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comparison: widget/gonk/nativewindow/GonkNativeWindowClientJB.h

widget/gonk/nativewindow/GonkNativeWindowClientJB.h

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1 /*
2 * Copyright (C) 2010 The Android Open Source Project
3 * Copyright (C) 2013 Mozilla Foundation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 #ifndef NATIVEWINDOW_GONKNATIVEWINDOWCLIENT_JB_H
19 #define NATIVEWINDOW_GONKNATIVEWINDOWCLIENT_JB_H
20
21 #if ANDROID_VERSION == 17
22 #include <gui/ISurfaceTexture.h>
23 #else
24 #include <gui/IGraphicBufferProducer.h>
25 #endif
26
27 #include <ui/ANativeObjectBase.h>
28 #include <ui/Region.h>
29
30 #include <utils/RefBase.h>
31 #include <utils/threads.h>
32 #include <utils/KeyedVector.h>
33
34 #include "GonkBufferQueue.h"
35
36 struct ANativeWindow_Buffer;
37
38 namespace android {
39
40 /*
41 * An implementation of ANativeWindow that feeds graphics buffers into a
42 * BufferQueue.
43 *
44 * This is typically used by programs that want to render frames through
45 * some means (maybe OpenGL, a software renderer, or a hardware decoder)
46 * and have the frames they create forwarded to SurfaceFlinger for
47 * compositing. For example, a video decoder could render a frame and call
48 * eglSwapBuffers(), which invokes ANativeWindow callbacks defined by
49 * GonkNativeWindowClient. GonkNativeWindowClient then forwards the buffers through Binder IPC
50 * to the BufferQueue's producer interface, providing the new frame to a
51 * consumer such as GLConsumer.
52 */
53 class GonkNativeWindowClient
54 : public ANativeObjectBase<ANativeWindow, GonkNativeWindowClient, RefBase>
55 {
56 public:
57
58 /*
59 * creates a GonkNativeWindowClient from the given IGraphicBufferProducer (which concrete
60 * implementation is a BufferQueue).
61 *
62 * GonkNativeWindowClient is mainly state-less while it's disconnected, it can be
63 * viewed as a glorified IGraphicBufferProducer holder. It's therefore
64 * safe to create other GonkNativeWindowClients from the same IGraphicBufferProducer.
65 *
66 * However, once a GonkNativeWindowClient is connected, it'll prevent other GonkNativeWindowClients
67 * referring to the same IGraphicBufferProducer to become connected and
68 * therefore prevent them to be used as actual producers of buffers.
69 */
70 GonkNativeWindowClient(const sp<IGraphicBufferProducer>& bufferProducer);
71
72 /* getIGraphicBufferProducer() returns the IGraphicBufferProducer this
73 * GonkNativeWindowClient was created with. Usually it's an error to use the
74 * IGraphicBufferProducer while the GonkNativeWindowClient is connected.
75 */
76 #if ANDROID_VERSION == 17
77 sp<IGraphicBufferProducer> getISurfaceTexture() const;
78 #else
79 sp<IGraphicBufferProducer> getIGraphicBufferProducer() const;
80 #endif
81
82 /* convenience function to check that the given surface is non NULL as
83 * well as its IGraphicBufferProducer */
84 #if ANDROID_VERSION >= 18
85 static bool isValid(const sp<GonkNativeWindowClient>& surface) {
86 return surface != NULL && surface->getIGraphicBufferProducer() != NULL;
87 }
88 #endif
89
90 protected:
91 virtual ~GonkNativeWindowClient();
92
93 private:
94 // can't be copied
95 GonkNativeWindowClient& operator = (const GonkNativeWindowClient& rhs);
96 GonkNativeWindowClient(const GonkNativeWindowClient& rhs);
97
98 // ANativeWindow hooks
99 static int hook_cancelBuffer(ANativeWindow* window,
100 ANativeWindowBuffer* buffer, int fenceFd);
101 static int hook_dequeueBuffer(ANativeWindow* window,
102 ANativeWindowBuffer** buffer, int* fenceFd);
103 static int hook_perform(ANativeWindow* window, int operation, ...);
104 static int hook_query(const ANativeWindow* window, int what, int* value);
105 static int hook_queueBuffer(ANativeWindow* window,
106 ANativeWindowBuffer* buffer, int fenceFd);
107 static int hook_setSwapInterval(ANativeWindow* window, int interval);
108
109 static int hook_cancelBuffer_DEPRECATED(ANativeWindow* window,
110 ANativeWindowBuffer* buffer);
111 static int hook_dequeueBuffer_DEPRECATED(ANativeWindow* window,
112 ANativeWindowBuffer** buffer);
113 static int hook_lockBuffer_DEPRECATED(ANativeWindow* window,
114 ANativeWindowBuffer* buffer);
115 static int hook_queueBuffer_DEPRECATED(ANativeWindow* window,
116 ANativeWindowBuffer* buffer);
117
118 int dispatchConnect(va_list args);
119 int dispatchDisconnect(va_list args);
120 int dispatchSetBufferCount(va_list args);
121 int dispatchSetBuffersGeometry(va_list args);
122 int dispatchSetBuffersDimensions(va_list args);
123 int dispatchSetBuffersUserDimensions(va_list args);
124 int dispatchSetBuffersFormat(va_list args);
125 int dispatchSetScalingMode(va_list args);
126 int dispatchSetBuffersTransform(va_list args);
127 int dispatchSetBuffersTimestamp(va_list args);
128 int dispatchSetCrop(va_list args);
129 int dispatchSetPostTransformCrop(va_list args);
130 int dispatchSetUsage(va_list args);
131 int dispatchLock(va_list args);
132 int dispatchUnlockAndPost(va_list args);
133
134 protected:
135 virtual int dequeueBuffer(ANativeWindowBuffer** buffer, int* fenceFd);
136 virtual int cancelBuffer(ANativeWindowBuffer* buffer, int fenceFd);
137 virtual int queueBuffer(ANativeWindowBuffer* buffer, int fenceFd);
138 virtual int perform(int operation, va_list args);
139 virtual int query(int what, int* value) const;
140 virtual int setSwapInterval(int interval);
141
142 virtual int lockBuffer_DEPRECATED(ANativeWindowBuffer* buffer);
143
144 virtual int connect(int api);
145 virtual int disconnect(int api);
146 virtual int setBufferCount(int bufferCount);
147 virtual int setBuffersDimensions(int w, int h);
148 virtual int setBuffersUserDimensions(int w, int h);
149 virtual int setBuffersFormat(int format);
150 virtual int setScalingMode(int mode);
151 virtual int setBuffersTransform(int transform);
152 virtual int setBuffersTimestamp(int64_t timestamp);
153 virtual int setCrop(Rect const* rect);
154 virtual int setUsage(uint32_t reqUsage);
155
156 public:
157 virtual int lock(ANativeWindow_Buffer* outBuffer, ARect* inOutDirtyBounds);
158 virtual int unlockAndPost();
159
160 protected:
161 enum { NUM_BUFFER_SLOTS = GonkBufferQueue::NUM_BUFFER_SLOTS };
162 enum { DEFAULT_FORMAT = PIXEL_FORMAT_RGBA_8888 };
163
164 private:
165 void freeAllBuffers();
166 int getSlotFromBufferLocked(android_native_buffer_t* buffer) const;
167
168 struct BufferSlot {
169 sp<GraphicBuffer> buffer;
170 Region dirtyRegion;
171 };
172
173 // mSurfaceTexture is the interface to the surface texture server. All
174 // operations on the surface texture client ultimately translate into
175 // interactions with the server using this interface.
176 sp<IGraphicBufferProducer> mBufferProducer;
177
178 // mSlots stores the buffers that have been allocated for each buffer slot.
179 // It is initialized to null pointers, and gets filled in with the result of
180 // IGraphicBufferProducer::requestBuffer when the client dequeues a buffer from a
181 // slot that has not yet been used. The buffer allocated to a slot will also
182 // be replaced if the requested buffer usage or geometry differs from that
183 // of the buffer allocated to a slot.
184 BufferSlot mSlots[NUM_BUFFER_SLOTS];
185
186 // mReqWidth is the buffer width that will be requested at the next dequeue
187 // operation. It is initialized to 1.
188 uint32_t mReqWidth;
189
190 // mReqHeight is the buffer height that will be requested at the next
191 // dequeue operation. It is initialized to 1.
192 uint32_t mReqHeight;
193
194 // mReqFormat is the buffer pixel format that will be requested at the next
195 // deuque operation. It is initialized to PIXEL_FORMAT_RGBA_8888.
196 uint32_t mReqFormat;
197
198 // mReqUsage is the set of buffer usage flags that will be requested
199 // at the next deuque operation. It is initialized to 0.
200 uint32_t mReqUsage;
201
202 // mTimestamp is the timestamp that will be used for the next buffer queue
203 // operation. It defaults to NATIVE_WINDOW_TIMESTAMP_AUTO, which means that
204 // a timestamp is auto-generated when queueBuffer is called.
205 int64_t mTimestamp;
206
207 // mCrop is the crop rectangle that will be used for the next buffer
208 // that gets queued. It is set by calling setCrop.
209 Rect mCrop;
210
211 // mScalingMode is the scaling mode that will be used for the next
212 // buffers that get queued. It is set by calling setScalingMode.
213 int mScalingMode;
214
215 // mTransform is the transform identifier that will be used for the next
216 // buffer that gets queued. It is set by calling setTransform.
217 uint32_t mTransform;
218
219 // mDefaultWidth is default width of the buffers, regardless of the
220 // native_window_set_buffers_dimensions call.
221 uint32_t mDefaultWidth;
222
223 // mDefaultHeight is default height of the buffers, regardless of the
224 // native_window_set_buffers_dimensions call.
225 uint32_t mDefaultHeight;
226
227 // mUserWidth, if non-zero, is an application-specified override
228 // of mDefaultWidth. This is lower priority than the width set by
229 // native_window_set_buffers_dimensions.
230 uint32_t mUserWidth;
231
232 // mUserHeight, if non-zero, is an application-specified override
233 // of mDefaultHeight. This is lower priority than the height set
234 // by native_window_set_buffers_dimensions.
235 uint32_t mUserHeight;
236
237 // mTransformHint is the transform probably applied to buffers of this
238 // window. this is only a hint, actual transform may differ.
239 uint32_t mTransformHint;
240
241 // mConsumerRunningBehind whether the consumer is running more than
242 // one buffer behind the producer.
243 mutable bool mConsumerRunningBehind;
244
245 // mMutex is the mutex used to prevent concurrent access to the member
246 // variables of GonkNativeWindowClient objects. It must be locked whenever the
247 // member variables are accessed.
248 mutable Mutex mMutex;
249
250 // must be used from the lock/unlock thread
251 sp<GraphicBuffer> mLockedBuffer;
252 sp<GraphicBuffer> mPostedBuffer;
253 bool mConnectedToCpu;
254
255 // must be accessed from lock/unlock thread only
256 Region mDirtyRegion;
257 };
258
259 }; // namespace android
260
261 #endif // NATIVEWINDOW_GONKNATIVEWINDOWCLIENT_JB_H

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