RenderProxy.cpp revision 19b6bcfd83eb7fb92ebd06d2fec89e308311f1d0 
1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "RenderProxy"
18
19#include "RenderProxy.h"
20
21#include "CanvasContext.h"
22#include "RenderTask.h"
23#include "RenderThread.h"
24
25#include "../DeferredLayerUpdater.h"
26#include "../DisplayList.h"
27#include "../LayerRenderer.h"
28#include "../Rect.h"
29
30namespace android {
31namespace uirenderer {
32namespace renderthread {
33
34#define ARGS(method) method ## Args
35
36#define CREATE_BRIDGE0(name) CREATE_BRIDGE(name,,,,,,,,)
37#define CREATE_BRIDGE1(name, a1) CREATE_BRIDGE(name, a1,,,,,,,)
38#define CREATE_BRIDGE2(name, a1, a2) CREATE_BRIDGE(name, a1,a2,,,,,,)
39#define CREATE_BRIDGE3(name, a1, a2, a3) CREATE_BRIDGE(name, a1,a2,a3,,,,,)
40#define CREATE_BRIDGE4(name, a1, a2, a3, a4) CREATE_BRIDGE(name, a1,a2,a3,a4,,,,)
41#define CREATE_BRIDGE(name, a1, a2, a3, a4, a5, a6, a7, a8) \
42    typedef struct { \
43        a1; a2; a3; a4; a5; a6; a7; a8; \
44    } ARGS(name); \
45    static void* Bridge_ ## name(ARGS(name)* args)
46
47#define SETUP_TASK(method) \
48    LOG_ALWAYS_FATAL_IF( METHOD_INVOKE_PAYLOAD_SIZE < sizeof(ARGS(method)), \
49        "METHOD_INVOKE_PAYLOAD_SIZE %d is smaller than sizeof(" #method "Args) %d", \
50                METHOD_INVOKE_PAYLOAD_SIZE, sizeof(ARGS(method))); \
51    MethodInvokeRenderTask* task = createTask((RunnableMethod) Bridge_ ## method); \
52    ARGS(method) *args = (ARGS(method) *) task->payload()
53
54CREATE_BRIDGE1(createContext, bool translucent) {
55    return new CanvasContext(args->translucent);
56}
57
58RenderProxy::RenderProxy(bool translucent)
59        : mRenderThread(RenderThread::getInstance())
60        , mContext(0) {
61    SETUP_TASK(createContext);
62    args->translucent = translucent;
63    mContext = (CanvasContext*) postAndWait(task);
64}
65
66RenderProxy::~RenderProxy() {
67    destroyContext();
68}
69
70CREATE_BRIDGE1(destroyContext, CanvasContext* context) {
71    delete args->context;
72    return NULL;
73}
74
75void RenderProxy::destroyContext() {
76    if (mContext) {
77        SETUP_TASK(destroyContext);
78        args->context = mContext;
79        mContext = 0;
80        post(task);
81    }
82}
83
84CREATE_BRIDGE2(initialize, CanvasContext* context, EGLNativeWindowType window) {
85    return (void*) args->context->initialize(args->window);
86}
87
88bool RenderProxy::initialize(EGLNativeWindowType window) {
89    SETUP_TASK(initialize);
90    args->context = mContext;
91    args->window = window;
92    return (bool) postAndWait(task);
93}
94
95CREATE_BRIDGE2(updateSurface, CanvasContext* context, EGLNativeWindowType window) {
96    args->context->updateSurface(args->window);
97    return NULL;
98}
99
100void RenderProxy::updateSurface(EGLNativeWindowType window) {
101    SETUP_TASK(updateSurface);
102    args->context = mContext;
103    args->window = window;
104    post(task);
105}
106
107CREATE_BRIDGE3(setup, CanvasContext* context, int width, int height) {
108    args->context->setup(args->width, args->height);
109    return NULL;
110}
111
112void RenderProxy::setup(int width, int height) {
113    SETUP_TASK(setup);
114    args->context = mContext;
115    args->width = width;
116    args->height = height;
117    post(task);
118}
119
120CREATE_BRIDGE4(drawDisplayList, CanvasContext* context, DisplayList* displayList,
121        Rect dirty, const Vector<DeferredLayerUpdater*>* layerUpdates) {
122    Rect* dirty = &args->dirty;
123    if (dirty->bottom == -1 && dirty->left == -1 &&
124            dirty->top == -1 && dirty->right == -1) {
125        dirty = 0;
126    }
127    args->context->processLayerUpdates(args->layerUpdates);
128    args->context->drawDisplayList(args->displayList, dirty);
129    return NULL;
130}
131
132void RenderProxy::drawDisplayList(DisplayList* displayList,
133        int dirtyLeft, int dirtyTop, int dirtyRight, int dirtyBottom) {
134    SETUP_TASK(drawDisplayList);
135    args->context = mContext;
136    args->displayList = displayList;
137    args->dirty.set(dirtyLeft, dirtyTop, dirtyRight, dirtyBottom);
138    args->layerUpdates = &mLayers;
139    // TODO: Switch to post() once some form of thread safety strategy is in place
140    postAndWait(task);
141}
142
143CREATE_BRIDGE1(destroyCanvas, CanvasContext* context) {
144    args->context->destroyCanvas();
145    return NULL;
146}
147
148void RenderProxy::destroyCanvas() {
149    SETUP_TASK(destroyCanvas);
150    args->context = mContext;
151    post(task);
152}
153
154CREATE_BRIDGE2(attachFunctor, CanvasContext* context, Functor* functor) {
155    args->context->attachFunctor(args->functor);
156    return NULL;
157}
158
159void RenderProxy::attachFunctor(Functor* functor) {
160    SETUP_TASK(attachFunctor);
161    args->context = mContext;
162    args->functor = functor;
163    post(task);
164}
165
166CREATE_BRIDGE2(detachFunctor, CanvasContext* context, Functor* functor) {
167    args->context->detachFunctor(args->functor);
168    return NULL;
169}
170
171void RenderProxy::detachFunctor(Functor* functor) {
172    SETUP_TASK(detachFunctor);
173    args->context = mContext;
174    args->functor = functor;
175    post(task);
176}
177
178CREATE_BRIDGE2(runWithGlContext, CanvasContext* context, RenderTask* task) {
179    args->context->runWithGlContext(args->task);
180    return NULL;
181}
182
183void RenderProxy::runWithGlContext(RenderTask* gltask) {
184    SETUP_TASK(runWithGlContext);
185    args->context = mContext;
186    args->task = gltask;
187    postAndWait(task);
188}
189
190CREATE_BRIDGE2(createDisplayListLayer, int width, int height) {
191    Layer* layer = LayerRenderer::createRenderLayer(args->width, args->height);
192    if (!layer) return 0;
193
194    OpenGLRenderer* renderer = new LayerRenderer(layer);
195    renderer->initProperties();
196    return new DeferredLayerUpdater(layer, renderer);
197}
198
199DeferredLayerUpdater* RenderProxy::createDisplayListLayer(int width, int height) {
200    SETUP_TASK(createDisplayListLayer);
201    args->width = width;
202    args->height = height;
203    void* retval = postAndWait(task);
204    DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(retval);
205    mLayers.push(layer);
206    return layer;
207}
208
209CREATE_BRIDGE0(createTextureLayer) {
210    Layer* layer = LayerRenderer::createTextureLayer();
211    if (!layer) return 0;
212    return new DeferredLayerUpdater(layer);
213}
214
215DeferredLayerUpdater* RenderProxy::createTextureLayer() {
216    SETUP_TASK(createTextureLayer);
217    void* retval = postAndWait(task);
218    DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(retval);
219    mLayers.push(layer);
220    return layer;
221}
222
223CREATE_BRIDGE1(destroyLayer, Layer* layer) {
224    LayerRenderer::destroyLayer(args->layer);
225    return NULL;
226}
227
228CREATE_BRIDGE3(copyLayerInto, CanvasContext* context, DeferredLayerUpdater* layer,
229        SkBitmap* bitmap) {
230    bool success = args->context->copyLayerInto(args->layer, args->bitmap);
231    return (void*) success;
232}
233
234bool RenderProxy::copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap) {
235    SETUP_TASK(copyLayerInto);
236    args->context = mContext;
237    args->layer = layer;
238    args->bitmap = bitmap;
239    return (bool) postAndWait(task);
240}
241
242void RenderProxy::destroyLayer(DeferredLayerUpdater* layer) {
243    for (size_t i = 0; i < mLayers.size(); i++) {
244        if (mLayers[i] == layer) {
245            mLayers.removeAt(i);
246            break;
247        }
248    }
249    SETUP_TASK(destroyLayer);
250    args->layer = layer->detachBackingLayer();
251    post(task);
252}
253
254MethodInvokeRenderTask* RenderProxy::createTask(RunnableMethod method) {
255    // TODO: Consider having a small pool of these to avoid alloc churn
256    return new MethodInvokeRenderTask(method);
257}
258
259void RenderProxy::post(RenderTask* task) {
260    mRenderThread.queue(task);
261}
262
263void* RenderProxy::postAndWait(MethodInvokeRenderTask* task) {
264    void* retval;
265    task->setReturnPtr(&retval);
266    SignalingRenderTask syncTask(task, &mSyncMutex, &mSyncCondition);
267    AutoMutex _lock(mSyncMutex);
268    mRenderThread.queue(&syncTask);
269    mSyncCondition.wait(mSyncMutex);
270    return retval;
271}
272
273} /* namespace renderthread */
274} /* namespace uirenderer */
275} /* namespace android */
276