| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define ATRACE_TAG ATRACE_TAG_GRAPHICS |
| |
| // Uncomment this to remove support for HWC_DEVICE_API_VERSION_0_3 and older |
| // #define HWC_REMOVE_DEPRECATED_VERSIONS 1 |
| |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/types.h> |
| |
| #include <utils/Errors.h> |
| #include <utils/String8.h> |
| #include <utils/Thread.h> |
| #include <utils/Trace.h> |
| #include <utils/Vector.h> |
| |
| #include <ui/GraphicBuffer.h> |
| |
| #include <hardware/hardware.h> |
| #include <hardware/hwcomposer.h> |
| |
| #include <cutils/log.h> |
| #include <cutils/properties.h> |
| |
| #include "Layer.h" // needed only for debugging |
| #include "LayerBase.h" |
| #include "HWComposer.h" |
| #include "SurfaceFlinger.h" |
| |
| namespace android { |
| |
| // --------------------------------------------------------------------------- |
| // Support for HWC_DEVICE_API_VERSION_0_3 and older: |
| // Since v0.3 is deprecated and support will be dropped soon, as much as |
| // possible the code is written to target v1.0. When using a v0.3 HWC, we |
| // allocate v0.3 structures, but assign them to v1.0 pointers. Fields that |
| // exist in both versions are located at the same offset, so in most cases we |
| // can just use the v1.0 pointer without branches or casts. |
| |
| #if HWC_REMOVE_DEPRECATED_VERSIONS |
| // We need complete types with to satisfy semantic checks, even though the |
| // code paths that use these won't get executed at runtime (and will likely be |
| // dead-code-eliminated). When we remove the code to support v0.3 we can remove |
| // these as well. |
| typedef hwc_layer_1_t hwc_layer_t; |
| typedef hwc_layer_list_1_t hwc_layer_list_t; |
| typedef hwc_composer_device_1_t hwc_composer_device_t; |
| #endif |
| |
| // This function assumes we've already rejected HWC's with lower-than-required |
| // versions. Don't use it for the initial "does HWC meet requirements" check! |
| static bool hwcHasVersion(const hwc_composer_device_1_t* hwc, uint32_t version) { |
| if (HWC_REMOVE_DEPRECATED_VERSIONS && |
| version <= HWC_DEVICE_API_VERSION_1_0) { |
| return true; |
| } else { |
| return hwc->common.version >= version; |
| } |
| } |
| |
| static size_t sizeofHwcLayerList(const hwc_composer_device_1_t* hwc, |
| size_t numLayers) { |
| if (hwcHasVersion(hwc, HWC_DEVICE_API_VERSION_1_0)) { |
| return sizeof(hwc_layer_list_1_t) + numLayers*sizeof(hwc_layer_1_t); |
| } else { |
| return sizeof(hwc_layer_list_t) + numLayers*sizeof(hwc_layer_t); |
| } |
| } |
| |
| // --------------------------------------------------------------------------- |
| |
| struct HWComposer::cb_context { |
| struct callbacks : public hwc_procs_t { |
| // these are here to facilitate the transition when adding |
| // new callbacks (an implementation can check for NULL before |
| // calling a new callback). |
| void (*zero[4])(void); |
| }; |
| callbacks procs; |
| HWComposer* hwc; |
| }; |
| |
| // --------------------------------------------------------------------------- |
| |
| HWComposer::HWComposer( |
| const sp<SurfaceFlinger>& flinger, |
| EventHandler& handler, |
| nsecs_t refreshPeriod) |
| : mFlinger(flinger), |
| mModule(0), mHwc(0), mList(0), mCapacity(0), |
| mNumOVLayers(0), mNumFBLayers(0), |
| mCBContext(new cb_context), |
| mEventHandler(handler), |
| mRefreshPeriod(refreshPeriod), |
| mVSyncCount(0), mDebugForceFakeVSync(false) |
| { |
| char value[PROPERTY_VALUE_MAX]; |
| property_get("debug.sf.no_hw_vsync", value, "0"); |
| mDebugForceFakeVSync = atoi(value); |
| |
| bool needVSyncThread = true; |
| int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule); |
| ALOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID); |
| if (err == 0) { |
| err = hwc_open_1(mModule, &mHwc); |
| ALOGE_IF(err, "%s device failed to initialize (%s)", |
| HWC_HARDWARE_COMPOSER, strerror(-err)); |
| if (err == 0) { |
| if (HWC_REMOVE_DEPRECATED_VERSIONS && |
| mHwc->common.version < HWC_DEVICE_API_VERSION_1_0) { |
| ALOGE("%s device version %#x too old, will not be used", |
| HWC_HARDWARE_COMPOSER, mHwc->common.version); |
| hwc_close_1(mHwc); |
| mHwc = NULL; |
| } |
| } |
| |
| if (mHwc) { |
| if (hwcHasVersion(mHwc, HWC_DEVICE_API_VERSION_0_3)) { |
| // always turn vsync off when we start |
| mHwc->methods->eventControl(mHwc, HWC_EVENT_VSYNC, 0); |
| needVSyncThread = false; |
| } |
| if (mHwc->registerProcs) { |
| mCBContext->hwc = this; |
| mCBContext->procs.invalidate = &hook_invalidate; |
| mCBContext->procs.vsync = &hook_vsync; |
| mHwc->registerProcs(mHwc, &mCBContext->procs); |
| memset(mCBContext->procs.zero, 0, sizeof(mCBContext->procs.zero)); |
| } |
| } |
| } |
| |
| if (needVSyncThread) { |
| // we don't have VSYNC support, we need to fake it |
| mVSyncThread = new VSyncThread(*this); |
| } |
| } |
| |
| HWComposer::~HWComposer() { |
| eventControl(EVENT_VSYNC, 0); |
| free(mList); |
| if (mVSyncThread != NULL) { |
| mVSyncThread->requestExitAndWait(); |
| } |
| if (mHwc) { |
| hwc_close_1(mHwc); |
| } |
| delete mCBContext; |
| } |
| |
| status_t HWComposer::initCheck() const { |
| return mHwc ? NO_ERROR : NO_INIT; |
| } |
| |
| void HWComposer::hook_invalidate(struct hwc_procs* procs) { |
| reinterpret_cast<cb_context *>(procs)->hwc->invalidate(); |
| } |
| |
| void HWComposer::hook_vsync(struct hwc_procs* procs, int dpy, int64_t timestamp) { |
| reinterpret_cast<cb_context *>(procs)->hwc->vsync(dpy, timestamp); |
| } |
| |
| void HWComposer::invalidate() { |
| mFlinger->repaintEverything(); |
| } |
| |
| void HWComposer::vsync(int dpy, int64_t timestamp) { |
| ATRACE_INT("VSYNC", ++mVSyncCount&1); |
| mEventHandler.onVSyncReceived(dpy, timestamp); |
| } |
| |
| void HWComposer::eventControl(int event, int enabled) { |
| status_t err = NO_ERROR; |
| if (mHwc && mHwc->common.version >= HWC_DEVICE_API_VERSION_0_3) { |
| if (!mDebugForceFakeVSync) { |
| err = mHwc->methods->eventControl(mHwc, event, enabled); |
| // error here should not happen -- not sure what we should |
| // do if it does. |
| ALOGE_IF(err, "eventControl(%d, %d) failed %s", |
| event, enabled, strerror(-err)); |
| } |
| } |
| |
| if (err == NO_ERROR && mVSyncThread != NULL) { |
| mVSyncThread->setEnabled(enabled); |
| } |
| } |
| |
| status_t HWComposer::createWorkList(size_t numLayers) { |
| if (mHwc) { |
| if (!mList || mCapacity < numLayers) { |
| free(mList); |
| size_t size = sizeofHwcLayerList(mHwc, numLayers); |
| mList = (hwc_layer_list_1_t*)malloc(size); |
| mCapacity = numLayers; |
| } |
| mList->flags = HWC_GEOMETRY_CHANGED; |
| mList->numHwLayers = numLayers; |
| } |
| return NO_ERROR; |
| } |
| |
| status_t HWComposer::prepare() const { |
| int err = mHwc->prepare(mHwc, mList); |
| if (err == NO_ERROR) { |
| size_t numOVLayers = 0; |
| size_t numFBLayers = 0; |
| size_t count = mList->numHwLayers; |
| for (size_t i=0 ; i<count ; i++) { |
| hwc_layer_1_t* l = NULL; |
| if (hwcHasVersion(mHwc, HWC_DEVICE_API_VERSION_1_0)) { |
| l = &mList->hwLayers[i]; |
| } else { |
| // mList really has hwc_layer_list_t memory layout |
| hwc_layer_list_t* list = (hwc_layer_list_t*)mList; |
| hwc_layer_t* layer = &list->hwLayers[i]; |
| l = (hwc_layer_1_t*)layer; |
| } |
| if (l->flags & HWC_SKIP_LAYER) { |
| l->compositionType = HWC_FRAMEBUFFER; |
| } |
| switch (l->compositionType) { |
| case HWC_OVERLAY: |
| numOVLayers++; |
| break; |
| case HWC_FRAMEBUFFER: |
| numFBLayers++; |
| break; |
| } |
| } |
| mNumOVLayers = numOVLayers; |
| mNumFBLayers = numFBLayers; |
| } |
| return (status_t)err; |
| } |
| |
| size_t HWComposer::getLayerCount(int type) const { |
| switch (type) { |
| case HWC_OVERLAY: |
| return mNumOVLayers; |
| case HWC_FRAMEBUFFER: |
| return mNumFBLayers; |
| } |
| return 0; |
| } |
| |
| status_t HWComposer::commit(void* fbDisplay, void* fbSurface) const { |
| int err = NO_ERROR; |
| if (mHwc) { |
| err = mHwc->set(mHwc, fbDisplay, fbSurface, mList); |
| if (mList) { |
| mList->flags &= ~HWC_GEOMETRY_CHANGED; |
| } |
| } |
| return (status_t)err; |
| } |
| |
| status_t HWComposer::release() const { |
| if (mHwc) { |
| if (hwcHasVersion(mHwc, HWC_DEVICE_API_VERSION_0_3)) { |
| mHwc->methods->eventControl(mHwc, HWC_EVENT_VSYNC, 0); |
| } |
| int err = mHwc->set(mHwc, NULL, NULL, NULL); |
| if (err < 0) { |
| return (status_t)err; |
| } |
| |
| if (hwcHasVersion(mHwc, HWC_DEVICE_API_VERSION_1_0)) { |
| if (mHwc->methods && mHwc->methods->blank) { |
| err = mHwc->methods->blank(mHwc, 1); |
| } |
| } |
| return (status_t)err; |
| } |
| return NO_ERROR; |
| } |
| |
| status_t HWComposer::acquire() const { |
| if (mHwc) { |
| if (hwcHasVersion(mHwc, HWC_DEVICE_API_VERSION_1_0)) { |
| if (mHwc->methods && mHwc->methods->blank) { |
| int err = mHwc->methods->blank(mHwc, 0); |
| return (status_t)err; |
| } |
| } |
| } |
| |
| return NO_ERROR; |
| } |
| |
| status_t HWComposer::disable() { |
| if (mHwc) { |
| free(mList); |
| mList = NULL; |
| int err = mHwc->prepare(mHwc, NULL); |
| return (status_t)err; |
| } |
| return NO_ERROR; |
| } |
| |
| size_t HWComposer::getNumLayers() const { |
| return mList ? mList->numHwLayers : 0; |
| } |
| |
| /* |
| * Helper template to implement a concrete HWCLayer |
| * This holds the pointer to the concrete hwc layer type |
| * and implements the "iterable" side of HWCLayer. |
| */ |
| template<typename CONCRETE, typename HWCTYPE> |
| class Iterable : public HWComposer::HWCLayer { |
| protected: |
| HWCTYPE* const mLayerList; |
| HWCTYPE* mCurrentLayer; |
| Iterable(HWCTYPE* layer) : mLayerList(layer), mCurrentLayer(layer) { } |
| inline HWCTYPE const * getLayer() const { return mCurrentLayer; } |
| inline HWCTYPE* getLayer() { return mCurrentLayer; } |
| virtual ~Iterable() { } |
| private: |
| // returns a copy of ourselves |
| virtual HWComposer::HWCLayer* dup() { |
| return new CONCRETE( static_cast<const CONCRETE&>(*this) ); |
| } |
| virtual status_t setLayer(size_t index) { |
| mCurrentLayer = &mLayerList[index]; |
| return NO_ERROR; |
| } |
| }; |
| |
| // #if !HWC_REMOVE_DEPRECATED_VERSIONS |
| /* |
| * Concrete implementation of HWCLayer for HWC_DEVICE_API_VERSION_0_3 |
| * This implements the HWCLayer side of HWCIterableLayer. |
| */ |
| class HWCLayerVersion0 : public Iterable<HWCLayerVersion0, hwc_layer_t> { |
| public: |
| HWCLayerVersion0(hwc_layer_t* layer) |
| : Iterable<HWCLayerVersion0, hwc_layer_t>(layer) { } |
| |
| virtual int32_t getCompositionType() const { |
| return getLayer()->compositionType; |
| } |
| virtual uint32_t getHints() const { |
| return getLayer()->hints; |
| } |
| virtual int getAndResetReleaseFenceFd() { |
| // not supported on VERSION_03 |
| return -1; |
| } |
| virtual void setAcquireFenceFd(int fenceFd) { |
| if (fenceFd != -1) { |
| ALOGE("HWC 0.x can't handle acquire fences"); |
| close(fenceFd); |
| } |
| } |
| |
| virtual void setDefaultState() { |
| getLayer()->compositionType = HWC_FRAMEBUFFER; |
| getLayer()->hints = 0; |
| getLayer()->flags = HWC_SKIP_LAYER; |
| getLayer()->transform = 0; |
| getLayer()->blending = HWC_BLENDING_NONE; |
| getLayer()->visibleRegionScreen.numRects = 0; |
| getLayer()->visibleRegionScreen.rects = NULL; |
| } |
| virtual void setSkip(bool skip) { |
| if (skip) { |
| getLayer()->flags |= HWC_SKIP_LAYER; |
| } else { |
| getLayer()->flags &= ~HWC_SKIP_LAYER; |
| } |
| } |
| virtual void setBlending(uint32_t blending) { |
| getLayer()->blending = blending; |
| } |
| virtual void setTransform(uint32_t transform) { |
| getLayer()->transform = transform; |
| } |
| virtual void setFrame(const Rect& frame) { |
| reinterpret_cast<Rect&>(getLayer()->displayFrame) = frame; |
| } |
| virtual void setCrop(const Rect& crop) { |
| reinterpret_cast<Rect&>(getLayer()->sourceCrop) = crop; |
| } |
| virtual void setVisibleRegionScreen(const Region& reg) { |
| getLayer()->visibleRegionScreen.rects = |
| reinterpret_cast<hwc_rect_t const *>( |
| reg.getArray(&getLayer()->visibleRegionScreen.numRects)); |
| } |
| virtual void setBuffer(const sp<GraphicBuffer>& buffer) { |
| if (buffer == 0 || buffer->handle == 0) { |
| getLayer()->compositionType = HWC_FRAMEBUFFER; |
| getLayer()->flags |= HWC_SKIP_LAYER; |
| getLayer()->handle = 0; |
| } else { |
| getLayer()->handle = buffer->handle; |
| } |
| } |
| }; |
| // #endif // !HWC_REMOVE_DEPRECATED_VERSIONS |
| |
| /* |
| * Concrete implementation of HWCLayer for HWC_DEVICE_API_VERSION_1_0. |
| * This implements the HWCLayer side of HWCIterableLayer. |
| */ |
| class HWCLayerVersion1 : public Iterable<HWCLayerVersion1, hwc_layer_1_t> { |
| public: |
| HWCLayerVersion1(hwc_layer_1_t* layer) |
| : Iterable<HWCLayerVersion1, hwc_layer_1_t>(layer) { } |
| |
| virtual int32_t getCompositionType() const { |
| return getLayer()->compositionType; |
| } |
| virtual uint32_t getHints() const { |
| return getLayer()->hints; |
| } |
| virtual int getAndResetReleaseFenceFd() { |
| int fd = getLayer()->releaseFenceFd; |
| getLayer()->releaseFenceFd = -1; |
| return fd; |
| } |
| virtual void setAcquireFenceFd(int fenceFd) { |
| getLayer()->acquireFenceFd = fenceFd; |
| } |
| |
| virtual void setDefaultState() { |
| getLayer()->compositionType = HWC_FRAMEBUFFER; |
| getLayer()->hints = 0; |
| getLayer()->flags = HWC_SKIP_LAYER; |
| getLayer()->transform = 0; |
| getLayer()->blending = HWC_BLENDING_NONE; |
| getLayer()->visibleRegionScreen.numRects = 0; |
| getLayer()->visibleRegionScreen.rects = NULL; |
| getLayer()->acquireFenceFd = -1; |
| getLayer()->releaseFenceFd = -1; |
| } |
| virtual void setSkip(bool skip) { |
| if (skip) { |
| getLayer()->flags |= HWC_SKIP_LAYER; |
| } else { |
| getLayer()->flags &= ~HWC_SKIP_LAYER; |
| } |
| } |
| virtual void setBlending(uint32_t blending) { |
| getLayer()->blending = blending; |
| } |
| virtual void setTransform(uint32_t transform) { |
| getLayer()->transform = transform; |
| } |
| virtual void setFrame(const Rect& frame) { |
| reinterpret_cast<Rect&>(getLayer()->displayFrame) = frame; |
| } |
| virtual void setCrop(const Rect& crop) { |
| reinterpret_cast<Rect&>(getLayer()->sourceCrop) = crop; |
| } |
| virtual void setVisibleRegionScreen(const Region& reg) { |
| getLayer()->visibleRegionScreen.rects = |
| reinterpret_cast<hwc_rect_t const *>( |
| reg.getArray(&getLayer()->visibleRegionScreen.numRects)); |
| } |
| virtual void setBuffer(const sp<GraphicBuffer>& buffer) { |
| if (buffer == 0 || buffer->handle == 0) { |
| getLayer()->compositionType = HWC_FRAMEBUFFER; |
| getLayer()->flags |= HWC_SKIP_LAYER; |
| getLayer()->handle = 0; |
| } else { |
| getLayer()->handle = buffer->handle; |
| } |
| } |
| }; |
| |
| /* |
| * returns an iterator initialized at a given index in the layer list |
| */ |
| HWComposer::LayerListIterator HWComposer::getLayerIterator(size_t index) { |
| if (!mList || index > mList->numHwLayers) { |
| return LayerListIterator(); |
| } |
| if (hwcHasVersion(mHwc, HWC_DEVICE_API_VERSION_1_0)) { |
| return LayerListIterator(new HWCLayerVersion1(mList->hwLayers), index); |
| } else { |
| hwc_layer_list_t* list0 = (hwc_layer_list_t*)mList; |
| return LayerListIterator(new HWCLayerVersion0(list0->hwLayers), index); |
| } |
| } |
| |
| /* |
| * returns an iterator on the beginning of the layer list |
| */ |
| HWComposer::LayerListIterator HWComposer::begin() { |
| return getLayerIterator(0); |
| } |
| |
| /* |
| * returns an iterator on the end of the layer list |
| */ |
| HWComposer::LayerListIterator HWComposer::end() { |
| return getLayerIterator(getNumLayers()); |
| } |
| |
| |
| |
| void HWComposer::dump(String8& result, char* buffer, size_t SIZE, |
| const Vector< sp<LayerBase> >& visibleLayersSortedByZ) const { |
| if (mHwc && mList) { |
| result.append("Hardware Composer state:\n"); |
| result.appendFormat(" mDebugForceFakeVSync=%d\n", |
| mDebugForceFakeVSync); |
| result.appendFormat(" numHwLayers=%u, flags=%08x\n", |
| mList->numHwLayers, mList->flags); |
| result.append( |
| " type | handle | hints | flags | tr | blend | format | source crop | frame name \n" |
| "----------+----------+----------+----------+----+-------+----------+---------------------------+--------------------------------\n"); |
| // " ________ | ________ | ________ | ________ | __ | _____ | ________ | [_____,_____,_____,_____] | [_____,_____,_____,_____] |
| for (size_t i=0 ; i<mList->numHwLayers ; i++) { |
| hwc_layer_1_t l; |
| if (hwcHasVersion(mHwc, HWC_DEVICE_API_VERSION_1_0)) { |
| l = mList->hwLayers[i]; |
| } else { |
| hwc_layer_list_t* list0 = (hwc_layer_list_t*)mList; |
| *(hwc_layer_t*)&l = list0->hwLayers[i]; |
| l.acquireFenceFd = l.releaseFenceFd = -1; |
| } |
| const sp<LayerBase> layer(visibleLayersSortedByZ[i]); |
| int32_t format = -1; |
| if (layer->getLayer() != NULL) { |
| const sp<GraphicBuffer>& buffer(layer->getLayer()->getActiveBuffer()); |
| if (buffer != NULL) { |
| format = buffer->getPixelFormat(); |
| } |
| } |
| result.appendFormat( |
| " %8s | %08x | %08x | %08x | %02x | %05x | %08x | [%5d,%5d,%5d,%5d] | [%5d,%5d,%5d,%5d] %s\n", |
| l.compositionType ? "OVERLAY" : "FB", |
| intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, format, |
| l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom, |
| l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom, |
| layer->getName().string()); |
| } |
| } |
| if (mHwc && hwcHasVersion(mHwc, HWC_DEVICE_API_VERSION_0_1) && mHwc->dump) { |
| mHwc->dump(mHwc, buffer, SIZE); |
| result.append(buffer); |
| } |
| } |
| |
| // --------------------------------------------------------------------------- |
| |
| HWComposer::VSyncThread::VSyncThread(HWComposer& hwc) |
| : mHwc(hwc), mEnabled(false), |
| mNextFakeVSync(0), |
| mRefreshPeriod(hwc.mRefreshPeriod) |
| { |
| } |
| |
| void HWComposer::VSyncThread::setEnabled(bool enabled) { |
| Mutex::Autolock _l(mLock); |
| mEnabled = enabled; |
| mCondition.signal(); |
| } |
| |
| void HWComposer::VSyncThread::onFirstRef() { |
| run("VSyncThread", PRIORITY_URGENT_DISPLAY + PRIORITY_MORE_FAVORABLE); |
| } |
| |
| bool HWComposer::VSyncThread::threadLoop() { |
| { // scope for lock |
| Mutex::Autolock _l(mLock); |
| while (!mEnabled) { |
| mCondition.wait(mLock); |
| } |
| } |
| |
| const nsecs_t period = mRefreshPeriod; |
| const nsecs_t now = systemTime(CLOCK_MONOTONIC); |
| nsecs_t next_vsync = mNextFakeVSync; |
| nsecs_t sleep = next_vsync - now; |
| if (sleep < 0) { |
| // we missed, find where the next vsync should be |
| sleep = (period - ((now - next_vsync) % period)); |
| next_vsync = now + sleep; |
| } |
| mNextFakeVSync = next_vsync + period; |
| |
| struct timespec spec; |
| spec.tv_sec = next_vsync / 1000000000; |
| spec.tv_nsec = next_vsync % 1000000000; |
| |
| int err; |
| do { |
| err = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &spec, NULL); |
| } while (err<0 && errno == EINTR); |
| |
| if (err == 0) { |
| mHwc.mEventHandler.onVSyncReceived(0, next_vsync); |
| } |
| |
| return true; |
| } |
| |
| // --------------------------------------------------------------------------- |
| }; // namespace android |