364 status_t err = mHwc->getDisplayConfigs(mHwc, disp, configs, &numConfigs);
365 if (err != NO_ERROR) {
366 // this can happen if an unpluggable display is not connected
367 mDisplayData[disp].connected = false;
368 return err;
369 }
370
371 mDisplayData[disp].currentConfig = 0;
372 for (size_t c = 0; c < numConfigs; ++c) {
373 err = mHwc->getDisplayAttributes(mHwc, disp, configs[c],
374 DISPLAY_ATTRIBUTES, values);
375 // If this is a pre-1.5 HWC, it may not know about color transform, so
376 // try again with a smaller set of attributes
377 if (err != NO_ERROR) {
378 err = mHwc->getDisplayAttributes(mHwc, disp, configs[c],
379 PRE_HWC15_DISPLAY_ATTRIBUTES, values);
380 }
381 if (err != NO_ERROR) {
382 // we can't get this display's info. turn it off.
383 mDisplayData[disp].connected = false;
384 return err;
385 }
386
387 DisplayConfig config = DisplayConfig();
388 for (size_t i = 0; i < NUM_DISPLAY_ATTRIBUTES - 1; i++) {
389 switch (DISPLAY_ATTRIBUTES[i]) {
390 case HWC_DISPLAY_VSYNC_PERIOD:
391 config.refresh = nsecs_t(values[i]);
392 break;
393 case HWC_DISPLAY_WIDTH:
394 config.width = values[i];
395 break;
396 case HWC_DISPLAY_HEIGHT:
397 config.height = values[i];
398 break;
399 case HWC_DISPLAY_DPI_X:
400 config.xdpi = values[i] / 1000.0f;
401 break;
402 case HWC_DISPLAY_DPI_Y:
403 config.ydpi = values[i] / 1000.0f;
404 break;
405 case HWC_DISPLAY_COLOR_TRANSFORM:
406 config.colorTransform = values[i];
407 break;
408 default:
409 ALOG_ASSERT(false, "unknown display attribute[%zu] %#x",
410 i, DISPLAY_ATTRIBUTES[i]);
411 break;
412 }
413 }
414
415 if (config.xdpi == 0.0f || config.ydpi == 0.0f) {
416 float dpi = getDefaultDensity(config.width, config.height);
417 config.xdpi = dpi;
418 config.ydpi = dpi;
419 }
420
421 mDisplayData[disp].configs.push_back(config);
422 }
423
424 // FIXME: what should we set the format to?
425 mDisplayData[disp].format = HAL_PIXEL_FORMAT_RGBA_8888;
426 mDisplayData[disp].connected = true;
427 return NO_ERROR;
428 }
429
setVirtualDisplayProperties(int32_t id,uint32_t w,uint32_t h,uint32_t format)430 status_t HWComposer::setVirtualDisplayProperties(int32_t id,
431 uint32_t w, uint32_t h, uint32_t format) {
432 if (id < VIRTUAL_DISPLAY_ID_BASE || id >= int32_t(mNumDisplays) ||
433 !mAllocatedDisplayIDs.hasBit(id)) {
434 return BAD_INDEX;
435 }
436 size_t configId = mDisplayData[id].currentConfig;
437 mDisplayData[id].format = format;
438 DisplayConfig& config = mDisplayData[id].configs.editItemAt(configId);
439 config.width = w;
440 config.height = h;
441 config.xdpi = config.ydpi = getDefaultDensity(w, h);
442 return NO_ERROR;
443 }
444
allocateDisplayId()445 int32_t HWComposer::allocateDisplayId() {
446 if (mAllocatedDisplayIDs.count() >= mNumDisplays) {
447 return NO_MEMORY;
448 }
449 int32_t id = mAllocatedDisplayIDs.firstUnmarkedBit();
450 mAllocatedDisplayIDs.markBit(id);
451 mDisplayData[id].connected = true;
452 mDisplayData[id].configs.resize(1);
453 mDisplayData[id].currentConfig = 0;
454 return id;
455 }
456
freeDisplayId(int32_t id)457 status_t HWComposer::freeDisplayId(int32_t id) {
458 if (id < NUM_BUILTIN_DISPLAYS) {
459 // cannot free the reserved IDs
460 return BAD_VALUE;
461 }
462 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
463 return BAD_INDEX;
464 }
465 mAllocatedDisplayIDs.clearBit(id);
466 mDisplayData[id].connected = false;
467 return NO_ERROR;
468 }
469
getRefreshTimestamp(int disp) const470 nsecs_t HWComposer::getRefreshTimestamp(int disp) const {
471 // this returns the last refresh timestamp.
472 // if the last one is not available, we estimate it based on
473 // the refresh period and whatever closest timestamp we have.
474 Mutex::Autolock _l(mLock);
475 nsecs_t now = systemTime(CLOCK_MONOTONIC);
476 size_t configId = mDisplayData[disp].currentConfig;
477 return now - ((now - mLastHwVSync[disp]) %
478 mDisplayData[disp].configs[configId].refresh);
479 }
480
getDisplayFence(int disp) const481 sp<Fence> HWComposer::getDisplayFence(int disp) const {
482 return mDisplayData[disp].lastDisplayFence;
483 }
484
getFormat(int disp) const485 uint32_t HWComposer::getFormat(int disp) const {
486 if (static_cast<uint32_t>(disp) >= MAX_HWC_DISPLAYS || !mAllocatedDisplayIDs.hasBit(disp)) {
487 return HAL_PIXEL_FORMAT_RGBA_8888;
488 } else {
489 return mDisplayData[disp].format;
490 }
491 }
492
isConnected(int disp) const493 bool HWComposer::isConnected(int disp) const {
494 return mDisplayData[disp].connected;
495 }
496
getWidth(int disp) const497 uint32_t HWComposer::getWidth(int disp) const {
498 size_t currentConfig = mDisplayData[disp].currentConfig;
499 return mDisplayData[disp].configs[currentConfig].width;
500 }
501
getHeight(int disp) const502 uint32_t HWComposer::getHeight(int disp) const {
503 size_t currentConfig = mDisplayData[disp].currentConfig;
504 return mDisplayData[disp].configs[currentConfig].height;
505 }
506
getDpiX(int disp) const507 float HWComposer::getDpiX(int disp) const {
508 size_t currentConfig = mDisplayData[disp].currentConfig;
509 return mDisplayData[disp].configs[currentConfig].xdpi;
510 }
511
getDpiY(int disp) const512 float HWComposer::getDpiY(int disp) const {
513 size_t currentConfig = mDisplayData[disp].currentConfig;
514 return mDisplayData[disp].configs[currentConfig].ydpi;
515 }
516
getRefreshPeriod(int disp) const517 nsecs_t HWComposer::getRefreshPeriod(int disp) const {
518 size_t currentConfig = mDisplayData[disp].currentConfig;
519 return mDisplayData[disp].configs[currentConfig].refresh;
520 }
521
getConfigs(int disp) const522 const Vector<HWComposer::DisplayConfig>& HWComposer::getConfigs(int disp) const {
523 return mDisplayData[disp].configs;
524 }
525
getCurrentConfig(int disp) const526 size_t HWComposer::getCurrentConfig(int disp) const {
527 return mDisplayData[disp].currentConfig;
528 }
529
eventControl(int disp,int event,int enabled)530 void HWComposer::eventControl(int disp, int event, int enabled) {
531 if (uint32_t(disp)>31 || !mAllocatedDisplayIDs.hasBit(disp)) {
532 ALOGD("eventControl ignoring event %d on unallocated disp %d (en=%d)",
533 event, disp, enabled);
534 return;
535 }
536 if (event != EVENT_VSYNC) {
537 ALOGW("eventControl got unexpected event %d (disp=%d en=%d)",
538 event, disp, enabled);
539 return;
540 }
541 status_t err = NO_ERROR;
542 if (mHwc && !mDebugForceFakeVSync) {
543 // NOTE: we use our own internal lock here because we have to call
544 // into the HWC with the lock held, and we want to make sure
545 // that even if HWC blocks (which it shouldn't), it won't
546 // affect other threads.
547 Mutex::Autolock _l(mEventControlLock);
548 const int32_t eventBit = 1UL << event;
549 const int32_t newValue = enabled ? eventBit : 0;
550 const int32_t oldValue = mDisplayData[disp].events & eventBit;
551 if (newValue != oldValue) {
552 ATRACE_CALL();
553 err = mHwc->eventControl(mHwc, disp, event, enabled);
554 if (!err) {
555 int32_t& events(mDisplayData[disp].events);
556 events = (events & ~eventBit) | newValue;
557
558 char tag[16];
559 snprintf(tag, sizeof(tag), "HW_VSYNC_ON_%1u", disp);
560 ATRACE_INT(tag, enabled);
561 }
562 }
563 // error here should not happen -- not sure what we should
564 // do if it does.
565 ALOGE_IF(err, "eventControl(%d, %d) failed %s",
566 event, enabled, strerror(-err));
567 }
568
569 if (err == NO_ERROR && mVSyncThread != NULL) {
570 mVSyncThread->setEnabled(enabled);
571 }
572 }
573
createWorkList(int32_t id,size_t numLayers)574 status_t HWComposer::createWorkList(int32_t id, size_t numLayers) {
575 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
576 return BAD_INDEX;
577 }
578
579 if (mHwc) {
580 DisplayData& disp(mDisplayData[id]);
581 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
582 // we need space for the HWC_FRAMEBUFFER_TARGET
583 numLayers++;
584 }
585 if (disp.capacity < numLayers || disp.list == NULL) {
586 size_t size = sizeof(hwc_display_contents_1_t)
587 + numLayers * sizeof(hwc_layer_1_t);
588 free(disp.list);
589 disp.list = (hwc_display_contents_1_t*)malloc(size);
590 disp.capacity = numLayers;
591 }
592 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
593 disp.framebufferTarget = &disp.list->hwLayers[numLayers - 1];
594 memset(disp.framebufferTarget, 0, sizeof(hwc_layer_1_t));
595 const DisplayConfig& currentConfig =
596 disp.configs[disp.currentConfig];
597 const hwc_rect_t r = { 0, 0,
598 (int) currentConfig.width, (int) currentConfig.height };
599 disp.framebufferTarget->compositionType = HWC_FRAMEBUFFER_TARGET;
600 disp.framebufferTarget->hints = 0;
601 disp.framebufferTarget->flags = 0;
602 disp.framebufferTarget->handle = disp.fbTargetHandle;
603 disp.framebufferTarget->transform = 0;
604 disp.framebufferTarget->blending = HWC_BLENDING_PREMULT;
605 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) {
606 disp.framebufferTarget->sourceCropf.left = 0;
607 disp.framebufferTarget->sourceCropf.top = 0;
608 disp.framebufferTarget->sourceCropf.right =
609 currentConfig.width;
610 disp.framebufferTarget->sourceCropf.bottom =
611 currentConfig.height;
612 } else {
613 disp.framebufferTarget->sourceCrop = r;
614 }
615 disp.framebufferTarget->displayFrame = r;
616 disp.framebufferTarget->visibleRegionScreen.numRects = 1;
617 disp.framebufferTarget->visibleRegionScreen.rects =
618 &disp.framebufferTarget->displayFrame;
619 disp.framebufferTarget->acquireFenceFd = -1;
620 disp.framebufferTarget->releaseFenceFd = -1;
621 disp.framebufferTarget->planeAlpha = 0xFF;
622 }
623 disp.list->retireFenceFd = -1;
624 disp.list->flags = HWC_GEOMETRY_CHANGED;
625 disp.list->numHwLayers = numLayers;
626 }
627 return NO_ERROR;
628 }
629
setFramebufferTarget(int32_t id,const sp<Fence> & acquireFence,const sp<GraphicBuffer> & buf)630 status_t HWComposer::setFramebufferTarget(int32_t id,
631 const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buf) {
632 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
633 return BAD_INDEX;
634 }
635 DisplayData& disp(mDisplayData[id]);
636 if (!disp.framebufferTarget) {
637 // this should never happen, but apparently eglCreateWindowSurface()
638 // triggers a Surface::queueBuffer() on some
639 // devices (!?) -- log and ignore.
640 ALOGE("HWComposer: framebufferTarget is null");
641 return NO_ERROR;
642 }
643
644 int acquireFenceFd = -1;
645 if (acquireFence->isValid()) {
646 acquireFenceFd = acquireFence->dup();
647 }
648
649 // ALOGD("fbPost: handle=%p, fence=%d", buf->handle, acquireFenceFd);
650 disp.fbTargetHandle = buf->handle;
651 disp.framebufferTarget->handle = disp.fbTargetHandle;
652 disp.framebufferTarget->acquireFenceFd = acquireFenceFd;
653 return NO_ERROR;
654 }
655
prepare()656 status_t HWComposer::prepare() {
657 Mutex::Autolock _l(mDisplayLock);
658 for (size_t i=0 ; i<mNumDisplays ; i++) {
659 DisplayData& disp(mDisplayData[i]);
660 if (disp.framebufferTarget) {
661 // make sure to reset the type to HWC_FRAMEBUFFER_TARGET
662 // DO NOT reset the handle field to NULL, because it's possible
663 // that we have nothing to redraw (eg: eglSwapBuffers() not called)
664 // in which case, we should continue to use the same buffer.
665 LOG_FATAL_IF(disp.list == NULL);
666 disp.framebufferTarget->compositionType = HWC_FRAMEBUFFER_TARGET;
667 }
668 if (!disp.connected && disp.list != NULL) {
669 ALOGW("WARNING: disp %zu: connected, non-null list, layers=%zu",
670 i, disp.list->numHwLayers);
671 }
672 mLists[i] = disp.list;
673 if (mLists[i]) {
674 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) {
675 mLists[i]->outbuf = disp.outbufHandle;
676 mLists[i]->outbufAcquireFenceFd = -1;
677 } else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
678 // garbage data to catch improper use
679 mLists[i]->dpy = (hwc_display_t)0xDEADBEEF;
680 mLists[i]->sur = (hwc_surface_t)0xDEADBEEF;
681 } else {
682 mLists[i]->dpy = EGL_NO_DISPLAY;
683 mLists[i]->sur = EGL_NO_SURFACE;
684 }
685 }
686 }
687
688 int err = mHwc->prepare(mHwc, mNumDisplays, mLists);
689 ALOGE_IF(err, "HWComposer: prepare failed (%s)", strerror(-err));
690
691 if (err == NO_ERROR) {
692 // here we're just making sure that "skip" layers are set
693 // to HWC_FRAMEBUFFER and we're also counting how many layers
694 // we have of each type.
695 //
696 // If there are no window layers, we treat the display has having FB
697 // composition, because SurfaceFlinger will use GLES to draw the
698 // wormhole region.
699 for (size_t i=0 ; i<mNumDisplays ; i++) {
700 DisplayData& disp(mDisplayData[i]);
701 disp.hasFbComp = false;
702 disp.hasOvComp = false;
703 if (disp.list) {
704 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) {
705 hwc_layer_1_t& l = disp.list->hwLayers[i];
706
707 //ALOGD("prepare: %d, type=%d, handle=%p",
708 // i, l.compositionType, l.handle);
709
710 if (l.flags & HWC_SKIP_LAYER) {
711 l.compositionType = HWC_FRAMEBUFFER;
712 }
713 if (l.compositionType == HWC_FRAMEBUFFER) {
714 disp.hasFbComp = true;
715 }
716 if (l.compositionType == HWC_OVERLAY) {
717 disp.hasOvComp = true;
718 }
719 if (l.compositionType == HWC_CURSOR_OVERLAY) {
720 disp.hasOvComp = true;
721 }
722 }
723 if (disp.list->numHwLayers == (disp.framebufferTarget ? 1 : 0)) {
724 disp.hasFbComp = true;
725 }
726 } else {
727 disp.hasFbComp = true;
728 }
729 }
730 }
731 return (status_t)err;
732 }
733
hasHwcComposition(int32_t id) const734 bool HWComposer::hasHwcComposition(int32_t id) const {
735 if (!mHwc || uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id))
736 return false;
737 return mDisplayData[id].hasOvComp;
738 }
739
hasGlesComposition(int32_t id) const740 bool HWComposer::hasGlesComposition(int32_t id) const {
741 if (!mHwc || uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id))
742 return true;
743 return mDisplayData[id].hasFbComp;
744 }
745
getAndResetReleaseFence(int32_t id)746 sp<Fence> HWComposer::getAndResetReleaseFence(int32_t id) {
747 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id))
748 return Fence::NO_FENCE;
749
750 int fd = INVALID_OPERATION;
751 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
752 const DisplayData& disp(mDisplayData[id]);
753 if (disp.framebufferTarget) {
754 fd = disp.framebufferTarget->releaseFenceFd;
755 disp.framebufferTarget->acquireFenceFd = -1;
756 disp.framebufferTarget->releaseFenceFd = -1;
757 }
758 }
759 return fd >= 0 ? new Fence(fd) : Fence::NO_FENCE;
760 }
761
commit()762 status_t HWComposer::commit() {
763 int err = NO_ERROR;
764 if (mHwc) {
765 if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
766 // On version 1.0, the OpenGL ES target surface is communicated
767 // by the (dpy, sur) fields and we are guaranteed to have only
768 // a single display.
769 mLists[0]->dpy = eglGetCurrentDisplay();
770 mLists[0]->sur = eglGetCurrentSurface(EGL_DRAW);
771 }
772
773 for (size_t i=VIRTUAL_DISPLAY_ID_BASE; i<mNumDisplays; i++) {
774 DisplayData& disp(mDisplayData[i]);
775 if (disp.outbufHandle) {
776 mLists[i]->outbuf = disp.outbufHandle;
777 mLists[i]->outbufAcquireFenceFd =
778 disp.outbufAcquireFence->dup();
779 }
780 }
781
782 err = mHwc->set(mHwc, mNumDisplays, mLists);
783
784 for (size_t i=0 ; i<mNumDisplays ; i++) {
785 DisplayData& disp(mDisplayData[i]);
786 disp.lastDisplayFence = disp.lastRetireFence;
787 disp.lastRetireFence = Fence::NO_FENCE;
788 if (disp.list) {
789 if (disp.list->retireFenceFd != -1) {
790 disp.lastRetireFence = new Fence(disp.list->retireFenceFd);
791 disp.list->retireFenceFd = -1;
792 }
793 disp.list->flags &= ~HWC_GEOMETRY_CHANGED;
794 }
795 }
796 }
797 return (status_t)err;
798 }
799
setPowerMode(int disp,int mode)800 status_t HWComposer::setPowerMode(int disp, int mode) {
801 LOG_FATAL_IF(disp >= VIRTUAL_DISPLAY_ID_BASE);
802 if (mHwc) {
803 if (mode == HWC_POWER_MODE_OFF) {
804 eventControl(disp, HWC_EVENT_VSYNC, 0);
805 }
806 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_4)) {
807 return (status_t)mHwc->setPowerMode(mHwc, disp, mode);
808 } else {
809 return (status_t)mHwc->blank(mHwc, disp,
810 mode == HWC_POWER_MODE_OFF ? 1 : 0);
811 }
812 }
813 return NO_ERROR;
814 }
815
setActiveConfig(int disp,int mode)816 status_t HWComposer::setActiveConfig(int disp, int mode) {
817 LOG_FATAL_IF(disp >= VIRTUAL_DISPLAY_ID_BASE);
818 DisplayData& dd(mDisplayData[disp]);
819 dd.currentConfig = mode;
820 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_4)) {
821 return (status_t)mHwc->setActiveConfig(mHwc, disp, mode);
822 } else {
823 LOG_FATAL_IF(mode != 0);
824 }
825 return NO_ERROR;
826 }
827
disconnectDisplay(int disp)828 void HWComposer::disconnectDisplay(int disp) {
829 LOG_ALWAYS_FATAL_IF(disp < 0 || disp == HWC_DISPLAY_PRIMARY);
830 DisplayData& dd(mDisplayData[disp]);
831 free(dd.list);
832 dd.list = NULL;
833 dd.framebufferTarget = NULL; // points into dd.list
834 dd.fbTargetHandle = NULL;
835 dd.outbufHandle = NULL;
836 dd.lastRetireFence = Fence::NO_FENCE;
837 dd.lastDisplayFence = Fence::NO_FENCE;
838 dd.outbufAcquireFence = Fence::NO_FENCE;
839 // clear all the previous configs and repopulate when a new
840 // device is added
841 dd.configs.clear();
842 }
843
getVisualID() const844 int HWComposer::getVisualID() const {
845 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
846 // FIXME: temporary hack until HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED
847 // is supported by the implementation. we can only be in this case
848 // if we have HWC 1.1
849 return HAL_PIXEL_FORMAT_RGBA_8888;
850 //return HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED;
851 } else {
852 return mFbDev->format;
853 }
854 }
855
supportsFramebufferTarget() const856 bool HWComposer::supportsFramebufferTarget() const {
857 return (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1));
858 }
859
fbPost(int32_t id,const sp<Fence> & acquireFence,const sp<GraphicBuffer> & buffer)860 int HWComposer::fbPost(int32_t id,
861 const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buffer) {
862 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
863 return setFramebufferTarget(id, acquireFence, buffer);
864 } else {
865 acquireFence->waitForever("HWComposer::fbPost");
866 return mFbDev->post(mFbDev, buffer->handle);
867 }
868 }
869
fbCompositionComplete()870 int HWComposer::fbCompositionComplete() {
871 if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1))
872 return NO_ERROR;
873
874 if (mFbDev->compositionComplete) {
875 return mFbDev->compositionComplete(mFbDev);
876 } else {
877 return INVALID_OPERATION;
878 }
879 }
880
fbDump(String8 & result)881 void HWComposer::fbDump(String8& result) {
882 if (mFbDev && mFbDev->common.version >= 1 && mFbDev->dump) {
883 const size_t SIZE = 4096;
884 char buffer[SIZE];
885 mFbDev->dump(mFbDev, buffer, SIZE);
886 result.append(buffer);
887 }
888 }
889
setOutputBuffer(int32_t id,const sp<Fence> & acquireFence,const sp<GraphicBuffer> & buf)890 status_t HWComposer::setOutputBuffer(int32_t id, const sp<Fence>& acquireFence,
891 const sp<GraphicBuffer>& buf) {
892 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id))
893 return BAD_INDEX;
894 if (id < VIRTUAL_DISPLAY_ID_BASE)
895 return INVALID_OPERATION;
896
897 DisplayData& disp(mDisplayData[id]);
898 disp.outbufHandle = buf->handle;
899 disp.outbufAcquireFence = acquireFence;
900 return NO_ERROR;
901 }
902
getLastRetireFence(int32_t id) const903 sp<Fence> HWComposer::getLastRetireFence(int32_t id) const {
904 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id))
905 return Fence::NO_FENCE;
906 return mDisplayData[id].lastRetireFence;
907 }
908
setCursorPositionAsync(int32_t id,const Rect & pos)909 status_t HWComposer::setCursorPositionAsync(int32_t id, const Rect& pos)
910 {
911 if (mHwc->setCursorPositionAsync) {
912 return (status_t)mHwc->setCursorPositionAsync(mHwc, id, pos.left, pos.top);
913 }
914 else {
915 return NO_ERROR;
916 }
917 }
918
919 /*
920 * Helper template to implement a concrete HWCLayer
921 * This holds the pointer to the concrete hwc layer type
922 * and implements the "iterable" side of HWCLayer.
923 */
924 template<typename CONCRETE, typename HWCTYPE>
925 class Iterable : public HWComposer::HWCLayer {
926 protected:
927 HWCTYPE* const mLayerList;
928 HWCTYPE* mCurrentLayer;
Iterable(HWCTYPE * layer)929 Iterable(HWCTYPE* layer) : mLayerList(layer), mCurrentLayer(layer),
930 mIndex(0) { }
getLayer() const931 inline HWCTYPE const * getLayer() const { return mCurrentLayer; }
getLayer()932 inline HWCTYPE* getLayer() { return mCurrentLayer; }
~Iterable()933 virtual ~Iterable() { }
934 size_t mIndex;
935 private:
936 // returns a copy of ourselves
dup()937 virtual HWComposer::HWCLayer* dup() {
938 return new CONCRETE( static_cast<const CONCRETE&>(*this) );
939 }
setLayer(size_t index)940 virtual status_t setLayer(size_t index) {
941 mIndex = index;
942 mCurrentLayer = &mLayerList[index];
943 return NO_ERROR;
944 }
945 };
946
947 /*
948 * Concrete implementation of HWCLayer for HWC_DEVICE_API_VERSION_1_0.
949 * This implements the HWCLayer side of HWCIterableLayer.
950 */
951 class HWCLayerVersion1 : public Iterable<HWCLayerVersion1, hwc_layer_1_t> {
952 struct hwc_composer_device_1* mHwc;
953 public:
HWCLayerVersion1(struct hwc_composer_device_1 * hwc,hwc_layer_1_t * layer,Vector<Region> * visibleRegions,Vector<Region> * surfaceDamageRegions)954 HWCLayerVersion1(struct hwc_composer_device_1* hwc, hwc_layer_1_t* layer,
955 Vector<Region>* visibleRegions,
956 Vector<Region>* surfaceDamageRegions)
957 : Iterable<HWCLayerVersion1, hwc_layer_1_t>(layer), mHwc(hwc),
958 mVisibleRegions(visibleRegions),
959 mSurfaceDamageRegions(surfaceDamageRegions) {}
960
getCompositionType() const961 virtual int32_t getCompositionType() const {
962 return getLayer()->compositionType;
963 }
getHints() const964 virtual uint32_t getHints() const {
965 return getLayer()->hints;
966 }
getAndResetReleaseFence()967 virtual sp<Fence> getAndResetReleaseFence() {
968 int fd = getLayer()->releaseFenceFd;
969 getLayer()->releaseFenceFd = -1;
970 return fd >= 0 ? new Fence(fd) : Fence::NO_FENCE;
971 }
setAcquireFenceFd(int fenceFd)972 virtual void setAcquireFenceFd(int fenceFd) {
973 getLayer()->acquireFenceFd = fenceFd;
974 }
setPerFrameDefaultState()975 virtual void setPerFrameDefaultState() {
976 //getLayer()->compositionType = HWC_FRAMEBUFFER;
977 }
setPlaneAlpha(uint8_t alpha)978 virtual void setPlaneAlpha(uint8_t alpha) {
979 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_2)) {
980 getLayer()->planeAlpha = alpha;
981 } else {
982 if (alpha < 0xFF) {
983 getLayer()->flags |= HWC_SKIP_LAYER;
984 }
985 }
986 }
setDefaultState()987 virtual void setDefaultState() {
988 hwc_layer_1_t* const l = getLayer();
989 l->compositionType = HWC_FRAMEBUFFER;
990 l->hints = 0;
991 l->flags = HWC_SKIP_LAYER;
992 l->handle = 0;
993 l->transform = 0;
994 l->blending = HWC_BLENDING_NONE;
995 l->visibleRegionScreen.numRects = 0;
996 l->visibleRegionScreen.rects = NULL;
997 l->acquireFenceFd = -1;
998 l->releaseFenceFd = -1;
999 l->planeAlpha = 0xFF;
1000 }
setSkip(bool skip)1001 virtual void setSkip(bool skip) {
1002 if (skip) {
1003 getLayer()->flags |= HWC_SKIP_LAYER;
1004 } else {
1005 getLayer()->flags &= ~HWC_SKIP_LAYER;
1006 }
1007 }
setIsCursorLayerHint(bool isCursor)1008 virtual void setIsCursorLayerHint(bool isCursor) {
1009 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_4)) {
1010 if (isCursor) {
1011 getLayer()->flags |= HWC_IS_CURSOR_LAYER;
1012 }
1013 else {
1014 getLayer()->flags &= ~HWC_IS_CURSOR_LAYER;
1015 }
1016 }
1017 }
setBlending(uint32_t blending)1018 virtual void setBlending(uint32_t blending) {
1019 getLayer()->blending = blending;
1020 }
setTransform(uint32_t transform)1021 virtual void setTransform(uint32_t transform) {
1022 getLayer()->transform = transform;
1023 }
setFrame(const Rect & frame)1024 virtual void setFrame(const Rect& frame) {
1025 getLayer()->displayFrame = reinterpret_cast<hwc_rect_t const&>(frame);
1026 }
setCrop(const FloatRect & crop)1027 virtual void setCrop(const FloatRect& crop) {
1028 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) {
1029 getLayer()->sourceCropf = reinterpret_cast<hwc_frect_t const&>(crop);
1030 } else {
1031 /*
1032 * Since h/w composer didn't support a flot crop rect before version 1.3,
1033 * using integer coordinates instead produces a different output from the GL code in
1034 * Layer::drawWithOpenGL(). The difference can be large if the buffer crop to
1035 * window size ratio is large and a window crop is defined
1036 * (i.e.: if we scale the buffer a lot and we also crop it with a window crop).
1037 */
1038 hwc_rect_t& r = getLayer()->sourceCrop;
1039 r.left = int(ceilf(crop.left));
1040 r.top = int(ceilf(crop.top));
1041 r.right = int(floorf(crop.right));
1042 r.bottom= int(floorf(crop.bottom));
1043 }
1044 }
setVisibleRegionScreen(const Region & reg)1045 virtual void setVisibleRegionScreen(const Region& reg) {
1046 hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen;
1047 mVisibleRegions->editItemAt(mIndex) = reg;
1048 visibleRegion.rects = reinterpret_cast<hwc_rect_t const *>(
1049 mVisibleRegions->itemAt(mIndex).getArray(
1050 &visibleRegion.numRects));
1051 }
setSurfaceDamage(const Region & reg)1052 virtual void setSurfaceDamage(const Region& reg) {
1053 if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_5)) {
1054 return;
1055 }
1056 hwc_region_t& surfaceDamage = getLayer()->surfaceDamage;
1057 // We encode default full-screen damage as INVALID_RECT upstream, but as
1058 // 0 rects for HWComposer
1059 if (reg.isRect() && reg.getBounds() == Rect::INVALID_RECT) {
1060 surfaceDamage.numRects = 0;
1061 surfaceDamage.rects = NULL;
1062 return;
1063 }
1064 mSurfaceDamageRegions->editItemAt(mIndex) = reg;
1065 surfaceDamage.rects = reinterpret_cast<hwc_rect_t const *>(
1066 mSurfaceDamageRegions->itemAt(mIndex).getArray(
1067 &surfaceDamage.numRects));
1068 }
setSidebandStream(const sp<NativeHandle> & stream)1069 virtual void setSidebandStream(const sp<NativeHandle>& stream) {
1070 ALOG_ASSERT(stream->handle() != NULL);
1071 getLayer()->compositionType = HWC_SIDEBAND;
1072 getLayer()->sidebandStream = stream->handle();
1073 }
setBuffer(const sp<GraphicBuffer> & buffer)1074 virtual void setBuffer(const sp<GraphicBuffer>& buffer) {
1075 if (buffer == 0 || buffer->handle == 0) {
1076 getLayer()->compositionType = HWC_FRAMEBUFFER;
1077 getLayer()->flags |= HWC_SKIP_LAYER;
1078 getLayer()->handle = 0;
1079 } else {
1080 if (getLayer()->compositionType == HWC_SIDEBAND) {
1081 // If this was a sideband layer but the stream was removed, reset
1082 // it to FRAMEBUFFER. The HWC can change it to OVERLAY in prepare.
1083 getLayer()->compositionType = HWC_FRAMEBUFFER;
1084 }
1085 getLayer()->handle = buffer->handle;
1086 }
1087 }
onDisplayed()1088 virtual void onDisplayed() {
1089 getLayer()->acquireFenceFd = -1;
1090 }
1091
1092 protected:
1093 // Pointers to the vectors of Region backing-memory held in DisplayData.
1094 // Only the Region at mIndex corresponds to this Layer.
1095 Vector<Region>* mVisibleRegions;
1096 Vector<Region>* mSurfaceDamageRegions;
1097 };
1098
1099 /*
1100 * returns an iterator initialized at a given index in the layer list
1101 */
getLayerIterator(int32_t id,size_t index)1102 HWComposer::LayerListIterator HWComposer::getLayerIterator(int32_t id, size_t index) {
1103 if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
1104 return LayerListIterator();
1105 }
1106 DisplayData& disp(mDisplayData[id]);
1107 if (!mHwc || !disp.list || index > disp.list->numHwLayers) {
1108 return LayerListIterator();
1109 }
1110 if (disp.visibleRegions.size() < disp.list->numHwLayers) {
1111 disp.visibleRegions.resize(disp.list->numHwLayers);
1112 }
1113 if (disp.surfaceDamageRegions.size() < disp.list->numHwLayers) {
1114 disp.surfaceDamageRegions.resize(disp.list->numHwLayers);
1115 }
1116 return LayerListIterator(new HWCLayerVersion1(mHwc, disp.list->hwLayers,
1117 &disp.visibleRegions, &disp.surfaceDamageRegions), index);
1118 }
1119
1120 /*
1121 * returns an iterator on the beginning of the layer list
1122 */
begin(int32_t id)1123 HWComposer::LayerListIterator HWComposer::begin(int32_t id) {
1124 return getLayerIterator(id, 0);
1125 }
1126
1127 /*
1128 * returns an iterator on the end of the layer list
1129 */
end(int32_t id)1130 HWComposer::LayerListIterator HWComposer::end(int32_t id) {
1131 size_t numLayers = 0;
1132 if (uint32_t(id) <= 31 && mAllocatedDisplayIDs.hasBit(id)) {
1133 const DisplayData& disp(mDisplayData[id]);
1134 if (mHwc && disp.list) {
1135 numLayers = disp.list->numHwLayers;
1136 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
1137 // with HWC 1.1, the last layer is always the HWC_FRAMEBUFFER_TARGET,
1138 // which we ignore when iterating through the layer list.
1139 ALOGE_IF(!numLayers, "mDisplayData[%d].list->numHwLayers is 0", id);
1140 if (numLayers) {
1141 numLayers--;
1142 }
1143 }
1144 }
1145 }
1146 return getLayerIterator(id, numLayers);
1147 }
1148
1149 // Converts a PixelFormat to a human-readable string. Max 11 chars.
1150 // (Could use a table of prefab String8 objects.)
getFormatStr(PixelFormat format)1151 static String8 getFormatStr(PixelFormat format) {
1152 switch (format) {
1153 case PIXEL_FORMAT_RGBA_8888: return String8("RGBA_8888");
1154 case PIXEL_FORMAT_RGBX_8888: return String8("RGBx_8888");
1155 case PIXEL_FORMAT_RGB_888: return String8("RGB_888");
1156 case PIXEL_FORMAT_RGB_565: return String8("RGB_565");
1157 case PIXEL_FORMAT_BGRA_8888: return String8("BGRA_8888");
1158 case HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED:
1159 return String8("ImplDef");
1160 default:
1161 String8 result;
1162 result.appendFormat("? %08x", format);
1163 return result;
1164 }
1165 }
1166
dump(String8 & result) const1167 void HWComposer::dump(String8& result) const {
1168 Mutex::Autolock _l(mDisplayLock);
1169 if (mHwc) {
1170 result.appendFormat("Hardware Composer state (version %08x):\n", hwcApiVersion(mHwc));
1171 result.appendFormat(" mDebugForceFakeVSync=%d\n", mDebugForceFakeVSync);
1172 for (size_t i=0 ; i<mNumDisplays ; i++) {
1173 const DisplayData& disp(mDisplayData[i]);
1174 if (!disp.connected)
1175 continue;
1176
1177 const Vector< sp<Layer> >& visibleLayersSortedByZ =
1178 mFlinger->getLayerSortedByZForHwcDisplay(i);
1179
1180
1181 result.appendFormat(" Display[%zd] configurations (* current):\n", i);
1182 for (size_t c = 0; c < disp.configs.size(); ++c) {
1183 const DisplayConfig& config(disp.configs[c]);
1184 result.appendFormat(" %s%zd: %ux%u, xdpi=%f, ydpi=%f"
1185 ", refresh=%" PRId64 ", colorTransform=%d\n",
1186 c == disp.currentConfig ? "* " : "", c,
1187 config.width, config.height, config.xdpi, config.ydpi,
1188 config.refresh, config.colorTransform);
1189 }
1190
1191 if (disp.list) {
1192 result.appendFormat(
1193 " numHwLayers=%zu, flags=%08x\n",
1194 disp.list->numHwLayers, disp.list->flags);
1195
1196 result.append(
1197 " type | handle | hint | flag | tr | blnd | format | source crop (l,t,r,b) | frame | name \n"
1198 "-----------+----------+------+------+----+------+-------------+--------------------------------+------------------------+------\n");
1199 // " _________ | ________ | ____ | ____ | __ | ____ | ___________ |_____._,_____._,_____._,_____._ |_____,_____,_____,_____ | ___...
1200 for (size_t i=0 ; i<disp.list->numHwLayers ; i++) {
1201 const hwc_layer_1_t&l = disp.list->hwLayers[i];
1202 int32_t format = -1;
1203 String8 name("unknown");
1204
1205 if (i < visibleLayersSortedByZ.size()) {
1206 const sp<Layer>& layer(visibleLayersSortedByZ[i]);
1207 const sp<GraphicBuffer>& buffer(
1208 layer->getActiveBuffer());
1209 if (buffer != NULL) {
1210 format = buffer->getPixelFormat();
1211 }
1212 name = layer->getName();
1213 }
1214
1215 int type = l.compositionType;
1216 if (type == HWC_FRAMEBUFFER_TARGET) {
1217 name = "HWC_FRAMEBUFFER_TARGET";
1218 format = disp.format;
1219 }
1220
1221 static char const* compositionTypeName[] = {
1222 "GLES",
1223 "HWC",
1224 "BKGND",
1225 "FB TARGET",
1226 "SIDEBAND",
1227 "HWC_CURSOR",
1228 "UNKNOWN"};
1229 if (type >= NELEM(compositionTypeName))
1230 type = NELEM(compositionTypeName) - 1;
1231
1232 String8 formatStr = getFormatStr(format);
1233 if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) {
1234 result.appendFormat(
1235 " %9s | %08" PRIxPTR " | %04x | %04x | %02x | %04x | %-11s |%7.1f,%7.1f,%7.1f,%7.1f |%5d,%5d,%5d,%5d | %s\n",
1236 compositionTypeName[type],
1237 intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, formatStr.string(),
1238 l.sourceCropf.left, l.sourceCropf.top, l.sourceCropf.right, l.sourceCropf.bottom,
1239 l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom,
1240 name.string());
1241 } else {
1242 result.appendFormat(
1243 " %9s | %08" PRIxPTR " | %04x | %04x | %02x | %04x | %-11s |%7d,%7d,%7d,%7d |%5d,%5d,%5d,%5d | %s\n",
1244 compositionTypeName[type],
1245 intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, formatStr.string(),
1246 l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom,
1247 l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom,
1248 name.string());
1249 }
1250 }
1251 }
1252 }
1253 }
1254
1255 if (mHwc && mHwc->dump) {
1256 const size_t SIZE = 4096;
1257 char buffer[SIZE];
1258 mHwc->dump(mHwc, buffer, SIZE);
1259 result.append(buffer);
1260 }
1261 }
1262
1263 // ---------------------------------------------------------------------------
1264
VSyncThread(HWComposer & hwc)1265 HWComposer::VSyncThread::VSyncThread(HWComposer& hwc)
1266 : mHwc(hwc), mEnabled(false),
1267 mNextFakeVSync(0),
1268 mRefreshPeriod(hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY))
1269 {
1270 }
1271
setEnabled(bool enabled)1272 void HWComposer::VSyncThread::setEnabled(bool enabled) {
1273 Mutex::Autolock _l(mLock);
1274 if (mEnabled != enabled) {
1275 mEnabled = enabled;
1276 mCondition.signal();
1277 }
1278 }
1279
onFirstRef()1280 void HWComposer::VSyncThread::onFirstRef() {
1281 run("VSyncThread", PRIORITY_URGENT_DISPLAY + PRIORITY_MORE_FAVORABLE);
1282 }
1283
threadLoop()1284 bool HWComposer::VSyncThread::threadLoop() {
1285 { // scope for lock
1286 Mutex::Autolock _l(mLock);
1287 while (!mEnabled) {
1288 mCondition.wait(mLock);
1289 }
1290 }
1291
1292 const nsecs_t period = mRefreshPeriod;
1293 const nsecs_t now = systemTime(CLOCK_MONOTONIC);
1294 nsecs_t next_vsync = mNextFakeVSync;
1295 nsecs_t sleep = next_vsync - now;
1296 if (sleep < 0) {
1297 // we missed, find where the next vsync should be
1298 sleep = (period - ((now - next_vsync) % period));
1299 next_vsync = now + sleep;
1300 }
1301 mNextFakeVSync = next_vsync + period;
1302
1303 struct timespec spec;
1304 spec.tv_sec = next_vsync / 1000000000;
1305 spec.tv_nsec = next_vsync % 1000000000;
1306
1307 int err;
1308 do {
1309 err = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &spec, NULL);
1310 } while (err<0 && errno == EINTR);
1311
1312 if (err == 0) {
1313 mHwc.mEventHandler.onVSyncReceived(0, next_vsync);
1314 }
1315
1316 return true;
1317 }
1318
DisplayData()1319 HWComposer::DisplayData::DisplayData()
1320 : configs(),
1321 currentConfig(0),
1322 format(HAL_PIXEL_FORMAT_RGBA_8888),
1323 connected(false),
1324 hasFbComp(false), hasOvComp(false),
1325 capacity(0), list(NULL),
1326 framebufferTarget(NULL), fbTargetHandle(0),
1327 lastRetireFence(Fence::NO_FENCE), lastDisplayFence(Fence::NO_FENCE),
1328 outbufHandle(NULL), outbufAcquireFence(Fence::NO_FENCE),
1329 events(0)
1330 {}
1331
~DisplayData()1332 HWComposer::DisplayData::~DisplayData() {
1333 free(list);
1334 }
1335
1336 // ---------------------------------------------------------------------------
1337 }; // namespace android
1338