Merge "s/w rendered apps can now use n-buffering (n>2)"
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commit
82ca93bf66
@ -26,6 +26,7 @@
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#include <utils/RefBase.h>
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#include <utils/threads.h>
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#include <utils/KeyedVector.h>
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struct ANativeWindow_Buffer;
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@ -113,6 +114,11 @@ private:
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void freeAllBuffers();
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int getSlotFromBufferLocked(android_native_buffer_t* buffer) const;
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struct BufferSlot {
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sp<GraphicBuffer> buffer;
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Region dirtyRegion;
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};
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// mSurfaceTexture is the interface to the surface texture server. All
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// operations on the surface texture client ultimately translate into
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// interactions with the server using this interface.
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@ -124,7 +130,7 @@ private:
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// slot that has not yet been used. The buffer allocated to a slot will also
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// be replaced if the requested buffer usage or geometry differs from that
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// of the buffer allocated to a slot.
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sp<GraphicBuffer> mSlots[NUM_BUFFER_SLOTS];
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BufferSlot mSlots[NUM_BUFFER_SLOTS];
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// mReqWidth is the buffer width that will be requested at the next dequeue
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// operation. It is initialized to 1.
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@ -189,8 +195,10 @@ private:
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// must be used from the lock/unlock thread
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sp<GraphicBuffer> mLockedBuffer;
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sp<GraphicBuffer> mPostedBuffer;
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mutable Region mOldDirtyRegion;
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bool mConnectedToCpu;
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// must be accessed from lock/unlock thread only
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Region mDirtyRegion;
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};
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}; // namespace android
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@ -171,7 +171,7 @@ int SurfaceTextureClient::dequeueBuffer(android_native_buffer_t** buffer) {
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result);
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return result;
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}
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sp<GraphicBuffer>& gbuf(mSlots[buf]);
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sp<GraphicBuffer>& gbuf(mSlots[buf].buffer);
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if (result & ISurfaceTexture::RELEASE_ALL_BUFFERS) {
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freeAllBuffers();
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}
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@ -204,7 +204,8 @@ int SurfaceTextureClient::getSlotFromBufferLocked(
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android_native_buffer_t* buffer) const {
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bool dumpedState = false;
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for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
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if (mSlots[i] != NULL && mSlots[i]->handle == buffer->handle) {
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if (mSlots[i].buffer != NULL &&
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mSlots[i].buffer->handle == buffer->handle) {
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return i;
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}
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}
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@ -586,7 +587,7 @@ int SurfaceTextureClient::setBuffersTimestamp(int64_t timestamp)
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void SurfaceTextureClient::freeAllBuffers() {
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for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
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mSlots[i] = 0;
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mSlots[i].buffer = 0;
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}
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}
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@ -691,19 +692,32 @@ status_t SurfaceTextureClient::lock(
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if (canCopyBack) {
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// copy the area that is invalid and not repainted this round
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const Region copyback(mOldDirtyRegion.subtract(newDirtyRegion));
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const Region copyback(mDirtyRegion.subtract(newDirtyRegion));
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if (!copyback.isEmpty())
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copyBlt(backBuffer, frontBuffer, copyback);
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} else {
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// if we can't copy-back anything, modify the user's dirty
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// region to make sure they redraw the whole buffer
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newDirtyRegion.set(bounds);
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mDirtyRegion.clear();
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Mutex::Autolock lock(mMutex);
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for (size_t i=0 ; i<NUM_BUFFER_SLOTS ; i++) {
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mSlots[i].dirtyRegion.clear();
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}
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}
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// keep track of the are of the buffer that is "clean"
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// (ie: that will be redrawn)
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mOldDirtyRegion = newDirtyRegion;
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{ // scope for the lock
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Mutex::Autolock lock(mMutex);
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int backBufferSlot(getSlotFromBufferLocked(backBuffer.get()));
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if (backBufferSlot >= 0) {
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Region& dirtyRegion(mSlots[backBufferSlot].dirtyRegion);
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mDirtyRegion.subtract(dirtyRegion);
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dirtyRegion = newDirtyRegion;
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}
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}
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mDirtyRegion.orSelf(newDirtyRegion);
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if (inOutDirtyBounds) {
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*inOutDirtyBounds = newDirtyRegion.getBounds();
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}
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@ -40,10 +40,6 @@ status_t SurfaceTextureLayer::connect(int api,
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outWidth, outHeight, outTransform);
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if (err == NO_ERROR) {
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switch(api) {
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case NATIVE_WINDOW_API_CPU:
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// SurfaceTextureClient supports only 2 buffers for CPU connections
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this->setBufferCountServer(2);
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break;
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case NATIVE_WINDOW_API_MEDIA:
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case NATIVE_WINDOW_API_CAMERA:
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// Camera preview and videos are rate-limited on the producer
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