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/*
* Copyright (C) 2008-2012 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 <utils/Log.h>
#include <malloc.h>
#include <string.h>
#include "RenderScript.h"
bool RenderScript::gInitialized = false;
pthread_mutex_t RenderScript::gInitMutex = PTHREAD_MUTEX_INITIALIZER;
RenderScript::RenderScript() {
mDev = NULL;
mContext = NULL;
mErrorFunc = NULL;
mMessageFunc = NULL;
mMessageRun = false;
memset(&mElements, 0, sizeof(mElements));
}
RenderScript::~RenderScript() {
mMessageRun = false;
rsContextDeinitToClient(mContext);
void *res = NULL;
int status = pthread_join(mMessageThreadId, &res);
rsContextDestroy(mContext);
mContext = NULL;
rsDeviceDestroy(mDev);
mDev = NULL;
}
bool RenderScript::init(int targetApi) {
mDev = rsDeviceCreate();
if (mDev == 0) {
ALOGE("Device creation failed");
return false;
}
mContext = rsContextCreate(mDev, 0, targetApi);
if (mContext == 0) {
ALOGE("Context creation failed");
return false;
}
pid_t mNativeMessageThreadId;
int status = pthread_create(&mMessageThreadId, NULL, threadProc, this);
if (status) {
ALOGE("Failed to start RenderScript message thread.");
return false;
}
// Wait for the message thread to be active.
while (!mMessageRun) {
usleep(1000);
}
return true;
}
void * RenderScript::threadProc(void *vrsc) {
RenderScript *rs = static_cast<RenderScript *>(vrsc);
size_t rbuf_size = 256;
void * rbuf = malloc(rbuf_size);
rsContextInitToClient(rs->mContext);
rs->mMessageRun = true;
while (rs->mMessageRun) {
size_t receiveLen = 0;
uint32_t usrID = 0;
uint32_t subID = 0;
RsMessageToClientType r = rsContextPeekMessage(rs->mContext,
&receiveLen, sizeof(receiveLen),
&usrID, sizeof(usrID));
if (receiveLen >= rbuf_size) {
rbuf_size = receiveLen + 32;
rbuf = realloc(rbuf, rbuf_size);
}
if (!rbuf) {
ALOGE("RenderScript::message handler realloc error %zu", rbuf_size);
// No clean way to recover now?
}
rsContextGetMessage(rs->mContext, rbuf, rbuf_size, &receiveLen, sizeof(receiveLen),
&subID, sizeof(subID));
switch(r) {
case RS_MESSAGE_TO_CLIENT_ERROR:
ALOGE("RS Error %s", (const char *)rbuf);
if(rs->mMessageFunc != NULL) {
rs->mErrorFunc(usrID, (const char *)rbuf);
}
break;
case RS_MESSAGE_TO_CLIENT_EXCEPTION:
// teardown. But we want to avoid starving other threads during
// teardown by yielding until the next line in the destructor can
// execute to set mRun = false
usleep(1000);
break;
case RS_MESSAGE_TO_CLIENT_USER:
if(rs->mMessageFunc != NULL) {
rs->mMessageFunc(usrID, rbuf, receiveLen);
} else {
ALOGE("Received a message from the script with no message handler installed.");
}
break;
default:
ALOGE("RenderScript unknown message type %i", r);
}
}
if (rbuf) {
free(rbuf);
}
ALOGE("RenderScript Message thread exiting.");
return NULL;
}
void RenderScript::setErrorHandler(ErrorHandlerFunc_t func) {
mErrorFunc = func;
}
void RenderScript::setMessageHandler(MessageHandlerFunc_t func) {
mMessageFunc = func;
}
void RenderScript::contextDump() {
}
void RenderScript::finish() {
}
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