RenderProxy.cpp revision 8de65a8e05285df52a1e6f0c1d5616dd233298a7 
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 = new MethodInvokeRenderTask((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    mDrawFrameTask.setContext(mContext);
65}
66
67RenderProxy::~RenderProxy() {
68    destroyContext();
69}
70
71CREATE_BRIDGE1(destroyContext, CanvasContext* context) {
72    delete args->context;
73    return NULL;
74}
75
76void RenderProxy::destroyContext() {
77    if (mContext) {
78        // Flush any pending changes to ensure all garbage is destroyed
79        mDrawFrameTask.flushStateChanges(&mRenderThread);
80
81        SETUP_TASK(destroyContext);
82        args->context = mContext;
83        mContext = 0;
84        mDrawFrameTask.setContext(0);
85        // This is also a fence as we need to be certain that there are no
86        // outstanding mDrawFrame tasks posted before it is destroyed
87        postAndWait(task);
88    }
89}
90
91CREATE_BRIDGE2(initialize, CanvasContext* context, EGLNativeWindowType window) {
92    return (void*) args->context->initialize(args->window);
93}
94
95bool RenderProxy::initialize(EGLNativeWindowType window) {
96    SETUP_TASK(initialize);
97    args->context = mContext;
98    args->window = window;
99    return (bool) postAndWait(task);
100}
101
102CREATE_BRIDGE2(updateSurface, CanvasContext* context, EGLNativeWindowType window) {
103    args->context->updateSurface(args->window);
104    return NULL;
105}
106
107void RenderProxy::updateSurface(EGLNativeWindowType window) {
108    SETUP_TASK(updateSurface);
109    args->context = mContext;
110    args->window = window;
111    post(task);
112}
113
114CREATE_BRIDGE3(setup, CanvasContext* context, int width, int height) {
115    args->context->setup(args->width, args->height);
116    return NULL;
117}
118
119void RenderProxy::setup(int width, int height) {
120    SETUP_TASK(setup);
121    args->context = mContext;
122    args->width = width;
123    args->height = height;
124    post(task);
125}
126
127void RenderProxy::drawDisplayList(RenderNode* displayList,
128        int dirtyLeft, int dirtyTop, int dirtyRight, int dirtyBottom) {
129    mDrawFrameTask.setRenderNode(displayList);
130    mDrawFrameTask.setDirty(dirtyLeft, dirtyTop, dirtyRight, dirtyBottom);
131    mDrawFrameTask.drawFrame(&mRenderThread);
132}
133
134CREATE_BRIDGE1(destroyCanvas, CanvasContext* context) {
135    args->context->destroyCanvas();
136    return NULL;
137}
138
139void RenderProxy::destroyCanvas() {
140    // If the canvas is being destroyed we won't be drawing again anytime soon
141    // So flush any pending state changes to allow for resource cleanup.
142    mDrawFrameTask.flushStateChanges(&mRenderThread);
143
144    SETUP_TASK(destroyCanvas);
145    args->context = mContext;
146    post(task);
147}
148
149CREATE_BRIDGE2(attachFunctor, CanvasContext* context, Functor* functor) {
150    args->context->attachFunctor(args->functor);
151    return NULL;
152}
153
154void RenderProxy::attachFunctor(Functor* functor) {
155    SETUP_TASK(attachFunctor);
156    args->context = mContext;
157    args->functor = functor;
158    post(task);
159}
160
161CREATE_BRIDGE2(detachFunctor, CanvasContext* context, Functor* functor) {
162    args->context->detachFunctor(args->functor);
163    return NULL;
164}
165
166void RenderProxy::detachFunctor(Functor* functor) {
167    SETUP_TASK(detachFunctor);
168    args->context = mContext;
169    args->functor = functor;
170    post(task);
171}
172
173CREATE_BRIDGE2(invokeFunctor, CanvasContext* context, Functor* functor) {
174    args->context->invokeFunctor(args->functor);
175    return NULL;
176}
177
178void RenderProxy::invokeFunctor(Functor* functor, bool waitForCompletion) {
179    SETUP_TASK(invokeFunctor);
180    args->context = mContext;
181    args->functor = functor;
182    if (waitForCompletion) {
183        postAndWait(task);
184    } else {
185        post(task);
186    }
187}
188
189CREATE_BRIDGE2(runWithGlContext, CanvasContext* context, RenderTask* task) {
190    args->context->runWithGlContext(args->task);
191    return NULL;
192}
193
194void RenderProxy::runWithGlContext(RenderTask* gltask) {
195    SETUP_TASK(runWithGlContext);
196    args->context = mContext;
197    args->task = gltask;
198    postAndWait(task);
199}
200
201CREATE_BRIDGE3(createDisplayListLayer, CanvasContext* context, int width, int height) {
202    Layer* layer = args->context->createRenderLayer(args->width, args->height);
203    if (!layer) return 0;
204    return new DeferredLayerUpdater(layer);
205}
206
207DeferredLayerUpdater* RenderProxy::createDisplayListLayer(int width, int height) {
208    SETUP_TASK(createDisplayListLayer);
209    args->width = width;
210    args->height = height;
211    args->context = mContext;
212    void* retval = postAndWait(task);
213    DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(retval);
214    mDrawFrameTask.addLayer(layer);
215    return layer;
216}
217
218CREATE_BRIDGE1(createTextureLayer, CanvasContext* context) {
219    Layer* layer = args->context->createTextureLayer();
220    if (!layer) return 0;
221    return new DeferredLayerUpdater(layer);
222}
223
224DeferredLayerUpdater* RenderProxy::createTextureLayer() {
225    SETUP_TASK(createTextureLayer);
226    args->context = mContext;
227    void* retval = postAndWait(task);
228    DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(retval);
229    mDrawFrameTask.addLayer(layer);
230    return layer;
231}
232
233CREATE_BRIDGE1(destroyLayer, Layer* layer) {
234    LayerRenderer::destroyLayer(args->layer);
235    return NULL;
236}
237
238CREATE_BRIDGE3(copyLayerInto, CanvasContext* context, DeferredLayerUpdater* layer,
239        SkBitmap* bitmap) {
240    bool success = args->context->copyLayerInto(args->layer, args->bitmap);
241    return (void*) success;
242}
243
244bool RenderProxy::copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap) {
245    SETUP_TASK(copyLayerInto);
246    args->context = mContext;
247    args->layer = layer;
248    args->bitmap = bitmap;
249    return (bool) postAndWait(task);
250}
251
252void RenderProxy::destroyLayer(DeferredLayerUpdater* layer) {
253    mDrawFrameTask.removeLayer(layer);
254    SETUP_TASK(destroyLayer);
255    args->layer = layer->detachBackingLayer();
256    post(task);
257}
258
259CREATE_BRIDGE0(fence) {
260    // Intentionally empty
261    return NULL;
262}
263
264void RenderProxy::fence() {
265    SETUP_TASK(fence);
266    postAndWait(task);
267}
268
269void RenderProxy::post(RenderTask* task) {
270    mRenderThread.queue(task);
271}
272
273void* RenderProxy::postAndWait(MethodInvokeRenderTask* task) {
274    void* retval;
275    task->setReturnPtr(&retval);
276    SignalingRenderTask syncTask(task, &mSyncMutex, &mSyncCondition);
277    AutoMutex _lock(mSyncMutex);
278    mRenderThread.queue(&syncTask);
279    mSyncCondition.wait(mSyncMutex);
280    return retval;
281}
282
283} /* namespace renderthread */
284} /* namespace uirenderer */
285} /* namespace android */
286