system/OpenglSystemCommon/HostConnection.h

   1 /*
   2 * Copyright (C) 2011 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 #ifndef __COMMON_HOST_CONNECTION_H
  17 #define __COMMON_HOST_CONNECTION_H
  18
  19 #include "IOStream.h"
  20 #include "renderControl_enc.h"
  21 #include "ChecksumCalculator.h"
  22
  23 #include <string>
  24
  25 class GLEncoder;
  26 class gl_client_context_t;
  27 class GL2Encoder;
  28 class gl2_client_context_t;
  29
  30 class HostConnection
  31 {
  32 public:
  33     static HostConnection *get();
  34     ~HostConnection();
  35
  36     GLEncoder *glEncoder();
  37     GL2Encoder *gl2Encoder();
  38     renderControl_encoder_context_t *rcEncoder();
  39     ChecksumCalculator *checksumHelper() { return &m_checksumHelper; }
  40
  41     void flush() {
  42         if (m_stream) {
  43             m_stream->flush();
  44         }
  45     }
  46
  47 private:
  48     HostConnection();
  49     static gl_client_context_t  *s_getGLContext();
  50     static gl2_client_context_t *s_getGL2Context();
  51
  52     std::string queryGLExtensions(renderControl_encoder_context_t *rcEnc);
  53     // setProtocol initilizes GL communication protocol for checksums
  54     // should be called when m_rcEnc is created
  55     void setChecksumHelper(renderControl_encoder_context_t *rcEnc);
  56
  57 private:
  58     IOStream *m_stream;
  59     GLEncoder   *m_glEnc;
  60     GL2Encoder  *m_gl2Enc;
  61     renderControl_encoder_context_t *m_rcEnc;
  62     ChecksumCalculator m_checksumHelper;
  63 };
  64
  65 #endif