make sure to update a surface's usage bits when it changes, instead of only the first time.
also fixed a few locking issues in Surface and commented how each member is protected.
diff --git a/include/ui/Surface.h b/include/ui/Surface.h
index 4ff0e4a..30ab82f 100644
--- a/include/ui/Surface.h
+++ b/include/ui/Surface.h
@@ -146,16 +146,16 @@
static bool isValid(const sp<Surface>& surface) {
return (surface != 0) && surface->isValid();
}
- bool isValid() {
- return mToken>=0 && mClient!=0;
- }
+
static bool isSameSurface(
const sp<Surface>& lhs, const sp<Surface>& rhs);
- SurfaceID ID() const { return mToken; }
- uint32_t getFlags() const { return mFlags; }
+
+ bool isValid();
+ SurfaceID ID() const { return mToken; }
+ uint32_t getFlags() const { return mFlags; }
uint32_t getIdentity() const { return mIdentity; }
-
+ // the lock/unlock APIs must be used from the same thread
status_t lock(SurfaceInfo* info, bool blocking = true);
status_t lock(SurfaceInfo* info, Region* dirty, bool blocking = true);
status_t unlockAndPost();
@@ -175,14 +175,18 @@
friend class SurfaceComposerClient;
friend class SurfaceControl;
+
// camera and camcorder need access to the ISurface binder interface for preview
friend class Camera;
friend class MediaRecorder;
// mediaplayer needs access to ISurface for display
friend class MediaPlayer;
- friend class Test;
friend class IOMX;
- const sp<ISurface>& getISurface() const { return mSurface; }
+ // this is just to be able to write some unit tests
+ friend class Test;
+
+ sp<SurfaceComposerClient> getClient() const;
+ sp<ISurface> getISurface() const;
status_t getBufferLocked(int index, int usage);
@@ -210,24 +214,38 @@
status_t queueBuffer(const sp<SurfaceBuffer>& buffer);
- alloc_device_t* mAllocDevice;
+ void setUsage(uint32_t reqUsage);
+
+ // constants
sp<SurfaceComposerClient> mClient;
sp<ISurface> mSurface;
- sp<SurfaceBuffer> mBuffers[2];
- sp<SurfaceBuffer> mLockedBuffer;
SurfaceID mToken;
uint32_t mIdentity;
- uint32_t mWidth;
- uint32_t mHeight;
- uint32_t mUsage;
PixelFormat mFormat;
uint32_t mFlags;
- mutable Region mDirtyRegion;
- mutable Region mOldDirtyRegion;
- mutable uint8_t mBackbufferIndex;
- mutable Mutex mSurfaceLock;
- Rect mSwapRectangle;
BufferMapper& mBufferMapper;
+
+ // protected by mSurfaceLock
+ Rect mSwapRectangle;
+ uint32_t mUsage;
+ bool mUsageChanged;
+
+ // protected by mSurfaceLock. These are also used from lock/unlock
+ // but in that case, they must be called form the same thread.
+ sp<SurfaceBuffer> mBuffers[2];
+ mutable Region mDirtyRegion;
+ mutable uint8_t mBackbufferIndex;
+
+ // must be used from the lock/unlock thread
+ sp<SurfaceBuffer> mLockedBuffer;
+ mutable Region mOldDirtyRegion;
+
+ // query() must be called from dequeueBuffer() thread
+ uint32_t mWidth;
+ uint32_t mHeight;
+
+ // Inherently thread-safe
+ mutable Mutex mSurfaceLock;
};
}; // namespace android
diff --git a/libs/ui/Surface.cpp b/libs/ui/Surface.cpp
index 2b6905f..f6792c4 100644
--- a/libs/ui/Surface.cpp
+++ b/libs/ui/Surface.cpp
@@ -382,9 +382,9 @@
Surface::Surface(const sp<SurfaceControl>& surface)
: mClient(surface->mClient), mSurface(surface->mSurface),
mToken(surface->mToken), mIdentity(surface->mIdentity),
- mWidth(surface->mWidth), mHeight(surface->mHeight),
mFormat(surface->mFormat), mFlags(surface->mFlags),
- mBufferMapper(BufferMapper::get())
+ mBufferMapper(BufferMapper::get()),
+ mWidth(surface->mWidth), mHeight(surface->mHeight)
{
init();
}
@@ -426,9 +426,9 @@
const_cast<uint32_t&>(android_native_window_t::flags) = 0;
// be default we request a hardware surface
mUsage = GRALLOC_USAGE_HW_RENDER;
+ mUsageChanged = true;
}
-
Surface::~Surface()
{
// this is a client-side operation, the surface is destroyed, unmap
@@ -446,11 +446,24 @@
IPCThreadState::self()->flushCommands();
}
+sp<SurfaceComposerClient> Surface::getClient() const {
+ return mClient;
+}
+
+sp<ISurface> Surface::getISurface() const {
+ return mSurface;
+}
+
+bool Surface::isValid() {
+ return mToken>=0 && mClient!=0;
+}
+
status_t Surface::validate(per_client_cblk_t const* cblk) const
{
+ sp<SurfaceComposerClient> client(getClient());
if (mToken<0 || mClient==0) {
LOGE("invalid token (%d, identity=%u) or client (%p)",
- mToken, mIdentity, mClient.get());
+ mToken, mIdentity, client.get());
return NO_INIT;
}
if (cblk == 0) {
@@ -477,6 +490,7 @@
{
if (lhs == 0 || rhs == 0)
return false;
+
return lhs->mSurface->asBinder() == rhs->mSurface->asBinder();
}
@@ -532,10 +546,9 @@
{
android_native_buffer_t* out;
status_t err = dequeueBuffer(&out);
- *buffer = SurfaceBuffer::getSelf(out);
- // reset the width/height with the what we get from the buffer
- mWidth = uint32_t(out->width);
- mHeight = uint32_t(out->height);
+ if (err == NO_ERROR) {
+ *buffer = SurfaceBuffer::getSelf(out);
+ }
return err;
}
@@ -557,7 +570,8 @@
Mutex::Autolock _l(mSurfaceLock);
- per_client_cblk_t* const cblk = mClient->mControl;
+ sp<SurfaceComposerClient> client(getClient());
+ per_client_cblk_t* const cblk = client->mControl;
status_t err = validate(cblk);
if (err != NO_ERROR)
return err;
@@ -572,14 +586,17 @@
mBackbufferIndex = backIdx;
layer_cblk_t* const lcblk = &(cblk->layers[index]);
-
volatile const surface_info_t* const back = lcblk->surface + backIdx;
- if (back->flags & surface_info_t::eNeedNewBuffer) {
+ if ((back->flags & surface_info_t::eNeedNewBuffer) || mUsageChanged) {
+ mUsageChanged = false;
err = getBufferLocked(backIdx, mUsage);
}
if (err == NO_ERROR) {
const sp<SurfaceBuffer>& backBuffer(mBuffers[backIdx]);
+ // reset the width/height with the what we get from the buffer
+ mWidth = uint32_t(backBuffer->width);
+ mHeight = uint32_t(backBuffer->height);
mDirtyRegion.set(backBuffer->width, backBuffer->height);
*buffer = backBuffer.get();
}
@@ -591,7 +608,8 @@
{
Mutex::Autolock _l(mSurfaceLock);
- per_client_cblk_t* const cblk = mClient->mControl;
+ sp<SurfaceComposerClient> client(getClient());
+ per_client_cblk_t* const cblk = client->mControl;
status_t err = validate(cblk);
if (err != NO_ERROR)
return err;
@@ -604,7 +622,8 @@
{
Mutex::Autolock _l(mSurfaceLock);
- per_client_cblk_t* const cblk = mClient->mControl;
+ sp<SurfaceComposerClient> client(getClient());
+ per_client_cblk_t* const cblk = client->mControl;
status_t err = validate(cblk);
if (err != NO_ERROR)
return err;
@@ -620,7 +639,7 @@
uint32_t newstate = cblk->unlock_layer_and_post(size_t(index));
if (!(newstate & eNextFlipPending))
- mClient->signalServer();
+ client->signalServer();
return NO_ERROR;
}
@@ -646,7 +665,7 @@
int res = NO_ERROR;
switch (operation) {
case NATIVE_WINDOW_SET_USAGE:
- mUsage = va_arg(args, int);
+ setUsage( va_arg(args, int) );
break;
default:
res = NAME_NOT_FOUND;
@@ -655,6 +674,15 @@
return res;
}
+void Surface::setUsage(uint32_t reqUsage)
+{
+ Mutex::Autolock _l(mSurfaceLock);
+ if (mUsage != reqUsage) {
+ mUsageChanged = true;
+ mUsage = reqUsage;
+ }
+}
+
// ----------------------------------------------------------------------------
status_t Surface::lock(SurfaceInfo* info, bool blocking) {
@@ -663,11 +691,9 @@
status_t Surface::lock(SurfaceInfo* other, Region* dirtyIn, bool blocking)
{
- // FIXME: needs some locking here
-
// we're intending to do software rendering from this point
- mUsage = GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN;
-
+ setUsage(GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN);
+
sp<SurfaceBuffer> backBuffer;
status_t err = dequeueBuffer(&backBuffer);
if (err == NO_ERROR) {
@@ -679,7 +705,8 @@
Region scratch(bounds);
Region& newDirtyRegion(dirtyIn ? *dirtyIn : scratch);
- per_client_cblk_t* const cblk = mClient->mControl;
+ sp<SurfaceComposerClient> client(getClient());
+ per_client_cblk_t* const cblk = client->mControl;
layer_cblk_t* const lcblk = &(cblk->layers[SurfaceID(mToken)]);
volatile const surface_info_t* const back = lcblk->surface + mBackbufferIndex;
if (back->flags & surface_info_t::eBufferDirty) {
@@ -725,8 +752,6 @@
status_t Surface::unlockAndPost()
{
- // FIXME: needs some locking here
-
if (mLockedBuffer == 0)
return BAD_VALUE;
@@ -753,13 +778,17 @@
}
void Surface::setSwapRectangle(const Rect& r) {
+ Mutex::Autolock _l(mSurfaceLock);
mSwapRectangle = r;
}
status_t Surface::getBufferLocked(int index, int usage)
{
+ sp<ISurface> s(mSurface);
+ if (s == 0) return NO_INIT;
+
status_t err = NO_MEMORY;
- sp<SurfaceBuffer> buffer = mSurface->getBuffer(usage);
+ sp<SurfaceBuffer> buffer = s->getBuffer(usage);
LOGE_IF(buffer==0, "ISurface::getBuffer() returned NULL");
if (buffer != 0) {
sp<SurfaceBuffer>& currentBuffer(mBuffers[index]);