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Diffstat (limited to 'libs/gui/BufferQueue.cpp')
| -rw-r--r-- | libs/gui/BufferQueue.cpp | 957 |
1 files changed, 0 insertions, 957 deletions
diff --git a/libs/gui/BufferQueue.cpp b/libs/gui/BufferQueue.cpp deleted file mode 100644 index cb8abdd99218..000000000000 --- a/libs/gui/BufferQueue.cpp +++ /dev/null @@ -1,957 +0,0 @@ -/* - * Copyright (C) 2012 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 LOG_TAG "BufferQueue" -//#define LOG_NDEBUG 0 -#define ATRACE_TAG ATRACE_TAG_GRAPHICS - -#define GL_GLEXT_PROTOTYPES -#define EGL_EGLEXT_PROTOTYPES - -#include <EGL/egl.h> -#include <EGL/eglext.h> - -#include <gui/BufferQueue.h> -#include <gui/ISurfaceComposer.h> -#include <private/gui/ComposerService.h> - -#include <utils/Log.h> -#include <gui/SurfaceTexture.h> -#include <utils/Trace.h> - -// This compile option causes SurfaceTexture to return the buffer that is currently -// attached to the GL texture from dequeueBuffer when no other buffers are -// available. It requires the drivers (Gralloc, GL, OMX IL, and Camera) to do -// implicit cross-process synchronization to prevent the buffer from being -// written to before the buffer has (a) been detached from the GL texture and -// (b) all GL reads from the buffer have completed. - -// During refactoring, do not support dequeuing the current buffer -#undef ALLOW_DEQUEUE_CURRENT_BUFFER - -#ifdef ALLOW_DEQUEUE_CURRENT_BUFFER -#define FLAG_ALLOW_DEQUEUE_CURRENT_BUFFER true -#warning "ALLOW_DEQUEUE_CURRENT_BUFFER enabled" -#else -#define FLAG_ALLOW_DEQUEUE_CURRENT_BUFFER false -#endif - -// Macros for including the BufferQueue name in log messages -#define ST_LOGV(x, ...) ALOGV("[%s] "x, mConsumerName.string(), ##__VA_ARGS__) -#define ST_LOGD(x, ...) ALOGD("[%s] "x, mConsumerName.string(), ##__VA_ARGS__) -#define ST_LOGI(x, ...) ALOGI("[%s] "x, mConsumerName.string(), ##__VA_ARGS__) -#define ST_LOGW(x, ...) ALOGW("[%s] "x, mConsumerName.string(), ##__VA_ARGS__) -#define ST_LOGE(x, ...) ALOGE("[%s] "x, mConsumerName.string(), ##__VA_ARGS__) - -#define ATRACE_BUFFER_INDEX(index) \ - char ___traceBuf[1024]; \ - snprintf(___traceBuf, 1024, "%s: %d", mConsumerName.string(), (index)); \ - android::ScopedTrace ___bufTracer(ATRACE_TAG, ___traceBuf); - -namespace android { - -// Get an ID that's unique within this process. -static int32_t createProcessUniqueId() { - static volatile int32_t globalCounter = 0; - return android_atomic_inc(&globalCounter); -} - -BufferQueue::BufferQueue( bool allowSynchronousMode ) : - mDefaultWidth(1), - mDefaultHeight(1), - mPixelFormat(PIXEL_FORMAT_RGBA_8888), - mBufferCount(MIN_ASYNC_BUFFER_SLOTS), - mClientBufferCount(0), - mServerBufferCount(MIN_ASYNC_BUFFER_SLOTS), - mNextTransform(0), - mNextScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE), - mSynchronousMode(false), - mAllowSynchronousMode(allowSynchronousMode), - mConnectedApi(NO_CONNECTED_API), - mAbandoned(false), - mFrameCounter(0), - mBufferHasBeenQueued(false) -{ - // Choose a name using the PID and a process-unique ID. - mConsumerName = String8::format("unnamed-%d-%d", getpid(), createProcessUniqueId()); - - ST_LOGV("BufferQueue"); - sp<ISurfaceComposer> composer(ComposerService::getComposerService()); - mGraphicBufferAlloc = composer->createGraphicBufferAlloc(); - mNextCrop.makeInvalid(); -} - -BufferQueue::~BufferQueue() { - ST_LOGV("~BufferQueue"); -} - -status_t BufferQueue::setBufferCountServerLocked(int bufferCount) { - if (bufferCount > NUM_BUFFER_SLOTS) - return BAD_VALUE; - - // special-case, nothing to do - if (bufferCount == mBufferCount) - return OK; - - if (!mClientBufferCount && - bufferCount >= mBufferCount) { - // easy, we just have more buffers - mBufferCount = bufferCount; - mServerBufferCount = bufferCount; - mDequeueCondition.broadcast(); - } else { - // we're here because we're either - // - reducing the number of available buffers - // - or there is a client-buffer-count in effect - - // less than 2 buffers is never allowed - if (bufferCount < 2) - return BAD_VALUE; - - // when there is non client-buffer-count in effect, the client is not - // allowed to dequeue more than one buffer at a time, - // so the next time they dequeue a buffer, we know that they don't - // own one. the actual resizing will happen during the next - // dequeueBuffer. - - mServerBufferCount = bufferCount; - } - return OK; -} - -bool BufferQueue::isSynchronousMode() const { - Mutex::Autolock lock(mMutex); - return mSynchronousMode; -} - -void BufferQueue::setConsumerName(const String8& name) { - Mutex::Autolock lock(mMutex); - mConsumerName = name; -} - -void BufferQueue::setFrameAvailableListener( - const sp<FrameAvailableListener>& listener) { - ST_LOGV("setFrameAvailableListener"); - Mutex::Autolock lock(mMutex); - mFrameAvailableListener = listener; -} - -status_t BufferQueue::setBufferCount(int bufferCount) { - ST_LOGV("setBufferCount: count=%d", bufferCount); - Mutex::Autolock lock(mMutex); - - if (mAbandoned) { - ST_LOGE("setBufferCount: SurfaceTexture has been abandoned!"); - return NO_INIT; - } - if (bufferCount > NUM_BUFFER_SLOTS) { - ST_LOGE("setBufferCount: bufferCount larger than slots available"); - return BAD_VALUE; - } - - // Error out if the user has dequeued buffers - for (int i=0 ; i<mBufferCount ; i++) { - if (mSlots[i].mBufferState == BufferSlot::DEQUEUED) { - ST_LOGE("setBufferCount: client owns some buffers"); - return -EINVAL; - } - } - - const int minBufferSlots = mSynchronousMode ? - MIN_SYNC_BUFFER_SLOTS : MIN_ASYNC_BUFFER_SLOTS; - if (bufferCount == 0) { - mClientBufferCount = 0; - bufferCount = (mServerBufferCount >= minBufferSlots) ? - mServerBufferCount : minBufferSlots; - return setBufferCountServerLocked(bufferCount); - } - - if (bufferCount < minBufferSlots) { - ST_LOGE("setBufferCount: requested buffer count (%d) is less than " - "minimum (%d)", bufferCount, minBufferSlots); - return BAD_VALUE; - } - - // here we're guaranteed that the client doesn't have dequeued buffers - // and will release all of its buffer references. - freeAllBuffersLocked(); - mBufferCount = bufferCount; - mClientBufferCount = bufferCount; - mBufferHasBeenQueued = false; - mQueue.clear(); - mDequeueCondition.broadcast(); - return OK; -} - -int BufferQueue::query(int what, int* outValue) -{ - ATRACE_CALL(); - Mutex::Autolock lock(mMutex); - - if (mAbandoned) { - ST_LOGE("query: SurfaceTexture has been abandoned!"); - return NO_INIT; - } - - int value; - switch (what) { - case NATIVE_WINDOW_WIDTH: - value = mDefaultWidth; - break; - case NATIVE_WINDOW_HEIGHT: - value = mDefaultHeight; - break; - case NATIVE_WINDOW_FORMAT: - value = mPixelFormat; - break; - case NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS: - value = mSynchronousMode ? - (MIN_UNDEQUEUED_BUFFERS-1) : MIN_UNDEQUEUED_BUFFERS; - break; - default: - return BAD_VALUE; - } - outValue[0] = value; - return NO_ERROR; -} - -status_t BufferQueue::requestBuffer(int slot, sp<GraphicBuffer>* buf) { - ATRACE_CALL(); - ST_LOGV("requestBuffer: slot=%d", slot); - Mutex::Autolock lock(mMutex); - if (mAbandoned) { - ST_LOGE("requestBuffer: SurfaceTexture has been abandoned!"); - return NO_INIT; - } - if (slot < 0 || mBufferCount <= slot) { - ST_LOGE("requestBuffer: slot index out of range [0, %d]: %d", - mBufferCount, slot); - return BAD_VALUE; - } - mSlots[slot].mRequestBufferCalled = true; - *buf = mSlots[slot].mGraphicBuffer; - return NO_ERROR; -} - -status_t BufferQueue::dequeueBuffer(int *outBuf, uint32_t w, uint32_t h, - uint32_t format, uint32_t usage) { - ATRACE_CALL(); - ST_LOGV("dequeueBuffer: w=%d h=%d fmt=%#x usage=%#x", w, h, format, usage); - - if ((w && !h) || (!w && h)) { - ST_LOGE("dequeueBuffer: invalid size: w=%u, h=%u", w, h); - return BAD_VALUE; - } - - status_t returnFlags(OK); - EGLDisplay dpy = EGL_NO_DISPLAY; - EGLSyncKHR fence = EGL_NO_SYNC_KHR; - - { // Scope for the lock - Mutex::Autolock lock(mMutex); - - int found = -1; - int foundSync = -1; - int dequeuedCount = 0; - bool tryAgain = true; - while (tryAgain) { - if (mAbandoned) { - ST_LOGE("dequeueBuffer: SurfaceTexture has been abandoned!"); - return NO_INIT; - } - - // We need to wait for the FIFO to drain if the number of buffer - // needs to change. - // - // The condition "number of buffers needs to change" is true if - // - the client doesn't care about how many buffers there are - // - AND the actual number of buffer is different from what was - // set in the last setBufferCountServer() - // - OR - - // setBufferCountServer() was set to a value incompatible with - // the synchronization mode (for instance because the sync mode - // changed since) - // - // As long as this condition is true AND the FIFO is not empty, we - // wait on mDequeueCondition. - - const int minBufferCountNeeded = mSynchronousMode ? - MIN_SYNC_BUFFER_SLOTS : MIN_ASYNC_BUFFER_SLOTS; - - const bool numberOfBuffersNeedsToChange = !mClientBufferCount && - ((mServerBufferCount != mBufferCount) || - (mServerBufferCount < minBufferCountNeeded)); - - if (!mQueue.isEmpty() && numberOfBuffersNeedsToChange) { - // wait for the FIFO to drain - mDequeueCondition.wait(mMutex); - // NOTE: we continue here because we need to reevaluate our - // whole state (eg: we could be abandoned or disconnected) - continue; - } - - if (numberOfBuffersNeedsToChange) { - // here we're guaranteed that mQueue is empty - freeAllBuffersLocked(); - // XXX: signal? - mBufferCount = mServerBufferCount; - if (mBufferCount < minBufferCountNeeded) - mBufferCount = minBufferCountNeeded; - mBufferHasBeenQueued = false; - returnFlags |= ISurfaceTexture::RELEASE_ALL_BUFFERS; - } - - // look for a free buffer to give to the client - found = INVALID_BUFFER_SLOT; - foundSync = INVALID_BUFFER_SLOT; - dequeuedCount = 0; - for (int i = 0; i < mBufferCount; i++) { - const int state = mSlots[i].mBufferState; - if (state == BufferSlot::DEQUEUED) { - dequeuedCount++; - } - - // this logic used to be if (FLAG_ALLOW_DEQUEUE_CURRENT_BUFFER) - // but dequeuing the current buffer is disabled. - if (false) { - // This functionality has been temporarily removed so - // BufferQueue and SurfaceTexture can be refactored into - // separate objects - } else { - if (state == BufferSlot::FREE) { - /* We return the oldest of the free buffers to avoid - * stalling the producer if possible. This is because - * the consumer may still have pending reads of the - * buffers in flight. - */ - bool isOlder = mSlots[i].mFrameNumber < - mSlots[found].mFrameNumber; - if (found < 0 || isOlder) { - foundSync = i; - found = i; - } - } - } - } - - // clients are not allowed to dequeue more than one buffer - // if they didn't set a buffer count. - if (!mClientBufferCount && dequeuedCount) { - ST_LOGE("dequeueBuffer: can't dequeue multiple buffers without " - "setting the buffer count"); - return -EINVAL; - } - - // See whether a buffer has been queued since the last - // setBufferCount so we know whether to perform the - // MIN_UNDEQUEUED_BUFFERS check below. - if (mBufferHasBeenQueued) { - // make sure the client is not trying to dequeue more buffers - // than allowed. - const int avail = mBufferCount - (dequeuedCount+1); - if (avail < (MIN_UNDEQUEUED_BUFFERS-int(mSynchronousMode))) { - ST_LOGE("dequeueBuffer: MIN_UNDEQUEUED_BUFFERS=%d exceeded " - "(dequeued=%d)", - MIN_UNDEQUEUED_BUFFERS-int(mSynchronousMode), - dequeuedCount); - return -EBUSY; - } - } - - // if no buffer is found, wait for a buffer to be released - tryAgain = found == INVALID_BUFFER_SLOT; - if (tryAgain) { - mDequeueCondition.wait(mMutex); - } - } - - - if (found == INVALID_BUFFER_SLOT) { - // This should not happen. - ST_LOGE("dequeueBuffer: no available buffer slots"); - return -EBUSY; - } - - const int buf = found; - *outBuf = found; - - ATRACE_BUFFER_INDEX(buf); - - const bool useDefaultSize = !w && !h; - if (useDefaultSize) { - // use the default size - w = mDefaultWidth; - h = mDefaultHeight; - } - - const bool updateFormat = (format != 0); - if (!updateFormat) { - // keep the current (or default) format - format = mPixelFormat; - } - - // buffer is now in DEQUEUED (but can also be current at the same time, - // if we're in synchronous mode) - mSlots[buf].mBufferState = BufferSlot::DEQUEUED; - - const sp<GraphicBuffer>& buffer(mSlots[buf].mGraphicBuffer); - if ((buffer == NULL) || - (uint32_t(buffer->width) != w) || - (uint32_t(buffer->height) != h) || - (uint32_t(buffer->format) != format) || - ((uint32_t(buffer->usage) & usage) != usage)) - { - usage |= GraphicBuffer::USAGE_HW_TEXTURE; - status_t error; - sp<GraphicBuffer> graphicBuffer( - mGraphicBufferAlloc->createGraphicBuffer( - w, h, format, usage, &error)); - if (graphicBuffer == 0) { - ST_LOGE("dequeueBuffer: SurfaceComposer::createGraphicBuffer " - "failed"); - return error; - } - if (updateFormat) { - mPixelFormat = format; - } - - mSlots[buf].mAcquireCalled = false; - mSlots[buf].mGraphicBuffer = graphicBuffer; - mSlots[buf].mRequestBufferCalled = false; - mSlots[buf].mFence = EGL_NO_SYNC_KHR; - mSlots[buf].mEglDisplay = EGL_NO_DISPLAY; - - - - - returnFlags |= ISurfaceTexture::BUFFER_NEEDS_REALLOCATION; - } - - dpy = mSlots[buf].mEglDisplay; - fence = mSlots[buf].mFence; - mSlots[buf].mFence = EGL_NO_SYNC_KHR; - } // end lock scope - - if (fence != EGL_NO_SYNC_KHR) { - EGLint result = eglClientWaitSyncKHR(dpy, fence, 0, 1000000000); - // If something goes wrong, log the error, but return the buffer without - // synchronizing access to it. It's too late at this point to abort the - // dequeue operation. - if (result == EGL_FALSE) { - ALOGE("dequeueBuffer: error waiting for fence: %#x", eglGetError()); - } else if (result == EGL_TIMEOUT_EXPIRED_KHR) { - ALOGE("dequeueBuffer: timeout waiting for fence"); - } - eglDestroySyncKHR(dpy, fence); - - } - - ST_LOGV("dequeueBuffer: returning slot=%d buf=%p flags=%#x", *outBuf, - mSlots[*outBuf].mGraphicBuffer->handle, returnFlags); - - return returnFlags; -} - -status_t BufferQueue::setSynchronousMode(bool enabled) { - ATRACE_CALL(); - ST_LOGV("setSynchronousMode: enabled=%d", enabled); - Mutex::Autolock lock(mMutex); - - if (mAbandoned) { - ST_LOGE("setSynchronousMode: SurfaceTexture has been abandoned!"); - return NO_INIT; - } - - status_t err = OK; - if (!mAllowSynchronousMode && enabled) - return err; - - if (!enabled) { - // going to asynchronous mode, drain the queue - err = drainQueueLocked(); - if (err != NO_ERROR) - return err; - } - - if (mSynchronousMode != enabled) { - // - if we're going to asynchronous mode, the queue is guaranteed to be - // empty here - // - if the client set the number of buffers, we're guaranteed that - // we have at least 3 (because we don't allow less) - mSynchronousMode = enabled; - mDequeueCondition.broadcast(); - } - return err; -} - -status_t BufferQueue::queueBuffer(int buf, int64_t timestamp, - uint32_t* outWidth, uint32_t* outHeight, uint32_t* outTransform) { - ATRACE_CALL(); - ATRACE_BUFFER_INDEX(buf); - - ST_LOGV("queueBuffer: slot=%d time=%lld", buf, timestamp); - - sp<FrameAvailableListener> listener; - - { // scope for the lock - Mutex::Autolock lock(mMutex); - if (mAbandoned) { - ST_LOGE("queueBuffer: SurfaceTexture has been abandoned!"); - return NO_INIT; - } - if (buf < 0 || buf >= mBufferCount) { - ST_LOGE("queueBuffer: slot index out of range [0, %d]: %d", - mBufferCount, buf); - return -EINVAL; - } else if (mSlots[buf].mBufferState != BufferSlot::DEQUEUED) { - ST_LOGE("queueBuffer: slot %d is not owned by the client " - "(state=%d)", buf, mSlots[buf].mBufferState); - return -EINVAL; - } else if (!mSlots[buf].mRequestBufferCalled) { - ST_LOGE("queueBuffer: slot %d was enqueued without requesting a " - "buffer", buf); - return -EINVAL; - } - - if (mSynchronousMode) { - // In synchronous mode we queue all buffers in a FIFO. - mQueue.push_back(buf); - - // Synchronous mode always signals that an additional frame should - // be consumed. - listener = mFrameAvailableListener; - } else { - // In asynchronous mode we only keep the most recent buffer. - if (mQueue.empty()) { - mQueue.push_back(buf); - - // Asynchronous mode only signals that a frame should be - // consumed if no previous frame was pending. If a frame were - // pending then the consumer would have already been notified. - listener = mFrameAvailableListener; - } else { - Fifo::iterator front(mQueue.begin()); - // buffer currently queued is freed - mSlots[*front].mBufferState = BufferSlot::FREE; - // and we record the new buffer index in the queued list - *front = buf; - } - } - - mSlots[buf].mBufferState = BufferSlot::QUEUED; - mSlots[buf].mCrop = mNextCrop; - mSlots[buf].mTransform = mNextTransform; - mSlots[buf].mScalingMode = mNextScalingMode; - mSlots[buf].mTimestamp = timestamp; - mFrameCounter++; - mSlots[buf].mFrameNumber = mFrameCounter; - - mBufferHasBeenQueued = true; - mDequeueCondition.broadcast(); - - *outWidth = mDefaultWidth; - *outHeight = mDefaultHeight; - *outTransform = 0; - - ATRACE_INT(mConsumerName.string(), mQueue.size()); - } // scope for the lock - - // call back without lock held - if (listener != 0) { - listener->onFrameAvailable(); - } - return OK; -} - -void BufferQueue::cancelBuffer(int buf) { - ATRACE_CALL(); - ST_LOGV("cancelBuffer: slot=%d", buf); - Mutex::Autolock lock(mMutex); - - if (mAbandoned) { - ST_LOGW("cancelBuffer: BufferQueue has been abandoned!"); - return; - } - - if (buf < 0 || buf >= mBufferCount) { - ST_LOGE("cancelBuffer: slot index out of range [0, %d]: %d", - mBufferCount, buf); - return; - } else if (mSlots[buf].mBufferState != BufferSlot::DEQUEUED) { - ST_LOGE("cancelBuffer: slot %d is not owned by the client (state=%d)", - buf, mSlots[buf].mBufferState); - return; - } - mSlots[buf].mBufferState = BufferSlot::FREE; - mSlots[buf].mFrameNumber = 0; - mDequeueCondition.broadcast(); -} - -status_t BufferQueue::setCrop(const Rect& crop) { - ATRACE_CALL(); - ST_LOGV("setCrop: crop=[%d,%d,%d,%d]", crop.left, crop.top, crop.right, - crop.bottom); - - Mutex::Autolock lock(mMutex); - if (mAbandoned) { - ST_LOGE("setCrop: BufferQueue has been abandoned!"); - return NO_INIT; - } - mNextCrop = crop; - return OK; -} - -status_t BufferQueue::setTransform(uint32_t transform) { - ATRACE_CALL(); - ST_LOGV("setTransform: xform=%#x", transform); - Mutex::Autolock lock(mMutex); - if (mAbandoned) { - ST_LOGE("setTransform: BufferQueue has been abandoned!"); - return NO_INIT; - } - mNextTransform = transform; - return OK; -} - -status_t BufferQueue::setScalingMode(int mode) { - ATRACE_CALL(); - ST_LOGV("setScalingMode: mode=%d", mode); - - switch (mode) { - case NATIVE_WINDOW_SCALING_MODE_FREEZE: - case NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW: - break; - default: - ST_LOGE("unknown scaling mode: %d", mode); - return BAD_VALUE; - } - - Mutex::Autolock lock(mMutex); - mNextScalingMode = mode; - return OK; -} - -status_t BufferQueue::connect(int api, - uint32_t* outWidth, uint32_t* outHeight, uint32_t* outTransform) { - ATRACE_CALL(); - ST_LOGV("connect: api=%d", api); - Mutex::Autolock lock(mMutex); - - if (mAbandoned) { - ST_LOGE("connect: BufferQueue has been abandoned!"); - return NO_INIT; - } - - int err = NO_ERROR; - switch (api) { - case NATIVE_WINDOW_API_EGL: - case NATIVE_WINDOW_API_CPU: - case NATIVE_WINDOW_API_MEDIA: - case NATIVE_WINDOW_API_CAMERA: - if (mConnectedApi != NO_CONNECTED_API) { - ST_LOGE("connect: already connected (cur=%d, req=%d)", - mConnectedApi, api); - err = -EINVAL; - } else { - mConnectedApi = api; - *outWidth = mDefaultWidth; - *outHeight = mDefaultHeight; - *outTransform = 0; - } - break; - default: - err = -EINVAL; - break; - } - - mBufferHasBeenQueued = false; - - return err; -} - -status_t BufferQueue::disconnect(int api) { - ATRACE_CALL(); - ST_LOGV("disconnect: api=%d", api); - Mutex::Autolock lock(mMutex); - - if (mAbandoned) { - // it is not really an error to disconnect after the surface - // has been abandoned, it should just be a no-op. - return NO_ERROR; - } - - int err = NO_ERROR; - switch (api) { - case NATIVE_WINDOW_API_EGL: - case NATIVE_WINDOW_API_CPU: - case NATIVE_WINDOW_API_MEDIA: - case NATIVE_WINDOW_API_CAMERA: - if (mConnectedApi == api) { - drainQueueAndFreeBuffersLocked(); - mConnectedApi = NO_CONNECTED_API; - mNextCrop.makeInvalid(); - mNextScalingMode = NATIVE_WINDOW_SCALING_MODE_FREEZE; - mNextTransform = 0; - mDequeueCondition.broadcast(); - } else { - ST_LOGE("disconnect: connected to another api (cur=%d, req=%d)", - mConnectedApi, api); - err = -EINVAL; - } - break; - default: - ST_LOGE("disconnect: unknown API %d", api); - err = -EINVAL; - break; - } - return err; -} - -void BufferQueue::dump(String8& result) const -{ - char buffer[1024]; - BufferQueue::dump(result, "", buffer, 1024); -} - -void BufferQueue::dump(String8& result, const char* prefix, - char* buffer, size_t SIZE) const -{ - Mutex::Autolock _l(mMutex); - snprintf(buffer, SIZE, - "%snext : {crop=[%d,%d,%d,%d], transform=0x%02x}\n" - ,prefix, mNextCrop.left, mNextCrop.top, mNextCrop.right, - mNextCrop.bottom, mNextTransform - ); - result.append(buffer); - - String8 fifo; - int fifoSize = 0; - Fifo::const_iterator i(mQueue.begin()); - while (i != mQueue.end()) { - snprintf(buffer, SIZE, "%02d ", *i++); - fifoSize++; - fifo.append(buffer); - } - - snprintf(buffer, SIZE, - "%s-BufferQueue mBufferCount=%d, mSynchronousMode=%d, default-size=[%dx%d], " - "mPixelFormat=%d, FIFO(%d)={%s}\n", - prefix, mBufferCount, mSynchronousMode, mDefaultWidth, - mDefaultHeight, mPixelFormat, fifoSize, fifo.string()); - result.append(buffer); - - - struct { - const char * operator()(int state) const { - switch (state) { - case BufferSlot::DEQUEUED: return "DEQUEUED"; - case BufferSlot::QUEUED: return "QUEUED"; - case BufferSlot::FREE: return "FREE"; - case BufferSlot::ACQUIRED: return "ACQUIRED"; - default: return "Unknown"; - } - } - } stateName; - - for (int i=0 ; i<mBufferCount ; i++) { - const BufferSlot& slot(mSlots[i]); - snprintf(buffer, SIZE, - "%s%s[%02d] " - "state=%-8s, crop=[%d,%d,%d,%d], " - "transform=0x%02x, timestamp=%lld", - prefix, (slot.mBufferState == BufferSlot::ACQUIRED)?">":" ", i, - stateName(slot.mBufferState), - slot.mCrop.left, slot.mCrop.top, slot.mCrop.right, - slot.mCrop.bottom, slot.mTransform, slot.mTimestamp - ); - result.append(buffer); - - const sp<GraphicBuffer>& buf(slot.mGraphicBuffer); - if (buf != NULL) { - snprintf(buffer, SIZE, - ", %p [%4ux%4u:%4u,%3X]", - buf->handle, buf->width, buf->height, buf->stride, - buf->format); - result.append(buffer); - } - result.append("\n"); - } -} - -void BufferQueue::freeBufferLocked(int i) { - mSlots[i].mGraphicBuffer = 0; - mSlots[i].mBufferState = BufferSlot::FREE; - mSlots[i].mFrameNumber = 0; - mSlots[i].mAcquireCalled = false; - - // destroy fence as BufferQueue now takes ownership - if (mSlots[i].mFence != EGL_NO_SYNC_KHR) { - eglDestroySyncKHR(mSlots[i].mEglDisplay, mSlots[i].mFence); - mSlots[i].mFence = EGL_NO_SYNC_KHR; - } -} - -void BufferQueue::freeAllBuffersLocked() { - ALOGW_IF(!mQueue.isEmpty(), - "freeAllBuffersLocked called but mQueue is not empty"); - mQueue.clear(); - mBufferHasBeenQueued = false; - for (int i = 0; i < NUM_BUFFER_SLOTS; i++) { - freeBufferLocked(i); - } -} - -status_t BufferQueue::acquire(BufferItem *buffer) { - ATRACE_CALL(); - Mutex::Autolock _l(mMutex); - // check if queue is empty - // In asynchronous mode the list is guaranteed to be one buffer - // deep, while in synchronous mode we use the oldest buffer. - if (!mQueue.empty()) { - Fifo::iterator front(mQueue.begin()); - int buf = *front; - - ATRACE_BUFFER_INDEX(buf); - - if (mSlots[buf].mAcquireCalled) { - buffer->mGraphicBuffer = NULL; - } - else { - buffer->mGraphicBuffer = mSlots[buf].mGraphicBuffer; - } - buffer->mCrop = mSlots[buf].mCrop; - buffer->mTransform = mSlots[buf].mTransform; - buffer->mScalingMode = mSlots[buf].mScalingMode; - buffer->mFrameNumber = mSlots[buf].mFrameNumber; - buffer->mTimestamp = mSlots[buf].mTimestamp; - buffer->mBuf = buf; - mSlots[buf].mAcquireCalled = true; - - mSlots[buf].mBufferState = BufferSlot::ACQUIRED; - mQueue.erase(front); - mDequeueCondition.broadcast(); - - ATRACE_INT(mConsumerName.string(), mQueue.size()); - } - else { - return -EINVAL; //should be a better return code - } - - return OK; -} - -status_t BufferQueue::releaseBuffer(int buf, EGLDisplay display, - EGLSyncKHR fence) { - ATRACE_CALL(); - ATRACE_BUFFER_INDEX(buf); - - Mutex::Autolock _l(mMutex); - - if (buf == INVALID_BUFFER_SLOT) { - return -EINVAL; - } - - mSlots[buf].mEglDisplay = display; - mSlots[buf].mFence = fence; - - // The current buffer becomes FREE if it was still in the queued - // state. If it has already been given to the client - // (synchronous mode), then it stays in DEQUEUED state. - if (mSlots[buf].mBufferState == BufferSlot::QUEUED - || mSlots[buf].mBufferState == BufferSlot::ACQUIRED) { - mSlots[buf].mBufferState = BufferSlot::FREE; - } - - mDequeueCondition.broadcast(); - - return OK; -} - -status_t BufferQueue::consumerDisconnect() { - Mutex::Autolock lock(mMutex); - // Once the SurfaceTexture disconnects, the BufferQueue - // is considered abandoned - mAbandoned = true; - freeAllBuffersLocked(); - mDequeueCondition.broadcast(); - return OK; -} - -status_t BufferQueue::setDefaultBufferSize(uint32_t w, uint32_t h) -{ - ST_LOGV("setDefaultBufferSize: w=%d, h=%d", w, h); - if (!w || !h) { - ST_LOGE("setDefaultBufferSize: dimensions cannot be 0 (w=%d, h=%d)", - w, h); - return BAD_VALUE; - } - - Mutex::Autolock lock(mMutex); - mDefaultWidth = w; - mDefaultHeight = h; - return OK; -} - -status_t BufferQueue::setBufferCountServer(int bufferCount) { - ATRACE_CALL(); - Mutex::Autolock lock(mMutex); - return setBufferCountServerLocked(bufferCount); -} - -void BufferQueue::freeAllBuffersExceptHeadLocked() { - ALOGW_IF(!mQueue.isEmpty(), - "freeAllBuffersExceptCurrentLocked called but mQueue is not empty"); - int head = -1; - if (!mQueue.empty()) { - Fifo::iterator front(mQueue.begin()); - head = *front; - } - mBufferHasBeenQueued = false; - for (int i = 0; i < NUM_BUFFER_SLOTS; i++) { - if (i != head) { - freeBufferLocked(i); - } - } -} - -status_t BufferQueue::drainQueueLocked() { - while (mSynchronousMode && !mQueue.isEmpty()) { - mDequeueCondition.wait(mMutex); - if (mAbandoned) { - ST_LOGE("drainQueueLocked: BufferQueue has been abandoned!"); - return NO_INIT; - } - if (mConnectedApi == NO_CONNECTED_API) { - ST_LOGE("drainQueueLocked: BufferQueue is not connected!"); - return NO_INIT; - } - } - return NO_ERROR; -} - -status_t BufferQueue::drainQueueAndFreeBuffersLocked() { - status_t err = drainQueueLocked(); - if (err == NO_ERROR) { - if (mSynchronousMode) { - freeAllBuffersLocked(); - } else { - freeAllBuffersExceptHeadLocked(); - } - } - return err; -} - -}; // namespace android |