auto import from //depot/cupcake/@135843
diff --git a/libs/surfaceflinger/LayerBuffer.cpp b/libs/surfaceflinger/LayerBuffer.cpp
new file mode 100644
index 0000000..00fab70
--- /dev/null
+++ b/libs/surfaceflinger/LayerBuffer.cpp
@@ -0,0 +1,655 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "SurfaceFlinger"
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <math.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+#include <utils/Log.h>
+#include <utils/StopWatch.h>
+
+#include <utils/IPCThreadState.h>
+#include <utils/IServiceManager.h>
+
+#include <ui/PixelFormat.h>
+#include <ui/EGLDisplaySurface.h>
+
+#include "LayerBuffer.h"
+#include "SurfaceFlinger.h"
+#include "VRamHeap.h"
+#include "DisplayHardware/DisplayHardware.h"
+
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+const uint32_t LayerBuffer::typeInfo = LayerBaseClient::typeInfo | 0x20;
+const char* const LayerBuffer::typeID = "LayerBuffer";
+
+// ---------------------------------------------------------------------------
+
+LayerBuffer::LayerBuffer(SurfaceFlinger* flinger, DisplayID display,
+ Client* client, int32_t i)
+ : LayerBaseClient(flinger, display, client, i),
+ mNeedsBlending(false)
+{
+}
+
+LayerBuffer::~LayerBuffer()
+{
+ sp<SurfaceBuffer> s(getClientSurface());
+ if (s != 0) {
+ s->disown();
+ mClientSurface.clear();
+ }
+}
+
+sp<LayerBuffer::SurfaceBuffer> LayerBuffer::getClientSurface() const
+{
+ Mutex::Autolock _l(mLock);
+ return mClientSurface.promote();
+}
+
+sp<LayerBaseClient::Surface> LayerBuffer::getSurface() const
+{
+ sp<SurfaceBuffer> s;
+ Mutex::Autolock _l(mLock);
+ s = mClientSurface.promote();
+ if (s == 0) {
+ s = new SurfaceBuffer(clientIndex(),
+ const_cast<LayerBuffer *>(this));
+ mClientSurface = s;
+ }
+ return s;
+}
+
+bool LayerBuffer::needsBlending() const {
+ return mNeedsBlending;
+}
+
+void LayerBuffer::setNeedsBlending(bool blending) {
+ mNeedsBlending = blending;
+}
+
+void LayerBuffer::postBuffer(ssize_t offset)
+{
+ sp<Source> source(getSource());
+ if (source != 0)
+ source->postBuffer(offset);
+}
+
+void LayerBuffer::unregisterBuffers()
+{
+ sp<Source> source(clearSource());
+ if (source != 0)
+ source->unregisterBuffers();
+}
+
+uint32_t LayerBuffer::doTransaction(uint32_t flags)
+{
+ sp<Source> source(getSource());
+ if (source != 0)
+ source->onTransaction(flags);
+ return LayerBase::doTransaction(flags);
+}
+
+void LayerBuffer::unlockPageFlip(const Transform& planeTransform,
+ Region& outDirtyRegion)
+{
+ // this code-path must be as tight as possible, it's called each time
+ // the screen is composited.
+ sp<Source> source(getSource());
+ if (source != 0)
+ source->onVisibilityResolved(planeTransform);
+ LayerBase::unlockPageFlip(planeTransform, outDirtyRegion);
+}
+
+void LayerBuffer::onDraw(const Region& clip) const
+{
+ sp<Source> source(getSource());
+ if (LIKELY(source != 0)) {
+ source->onDraw(clip);
+ } else {
+ clearWithOpenGL(clip);
+ }
+}
+
+bool LayerBuffer::transformed() const
+{
+ sp<Source> source(getSource());
+ if (LIKELY(source != 0))
+ return source->transformed();
+ return false;
+}
+
+/**
+ * This creates a "buffer" source for this surface
+ */
+status_t LayerBuffer::registerBuffers(const ISurface::BufferHeap& buffers)
+{
+ Mutex::Autolock _l(mLock);
+ if (mSource != 0)
+ return INVALID_OPERATION;
+
+ sp<BufferSource> source = new BufferSource(*this, buffers);
+
+ status_t result = source->getStatus();
+ if (result == NO_ERROR) {
+ mSource = source;
+ }
+ return result;
+}
+
+/**
+ * This creates an "overlay" source for this surface
+ */
+sp<OverlayRef> LayerBuffer::createOverlay(uint32_t w, uint32_t h, int32_t f)
+{
+ sp<OverlayRef> result;
+ Mutex::Autolock _l(mLock);
+ if (mSource != 0)
+ return result;
+
+ sp<OverlaySource> source = new OverlaySource(*this, &result, w, h, f);
+ if (result != 0) {
+ mSource = source;
+ }
+ return result;
+}
+
+sp<LayerBuffer::Source> LayerBuffer::getSource() const {
+ Mutex::Autolock _l(mLock);
+ return mSource;
+}
+
+sp<LayerBuffer::Source> LayerBuffer::clearSource() {
+ sp<Source> source;
+ Mutex::Autolock _l(mLock);
+ source = mSource;
+ mSource.clear();
+ return source;
+}
+
+// ============================================================================
+// LayerBuffer::SurfaceBuffer
+// ============================================================================
+
+LayerBuffer::SurfaceBuffer::SurfaceBuffer(SurfaceID id, LayerBuffer* owner)
+: LayerBaseClient::Surface(id, owner->getIdentity()), mOwner(owner)
+{
+}
+
+LayerBuffer::SurfaceBuffer::~SurfaceBuffer()
+{
+ unregisterBuffers();
+ mOwner = 0;
+}
+
+status_t LayerBuffer::SurfaceBuffer::onTransact(
+ uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+ switch (code) {
+ case REGISTER_BUFFERS:
+ case UNREGISTER_BUFFERS:
+ case CREATE_OVERLAY:
+ {
+ // codes that require permission check
+ IPCThreadState* ipc = IPCThreadState::self();
+ const int pid = ipc->getCallingPid();
+ const int self_pid = getpid();
+ if (LIKELY(pid != self_pid)) {
+ // we're called from a different process, do the real check
+ if (!checkCallingPermission(
+ String16("android.permission.ACCESS_SURFACE_FLINGER")))
+ {
+ const int uid = ipc->getCallingUid();
+ LOGE("Permission Denial: "
+ "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid);
+ return PERMISSION_DENIED;
+ }
+ }
+ }
+ }
+ return LayerBaseClient::Surface::onTransact(code, data, reply, flags);
+}
+
+status_t LayerBuffer::SurfaceBuffer::registerBuffers(const ISurface::BufferHeap& buffers)
+{
+ LayerBuffer* owner(getOwner());
+ if (owner)
+ return owner->registerBuffers(buffers);
+ return NO_INIT;
+}
+
+void LayerBuffer::SurfaceBuffer::postBuffer(ssize_t offset)
+{
+ LayerBuffer* owner(getOwner());
+ if (owner)
+ owner->postBuffer(offset);
+}
+
+void LayerBuffer::SurfaceBuffer::unregisterBuffers()
+{
+ LayerBuffer* owner(getOwner());
+ if (owner)
+ owner->unregisterBuffers();
+}
+
+sp<OverlayRef> LayerBuffer::SurfaceBuffer::createOverlay(
+ uint32_t w, uint32_t h, int32_t format) {
+ sp<OverlayRef> result;
+ LayerBuffer* owner(getOwner());
+ if (owner)
+ result = owner->createOverlay(w, h, format);
+ return result;
+}
+
+void LayerBuffer::SurfaceBuffer::disown()
+{
+ Mutex::Autolock _l(mLock);
+ mOwner = 0;
+}
+
+// ============================================================================
+// LayerBuffer::Buffer
+// ============================================================================
+
+LayerBuffer::Buffer::Buffer(const ISurface::BufferHeap& buffers, ssize_t offset)
+ : mBufferHeap(buffers)
+{
+ NativeBuffer& src(mNativeBuffer);
+ src.crop.l = 0;
+ src.crop.t = 0;
+ src.crop.r = buffers.w;
+ src.crop.b = buffers.h;
+ src.img.w = buffers.hor_stride ?: buffers.w;
+ src.img.h = buffers.ver_stride ?: buffers.h;
+ src.img.format = buffers.format;
+ src.img.offset = offset;
+ src.img.base = buffers.heap->base();
+ src.img.fd = buffers.heap->heapID();
+}
+
+LayerBuffer::Buffer::~Buffer()
+{
+}
+
+// ============================================================================
+// LayerBuffer::Source
+// LayerBuffer::BufferSource
+// LayerBuffer::OverlaySource
+// ============================================================================
+
+LayerBuffer::Source::Source(LayerBuffer& layer)
+ : mLayer(layer)
+{
+}
+LayerBuffer::Source::~Source() {
+}
+void LayerBuffer::Source::onDraw(const Region& clip) const {
+}
+void LayerBuffer::Source::onTransaction(uint32_t flags) {
+}
+void LayerBuffer::Source::onVisibilityResolved(
+ const Transform& planeTransform) {
+}
+void LayerBuffer::Source::postBuffer(ssize_t offset) {
+}
+void LayerBuffer::Source::unregisterBuffers() {
+}
+bool LayerBuffer::Source::transformed() const {
+ return mLayer.mTransformed;
+}
+
+// ---------------------------------------------------------------------------
+
+LayerBuffer::BufferSource::BufferSource(LayerBuffer& layer,
+ const ISurface::BufferHeap& buffers)
+ : Source(layer), mStatus(NO_ERROR),
+ mBufferSize(0), mTextureName(-1U)
+{
+ if (buffers.heap == NULL) {
+ // this is allowed, but in this case, it is illegal to receive
+ // postBuffer(). The surface just erases the framebuffer with
+ // fully transparent pixels.
+ mBufferHeap = buffers;
+ mLayer.setNeedsBlending(false);
+ return;
+ }
+
+ status_t err = (buffers.heap->heapID() >= 0) ? NO_ERROR : NO_INIT;
+ if (err != NO_ERROR) {
+ LOGE("LayerBuffer::BufferSource: invalid heap (%s)", strerror(err));
+ mStatus = err;
+ return;
+ }
+
+ PixelFormatInfo info;
+ err = getPixelFormatInfo(buffers.format, &info);
+ if (err != NO_ERROR) {
+ LOGE("LayerBuffer::BufferSource: invalid format %d (%s)",
+ buffers.format, strerror(err));
+ mStatus = err;
+ return;
+ }
+
+ if (buffers.hor_stride<0 || buffers.ver_stride<0) {
+ LOGE("LayerBuffer::BufferSource: invalid parameters "
+ "(w=%d, h=%d, xs=%d, ys=%d)",
+ buffers.w, buffers.h, buffers.hor_stride, buffers.ver_stride);
+ mStatus = BAD_VALUE;
+ return;
+ }
+
+ mBufferHeap = buffers;
+ mLayer.setNeedsBlending((info.h_alpha - info.l_alpha) > 0);
+ mBufferSize = info.getScanlineSize(buffers.hor_stride)*buffers.ver_stride;
+ mLayer.forceVisibilityTransaction();
+
+}
+
+LayerBuffer::BufferSource::~BufferSource()
+{
+ if (mTextureName != -1U) {
+ LayerBase::deletedTextures.add(mTextureName);
+ }
+}
+
+void LayerBuffer::BufferSource::postBuffer(ssize_t offset)
+{
+ ISurface::BufferHeap buffers;
+ { // scope for the lock
+ Mutex::Autolock _l(mLock);
+ buffers = mBufferHeap;
+ if (buffers.heap != 0) {
+ const size_t memorySize = buffers.heap->getSize();
+ if ((size_t(offset) + mBufferSize) > memorySize) {
+ LOGE("LayerBuffer::BufferSource::postBuffer() "
+ "invalid buffer (offset=%d, size=%d, heap-size=%d",
+ int(offset), int(mBufferSize), int(memorySize));
+ return;
+ }
+ }
+ }
+
+ sp<Buffer> buffer;
+ if (buffers.heap != 0) {
+ buffer = new LayerBuffer::Buffer(buffers, offset);
+ if (buffer->getStatus() != NO_ERROR)
+ buffer.clear();
+ setBuffer(buffer);
+ mLayer.invalidate();
+ }
+}
+
+void LayerBuffer::BufferSource::unregisterBuffers()
+{
+ Mutex::Autolock _l(mLock);
+ mBufferHeap.heap.clear();
+ mBuffer.clear();
+ mLayer.invalidate();
+}
+
+sp<LayerBuffer::Buffer> LayerBuffer::BufferSource::getBuffer() const
+{
+ Mutex::Autolock _l(mLock);
+ return mBuffer;
+}
+
+void LayerBuffer::BufferSource::setBuffer(const sp<LayerBuffer::Buffer>& buffer)
+{
+ Mutex::Autolock _l(mLock);
+ mBuffer = buffer;
+}
+
+bool LayerBuffer::BufferSource::transformed() const
+{
+ return mBufferHeap.transform ? true : Source::transformed();
+}
+
+void LayerBuffer::BufferSource::onDraw(const Region& clip) const
+{
+ sp<Buffer> buffer(getBuffer());
+ if (UNLIKELY(buffer == 0)) {
+ // nothing to do, we don't have a buffer
+ mLayer.clearWithOpenGL(clip);
+ return;
+ }
+
+ status_t err = NO_ERROR;
+ NativeBuffer src(buffer->getBuffer());
+ const Rect& transformedBounds = mLayer.getTransformedBounds();
+ const int can_use_copybit = mLayer.canUseCopybit();
+
+ if (can_use_copybit) {
+ const int src_width = src.crop.r - src.crop.l;
+ const int src_height = src.crop.b - src.crop.t;
+ int W = transformedBounds.width();
+ int H = transformedBounds.height();
+ if (mLayer.getOrientation() & Transform::ROT_90) {
+ int t(W); W=H; H=t;
+ }
+
+ /* With LayerBuffer, it is likely that we'll have to rescale the
+ * surface, because this is often used for video playback or
+ * camera-preview. Since we want these operation as fast as possible
+ * we make sure we can use the 2D H/W even if it doesn't support
+ * the requested scale factor, in which case we perform the scaling
+ * in several passes. */
+
+ copybit_device_t* copybit = mLayer.mFlinger->getBlitEngine();
+ const float min = copybit->get(copybit, COPYBIT_MINIFICATION_LIMIT);
+ const float mag = copybit->get(copybit, COPYBIT_MAGNIFICATION_LIMIT);
+
+ float xscale = 1.0f;
+ if (src_width > W*min) xscale = 1.0f / min;
+ else if (src_width*mag < W) xscale = mag;
+
+ float yscale = 1.0f;
+ if (src_height > H*min) yscale = 1.0f / min;
+ else if (src_height*mag < H) yscale = mag;
+
+ if (UNLIKELY(xscale!=1.0f || yscale!=1.0f)) {
+ if (UNLIKELY(mTemporaryDealer == 0)) {
+ // allocate a memory-dealer for this the first time
+ mTemporaryDealer = mLayer.mFlinger->getSurfaceHeapManager()
+ ->createHeap(ISurfaceComposer::eHardware);
+ mTempBitmap.init(mTemporaryDealer);
+ }
+
+ const int tmp_w = floorf(src_width * xscale);
+ const int tmp_h = floorf(src_height * yscale);
+ err = mTempBitmap.setBits(tmp_w, tmp_h, 1, src.img.format);
+
+ if (LIKELY(err == NO_ERROR)) {
+ NativeBuffer tmp;
+ mTempBitmap.getBitmapSurface(&tmp.img);
+ tmp.crop.l = 0;
+ tmp.crop.t = 0;
+ tmp.crop.r = tmp.img.w;
+ tmp.crop.b = tmp.img.h;
+
+ region_iterator tmp_it(Region(Rect(tmp.crop.r, tmp.crop.b)));
+ copybit->set_parameter(copybit, COPYBIT_TRANSFORM, 0);
+ copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, 0xFF);
+ copybit->set_parameter(copybit, COPYBIT_DITHER, COPYBIT_DISABLE);
+ err = copybit->stretch(copybit,
+ &tmp.img, &src.img, &tmp.crop, &src.crop, &tmp_it);
+ src = tmp;
+ }
+ }
+
+ const DisplayHardware& hw(mLayer.graphicPlane(0).displayHardware());
+ copybit_image_t dst;
+ hw.getDisplaySurface(&dst);
+ const copybit_rect_t& drect
+ = reinterpret_cast<const copybit_rect_t&>(transformedBounds);
+ const State& s(mLayer.drawingState());
+ region_iterator it(clip);
+
+ // pick the right orientation for this buffer
+ int orientation = mLayer.getOrientation();
+ if (UNLIKELY(mBufferHeap.transform)) {
+ Transform rot90;
+ GraphicPlane::orientationToTransfrom(
+ ISurfaceComposer::eOrientation90, 0, 0, &rot90);
+ const Transform& planeTransform(mLayer.graphicPlane(0).transform());
+ const Layer::State& s(mLayer.drawingState());
+ Transform tr(planeTransform * s.transform * rot90);
+ orientation = tr.getOrientation();
+ }
+
+ copybit->set_parameter(copybit, COPYBIT_TRANSFORM, orientation);
+ copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, s.alpha);
+ copybit->set_parameter(copybit, COPYBIT_DITHER, COPYBIT_ENABLE);
+
+ err = copybit->stretch(copybit,
+ &dst, &src.img, &drect, &src.crop, &it);
+ if (err != NO_ERROR) {
+ LOGE("copybit failed (%s)", strerror(err));
+ }
+ }
+
+ if (!can_use_copybit || err) {
+ if (UNLIKELY(mTextureName == -1LU)) {
+ mTextureName = mLayer.createTexture();
+ }
+ GLuint w = 0;
+ GLuint h = 0;
+ GGLSurface t;
+ t.version = sizeof(GGLSurface);
+ t.width = src.crop.r;
+ t.height = src.crop.b;
+ t.stride = src.img.w;
+ t.vstride= src.img.h;
+ t.format = src.img.format;
+ t.data = (GGLubyte*)(intptr_t(src.img.base) + src.img.offset);
+ const Region dirty(Rect(t.width, t.height));
+ mLayer.loadTexture(dirty, mTextureName, t, w, h);
+ mLayer.drawWithOpenGL(clip, mTextureName, t, mBufferHeap.transform);
+ }
+}
+
+
+// ---------------------------------------------------------------------------
+
+LayerBuffer::OverlaySource::OverlaySource(LayerBuffer& layer,
+ sp<OverlayRef>* overlayRef,
+ uint32_t w, uint32_t h, int32_t format)
+ : Source(layer), mVisibilityChanged(false),
+ mOverlay(0), mOverlayHandle(0), mOverlayDevice(0)
+{
+ overlay_control_device_t* overlay_dev = mLayer.mFlinger->getOverlayEngine();
+ if (overlay_dev == NULL) {
+ // overlays not supported
+ return;
+ }
+
+ mOverlayDevice = overlay_dev;
+ overlay_t* overlay = overlay_dev->createOverlay(overlay_dev, w, h, format);
+ if (overlay == NULL) {
+ // couldn't create the overlay (no memory? no more overlays?)
+ return;
+ }
+
+ // enable dithering...
+ overlay_dev->setParameter(overlay_dev, overlay,
+ OVERLAY_DITHER, OVERLAY_ENABLE);
+
+ mOverlay = overlay;
+ mWidth = overlay->w;
+ mHeight = overlay->h;
+ mFormat = overlay->format;
+ mWidthStride = overlay->w_stride;
+ mHeightStride = overlay->h_stride;
+
+ mOverlayHandle = overlay->getHandleRef(overlay);
+
+ // NOTE: here it's okay to acquire a reference to "this"m as long as
+ // the reference is not released before we leave the ctor.
+ sp<OverlayChannel> channel = new OverlayChannel(this);
+
+ *overlayRef = new OverlayRef(mOverlayHandle, channel,
+ mWidth, mHeight, mFormat, mWidthStride, mHeightStride);
+}
+
+LayerBuffer::OverlaySource::~OverlaySource()
+{
+ if (mOverlay && mOverlayDevice) {
+ overlay_control_device_t* overlay_dev = mOverlayDevice;
+ overlay_dev->destroyOverlay(overlay_dev, mOverlay);
+ }
+}
+
+void LayerBuffer::OverlaySource::onTransaction(uint32_t flags)
+{
+ const Layer::State& front(mLayer.drawingState());
+ const Layer::State& temp(mLayer.currentState());
+ if (temp.sequence != front.sequence) {
+ mVisibilityChanged = true;
+ }
+}
+
+void LayerBuffer::OverlaySource::onVisibilityResolved(
+ const Transform& planeTransform)
+{
+ // this code-path must be as tight as possible, it's called each time
+ // the screen is composited.
+ if (UNLIKELY(mOverlay != 0)) {
+ if (mVisibilityChanged) {
+ mVisibilityChanged = false;
+ const Rect& bounds = mLayer.getTransformedBounds();
+ int x = bounds.left;
+ int y = bounds.top;
+ int w = bounds.width();
+ int h = bounds.height();
+
+ // we need a lock here to protect "destroy"
+ Mutex::Autolock _l(mLock);
+ if (mOverlay) {
+ overlay_control_device_t* overlay_dev = mOverlayDevice;
+ overlay_dev->setPosition(overlay_dev, mOverlay, x,y,w,h);
+ overlay_dev->setParameter(overlay_dev, mOverlay,
+ OVERLAY_TRANSFORM, mLayer.getOrientation());
+ }
+ }
+ }
+}
+
+void LayerBuffer::OverlaySource::serverDestroy()
+{
+ mLayer.clearSource();
+ destroyOverlay();
+}
+
+void LayerBuffer::OverlaySource::destroyOverlay()
+{
+ // we need a lock here to protect "onVisibilityResolved"
+ Mutex::Autolock _l(mLock);
+ if (mOverlay) {
+ overlay_control_device_t* overlay_dev = mOverlayDevice;
+ overlay_dev->destroyOverlay(overlay_dev, mOverlay);
+ mOverlay = 0;
+ }
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android