ADHOC/replicant-frameworks_native
3
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
4cbf3c5344
replicant-frameworks_native/libs/gui/Surface.cpp
Dan Stoza f0eaf25e92 BufferQueue: Add producer buffer-released callback 
Add a callback to the producer side, onBufferReleased, which will be
called every time the consumer releases a buffer back to the
BufferQueue. This will enable a buffer stream splitter to work
autonomously without having to block on dequeueBuffer.

The binder object used for the callback replaces the generic IBinder
token that was passed into IGraphicBufferProducer::connect to detect
the death of the producer. If a producer does not wish to listen for
buffer release events, it can pass in an instance of the
DummyProducerListener class defined in IProducerListener.h, if it even
cares about death events (BufferQueue doesn't enforce the token being
non-NULL, though perhaps we should).

Change-Id: I23935760673524abeafea2b58dccc3583b368710
2014-03-31 14:10:07 -07:00

867 lines
25 KiB
C++
Raw Blame History

/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "Surface"
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
//#define LOG_NDEBUG 0
#include <android/native_window.h>
#include <binder/Parcel.h>
#include <utils/Log.h>
#include <utils/Trace.h>
#include <ui/Fence.h>
#include <gui/IProducerListener.h>
#include <gui/ISurfaceComposer.h>
#include <gui/SurfaceComposerClient.h>
#include <gui/GLConsumer.h>
#include <gui/Surface.h>
#include <private/gui/ComposerService.h>
namespace android {
Surface::Surface(
const sp<IGraphicBufferProducer>& bufferProducer,
bool controlledByApp)
: mGraphicBufferProducer(bufferProducer)
{
// Initialize the ANativeWindow function pointers.
ANativeWindow::setSwapInterval = hook_setSwapInterval;
ANativeWindow::dequeueBuffer = hook_dequeueBuffer;
ANativeWindow::cancelBuffer = hook_cancelBuffer;
ANativeWindow::queueBuffer = hook_queueBuffer;
ANativeWindow::query = hook_query;
ANativeWindow::perform = hook_perform;
ANativeWindow::dequeueBuffer_DEPRECATED = hook_dequeueBuffer_DEPRECATED;
ANativeWindow::cancelBuffer_DEPRECATED = hook_cancelBuffer_DEPRECATED;
ANativeWindow::lockBuffer_DEPRECATED = hook_lockBuffer_DEPRECATED;
ANativeWindow::queueBuffer_DEPRECATED = hook_queueBuffer_DEPRECATED;
const_cast<int&>(ANativeWindow::minSwapInterval) = 0;
const_cast<int&>(ANativeWindow::maxSwapInterval) = 1;
mReqWidth = 0;
mReqHeight = 0;
mReqFormat = 0;
mReqUsage = 0;
mTimestamp = NATIVE_WINDOW_TIMESTAMP_AUTO;
mCrop.clear();
mScalingMode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
mTransform = 0;
mDefaultWidth = 0;
mDefaultHeight = 0;
mUserWidth = 0;
mUserHeight = 0;
mTransformHint = 0;
mConsumerRunningBehind = false;
mConnectedToCpu = false;
mProducerControlledByApp = controlledByApp;
mSwapIntervalZero = false;
}
Surface::~Surface() {
if (mConnectedToCpu) {
Surface::disconnect(NATIVE_WINDOW_API_CPU);
}
}
sp<IGraphicBufferProducer> Surface::getIGraphicBufferProducer() const {
return mGraphicBufferProducer;
}
void Surface::setSidebandStream(const sp<NativeHandle>& stream) {
mGraphicBufferProducer->setSidebandStream(stream);
}
int Surface::hook_setSwapInterval(ANativeWindow* window, int interval) {
Surface* c = getSelf(window);
return c->setSwapInterval(interval);
}
int Surface::hook_dequeueBuffer(ANativeWindow* window,
ANativeWindowBuffer** buffer, int* fenceFd) {
Surface* c = getSelf(window);
return c->dequeueBuffer(buffer, fenceFd);
}
int Surface::hook_cancelBuffer(ANativeWindow* window,
ANativeWindowBuffer* buffer, int fenceFd) {
Surface* c = getSelf(window);
return c->cancelBuffer(buffer, fenceFd);
}
int Surface::hook_queueBuffer(ANativeWindow* window,
ANativeWindowBuffer* buffer, int fenceFd) {
Surface* c = getSelf(window);
return c->queueBuffer(buffer, fenceFd);
}
int Surface::hook_dequeueBuffer_DEPRECATED(ANativeWindow* window,
ANativeWindowBuffer** buffer) {
Surface* c = getSelf(window);
ANativeWindowBuffer* buf;
int fenceFd = -1;
int result = c->dequeueBuffer(&buf, &fenceFd);
sp<Fence> fence(new Fence(fenceFd));
int waitResult = fence->waitForever("dequeueBuffer_DEPRECATED");
if (waitResult != OK) {
ALOGE("dequeueBuffer_DEPRECATED: Fence::wait returned an error: %d",
waitResult);
c->cancelBuffer(buf, -1);
return waitResult;
}
*buffer = buf;
return result;
}
int Surface::hook_cancelBuffer_DEPRECATED(ANativeWindow* window,
ANativeWindowBuffer* buffer) {
Surface* c = getSelf(window);
return c->cancelBuffer(buffer, -1);
}
int Surface::hook_lockBuffer_DEPRECATED(ANativeWindow* window,
ANativeWindowBuffer* buffer) {
Surface* c = getSelf(window);
return c->lockBuffer_DEPRECATED(buffer);
}
int Surface::hook_queueBuffer_DEPRECATED(ANativeWindow* window,
ANativeWindowBuffer* buffer) {
Surface* c = getSelf(window);
return c->queueBuffer(buffer, -1);
}
int Surface::hook_query(const ANativeWindow* window,
int what, int* value) {
const Surface* c = getSelf(window);
return c->query(what, value);
}
int Surface::hook_perform(ANativeWindow* window, int operation, ...) {
va_list args;
va_start(args, operation);
Surface* c = getSelf(window);
return c->perform(operation, args);
}
int Surface::setSwapInterval(int interval) {
ATRACE_CALL();
// EGL specification states:
// interval is silently clamped to minimum and maximum implementation
// dependent values before being stored.
if (interval < minSwapInterval)
interval = minSwapInterval;
if (interval > maxSwapInterval)
interval = maxSwapInterval;
mSwapIntervalZero = (interval == 0);
return NO_ERROR;
}
int Surface::dequeueBuffer(android_native_buffer_t** buffer, int* fenceFd) {
ATRACE_CALL();
ALOGV("Surface::dequeueBuffer");
int reqW;
int reqH;
bool swapIntervalZero;
uint32_t reqFormat;
uint32_t reqUsage;
{
Mutex::Autolock lock(mMutex);
reqW = mReqWidth ? mReqWidth : mUserWidth;
reqH = mReqHeight ? mReqHeight : mUserHeight;
swapIntervalZero = mSwapIntervalZero;
reqFormat = mReqFormat;
reqUsage = mReqUsage;
} // Drop the lock so that we can still touch the Surface while blocking in IGBP::dequeueBuffer
int buf = -1;
sp<Fence> fence;
status_t result = mGraphicBufferProducer->dequeueBuffer(&buf, &fence, swapIntervalZero,
reqW, reqH, reqFormat, reqUsage);
if (result < 0) {
ALOGV("dequeueBuffer: IGraphicBufferProducer::dequeueBuffer(%d, %d, %d, %d, %d)"
"failed: %d", swapIntervalZero, reqW, reqH, reqFormat, reqUsage,
result);
return result;
}
Mutex::Autolock lock(mMutex);
sp<GraphicBuffer>& gbuf(mSlots[buf].buffer);
// this should never happen
ALOGE_IF(fence == NULL, "Surface::dequeueBuffer: received null Fence! buf=%d", buf);
if (result & IGraphicBufferProducer::RELEASE_ALL_BUFFERS) {
freeAllBuffers();
}
if ((result & IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION) || gbuf == 0) {
result = mGraphicBufferProducer->requestBuffer(buf, &gbuf);
if (result != NO_ERROR) {
ALOGE("dequeueBuffer: IGraphicBufferProducer::requestBuffer failed: %d", result);
return result;
}
}
if (fence->isValid()) {
*fenceFd = fence->dup();
if (*fenceFd == -1) {
ALOGE("dequeueBuffer: error duping fence: %d", errno);
// dup() should never fail; something is badly wrong. Soldier on
// and hope for the best; the worst that should happen is some
// visible corruption that lasts until the next frame.
}
} else {
*fenceFd = -1;
}
*buffer = gbuf.get();
return OK;
}
int Surface::cancelBuffer(android_native_buffer_t* buffer,
int fenceFd) {
ATRACE_CALL();
ALOGV("Surface::cancelBuffer");
Mutex::Autolock lock(mMutex);
int i = getSlotFromBufferLocked(buffer);
if (i < 0) {
return i;
}
sp<Fence> fence(fenceFd >= 0 ? new Fence(fenceFd) : Fence::NO_FENCE);
mGraphicBufferProducer->cancelBuffer(i, fence);
return OK;
}
int Surface::getSlotFromBufferLocked(
android_native_buffer_t* buffer) const {
bool dumpedState = false;
for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
if (mSlots[i].buffer != NULL &&
mSlots[i].buffer->handle == buffer->handle) {
return i;
}
}
ALOGE("getSlotFromBufferLocked: unknown buffer: %p", buffer->handle);
return BAD_VALUE;
}
int Surface::lockBuffer_DEPRECATED(android_native_buffer_t* buffer __attribute__((unused))) {
ALOGV("Surface::lockBuffer");
Mutex::Autolock lock(mMutex);
return OK;
}
int Surface::queueBuffer(android_native_buffer_t* buffer, int fenceFd) {
ATRACE_CALL();
ALOGV("Surface::queueBuffer");
Mutex::Autolock lock(mMutex);
int64_t timestamp;
bool isAutoTimestamp = false;
if (mTimestamp == NATIVE_WINDOW_TIMESTAMP_AUTO) {
timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
isAutoTimestamp = true;
ALOGV("Surface::queueBuffer making up timestamp: %.2f ms",
timestamp / 1000000.f);
} else {
timestamp = mTimestamp;
}
int i = getSlotFromBufferLocked(buffer);
if (i < 0) {
return i;
}
// Make sure the crop rectangle is entirely inside the buffer.
Rect crop;
mCrop.intersect(Rect(buffer->width, buffer->height), &crop);
sp<Fence> fence(fenceFd >= 0 ? new Fence(fenceFd) : Fence::NO_FENCE);
IGraphicBufferProducer::QueueBufferOutput output;
IGraphicBufferProducer::QueueBufferInput input(timestamp, isAutoTimestamp,
crop, mScalingMode, mTransform, mSwapIntervalZero, fence);
status_t err = mGraphicBufferProducer->queueBuffer(i, input, &output);
if (err != OK) {
ALOGE("queueBuffer: error queuing buffer to SurfaceTexture, %d", err);
}
uint32_t numPendingBuffers = 0;
output.deflate(&mDefaultWidth, &mDefaultHeight, &mTransformHint,
&numPendingBuffers);
mConsumerRunningBehind = (numPendingBuffers >= 2);
return err;
}
int Surface::query(int what, int* value) const {
ATRACE_CALL();
ALOGV("Surface::query");
{ // scope for the lock
Mutex::Autolock lock(mMutex);
switch (what) {
case NATIVE_WINDOW_FORMAT:
if (mReqFormat) {
*value = mReqFormat;
return NO_ERROR;
}
break;
case NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER: {
sp<ISurfaceComposer> composer(
ComposerService::getComposerService());
if (composer->authenticateSurfaceTexture(mGraphicBufferProducer)) {
*value = 1;
} else {
*value = 0;
}
return NO_ERROR;
}
case NATIVE_WINDOW_CONCRETE_TYPE:
*value = NATIVE_WINDOW_SURFACE;
return NO_ERROR;
case NATIVE_WINDOW_DEFAULT_WIDTH:
*value = mUserWidth ? mUserWidth : mDefaultWidth;
return NO_ERROR;
case NATIVE_WINDOW_DEFAULT_HEIGHT:
*value = mUserHeight ? mUserHeight : mDefaultHeight;
return NO_ERROR;
case NATIVE_WINDOW_TRANSFORM_HINT:
*value = mTransformHint;
return NO_ERROR;
case NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND: {
status_t err = NO_ERROR;
if (!mConsumerRunningBehind) {
*value = 0;
} else {
err = mGraphicBufferProducer->query(what, value);
if (err == NO_ERROR) {
mConsumerRunningBehind = *value;
}
}
return err;
}
}
}
return mGraphicBufferProducer->query(what, value);
}
int Surface::perform(int operation, va_list args)
{
int res = NO_ERROR;
switch (operation) {
case NATIVE_WINDOW_CONNECT:
// deprecated. must return NO_ERROR.
break;
case NATIVE_WINDOW_DISCONNECT:
// deprecated. must return NO_ERROR.
break;
case NATIVE_WINDOW_SET_USAGE:
res = dispatchSetUsage(args);
break;
case NATIVE_WINDOW_SET_CROP:
res = dispatchSetCrop(args);
break;
case NATIVE_WINDOW_SET_BUFFER_COUNT:
res = dispatchSetBufferCount(args);
break;
case NATIVE_WINDOW_SET_BUFFERS_GEOMETRY:
res = dispatchSetBuffersGeometry(args);
break;
case NATIVE_WINDOW_SET_BUFFERS_TRANSFORM:
res = dispatchSetBuffersTransform(args);
break;
case NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP:
res = dispatchSetBuffersTimestamp(args);
break;
case NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS:
res = dispatchSetBuffersDimensions(args);
break;
case NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS:
res = dispatchSetBuffersUserDimensions(args);
break;
case NATIVE_WINDOW_SET_BUFFERS_FORMAT:
res = dispatchSetBuffersFormat(args);
break;
case NATIVE_WINDOW_LOCK:
res = dispatchLock(args);
break;
case NATIVE_WINDOW_UNLOCK_AND_POST:
res = dispatchUnlockAndPost(args);
break;
case NATIVE_WINDOW_SET_SCALING_MODE:
res = dispatchSetScalingMode(args);
break;
case NATIVE_WINDOW_API_CONNECT:
res = dispatchConnect(args);
break;
case NATIVE_WINDOW_API_DISCONNECT:
res = dispatchDisconnect(args);
break;
default:
res = NAME_NOT_FOUND;
break;
}
return res;
}
int Surface::dispatchConnect(va_list args) {
int api = va_arg(args, int);
return connect(api);
}
int Surface::dispatchDisconnect(va_list args) {
int api = va_arg(args, int);
return disconnect(api);
}
int Surface::dispatchSetUsage(va_list args) {
int usage = va_arg(args, int);
return setUsage(usage);
}
int Surface::dispatchSetCrop(va_list args) {
android_native_rect_t const* rect = va_arg(args, android_native_rect_t*);
return setCrop(reinterpret_cast<Rect const*>(rect));
}
int Surface::dispatchSetBufferCount(va_list args) {
size_t bufferCount = va_arg(args, size_t);
return setBufferCount(bufferCount);
}
int Surface::dispatchSetBuffersGeometry(va_list args) {
int w = va_arg(args, int);
int h = va_arg(args, int);
int f = va_arg(args, int);
int err = setBuffersDimensions(w, h);
if (err != 0) {
return err;
}
return setBuffersFormat(f);
}
int Surface::dispatchSetBuffersDimensions(va_list args) {
int w = va_arg(args, int);
int h = va_arg(args, int);
return setBuffersDimensions(w, h);
}
int Surface::dispatchSetBuffersUserDimensions(va_list args) {
int w = va_arg(args, int);
int h = va_arg(args, int);
return setBuffersUserDimensions(w, h);
}
int Surface::dispatchSetBuffersFormat(va_list args) {
int f = va_arg(args, int);
return setBuffersFormat(f);
}
int Surface::dispatchSetScalingMode(va_list args) {
int m = va_arg(args, int);
return setScalingMode(m);
}
int Surface::dispatchSetBuffersTransform(va_list args) {
int transform = va_arg(args, int);
return setBuffersTransform(transform);
}
int Surface::dispatchSetBuffersTimestamp(va_list args) {
int64_t timestamp = va_arg(args, int64_t);
return setBuffersTimestamp(timestamp);
}
int Surface::dispatchLock(va_list args) {
ANativeWindow_Buffer* outBuffer = va_arg(args, ANativeWindow_Buffer*);
ARect* inOutDirtyBounds = va_arg(args, ARect*);
return lock(outBuffer, inOutDirtyBounds);
}
int Surface::dispatchUnlockAndPost(va_list args __attribute__((unused))) {
return unlockAndPost();
}
int Surface::connect(int api) {
ATRACE_CALL();
ALOGV("Surface::connect");
static sp<IProducerListener> listener = new DummyProducerListener();
Mutex::Autolock lock(mMutex);
IGraphicBufferProducer::QueueBufferOutput output;
int err = mGraphicBufferProducer->connect(listener, api, mProducerControlledByApp, &output);
if (err == NO_ERROR) {
uint32_t numPendingBuffers = 0;
output.deflate(&mDefaultWidth, &mDefaultHeight, &mTransformHint,
&numPendingBuffers);
mConsumerRunningBehind = (numPendingBuffers >= 2);
}
if (!err && api == NATIVE_WINDOW_API_CPU) {
mConnectedToCpu = true;
}
return err;
}
int Surface::disconnect(int api) {
ATRACE_CALL();
ALOGV("Surface::disconnect");
Mutex::Autolock lock(mMutex);
freeAllBuffers();
int err = mGraphicBufferProducer->disconnect(api);
if (!err) {
mReqFormat = 0;
mReqWidth = 0;
mReqHeight = 0;
mReqUsage = 0;
mCrop.clear();
mScalingMode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
mTransform = 0;
if (api == NATIVE_WINDOW_API_CPU) {
mConnectedToCpu = false;
}
}
return err;
}
int Surface::setUsage(uint32_t reqUsage)
{
ALOGV("Surface::setUsage");
Mutex::Autolock lock(mMutex);
mReqUsage = reqUsage;
return OK;
}
int Surface::setCrop(Rect const* rect)
{
ATRACE_CALL();
Rect realRect;
if (rect == NULL || rect->isEmpty()) {
realRect.clear();
} else {
realRect = *rect;
}
ALOGV("Surface::setCrop rect=[%d %d %d %d]",
realRect.left, realRect.top, realRect.right, realRect.bottom);
Mutex::Autolock lock(mMutex);
mCrop = realRect;
return NO_ERROR;
}
int Surface::setBufferCount(int bufferCount)
{
ATRACE_CALL();
ALOGV("Surface::setBufferCount");
Mutex::Autolock lock(mMutex);
status_t err = mGraphicBufferProducer->setBufferCount(bufferCount);
ALOGE_IF(err, "IGraphicBufferProducer::setBufferCount(%d) returned %s",
bufferCount, strerror(-err));
if (err == NO_ERROR) {
freeAllBuffers();
}
return err;
}
int Surface::setBuffersDimensions(int w, int h)
{
ATRACE_CALL();
ALOGV("Surface::setBuffersDimensions");
if (w<0 || h<0)
return BAD_VALUE;
if ((w && !h) || (!w && h))
return BAD_VALUE;
Mutex::Autolock lock(mMutex);
mReqWidth = w;
mReqHeight = h;
return NO_ERROR;
}
int Surface::setBuffersUserDimensions(int w, int h)
{
ATRACE_CALL();
ALOGV("Surface::setBuffersUserDimensions");
if (w<0 || h<0)
return BAD_VALUE;
if ((w && !h) || (!w && h))
return BAD_VALUE;
Mutex::Autolock lock(mMutex);
mUserWidth = w;
mUserHeight = h;
return NO_ERROR;
}
int Surface::setBuffersFormat(int format)
{
ALOGV("Surface::setBuffersFormat");
if (format<0)
return BAD_VALUE;
Mutex::Autolock lock(mMutex);
mReqFormat = format;
return NO_ERROR;
}
int Surface::setScalingMode(int mode)
{
ATRACE_CALL();
ALOGV("Surface::setScalingMode(%d)", mode);
switch (mode) {
case NATIVE_WINDOW_SCALING_MODE_FREEZE:
case NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW:
case NATIVE_WINDOW_SCALING_MODE_SCALE_CROP:
break;
default:
ALOGE("unknown scaling mode: %d", mode);
return BAD_VALUE;
}
Mutex::Autolock lock(mMutex);
mScalingMode = mode;
return NO_ERROR;
}
int Surface::setBuffersTransform(int transform)
{
ATRACE_CALL();
ALOGV("Surface::setBuffersTransform");
Mutex::Autolock lock(mMutex);
mTransform = transform;
return NO_ERROR;
}
int Surface::setBuffersTimestamp(int64_t timestamp)
{
ALOGV("Surface::setBuffersTimestamp");
Mutex::Autolock lock(mMutex);
mTimestamp = timestamp;
return NO_ERROR;
}
void Surface::freeAllBuffers() {
for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
mSlots[i].buffer = 0;
}
}
// ----------------------------------------------------------------------
// the lock/unlock APIs must be used from the same thread
static status_t copyBlt(
const sp<GraphicBuffer>& dst,
const sp<GraphicBuffer>& src,
const Region& reg)
{
// src and dst with, height and format must be identical. no verification
// is done here.
status_t err;
uint8_t const * src_bits = NULL;
err = src->lock(GRALLOC_USAGE_SW_READ_OFTEN, reg.bounds(), (void**)&src_bits);
ALOGE_IF(err, "error locking src buffer %s", strerror(-err));
uint8_t* dst_bits = NULL;
err = dst->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, reg.bounds(), (void**)&dst_bits);
ALOGE_IF(err, "error locking dst buffer %s", strerror(-err));
Region::const_iterator head(reg.begin());
Region::const_iterator tail(reg.end());
if (head != tail && src_bits && dst_bits) {
const size_t bpp = bytesPerPixel(src->format);
const size_t dbpr = dst->stride * bpp;
const size_t sbpr = src->stride * bpp;
while (head != tail) {
const Rect& r(*head++);
ssize_t h = r.height();
if (h <= 0) continue;
size_t size = r.width() * bpp;
uint8_t const * s = src_bits + (r.left + src->stride * r.top) * bpp;
uint8_t * d = dst_bits + (r.left + dst->stride * r.top) * bpp;
if (dbpr==sbpr && size==sbpr) {
size *= h;
h = 1;
}
do {
memcpy(d, s, size);
d += dbpr;
s += sbpr;
} while (--h > 0);
}
}
if (src_bits)
src->unlock();
if (dst_bits)
dst->unlock();
return err;
}
// ----------------------------------------------------------------------------
status_t Surface::lock(
ANativeWindow_Buffer* outBuffer, ARect* inOutDirtyBounds)
{
if (mLockedBuffer != 0) {
ALOGE("Surface::lock failed, already locked");
return INVALID_OPERATION;
}
if (!mConnectedToCpu) {
int err = Surface::connect(NATIVE_WINDOW_API_CPU);
if (err) {
return err;
}
// we're intending to do software rendering from this point
setUsage(GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN);
}
ANativeWindowBuffer* out;
int fenceFd = -1;
status_t err = dequeueBuffer(&out, &fenceFd);
ALOGE_IF(err, "dequeueBuffer failed (%s)", strerror(-err));
if (err == NO_ERROR) {
sp<GraphicBuffer> backBuffer(GraphicBuffer::getSelf(out));
sp<Fence> fence(new Fence(fenceFd));
err = fence->waitForever("Surface::lock");
if (err != OK) {
ALOGE("Fence::wait failed (%s)", strerror(-err));
cancelBuffer(out, fenceFd);
return err;
}
const Rect bounds(backBuffer->width, backBuffer->height);
Region newDirtyRegion;
if (inOutDirtyBounds) {
newDirtyRegion.set(static_cast<Rect const&>(*inOutDirtyBounds));
newDirtyRegion.andSelf(bounds);
} else {
newDirtyRegion.set(bounds);
}
// figure out if we can copy the frontbuffer back
const sp<GraphicBuffer>& frontBuffer(mPostedBuffer);
const bool canCopyBack = (frontBuffer != 0 &&
backBuffer->width == frontBuffer->width &&
backBuffer->height == frontBuffer->height &&
backBuffer->format == frontBuffer->format);
if (canCopyBack) {
// copy the area that is invalid and not repainted this round
const Region copyback(mDirtyRegion.subtract(newDirtyRegion));
if (!copyback.isEmpty())
copyBlt(backBuffer, frontBuffer, copyback);
} else {
// if we can't copy-back anything, modify the user's dirty
// region to make sure they redraw the whole buffer
newDirtyRegion.set(bounds);
mDirtyRegion.clear();
Mutex::Autolock lock(mMutex);
for (size_t i=0 ; i<NUM_BUFFER_SLOTS ; i++) {
mSlots[i].dirtyRegion.clear();
}
}
{ // scope for the lock
Mutex::Autolock lock(mMutex);
int backBufferSlot(getSlotFromBufferLocked(backBuffer.get()));
if (backBufferSlot >= 0) {
Region& dirtyRegion(mSlots[backBufferSlot].dirtyRegion);
mDirtyRegion.subtract(dirtyRegion);
dirtyRegion = newDirtyRegion;
}
}
mDirtyRegion.orSelf(newDirtyRegion);
if (inOutDirtyBounds) {
*inOutDirtyBounds = newDirtyRegion.getBounds();
}
void* vaddr;
status_t res = backBuffer->lock(
GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
newDirtyRegion.bounds(), &vaddr);
ALOGW_IF(res, "failed locking buffer (handle = %p)",
backBuffer->handle);
if (res != 0) {
err = INVALID_OPERATION;
} else {
mLockedBuffer = backBuffer;
outBuffer->width = backBuffer->width;
outBuffer->height = backBuffer->height;
outBuffer->stride = backBuffer->stride;
outBuffer->format = backBuffer->format;
outBuffer->bits = vaddr;
}
}
return err;
}
status_t Surface::unlockAndPost()
{
if (mLockedBuffer == 0) {
ALOGE("Surface::unlockAndPost failed, no locked buffer");
return INVALID_OPERATION;
}
status_t err = mLockedBuffer->unlock();
ALOGE_IF(err, "failed unlocking buffer (%p)", mLockedBuffer->handle);
err = queueBuffer(mLockedBuffer.get(), -1);
ALOGE_IF(err, "queueBuffer (handle=%p) failed (%s)",
mLockedBuffer->handle, strerror(-err));
mPostedBuffer = mLockedBuffer;
mLockedBuffer = 0;
return err;
}
}; // namespace android
Reference in New Issue View Git Blame Copy Permalink