554 lines
21 KiB
C++
554 lines
21 KiB
C++
/*
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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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// #define LOG_NDEBUG 0
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#include "VirtualDisplaySurface.h"
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#include "HWComposer.h"
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// ---------------------------------------------------------------------------
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namespace android {
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// ---------------------------------------------------------------------------
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#if defined(FORCE_HWC_COPY_FOR_VIRTUAL_DISPLAYS)
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static const bool sForceHwcCopy = true;
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#else
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static const bool sForceHwcCopy = false;
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#endif
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#define VDS_LOGE(msg, ...) ALOGE("[%s] "msg, \
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mDisplayName.string(), ##__VA_ARGS__)
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#define VDS_LOGW_IF(cond, msg, ...) ALOGW_IF(cond, "[%s] "msg, \
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mDisplayName.string(), ##__VA_ARGS__)
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#define VDS_LOGV(msg, ...) ALOGV("[%s] "msg, \
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mDisplayName.string(), ##__VA_ARGS__)
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static const char* dbgCompositionTypeStr(DisplaySurface::CompositionType type) {
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switch (type) {
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case DisplaySurface::COMPOSITION_UNKNOWN: return "UNKNOWN";
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case DisplaySurface::COMPOSITION_GLES: return "GLES";
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case DisplaySurface::COMPOSITION_HWC: return "HWC";
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case DisplaySurface::COMPOSITION_MIXED: return "MIXED";
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default: return "<INVALID>";
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}
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}
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VirtualDisplaySurface::VirtualDisplaySurface(HWComposer& hwc, int32_t dispId,
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const sp<IGraphicBufferProducer>& sink,
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const sp<BufferQueue>& bq,
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const String8& name)
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: ConsumerBase(bq),
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mHwc(hwc),
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mDisplayId(dispId),
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mDisplayName(name),
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mOutputUsage(GRALLOC_USAGE_HW_COMPOSER),
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mProducerSlotSource(0),
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mDbgState(DBG_STATE_IDLE),
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mDbgLastCompositionType(COMPOSITION_UNKNOWN),
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mMustRecompose(false)
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{
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mSource[SOURCE_SINK] = sink;
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mSource[SOURCE_SCRATCH] = bq;
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resetPerFrameState();
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int sinkWidth, sinkHeight;
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sink->query(NATIVE_WINDOW_WIDTH, &sinkWidth);
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sink->query(NATIVE_WINDOW_HEIGHT, &sinkHeight);
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// Pick the buffer format to request from the sink when not rendering to it
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// with GLES. If the consumer needs CPU access, use the default format
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// set by the consumer. Otherwise allow gralloc to decide the format based
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// on usage bits.
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int sinkUsage;
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sink->query(NATIVE_WINDOW_CONSUMER_USAGE_BITS, &sinkUsage);
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if (sinkUsage & (GRALLOC_USAGE_SW_READ_MASK | GRALLOC_USAGE_SW_WRITE_MASK)) {
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int sinkFormat;
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sink->query(NATIVE_WINDOW_FORMAT, &sinkFormat);
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mDefaultOutputFormat = sinkFormat;
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} else {
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mDefaultOutputFormat = HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED;
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}
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mOutputFormat = mDefaultOutputFormat;
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ConsumerBase::mName = String8::format("VDS: %s", mDisplayName.string());
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mConsumer->setConsumerName(ConsumerBase::mName);
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mConsumer->setConsumerUsageBits(GRALLOC_USAGE_HW_COMPOSER);
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mConsumer->setDefaultBufferSize(sinkWidth, sinkHeight);
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mConsumer->setDefaultMaxBufferCount(2);
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}
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VirtualDisplaySurface::~VirtualDisplaySurface() {
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}
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status_t VirtualDisplaySurface::beginFrame(bool mustRecompose) {
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if (mDisplayId < 0)
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return NO_ERROR;
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mMustRecompose = mustRecompose;
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VDS_LOGW_IF(mDbgState != DBG_STATE_IDLE,
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"Unexpected beginFrame() in %s state", dbgStateStr());
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mDbgState = DBG_STATE_BEGUN;
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uint32_t transformHint, numPendingBuffers;
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mQueueBufferOutput.deflate(&mSinkBufferWidth, &mSinkBufferHeight,
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&transformHint, &numPendingBuffers);
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return refreshOutputBuffer();
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}
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status_t VirtualDisplaySurface::prepareFrame(CompositionType compositionType) {
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if (mDisplayId < 0)
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return NO_ERROR;
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VDS_LOGW_IF(mDbgState != DBG_STATE_BEGUN,
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"Unexpected prepareFrame() in %s state", dbgStateStr());
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mDbgState = DBG_STATE_PREPARED;
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mCompositionType = compositionType;
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if (sForceHwcCopy && mCompositionType == COMPOSITION_GLES) {
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// Some hardware can do RGB->YUV conversion more efficiently in hardware
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// controlled by HWC than in hardware controlled by the video encoder.
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// Forcing GLES-composed frames to go through an extra copy by the HWC
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// allows the format conversion to happen there, rather than passing RGB
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// directly to the consumer.
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//
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// On the other hand, when the consumer prefers RGB or can consume RGB
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// inexpensively, this forces an unnecessary copy.
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mCompositionType = COMPOSITION_MIXED;
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}
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if (mCompositionType != mDbgLastCompositionType) {
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VDS_LOGV("prepareFrame: composition type changed to %s",
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dbgCompositionTypeStr(mCompositionType));
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mDbgLastCompositionType = mCompositionType;
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}
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if (mCompositionType != COMPOSITION_GLES &&
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(mOutputFormat != mDefaultOutputFormat ||
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mOutputUsage != GRALLOC_USAGE_HW_COMPOSER)) {
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// We must have just switched from GLES-only to MIXED or HWC
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// composition. Stop using the format and usage requested by the GLES
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// driver; they may be suboptimal when HWC is writing to the output
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// buffer. For example, if the output is going to a video encoder, and
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// HWC can write directly to YUV, some hardware can skip a
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// memory-to-memory RGB-to-YUV conversion step.
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//
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// If we just switched *to* GLES-only mode, we'll change the
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// format/usage and get a new buffer when the GLES driver calls
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// dequeueBuffer().
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mOutputFormat = mDefaultOutputFormat;
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mOutputUsage = GRALLOC_USAGE_HW_COMPOSER;
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refreshOutputBuffer();
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}
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return NO_ERROR;
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}
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status_t VirtualDisplaySurface::compositionComplete() {
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return NO_ERROR;
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}
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status_t VirtualDisplaySurface::advanceFrame() {
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if (mDisplayId < 0)
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return NO_ERROR;
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if (mCompositionType == COMPOSITION_HWC) {
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VDS_LOGW_IF(mDbgState != DBG_STATE_PREPARED,
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"Unexpected advanceFrame() in %s state on HWC frame",
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dbgStateStr());
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} else {
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VDS_LOGW_IF(mDbgState != DBG_STATE_GLES_DONE,
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"Unexpected advanceFrame() in %s state on GLES/MIXED frame",
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dbgStateStr());
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}
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mDbgState = DBG_STATE_HWC;
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if (mOutputProducerSlot < 0 ||
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(mCompositionType != COMPOSITION_HWC && mFbProducerSlot < 0)) {
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// Last chance bailout if something bad happened earlier. For example,
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// in a GLES configuration, if the sink disappears then dequeueBuffer
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// will fail, the GLES driver won't queue a buffer, but SurfaceFlinger
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// will soldier on. So we end up here without a buffer. There should
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// be lots of scary messages in the log just before this.
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VDS_LOGE("advanceFrame: no buffer, bailing out");
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return NO_MEMORY;
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}
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sp<GraphicBuffer> fbBuffer = mFbProducerSlot >= 0 ?
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mProducerBuffers[mFbProducerSlot] : sp<GraphicBuffer>(NULL);
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sp<GraphicBuffer> outBuffer = mProducerBuffers[mOutputProducerSlot];
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VDS_LOGV("advanceFrame: fb=%d(%p) out=%d(%p)",
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mFbProducerSlot, fbBuffer.get(),
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mOutputProducerSlot, outBuffer.get());
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// At this point we know the output buffer acquire fence,
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// so update HWC state with it.
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mHwc.setOutputBuffer(mDisplayId, mOutputFence, outBuffer);
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status_t result = NO_ERROR;
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if (fbBuffer != NULL) {
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result = mHwc.fbPost(mDisplayId, mFbFence, fbBuffer);
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}
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return result;
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}
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void VirtualDisplaySurface::onFrameCommitted() {
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if (mDisplayId < 0)
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return;
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VDS_LOGW_IF(mDbgState != DBG_STATE_HWC,
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"Unexpected onFrameCommitted() in %s state", dbgStateStr());
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mDbgState = DBG_STATE_IDLE;
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sp<Fence> fbFence = mHwc.getAndResetReleaseFence(mDisplayId);
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if (mCompositionType == COMPOSITION_MIXED && mFbProducerSlot >= 0) {
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// release the scratch buffer back to the pool
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Mutex::Autolock lock(mMutex);
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int sslot = mapProducer2SourceSlot(SOURCE_SCRATCH, mFbProducerSlot);
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VDS_LOGV("onFrameCommitted: release scratch sslot=%d", sslot);
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addReleaseFenceLocked(sslot, mProducerBuffers[mFbProducerSlot], fbFence);
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releaseBufferLocked(sslot, mProducerBuffers[mFbProducerSlot],
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EGL_NO_DISPLAY, EGL_NO_SYNC_KHR);
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}
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if (mOutputProducerSlot >= 0) {
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int sslot = mapProducer2SourceSlot(SOURCE_SINK, mOutputProducerSlot);
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QueueBufferOutput qbo;
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sp<Fence> outFence = mHwc.getLastRetireFence(mDisplayId);
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VDS_LOGV("onFrameCommitted: queue sink sslot=%d", sslot);
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if (mMustRecompose) {
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status_t result = mSource[SOURCE_SINK]->queueBuffer(sslot,
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QueueBufferInput(
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systemTime(), false /* isAutoTimestamp */,
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Rect(mSinkBufferWidth, mSinkBufferHeight),
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NATIVE_WINDOW_SCALING_MODE_FREEZE, 0 /* transform */,
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true /* async*/,
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outFence),
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&qbo);
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if (result == NO_ERROR) {
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updateQueueBufferOutput(qbo);
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}
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} else {
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// If the surface hadn't actually been updated, then we only went
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// through the motions of updating the display to keep our state
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// machine happy. We cancel the buffer to avoid triggering another
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// re-composition and causing an infinite loop.
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mSource[SOURCE_SINK]->cancelBuffer(sslot, outFence);
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}
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}
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resetPerFrameState();
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}
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void VirtualDisplaySurface::dump(String8& result) const {
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}
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status_t VirtualDisplaySurface::requestBuffer(int pslot,
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sp<GraphicBuffer>* outBuf) {
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VDS_LOGW_IF(mDbgState != DBG_STATE_GLES,
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"Unexpected requestBuffer pslot=%d in %s state",
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pslot, dbgStateStr());
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*outBuf = mProducerBuffers[pslot];
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return NO_ERROR;
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}
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status_t VirtualDisplaySurface::setBufferCount(int bufferCount) {
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return mSource[SOURCE_SINK]->setBufferCount(bufferCount);
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}
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status_t VirtualDisplaySurface::dequeueBuffer(Source source,
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uint32_t format, uint32_t usage, int* sslot, sp<Fence>* fence) {
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// Don't let a slow consumer block us
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bool async = (source == SOURCE_SINK);
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status_t result = mSource[source]->dequeueBuffer(sslot, fence, async,
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mSinkBufferWidth, mSinkBufferHeight, format, usage);
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if (result < 0)
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return result;
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int pslot = mapSource2ProducerSlot(source, *sslot);
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VDS_LOGV("dequeueBuffer(%s): sslot=%d pslot=%d result=%d",
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dbgSourceStr(source), *sslot, pslot, result);
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uint32_t sourceBit = static_cast<uint32_t>(source) << pslot;
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if ((mProducerSlotSource & (1u << pslot)) != sourceBit) {
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// This slot was previously dequeued from the other source; must
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// re-request the buffer.
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result |= BUFFER_NEEDS_REALLOCATION;
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mProducerSlotSource &= ~(1u << pslot);
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mProducerSlotSource |= sourceBit;
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}
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if (result & RELEASE_ALL_BUFFERS) {
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for (uint32_t i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
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if ((mProducerSlotSource & (1u << i)) == sourceBit)
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mProducerBuffers[i].clear();
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}
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}
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if (result & BUFFER_NEEDS_REALLOCATION) {
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mSource[source]->requestBuffer(*sslot, &mProducerBuffers[pslot]);
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VDS_LOGV("dequeueBuffer(%s): buffers[%d]=%p fmt=%d usage=%#x",
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dbgSourceStr(source), pslot, mProducerBuffers[pslot].get(),
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mProducerBuffers[pslot]->getPixelFormat(),
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mProducerBuffers[pslot]->getUsage());
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}
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return result;
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}
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status_t VirtualDisplaySurface::dequeueBuffer(int* pslot, sp<Fence>* fence, bool async,
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uint32_t w, uint32_t h, uint32_t format, uint32_t usage) {
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VDS_LOGW_IF(mDbgState != DBG_STATE_PREPARED,
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"Unexpected dequeueBuffer() in %s state", dbgStateStr());
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mDbgState = DBG_STATE_GLES;
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VDS_LOGW_IF(!async, "EGL called dequeueBuffer with !async despite eglSwapInterval(0)");
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VDS_LOGV("dequeueBuffer %dx%d fmt=%d usage=%#x", w, h, format, usage);
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status_t result = NO_ERROR;
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Source source = fbSourceForCompositionType(mCompositionType);
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if (source == SOURCE_SINK) {
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if (mOutputProducerSlot < 0) {
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// Last chance bailout if something bad happened earlier. For example,
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// in a GLES configuration, if the sink disappears then dequeueBuffer
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// will fail, the GLES driver won't queue a buffer, but SurfaceFlinger
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// will soldier on. So we end up here without a buffer. There should
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// be lots of scary messages in the log just before this.
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VDS_LOGE("dequeueBuffer: no buffer, bailing out");
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return NO_MEMORY;
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}
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// We already dequeued the output buffer. If the GLES driver wants
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// something incompatible, we have to cancel and get a new one. This
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// will mean that HWC will see a different output buffer between
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// prepare and set, but since we're in GLES-only mode already it
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// shouldn't matter.
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usage |= GRALLOC_USAGE_HW_COMPOSER;
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const sp<GraphicBuffer>& buf = mProducerBuffers[mOutputProducerSlot];
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if ((usage & ~buf->getUsage()) != 0 ||
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(format != 0 && format != (uint32_t)buf->getPixelFormat()) ||
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(w != 0 && w != mSinkBufferWidth) ||
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(h != 0 && h != mSinkBufferHeight)) {
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VDS_LOGV("dequeueBuffer: dequeueing new output buffer: "
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"want %dx%d fmt=%d use=%#x, "
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"have %dx%d fmt=%d use=%#x",
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w, h, format, usage,
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mSinkBufferWidth, mSinkBufferHeight,
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buf->getPixelFormat(), buf->getUsage());
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mOutputFormat = format;
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mOutputUsage = usage;
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result = refreshOutputBuffer();
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if (result < 0)
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return result;
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}
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}
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if (source == SOURCE_SINK) {
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*pslot = mOutputProducerSlot;
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*fence = mOutputFence;
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} else {
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int sslot;
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result = dequeueBuffer(source, format, usage, &sslot, fence);
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if (result >= 0) {
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*pslot = mapSource2ProducerSlot(source, sslot);
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}
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}
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return result;
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}
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status_t VirtualDisplaySurface::detachBuffer(int /* slot */) {
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VDS_LOGE("detachBuffer is not available for VirtualDisplaySurface");
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return INVALID_OPERATION;
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}
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status_t VirtualDisplaySurface::attachBuffer(int* /* outSlot */,
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const sp<GraphicBuffer>& /* buffer */) {
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VDS_LOGE("attachBuffer is not available for VirtualDisplaySurface");
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return INVALID_OPERATION;
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}
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status_t VirtualDisplaySurface::queueBuffer(int pslot,
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const QueueBufferInput& input, QueueBufferOutput* output) {
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VDS_LOGW_IF(mDbgState != DBG_STATE_GLES,
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"Unexpected queueBuffer(pslot=%d) in %s state", pslot,
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dbgStateStr());
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mDbgState = DBG_STATE_GLES_DONE;
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VDS_LOGV("queueBuffer pslot=%d", pslot);
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status_t result;
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if (mCompositionType == COMPOSITION_MIXED) {
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// Queue the buffer back into the scratch pool
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QueueBufferOutput scratchQBO;
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int sslot = mapProducer2SourceSlot(SOURCE_SCRATCH, pslot);
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result = mSource[SOURCE_SCRATCH]->queueBuffer(sslot, input, &scratchQBO);
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if (result != NO_ERROR)
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return result;
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// Now acquire the buffer from the scratch pool -- should be the same
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// slot and fence as we just queued.
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Mutex::Autolock lock(mMutex);
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BufferQueue::BufferItem item;
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result = acquireBufferLocked(&item, 0);
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if (result != NO_ERROR)
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return result;
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VDS_LOGW_IF(item.mBuf != sslot,
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"queueBuffer: acquired sslot %d from SCRATCH after queueing sslot %d",
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item.mBuf, sslot);
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mFbProducerSlot = mapSource2ProducerSlot(SOURCE_SCRATCH, item.mBuf);
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mFbFence = mSlots[item.mBuf].mFence;
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} else {
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LOG_FATAL_IF(mCompositionType != COMPOSITION_GLES,
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"Unexpected queueBuffer in state %s for compositionType %s",
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dbgStateStr(), dbgCompositionTypeStr(mCompositionType));
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// Extract the GLES release fence for HWC to acquire
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int64_t timestamp;
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bool isAutoTimestamp;
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Rect crop;
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int scalingMode;
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uint32_t transform;
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bool async;
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input.deflate(×tamp, &isAutoTimestamp, &crop, &scalingMode,
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&transform, &async, &mFbFence);
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mFbProducerSlot = pslot;
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mOutputFence = mFbFence;
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}
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*output = mQueueBufferOutput;
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return NO_ERROR;
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}
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void VirtualDisplaySurface::cancelBuffer(int pslot, const sp<Fence>& fence) {
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VDS_LOGW_IF(mDbgState != DBG_STATE_GLES,
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"Unexpected cancelBuffer(pslot=%d) in %s state", pslot,
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dbgStateStr());
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VDS_LOGV("cancelBuffer pslot=%d", pslot);
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Source source = fbSourceForCompositionType(mCompositionType);
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return mSource[source]->cancelBuffer(
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mapProducer2SourceSlot(source, pslot), fence);
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}
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int VirtualDisplaySurface::query(int what, int* value) {
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return mSource[SOURCE_SINK]->query(what, value);
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}
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status_t VirtualDisplaySurface::connect(const sp<IBinder>& token,
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int api, bool producerControlledByApp,
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QueueBufferOutput* output) {
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QueueBufferOutput qbo;
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status_t result = mSource[SOURCE_SINK]->connect(token, api, producerControlledByApp, &qbo);
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if (result == NO_ERROR) {
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|
updateQueueBufferOutput(qbo);
|
|
*output = mQueueBufferOutput;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
status_t VirtualDisplaySurface::disconnect(int api) {
|
|
return mSource[SOURCE_SINK]->disconnect(api);
|
|
}
|
|
|
|
void VirtualDisplaySurface::updateQueueBufferOutput(
|
|
const QueueBufferOutput& qbo) {
|
|
uint32_t w, h, transformHint, numPendingBuffers;
|
|
qbo.deflate(&w, &h, &transformHint, &numPendingBuffers);
|
|
mQueueBufferOutput.inflate(w, h, 0, numPendingBuffers);
|
|
}
|
|
|
|
void VirtualDisplaySurface::resetPerFrameState() {
|
|
mCompositionType = COMPOSITION_UNKNOWN;
|
|
mSinkBufferWidth = 0;
|
|
mSinkBufferHeight = 0;
|
|
mFbFence = Fence::NO_FENCE;
|
|
mOutputFence = Fence::NO_FENCE;
|
|
mOutputProducerSlot = -1;
|
|
mFbProducerSlot = -1;
|
|
}
|
|
|
|
status_t VirtualDisplaySurface::refreshOutputBuffer() {
|
|
if (mOutputProducerSlot >= 0) {
|
|
mSource[SOURCE_SINK]->cancelBuffer(
|
|
mapProducer2SourceSlot(SOURCE_SINK, mOutputProducerSlot),
|
|
mOutputFence);
|
|
}
|
|
|
|
int sslot;
|
|
status_t result = dequeueBuffer(SOURCE_SINK, mOutputFormat, mOutputUsage,
|
|
&sslot, &mOutputFence);
|
|
if (result < 0)
|
|
return result;
|
|
mOutputProducerSlot = mapSource2ProducerSlot(SOURCE_SINK, sslot);
|
|
|
|
// On GLES-only frames, we don't have the right output buffer acquire fence
|
|
// until after GLES calls queueBuffer(). So here we just set the buffer
|
|
// (for use in HWC prepare) but not the fence; we'll call this again with
|
|
// the proper fence once we have it.
|
|
result = mHwc.setOutputBuffer(mDisplayId, Fence::NO_FENCE,
|
|
mProducerBuffers[mOutputProducerSlot]);
|
|
|
|
return result;
|
|
}
|
|
|
|
// This slot mapping function is its own inverse, so two copies are unnecessary.
|
|
// Both are kept to make the intent clear where the function is called, and for
|
|
// the (unlikely) chance that we switch to a different mapping function.
|
|
int VirtualDisplaySurface::mapSource2ProducerSlot(Source source, int sslot) {
|
|
if (source == SOURCE_SCRATCH) {
|
|
return BufferQueue::NUM_BUFFER_SLOTS - sslot - 1;
|
|
} else {
|
|
return sslot;
|
|
}
|
|
}
|
|
int VirtualDisplaySurface::mapProducer2SourceSlot(Source source, int pslot) {
|
|
return mapSource2ProducerSlot(source, pslot);
|
|
}
|
|
|
|
VirtualDisplaySurface::Source
|
|
VirtualDisplaySurface::fbSourceForCompositionType(CompositionType type) {
|
|
return type == COMPOSITION_MIXED ? SOURCE_SCRATCH : SOURCE_SINK;
|
|
}
|
|
|
|
const char* VirtualDisplaySurface::dbgStateStr() const {
|
|
switch (mDbgState) {
|
|
case DBG_STATE_IDLE: return "IDLE";
|
|
case DBG_STATE_PREPARED: return "PREPARED";
|
|
case DBG_STATE_GLES: return "GLES";
|
|
case DBG_STATE_GLES_DONE: return "GLES_DONE";
|
|
case DBG_STATE_HWC: return "HWC";
|
|
default: return "INVALID";
|
|
}
|
|
}
|
|
|
|
const char* VirtualDisplaySurface::dbgSourceStr(Source s) {
|
|
switch (s) {
|
|
case SOURCE_SINK: return "SINK";
|
|
case SOURCE_SCRATCH: return "SCRATCH";
|
|
default: return "INVALID";
|
|
}
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
} // namespace android
|
|
// ---------------------------------------------------------------------------
|