move lock/unlock implementaion outside of Surface into SurfaceTextureClient
This makes ANativeWindow_lock/ANativeWindow_unlockAndPost work
with ANativeWindows implemented by Surface and SurfaceTextureClient.
Also, Surface now inherits directly from SurfaceTextureClient.
Bug: 5003724
Change-Id: I9f285877c7bae9a262e9a7af91c2bae78804b2ef
diff --git a/libs/gui/SurfaceTextureClient.cpp b/libs/gui/SurfaceTextureClient.cpp
index f39cabf..d5b7c89 100644
--- a/libs/gui/SurfaceTextureClient.cpp
+++ b/libs/gui/SurfaceTextureClient.cpp
@@ -24,24 +24,45 @@
namespace android {
SurfaceTextureClient::SurfaceTextureClient(
- const sp<ISurfaceTexture>& surfaceTexture):
- mSurfaceTexture(surfaceTexture), mAllocator(0), mReqWidth(0),
- mReqHeight(0), mReqFormat(0), mReqUsage(0),
- mTimestamp(NATIVE_WINDOW_TIMESTAMP_AUTO),
- mQueryWidth(0), mQueryHeight(0), mQueryFormat(0),
- mMutex() {
+ const sp<ISurfaceTexture>& surfaceTexture)
+{
+ SurfaceTextureClient::init();
+ SurfaceTextureClient::setISurfaceTexture(surfaceTexture);
+}
+
+SurfaceTextureClient::SurfaceTextureClient() {
+ SurfaceTextureClient::init();
+}
+
+void SurfaceTextureClient::init() {
// Initialize the ANativeWindow function pointers.
- ANativeWindow::setSwapInterval = setSwapInterval;
- ANativeWindow::dequeueBuffer = dequeueBuffer;
- ANativeWindow::cancelBuffer = cancelBuffer;
- ANativeWindow::lockBuffer = lockBuffer;
- ANativeWindow::queueBuffer = queueBuffer;
- ANativeWindow::query = query;
- ANativeWindow::perform = perform;
+ ANativeWindow::setSwapInterval = hook_setSwapInterval;
+ ANativeWindow::dequeueBuffer = hook_dequeueBuffer;
+ ANativeWindow::cancelBuffer = hook_cancelBuffer;
+ ANativeWindow::lockBuffer = hook_lockBuffer;
+ ANativeWindow::queueBuffer = hook_queueBuffer;
+ ANativeWindow::query = hook_query;
+ ANativeWindow::perform = hook_perform;
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;
+ mQueryWidth = 0;
+ mQueryHeight = 0;
+ mQueryFormat = 0;
+ mConnectedToCpu = false;
+}
+
+void SurfaceTextureClient::setISurfaceTexture(
+ const sp<ISurfaceTexture>& surfaceTexture)
+{
+ mSurfaceTexture = surfaceTexture;
+
// Get a reference to the allocator.
mAllocator = mSurfaceTexture->getAllocator();
}
@@ -50,42 +71,42 @@
return mSurfaceTexture;
}
-int SurfaceTextureClient::setSwapInterval(ANativeWindow* window, int interval) {
+int SurfaceTextureClient::hook_setSwapInterval(ANativeWindow* window, int interval) {
SurfaceTextureClient* c = getSelf(window);
return c->setSwapInterval(interval);
}
-int SurfaceTextureClient::dequeueBuffer(ANativeWindow* window,
+int SurfaceTextureClient::hook_dequeueBuffer(ANativeWindow* window,
ANativeWindowBuffer** buffer) {
SurfaceTextureClient* c = getSelf(window);
return c->dequeueBuffer(buffer);
}
-int SurfaceTextureClient::cancelBuffer(ANativeWindow* window,
+int SurfaceTextureClient::hook_cancelBuffer(ANativeWindow* window,
ANativeWindowBuffer* buffer) {
SurfaceTextureClient* c = getSelf(window);
return c->cancelBuffer(buffer);
}
-int SurfaceTextureClient::lockBuffer(ANativeWindow* window,
+int SurfaceTextureClient::hook_lockBuffer(ANativeWindow* window,
ANativeWindowBuffer* buffer) {
SurfaceTextureClient* c = getSelf(window);
return c->lockBuffer(buffer);
}
-int SurfaceTextureClient::queueBuffer(ANativeWindow* window,
+int SurfaceTextureClient::hook_queueBuffer(ANativeWindow* window,
ANativeWindowBuffer* buffer) {
SurfaceTextureClient* c = getSelf(window);
return c->queueBuffer(buffer);
}
-int SurfaceTextureClient::query(const ANativeWindow* window,
+int SurfaceTextureClient::hook_query(const ANativeWindow* window,
int what, int* value) {
const SurfaceTextureClient* c = getSelf(window);
return c->query(what, value);
}
-int SurfaceTextureClient::perform(ANativeWindow* window, int operation, ...) {
+int SurfaceTextureClient::hook_perform(ANativeWindow* window, int operation, ...) {
va_list args;
va_start(args, operation);
SurfaceTextureClient* c = getSelf(window);
@@ -219,7 +240,6 @@
*value = 0;
return NO_ERROR;
case NATIVE_WINDOW_CONCRETE_TYPE:
- // TODO: this is not needed anymore
*value = NATIVE_WINDOW_SURFACE_TEXTURE_CLIENT;
return NO_ERROR;
}
@@ -260,6 +280,12 @@
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;
default:
res = NAME_NOT_FOUND;
break;
@@ -324,28 +350,37 @@
return setBuffersTimestamp(timestamp);
}
+int SurfaceTextureClient::dispatchLock(va_list args) {
+ ANativeWindow_Buffer* outBuffer = va_arg(args, ANativeWindow_Buffer*);
+ ARect* inOutDirtyBounds = va_arg(args, ARect*);
+ return lock(outBuffer, inOutDirtyBounds);
+}
+
+int SurfaceTextureClient::dispatchUnlockAndPost(va_list args) {
+ return unlockAndPost();
+}
+
+
int SurfaceTextureClient::connect(int api) {
LOGV("SurfaceTextureClient::connect");
Mutex::Autolock lock(mMutex);
- return mSurfaceTexture->connect(api);
+ int err = mSurfaceTexture->connect(api);
+ if (!err && api == NATIVE_WINDOW_API_CPU) {
+ mConnectedToCpu = true;
+ }
+ return err;
}
int SurfaceTextureClient::disconnect(int api) {
LOGV("SurfaceTextureClient::disconnect");
Mutex::Autolock lock(mMutex);
- return mSurfaceTexture->disconnect(api);
+ int err = mSurfaceTexture->disconnect(api);
+ if (!err && api == NATIVE_WINDOW_API_CPU) {
+ mConnectedToCpu = false;
+ }
+ return err;
}
-int SurfaceTextureClient::getConnectedApi() const
-{
- // XXX: This method will be going away shortly, and is currently bogus. It
- // always returns "nothing is connected". It will go away once Surface gets
- // updated to actually connect as the 'CPU' API when locking a buffer.
- Mutex::Autolock lock(mMutex);
- return 0;
-}
-
-
int SurfaceTextureClient::setUsage(uint32_t reqUsage)
{
LOGV("SurfaceTextureClient::setUsage");
@@ -443,4 +478,160 @@
}
}
+// ----------------------------------------------------------------------
+// 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 const * src_bits = NULL;
+ err = src->lock(GRALLOC_USAGE_SW_READ_OFTEN, reg.bounds(), (void**)&src_bits);
+ LOGE_IF(err, "error locking src buffer %s", strerror(-err));
+
+ uint8_t* dst_bits = NULL;
+ err = dst->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, reg.bounds(), (void**)&dst_bits);
+ LOGE_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 = dst->stride * bpp;
+ const size_t sbpr = src->stride * bpp;
+
+ while (head != tail) {
+ const Rect& r(*head++);
+ ssize_t h = r.height();
+ if (h <= 0) continue;
+ size_t size = r.width() * bpp;
+ uint8_t const * s = src_bits + (r.left + src->stride * r.top) * bpp;
+ uint8_t * d = dst_bits + (r.left + dst->stride * r.top) * bpp;
+ if (dbpr==sbpr && size==sbpr) {
+ size *= 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 SurfaceTextureClient::lock(
+ ANativeWindow_Buffer* outBuffer, ARect* inOutDirtyBounds)
+{
+ if (mLockedBuffer != 0) {
+ LOGE("Surface::lock failed, already locked");
+ return INVALID_OPERATION;
+ }
+
+ if (!mConnectedToCpu) {
+ int err = SurfaceTextureClient::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;
+ status_t err = dequeueBuffer(&out);
+ LOGE_IF(err, "dequeueBuffer failed (%s)", strerror(-err));
+ if (err == NO_ERROR) {
+ sp<GraphicBuffer> backBuffer(GraphicBuffer::getSelf(out));
+ err = lockBuffer(backBuffer.get());
+ LOGE_IF(err, "lockBuffer (handle=%p) failed (%s)",
+ backBuffer->handle, strerror(-err));
+ if (err == NO_ERROR) {
+ 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(mOldDirtyRegion.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);
+ }
+
+ // keep track of the are of the buffer that is "clean"
+ // (ie: that will be redrawn)
+ mOldDirtyRegion = newDirtyRegion;
+
+ if (inOutDirtyBounds) {
+ *inOutDirtyBounds = newDirtyRegion.getBounds();
+ }
+
+ void* vaddr;
+ status_t res = backBuffer->lock(
+ GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
+ newDirtyRegion.bounds(), &vaddr);
+
+ LOGW_IF(res, "failed locking buffer (handle = %p)",
+ backBuffer->handle);
+
+ 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 SurfaceTextureClient::unlockAndPost()
+{
+ if (mLockedBuffer == 0) {
+ LOGE("Surface::unlockAndPost failed, no locked buffer");
+ return INVALID_OPERATION;
+ }
+
+ status_t err = mLockedBuffer->unlock();
+ LOGE_IF(err, "failed unlocking buffer (%p)", mLockedBuffer->handle);
+
+ err = queueBuffer(mLockedBuffer.get());
+ LOGE_IF(err, "queueBuffer (handle=%p) failed (%s)",
+ mLockedBuffer->handle, strerror(-err));
+
+ mPostedBuffer = mLockedBuffer;
+ mLockedBuffer = 0;
+ return err;
+}
+
}; // namespace android