Fix remote GraphicBuffer allocation in SurfaceFlinger.
This change fixes a horrible hack that I did to allow application
processes to create GraphicBuffer objects by making a binder call to
SurfaceFlinger. This change introduces a new binder interface
specifically for doing this, and does it in such a way that
SurfaceFlinger will maintain a reference to the buffers until the app is
done with them.
Change-Id: Icb240397c6c206d7f69124c1497a829f051cb49b
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index c982ea5..967ff1a 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -144,6 +144,11 @@
return bclient;
}
+sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc()
+{
+ sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc());
+ return gba;
+}
const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const
{
@@ -2267,25 +2272,6 @@
// ---------------------------------------------------------------------------
-sp<GraphicBuffer> SurfaceFlinger::createGraphicBuffer(uint32_t w, uint32_t h,
- PixelFormat format, uint32_t usage) const {
- // XXX: HACK HACK HACK!!! This should NOT be static, but it is to fix a
- // race between SurfaceFlinger unref'ing the buffer and the client ref'ing
- // it.
- static sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage));
- status_t err = graphicBuffer->initCheck();
- if (err != 0) {
- LOGE("createGraphicBuffer: init check failed: %d", err);
- return 0;
- } else if (graphicBuffer->handle == 0) {
- LOGE("createGraphicBuffer: unable to create GraphicBuffer");
- return 0;
- }
- return graphicBuffer;
-}
-
-// ---------------------------------------------------------------------------
-
Client::Client(const sp<SurfaceFlinger>& flinger)
: mFlinger(flinger), mNameGenerator(1)
{
@@ -2465,6 +2451,39 @@
// ---------------------------------------------------------------------------
+GraphicBufferAlloc::GraphicBufferAlloc() {}
+
+GraphicBufferAlloc::~GraphicBufferAlloc() {}
+
+sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t w, uint32_t h,
+ PixelFormat format, uint32_t usage) {
+ sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage));
+ status_t err = graphicBuffer->initCheck();
+ if (err != 0) {
+ LOGE("createGraphicBuffer: init check failed: %d", err);
+ return 0;
+ } else if (graphicBuffer->handle == 0) {
+ LOGE("createGraphicBuffer: unable to create GraphicBuffer");
+ return 0;
+ }
+ Mutex::Autolock _l(mLock);
+ mBuffers.add(graphicBuffer);
+ return graphicBuffer;
+}
+
+void GraphicBufferAlloc::freeAllGraphicBuffersExcept(int bufIdx) {
+ Mutex::Autolock _l(mLock);
+ if (0 <= bufIdx && bufIdx < mBuffers.size()) {
+ sp<GraphicBuffer> b(mBuffers[bufIdx]);
+ mBuffers.clear();
+ mBuffers.add(b);
+ } else {
+ mBuffers.clear();
+ }
+}
+
+// ---------------------------------------------------------------------------
+
GraphicPlane::GraphicPlane()
: mHw(0)
{