BufferQueue improvements and APIs changes

this is the first step of a series of improvements to
BufferQueue. A few things happen in this change:

- setSynchronousMode() goes away as well as the SynchronousModeAllowed flag
- BufferQueue now defaults to (what used to be) synchronous mode
- a new "controlled by app" flag is passed when creating consumers and producers
  those flags are used to put the BufferQueue in a mode where it
  will never block if both flags are set. This is achieved by:
  - returning an error from dequeueBuffer() if it would block
  - making sure a buffer is always available by replacing
    the previous buffer with the new one in queueBuffer()
    (note: this is similar to what asynchrnous mode used to be)

Note: in this change EGL's swap-interval 0 is broken; this will be
fixed in another change.

Change-Id: I691f9507d6e2e158287e3039f2a79a4d4434211d
diff --git a/libs/gui/tests/SurfaceTextureClient_test.cpp b/libs/gui/tests/SurfaceTextureClient_test.cpp
index 46bcb22..9908cc9 100644
--- a/libs/gui/tests/SurfaceTextureClient_test.cpp
+++ b/libs/gui/tests/SurfaceTextureClient_test.cpp
@@ -338,7 +338,7 @@
 
 TEST_F(SurfaceTextureClientTest, SurfaceTextureTooManyUpdateTexImage) {
     android_native_buffer_t* buf[3];
-    ASSERT_EQ(OK, mST->setSynchronousMode(false));
+    ASSERT_EQ(OK, mANW->setSwapInterval(mANW.get(), 0));
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 4));
 
     ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
@@ -346,7 +346,7 @@
     EXPECT_EQ(OK, mST->updateTexImage());
     EXPECT_EQ(OK, mST->updateTexImage());
 
-    ASSERT_EQ(OK, mST->setSynchronousMode(true));
+    ASSERT_EQ(OK, mANW->setSwapInterval(mANW.get(), 1));
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 3));
 
     ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
@@ -361,7 +361,7 @@
 
 TEST_F(SurfaceTextureClientTest, SurfaceTextureSyncModeSlowRetire) {
     android_native_buffer_t* buf[3];
-    ASSERT_EQ(OK, mST->setSynchronousMode(true));
+    ASSERT_EQ(OK, mANW->setSwapInterval(mANW.get(), 1));
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 4));
     ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
     ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[1]));
@@ -382,7 +382,7 @@
 
 TEST_F(SurfaceTextureClientTest, SurfaceTextureSyncModeFastRetire) {
     android_native_buffer_t* buf[3];
-    ASSERT_EQ(OK, mST->setSynchronousMode(true));
+    ASSERT_EQ(OK, mANW->setSwapInterval(mANW.get(), 1));
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 4));
     ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
     ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[1]));
@@ -403,7 +403,7 @@
 
 TEST_F(SurfaceTextureClientTest, SurfaceTextureSyncModeDQQR) {
     android_native_buffer_t* buf[3];
-    ASSERT_EQ(OK, mST->setSynchronousMode(true));
+    ASSERT_EQ(OK, mANW->setSwapInterval(mANW.get(), 1));
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 3));
 
     ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
@@ -429,7 +429,7 @@
 TEST_F(SurfaceTextureClientTest, DISABLED_SurfaceTextureSyncModeDequeueCurrent) {
     android_native_buffer_t* buf[3];
     android_native_buffer_t* firstBuf;
-    ASSERT_EQ(OK, mST->setSynchronousMode(true));
+    ASSERT_EQ(OK, mANW->setSwapInterval(mANW.get(), 1));
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 3));
     ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &firstBuf));
     ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), firstBuf, -1));
@@ -449,7 +449,7 @@
 
 TEST_F(SurfaceTextureClientTest, SurfaceTextureSyncModeMinUndequeued) {
     android_native_buffer_t* buf[3];
-    ASSERT_EQ(OK, mST->setSynchronousMode(true));
+    ASSERT_EQ(OK, mANW->setSwapInterval(mANW.get(), 1));
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 3));
 
     // We should be able to dequeue all the buffers before we've queued mANWy.
@@ -528,7 +528,7 @@
     };
 
     android_native_buffer_t* buf[3];
-    ASSERT_EQ(OK, mST->setSynchronousMode(true));
+    ASSERT_EQ(OK, mANW->setSwapInterval(mANW.get(), 1));
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 3));
     // dequeue/queue/update so we have a current buffer
     ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));