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Diffstat (limited to 'services/surfaceflinger/LayerBase.cpp')
| -rw-r--r-- | services/surfaceflinger/LayerBase.cpp | 829 |
1 files changed, 829 insertions, 0 deletions
diff --git a/services/surfaceflinger/LayerBase.cpp b/services/surfaceflinger/LayerBase.cpp new file mode 100644 index 0000000..a8b735e --- /dev/null +++ b/services/surfaceflinger/LayerBase.cpp @@ -0,0 +1,829 @@ +/* + * 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. + */ + +#include <stdlib.h> +#include <stdint.h> +#include <sys/types.h> + +#include <utils/Errors.h> +#include <utils/Log.h> +#include <binder/IPCThreadState.h> +#include <binder/IServiceManager.h> + +#include <GLES/gl.h> +#include <GLES/glext.h> + +#include <hardware/hardware.h> + +#include "clz.h" +#include "LayerBase.h" +#include "SurfaceFlinger.h" +#include "DisplayHardware/DisplayHardware.h" + + +namespace android { + +// --------------------------------------------------------------------------- + +const uint32_t LayerBase::typeInfo = 1; +const char* const LayerBase::typeID = "LayerBase"; + +const uint32_t LayerBaseClient::typeInfo = LayerBase::typeInfo | 2; +const char* const LayerBaseClient::typeID = "LayerBaseClient"; + +// --------------------------------------------------------------------------- + +LayerBase::LayerBase(SurfaceFlinger* flinger, DisplayID display) + : dpy(display), contentDirty(false), + mFlinger(flinger), + mTransformed(false), + mUseLinearFiltering(false), + mOrientation(0), + mLeft(0), mTop(0), + mTransactionFlags(0), + mPremultipliedAlpha(true), mDebug(false), + mInvalidate(0) +{ + const DisplayHardware& hw(flinger->graphicPlane(0).displayHardware()); + mFlags = hw.getFlags(); +} + +LayerBase::~LayerBase() +{ +} + +void LayerBase::setName(const String8& name) { + mName = name; +} + +String8 LayerBase::getName() const { + return mName; +} + +const GraphicPlane& LayerBase::graphicPlane(int dpy) const +{ + return mFlinger->graphicPlane(dpy); +} + +GraphicPlane& LayerBase::graphicPlane(int dpy) +{ + return mFlinger->graphicPlane(dpy); +} + +void LayerBase::initStates(uint32_t w, uint32_t h, uint32_t flags) +{ + uint32_t layerFlags = 0; + if (flags & ISurfaceComposer::eHidden) + layerFlags = ISurfaceComposer::eLayerHidden; + + if (flags & ISurfaceComposer::eNonPremultiplied) + mPremultipliedAlpha = false; + + mCurrentState.z = 0; + mCurrentState.w = w; + mCurrentState.h = h; + mCurrentState.requested_w = w; + mCurrentState.requested_h = h; + mCurrentState.alpha = 0xFF; + mCurrentState.flags = layerFlags; + mCurrentState.sequence = 0; + mCurrentState.transform.set(0, 0); + + // drawing state & current state are identical + mDrawingState = mCurrentState; +} + +void LayerBase::commitTransaction() { + mDrawingState = mCurrentState; +} +void LayerBase::forceVisibilityTransaction() { + // this can be called without SurfaceFlinger.mStateLock, but if we + // can atomically increment the sequence number, it doesn't matter. + android_atomic_inc(&mCurrentState.sequence); + requestTransaction(); +} +bool LayerBase::requestTransaction() { + int32_t old = setTransactionFlags(eTransactionNeeded); + return ((old & eTransactionNeeded) == 0); +} +uint32_t LayerBase::getTransactionFlags(uint32_t flags) { + return android_atomic_and(~flags, &mTransactionFlags) & flags; +} +uint32_t LayerBase::setTransactionFlags(uint32_t flags) { + return android_atomic_or(flags, &mTransactionFlags); +} + +bool LayerBase::setPosition(int32_t x, int32_t y) { + if (mCurrentState.transform.tx() == x && mCurrentState.transform.ty() == y) + return false; + mCurrentState.sequence++; + mCurrentState.transform.set(x, y); + requestTransaction(); + return true; +} +bool LayerBase::setLayer(uint32_t z) { + if (mCurrentState.z == z) + return false; + mCurrentState.sequence++; + mCurrentState.z = z; + requestTransaction(); + return true; +} +bool LayerBase::setSize(uint32_t w, uint32_t h) { + if (mCurrentState.requested_w == w && mCurrentState.requested_h == h) + return false; + mCurrentState.requested_w = w; + mCurrentState.requested_h = h; + requestTransaction(); + return true; +} +bool LayerBase::setAlpha(uint8_t alpha) { + if (mCurrentState.alpha == alpha) + return false; + mCurrentState.sequence++; + mCurrentState.alpha = alpha; + requestTransaction(); + return true; +} +bool LayerBase::setMatrix(const layer_state_t::matrix22_t& matrix) { + // TODO: check the matrix has changed + mCurrentState.sequence++; + mCurrentState.transform.set( + matrix.dsdx, matrix.dsdy, matrix.dtdx, matrix.dtdy); + requestTransaction(); + return true; +} +bool LayerBase::setTransparentRegionHint(const Region& transparent) { + // TODO: check the region has changed + mCurrentState.sequence++; + mCurrentState.transparentRegion = transparent; + requestTransaction(); + return true; +} +bool LayerBase::setFlags(uint8_t flags, uint8_t mask) { + const uint32_t newFlags = (mCurrentState.flags & ~mask) | (flags & mask); + if (mCurrentState.flags == newFlags) + return false; + mCurrentState.sequence++; + mCurrentState.flags = newFlags; + requestTransaction(); + return true; +} + +Rect LayerBase::visibleBounds() const +{ + return mTransformedBounds; +} + +void LayerBase::setVisibleRegion(const Region& visibleRegion) { + // always called from main thread + visibleRegionScreen = visibleRegion; +} + +void LayerBase::setCoveredRegion(const Region& coveredRegion) { + // always called from main thread + coveredRegionScreen = coveredRegion; +} + +uint32_t LayerBase::doTransaction(uint32_t flags) +{ + const Layer::State& front(drawingState()); + const Layer::State& temp(currentState()); + + if ((front.requested_w != temp.requested_w) || + (front.requested_h != temp.requested_h)) { + // resize the layer, set the physical size to the requested size + Layer::State& editTemp(currentState()); + editTemp.w = temp.requested_w; + editTemp.h = temp.requested_h; + } + + if ((front.w != temp.w) || (front.h != temp.h)) { + // invalidate and recompute the visible regions if needed + flags |= Layer::eVisibleRegion; + } + + if (temp.sequence != front.sequence) { + // invalidate and recompute the visible regions if needed + flags |= eVisibleRegion; + this->contentDirty = true; + + const bool linearFiltering = mUseLinearFiltering; + mUseLinearFiltering = false; + if (!(mFlags & DisplayHardware::SLOW_CONFIG)) { + // we may use linear filtering, if the matrix scales us + const uint8_t type = temp.transform.getType(); + if (!temp.transform.preserveRects() || (type >= Transform::SCALE)) { + mUseLinearFiltering = true; + } + } + } + + // Commit the transaction + commitTransaction(); + return flags; +} + +void LayerBase::validateVisibility(const Transform& planeTransform) +{ + const Layer::State& s(drawingState()); + const Transform tr(planeTransform * s.transform); + const bool transformed = tr.transformed(); + + uint32_t w = s.w; + uint32_t h = s.h; + tr.transform(mVertices[0], 0, 0); + tr.transform(mVertices[1], 0, h); + tr.transform(mVertices[2], w, h); + tr.transform(mVertices[3], w, 0); + if (UNLIKELY(transformed)) { + // NOTE: here we could also punt if we have too many rectangles + // in the transparent region + if (tr.preserveRects()) { + // transform the transparent region + transparentRegionScreen = tr.transform(s.transparentRegion); + } else { + // transformation too complex, can't do the transparent region + // optimization. + transparentRegionScreen.clear(); + } + } else { + transparentRegionScreen = s.transparentRegion; + } + + // cache a few things... + mOrientation = tr.getOrientation(); + mTransformedBounds = tr.makeBounds(w, h); + mTransformed = transformed; + mLeft = tr.tx(); + mTop = tr.ty(); +} + +void LayerBase::lockPageFlip(bool& recomputeVisibleRegions) +{ +} + +void LayerBase::unlockPageFlip( + const Transform& planeTransform, Region& outDirtyRegion) +{ + if ((android_atomic_and(~1, &mInvalidate)&1) == 1) { + outDirtyRegion.orSelf(visibleRegionScreen); + } +} + +void LayerBase::finishPageFlip() +{ +} + +void LayerBase::invalidate() +{ + if ((android_atomic_or(1, &mInvalidate)&1) == 0) { + mFlinger->signalEvent(); + } +} + +void LayerBase::drawRegion(const Region& reg) const +{ + Region::const_iterator it = reg.begin(); + Region::const_iterator const end = reg.end(); + if (it != end) { + Rect r; + const DisplayHardware& hw(graphicPlane(0).displayHardware()); + const int32_t fbWidth = hw.getWidth(); + const int32_t fbHeight = hw.getHeight(); + const GLshort vertices[][2] = { { 0, 0 }, { fbWidth, 0 }, + { fbWidth, fbHeight }, { 0, fbHeight } }; + glVertexPointer(2, GL_SHORT, 0, vertices); + while (it != end) { + const Rect& r = *it++; + const GLint sy = fbHeight - (r.top + r.height()); + glScissor(r.left, sy, r.width(), r.height()); + glDrawArrays(GL_TRIANGLE_FAN, 0, 4); + } + } +} + +void LayerBase::draw(const Region& inClip) const +{ + // invalidate the region we'll update + Region clip(inClip); // copy-on-write, so no-op most of the time + + // Remove the transparent area from the clipping region + const State& s = drawingState(); + if (LIKELY(!s.transparentRegion.isEmpty())) { + clip.subtract(transparentRegionScreen); + if (clip.isEmpty()) { + // usually this won't happen because this should be taken care of + // by SurfaceFlinger::computeVisibleRegions() + return; + } + } + + // reset GL state + glEnable(GL_SCISSOR_TEST); + + onDraw(clip); + + /* + glDisable(GL_TEXTURE_2D); + glDisable(GL_DITHER); + glEnable(GL_BLEND); + glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); + glColor4x(0, 0x8000, 0, 0x10000); + drawRegion(transparentRegionScreen); + glDisable(GL_BLEND); + */ +} + +GLuint LayerBase::createTexture() const +{ + GLuint textureName = -1; + glGenTextures(1, &textureName); + glBindTexture(GL_TEXTURE_2D, textureName); + glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + return textureName; +} + +void LayerBase::clearWithOpenGL(const Region& clip, GLclampx red, + GLclampx green, GLclampx blue, + GLclampx alpha) const +{ + const DisplayHardware& hw(graphicPlane(0).displayHardware()); + const uint32_t fbHeight = hw.getHeight(); + glColor4x(red,green,blue,alpha); + glDisable(GL_TEXTURE_2D); + glDisable(GL_BLEND); + glDisable(GL_DITHER); + + Region::const_iterator it = clip.begin(); + Region::const_iterator const end = clip.end(); + glEnable(GL_SCISSOR_TEST); + glVertexPointer(2, GL_FIXED, 0, mVertices); + while (it != end) { + const Rect& r = *it++; + const GLint sy = fbHeight - (r.top + r.height()); + glScissor(r.left, sy, r.width(), r.height()); + glDrawArrays(GL_TRIANGLE_FAN, 0, 4); + } +} + +void LayerBase::clearWithOpenGL(const Region& clip) const +{ + clearWithOpenGL(clip,0,0,0,0); +} + +void LayerBase::drawWithOpenGL(const Region& clip, const Texture& texture) const +{ + const DisplayHardware& hw(graphicPlane(0).displayHardware()); + const uint32_t fbHeight = hw.getHeight(); + const State& s(drawingState()); + + // bind our texture + validateTexture(texture.name); + uint32_t width = texture.width; + uint32_t height = texture.height; + + glEnable(GL_TEXTURE_2D); + + if (UNLIKELY(s.alpha < 0xFF)) { + // We have an alpha-modulation. We need to modulate all + // texture components by alpha because we're always using + // premultiplied alpha. + + // If the texture doesn't have an alpha channel we can + // use REPLACE and switch to non premultiplied alpha + // blending (SRCA/ONE_MINUS_SRCA). + + GLenum env, src; + if (needsBlending()) { + env = GL_MODULATE; + src = mPremultipliedAlpha ? GL_ONE : GL_SRC_ALPHA; + } else { + env = GL_REPLACE; + src = GL_SRC_ALPHA; + } + const GGLfixed alpha = (s.alpha << 16)/255; + glColor4x(alpha, alpha, alpha, alpha); + glEnable(GL_BLEND); + glBlendFunc(src, GL_ONE_MINUS_SRC_ALPHA); + glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, env); + } else { + glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); + glColor4x(0x10000, 0x10000, 0x10000, 0x10000); + if (needsBlending()) { + GLenum src = mPremultipliedAlpha ? GL_ONE : GL_SRC_ALPHA; + glEnable(GL_BLEND); + glBlendFunc(src, GL_ONE_MINUS_SRC_ALPHA); + } else { + glDisable(GL_BLEND); + } + } + + Region::const_iterator it = clip.begin(); + Region::const_iterator const end = clip.end(); + + //StopWatch watch("GL transformed"); + const GLfixed texCoords[4][2] = { + { 0, 0 }, + { 0, 0x10000 }, + { 0x10000, 0x10000 }, + { 0x10000, 0 } + }; + + glMatrixMode(GL_TEXTURE); + glLoadIdentity(); + + // the texture's source is rotated + switch (texture.transform) { + case HAL_TRANSFORM_ROT_90: + glTranslatef(0, 1, 0); + glRotatef(-90, 0, 0, 1); + break; + case HAL_TRANSFORM_ROT_180: + glTranslatef(1, 1, 0); + glRotatef(-180, 0, 0, 1); + break; + case HAL_TRANSFORM_ROT_270: + glTranslatef(1, 0, 0); + glRotatef(-270, 0, 0, 1); + break; + } + + if (texture.NPOTAdjust) { + glScalef(texture.wScale, texture.hScale, 1.0f); + } + + glEnableClientState(GL_TEXTURE_COORD_ARRAY); + glVertexPointer(2, GL_FIXED, 0, mVertices); + glTexCoordPointer(2, GL_FIXED, 0, texCoords); + + while (it != end) { + const Rect& r = *it++; + const GLint sy = fbHeight - (r.top + r.height()); + glScissor(r.left, sy, r.width(), r.height()); + glDrawArrays(GL_TRIANGLE_FAN, 0, 4); + } + glDisableClientState(GL_TEXTURE_COORD_ARRAY); +} + +void LayerBase::validateTexture(GLint textureName) const +{ + glBindTexture(GL_TEXTURE_2D, textureName); + // TODO: reload the texture if needed + // this is currently done in loadTexture() below + if (mUseLinearFiltering) { + glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + } else { + glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + } + + if (needsDithering()) { + glEnable(GL_DITHER); + } else { + glDisable(GL_DITHER); + } +} + +bool LayerBase::isSupportedYuvFormat(int format) const +{ + switch (format) { + case HAL_PIXEL_FORMAT_YCbCr_422_SP: + case HAL_PIXEL_FORMAT_YCbCr_420_SP: + case HAL_PIXEL_FORMAT_YCbCr_422_P: + case HAL_PIXEL_FORMAT_YCbCr_420_P: + case HAL_PIXEL_FORMAT_YCbCr_422_I: + case HAL_PIXEL_FORMAT_YCbCr_420_I: + case HAL_PIXEL_FORMAT_YCrCb_420_SP: + return true; + } + return false; +} + +void LayerBase::loadTexture(Texture* texture, + const Region& dirty, const GGLSurface& t) const +{ + if (texture->name == -1U) { + // uh? + return; + } + + glBindTexture(GL_TEXTURE_2D, texture->name); + + /* + * In OpenGL ES we can't specify a stride with glTexImage2D (however, + * GL_UNPACK_ALIGNMENT is a limited form of stride). + * So if the stride here isn't representable with GL_UNPACK_ALIGNMENT, we + * need to do something reasonable (here creating a bigger texture). + * + * extra pixels = (((stride - width) * pixelsize) / GL_UNPACK_ALIGNMENT); + * + * This situation doesn't happen often, but some h/w have a limitation + * for their framebuffer (eg: must be multiple of 8 pixels), and + * we need to take that into account when using these buffers as + * textures. + * + * This should never be a problem with POT textures + */ + + int unpack = __builtin_ctz(t.stride * bytesPerPixel(t.format)); + unpack = 1 << ((unpack > 3) ? 3 : unpack); + glPixelStorei(GL_UNPACK_ALIGNMENT, unpack); + + /* + * round to POT if needed + */ + if (!(mFlags & DisplayHardware::NPOT_EXTENSION)) { + texture->NPOTAdjust = true; + } + + if (texture->NPOTAdjust) { + // find the smallest power-of-two that will accommodate our surface + texture->potWidth = 1 << (31 - clz(t.width)); + texture->potHeight = 1 << (31 - clz(t.height)); + if (texture->potWidth < t.width) texture->potWidth <<= 1; + if (texture->potHeight < t.height) texture->potHeight <<= 1; + texture->wScale = float(t.width) / texture->potWidth; + texture->hScale = float(t.height) / texture->potHeight; + } else { + texture->potWidth = t.width; + texture->potHeight = t.height; + } + + Rect bounds(dirty.bounds()); + GLvoid* data = 0; + if (texture->width != t.width || texture->height != t.height) { + texture->width = t.width; + texture->height = t.height; + + // texture size changed, we need to create a new one + bounds.set(Rect(t.width, t.height)); + if (t.width == texture->potWidth && + t.height == texture->potHeight) { + // we can do it one pass + data = t.data; + } + + if (t.format == HAL_PIXEL_FORMAT_RGB_565) { + glTexImage2D(GL_TEXTURE_2D, 0, + GL_RGB, texture->potWidth, texture->potHeight, 0, + GL_RGB, GL_UNSIGNED_SHORT_5_6_5, data); + } else if (t.format == HAL_PIXEL_FORMAT_RGBA_4444) { + glTexImage2D(GL_TEXTURE_2D, 0, + GL_RGBA, texture->potWidth, texture->potHeight, 0, + GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, data); + } else if (t.format == HAL_PIXEL_FORMAT_RGBA_8888 || + t.format == HAL_PIXEL_FORMAT_RGBX_8888) { + glTexImage2D(GL_TEXTURE_2D, 0, + GL_RGBA, texture->potWidth, texture->potHeight, 0, + GL_RGBA, GL_UNSIGNED_BYTE, data); + } else if (isSupportedYuvFormat(t.format)) { + // just show the Y plane of YUV buffers + glTexImage2D(GL_TEXTURE_2D, 0, + GL_LUMINANCE, texture->potWidth, texture->potHeight, 0, + GL_LUMINANCE, GL_UNSIGNED_BYTE, data); + } else { + // oops, we don't handle this format! + LOGE("layer %p, texture=%d, using format %d, which is not " + "supported by the GL", this, texture->name, t.format); + } + } + if (!data) { + if (t.format == HAL_PIXEL_FORMAT_RGB_565) { + glTexSubImage2D(GL_TEXTURE_2D, 0, + 0, bounds.top, t.width, bounds.height(), + GL_RGB, GL_UNSIGNED_SHORT_5_6_5, + t.data + bounds.top*t.stride*2); + } else if (t.format == HAL_PIXEL_FORMAT_RGBA_4444) { + glTexSubImage2D(GL_TEXTURE_2D, 0, + 0, bounds.top, t.width, bounds.height(), + GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, + t.data + bounds.top*t.stride*2); + } else if (t.format == HAL_PIXEL_FORMAT_RGBA_8888 || + t.format == HAL_PIXEL_FORMAT_RGBX_8888) { + glTexSubImage2D(GL_TEXTURE_2D, 0, + 0, bounds.top, t.width, bounds.height(), + GL_RGBA, GL_UNSIGNED_BYTE, + t.data + bounds.top*t.stride*4); + } else if (isSupportedYuvFormat(t.format)) { + // just show the Y plane of YUV buffers + glTexSubImage2D(GL_TEXTURE_2D, 0, + 0, bounds.top, t.width, bounds.height(), + GL_LUMINANCE, GL_UNSIGNED_BYTE, + t.data + bounds.top*t.stride); + } + } +} + +status_t LayerBase::initializeEglImage( + const sp<GraphicBuffer>& buffer, Texture* texture) +{ + status_t err = NO_ERROR; + + // we need to recreate the texture + EGLDisplay dpy(mFlinger->graphicPlane(0).getEGLDisplay()); + + // free the previous image + if (texture->image != EGL_NO_IMAGE_KHR) { + eglDestroyImageKHR(dpy, texture->image); + texture->image = EGL_NO_IMAGE_KHR; + } + + // construct an EGL_NATIVE_BUFFER_ANDROID + android_native_buffer_t* clientBuf = buffer->getNativeBuffer(); + + // create the new EGLImageKHR + const EGLint attrs[] = { + EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, + EGL_NONE, EGL_NONE + }; + texture->image = eglCreateImageKHR( + dpy, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID, + (EGLClientBuffer)clientBuf, attrs); + + if (texture->image != EGL_NO_IMAGE_KHR) { + glBindTexture(GL_TEXTURE_2D, texture->name); + glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, + (GLeglImageOES)texture->image); + GLint error = glGetError(); + if (UNLIKELY(error != GL_NO_ERROR)) { + LOGE("layer=%p, glEGLImageTargetTexture2DOES(%p) " + "failed err=0x%04x", + this, texture->image, error); + err = INVALID_OPERATION; + } else { + // Everything went okay! + texture->NPOTAdjust = false; + texture->dirty = false; + texture->width = clientBuf->width; + texture->height = clientBuf->height; + } + } else { + LOGE("layer=%p, eglCreateImageKHR() failed. err=0x%4x", + this, eglGetError()); + err = INVALID_OPERATION; + } + return err; +} + + +// --------------------------------------------------------------------------- + +int32_t LayerBaseClient::sIdentity = 0; + +LayerBaseClient::LayerBaseClient(SurfaceFlinger* flinger, DisplayID display, + const sp<Client>& client, int32_t i) + : LayerBase(flinger, display), lcblk(NULL), client(client), mIndex(i), + mIdentity(uint32_t(android_atomic_inc(&sIdentity))) +{ + lcblk = new SharedBufferServer( + client->ctrlblk, i, NUM_BUFFERS, + mIdentity); +} + +void LayerBaseClient::onFirstRef() +{ + sp<Client> client(this->client.promote()); + if (client != 0) { + client->bindLayer(this, mIndex); + } +} + +LayerBaseClient::~LayerBaseClient() +{ + sp<Client> client(this->client.promote()); + if (client != 0) { + client->free(mIndex); + } + delete lcblk; +} + +int32_t LayerBaseClient::serverIndex() const +{ + sp<Client> client(this->client.promote()); + if (client != 0) { + return (client->cid<<16)|mIndex; + } + return 0xFFFF0000 | mIndex; +} + +sp<LayerBaseClient::Surface> LayerBaseClient::getSurface() +{ + sp<Surface> s; + Mutex::Autolock _l(mLock); + s = mClientSurface.promote(); + if (s == 0) { + s = createSurface(); + mClientSurface = s; + } + return s; +} + +sp<LayerBaseClient::Surface> LayerBaseClient::createSurface() const +{ + return new Surface(mFlinger, clientIndex(), mIdentity, + const_cast<LayerBaseClient *>(this)); +} + +// called with SurfaceFlinger::mStateLock as soon as the layer is entered +// in the purgatory list +void LayerBaseClient::onRemoved() +{ + // wake up the condition + lcblk->setStatus(NO_INIT); +} + +// --------------------------------------------------------------------------- + +LayerBaseClient::Surface::Surface( + const sp<SurfaceFlinger>& flinger, + SurfaceID id, int identity, + const sp<LayerBaseClient>& owner) + : mFlinger(flinger), mToken(id), mIdentity(identity), mOwner(owner) +{ +} + +LayerBaseClient::Surface::~Surface() +{ + /* + * This is a good place to clean-up all client resources + */ + + // destroy client resources + sp<LayerBaseClient> layer = getOwner(); + if (layer != 0) { + mFlinger->destroySurface(layer); + } +} + +sp<LayerBaseClient> LayerBaseClient::Surface::getOwner() const { + sp<LayerBaseClient> owner(mOwner.promote()); + return owner; +} + +status_t LayerBaseClient::Surface::onTransact( + uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) +{ + switch (code) { + case REGISTER_BUFFERS: + case UNREGISTER_BUFFERS: + case CREATE_OVERLAY: + { + if (!mFlinger->mAccessSurfaceFlinger.checkCalling()) { + IPCThreadState* ipc = IPCThreadState::self(); + const int pid = ipc->getCallingPid(); + const int uid = ipc->getCallingUid(); + LOGE("Permission Denial: " + "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid); + return PERMISSION_DENIED; + } + } + } + return BnSurface::onTransact(code, data, reply, flags); +} + +sp<GraphicBuffer> LayerBaseClient::Surface::requestBuffer(int index, int usage) +{ + return NULL; +} + +status_t LayerBaseClient::Surface::registerBuffers( + const ISurface::BufferHeap& buffers) +{ + return INVALID_OPERATION; +} + +void LayerBaseClient::Surface::postBuffer(ssize_t offset) +{ +} + +void LayerBaseClient::Surface::unregisterBuffers() +{ +} + +sp<OverlayRef> LayerBaseClient::Surface::createOverlay( + uint32_t w, uint32_t h, int32_t format, int32_t orientation) +{ + return NULL; +}; + +// --------------------------------------------------------------------------- + +}; // namespace android |