01b766839e
The WindowManager side of Surface.java holds a SurfaceControl, while the client-side holds a Surface. When the client is in the system process, Surface.java holds both (which is a problem we'll try to fix later).
710 lines
22 KiB
C++
710 lines
22 KiB
C++
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "Surface"
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#include <stdint.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <utils/Errors.h>
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#include <utils/threads.h>
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#include <utils/IPCThreadState.h>
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#include <utils/IMemory.h>
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#include <utils/Log.h>
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#include <ui/DisplayInfo.h>
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#include <ui/BufferMapper.h>
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#include <ui/EGLNativeWindowSurface.h>
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#include <ui/ISurface.h>
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#include <ui/Surface.h>
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#include <ui/SurfaceComposerClient.h>
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#include <ui/Rect.h>
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#include <EGL/android_natives.h>
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#include <private/ui/SharedState.h>
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#include <private/ui/LayerState.h>
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#include <pixelflinger/pixelflinger.h>
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namespace android {
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// ============================================================================
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// SurfaceBuffer
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// ============================================================================
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template<class SurfaceBuffer> Mutex Singleton<SurfaceBuffer>::sLock;
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template<> SurfaceBuffer* Singleton<SurfaceBuffer>::sInstance(0);
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SurfaceBuffer::SurfaceBuffer()
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: BASE(), handle(0), mOwner(false)
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{
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width =
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height =
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stride =
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format =
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usage = 0;
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android_native_buffer_t::getHandle = getHandle;
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}
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SurfaceBuffer::SurfaceBuffer(const Parcel& data)
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: BASE(), handle(0), mOwner(true)
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{
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// we own the handle in this case
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width = data.readInt32();
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height = data.readInt32();
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stride = data.readInt32();
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format = data.readInt32();
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usage = data.readInt32();
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handle = data.readNativeHandle();
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android_native_buffer_t::getHandle = getHandle;
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}
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SurfaceBuffer::~SurfaceBuffer()
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{
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if (handle && mOwner) {
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native_handle_close(handle);
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native_handle_delete(const_cast<native_handle*>(handle));
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}
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}
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int SurfaceBuffer::getHandle(android_native_buffer_t const * base,
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buffer_handle_t* handle)
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{
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*handle = getSelf(base)->handle;
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return 0;
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}
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status_t SurfaceBuffer::writeToParcel(Parcel* reply,
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android_native_buffer_t const* buffer)
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{
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buffer_handle_t handle;
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status_t err = buffer->getHandle(buffer, &handle);
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if (err < 0) {
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return err;
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}
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reply->writeInt32(buffer->width);
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reply->writeInt32(buffer->height);
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reply->writeInt32(buffer->stride);
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reply->writeInt32(buffer->format);
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reply->writeInt32(buffer->usage);
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reply->writeNativeHandle(handle);
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return NO_ERROR;
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}
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// ----------------------------------------------------------------------
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static void copyBlt(const android_native_buffer_t* dst,
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const android_native_buffer_t* src, const Region& reg)
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{
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Region::iterator iterator(reg);
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if (iterator) {
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// NOTE: dst and src must be the same format
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Rect r;
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const size_t bpp = bytesPerPixel(src->format);
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const size_t dbpr = dst->stride * bpp;
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const size_t sbpr = src->stride * bpp;
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while (iterator.iterate(&r)) {
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ssize_t h = r.bottom - r.top;
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if (h) {
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size_t size = (r.right - r.left) * bpp;
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uint8_t* s = (GGLubyte*)src->bits +
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(r.left + src->stride * r.top) * bpp;
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uint8_t* d = (GGLubyte*)dst->bits +
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(r.left + dst->stride * r.top) * bpp;
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if (dbpr==sbpr && size==sbpr) {
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size *= h;
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h = 1;
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}
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do {
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memcpy(d, s, size);
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d += dbpr;
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s += sbpr;
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} while (--h > 0);
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}
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}
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}
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}
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// ============================================================================
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// SurfaceControl
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// ============================================================================
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SurfaceControl::SurfaceControl(
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const sp<SurfaceComposerClient>& client,
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const sp<ISurface>& surface,
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const ISurfaceFlingerClient::surface_data_t& data,
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uint32_t w, uint32_t h, PixelFormat format, uint32_t flags,
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bool owner)
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: mClient(client), mSurface(surface),
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mToken(data.token), mIdentity(data.identity),
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mFormat(format), mFlags(flags), mOwner(owner)
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{
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}
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SurfaceControl::~SurfaceControl()
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{
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destroy();
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}
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void SurfaceControl::destroy()
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{
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// Destroy the surface in SurfaceFlinger if we were the owner
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// (in any case, a client won't be able to, because it won't have the
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// right permission).
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if (mOwner && mToken>=0 && mClient!=0) {
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mClient->destroySurface(mToken);
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}
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// clear all references and trigger an IPC now, to make sure things
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// happen without delay, since these resources are quite heavy.
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mClient.clear();
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mSurface.clear();
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IPCThreadState::self()->flushCommands();
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}
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void SurfaceControl::clear()
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{
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// here, the window manager tells us explicitly that we should destroy
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// the surface's resource. Soon after this call, it will also release
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// its last reference (which will call the dtor); however, it is possible
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// that a client living in the same process still holds references which
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// would delay the call to the dtor -- that is why we need this explicit
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// "clear()" call.
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destroy();
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}
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bool SurfaceControl::isSameSurface(
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const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs)
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{
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if (lhs == 0 || rhs == 0)
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return false;
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return lhs->mSurface->asBinder() == rhs->mSurface->asBinder();
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}
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status_t SurfaceControl::setLayer(int32_t layer) {
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const sp<SurfaceComposerClient>& client(mClient);
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if (client == 0) return NO_INIT;
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status_t err = validate(client->mControl);
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if (err < 0) return err;
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return client->setLayer(mToken, layer);
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}
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status_t SurfaceControl::setPosition(int32_t x, int32_t y) {
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const sp<SurfaceComposerClient>& client(mClient);
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if (client == 0) return NO_INIT;
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status_t err = validate(client->mControl);
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if (err < 0) return err;
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return client->setPosition(mToken, x, y);
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}
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status_t SurfaceControl::setSize(uint32_t w, uint32_t h) {
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const sp<SurfaceComposerClient>& client(mClient);
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if (client == 0) return NO_INIT;
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status_t err = validate(client->mControl);
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if (err < 0) return err;
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return client->setSize(mToken, w, h);
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}
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status_t SurfaceControl::hide() {
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const sp<SurfaceComposerClient>& client(mClient);
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if (client == 0) return NO_INIT;
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status_t err = validate(client->mControl);
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if (err < 0) return err;
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return client->hide(mToken);
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}
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status_t SurfaceControl::show(int32_t layer) {
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const sp<SurfaceComposerClient>& client(mClient);
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if (client == 0) return NO_INIT;
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status_t err = validate(client->mControl);
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if (err < 0) return err;
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return client->show(mToken, layer);
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}
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status_t SurfaceControl::freeze() {
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const sp<SurfaceComposerClient>& client(mClient);
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if (client == 0) return NO_INIT;
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status_t err = validate(client->mControl);
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if (err < 0) return err;
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return client->freeze(mToken);
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}
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status_t SurfaceControl::unfreeze() {
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const sp<SurfaceComposerClient>& client(mClient);
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if (client == 0) return NO_INIT;
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status_t err = validate(client->mControl);
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if (err < 0) return err;
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return client->unfreeze(mToken);
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}
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status_t SurfaceControl::setFlags(uint32_t flags, uint32_t mask) {
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const sp<SurfaceComposerClient>& client(mClient);
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if (client == 0) return NO_INIT;
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status_t err = validate(client->mControl);
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if (err < 0) return err;
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return client->setFlags(mToken, flags, mask);
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}
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status_t SurfaceControl::setTransparentRegionHint(const Region& transparent) {
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const sp<SurfaceComposerClient>& client(mClient);
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if (client == 0) return NO_INIT;
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status_t err = validate(client->mControl);
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if (err < 0) return err;
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return client->setTransparentRegionHint(mToken, transparent);
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}
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status_t SurfaceControl::setAlpha(float alpha) {
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const sp<SurfaceComposerClient>& client(mClient);
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if (client == 0) return NO_INIT;
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status_t err = validate(client->mControl);
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if (err < 0) return err;
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return client->setAlpha(mToken, alpha);
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}
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status_t SurfaceControl::setMatrix(float dsdx, float dtdx, float dsdy, float dtdy) {
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const sp<SurfaceComposerClient>& client(mClient);
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if (client == 0) return NO_INIT;
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status_t err = validate(client->mControl);
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if (err < 0) return err;
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return client->setMatrix(mToken, dsdx, dtdx, dsdy, dtdy);
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}
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status_t SurfaceControl::setFreezeTint(uint32_t tint) {
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const sp<SurfaceComposerClient>& client(mClient);
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if (client == 0) return NO_INIT;
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status_t err = validate(client->mControl);
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if (err < 0) return err;
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return client->setFreezeTint(mToken, tint);
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}
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status_t SurfaceControl::validate(per_client_cblk_t const* cblk) const
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{
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if (mToken<0 || mClient==0) {
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LOGE("invalid token (%d, identity=%u) or client (%p)",
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mToken, mIdentity, mClient.get());
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return NO_INIT;
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}
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if (cblk == 0) {
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LOGE("cblk is null (surface id=%d, identity=%u)", mToken, mIdentity);
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return NO_INIT;
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}
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status_t err = cblk->validate(mToken);
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if (err != NO_ERROR) {
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LOGE("surface (id=%d, identity=%u) is invalid, err=%d (%s)",
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mToken, mIdentity, err, strerror(-err));
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return err;
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}
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if (mIdentity != uint32_t(cblk->layers[mToken].identity)) {
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LOGE("using an invalid surface id=%d, identity=%u should be %d",
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mToken, mIdentity, cblk->layers[mToken].identity);
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return NO_INIT;
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}
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return NO_ERROR;
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}
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status_t SurfaceControl::writeSurfaceToParcel(
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const sp<SurfaceControl>& control, Parcel* parcel)
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{
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uint32_t flags = 0;
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uint32_t format = 0;
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SurfaceID token = -1;
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uint32_t identity = 0;
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sp<SurfaceComposerClient> client;
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sp<ISurface> sur;
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if (SurfaceControl::isValid(control)) {
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token = control->mToken;
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identity = control->mIdentity;
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client = control->mClient;
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sur = control->mSurface;
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format = control->mFormat;
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flags = control->mFlags;
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}
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parcel->writeStrongBinder(client!=0 ? client->connection() : NULL);
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parcel->writeStrongBinder(sur!=0 ? sur->asBinder() : NULL);
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parcel->writeInt32(token);
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parcel->writeInt32(identity);
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parcel->writeInt32(format);
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parcel->writeInt32(flags);
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return NO_ERROR;
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}
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sp<Surface> SurfaceControl::getSurface() const
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{
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Mutex::Autolock _l(mLock);
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if (mSurfaceData == 0) {
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mSurfaceData = new Surface(const_cast<SurfaceControl*>(this));
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}
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return mSurfaceData;
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}
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// ============================================================================
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// Surface
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// ============================================================================
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Surface::Surface(const sp<SurfaceControl>& surface)
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: mClient(surface->mClient), mSurface(surface->mSurface),
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mToken(surface->mToken), mIdentity(surface->mIdentity),
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mFormat(surface->mFormat), mFlags(surface->mFlags),
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mOwner(surface->mOwner)
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{
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init();
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}
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Surface::Surface(const Parcel& parcel)
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: mOwner(false)
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{
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sp<IBinder> clientBinder = parcel.readStrongBinder();
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mSurface = interface_cast<ISurface>(parcel.readStrongBinder());
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mToken = parcel.readInt32();
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mIdentity = parcel.readInt32();
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mFormat = parcel.readInt32();
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mFlags = parcel.readInt32();
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if (clientBinder != NULL)
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mClient = SurfaceComposerClient::clientForConnection(clientBinder);
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init();
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}
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void Surface::init()
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{
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android_native_window_t::connect = connect;
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android_native_window_t::disconnect = disconnect;
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android_native_window_t::setSwapInterval = setSwapInterval;
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android_native_window_t::setSwapRectangle = setSwapRectangle;
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android_native_window_t::dequeueBuffer = dequeueBuffer;
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android_native_window_t::lockBuffer = lockBuffer;
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android_native_window_t::queueBuffer = queueBuffer;
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mSwapRectangle.makeInvalid();
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DisplayInfo dinfo;
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SurfaceComposerClient::getDisplayInfo(0, &dinfo);
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const_cast<float&>(android_native_window_t::xdpi) = dinfo.xdpi;
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const_cast<float&>(android_native_window_t::ydpi) = dinfo.ydpi;
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// FIXME: set real values here
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const_cast<int&>(android_native_window_t::minSwapInterval) = 1;
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const_cast<int&>(android_native_window_t::maxSwapInterval) = 1;
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const_cast<uint32_t&>(android_native_window_t::flags) = 0;
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}
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Surface::~Surface()
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{
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// this is a client-side operation, the surface is destroyed, unmap
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// its buffers in this process.
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for (int i=0 ; i<2 ; i++) {
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if (mBuffers[i] != 0) {
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BufferMapper::get().unmap(mBuffers[i]->getHandle(), this);
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}
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}
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// clear all references and trigger an IPC now, to make sure things
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// happen without delay, since these resources are quite heavy.
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mClient.clear();
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mSurface.clear();
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IPCThreadState::self()->flushCommands();
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}
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status_t Surface::validate(per_client_cblk_t const* cblk) const
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{
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if (mToken<0 || mClient==0) {
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LOGE("invalid token (%d, identity=%u) or client (%p)",
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mToken, mIdentity, mClient.get());
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return NO_INIT;
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}
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if (cblk == 0) {
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LOGE("cblk is null (surface id=%d, identity=%u)", mToken, mIdentity);
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return NO_INIT;
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}
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status_t err = cblk->validate(mToken);
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if (err != NO_ERROR) {
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LOGE("surface (id=%d, identity=%u) is invalid, err=%d (%s)",
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mToken, mIdentity, err, strerror(-err));
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return err;
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}
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if (mIdentity != uint32_t(cblk->layers[mToken].identity)) {
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LOGE("using an invalid surface id=%d, identity=%u should be %d",
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mToken, mIdentity, cblk->layers[mToken].identity);
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return NO_INIT;
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}
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return NO_ERROR;
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}
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bool Surface::isSameSurface(
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const sp<Surface>& lhs, const sp<Surface>& rhs)
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{
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if (lhs == 0 || rhs == 0)
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return false;
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return lhs->mSurface->asBinder() == rhs->mSurface->asBinder();
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}
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// ----------------------------------------------------------------------------
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int Surface::setSwapRectangle(android_native_window_t* window,
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int l, int t, int w, int h)
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{
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Surface* self = getSelf(window);
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self->setSwapRectangle(Rect(l, t, l+w, t+h));
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return 0;
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}
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void Surface::connect(android_native_window_t* window)
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{
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}
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void Surface::disconnect(android_native_window_t* window)
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{
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}
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int Surface::setSwapInterval(android_native_window_t* window, int interval)
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{
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return 0;
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}
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int Surface::dequeueBuffer(android_native_window_t* window,
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android_native_buffer_t** buffer)
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{
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Surface* self = getSelf(window);
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return self->dequeueBuffer(buffer);
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}
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int Surface::lockBuffer(android_native_window_t* window,
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android_native_buffer_t* buffer)
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{
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Surface* self = getSelf(window);
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return self->lockBuffer(buffer);
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}
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int Surface::queueBuffer(android_native_window_t* window,
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android_native_buffer_t* buffer)
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{
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Surface* self = getSelf(window);
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return self->queueBuffer(buffer);
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}
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// ----------------------------------------------------------------------------
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int Surface::dequeueBuffer(android_native_buffer_t** buffer)
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{
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// FIXME: dequeueBuffer() needs proper implementation
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Mutex::Autolock _l(mSurfaceLock);
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per_client_cblk_t* const cblk = mClient->mControl;
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status_t err = validate(cblk);
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if (err != NO_ERROR)
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return err;
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SurfaceID index(mToken);
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int32_t backIdx = cblk->lock_layer(size_t(index),
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per_client_cblk_t::BLOCKING);
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if (backIdx < 0)
|
|
return status_t(backIdx);
|
|
|
|
mBackbufferIndex = backIdx;
|
|
layer_cblk_t* const lcblk = &(cblk->layers[index]);
|
|
|
|
volatile const surface_info_t* const back = lcblk->surface + backIdx;
|
|
if (back->flags & surface_info_t::eNeedNewBuffer) {
|
|
getBufferLocked(backIdx);
|
|
}
|
|
|
|
const sp<SurfaceBuffer>& backBuffer(mBuffers[backIdx]);
|
|
*buffer = backBuffer.get();
|
|
|
|
return NO_ERROR;
|
|
}
|
|
|
|
int Surface::lockBuffer(android_native_buffer_t* buffer)
|
|
{
|
|
Mutex::Autolock _l(mSurfaceLock);
|
|
|
|
per_client_cblk_t* const cblk = mClient->mControl;
|
|
status_t err = validate(cblk);
|
|
if (err != NO_ERROR)
|
|
return err;
|
|
|
|
// FIXME: lockBuffer() needs proper implementation
|
|
return 0;
|
|
}
|
|
|
|
int Surface::queueBuffer(android_native_buffer_t* buffer)
|
|
{
|
|
Mutex::Autolock _l(mSurfaceLock);
|
|
|
|
per_client_cblk_t* const cblk = mClient->mControl;
|
|
status_t err = validate(cblk);
|
|
if (err != NO_ERROR)
|
|
return err;
|
|
|
|
// transmit the dirty region
|
|
const Region dirty(swapRectangle());
|
|
SurfaceID index(mToken);
|
|
layer_cblk_t* const lcblk = &(cblk->layers[index]);
|
|
_send_dirty_region(lcblk, dirty);
|
|
|
|
uint32_t newstate = cblk->unlock_layer_and_post(size_t(index));
|
|
if (!(newstate & eNextFlipPending))
|
|
mClient->signalServer();
|
|
|
|
return NO_ERROR;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
status_t Surface::lock(SurfaceInfo* info, bool blocking) {
|
|
return Surface::lock(info, NULL, blocking);
|
|
}
|
|
|
|
status_t Surface::lock(SurfaceInfo* other, Region* dirty, bool blocking)
|
|
{
|
|
// FIXME: needs some locking here
|
|
android_native_buffer_t* backBuffer;
|
|
status_t err = dequeueBuffer(&backBuffer);
|
|
if (err == NO_ERROR) {
|
|
err = lockBuffer(backBuffer);
|
|
if (err == NO_ERROR) {
|
|
backBuffer->common.incRef(&backBuffer->common);
|
|
mLockedBuffer = backBuffer;
|
|
other->w = backBuffer->width;
|
|
other->h = backBuffer->height;
|
|
other->s = backBuffer->stride;
|
|
other->usage = backBuffer->usage;
|
|
other->format = backBuffer->format;
|
|
other->bits = backBuffer->bits;
|
|
|
|
// we handle copy-back here...
|
|
|
|
const Rect bounds(backBuffer->width, backBuffer->height);
|
|
Region newDirtyRegion;
|
|
|
|
per_client_cblk_t* const cblk = mClient->mControl;
|
|
layer_cblk_t* const lcblk = &(cblk->layers[SurfaceID(mToken)]);
|
|
volatile const surface_info_t* const back = lcblk->surface + mBackbufferIndex;
|
|
if (back->flags & surface_info_t::eBufferDirty) {
|
|
// content is meaningless in this case and the whole surface
|
|
// needs to be redrawn.
|
|
newDirtyRegion.set(bounds);
|
|
if (dirty) {
|
|
*dirty = newDirtyRegion;
|
|
}
|
|
} else
|
|
{
|
|
if (dirty) {
|
|
dirty->andSelf(Region(bounds));
|
|
newDirtyRegion = *dirty;
|
|
} else {
|
|
newDirtyRegion.set(bounds);
|
|
}
|
|
Region copyback;
|
|
if (!(lcblk->flags & eNoCopyBack)) {
|
|
const Region previousDirtyRegion(dirtyRegion());
|
|
copyback = previousDirtyRegion.subtract(newDirtyRegion);
|
|
}
|
|
const sp<SurfaceBuffer>& frontBuffer(mBuffers[1-mBackbufferIndex]);
|
|
if (!copyback.isEmpty() && frontBuffer!=0) {
|
|
// copy front to back
|
|
copyBlt(backBuffer, frontBuffer.get(), copyback);
|
|
}
|
|
}
|
|
setDirtyRegion(newDirtyRegion);
|
|
|
|
|
|
Rect lockBounds(backBuffer->width, backBuffer->height);
|
|
if (dirty) {
|
|
lockBounds = dirty->bounds();
|
|
}
|
|
buffer_handle_t handle;
|
|
backBuffer->getHandle(backBuffer, &handle);
|
|
status_t res = BufferMapper::get().lock(handle,
|
|
GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
|
|
lockBounds);
|
|
LOGW_IF(res, "failed locking buffer %d (%p)",
|
|
mBackbufferIndex, handle);
|
|
setSwapRectangle(lockBounds);
|
|
}
|
|
}
|
|
return err;
|
|
}
|
|
|
|
status_t Surface::unlockAndPost()
|
|
{
|
|
// FIXME: needs some locking here
|
|
|
|
if (mLockedBuffer == 0)
|
|
return BAD_VALUE;
|
|
|
|
buffer_handle_t handle;
|
|
mLockedBuffer->getHandle(mLockedBuffer, &handle);
|
|
status_t res = BufferMapper::get().unlock(handle);
|
|
LOGW_IF(res, "failed unlocking buffer %d (%p)",
|
|
mBackbufferIndex, handle);
|
|
|
|
const Rect dirty(dirtyRegion().bounds());
|
|
setSwapRectangle(dirty);
|
|
status_t err = queueBuffer(mLockedBuffer);
|
|
mLockedBuffer->common.decRef(&mLockedBuffer->common);
|
|
mLockedBuffer = 0;
|
|
return err;
|
|
}
|
|
|
|
void Surface::_send_dirty_region(
|
|
layer_cblk_t* lcblk, const Region& dirty)
|
|
{
|
|
const int32_t index = (lcblk->flags & eBufferIndex) >> eBufferIndexShift;
|
|
flat_region_t* flat_region = lcblk->region + index;
|
|
status_t err = dirty.write(flat_region, sizeof(flat_region_t));
|
|
if (err < NO_ERROR) {
|
|
// region doesn't fit, use the bounds
|
|
const Region reg(dirty.bounds());
|
|
reg.write(flat_region, sizeof(flat_region_t));
|
|
}
|
|
}
|
|
|
|
Region Surface::dirtyRegion() const {
|
|
return mDirtyRegion;
|
|
}
|
|
void Surface::setDirtyRegion(const Region& region) const {
|
|
mDirtyRegion = region;
|
|
}
|
|
const Rect& Surface::swapRectangle() const {
|
|
return mSwapRectangle;
|
|
}
|
|
void Surface::setSwapRectangle(const Rect& r) {
|
|
mSwapRectangle = r;
|
|
}
|
|
|
|
status_t Surface::getBufferLocked(int index)
|
|
{
|
|
status_t err = NO_MEMORY;
|
|
sp<SurfaceBuffer> buffer = mSurface->getBuffer();
|
|
LOGE_IF(buffer==0, "ISurface::getBuffer() returned NULL");
|
|
if (buffer != 0) {
|
|
sp<SurfaceBuffer>& currentBuffer(mBuffers[index]);
|
|
if (currentBuffer != 0) {
|
|
BufferMapper::get().unmap(currentBuffer->getHandle(), this);
|
|
currentBuffer.clear();
|
|
}
|
|
err = BufferMapper::get().map(buffer->getHandle(), &buffer->bits, this);
|
|
LOGW_IF(err, "map(...) failed %d (%s)", err, strerror(-err));
|
|
if (err == NO_ERROR) {
|
|
currentBuffer = buffer;
|
|
}
|
|
}
|
|
return err;
|
|
}
|
|
|
|
}; // namespace android
|
|
|