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replicant-frameworks_native/libs/gui/Surface.cpp

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/*
* 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 <utils/NativeHandle.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;
mDataSpace = HAL_DATASPACE_UNKNOWN;
mCrop.clear();
mScalingMode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
mTransform = 0;
mStickyTransform = 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);
}
void Surface::allocateBuffers() {
uint32_t reqWidth = mReqWidth ? mReqWidth : mUserWidth;
uint32_t reqHeight = mReqHeight ? mReqHeight : mUserHeight;
mGraphicBufferProducer->allocateBuffers(mSwapIntervalZero, reqWidth,
reqHeight, mReqFormat, mReqUsage);
}
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");
uint32_t reqWidth;
uint32_t reqHeight;
bool swapIntervalZero;
PixelFormat reqFormat;
uint32_t reqUsage;
{
Mutex::Autolock lock(mMutex);
reqWidth = mReqWidth ? mReqWidth : mUserWidth;
reqHeight = 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,
reqWidth, reqHeight, reqFormat, reqUsage);
if (result < 0) {
ALOGV("dequeueBuffer: IGraphicBufferProducer::dequeueBuffer(%d, %d, %d, %d, %d)"
"failed: %d", swapIntervalZero, reqWidth, reqHeight, 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);
mGraphicBufferProducer->cancelBuffer(buf, fence);
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 {
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,
mDataSpace, crop, mScalingMode, mTransform ^ mStickyTransform,
mSwapIntervalZero, fence, mStickyTransform);
status_t err = mGraphicBufferProducer->queueBuffer(i, input, &output);
if (err != OK) {
ALOGE("queueBuffer: error queuing buffer to SurfaceTexture, %d", err);
}
uint32_t numPendingBuffers = 0;
uint32_t hint = 0;
output.deflate(&mDefaultWidth, &mDefaultHeight, &hint,
&numPendingBuffers);
// Disable transform hint if sticky transform is set.
if (mStickyTransform == 0) {
mTransformHint = hint;
}
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 = static_cast<int>(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 = static_cast<int>(
mUserWidth ? mUserWidth : mDefaultWidth);
return NO_ERROR;
case NATIVE_WINDOW_DEFAULT_HEIGHT:
*value = static_cast<int>(
mUserHeight ? mUserHeight : mDefaultHeight);
return NO_ERROR;
case NATIVE_WINDOW_TRANSFORM_HINT:
*value = static_cast<int>(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_STICKY_TRANSFORM:
res = dispatchSetBuffersStickyTransform(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;
case NATIVE_WINDOW_SET_SIDEBAND_STREAM:
res = dispatchSetSidebandStream(args);
break;
case NATIVE_WINDOW_SET_BUFFERS_DATASPACE:
res = dispatchSetBuffersDataSpace(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(static_cast<uint32_t>(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(static_cast<int32_t>(bufferCount));
}
int Surface::dispatchSetBuffersGeometry(va_list args) {
uint32_t width = va_arg(args, uint32_t);
uint32_t height = va_arg(args, uint32_t);
PixelFormat format = va_arg(args, PixelFormat);
int err = setBuffersDimensions(width, height);
if (err != 0) {
return err;
}
return setBuffersFormat(format);
}
int Surface::dispatchSetBuffersDimensions(va_list args) {
uint32_t width = va_arg(args, uint32_t);
uint32_t height = va_arg(args, uint32_t);
return setBuffersDimensions(width, height);
}
int Surface::dispatchSetBuffersUserDimensions(va_list args) {
uint32_t width = va_arg(args, uint32_t);
uint32_t height = va_arg(args, uint32_t);
return setBuffersUserDimensions(width, height);
}
int Surface::dispatchSetBuffersFormat(va_list args) {
PixelFormat format = va_arg(args, PixelFormat);
return setBuffersFormat(format);
}
int Surface::dispatchSetScalingMode(va_list args) {
int mode = va_arg(args, int);
return setScalingMode(mode);
}
int Surface::dispatchSetBuffersTransform(va_list args) {
uint32_t transform = va_arg(args, uint32_t);
return setBuffersTransform(transform);
}
int Surface::dispatchSetBuffersStickyTransform(va_list args) {
uint32_t transform = va_arg(args, uint32_t);
return setBuffersStickyTransform(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::dispatchSetSidebandStream(va_list args) {
native_handle_t* sH = va_arg(args, native_handle_t*);
sp<NativeHandle> sidebandHandle = NativeHandle::create(sH, false);
setSidebandStream(sidebandHandle);
return OK;
}
int Surface::dispatchSetBuffersDataSpace(va_list args) {
android_dataspace dataspace =
static_cast<android_dataspace>(va_arg(args, int));
return setBuffersDataSpace(dataspace);
}
int Surface::connect(int api) {
static sp<IProducerListener> listener = new DummyProducerListener();
return connect(api, listener);
}
int Surface::connect(int api, const sp<IProducerListener>& listener) {
ATRACE_CALL();
ALOGV("Surface::connect");
Mutex::Autolock lock(mMutex);
IGraphicBufferProducer::QueueBufferOutput output;
int err = mGraphicBufferProducer->connect(listener, api, mProducerControlledByApp, &output);
if (err == NO_ERROR) {
uint32_t numPendingBuffers = 0;
uint32_t hint = 0;
output.deflate(&mDefaultWidth, &mDefaultHeight, &hint,
&numPendingBuffers);
// Disable transform hint if sticky transform is set.
if (mStickyTransform == 0) {
mTransformHint = hint;
}
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;
mStickyTransform = 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(uint32_t width, uint32_t height)
{
ATRACE_CALL();
ALOGV("Surface::setBuffersDimensions");
if ((width && !height) || (!width && height))
return BAD_VALUE;
Mutex::Autolock lock(mMutex);
mReqWidth = width;
mReqHeight = height;
return NO_ERROR;
}
int Surface::setBuffersUserDimensions(uint32_t width, uint32_t height)
{
ATRACE_CALL();
ALOGV("Surface::setBuffersUserDimensions");
if ((width && !height) || (!width && height))
return BAD_VALUE;
Mutex::Autolock lock(mMutex);
mUserWidth = width;
mUserHeight = height;
return NO_ERROR;
}
int Surface::setBuffersFormat(PixelFormat format)
{
ALOGV("Surface::setBuffersFormat");
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(uint32_t transform)
{
ATRACE_CALL();
ALOGV("Surface::setBuffersTransform");
Mutex::Autolock lock(mMutex);
mTransform = transform;
return NO_ERROR;
}
int Surface::setBuffersStickyTransform(uint32_t transform)
{
ATRACE_CALL();
ALOGV("Surface::setBuffersStickyTransform");
Mutex::Autolock lock(mMutex);
mStickyTransform = transform;
return NO_ERROR;
}
int Surface::setBuffersTimestamp(int64_t timestamp)
{
ALOGV("Surface::setBuffersTimestamp");
Mutex::Autolock lock(mMutex);
mTimestamp = timestamp;
return NO_ERROR;
}
int Surface::setBuffersDataSpace(android_dataspace dataSpace)
{
ALOGV("Surface::setBuffersDataSpace");
Mutex::Autolock lock(mMutex);
mDataSpace = dataSpace;
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* src_bits = NULL;
err = src->lock(GRALLOC_USAGE_SW_READ_OFTEN, reg.bounds(),
reinterpret_cast<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(),
reinterpret_cast<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 = static_cast<uint32_t>(dst->stride) * bpp;
const size_t sbpr = static_cast<uint32_t>(src->stride) * bpp;
while (head != tail) {
const Rect& r(*head++);
int32_t h = r.height();
if (h <= 0) continue;
size_t size = static_cast<uint32_t>(r.width()) * bpp;
uint8_t const * s = src_bits +
static_cast<uint32_t>(r.left + src->stride * r.top) * bpp;
uint8_t * d = dst_bits +
static_cast<uint32_t>(r.left + dst->stride * r.top) * bpp;
if (dbpr==sbpr && size==sbpr) {
size *= static_cast<size_t>(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));
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->lockAsync(
GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
newDirtyRegion.bounds(), &vaddr, fenceFd);
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;
}
int fd = -1;
status_t err = mLockedBuffer->unlockAsync(&fd);
ALOGE_IF(err, "failed unlocking buffer (%p)", mLockedBuffer->handle);
err = queueBuffer(mLockedBuffer.get(), fd);
ALOGE_IF(err, "queueBuffer (handle=%p) failed (%s)",
mLockedBuffer->handle, strerror(-err));
mPostedBuffer = mLockedBuffer;
mLockedBuffer = 0;
return err;
}
}; // namespace android
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