1 /*
2 * Copyright (C) 2007 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 "ISurface"
18
19 #include <stdio.h>
20 #include <stdint.h>
21 #include <sys/types.h>
22
23 #include <binder/Parcel.h>
24 #include <binder/IMemory.h>
25
26 #include <ui/Overlay.h>
27 #include <ui/GraphicBuffer.h>
28
29 #include <surfaceflinger/Surface.h>
30 #include <surfaceflinger/ISurface.h>
31
32 namespace android {
33
34 // ----------------------------------------------------------------------
35
BufferHeap()36 ISurface::BufferHeap::BufferHeap()
37 : w(0), h(0), hor_stride(0), ver_stride(0), format(0),
38 transform(0), flags(0)
39 {
40 }
41
BufferHeap(uint32_t w,uint32_t h,int32_t hor_stride,int32_t ver_stride,PixelFormat format,const sp<IMemoryHeap> & heap)42 ISurface::BufferHeap::BufferHeap(uint32_t w, uint32_t h,
43 int32_t hor_stride, int32_t ver_stride,
44 PixelFormat format, const sp<IMemoryHeap>& heap)
45 : w(w), h(h), hor_stride(hor_stride), ver_stride(ver_stride),
46 format(format), transform(0), flags(0), heap(heap)
47 {
48 }
49
BufferHeap(uint32_t w,uint32_t h,int32_t hor_stride,int32_t ver_stride,PixelFormat format,uint32_t transform,uint32_t flags,const sp<IMemoryHeap> & heap)50 ISurface::BufferHeap::BufferHeap(uint32_t w, uint32_t h,
51 int32_t hor_stride, int32_t ver_stride,
52 PixelFormat format, uint32_t transform, uint32_t flags,
53 const sp<IMemoryHeap>& heap)
54 : w(w), h(h), hor_stride(hor_stride), ver_stride(ver_stride),
55 format(format), transform(transform), flags(flags), heap(heap)
56 {
57 }
58
59
~BufferHeap()60 ISurface::BufferHeap::~BufferHeap()
61 {
62 }
63
64 // ----------------------------------------------------------------------
65
66 class BpSurface : public BpInterface<ISurface>
67 {
68 public:
BpSurface(const sp<IBinder> & impl)69 BpSurface(const sp<IBinder>& impl)
70 : BpInterface<ISurface>(impl)
71 {
72 }
73
requestBuffer(int bufferIdx,uint32_t w,uint32_t h,uint32_t format,uint32_t usage)74 virtual sp<GraphicBuffer> requestBuffer(int bufferIdx,
75 uint32_t w, uint32_t h, uint32_t format, uint32_t usage)
76 {
77 Parcel data, reply;
78 data.writeInterfaceToken(ISurface::getInterfaceDescriptor());
79 data.writeInt32(bufferIdx);
80 data.writeInt32(w);
81 data.writeInt32(h);
82 data.writeInt32(format);
83 data.writeInt32(usage);
84 remote()->transact(REQUEST_BUFFER, data, &reply);
85 sp<GraphicBuffer> buffer = new GraphicBuffer();
86 reply.read(*buffer);
87 return buffer;
88 }
89
setBufferCount(int bufferCount)90 virtual status_t setBufferCount(int bufferCount)
91 {
92 Parcel data, reply;
93 data.writeInterfaceToken(ISurface::getInterfaceDescriptor());
94 data.writeInt32(bufferCount);
95 remote()->transact(SET_BUFFER_COUNT, data, &reply);
96 status_t err = reply.readInt32();
97 return err;
98 }
99
registerBuffers(const BufferHeap & buffers)100 virtual status_t registerBuffers(const BufferHeap& buffers)
101 {
102 Parcel data, reply;
103 data.writeInterfaceToken(ISurface::getInterfaceDescriptor());
104 data.writeInt32(buffers.w);
105 data.writeInt32(buffers.h);
106 data.writeInt32(buffers.hor_stride);
107 data.writeInt32(buffers.ver_stride);
108 data.writeInt32(buffers.format);
109 data.writeInt32(buffers.transform);
110 data.writeInt32(buffers.flags);
111 data.writeStrongBinder(buffers.heap->asBinder());
112 remote()->transact(REGISTER_BUFFERS, data, &reply);
113 status_t result = reply.readInt32();
114 return result;
115 }
116
postBuffer(ssize_t offset)117 virtual void postBuffer(ssize_t offset)
118 {
119 Parcel data, reply;
120 data.writeInterfaceToken(ISurface::getInterfaceDescriptor());
121 data.writeInt32(offset);
122 remote()->transact(POST_BUFFER, data, &reply, IBinder::FLAG_ONEWAY);
123 }
124
unregisterBuffers()125 virtual void unregisterBuffers()
126 {
127 Parcel data, reply;
128 data.writeInterfaceToken(ISurface::getInterfaceDescriptor());
129 remote()->transact(UNREGISTER_BUFFERS, data, &reply);
130 }
131
createOverlay(uint32_t w,uint32_t h,int32_t format,int32_t orientation)132 virtual sp<OverlayRef> createOverlay(
133 uint32_t w, uint32_t h, int32_t format, int32_t orientation)
134 {
135 Parcel data, reply;
136 data.writeInterfaceToken(ISurface::getInterfaceDescriptor());
137 data.writeInt32(w);
138 data.writeInt32(h);
139 data.writeInt32(format);
140 data.writeInt32(orientation);
141 remote()->transact(CREATE_OVERLAY, data, &reply);
142 return OverlayRef::readFromParcel(reply);
143 }
144 };
145
146 IMPLEMENT_META_INTERFACE(Surface, "android.ui.ISurface");
147
148 // ----------------------------------------------------------------------
149
onTransact(uint32_t code,const Parcel & data,Parcel * reply,uint32_t flags)150 status_t BnSurface::onTransact(
151 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
152 {
153 switch(code) {
154 case REQUEST_BUFFER: {
155 CHECK_INTERFACE(ISurface, data, reply);
156 int bufferIdx = data.readInt32();
157 uint32_t w = data.readInt32();
158 uint32_t h = data.readInt32();
159 uint32_t format = data.readInt32();
160 uint32_t usage = data.readInt32();
161 sp<GraphicBuffer> buffer(requestBuffer(bufferIdx, w, h, format, usage));
162 if (buffer == NULL)
163 return BAD_VALUE;
164 return reply->write(*buffer);
165 }
166 case SET_BUFFER_COUNT: {
167 CHECK_INTERFACE(ISurface, data, reply);
168 int bufferCount = data.readInt32();
169 status_t err = setBufferCount(bufferCount);
170 reply->writeInt32(err);
171 return NO_ERROR;
172 }
173 case REGISTER_BUFFERS: {
174 CHECK_INTERFACE(ISurface, data, reply);
175 BufferHeap buffer;
176 buffer.w = data.readInt32();
177 buffer.h = data.readInt32();
178 buffer.hor_stride = data.readInt32();
179 buffer.ver_stride= data.readInt32();
180 buffer.format = data.readInt32();
181 buffer.transform = data.readInt32();
182 buffer.flags = data.readInt32();
183 buffer.heap = interface_cast<IMemoryHeap>(data.readStrongBinder());
184 status_t err = registerBuffers(buffer);
185 reply->writeInt32(err);
186 return NO_ERROR;
187 } break;
188 case UNREGISTER_BUFFERS: {
189 CHECK_INTERFACE(ISurface, data, reply);
190 unregisterBuffers();
191 return NO_ERROR;
192 } break;
193 case POST_BUFFER: {
194 CHECK_INTERFACE(ISurface, data, reply);
195 ssize_t offset = data.readInt32();
196 postBuffer(offset);
197 return NO_ERROR;
198 } break;
199 case CREATE_OVERLAY: {
200 CHECK_INTERFACE(ISurface, data, reply);
201 int w = data.readInt32();
202 int h = data.readInt32();
203 int f = data.readInt32();
204 int orientation = data.readInt32();
205 sp<OverlayRef> o = createOverlay(w, h, f, orientation);
206 return OverlayRef::writeToParcel(reply, o);
207 } break;
208 default:
209 return BBinder::onTransact(code, data, reply, flags);
210 }
211 }
212
213 }; // namespace android
214