2 * Copyright (C) 2011 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
16 #ifndef __COMMON_HOST_CONNECTION_H
17 #define __COMMON_HOST_CONNECTION_H
20 #include "renderControl_enc.h"
21 #include "ChecksumCalculator.h"
26 struct gl_client_context_t;
28 struct gl2_client_context_t;
30 // SyncImpl determines the presence of host/guest OpenGL fence sync
31 // capabilities. It corresponds exactly to EGL_ANDROID_native_fence_sync
32 // capability, but for the emulator, we need to make sure that
33 // OpenGL pipe protocols match, so we use a special extension name
35 // SYNC_IMPL_NONE means that the native fence sync capability is
36 // not present, and we will end up using the equivalent of glFinish
37 // in order to preserve buffer swapping order.
38 // SYNC_IMPL_NATIVE_SYNC means that we do have native fence sync
39 // capability, and we will use a fence fd to synchronize buffer swaps.
42 SYNC_IMPL_NATIVE_SYNC = 1
45 // If this GL extension string shows up, we use
46 // SYNC_IMPL_NATIVE_SYNC, otherwise we use SYNC_IMPL_NONE.
47 // This string is always updated to require the _latest_
48 // version of Android emulator native sync in this system image;
49 // otherwise, we do not use the feature.
50 static const char kRCNativeSync[] = "ANDROID_EMU_native_sync_v2";
52 // ExtendedRCEncoderContext is an extended version of renderControl_encoder_context_t
53 // that will be used to track SyncImpl.
54 class ExtendedRCEncoderContext : public renderControl_encoder_context_t {
56 ExtendedRCEncoderContext(IOStream *stream, ChecksumCalculator *checksumCalculator)
57 : renderControl_encoder_context_t(stream, checksumCalculator) { }
58 void setSyncImpl(SyncImpl syncImpl) { m_syncImpl = syncImpl; }
59 bool hasNativeSync() const { return m_syncImpl == SYNC_IMPL_NATIVE_SYNC; }
67 static HostConnection *get();
71 GLEncoder *glEncoder();
72 GL2Encoder *gl2Encoder();
73 ExtendedRCEncoderContext *rcEncoder();
74 ChecksumCalculator *checksumHelper() { return &m_checksumHelper; }
82 void setGrallocOnly(bool gralloc_only) {
83 m_grallocOnly = gralloc_only;
86 bool isGrallocOnly() const { return m_grallocOnly; }
90 static gl_client_context_t *s_getGLContext();
91 static gl2_client_context_t *s_getGL2Context();
93 std::string queryGLExtensions(ExtendedRCEncoderContext *rcEnc);
94 // setProtocol initilizes GL communication protocol for checksums
95 // should be called when m_rcEnc is created
96 void setChecksumHelper(ExtendedRCEncoderContext *rcEnc);
97 void queryAndSetSyncImpl(ExtendedRCEncoderContext *rcEnc);
102 GL2Encoder *m_gl2Enc;
103 ExtendedRCEncoderContext *m_rcEnc;
104 ChecksumCalculator m_checksumHelper;
105 std::string m_glExtensions;