* commit 'dda4295221f831560ca9d554cd9b7be1c672d0b6': Remove experimental HWC virtual display support
This commit is contained in:
commit
c0db61966a
@ -14,7 +14,6 @@ LOCAL_SRC_FILES:= \
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SurfaceFlingerConsumer.cpp \
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SurfaceTextureLayer.cpp \
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Transform.cpp \
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DisplayHardware/BufferQueueInterposer.cpp \
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DisplayHardware/FramebufferSurface.cpp \
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DisplayHardware/HWComposer.cpp \
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DisplayHardware/PowerHAL.cpp \
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@ -1,226 +0,0 @@
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/*
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* Copyright 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#undef LOG_TAG
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#define LOG_TAG "BQInterposer"
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//#define LOG_NDEBUG 0
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#include "BufferQueueInterposer.h"
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// ---------------------------------------------------------------------------
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namespace android {
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// ---------------------------------------------------------------------------
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#define BQI_LOGV(x, ...) ALOGV("[%s] "x, mName.string(), ##__VA_ARGS__)
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#define BQI_LOGD(x, ...) ALOGD("[%s] "x, mName.string(), ##__VA_ARGS__)
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#define BQI_LOGI(x, ...) ALOGI("[%s] "x, mName.string(), ##__VA_ARGS__)
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#define BQI_LOGW(x, ...) ALOGW("[%s] "x, mName.string(), ##__VA_ARGS__)
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#define BQI_LOGE(x, ...) ALOGE("[%s] "x, mName.string(), ##__VA_ARGS__)
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// Get an ID that's unique within this process.
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static int32_t createProcessUniqueId() {
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static volatile int32_t globalCounter = 0;
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return android_atomic_inc(&globalCounter);
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}
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BufferQueueInterposer::BufferQueueInterposer(
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const sp<IGraphicBufferProducer>& sink, const String8& name)
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: mSink(sink),
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mName(name),
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mAcquired(false)
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{
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BQI_LOGV("BufferQueueInterposer sink=%p", sink.get());
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}
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BufferQueueInterposer::~BufferQueueInterposer() {
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Mutex::Autolock lock(mMutex);
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flushQueuedBuffersLocked();
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BQI_LOGV("~BufferQueueInterposer");
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}
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status_t BufferQueueInterposer::requestBuffer(int slot,
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sp<GraphicBuffer>* outBuf) {
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BQI_LOGV("requestBuffer slot=%d", slot);
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Mutex::Autolock lock(mMutex);
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if (size_t(slot) >= mBuffers.size()) {
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size_t size = mBuffers.size();
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mBuffers.insertAt(size, size - slot + 1);
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}
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sp<GraphicBuffer>& buf = mBuffers.editItemAt(slot);
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status_t result = mSink->requestBuffer(slot, &buf);
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*outBuf = buf;
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return result;
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}
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status_t BufferQueueInterposer::setBufferCount(int bufferCount) {
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BQI_LOGV("setBufferCount count=%d", bufferCount);
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Mutex::Autolock lock(mMutex);
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bufferCount += 1;
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status_t result = flushQueuedBuffersLocked();
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if (result != NO_ERROR)
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return result;
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result = mSink->setBufferCount(bufferCount);
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if (result != NO_ERROR)
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return result;
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for (size_t i = 0; i < mBuffers.size(); i++)
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mBuffers.editItemAt(i).clear();
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ssize_t n = mBuffers.resize(bufferCount);
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result = (n < 0) ? n : result;
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return result;
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}
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status_t BufferQueueInterposer::dequeueBuffer(int* slot, sp<Fence>* fence,
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uint32_t w, uint32_t h, uint32_t format, uint32_t usage) {
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BQI_LOGV("dequeueBuffer %ux%u fmt=%u usage=%#x", w, h, format, usage);
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return mSink->dequeueBuffer(slot, fence, w, h, format, usage);
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}
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status_t BufferQueueInterposer::queueBuffer(int slot,
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const QueueBufferInput& input, QueueBufferOutput* output) {
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BQI_LOGV("queueBuffer slot=%d", slot);
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Mutex::Autolock lock(mMutex);
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mQueue.push(QueuedBuffer(slot, input));
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*output = mQueueBufferOutput;
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return NO_ERROR;
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}
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void BufferQueueInterposer::cancelBuffer(int slot, const sp<Fence>& fence) {
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BQI_LOGV("cancelBuffer slot=%d", slot);
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mSink->cancelBuffer(slot, fence);
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}
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int BufferQueueInterposer::query(int what, int* value) {
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BQI_LOGV("query what=%d", what);
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return mSink->query(what, value);
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}
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status_t BufferQueueInterposer::setSynchronousMode(bool enabled) {
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BQI_LOGV("setSynchronousMode %s", enabled ? "true" : "false");
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return mSink->setSynchronousMode(enabled);
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}
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status_t BufferQueueInterposer::connect(int api, QueueBufferOutput* output) {
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BQI_LOGV("connect api=%d", api);
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Mutex::Autolock lock(mMutex);
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status_t result = mSink->connect(api, &mQueueBufferOutput);
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if (result == NO_ERROR) {
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*output = mQueueBufferOutput;
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}
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return result;
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}
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status_t BufferQueueInterposer::disconnect(int api) {
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BQI_LOGV("disconnect: api=%d", api);
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Mutex::Autolock lock(mMutex);
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flushQueuedBuffersLocked();
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return mSink->disconnect(api);
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}
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status_t BufferQueueInterposer::pullEmptyBuffer() {
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status_t result;
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int slot;
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sp<Fence> fence;
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result = dequeueBuffer(&slot, &fence, 0, 0, 0, 0);
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if (result == IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION) {
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sp<GraphicBuffer> buffer;
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result = requestBuffer(slot, &buffer);
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} else if (result != NO_ERROR) {
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return result;
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}
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uint32_t w, h, transformHint, numPendingBuffers;
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mQueueBufferOutput.deflate(&w, &h, &transformHint, &numPendingBuffers);
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IGraphicBufferProducer::QueueBufferInput qbi(0, Rect(w, h),
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NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, fence);
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IGraphicBufferProducer::QueueBufferOutput qbo;
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result = queueBuffer(slot, qbi, &qbo);
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if (result != NO_ERROR)
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return result;
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return NO_ERROR;
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}
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status_t BufferQueueInterposer::acquireBuffer(sp<GraphicBuffer>* buf,
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sp<Fence>* fence) {
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Mutex::Autolock lock(mMutex);
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if (mQueue.empty()) {
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BQI_LOGV("acquireBuffer: no buffers available");
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return NO_BUFFER_AVAILABLE;
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}
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if (mAcquired) {
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BQI_LOGE("acquireBuffer: buffer already acquired");
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return BUFFER_ALREADY_ACQUIRED;
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}
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BQI_LOGV("acquireBuffer: acquiring slot %d", mQueue[0].slot);
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*buf = mBuffers[mQueue[0].slot];
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*fence = mQueue[0].fence;
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mAcquired = true;
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return NO_ERROR;
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}
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status_t BufferQueueInterposer::releaseBuffer(const sp<Fence>& fence) {
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Mutex::Autolock lock(mMutex);
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if (!mAcquired) {
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BQI_LOGE("releaseBuffer: releasing a non-acquired buffer");
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return BUFFER_NOT_ACQUIRED;
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}
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BQI_LOGV("releaseBuffer: releasing slot %d to sink", mQueue[0].slot);
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const QueuedBuffer& b = mQueue[0];
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status_t result = mSink->queueBuffer(b.slot,
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QueueBufferInput(b.timestamp, b.crop, b.scalingMode,
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b.transform, b.fence),
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&mQueueBufferOutput);
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mQueue.removeAt(0);
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mAcquired = false;
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return result;
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}
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status_t BufferQueueInterposer::flushQueuedBuffersLocked() {
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if (mAcquired) {
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BQI_LOGE("flushQueuedBuffersLocked: buffer acquired, can't flush");
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return INVALID_OPERATION;
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}
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status_t result = NO_ERROR;
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for (size_t i = 0; i < mQueue.size(); i++) {
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const QueuedBuffer& b = mQueue[i];
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BQI_LOGV("flushing queued slot %d to sink", b.slot);
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status_t err = mSink->queueBuffer(b.slot,
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QueueBufferInput(b.timestamp, b.crop, b.scalingMode,
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b.transform, b.fence),
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&mQueueBufferOutput);
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if (err != NO_ERROR && result == NO_ERROR) // latch first error
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result = err;
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}
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mQueue.clear();
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return result;
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}
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// ---------------------------------------------------------------------------
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} // namespace android
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// ---------------------------------------------------------------------------
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@ -1,152 +0,0 @@
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/*
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* Copyright 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_SF_BUFFERQUEUEINTERPOSER_H
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#define ANDROID_SF_BUFFERQUEUEINTERPOSER_H
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#include <gui/IGraphicBufferProducer.h>
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#include <utils/Mutex.h>
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#include <utils/Vector.h>
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// ---------------------------------------------------------------------------
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namespace android {
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// ---------------------------------------------------------------------------
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// BufferQueueInterposers introduce an extra stage between a buffer producer
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// (the source) and a buffer consumer (the sink), which communicate via the
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// IGraphicBufferProducer interface. It is designed to be as transparent as
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// possible to both endpoints, so that they can work the same whether an
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// interposer is present or not.
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//
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// When the interpose is present, the source queues buffers to the
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// IGraphicBufferProducer implemented by BufferQueueInterposer. A client of
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// the BufferQueueInterposer can acquire each buffer in turn and read or
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// modify it, releasing the buffer when finished. When the buffer is released,
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// the BufferQueueInterposer queues it to the original IGraphicBufferProducer
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// interface representing the sink.
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//
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// A BufferQueueInterposer can be used to do additional rendering to a buffer
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// before it is consumed -- essentially pipelining two producers. As an
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// example, SurfaceFlinger uses this to implement mixed GLES and HWC
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// compositing to the same buffer for virtual displays. If it used two separate
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// buffer queues, then in GLES-only or mixed GLES+HWC compositing, the HWC
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// would have to copy the GLES output buffer to the HWC output buffer, using
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// more bandwidth than having HWC do additional composition "in place" on the
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// GLES output buffer.
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//
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// The goal for this class is to be usable in a variety of situations and be
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// part of libgui. But both the interface and implementation need some
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// iteration before then, so for now it should only be used by
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// VirtualDisplaySurface, which is why it's currently in SurfaceFlinger.
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//
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// Some of the problems that still need to be solved are:
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//
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// - Refactor the interposer interface along with BufferQueue and ConsumerBase,
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// so that there is a common interface for the consumer end of a queue. The
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// existing interfaces have some problems when the implementation isn't the
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// final consumer.
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//
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// - The client of the interposer may need one or more buffers in addition to
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// those used by the source and sink. IGraphicBufferProducer will probably
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// need to change to allow the producer to specify how many buffers it needs
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// to dequeue at a time, and then the interposer can add its requirements to
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// those of the source.
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//
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// - Abandoning, disconnecting, and connecting need to pass through somehow.
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// There needs to be a way to tell the interposer client to release its
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// buffer immediately so it can be queued/released, e.g. when the source
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// calls disconnect().
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//
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// - Right now the source->BQI queue is synchronous even if the BQI->sink queue
|
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// is asynchronous. Need to figure out how asynchronous should behave and
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// implement that.
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class BufferQueueInterposer : public BnGraphicBufferProducer {
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public:
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BufferQueueInterposer(const sp<IGraphicBufferProducer>& sink,
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const String8& name);
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//
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// IGraphicBufferProducer interface
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//
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virtual status_t requestBuffer(int slot, sp<GraphicBuffer>* outBuf);
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virtual status_t setBufferCount(int bufferCount);
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virtual status_t dequeueBuffer(int* slot, sp<Fence>* fence,
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uint32_t w, uint32_t h, uint32_t format, uint32_t usage);
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virtual status_t queueBuffer(int slot,
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const QueueBufferInput& input, QueueBufferOutput* output);
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virtual void cancelBuffer(int slot, const sp<Fence>& fence);
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virtual int query(int what, int* value);
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virtual status_t setSynchronousMode(bool enabled);
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virtual status_t connect(int api, QueueBufferOutput* output);
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virtual status_t disconnect(int api);
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//
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// Interposer interface
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//
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enum {
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NO_BUFFER_AVAILABLE = 2, // matches BufferQueue
|
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BUFFER_NOT_ACQUIRED,
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BUFFER_ALREADY_ACQUIRED,
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};
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||||
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// Acquire the oldest queued buffer. If no buffers are pending, returns
|
||||
// NO_BUFFER_AVAILABLE. If a buffer is currently acquired, returns
|
||||
// BUFFER_ALREADY_ACQUIRED.
|
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status_t acquireBuffer(sp<GraphicBuffer>* buf, sp<Fence>* fence);
|
||||
|
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// Release the currently acquired buffer, queueing it to the sink. If the
|
||||
// current buffer hasn't been acquired, returns BUFFER_NOT_ACQUIRED.
|
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status_t releaseBuffer(const sp<Fence>& fence);
|
||||
|
||||
// pullEmptyBuffer dequeues a buffer from the sink, then immediately
|
||||
// queues it to the interposer. This makes a buffer available for the
|
||||
// client to acquire even if the source hasn't queued one.
|
||||
status_t pullEmptyBuffer();
|
||||
|
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private:
|
||||
struct QueuedBuffer {
|
||||
QueuedBuffer(): slot(-1) {}
|
||||
QueuedBuffer(int slot, const QueueBufferInput& qbi): slot(slot) {
|
||||
qbi.deflate(×tamp, &crop, &scalingMode, &transform, &fence);
|
||||
}
|
||||
int slot;
|
||||
int64_t timestamp;
|
||||
Rect crop;
|
||||
int scalingMode;
|
||||
uint32_t transform;
|
||||
sp<Fence> fence;
|
||||
};
|
||||
|
||||
virtual ~BufferQueueInterposer();
|
||||
status_t flushQueuedBuffersLocked();
|
||||
|
||||
const sp<IGraphicBufferProducer> mSink;
|
||||
String8 mName;
|
||||
|
||||
Mutex mMutex;
|
||||
Vector<sp<GraphicBuffer> > mBuffers;
|
||||
Vector<QueuedBuffer> mQueue;
|
||||
bool mAcquired;
|
||||
QueueBufferOutput mQueueBufferOutput;
|
||||
};
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
} // namespace android
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
#endif // ANDROID_SF_BUFFERQUEUEINTERPOSER_H
|
@ -50,6 +50,10 @@
|
||||
|
||||
namespace android {
|
||||
|
||||
// This is not a real HWC version. It's used for in-development features that
|
||||
// haven't been committed to a specific real HWC version.
|
||||
#define HWC_DEVICE_API_VERSION_1_EXP HARDWARE_DEVICE_API_VERSION_2(1, 0xFF, HWC_HEADER_VERSION)
|
||||
|
||||
#define MIN_HWC_HEADER_VERSION HWC_HEADER_VERSION
|
||||
|
||||
#define NUM_PHYSICAL_DISPLAYS HWC_NUM_DISPLAY_TYPES
|
||||
@ -152,8 +156,8 @@ HWComposer::HWComposer(
|
||||
|
||||
// the number of displays we actually have depends on the
|
||||
// hw composer version
|
||||
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_2)) {
|
||||
// 1.2 adds support for virtual displays
|
||||
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_EXP)) {
|
||||
// 1.?? adds support for virtual displays
|
||||
mNumDisplays = MAX_DISPLAYS;
|
||||
} else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
|
||||
// 1.1 adds support for multiple displays
|
||||
@ -578,7 +582,7 @@ status_t HWComposer::prepare() {
|
||||
}
|
||||
mLists[i] = disp.list;
|
||||
if (mLists[i]) {
|
||||
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_2)) {
|
||||
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_EXP)) {
|
||||
mLists[i]->outbuf = NULL;
|
||||
mLists[i]->outbufAcquireFenceFd = -1;
|
||||
} else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
|
||||
|
@ -15,7 +15,9 @@
|
||||
*/
|
||||
|
||||
#include "VirtualDisplaySurface.h"
|
||||
#include "HWComposer.h"
|
||||
|
||||
#include <cutils/log.h>
|
||||
#include <gui/IGraphicBufferProducer.h>
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
namespace android {
|
||||
@ -23,28 +25,16 @@ namespace android {
|
||||
|
||||
VirtualDisplaySurface::VirtualDisplaySurface(HWComposer& hwc, int32_t dispId,
|
||||
const sp<IGraphicBufferProducer>& sink, const String8& name)
|
||||
: mHwc(hwc),
|
||||
mDisplayId(dispId),
|
||||
mName(name)
|
||||
: mSink(sink)
|
||||
{
|
||||
if (mDisplayId >= 0) {
|
||||
mInterposer = new BufferQueueInterposer(sink, name);
|
||||
mSourceProducer = mInterposer;
|
||||
} else {
|
||||
mSourceProducer = sink;
|
||||
}
|
||||
LOG_ALWAYS_FATAL_IF(dispId >= 0);
|
||||
}
|
||||
|
||||
VirtualDisplaySurface::~VirtualDisplaySurface() {
|
||||
if (mAcquiredBuffer != NULL) {
|
||||
status_t result = mInterposer->releaseBuffer(Fence::NO_FENCE);
|
||||
ALOGE_IF(result != NO_ERROR, "VirtualDisplaySurface \"%s\": "
|
||||
"failed to release buffer: %d", mName.string(), result);
|
||||
}
|
||||
}
|
||||
|
||||
sp<IGraphicBufferProducer> VirtualDisplaySurface::getIGraphicBufferProducer() const {
|
||||
return mSourceProducer;
|
||||
return mSink;
|
||||
}
|
||||
|
||||
status_t VirtualDisplaySurface::compositionComplete() {
|
||||
@ -52,60 +42,10 @@ status_t VirtualDisplaySurface::compositionComplete() {
|
||||
}
|
||||
|
||||
status_t VirtualDisplaySurface::advanceFrame() {
|
||||
if (mInterposer == NULL)
|
||||
return NO_ERROR;
|
||||
|
||||
Mutex::Autolock lock(mMutex);
|
||||
status_t result = NO_ERROR;
|
||||
|
||||
if (mAcquiredBuffer != NULL) {
|
||||
ALOGE("VirtualDisplaySurface \"%s\": "
|
||||
"advanceFrame called twice without onFrameCommitted",
|
||||
mName.string());
|
||||
return INVALID_OPERATION;
|
||||
}
|
||||
|
||||
sp<Fence> fence;
|
||||
result = mInterposer->acquireBuffer(&mAcquiredBuffer, &fence);
|
||||
if (result == BufferQueueInterposer::NO_BUFFER_AVAILABLE) {
|
||||
result = mInterposer->pullEmptyBuffer();
|
||||
if (result != NO_ERROR)
|
||||
return result;
|
||||
result = mInterposer->acquireBuffer(&mAcquiredBuffer, &fence);
|
||||
}
|
||||
if (result != NO_ERROR)
|
||||
return result;
|
||||
|
||||
result = mHwc.fbPost(mDisplayId, fence, mAcquiredBuffer);
|
||||
if (result == NO_ERROR) {
|
||||
result = mHwc.setOutputBuffer(mDisplayId, fence, mAcquiredBuffer);
|
||||
}
|
||||
return result;
|
||||
return NO_ERROR;
|
||||
}
|
||||
|
||||
void VirtualDisplaySurface::onFrameCommitted() {
|
||||
if (mInterposer == NULL)
|
||||
return;
|
||||
|
||||
Mutex::Autolock lock(mMutex);
|
||||
if (mAcquiredBuffer != NULL) {
|
||||
// fbFence signals when reads from the framebuffer are finished
|
||||
// outFence signals when writes to the output buffer are finished
|
||||
// It's unlikely that there will be an implementation where fbFence
|
||||
// signals after outFence (in fact they'll typically be the same
|
||||
// sync_pt), but just to be pedantic we merge them so the sink will
|
||||
// be sure to wait until both are complete.
|
||||
sp<Fence> fbFence = mHwc.getAndResetReleaseFence(mDisplayId);
|
||||
sp<Fence> outFence = mHwc.getLastRetireFence(mDisplayId);
|
||||
sp<Fence> fence = Fence::merge(
|
||||
String8::format("HWC done: %.21s", mName.string()),
|
||||
fbFence, outFence);
|
||||
|
||||
status_t result = mInterposer->releaseBuffer(fence);
|
||||
ALOGE_IF(result != NO_ERROR, "VirtualDisplaySurface \"%s\": "
|
||||
"failed to release buffer: %d", mName.string(), result);
|
||||
mAcquiredBuffer.clear();
|
||||
}
|
||||
}
|
||||
|
||||
void VirtualDisplaySurface::dump(String8& result) const {
|
||||
|
@ -17,7 +17,6 @@
|
||||
#ifndef ANDROID_SF_VIRTUAL_DISPLAY_SURFACE_H
|
||||
#define ANDROID_SF_VIRTUAL_DISPLAY_SURFACE_H
|
||||
|
||||
#include "BufferQueueInterposer.h"
|
||||
#include "DisplaySurface.h"
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
@ -26,33 +25,8 @@ namespace android {
|
||||
|
||||
class HWComposer;
|
||||
|
||||
/* This DisplaySurface implementation uses a BufferQueueInterposer to pass
|
||||
* partially- or fully-composited buffers from the OpenGL ES driver to
|
||||
* HWComposer to use as the output buffer for virtual displays. Allowing HWC
|
||||
* to compose into the same buffer that contains GLES results saves bandwidth
|
||||
* compared to having two separate BufferQueues for frames with at least some
|
||||
* GLES composition.
|
||||
*
|
||||
* The alternative would be to have two complete BufferQueues, one from GLES
|
||||
* to HWC and one from HWC to the virtual display sink (e.g. video encoder).
|
||||
* For GLES-only frames, the same bandwidth saving could be achieved if buffers
|
||||
* could be acquired from the GLES->HWC queue and inserted into the HWC->sink
|
||||
* queue. That would be complicated and doesn't help the mixed GLES+HWC case.
|
||||
*
|
||||
* On frames with no GLES composition, the VirtualDisplaySurface dequeues a
|
||||
* buffer directly from the sink IGraphicBufferProducer and passes it to HWC,
|
||||
* bypassing the GLES driver. This is only guaranteed to work if
|
||||
* eglSwapBuffers doesn't immediately dequeue a buffer for the next frame,
|
||||
* since we can't rely on being able to dequeue more than one buffer at a time.
|
||||
*
|
||||
* This class also has a passthrough mode, where it doesn't use a
|
||||
* BufferQueueInterposer and never sends buffers to HWC. Instead, OpenGL ES
|
||||
* output buffers are queued directly to the virtual display sink; this class
|
||||
* is inactive after construction. This mode is used when the HWC doesn't
|
||||
* support compositing for virtual displays.
|
||||
*
|
||||
* TODO(jessehall): Add a libgui test that ensures that EGL/GLES do lazy
|
||||
* dequeBuffers; we've wanted to require that for other reasons anyway.
|
||||
/* This DisplaySurface implementation is a stub used for developing HWC
|
||||
* virtual display support. It is currently just a passthrough.
|
||||
*/
|
||||
class VirtualDisplaySurface : public DisplaySurface {
|
||||
public:
|
||||
@ -70,19 +44,7 @@ public:
|
||||
private:
|
||||
virtual ~VirtualDisplaySurface();
|
||||
|
||||
// immutable after construction
|
||||
HWComposer& mHwc;
|
||||
int32_t mDisplayId;
|
||||
String8 mName;
|
||||
|
||||
// with HWC support, both of these point to the same object.
|
||||
// otherwise, mInterposer is NULL and mSourceProducer is the sink.
|
||||
sp<BufferQueueInterposer> mInterposer;
|
||||
sp<IGraphicBufferProducer> mSourceProducer;
|
||||
|
||||
// mutable, must be synchronized with mMutex
|
||||
Mutex mMutex;
|
||||
sp<GraphicBuffer> mAcquiredBuffer;
|
||||
sp<IGraphicBufferProducer> mSink;
|
||||
};
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
|
Loading…
Reference in New Issue
Block a user