2 * Copyright (C) 2010 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 #define LOG_TAG "ConsumerBase"
20 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
21 //#define LOG_NDEBUG 0
23 #define EGL_EGLEXT_PROTOTYPES
26 #include <EGL/eglext.h>
28 #include <hardware/hardware.h>
30 #include <cutils/atomic.h>
32 #include <gui/BufferItem.h>
33 #include <gui/ISurfaceComposer.h>
34 #include <gui/SurfaceComposerClient.h>
35 #include <gui/ConsumerBase.h>
37 #include <private/gui/ComposerService.h>
39 #include <utils/Log.h>
40 #include <utils/String8.h>
41 #include <utils/Trace.h>
43 // Macros for including the ConsumerBase name in log messages
44 #define CB_LOGV(x, ...) ALOGV("[%s] " x, mName.string(), ##__VA_ARGS__)
45 //#define CB_LOGD(x, ...) ALOGD("[%s] " x, mName.string(), ##__VA_ARGS__)
46 //#define CB_LOGI(x, ...) ALOGI("[%s] " x, mName.string(), ##__VA_ARGS__)
47 //#define CB_LOGW(x, ...) ALOGW("[%s] " x, mName.string(), ##__VA_ARGS__)
48 #define CB_LOGE(x, ...) ALOGE("[%s] " x, mName.string(), ##__VA_ARGS__)
52 // Get an ID that's unique within this process.
53 static int32_t createProcessUniqueId() {
54 static volatile int32_t globalCounter = 0;
55 return android_atomic_inc(&globalCounter);
58 ConsumerBase::ConsumerBase(const sp<IGraphicBufferConsumer>& bufferQueue, bool controlledByApp) :
60 mConsumer(bufferQueue),
61 mPrevFinalReleaseFence(Fence::NO_FENCE) {
62 // Choose a name using the PID and a process-unique ID.
63 mName = String8::format("unnamed-%d-%d", getpid(), createProcessUniqueId());
65 // Note that we can't create an sp<...>(this) in a ctor that will not keep a
66 // reference once the ctor ends, as that would cause the refcount of 'this'
67 // dropping to 0 at the end of the ctor. Since all we need is a wp<...>
68 // that's what we create.
69 wp<ConsumerListener> listener = static_cast<ConsumerListener*>(this);
70 sp<IConsumerListener> proxy = new BufferQueue::ProxyConsumerListener(listener);
72 status_t err = mConsumer->consumerConnect(proxy, controlledByApp);
73 if (err != NO_ERROR) {
74 CB_LOGE("ConsumerBase: error connecting to BufferQueue: %s (%d)",
77 mConsumer->setConsumerName(mName);
81 ConsumerBase::~ConsumerBase() {
82 CB_LOGV("~ConsumerBase");
83 Mutex::Autolock lock(mMutex);
85 // Verify that abandon() has been called before we get here. This should
86 // be done by ConsumerBase::onLastStrongRef(), but it's possible for a
87 // derived class to override that method and not call
88 // ConsumerBase::onLastStrongRef().
89 LOG_ALWAYS_FATAL_IF(!mAbandoned, "[%s] ~ConsumerBase was called, but the "
90 "consumer is not abandoned!", mName.string());
93 void ConsumerBase::onLastStrongRef(const void* id __attribute__((unused))) {
97 void ConsumerBase::freeBufferLocked(int slotIndex) {
98 CB_LOGV("freeBufferLocked: slotIndex=%d", slotIndex);
99 mSlots[slotIndex].mGraphicBuffer = 0;
100 mSlots[slotIndex].mFence = Fence::NO_FENCE;
101 mSlots[slotIndex].mFrameNumber = 0;
104 void ConsumerBase::onFrameAvailable(const BufferItem& item) {
105 CB_LOGV("onFrameAvailable");
107 sp<FrameAvailableListener> listener;
108 { // scope for the lock
109 Mutex::Autolock lock(mFrameAvailableMutex);
110 listener = mFrameAvailableListener.promote();
113 if (listener != NULL) {
114 CB_LOGV("actually calling onFrameAvailable");
115 listener->onFrameAvailable(item);
119 void ConsumerBase::onFrameReplaced(const BufferItem &item) {
120 CB_LOGV("onFrameReplaced");
122 sp<FrameAvailableListener> listener;
124 Mutex::Autolock lock(mFrameAvailableMutex);
125 listener = mFrameAvailableListener.promote();
128 if (listener != NULL) {
129 CB_LOGV("actually calling onFrameReplaced");
130 listener->onFrameReplaced(item);
134 void ConsumerBase::onBuffersReleased() {
135 Mutex::Autolock lock(mMutex);
137 CB_LOGV("onBuffersReleased");
140 // Nothing to do if we're already abandoned.
145 mConsumer->getReleasedBuffers(&mask);
146 for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
147 if (mask & (1ULL << i)) {
153 void ConsumerBase::onSidebandStreamChanged() {
156 void ConsumerBase::abandon() {
158 Mutex::Autolock lock(mMutex);
166 void ConsumerBase::abandonLocked() {
167 CB_LOGV("abandonLocked");
169 CB_LOGE("abandonLocked: ConsumerBase is abandoned!");
172 for (int i =0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
175 // disconnect from the BufferQueue
176 mConsumer->consumerDisconnect();
180 bool ConsumerBase::isAbandoned() {
181 Mutex::Autolock _l(mMutex);
185 void ConsumerBase::setFrameAvailableListener(
186 const wp<FrameAvailableListener>& listener) {
187 CB_LOGV("setFrameAvailableListener");
188 Mutex::Autolock lock(mFrameAvailableMutex);
189 mFrameAvailableListener = listener;
192 status_t ConsumerBase::detachBuffer(int slot) {
193 CB_LOGV("detachBuffer");
194 Mutex::Autolock lock(mMutex);
197 CB_LOGE("detachBuffer: ConsumerBase is abandoned!");
201 status_t result = mConsumer->detachBuffer(slot);
202 if (result != NO_ERROR) {
203 CB_LOGE("Failed to detach buffer: %d", result);
207 freeBufferLocked(slot);
212 status_t ConsumerBase::setDefaultBufferSize(uint32_t width, uint32_t height) {
213 Mutex::Autolock _l(mMutex);
215 CB_LOGE("setDefaultBufferSize: ConsumerBase is abandoned!");
218 return mConsumer->setDefaultBufferSize(width, height);
221 status_t ConsumerBase::setDefaultBufferFormat(PixelFormat defaultFormat) {
222 Mutex::Autolock _l(mMutex);
224 CB_LOGE("setDefaultBufferFormat: ConsumerBase is abandoned!");
227 return mConsumer->setDefaultBufferFormat(defaultFormat);
230 status_t ConsumerBase::setDefaultBufferDataSpace(
231 android_dataspace defaultDataSpace) {
232 Mutex::Autolock _l(mMutex);
234 CB_LOGE("setDefaultBufferDataSpace: ConsumerBase is abandoned!");
237 return mConsumer->setDefaultBufferDataSpace(defaultDataSpace);
240 status_t ConsumerBase::getOccupancyHistory(bool forceFlush,
241 std::vector<OccupancyTracker::Segment>* outHistory) {
242 Mutex::Autolock _l(mMutex);
244 CB_LOGE("getOccupancyHistory: ConsumerBase is abandoned!");
247 return mConsumer->getOccupancyHistory(forceFlush, outHistory);
250 status_t ConsumerBase::discardFreeBuffers() {
251 Mutex::Autolock _l(mMutex);
253 CB_LOGE("discardFreeBuffers: ConsumerBase is abandoned!");
256 status_t err = mConsumer->discardFreeBuffers();
261 mConsumer->getReleasedBuffers(&mask);
262 for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
263 if (mask & (1ULL << i)) {
270 void ConsumerBase::dumpState(String8& result) const {
271 dumpState(result, "");
274 void ConsumerBase::dumpState(String8& result, const char* prefix) const {
275 Mutex::Autolock _l(mMutex);
276 dumpLocked(result, prefix);
279 void ConsumerBase::dumpLocked(String8& result, const char* prefix) const {
280 result.appendFormat("%smAbandoned=%d\n", prefix, int(mAbandoned));
283 String8 consumerState;
284 mConsumer->dumpState(String8(prefix), &consumerState);
285 result.append(consumerState);
289 status_t ConsumerBase::acquireBufferLocked(BufferItem *item,
290 nsecs_t presentWhen, uint64_t maxFrameNumber) {
292 CB_LOGE("acquireBufferLocked: ConsumerBase is abandoned!");
296 status_t err = mConsumer->acquireBuffer(item, presentWhen, maxFrameNumber);
297 if (err != NO_ERROR) {
301 if (item->mGraphicBuffer != NULL) {
302 if (mSlots[item->mSlot].mGraphicBuffer != NULL) {
303 freeBufferLocked(item->mSlot);
305 mSlots[item->mSlot].mGraphicBuffer = item->mGraphicBuffer;
308 mSlots[item->mSlot].mFrameNumber = item->mFrameNumber;
309 mSlots[item->mSlot].mFence = item->mFence;
311 CB_LOGV("acquireBufferLocked: -> slot=%d/%" PRIu64,
312 item->mSlot, item->mFrameNumber);
317 status_t ConsumerBase::addReleaseFence(int slot,
318 const sp<GraphicBuffer> graphicBuffer, const sp<Fence>& fence) {
319 Mutex::Autolock lock(mMutex);
320 return addReleaseFenceLocked(slot, graphicBuffer, fence);
323 status_t ConsumerBase::addReleaseFenceLocked(int slot,
324 const sp<GraphicBuffer> graphicBuffer, const sp<Fence>& fence) {
325 CB_LOGV("addReleaseFenceLocked: slot=%d", slot);
327 // If consumer no longer tracks this graphicBuffer, we can safely
328 // drop this fence, as it will never be received by the producer.
329 if (!stillTracking(slot, graphicBuffer)) {
333 if (!mSlots[slot].mFence.get()) {
334 mSlots[slot].mFence = fence;
338 // Check status of fences first because merging is expensive.
339 // Merging an invalid fence with any other fence results in an
341 auto currentStatus = mSlots[slot].mFence->getStatus();
342 if (currentStatus == Fence::Status::Invalid) {
343 CB_LOGE("Existing fence has invalid state");
347 auto incomingStatus = fence->getStatus();
348 if (incomingStatus == Fence::Status::Invalid) {
349 CB_LOGE("New fence has invalid state");
350 mSlots[slot].mFence = fence;
354 // If both fences are signaled or both are unsignaled, we need to merge
355 // them to get an accurate timestamp.
356 if (currentStatus == incomingStatus) {
357 char fenceName[32] = {};
358 snprintf(fenceName, 32, "%.28s:%d", mName.string(), slot);
359 sp<Fence> mergedFence = Fence::merge(
360 fenceName, mSlots[slot].mFence, fence);
361 if (!mergedFence.get()) {
362 CB_LOGE("failed to merge release fences");
363 // synchronization is broken, the best we can do is hope fences
364 // signal in order so the new fence will act like a union
365 mSlots[slot].mFence = fence;
368 mSlots[slot].mFence = mergedFence;
369 } else if (incomingStatus == Fence::Status::Unsignaled) {
370 // If one fence has signaled and the other hasn't, the unsignaled
371 // fence will approximately correspond with the correct timestamp.
372 // There's a small race if both fences signal at about the same time
373 // and their statuses are retrieved with unfortunate timing. However,
374 // by this point, they will have both signaled and only the timestamp
375 // will be slightly off; any dependencies after this point will
376 // already have been met.
377 mSlots[slot].mFence = fence;
379 // else if (currentStatus == Fence::Status::Unsignaled) is a no-op.
384 status_t ConsumerBase::releaseBufferLocked(
385 int slot, const sp<GraphicBuffer> graphicBuffer,
386 EGLDisplay display, EGLSyncKHR eglFence) {
388 CB_LOGE("releaseBufferLocked: ConsumerBase is abandoned!");
391 // If consumer no longer tracks this graphicBuffer (we received a new
392 // buffer on the same slot), the buffer producer is definitely no longer
394 if (!stillTracking(slot, graphicBuffer)) {
398 CB_LOGV("releaseBufferLocked: slot=%d/%" PRIu64,
399 slot, mSlots[slot].mFrameNumber);
400 status_t err = mConsumer->releaseBuffer(slot, mSlots[slot].mFrameNumber,
401 display, eglFence, mSlots[slot].mFence);
402 if (err == IGraphicBufferConsumer::STALE_BUFFER_SLOT) {
403 freeBufferLocked(slot);
406 mPrevFinalReleaseFence = mSlots[slot].mFence;
407 mSlots[slot].mFence = Fence::NO_FENCE;
412 bool ConsumerBase::stillTracking(int slot,
413 const sp<GraphicBuffer> graphicBuffer) {
414 if (slot < 0 || slot >= BufferQueue::NUM_BUFFER_SLOTS) {
417 return (mSlots[slot].mGraphicBuffer != NULL &&
418 mSlots[slot].mGraphicBuffer->handle == graphicBuffer->handle);
421 } // namespace android