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Remove experimental HWC virtual display support

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Bug: 8384764
Change-Id: I97b52ed83ad85466bd91cb9291308994048568a1
This commit is contained in:
Jesse Hall 2013-05-07 11:58:47 -07:00
parent 223b953cf7
commit e737c11cd8
6 changed files with 17 additions and 490 deletions
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1
services/surfaceflinger/Android.mk
View File

@ -14,7 +14,6 @@ LOCAL_SRC_FILES:= \
SurfaceFlingerConsumer.cpp \
SurfaceTextureLayer.cpp \
Transform.cpp \
DisplayHardware/BufferQueueInterposer.cpp \
DisplayHardware/FramebufferSurface.cpp \
DisplayHardware/HWComposer.cpp \
DisplayHardware/PowerHAL.cpp \

226
services/surfaceflinger/DisplayHardware/BufferQueueInterposer.cpp
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@ -1,226 +0,0 @@
/*
* Copyright 2013 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.
*/
#undef LOG_TAG
#define LOG_TAG "BQInterposer"
//#define LOG_NDEBUG 0
#include "BufferQueueInterposer.h"
// ---------------------------------------------------------------------------
namespace android {
// ---------------------------------------------------------------------------
#define BQI_LOGV(x, ...) ALOGV("[%s] "x, mName.string(), ##__VA_ARGS__)
#define BQI_LOGD(x, ...) ALOGD("[%s] "x, mName.string(), ##__VA_ARGS__)
#define BQI_LOGI(x, ...) ALOGI("[%s] "x, mName.string(), ##__VA_ARGS__)
#define BQI_LOGW(x, ...) ALOGW("[%s] "x, mName.string(), ##__VA_ARGS__)
#define BQI_LOGE(x, ...) ALOGE("[%s] "x, mName.string(), ##__VA_ARGS__)
// Get an ID that's unique within this process.
static int32_t createProcessUniqueId() {
static volatile int32_t globalCounter = 0;
return android_atomic_inc(&globalCounter);
}
BufferQueueInterposer::BufferQueueInterposer(
const sp<IGraphicBufferProducer>& sink, const String8& name)
: mSink(sink),
mName(name),
mAcquired(false)
{
BQI_LOGV("BufferQueueInterposer sink=%p", sink.get());
}
BufferQueueInterposer::~BufferQueueInterposer() {
Mutex::Autolock lock(mMutex);
flushQueuedBuffersLocked();
BQI_LOGV("~BufferQueueInterposer");
}
status_t BufferQueueInterposer::requestBuffer(int slot,
sp<GraphicBuffer>* outBuf) {
BQI_LOGV("requestBuffer slot=%d", slot);
Mutex::Autolock lock(mMutex);
if (size_t(slot) >= mBuffers.size()) {
size_t size = mBuffers.size();
mBuffers.insertAt(size, size - slot + 1);
}
sp<GraphicBuffer>& buf = mBuffers.editItemAt(slot);
status_t result = mSink->requestBuffer(slot, &buf);
*outBuf = buf;
return result;
}
status_t BufferQueueInterposer::setBufferCount(int bufferCount) {
BQI_LOGV("setBufferCount count=%d", bufferCount);
Mutex::Autolock lock(mMutex);
bufferCount += 1;
status_t result = flushQueuedBuffersLocked();
if (result != NO_ERROR)
return result;
result = mSink->setBufferCount(bufferCount);
if (result != NO_ERROR)
return result;
for (size_t i = 0; i < mBuffers.size(); i++)
mBuffers.editItemAt(i).clear();
ssize_t n = mBuffers.resize(bufferCount);
result = (n < 0) ? n : result;
return result;
}
status_t BufferQueueInterposer::dequeueBuffer(int* slot, sp<Fence>* fence,
uint32_t w, uint32_t h, uint32_t format, uint32_t usage) {
BQI_LOGV("dequeueBuffer %ux%u fmt=%u usage=%#x", w, h, format, usage);
return mSink->dequeueBuffer(slot, fence, w, h, format, usage);
}
status_t BufferQueueInterposer::queueBuffer(int slot,
const QueueBufferInput& input, QueueBufferOutput* output) {
BQI_LOGV("queueBuffer slot=%d", slot);
Mutex::Autolock lock(mMutex);
mQueue.push(QueuedBuffer(slot, input));
*output = mQueueBufferOutput;
return NO_ERROR;
}
void BufferQueueInterposer::cancelBuffer(int slot, const sp<Fence>& fence) {
BQI_LOGV("cancelBuffer slot=%d", slot);
mSink->cancelBuffer(slot, fence);
}
int BufferQueueInterposer::query(int what, int* value) {
BQI_LOGV("query what=%d", what);
return mSink->query(what, value);
}
status_t BufferQueueInterposer::setSynchronousMode(bool enabled) {
BQI_LOGV("setSynchronousMode %s", enabled ? "true" : "false");
return mSink->setSynchronousMode(enabled);
}
status_t BufferQueueInterposer::connect(int api, QueueBufferOutput* output) {
BQI_LOGV("connect api=%d", api);
Mutex::Autolock lock(mMutex);
status_t result = mSink->connect(api, &mQueueBufferOutput);
if (result == NO_ERROR) {
*output = mQueueBufferOutput;
}
return result;
}
status_t BufferQueueInterposer::disconnect(int api) {
BQI_LOGV("disconnect: api=%d", api);
Mutex::Autolock lock(mMutex);
flushQueuedBuffersLocked();
return mSink->disconnect(api);
}
status_t BufferQueueInterposer::pullEmptyBuffer() {
status_t result;
int slot;
sp<Fence> fence;
result = dequeueBuffer(&slot, &fence, 0, 0, 0, 0);
if (result == IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION) {
sp<GraphicBuffer> buffer;
result = requestBuffer(slot, &buffer);
} else if (result != NO_ERROR) {
return result;
}
uint32_t w, h, transformHint, numPendingBuffers;
mQueueBufferOutput.deflate(&w, &h, &transformHint, &numPendingBuffers);
IGraphicBufferProducer::QueueBufferInput qbi(0, Rect(w, h),
NATIVE_WINDOW_SCALING_MODE_FREEZE, 0, fence);
IGraphicBufferProducer::QueueBufferOutput qbo;
result = queueBuffer(slot, qbi, &qbo);
if (result != NO_ERROR)
return result;
return NO_ERROR;
}
status_t BufferQueueInterposer::acquireBuffer(sp<GraphicBuffer>* buf,
sp<Fence>* fence) {
Mutex::Autolock lock(mMutex);
if (mQueue.empty()) {
BQI_LOGV("acquireBuffer: no buffers available");
return NO_BUFFER_AVAILABLE;
}
if (mAcquired) {
BQI_LOGE("acquireBuffer: buffer already acquired");
return BUFFER_ALREADY_ACQUIRED;
}
BQI_LOGV("acquireBuffer: acquiring slot %d", mQueue[0].slot);
*buf = mBuffers[mQueue[0].slot];
*fence = mQueue[0].fence;
mAcquired = true;
return NO_ERROR;
}
status_t BufferQueueInterposer::releaseBuffer(const sp<Fence>& fence) {
Mutex::Autolock lock(mMutex);
if (!mAcquired) {
BQI_LOGE("releaseBuffer: releasing a non-acquired buffer");
return BUFFER_NOT_ACQUIRED;
}
BQI_LOGV("releaseBuffer: releasing slot %d to sink", mQueue[0].slot);
const QueuedBuffer& b = mQueue[0];
status_t result = mSink->queueBuffer(b.slot,
QueueBufferInput(b.timestamp, b.crop, b.scalingMode,
b.transform, b.fence),
&mQueueBufferOutput);
mQueue.removeAt(0);
mAcquired = false;
return result;
}
status_t BufferQueueInterposer::flushQueuedBuffersLocked() {
if (mAcquired) {
BQI_LOGE("flushQueuedBuffersLocked: buffer acquired, can't flush");
return INVALID_OPERATION;
}
status_t result = NO_ERROR;
for (size_t i = 0; i < mQueue.size(); i++) {
const QueuedBuffer& b = mQueue[i];
BQI_LOGV("flushing queued slot %d to sink", b.slot);
status_t err = mSink->queueBuffer(b.slot,
QueueBufferInput(b.timestamp, b.crop, b.scalingMode,
b.transform, b.fence),
&mQueueBufferOutput);
if (err != NO_ERROR && result == NO_ERROR) // latch first error
result = err;
}
mQueue.clear();
return result;
}
// ---------------------------------------------------------------------------
} // namespace android
// ---------------------------------------------------------------------------

152
services/surfaceflinger/DisplayHardware/BufferQueueInterposer.h
View File

@ -1,152 +0,0 @@
/*
* Copyright 2013 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.
*/
#ifndef ANDROID_SF_BUFFERQUEUEINTERPOSER_H
#define ANDROID_SF_BUFFERQUEUEINTERPOSER_H
#include <gui/IGraphicBufferProducer.h>
#include <utils/Mutex.h>
#include <utils/Vector.h>
// ---------------------------------------------------------------------------
namespace android {
// ---------------------------------------------------------------------------
// BufferQueueInterposers introduce an extra stage between a buffer producer
// (the source) and a buffer consumer (the sink), which communicate via the
// IGraphicBufferProducer interface. It is designed to be as transparent as
// possible to both endpoints, so that they can work the same whether an
// interposer is present or not.
//
// When the interpose is present, the source queues buffers to the
// IGraphicBufferProducer implemented by BufferQueueInterposer. A client of
// the BufferQueueInterposer can acquire each buffer in turn and read or
// modify it, releasing the buffer when finished. When the buffer is released,
// the BufferQueueInterposer queues it to the original IGraphicBufferProducer
// interface representing the sink.
//
// A BufferQueueInterposer can be used to do additional rendering to a buffer
// before it is consumed -- essentially pipelining two producers. As an
// example, SurfaceFlinger uses this to implement mixed GLES and HWC
// compositing to the same buffer for virtual displays. If it used two separate
// buffer queues, then in GLES-only or mixed GLES+HWC compositing, the HWC
// would have to copy the GLES output buffer to the HWC output buffer, using
// more bandwidth than having HWC do additional composition "in place" on the
// GLES output buffer.
//
// The goal for this class is to be usable in a variety of situations and be
// part of libgui. But both the interface and implementation need some
// iteration before then, so for now it should only be used by
// VirtualDisplaySurface, which is why it's currently in SurfaceFlinger.
//
// Some of the problems that still need to be solved are:
//
// - Refactor the interposer interface along with BufferQueue and ConsumerBase,
// so that there is a common interface for the consumer end of a queue. The
// existing interfaces have some problems when the implementation isn't the
// final consumer.
//
// - The client of the interposer may need one or more buffers in addition to
// those used by the source and sink. IGraphicBufferProducer will probably
// need to change to allow the producer to specify how many buffers it needs
// to dequeue at a time, and then the interposer can add its requirements to
// those of the source.
//
// - Abandoning, disconnecting, and connecting need to pass through somehow.
// There needs to be a way to tell the interposer client to release its
// buffer immediately so it can be queued/released, e.g. when the source
// calls disconnect().
//
// - Right now the source->BQI queue is synchronous even if the BQI->sink queue
// is asynchronous. Need to figure out how asynchronous should behave and
// implement that.
class BufferQueueInterposer : public BnGraphicBufferProducer {
public:
BufferQueueInterposer(const sp<IGraphicBufferProducer>& sink,
const String8& name);
//
// IGraphicBufferProducer interface
//
virtual status_t requestBuffer(int slot, sp<GraphicBuffer>* outBuf);
virtual status_t setBufferCount(int bufferCount);
virtual status_t dequeueBuffer(int* slot, sp<Fence>* fence,
uint32_t w, uint32_t h, uint32_t format, uint32_t usage);
virtual status_t queueBuffer(int slot,
const QueueBufferInput& input, QueueBufferOutput* output);
virtual void cancelBuffer(int slot, const sp<Fence>& fence);
virtual int query(int what, int* value);
virtual status_t setSynchronousMode(bool enabled);
virtual status_t connect(int api, QueueBufferOutput* output);
virtual status_t disconnect(int api);
//
// Interposer interface
//
enum {
NO_BUFFER_AVAILABLE = 2, // matches BufferQueue
BUFFER_NOT_ACQUIRED,
BUFFER_ALREADY_ACQUIRED,
};
// Acquire the oldest queued buffer. If no buffers are pending, returns
// NO_BUFFER_AVAILABLE. If a buffer is currently acquired, returns
// BUFFER_ALREADY_ACQUIRED.
status_t acquireBuffer(sp<GraphicBuffer>* buf, sp<Fence>* fence);
// Release the currently acquired buffer, queueing it to the sink. If the
// current buffer hasn't been acquired, returns BUFFER_NOT_ACQUIRED.
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();
private:
struct QueuedBuffer {
QueuedBuffer(): slot(-1) {}
QueuedBuffer(int slot, const QueueBufferInput& qbi): slot(slot) {
qbi.deflate(&timestamp, &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

10
services/surfaceflinger/DisplayHardware/HWComposer.cpp
View File

@ -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
@ -581,7 +585,7 @@ 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)) {

74
services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
View File

@ -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 {

44
services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
View File

@ -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;
};
// ---------------------------------------------------------------------------