--- /dev/null
+/*
+* Copyright (C) 2011 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+#include "HostConnection.h"
+#include "TcpStream.h"
+#include "QemuPipeStream.h"
+#include "ThreadInfo.h"
+#include <cutils/log.h>
+#include "GLEncoder.h"
+#include "GL2Encoder.h"
+#include <memory>
+
+#define STREAM_BUFFER_SIZE 4*1024*1024
+#define STREAM_PORT_NUM 22468
+
+/* Set to 1 to use a QEMU pipe, or 0 for a TCP connection */
+#define USE_QEMU_PIPE 1
+
+HostConnection::HostConnection() :
+ m_stream(NULL),
+ m_glEnc(NULL),
+ m_gl2Enc(NULL),
+ m_rcEnc(NULL),
+ m_checksumHelper()
+{
+}
+
+HostConnection::~HostConnection()
+{
+ delete m_stream;
+ delete m_glEnc;
+ delete m_gl2Enc;
+ delete m_rcEnc;
+}
+
+HostConnection *HostConnection::get()
+{
+ /* TODO: Make this configurable with a system property */
+ const int useQemuPipe = USE_QEMU_PIPE;
+
+ // Get thread info
+ EGLThreadInfo *tinfo = getEGLThreadInfo();
+ if (!tinfo) {
+ return NULL;
+ }
+
+ if (tinfo->hostConn == NULL) {
+ HostConnection *con = new HostConnection();
+ if (NULL == con) {
+ return NULL;
+ }
+
+ if (useQemuPipe) {
+ QemuPipeStream *stream = new QemuPipeStream(STREAM_BUFFER_SIZE);
+ if (!stream) {
+ ALOGE("Failed to create QemuPipeStream for host connection!!!\n");
+ delete con;
+ return NULL;
+ }
+ if (stream->connect() < 0) {
+ ALOGE("Failed to connect to host (QemuPipeStream)!!!\n");
+ delete stream;
+ delete con;
+ return NULL;
+ }
+ con->m_stream = stream;
+ }
+ else /* !useQemuPipe */
+ {
+ TcpStream *stream = new TcpStream(STREAM_BUFFER_SIZE);
+ if (!stream) {
+ ALOGE("Failed to create TcpStream for host connection!!!\n");
+ delete con;
+ return NULL;
+ }
+
+ if (stream->connect("10.0.2.2", STREAM_PORT_NUM) < 0) {
+ ALOGE("Failed to connect to host (TcpStream)!!!\n");
+ delete stream;
+ delete con;
+ return NULL;
+ }
+ con->m_stream = stream;
+ }
+
+ // send zero 'clientFlags' to the host.
+ unsigned int *pClientFlags =
+ (unsigned int *)con->m_stream->allocBuffer(sizeof(unsigned int));
+ *pClientFlags = 0;
+ con->m_stream->commitBuffer(sizeof(unsigned int));
+
+ ALOGD("HostConnection::get() New Host Connection established %p, tid %d\n", con, gettid());
+ tinfo->hostConn = con;
+ }
+
+ return tinfo->hostConn;
+}
+
+GLEncoder *HostConnection::glEncoder()
+{
+ if (!m_glEnc) {
+ m_glEnc = new GLEncoder(m_stream, checksumHelper());
+ DBG("HostConnection::glEncoder new encoder %p, tid %d", m_glEnc, gettid());
+ m_glEnc->setContextAccessor(s_getGLContext);
+ }
+ return m_glEnc;
+}
+
+GL2Encoder *HostConnection::gl2Encoder()
+{
+ if (!m_gl2Enc) {
+ m_gl2Enc = new GL2Encoder(m_stream, checksumHelper());
+ DBG("HostConnection::gl2Encoder new encoder %p, tid %d", m_gl2Enc, gettid());
+ m_gl2Enc->setContextAccessor(s_getGL2Context);
+ }
+ return m_gl2Enc;
+}
+
+renderControl_encoder_context_t *HostConnection::rcEncoder()
+{
+ if (!m_rcEnc) {
+ m_rcEnc = new renderControl_encoder_context_t(m_stream, checksumHelper());
+ // TODO: disable checksum as a workaround in a glTexSubImage2D problem
+ // Uncomment the following line when the root cause is solved
+ //setChecksumHelper(m_rcEnc);
+ }
+ return m_rcEnc;
+}
+
+gl_client_context_t *HostConnection::s_getGLContext()
+{
+ EGLThreadInfo *ti = getEGLThreadInfo();
+ if (ti->hostConn) {
+ return ti->hostConn->m_glEnc;
+ }
+ return NULL;
+}
+
+gl2_client_context_t *HostConnection::s_getGL2Context()
+{
+ EGLThreadInfo *ti = getEGLThreadInfo();
+ if (ti->hostConn) {
+ return ti->hostConn->m_gl2Enc;
+ }
+ return NULL;
+}
+
+void HostConnection::setChecksumHelper(renderControl_encoder_context_t *rcEnc) {
+ std::unique_ptr<char[]> glExtensions;
+ int extensionSize = rcEnc->rcGetGLString(rcEnc, GL_EXTENSIONS, NULL, 0);
+ if (extensionSize < 0) {
+ glExtensions = std::unique_ptr<char[]>(new char[-extensionSize]);
+ extensionSize = rcEnc->rcGetGLString(rcEnc, GL_EXTENSIONS, glExtensions.get(), -extensionSize);
+ if (extensionSize <= 0) {
+ glExtensions.reset();
+ }
+ }
+ // check the host supported version
+ uint32_t checksumVersion = 0;
+ const char* checksumPrefix = ChecksumCalculator::getMaxVersionStrPrefix();
+ const char* glProtocolStr = glExtensions.get() ?
+ strstr(glExtensions.get(), checksumPrefix) : NULL;
+ if (glProtocolStr) {
+ uint32_t maxVersion = ChecksumCalculator::getMaxVersion();
+ sscanf(glProtocolStr+strlen(checksumPrefix), "%d", &checksumVersion);
+ if (maxVersion < checksumVersion) {
+ checksumVersion = maxVersion;
+ }
+ // The ordering of the following two commands matters!
+ // Must tell the host first before setting it in the guest
+ rcEnc->rcSelectChecksumCalculator(rcEnc, checksumVersion, 0);
+ m_checksumHelper.setVersion(checksumVersion);
+ }
+}
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